./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-ext-properties/test-0217_1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/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_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext-properties/test-0217_1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e4aac8fd1b71e0bd84f9ab8e5c238dc6bf3a295fcb9cebe504ba6d0c9a6a7b7a --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 05:12:53,672 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 05:12:53,760 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-28 05:12:53,765 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 05:12:53,765 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 05:12:53,789 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 05:12:53,790 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 05:12:53,790 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 05:12:53,791 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 05:12:53,791 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 05:12:53,791 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 05:12:53,791 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 05:12:53,792 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 05:12:53,792 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 05:12:53,792 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 05:12:53,792 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 05:12:53,792 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 05:12:53,792 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 05:12:53,793 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 05:12:53,793 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 05:12:53,793 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-28 05:12:53,793 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-28 05:12:53,793 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-28 05:12:53,793 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 05:12:53,793 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-28 05:12:53,793 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 05:12:53,794 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 05:12:53,794 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 05:12:53,794 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 05:12:53,794 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 05:12:53,794 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 05:12:53,794 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 05:12:53,795 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 05:12:53,795 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:12:53,795 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 05:12:53,795 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 05:12:53,795 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 05:12:53,795 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 05:12:53,795 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:12:53,796 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 05:12:53,796 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 05:12:53,796 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 05:12:53,796 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 05:12:53,796 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 05:12:53,796 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 05:12:53,796 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 05:12:53,797 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 05:12:53,797 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_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e4aac8fd1b71e0bd84f9ab8e5c238dc6bf3a295fcb9cebe504ba6d0c9a6a7b7a [2024-11-28 05:12:54,076 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 05:12:54,084 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 05:12:54,086 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 05:12:54,088 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 05:12:54,088 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 05:12:54,089 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/list-ext-properties/test-0217_1.i [2024-11-28 05:12:57,006 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/data/00e855fc8/66e85f5f490b476ca8545f29d1c7113a/FLAG44709a057 [2024-11-28 05:12:57,361 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 05:12:57,362 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/sv-benchmarks/c/list-ext-properties/test-0217_1.i [2024-11-28 05:12:57,375 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/data/00e855fc8/66e85f5f490b476ca8545f29d1c7113a/FLAG44709a057 [2024-11-28 05:12:57,389 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/data/00e855fc8/66e85f5f490b476ca8545f29d1c7113a [2024-11-28 05:12:57,392 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 05:12:57,393 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 05:12:57,394 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 05:12:57,394 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 05:12:57,399 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 05:12:57,400 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:12:57" (1/1) ... [2024-11-28 05:12:57,401 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@426baa63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:12:57, skipping insertion in model container [2024-11-28 05:12:57,401 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:12:57" (1/1) ... [2024-11-28 05:12:57,437 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 05:12:57,913 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 05:12:57,926 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 05:12:58,033 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 05:12:58,088 INFO L204 MainTranslator]: Completed translation [2024-11-28 05:12:58,089 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:12:58 WrapperNode [2024-11-28 05:12:58,090 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 05:12:58,091 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 05:12:58,092 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 05:12:58,092 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 05:12:58,104 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:12:58" (1/1) ... [2024-11-28 05:12:58,127 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:12:58" (1/1) ... [2024-11-28 05:12:58,170 INFO L138 Inliner]: procedures = 181, calls = 47, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 249 [2024-11-28 05:12:58,174 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 05:12:58,175 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 05:12:58,175 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 05:12:58,175 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 05:12:58,187 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:12:58" (1/1) ... [2024-11-28 05:12:58,188 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:12:58" (1/1) ... [2024-11-28 05:12:58,192 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:12:58" (1/1) ... [2024-11-28 05:12:58,233 INFO L175 MemorySlicer]: Split 32 memory accesses to 2 slices as follows [2, 30]. 94 percent of accesses are in the largest equivalence class. The 4 initializations are split as follows [2, 2]. The 11 writes are split as follows [0, 11]. [2024-11-28 05:12:58,234 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:12:58" (1/1) ... [2024-11-28 05:12:58,234 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:12:58" (1/1) ... [2024-11-28 05:12:58,256 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:12:58" (1/1) ... [2024-11-28 05:12:58,257 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:12:58" (1/1) ... [2024-11-28 05:12:58,267 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:12:58" (1/1) ... [2024-11-28 05:12:58,270 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:12:58" (1/1) ... [2024-11-28 05:12:58,271 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:12:58" (1/1) ... [2024-11-28 05:12:58,279 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 05:12:58,280 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 05:12:58,280 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 05:12:58,280 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 05:12:58,281 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:12:58" (1/1) ... [2024-11-28 05:12:58,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:12:58,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:12:58,336 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 05:12:58,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 05:12:58,375 INFO L130 BoogieDeclarations]: Found specification of procedure rand_end_point [2024-11-28 05:12:58,375 INFO L138 BoogieDeclarations]: Found implementation of procedure rand_end_point [2024-11-28 05:12:58,375 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 05:12:58,375 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 05:12:58,375 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-28 05:12:58,375 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 05:12:58,375 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-28 05:12:58,375 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-28 05:12:58,375 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-28 05:12:58,375 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-28 05:12:58,375 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 05:12:58,375 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-28 05:12:58,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-28 05:12:58,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 05:12:58,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 05:12:58,376 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 05:12:58,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 05:12:58,542 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 05:12:58,544 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 05:12:59,241 INFO L? ?]: Removed 186 outVars from TransFormulas that were not future-live. [2024-11-28 05:12:59,242 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 05:12:59,263 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 05:12:59,266 INFO L312 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-28 05:12:59,266 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:12:59 BoogieIcfgContainer [2024-11-28 05:12:59,267 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 05:12:59,269 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 05:12:59,270 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 05:12:59,276 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 05:12:59,277 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 05:12:57" (1/3) ... [2024-11-28 05:12:59,278 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2882700f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:12:59, skipping insertion in model container [2024-11-28 05:12:59,278 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:12:58" (2/3) ... [2024-11-28 05:12:59,278 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2882700f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:12:59, skipping insertion in model container [2024-11-28 05:12:59,280 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:12:59" (3/3) ... [2024-11-28 05:12:59,281 INFO L128 eAbstractionObserver]: Analyzing ICFG test-0217_1.i [2024-11-28 05:12:59,299 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 05:12:59,302 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG test-0217_1.i that has 2 procedures, 170 locations, 1 initial locations, 6 loop locations, and 67 error locations. [2024-11-28 05:12:59,359 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 05:12:59,373 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;@5f4bae66, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 05:12:59,373 INFO L334 AbstractCegarLoop]: Starting to check reachability of 67 error locations. [2024-11-28 05:12:59,380 INFO L276 IsEmpty]: Start isEmpty. Operand has 170 states, 99 states have (on average 1.9696969696969697) internal successors, (195), 166 states have internal predecessors, (195), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 05:12:59,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-28 05:12:59,386 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:12:59,387 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-28 05:12:59,388 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr60REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2024-11-28 05:12:59,394 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:12:59,395 INFO L85 PathProgramCache]: Analyzing trace with hash 1045643339, now seen corresponding path program 1 times [2024-11-28 05:12:59,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:12:59,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527096639] [2024-11-28 05:12:59,405 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:12:59,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:12:59,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:12:59,556 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 05:12:59,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:12:59,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527096639] [2024-11-28 05:12:59,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527096639] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:12:59,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:12:59,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 05:12:59,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837587627] [2024-11-28 05:12:59,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:12:59,564 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 05:12:59,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:12:59,590 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 05:12:59,591 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 05:12:59,594 INFO L87 Difference]: Start difference. First operand has 170 states, 99 states have (on average 1.9696969696969697) internal successors, (195), 166 states have internal predecessors, (195), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 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 05:12:59,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:12:59,624 INFO L93 Difference]: Finished difference Result 170 states and 192 transitions. [2024-11-28 05:12:59,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 05:12:59,626 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 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 05:12:59,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:12:59,635 INFO L225 Difference]: With dead ends: 170 [2024-11-28 05:12:59,635 INFO L226 Difference]: Without dead ends: 168 [2024-11-28 05:12:59,638 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 05:12:59,644 INFO L435 NwaCegarLoop]: 192 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 05:12:59,645 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 05:12:59,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2024-11-28 05:12:59,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2024-11-28 05:12:59,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 98 states have (on average 1.8979591836734695) internal successors, (186), 164 states have internal predecessors, (186), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 05:12:59,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 190 transitions. [2024-11-28 05:12:59,698 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 190 transitions. Word has length 6 [2024-11-28 05:12:59,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:12:59,699 INFO L471 AbstractCegarLoop]: Abstraction has 168 states and 190 transitions. [2024-11-28 05:12:59,700 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 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 05:12:59,700 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 190 transitions. [2024-11-28 05:12:59,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-28 05:12:59,701 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:12:59,701 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:12:59,703 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 05:12:59,703 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr60REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2024-11-28 05:12:59,704 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:12:59,704 INFO L85 PathProgramCache]: Analyzing trace with hash 564850639, now seen corresponding path program 1 times [2024-11-28 05:12:59,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:12:59,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168179147] [2024-11-28 05:12:59,705 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:12:59,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:12:59,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:12:59,871 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 05:12:59,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:12:59,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168179147] [2024-11-28 05:12:59,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168179147] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:12:59,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:12:59,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 05:12:59,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805071142] [2024-11-28 05:12:59,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:12:59,873 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:12:59,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:12:59,874 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:12:59,874 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:12:59,874 INFO L87 Difference]: Start difference. First operand 168 states and 190 transitions. Second operand has 4 states, 4 states have (on average 2.0) 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 05:12:59,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:12:59,947 INFO L93 Difference]: Finished difference Result 331 states and 375 transitions. [2024-11-28 05:12:59,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:12:59,948 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) 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 05:12:59,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:12:59,952 INFO L225 Difference]: With dead ends: 331 [2024-11-28 05:12:59,952 INFO L226 Difference]: Without dead ends: 331 [2024-11-28 05:12:59,952 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 05:12:59,953 INFO L435 NwaCegarLoop]: 256 mSDtfsCounter, 180 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 695 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 05:12:59,953 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 695 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 05:12:59,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2024-11-28 05:12:59,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 170. [2024-11-28 05:12:59,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 100 states have (on average 1.88) internal successors, (188), 166 states have internal predecessors, (188), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 05:12:59,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 192 transitions. [2024-11-28 05:12:59,974 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 192 transitions. Word has length 8 [2024-11-28 05:12:59,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:12:59,974 INFO L471 AbstractCegarLoop]: Abstraction has 170 states and 192 transitions. [2024-11-28 05:12:59,974 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) 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 05:12:59,974 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 192 transitions. [2024-11-28 05:12:59,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-28 05:12:59,975 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:12:59,975 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:12:59,975 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 05:12:59,975 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr60REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2024-11-28 05:12:59,976 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:12:59,976 INFO L85 PathProgramCache]: Analyzing trace with hash 563003597, now seen corresponding path program 1 times [2024-11-28 05:12:59,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:12:59,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171012520] [2024-11-28 05:12:59,976 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:12:59,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:12:59,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:13:00,260 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 05:13:00,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:13:00,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171012520] [2024-11-28 05:13:00,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171012520] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:13:00,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:13:00,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 05:13:00,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141677330] [2024-11-28 05:13:00,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:13:00,262 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:13:00,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:13:00,262 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:13:00,262 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:13:00,262 INFO L87 Difference]: Start difference. First operand 170 states and 192 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 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 05:13:00,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:13:00,567 INFO L93 Difference]: Finished difference Result 271 states and 306 transitions. [2024-11-28 05:13:00,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:13:00,568 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 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 05:13:00,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:13:00,570 INFO L225 Difference]: With dead ends: 271 [2024-11-28 05:13:00,570 INFO L226 Difference]: Without dead ends: 271 [2024-11-28 05:13:00,570 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 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 05:13:00,574 INFO L435 NwaCegarLoop]: 163 mSDtfsCounter, 109 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 05:13:00,574 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 372 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 05:13:00,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2024-11-28 05:13:00,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 222. [2024-11-28 05:13:00,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 149 states have (on average 1.8724832214765101) internal successors, (279), 216 states have internal predecessors, (279), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-28 05:13:00,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 287 transitions. [2024-11-28 05:13:00,598 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 287 transitions. Word has length 8 [2024-11-28 05:13:00,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:13:00,598 INFO L471 AbstractCegarLoop]: Abstraction has 222 states and 287 transitions. [2024-11-28 05:13:00,600 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 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 05:13:00,600 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 287 transitions. [2024-11-28 05:13:00,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-28 05:13:00,601 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:13:00,601 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:13:00,601 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 05:13:00,601 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr59REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2024-11-28 05:13:00,601 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:13:00,602 INFO L85 PathProgramCache]: Analyzing trace with hash 563003596, now seen corresponding path program 1 times [2024-11-28 05:13:00,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:13:00,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874391635] [2024-11-28 05:13:00,602 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:13:00,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:13:00,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:13:00,706 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 05:13:00,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:13:00,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874391635] [2024-11-28 05:13:00,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874391635] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:13:00,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:13:00,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 05:13:00,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33043862] [2024-11-28 05:13:00,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:13:00,707 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:13:00,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:13:00,707 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:13:00,707 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:13:00,708 INFO L87 Difference]: Start difference. First operand 222 states and 287 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 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 05:13:00,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:13:00,972 INFO L93 Difference]: Finished difference Result 429 states and 554 transitions. [2024-11-28 05:13:00,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:13:00,972 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 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 05:13:00,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:13:00,977 INFO L225 Difference]: With dead ends: 429 [2024-11-28 05:13:00,977 INFO L226 Difference]: Without dead ends: 429 [2024-11-28 05:13:00,978 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 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 05:13:00,981 INFO L435 NwaCegarLoop]: 126 mSDtfsCounter, 170 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 05:13:00,982 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 247 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 05:13:00,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2024-11-28 05:13:01,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 318. [2024-11-28 05:13:01,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 239 states have (on average 1.8284518828451883) internal successors, (437), 307 states have internal predecessors, (437), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 6 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-28 05:13:01,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 453 transitions. [2024-11-28 05:13:01,011 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 453 transitions. Word has length 8 [2024-11-28 05:13:01,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:13:01,011 INFO L471 AbstractCegarLoop]: Abstraction has 318 states and 453 transitions. [2024-11-28 05:13:01,012 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 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 05:13:01,012 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 453 transitions. [2024-11-28 05:13:01,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-28 05:13:01,012 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:13:01,012 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:13:01,012 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 05:13:01,013 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr60REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2024-11-28 05:13:01,013 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:13:01,013 INFO L85 PathProgramCache]: Analyzing trace with hash 563003659, now seen corresponding path program 1 times [2024-11-28 05:13:01,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:13:01,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546713946] [2024-11-28 05:13:01,013 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:13:01,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:13:01,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:13:01,166 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 05:13:01,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:13:01,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546713946] [2024-11-28 05:13:01,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546713946] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:13:01,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:13:01,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 05:13:01,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035598446] [2024-11-28 05:13:01,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:13:01,167 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:13:01,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:13:01,169 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:13:01,170 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:13:01,170 INFO L87 Difference]: Start difference. First operand 318 states and 453 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 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 05:13:01,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:13:01,392 INFO L93 Difference]: Finished difference Result 368 states and 473 transitions. [2024-11-28 05:13:01,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:13:01,392 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 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 05:13:01,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:13:01,394 INFO L225 Difference]: With dead ends: 368 [2024-11-28 05:13:01,394 INFO L226 Difference]: Without dead ends: 368 [2024-11-28 05:13:01,395 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 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 05:13:01,395 INFO L435 NwaCegarLoop]: 164 mSDtfsCounter, 106 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 05:13:01,396 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 373 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 05:13:01,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2024-11-28 05:13:01,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 318. [2024-11-28 05:13:01,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 239 states have (on average 1.8284518828451883) internal successors, (437), 307 states have internal predecessors, (437), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 6 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-28 05:13:01,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 453 transitions. [2024-11-28 05:13:01,419 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 453 transitions. Word has length 8 [2024-11-28 05:13:01,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:13:01,419 INFO L471 AbstractCegarLoop]: Abstraction has 318 states and 453 transitions. [2024-11-28 05:13:01,419 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 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 05:13:01,419 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 453 transitions. [2024-11-28 05:13:01,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-28 05:13:01,420 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:13:01,420 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:13:01,420 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 05:13:01,420 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2024-11-28 05:13:01,421 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:13:01,421 INFO L85 PathProgramCache]: Analyzing trace with hash 593094939, now seen corresponding path program 1 times [2024-11-28 05:13:01,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:13:01,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984726639] [2024-11-28 05:13:01,421 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:13:01,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:13:01,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:13:01,492 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 05:13:01,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:13:01,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984726639] [2024-11-28 05:13:01,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984726639] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:13:01,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:13:01,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:13:01,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135011375] [2024-11-28 05:13:01,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:13:01,493 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:13:01,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:13:01,494 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:13:01,494 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:13:01,494 INFO L87 Difference]: Start difference. First operand 318 states and 453 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:13:01,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:13:01,528 INFO L93 Difference]: Finished difference Result 456 states and 607 transitions. [2024-11-28 05:13:01,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:13:01,529 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-28 05:13:01,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:13:01,531 INFO L225 Difference]: With dead ends: 456 [2024-11-28 05:13:01,531 INFO L226 Difference]: Without dead ends: 456 [2024-11-28 05:13:01,532 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:13:01,535 INFO L435 NwaCegarLoop]: 187 mSDtfsCounter, 158 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 05:13:01,536 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 370 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 05:13:01,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2024-11-28 05:13:01,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 320. [2024-11-28 05:13:01,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 241 states have (on average 1.8132780082987552) internal successors, (437), 309 states have internal predecessors, (437), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 6 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-28 05:13:01,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 453 transitions. [2024-11-28 05:13:01,557 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 453 transitions. Word has length 11 [2024-11-28 05:13:01,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:13:01,557 INFO L471 AbstractCegarLoop]: Abstraction has 320 states and 453 transitions. [2024-11-28 05:13:01,557 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:13:01,557 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 453 transitions. [2024-11-28 05:13:01,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-28 05:13:01,558 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:13:01,558 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:13:01,558 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 05:13:01,559 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr66ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2024-11-28 05:13:01,559 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:13:01,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1206076533, now seen corresponding path program 1 times [2024-11-28 05:13:01,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:13:01,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722990684] [2024-11-28 05:13:01,559 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:13:01,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:13:01,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:13:01,608 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 05:13:01,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:13:01,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722990684] [2024-11-28 05:13:01,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722990684] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:13:01,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:13:01,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 05:13:01,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891067088] [2024-11-28 05:13:01,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:13:01,609 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:13:01,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:13:01,609 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:13:01,609 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:13:01,609 INFO L87 Difference]: Start difference. First operand 320 states and 453 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 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 05:13:01,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:13:01,790 INFO L93 Difference]: Finished difference Result 371 states and 500 transitions. [2024-11-28 05:13:01,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:13:01,792 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 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 05:13:01,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:13:01,794 INFO L225 Difference]: With dead ends: 371 [2024-11-28 05:13:01,794 INFO L226 Difference]: Without dead ends: 364 [2024-11-28 05:13:01,794 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 05:13:01,795 INFO L435 NwaCegarLoop]: 164 mSDtfsCounter, 71 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 05:13:01,795 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 285 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 05:13:01,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2024-11-28 05:13:01,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 317. [2024-11-28 05:13:01,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 238 states have (on average 1.815126050420168) internal successors, (432), 306 states have internal predecessors, (432), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 6 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-28 05:13:01,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 448 transitions. [2024-11-28 05:13:01,813 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 448 transitions. Word has length 12 [2024-11-28 05:13:01,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:13:01,813 INFO L471 AbstractCegarLoop]: Abstraction has 317 states and 448 transitions. [2024-11-28 05:13:01,814 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 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 05:13:01,814 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 448 transitions. [2024-11-28 05:13:01,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-28 05:13:01,815 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:13:01,816 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:13:01,816 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 05:13:01,816 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2024-11-28 05:13:01,816 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:13:01,816 INFO L85 PathProgramCache]: Analyzing trace with hash -448454852, now seen corresponding path program 1 times [2024-11-28 05:13:01,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:13:01,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010275758] [2024-11-28 05:13:01,817 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:13:01,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:13:01,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:13:01,943 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 05:13:01,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:13:01,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010275758] [2024-11-28 05:13:01,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010275758] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:13:01,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:13:01,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:13:01,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369300305] [2024-11-28 05:13:01,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:13:01,944 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:13:01,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:13:01,944 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:13:01,945 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:13:01,945 INFO L87 Difference]: Start difference. First operand 317 states and 448 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:13:02,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:13:02,269 INFO L93 Difference]: Finished difference Result 425 states and 543 transitions. [2024-11-28 05:13:02,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:13:02,270 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2024-11-28 05:13:02,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:13:02,272 INFO L225 Difference]: With dead ends: 425 [2024-11-28 05:13:02,272 INFO L226 Difference]: Without dead ends: 425 [2024-11-28 05:13:02,272 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 05:13:02,273 INFO L435 NwaCegarLoop]: 125 mSDtfsCounter, 172 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 05:13:02,273 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 358 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 05:13:02,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2024-11-28 05:13:02,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 323. [2024-11-28 05:13:02,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 244 states have (on average 1.7950819672131149) internal successors, (438), 312 states have internal predecessors, (438), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 6 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-28 05:13:02,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 454 transitions. [2024-11-28 05:13:02,285 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 454 transitions. Word has length 17 [2024-11-28 05:13:02,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:13:02,286 INFO L471 AbstractCegarLoop]: Abstraction has 323 states and 454 transitions. [2024-11-28 05:13:02,286 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:13:02,286 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 454 transitions. [2024-11-28 05:13:02,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-28 05:13:02,287 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:13:02,287 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:13:02,287 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 05:13:02,287 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2024-11-28 05:13:02,288 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:13:02,288 INFO L85 PathProgramCache]: Analyzing trace with hash -448454851, now seen corresponding path program 1 times [2024-11-28 05:13:02,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:13:02,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091878093] [2024-11-28 05:13:02,288 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:13:02,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:13:02,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:13:02,425 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 05:13:02,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:13:02,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091878093] [2024-11-28 05:13:02,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091878093] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:13:02,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:13:02,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:13:02,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329785655] [2024-11-28 05:13:02,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:13:02,426 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:13:02,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:13:02,428 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:13:02,428 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:13:02,428 INFO L87 Difference]: Start difference. First operand 323 states and 454 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:13:02,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:13:02,663 INFO L93 Difference]: Finished difference Result 357 states and 454 transitions. [2024-11-28 05:13:02,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:13:02,663 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2024-11-28 05:13:02,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:13:02,665 INFO L225 Difference]: With dead ends: 357 [2024-11-28 05:13:02,665 INFO L226 Difference]: Without dead ends: 357 [2024-11-28 05:13:02,666 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 05:13:02,666 INFO L435 NwaCegarLoop]: 174 mSDtfsCounter, 94 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 05:13:02,666 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 432 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 05:13:02,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2024-11-28 05:13:02,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 323. [2024-11-28 05:13:02,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 244 states have (on average 1.7704918032786885) internal successors, (432), 312 states have internal predecessors, (432), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 6 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-28 05:13:02,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 448 transitions. [2024-11-28 05:13:02,677 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 448 transitions. Word has length 17 [2024-11-28 05:13:02,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:13:02,677 INFO L471 AbstractCegarLoop]: Abstraction has 323 states and 448 transitions. [2024-11-28 05:13:02,678 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:13:02,678 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 448 transitions. [2024-11-28 05:13:02,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-28 05:13:02,678 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:13:02,678 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:13:02,678 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 05:13:02,679 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2024-11-28 05:13:02,679 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:13:02,679 INFO L85 PathProgramCache]: Analyzing trace with hash -784193826, now seen corresponding path program 1 times [2024-11-28 05:13:02,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:13:02,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821361564] [2024-11-28 05:13:02,679 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:13:02,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:13:02,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:13:02,830 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 05:13:02,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:13:02,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821361564] [2024-11-28 05:13:02,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821361564] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:13:02,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:13:02,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 05:13:02,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188292002] [2024-11-28 05:13:02,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:13:02,831 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 05:13:02,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:13:02,832 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 05:13:02,832 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:13:02,832 INFO L87 Difference]: Start difference. First operand 323 states and 448 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:13:03,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:13:03,179 INFO L93 Difference]: Finished difference Result 439 states and 564 transitions. [2024-11-28 05:13:03,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 05:13:03,180 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2024-11-28 05:13:03,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:13:03,182 INFO L225 Difference]: With dead ends: 439 [2024-11-28 05:13:03,182 INFO L226 Difference]: Without dead ends: 439 [2024-11-28 05:13:03,183 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-28 05:13:03,183 INFO L435 NwaCegarLoop]: 119 mSDtfsCounter, 327 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 327 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 05:13:03,184 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [327 Valid, 342 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 05:13:03,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2024-11-28 05:13:03,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 320. [2024-11-28 05:13:03,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 245 states have (on average 1.7387755102040816) internal successors, (426), 309 states have internal predecessors, (426), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 6 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-28 05:13:03,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 442 transitions. [2024-11-28 05:13:03,201 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 442 transitions. Word has length 18 [2024-11-28 05:13:03,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:13:03,202 INFO L471 AbstractCegarLoop]: Abstraction has 320 states and 442 transitions. [2024-11-28 05:13:03,202 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:13:03,202 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 442 transitions. [2024-11-28 05:13:03,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-28 05:13:03,203 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:13:03,203 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:13:03,203 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-28 05:13:03,204 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2024-11-28 05:13:03,204 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:13:03,204 INFO L85 PathProgramCache]: Analyzing trace with hash -784193825, now seen corresponding path program 1 times [2024-11-28 05:13:03,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:13:03,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769312589] [2024-11-28 05:13:03,205 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:13:03,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:13:03,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:13:03,508 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 05:13:03,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:13:03,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769312589] [2024-11-28 05:13:03,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769312589] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:13:03,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:13:03,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 05:13:03,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948245070] [2024-11-28 05:13:03,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:13:03,510 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 05:13:03,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:13:03,510 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 05:13:03,510 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-28 05:13:03,511 INFO L87 Difference]: Start difference. First operand 320 states and 442 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:13:04,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:13:04,053 INFO L93 Difference]: Finished difference Result 450 states and 566 transitions. [2024-11-28 05:13:04,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 05:13:04,054 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2024-11-28 05:13:04,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:13:04,056 INFO L225 Difference]: With dead ends: 450 [2024-11-28 05:13:04,056 INFO L226 Difference]: Without dead ends: 450 [2024-11-28 05:13:04,057 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-28 05:13:04,058 INFO L435 NwaCegarLoop]: 102 mSDtfsCounter, 265 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 443 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 05:13:04,058 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [266 Valid, 479 Invalid, 448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 443 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 05:13:04,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2024-11-28 05:13:04,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 340. [2024-11-28 05:13:04,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 265 states have (on average 1.739622641509434) internal successors, (461), 329 states have internal predecessors, (461), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 6 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-28 05:13:04,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 477 transitions. [2024-11-28 05:13:04,071 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 477 transitions. Word has length 18 [2024-11-28 05:13:04,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:13:04,071 INFO L471 AbstractCegarLoop]: Abstraction has 340 states and 477 transitions. [2024-11-28 05:13:04,071 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:13:04,071 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 477 transitions. [2024-11-28 05:13:04,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-28 05:13:04,072 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:13:04,072 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:13:04,072 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-28 05:13:04,072 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2024-11-28 05:13:04,072 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:13:04,073 INFO L85 PathProgramCache]: Analyzing trace with hash -2079818588, now seen corresponding path program 1 times [2024-11-28 05:13:04,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:13:04,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324227014] [2024-11-28 05:13:04,073 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:13:04,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:13:04,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:13:04,453 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 05:13:04,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:13:04,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324227014] [2024-11-28 05:13:04,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324227014] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:13:04,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:13:04,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-28 05:13:04,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321521438] [2024-11-28 05:13:04,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:13:04,454 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 05:13:04,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:13:04,455 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 05:13:04,455 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-28 05:13:04,455 INFO L87 Difference]: Start difference. First operand 340 states and 477 transitions. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:13:04,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:13:04,910 INFO L93 Difference]: Finished difference Result 500 states and 678 transitions. [2024-11-28 05:13:04,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 05:13:04,911 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2024-11-28 05:13:04,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:13:04,913 INFO L225 Difference]: With dead ends: 500 [2024-11-28 05:13:04,913 INFO L226 Difference]: Without dead ends: 500 [2024-11-28 05:13:04,913 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2024-11-28 05:13:04,914 INFO L435 NwaCegarLoop]: 169 mSDtfsCounter, 131 mSDsluCounter, 924 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 1093 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 05:13:04,914 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 1093 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 05:13:04,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2024-11-28 05:13:04,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 399. [2024-11-28 05:13:04,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 321 states have (on average 1.7009345794392523) internal successors, (546), 384 states have internal predecessors, (546), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-28 05:13:04,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 566 transitions. [2024-11-28 05:13:04,929 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 566 transitions. Word has length 22 [2024-11-28 05:13:04,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:13:04,929 INFO L471 AbstractCegarLoop]: Abstraction has 399 states and 566 transitions. [2024-11-28 05:13:04,929 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:13:04,929 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 566 transitions. [2024-11-28 05:13:04,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-28 05:13:04,932 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:13:04,932 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:13:04,932 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-28 05:13:04,933 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2024-11-28 05:13:04,933 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:13:04,933 INFO L85 PathProgramCache]: Analyzing trace with hash -231638393, now seen corresponding path program 1 times [2024-11-28 05:13:04,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:13:04,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603594672] [2024-11-28 05:13:04,933 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:13:04,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:13:04,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:13:05,022 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 05:13:05,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:13:05,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603594672] [2024-11-28 05:13:05,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603594672] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:13:05,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:13:05,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 05:13:05,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652637364] [2024-11-28 05:13:05,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:13:05,023 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 05:13:05,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:13:05,024 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 05:13:05,024 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:13:05,024 INFO L87 Difference]: Start difference. First operand 399 states and 566 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:13:05,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:13:05,052 INFO L93 Difference]: Finished difference Result 397 states and 558 transitions. [2024-11-28 05:13:05,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 05:13:05,053 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2024-11-28 05:13:05,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:13:05,054 INFO L225 Difference]: With dead ends: 397 [2024-11-28 05:13:05,054 INFO L226 Difference]: Without dead ends: 397 [2024-11-28 05:13:05,055 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-28 05:13:05,055 INFO L435 NwaCegarLoop]: 180 mSDtfsCounter, 50 mSDsluCounter, 663 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 843 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 05:13:05,055 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 843 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 05:13:05,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2024-11-28 05:13:05,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 397. [2024-11-28 05:13:05,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 319 states have (on average 1.6865203761755485) internal successors, (538), 382 states have internal predecessors, (538), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-28 05:13:05,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 558 transitions. [2024-11-28 05:13:05,067 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 558 transitions. Word has length 23 [2024-11-28 05:13:05,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:13:05,067 INFO L471 AbstractCegarLoop]: Abstraction has 397 states and 558 transitions. [2024-11-28 05:13:05,067 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:13:05,067 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 558 transitions. [2024-11-28 05:13:05,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-28 05:13:05,067 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:13:05,068 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:13:05,068 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-28 05:13:05,068 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2024-11-28 05:13:05,068 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:13:05,068 INFO L85 PathProgramCache]: Analyzing trace with hash 2039400832, now seen corresponding path program 1 times [2024-11-28 05:13:05,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:13:05,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939526013] [2024-11-28 05:13:05,068 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:13:05,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:13:05,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:13:05,370 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 05:13:05,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:13:05,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939526013] [2024-11-28 05:13:05,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939526013] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:13:05,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:13:05,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-28 05:13:05,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865622045] [2024-11-28 05:13:05,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:13:05,371 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 05:13:05,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:13:05,371 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 05:13:05,371 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 05:13:05,372 INFO L87 Difference]: Start difference. First operand 397 states and 558 transitions. Second operand has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:13:05,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:13:05,813 INFO L93 Difference]: Finished difference Result 440 states and 583 transitions. [2024-11-28 05:13:05,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 05:13:05,813 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2024-11-28 05:13:05,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:13:05,815 INFO L225 Difference]: With dead ends: 440 [2024-11-28 05:13:05,815 INFO L226 Difference]: Without dead ends: 440 [2024-11-28 05:13:05,815 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2024-11-28 05:13:05,816 INFO L435 NwaCegarLoop]: 172 mSDtfsCounter, 95 mSDsluCounter, 926 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 1098 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 05:13:05,816 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 1098 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 05:13:05,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2024-11-28 05:13:05,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 391. [2024-11-28 05:13:05,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 313 states have (on average 1.68370607028754) internal successors, (527), 376 states have internal predecessors, (527), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-28 05:13:05,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 547 transitions. [2024-11-28 05:13:05,827 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 547 transitions. Word has length 23 [2024-11-28 05:13:05,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:13:05,827 INFO L471 AbstractCegarLoop]: Abstraction has 391 states and 547 transitions. [2024-11-28 05:13:05,827 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:13:05,827 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 547 transitions. [2024-11-28 05:13:05,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-28 05:13:05,828 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:13:05,828 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:13:05,828 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-28 05:13:05,828 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2024-11-28 05:13:05,829 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:13:05,829 INFO L85 PathProgramCache]: Analyzing trace with hash -1537114374, now seen corresponding path program 1 times [2024-11-28 05:13:05,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:13:05,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458185548] [2024-11-28 05:13:05,829 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:13:05,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:13:05,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:13:05,880 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 05:13:05,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:13:05,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458185548] [2024-11-28 05:13:05,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458185548] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:13:05,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:13:05,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 05:13:05,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832474632] [2024-11-28 05:13:05,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:13:05,881 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:13:05,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:13:05,881 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:13:05,881 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:13:05,881 INFO L87 Difference]: Start difference. First operand 391 states and 547 transitions. Second operand has 3 states, 2 states have (on average 11.0) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:13:05,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:13:05,978 INFO L93 Difference]: Finished difference Result 388 states and 538 transitions. [2024-11-28 05:13:05,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:13:05,979 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 11.0) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2024-11-28 05:13:05,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:13:05,981 INFO L225 Difference]: With dead ends: 388 [2024-11-28 05:13:05,981 INFO L226 Difference]: Without dead ends: 388 [2024-11-28 05:13:05,981 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 05:13:05,982 INFO L435 NwaCegarLoop]: 163 mSDtfsCounter, 26 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 05:13:05,982 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 254 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 05:13:05,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2024-11-28 05:13:05,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 388. [2024-11-28 05:13:05,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 313 states have (on average 1.6549520766773163) internal successors, (518), 373 states have internal predecessors, (518), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-28 05:13:05,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 538 transitions. [2024-11-28 05:13:05,996 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 538 transitions. Word has length 24 [2024-11-28 05:13:05,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:13:05,996 INFO L471 AbstractCegarLoop]: Abstraction has 388 states and 538 transitions. [2024-11-28 05:13:05,996 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 11.0) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:13:05,996 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 538 transitions. [2024-11-28 05:13:05,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-28 05:13:05,996 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:13:05,997 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:13:05,997 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-28 05:13:05,997 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2024-11-28 05:13:05,997 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:13:05,997 INFO L85 PathProgramCache]: Analyzing trace with hash -1537114373, now seen corresponding path program 1 times [2024-11-28 05:13:05,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:13:05,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559201389] [2024-11-28 05:13:05,997 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:13:05,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:13:06,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:13:06,108 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 05:13:06,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:13:06,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559201389] [2024-11-28 05:13:06,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559201389] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:13:06,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:13:06,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:13:06,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100532374] [2024-11-28 05:13:06,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:13:06,110 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:13:06,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:13:06,111 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:13:06,111 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:13:06,111 INFO L87 Difference]: Start difference. First operand 388 states and 538 transitions. Second operand has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:13:06,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:13:06,251 INFO L93 Difference]: Finished difference Result 386 states and 532 transitions. [2024-11-28 05:13:06,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:13:06,251 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2024-11-28 05:13:06,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:13:06,253 INFO L225 Difference]: With dead ends: 386 [2024-11-28 05:13:06,253 INFO L226 Difference]: Without dead ends: 386 [2024-11-28 05:13:06,253 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 05:13:06,254 INFO L435 NwaCegarLoop]: 159 mSDtfsCounter, 26 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 05:13:06,254 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 366 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 05:13:06,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2024-11-28 05:13:06,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 386. [2024-11-28 05:13:06,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 313 states have (on average 1.6357827476038338) internal successors, (512), 371 states have internal predecessors, (512), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-28 05:13:06,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 532 transitions. [2024-11-28 05:13:06,269 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 532 transitions. Word has length 24 [2024-11-28 05:13:06,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:13:06,269 INFO L471 AbstractCegarLoop]: Abstraction has 386 states and 532 transitions. [2024-11-28 05:13:06,269 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:13:06,269 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 532 transitions. [2024-11-28 05:13:06,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-28 05:13:06,270 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:13:06,270 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:13:06,270 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-28 05:13:06,270 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr37REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2024-11-28 05:13:06,270 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:13:06,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1366754475, now seen corresponding path program 1 times [2024-11-28 05:13:06,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:13:06,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871332699] [2024-11-28 05:13:06,271 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:13:06,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:13:06,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:13:06,350 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 05:13:06,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:13:06,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871332699] [2024-11-28 05:13:06,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871332699] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:13:06,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:13:06,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 05:13:06,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199763859] [2024-11-28 05:13:06,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:13:06,352 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 05:13:06,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:13:06,353 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 05:13:06,353 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:13:06,354 INFO L87 Difference]: Start difference. First operand 386 states and 532 transitions. Second operand has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:13:06,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:13:06,509 INFO L93 Difference]: Finished difference Result 391 states and 531 transitions. [2024-11-28 05:13:06,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 05:13:06,510 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2024-11-28 05:13:06,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:13:06,513 INFO L225 Difference]: With dead ends: 391 [2024-11-28 05:13:06,514 INFO L226 Difference]: Without dead ends: 391 [2024-11-28 05:13:06,514 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:13:06,515 INFO L435 NwaCegarLoop]: 148 mSDtfsCounter, 30 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 477 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 05:13:06,515 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 477 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 05:13:06,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2024-11-28 05:13:06,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 385. [2024-11-28 05:13:06,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 318 states have (on average 1.5817610062893082) internal successors, (503), 370 states have internal predecessors, (503), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-28 05:13:06,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 523 transitions. [2024-11-28 05:13:06,529 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 523 transitions. Word has length 25 [2024-11-28 05:13:06,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:13:06,529 INFO L471 AbstractCegarLoop]: Abstraction has 385 states and 523 transitions. [2024-11-28 05:13:06,529 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:13:06,530 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 523 transitions. [2024-11-28 05:13:06,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-28 05:13:06,530 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:13:06,530 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:13:06,531 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-28 05:13:06,531 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2024-11-28 05:13:06,531 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:13:06,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1366754476, now seen corresponding path program 1 times [2024-11-28 05:13:06,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:13:06,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943219725] [2024-11-28 05:13:06,532 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:13:06,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:13:06,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:13:06,768 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 05:13:06,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:13:06,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943219725] [2024-11-28 05:13:06,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943219725] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:13:06,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:13:06,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-28 05:13:06,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013906485] [2024-11-28 05:13:06,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:13:06,768 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 05:13:06,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:13:06,769 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 05:13:06,769 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 05:13:06,769 INFO L87 Difference]: Start difference. First operand 385 states and 523 transitions. Second operand has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:13:06,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:13:06,994 INFO L93 Difference]: Finished difference Result 286 states and 367 transitions. [2024-11-28 05:13:06,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 05:13:06,994 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2024-11-28 05:13:06,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:13:06,996 INFO L225 Difference]: With dead ends: 286 [2024-11-28 05:13:06,996 INFO L226 Difference]: Without dead ends: 286 [2024-11-28 05:13:06,996 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2024-11-28 05:13:06,997 INFO L435 NwaCegarLoop]: 160 mSDtfsCounter, 39 mSDsluCounter, 905 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 1065 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 05:13:06,997 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 1065 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 05:13:06,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2024-11-28 05:13:07,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 282. [2024-11-28 05:13:07,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 221 states have (on average 1.588235294117647) internal successors, (351), 272 states have internal predecessors, (351), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-28 05:13:07,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 363 transitions. [2024-11-28 05:13:07,004 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 363 transitions. Word has length 25 [2024-11-28 05:13:07,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:13:07,004 INFO L471 AbstractCegarLoop]: Abstraction has 282 states and 363 transitions. [2024-11-28 05:13:07,004 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:13:07,004 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 363 transitions. [2024-11-28 05:13:07,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-28 05:13:07,005 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:13:07,005 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:13:07,005 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-28 05:13:07,005 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2024-11-28 05:13:07,006 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:13:07,006 INFO L85 PathProgramCache]: Analyzing trace with hash 301839101, now seen corresponding path program 1 times [2024-11-28 05:13:07,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:13:07,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377569898] [2024-11-28 05:13:07,006 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:13:07,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:13:07,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:13:07,111 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 05:13:07,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:13:07,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377569898] [2024-11-28 05:13:07,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377569898] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:13:07,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:13:07,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 05:13:07,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169650516] [2024-11-28 05:13:07,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:13:07,112 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 05:13:07,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:13:07,112 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 05:13:07,113 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:13:07,113 INFO L87 Difference]: Start difference. First operand 282 states and 363 transitions. Second operand has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:13:07,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:13:07,230 INFO L93 Difference]: Finished difference Result 281 states and 360 transitions. [2024-11-28 05:13:07,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 05:13:07,232 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2024-11-28 05:13:07,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:13:07,233 INFO L225 Difference]: With dead ends: 281 [2024-11-28 05:13:07,233 INFO L226 Difference]: Without dead ends: 281 [2024-11-28 05:13:07,233 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 05:13:07,234 INFO L435 NwaCegarLoop]: 161 mSDtfsCounter, 24 mSDsluCounter, 374 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 535 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 05:13:07,234 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 535 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 05:13:07,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2024-11-28 05:13:07,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 281. [2024-11-28 05:13:07,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 221 states have (on average 1.5746606334841629) internal successors, (348), 271 states have internal predecessors, (348), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-28 05:13:07,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 360 transitions. [2024-11-28 05:13:07,242 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 360 transitions. Word has length 26 [2024-11-28 05:13:07,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:13:07,243 INFO L471 AbstractCegarLoop]: Abstraction has 281 states and 360 transitions. [2024-11-28 05:13:07,243 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:13:07,243 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 360 transitions. [2024-11-28 05:13:07,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-28 05:13:07,244 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:13:07,244 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:13:07,244 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-28 05:13:07,244 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2024-11-28 05:13:07,245 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:13:07,245 INFO L85 PathProgramCache]: Analyzing trace with hash 301838907, now seen corresponding path program 1 times [2024-11-28 05:13:07,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:13:07,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092051079] [2024-11-28 05:13:07,245 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:13:07,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:13:07,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:13:07,400 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 05:13:07,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:13:07,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092051079] [2024-11-28 05:13:07,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092051079] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:13:07,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:13:07,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 05:13:07,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852264164] [2024-11-28 05:13:07,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:13:07,401 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 05:13:07,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:13:07,401 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 05:13:07,402 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-28 05:13:07,402 INFO L87 Difference]: Start difference. First operand 281 states and 360 transitions. Second operand has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:13:07,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:13:07,575 INFO L93 Difference]: Finished difference Result 311 states and 392 transitions. [2024-11-28 05:13:07,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 05:13:07,576 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2024-11-28 05:13:07,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:13:07,577 INFO L225 Difference]: With dead ends: 311 [2024-11-28 05:13:07,577 INFO L226 Difference]: Without dead ends: 311 [2024-11-28 05:13:07,577 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-28 05:13:07,578 INFO L435 NwaCegarLoop]: 161 mSDtfsCounter, 12 mSDsluCounter, 564 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 725 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 05:13:07,578 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 725 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 05:13:07,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2024-11-28 05:13:07,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 308. [2024-11-28 05:13:07,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 248 states have (on average 1.5201612903225807) internal successors, (377), 298 states have internal predecessors, (377), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-28 05:13:07,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 389 transitions. [2024-11-28 05:13:07,591 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 389 transitions. Word has length 26 [2024-11-28 05:13:07,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:13:07,591 INFO L471 AbstractCegarLoop]: Abstraction has 308 states and 389 transitions. [2024-11-28 05:13:07,591 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:13:07,591 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 389 transitions. [2024-11-28 05:13:07,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-28 05:13:07,592 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:13:07,593 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:13:07,593 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-28 05:13:07,594 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2024-11-28 05:13:07,594 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:13:07,594 INFO L85 PathProgramCache]: Analyzing trace with hash -1472935255, now seen corresponding path program 1 times [2024-11-28 05:13:07,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:13:07,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949372960] [2024-11-28 05:13:07,595 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:13:07,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:13:07,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:13:07,708 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 05:13:07,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:13:07,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949372960] [2024-11-28 05:13:07,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949372960] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:13:07,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:13:07,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 05:13:07,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463955258] [2024-11-28 05:13:07,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:13:07,709 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 05:13:07,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:13:07,709 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 05:13:07,709 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:13:07,710 INFO L87 Difference]: Start difference. First operand 308 states and 389 transitions. Second operand has 6 states, 5 states have (on average 6.4) internal successors, (32), 6 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:13:07,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:13:07,898 INFO L93 Difference]: Finished difference Result 309 states and 389 transitions. [2024-11-28 05:13:07,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 05:13:07,899 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 6 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 34 [2024-11-28 05:13:07,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:13:07,901 INFO L225 Difference]: With dead ends: 309 [2024-11-28 05:13:07,901 INFO L226 Difference]: Without dead ends: 309 [2024-11-28 05:13:07,902 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:13:07,902 INFO L435 NwaCegarLoop]: 143 mSDtfsCounter, 49 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 556 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 05:13:07,903 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 556 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 05:13:07,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2024-11-28 05:13:07,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 307. [2024-11-28 05:13:07,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 248 states have (on average 1.5120967741935485) internal successors, (375), 297 states have internal predecessors, (375), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-28 05:13:07,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 387 transitions. [2024-11-28 05:13:07,913 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 387 transitions. Word has length 34 [2024-11-28 05:13:07,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:13:07,914 INFO L471 AbstractCegarLoop]: Abstraction has 307 states and 387 transitions. [2024-11-28 05:13:07,914 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 6 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:13:07,914 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 387 transitions. [2024-11-28 05:13:07,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-28 05:13:07,915 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:13:07,915 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:13:07,915 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-28 05:13:07,915 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2024-11-28 05:13:07,916 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:13:07,916 INFO L85 PathProgramCache]: Analyzing trace with hash -1472935254, now seen corresponding path program 1 times [2024-11-28 05:13:07,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:13:07,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807802257] [2024-11-28 05:13:07,916 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:13:07,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:13:07,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:13:08,127 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 05:13:08,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:13:08,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807802257] [2024-11-28 05:13:08,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807802257] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:13:08,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:13:08,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 05:13:08,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586037858] [2024-11-28 05:13:08,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:13:08,128 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 05:13:08,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:13:08,129 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 05:13:08,129 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:13:08,129 INFO L87 Difference]: Start difference. First operand 307 states and 387 transitions. Second operand has 6 states, 5 states have (on average 6.4) internal successors, (32), 6 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:13:08,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:13:08,336 INFO L93 Difference]: Finished difference Result 308 states and 387 transitions. [2024-11-28 05:13:08,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 05:13:08,337 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 6 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 34 [2024-11-28 05:13:08,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:13:08,338 INFO L225 Difference]: With dead ends: 308 [2024-11-28 05:13:08,338 INFO L226 Difference]: Without dead ends: 308 [2024-11-28 05:13:08,338 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:13:08,340 INFO L435 NwaCegarLoop]: 139 mSDtfsCounter, 39 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 560 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 05:13:08,340 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 560 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 05:13:08,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2024-11-28 05:13:08,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 306. [2024-11-28 05:13:08,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 248 states have (on average 1.5040322580645162) internal successors, (373), 296 states have internal predecessors, (373), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-28 05:13:08,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 385 transitions. [2024-11-28 05:13:08,349 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 385 transitions. Word has length 34 [2024-11-28 05:13:08,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:13:08,349 INFO L471 AbstractCegarLoop]: Abstraction has 306 states and 385 transitions. [2024-11-28 05:13:08,349 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 6 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:13:08,350 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 385 transitions. [2024-11-28 05:13:08,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-28 05:13:08,350 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:13:08,350 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:13:08,350 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-28 05:13:08,350 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2024-11-28 05:13:08,351 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:13:08,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1848431274, now seen corresponding path program 1 times [2024-11-28 05:13:08,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:13:08,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752387058] [2024-11-28 05:13:08,351 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:13:08,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:13:08,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:13:08,453 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 05:13:08,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:13:08,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752387058] [2024-11-28 05:13:08,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752387058] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:13:08,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:13:08,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 05:13:08,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072907357] [2024-11-28 05:13:08,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:13:08,455 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 05:13:08,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:13:08,455 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 05:13:08,455 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:13:08,456 INFO L87 Difference]: Start difference. First operand 306 states and 385 transitions. Second operand has 5 states, 4 states have (on average 8.5) internal successors, (34), 5 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:13:08,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:13:08,637 INFO L93 Difference]: Finished difference Result 344 states and 429 transitions. [2024-11-28 05:13:08,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 05:13:08,638 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 8.5) internal successors, (34), 5 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 36 [2024-11-28 05:13:08,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:13:08,639 INFO L225 Difference]: With dead ends: 344 [2024-11-28 05:13:08,639 INFO L226 Difference]: Without dead ends: 344 [2024-11-28 05:13:08,639 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:13:08,640 INFO L435 NwaCegarLoop]: 144 mSDtfsCounter, 62 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 461 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 05:13:08,640 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 461 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 05:13:08,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2024-11-28 05:13:08,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 303. [2024-11-28 05:13:08,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 248 states have (on average 1.4798387096774193) internal successors, (367), 293 states have internal predecessors, (367), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-28 05:13:08,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 379 transitions. [2024-11-28 05:13:08,649 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 379 transitions. Word has length 36 [2024-11-28 05:13:08,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:13:08,649 INFO L471 AbstractCegarLoop]: Abstraction has 303 states and 379 transitions. [2024-11-28 05:13:08,650 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 8.5) internal successors, (34), 5 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:13:08,650 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 379 transitions. [2024-11-28 05:13:08,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-28 05:13:08,650 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:13:08,650 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:13:08,650 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-28 05:13:08,651 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2024-11-28 05:13:08,651 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:13:08,651 INFO L85 PathProgramCache]: Analyzing trace with hash 1848431275, now seen corresponding path program 1 times [2024-11-28 05:13:08,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:13:08,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961843256] [2024-11-28 05:13:08,651 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:13:08,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:13:08,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:13:08,866 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 05:13:08,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:13:08,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961843256] [2024-11-28 05:13:08,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961843256] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:13:08,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:13:08,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 05:13:08,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511096762] [2024-11-28 05:13:08,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:13:08,867 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 05:13:08,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:13:08,867 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 05:13:08,867 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:13:08,868 INFO L87 Difference]: Start difference. First operand 303 states and 379 transitions. Second operand has 6 states, 5 states have (on average 6.8) internal successors, (34), 6 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:13:09,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:13:09,101 INFO L93 Difference]: Finished difference Result 343 states and 427 transitions. [2024-11-28 05:13:09,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 05:13:09,101 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.8) internal successors, (34), 6 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 36 [2024-11-28 05:13:09,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:13:09,103 INFO L225 Difference]: With dead ends: 343 [2024-11-28 05:13:09,103 INFO L226 Difference]: Without dead ends: 343 [2024-11-28 05:13:09,103 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-28 05:13:09,103 INFO L435 NwaCegarLoop]: 136 mSDtfsCounter, 281 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 435 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 05:13:09,104 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [281 Valid, 435 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 05:13:09,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2024-11-28 05:13:09,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 302. [2024-11-28 05:13:09,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 248 states have (on average 1.471774193548387) internal successors, (365), 292 states have internal predecessors, (365), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-28 05:13:09,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 377 transitions. [2024-11-28 05:13:09,112 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 377 transitions. Word has length 36 [2024-11-28 05:13:09,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:13:09,112 INFO L471 AbstractCegarLoop]: Abstraction has 302 states and 377 transitions. [2024-11-28 05:13:09,112 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.8) internal successors, (34), 6 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:13:09,112 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 377 transitions. [2024-11-28 05:13:09,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-28 05:13:09,113 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:13:09,113 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:13:09,113 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-28 05:13:09,113 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2024-11-28 05:13:09,113 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:13:09,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1848431436, now seen corresponding path program 1 times [2024-11-28 05:13:09,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:13:09,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831959588] [2024-11-28 05:13:09,113 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:13:09,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:13:09,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:13:09,488 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 05:13:09,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:13:09,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831959588] [2024-11-28 05:13:09,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831959588] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:13:09,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:13:09,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 05:13:09,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195875299] [2024-11-28 05:13:09,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:13:09,489 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 05:13:09,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:13:09,489 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 05:13:09,490 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-28 05:13:09,490 INFO L87 Difference]: Start difference. First operand 302 states and 377 transitions. Second operand has 8 states, 7 states have (on average 4.857142857142857) internal successors, (34), 6 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:13:10,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:13:10,056 INFO L93 Difference]: Finished difference Result 373 states and 428 transitions. [2024-11-28 05:13:10,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 05:13:10,057 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.857142857142857) internal successors, (34), 6 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 36 [2024-11-28 05:13:10,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:13:10,058 INFO L225 Difference]: With dead ends: 373 [2024-11-28 05:13:10,058 INFO L226 Difference]: Without dead ends: 373 [2024-11-28 05:13:10,059 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2024-11-28 05:13:10,059 INFO L435 NwaCegarLoop]: 100 mSDtfsCounter, 232 mSDsluCounter, 547 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 647 SdHoareTripleChecker+Invalid, 492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 05:13:10,059 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 647 Invalid, 492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 490 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 05:13:10,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2024-11-28 05:13:10,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 302. [2024-11-28 05:13:10,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 248 states have (on average 1.4637096774193548) internal successors, (363), 292 states have internal predecessors, (363), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-28 05:13:10,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 375 transitions. [2024-11-28 05:13:10,068 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 375 transitions. Word has length 36 [2024-11-28 05:13:10,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:13:10,068 INFO L471 AbstractCegarLoop]: Abstraction has 302 states and 375 transitions. [2024-11-28 05:13:10,068 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.857142857142857) internal successors, (34), 6 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:13:10,068 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 375 transitions. [2024-11-28 05:13:10,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-28 05:13:10,069 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:13:10,069 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:13:10,069 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-28 05:13:10,069 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2024-11-28 05:13:10,069 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:13:10,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1991178075, now seen corresponding path program 1 times [2024-11-28 05:13:10,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:13:10,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098226068] [2024-11-28 05:13:10,070 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:13:10,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:13:10,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:13:10,308 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 05:13:10,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:13:10,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098226068] [2024-11-28 05:13:10,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098226068] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:13:10,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2040121352] [2024-11-28 05:13:10,309 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:13:10,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:13:10,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:13:10,311 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:13:10,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 05:13:10,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:13:10,480 INFO L256 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-28 05:13:10,487 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:13:10,971 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:13:10,972 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:13:10,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2040121352] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:13:10,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 05:13:10,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 9 [2024-11-28 05:13:10,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074186619] [2024-11-28 05:13:10,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:13:10,973 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 05:13:10,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:13:10,974 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 05:13:10,974 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-28 05:13:10,975 INFO L87 Difference]: Start difference. First operand 302 states and 375 transitions. Second operand has 6 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 05:13:11,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:13:11,176 INFO L93 Difference]: Finished difference Result 302 states and 374 transitions. [2024-11-28 05:13:11,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 05:13:11,176 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 50 [2024-11-28 05:13:11,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:13:11,177 INFO L225 Difference]: With dead ends: 302 [2024-11-28 05:13:11,178 INFO L226 Difference]: Without dead ends: 302 [2024-11-28 05:13:11,178 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2024-11-28 05:13:11,179 INFO L435 NwaCegarLoop]: 110 mSDtfsCounter, 309 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 05:13:11,180 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [309 Valid, 280 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 05:13:11,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2024-11-28 05:13:11,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 300. [2024-11-28 05:13:11,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 248 states have (on average 1.4516129032258065) internal successors, (360), 290 states have internal predecessors, (360), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-28 05:13:11,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 372 transitions. [2024-11-28 05:13:11,188 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 372 transitions. Word has length 50 [2024-11-28 05:13:11,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:13:11,189 INFO L471 AbstractCegarLoop]: Abstraction has 300 states and 372 transitions. [2024-11-28 05:13:11,189 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 05:13:11,189 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 372 transitions. [2024-11-28 05:13:11,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-28 05:13:11,189 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:13:11,190 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:13:11,200 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 05:13:11,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:13:11,394 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2024-11-28 05:13:11,394 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:13:11,394 INFO L85 PathProgramCache]: Analyzing trace with hash -2033279876, now seen corresponding path program 1 times [2024-11-28 05:13:11,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:13:11,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345692653] [2024-11-28 05:13:11,394 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:13:11,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:13:11,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:13:11,639 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 05:13:11,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:13:11,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345692653] [2024-11-28 05:13:11,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345692653] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:13:11,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:13:11,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 05:13:11,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416972832] [2024-11-28 05:13:11,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:13:11,641 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 05:13:11,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:13:11,641 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 05:13:11,641 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:13:11,641 INFO L87 Difference]: Start difference. First operand 300 states and 372 transitions. Second operand has 6 states, 5 states have (on average 9.2) internal successors, (46), 6 states have internal predecessors, (46), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 05:13:11,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:13:11,831 INFO L93 Difference]: Finished difference Result 301 states and 372 transitions. [2024-11-28 05:13:11,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 05:13:11,831 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.2) internal successors, (46), 6 states have internal predecessors, (46), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 52 [2024-11-28 05:13:11,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:13:11,833 INFO L225 Difference]: With dead ends: 301 [2024-11-28 05:13:11,833 INFO L226 Difference]: Without dead ends: 301 [2024-11-28 05:13:11,833 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-28 05:13:11,834 INFO L435 NwaCegarLoop]: 130 mSDtfsCounter, 142 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 05:13:11,834 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 329 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 05:13:11,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2024-11-28 05:13:11,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 299. [2024-11-28 05:13:11,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 248 states have (on average 1.4435483870967742) internal successors, (358), 289 states have internal predecessors, (358), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-28 05:13:11,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 370 transitions. [2024-11-28 05:13:11,842 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 370 transitions. Word has length 52 [2024-11-28 05:13:11,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:13:11,842 INFO L471 AbstractCegarLoop]: Abstraction has 299 states and 370 transitions. [2024-11-28 05:13:11,842 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.2) internal successors, (46), 6 states have internal predecessors, (46), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 05:13:11,842 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 370 transitions. [2024-11-28 05:13:11,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-28 05:13:11,843 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:13:11,843 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:13:11,843 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-28 05:13:11,843 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr60REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2024-11-28 05:13:11,844 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:13:11,844 INFO L85 PathProgramCache]: Analyzing trace with hash 652137668, now seen corresponding path program 1 times [2024-11-28 05:13:11,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:13:11,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544699501] [2024-11-28 05:13:11,844 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:13:11,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:13:11,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:13:11,932 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 05:13:11,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:13:11,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544699501] [2024-11-28 05:13:11,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544699501] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:13:11,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2063043253] [2024-11-28 05:13:11,933 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:13:11,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:13:11,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:13:11,935 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:13:11,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 05:13:12,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:13:12,084 INFO L256 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 05:13:12,086 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:13:12,163 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 05:13:12,163 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:13:12,255 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 05:13:12,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2063043253] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:13:12,255 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:13:12,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2024-11-28 05:13:12,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206009762] [2024-11-28 05:13:12,256 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:13:12,256 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 05:13:12,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:13:12,257 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 05:13:12,257 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-28 05:13:12,257 INFO L87 Difference]: Start difference. First operand 299 states and 370 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 05:13:12,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:13:12,327 INFO L93 Difference]: Finished difference Result 1073 states and 1329 transitions. [2024-11-28 05:13:12,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 05:13:12,328 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 51 [2024-11-28 05:13:12,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:13:12,331 INFO L225 Difference]: With dead ends: 1073 [2024-11-28 05:13:12,331 INFO L226 Difference]: Without dead ends: 1073 [2024-11-28 05:13:12,332 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 99 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2024-11-28 05:13:12,332 INFO L435 NwaCegarLoop]: 315 mSDtfsCounter, 394 mSDsluCounter, 988 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 398 SdHoareTripleChecker+Valid, 1303 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 05:13:12,332 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [398 Valid, 1303 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 05:13:12,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1073 states. [2024-11-28 05:13:12,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1073 to 704. [2024-11-28 05:13:12,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 704 states, 642 states have (on average 1.4299065420560748) internal successors, (918), 683 states have internal predecessors, (918), 17 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-28 05:13:12,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 704 states to 704 states and 952 transitions. [2024-11-28 05:13:12,353 INFO L78 Accepts]: Start accepts. Automaton has 704 states and 952 transitions. Word has length 51 [2024-11-28 05:13:12,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:13:12,353 INFO L471 AbstractCegarLoop]: Abstraction has 704 states and 952 transitions. [2024-11-28 05:13:12,353 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 05:13:12,353 INFO L276 IsEmpty]: Start isEmpty. Operand 704 states and 952 transitions. [2024-11-28 05:13:12,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-28 05:13:12,354 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:13:12,354 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:13:12,365 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 05:13:12,558 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:13:12,559 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr60REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2024-11-28 05:13:12,559 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:13:12,559 INFO L85 PathProgramCache]: Analyzing trace with hash 650290626, now seen corresponding path program 1 times [2024-11-28 05:13:12,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:13:12,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375756868] [2024-11-28 05:13:12,560 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:13:12,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:13:12,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:13:12,891 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 05:13:12,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:13:12,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375756868] [2024-11-28 05:13:12,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375756868] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:13:12,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1492004462] [2024-11-28 05:13:12,892 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:13:12,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:13:12,892 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:13:12,894 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:13:12,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 05:13:13,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:13:13,052 INFO L256 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-28 05:13:13,056 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:13:13,445 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:13:13,445 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:13:13,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1492004462] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:13:13,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 05:13:13,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 12 [2024-11-28 05:13:13,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259283641] [2024-11-28 05:13:13,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:13:13,446 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 05:13:13,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:13:13,447 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 05:13:13,447 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-11-28 05:13:13,448 INFO L87 Difference]: Start difference. First operand 704 states and 952 transitions. Second operand has 6 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:13:13,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:13:13,632 INFO L93 Difference]: Finished difference Result 712 states and 960 transitions. [2024-11-28 05:13:13,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 05:13:13,632 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 51 [2024-11-28 05:13:13,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:13:13,635 INFO L225 Difference]: With dead ends: 712 [2024-11-28 05:13:13,635 INFO L226 Difference]: Without dead ends: 712 [2024-11-28 05:13:13,635 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2024-11-28 05:13:13,635 INFO L435 NwaCegarLoop]: 112 mSDtfsCounter, 179 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 05:13:13,636 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 290 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 05:13:13,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 712 states. [2024-11-28 05:13:13,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 712 to 706. [2024-11-28 05:13:13,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 706 states, 644 states have (on average 1.4301242236024845) internal successors, (921), 685 states have internal predecessors, (921), 17 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-28 05:13:13,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 955 transitions. [2024-11-28 05:13:13,658 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 955 transitions. Word has length 51 [2024-11-28 05:13:13,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:13:13,659 INFO L471 AbstractCegarLoop]: Abstraction has 706 states and 955 transitions. [2024-11-28 05:13:13,659 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:13:13,659 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 955 transitions. [2024-11-28 05:13:13,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-28 05:13:13,660 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:13:13,660 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:13:13,670 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-28 05:13:13,864 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:13:13,864 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr60REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2024-11-28 05:13:13,865 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:13:13,865 INFO L85 PathProgramCache]: Analyzing trace with hash 650290688, now seen corresponding path program 1 times [2024-11-28 05:13:13,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:13:13,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138425401] [2024-11-28 05:13:13,865 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:13:13,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:13:13,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:13:14,051 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:13:14,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:13:14,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138425401] [2024-11-28 05:13:14,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138425401] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:13:14,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:13:14,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 05:13:14,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925473012] [2024-11-28 05:13:14,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:13:14,052 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 05:13:14,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:13:14,053 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 05:13:14,053 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:13:14,053 INFO L87 Difference]: Start difference. First operand 706 states and 955 transitions. Second operand has 6 states, 5 states have (on average 9.8) internal successors, (49), 6 states have internal predecessors, (49), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:13:14,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:13:14,217 INFO L93 Difference]: Finished difference Result 710 states and 956 transitions. [2024-11-28 05:13:14,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 05:13:14,217 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.8) internal successors, (49), 6 states have internal predecessors, (49), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 51 [2024-11-28 05:13:14,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:13:14,219 INFO L225 Difference]: With dead ends: 710 [2024-11-28 05:13:14,219 INFO L226 Difference]: Without dead ends: 710 [2024-11-28 05:13:14,220 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-28 05:13:14,220 INFO L435 NwaCegarLoop]: 112 mSDtfsCounter, 238 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 05:13:14,221 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 290 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 05:13:14,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 710 states. [2024-11-28 05:13:14,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 710 to 702. [2024-11-28 05:13:14,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 702 states, 642 states have (on average 1.4236760124610592) internal successors, (914), 681 states have internal predecessors, (914), 17 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-28 05:13:14,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 948 transitions. [2024-11-28 05:13:14,239 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 948 transitions. Word has length 51 [2024-11-28 05:13:14,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:13:14,240 INFO L471 AbstractCegarLoop]: Abstraction has 702 states and 948 transitions. [2024-11-28 05:13:14,240 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.8) internal successors, (49), 6 states have internal predecessors, (49), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:13:14,241 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 948 transitions. [2024-11-28 05:13:14,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-28 05:13:14,242 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:13:14,242 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:13:14,242 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-28 05:13:14,242 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2024-11-28 05:13:14,243 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:13:14,243 INFO L85 PathProgramCache]: Analyzing trace with hash 909576006, now seen corresponding path program 1 times [2024-11-28 05:13:14,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:13:14,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232875765] [2024-11-28 05:13:14,243 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:13:14,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:13:14,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:13:15,737 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 05:13:15,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:13:15,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232875765] [2024-11-28 05:13:15,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232875765] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:13:15,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [750575887] [2024-11-28 05:13:15,738 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:13:15,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:13:15,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:13:15,740 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:13:15,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 05:13:15,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:13:15,913 INFO L256 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 61 conjuncts are in the unsatisfiable core [2024-11-28 05:13:15,922 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:13:16,056 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-28 05:13:16,058 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 11 [2024-11-28 05:13:16,303 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 11 treesize of output 7 [2024-11-28 05:13:16,314 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 11 treesize of output 7 [2024-11-28 05:13:16,390 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2024-11-28 05:13:16,405 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2024-11-28 05:13:16,499 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-28 05:13:16,509 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-28 05:13:16,696 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:13:16,696 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:13:16,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [750575887] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:13:16,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 05:13:16,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [13] total 23 [2024-11-28 05:13:16,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815327270] [2024-11-28 05:13:16,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:13:16,697 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 05:13:16,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:13:16,698 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 05:13:16,698 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=446, Unknown=0, NotChecked=0, Total=506 [2024-11-28 05:13:16,698 INFO L87 Difference]: Start difference. First operand 702 states and 948 transitions. Second operand has 12 states, 12 states have (on average 4.25) internal successors, (51), 11 states have internal predecessors, (51), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 05:13:17,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:13:17,621 INFO L93 Difference]: Finished difference Result 824 states and 1089 transitions. [2024-11-28 05:13:17,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 05:13:17,622 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.25) internal successors, (51), 11 states have internal predecessors, (51), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 55 [2024-11-28 05:13:17,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:13:17,625 INFO L225 Difference]: With dead ends: 824 [2024-11-28 05:13:17,626 INFO L226 Difference]: Without dead ends: 824 [2024-11-28 05:13:17,627 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=110, Invalid=882, Unknown=0, NotChecked=0, Total=992 [2024-11-28 05:13:17,627 INFO L435 NwaCegarLoop]: 110 mSDtfsCounter, 202 mSDsluCounter, 905 mSDsCounter, 0 mSdLazyCounter, 587 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 1015 SdHoareTripleChecker+Invalid, 588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 05:13:17,628 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 1015 Invalid, 588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 587 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 05:13:17,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 824 states. [2024-11-28 05:13:17,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 824 to 717. [2024-11-28 05:13:17,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 717 states, 657 states have (on average 1.4140030441400304) internal successors, (929), 696 states have internal predecessors, (929), 17 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-28 05:13:17,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 717 states to 717 states and 963 transitions. [2024-11-28 05:13:17,650 INFO L78 Accepts]: Start accepts. Automaton has 717 states and 963 transitions. Word has length 55 [2024-11-28 05:13:17,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:13:17,650 INFO L471 AbstractCegarLoop]: Abstraction has 717 states and 963 transitions. [2024-11-28 05:13:17,650 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.25) internal successors, (51), 11 states have internal predecessors, (51), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 05:13:17,651 INFO L276 IsEmpty]: Start isEmpty. Operand 717 states and 963 transitions. [2024-11-28 05:13:17,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-28 05:13:17,655 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:13:17,655 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:13:17,666 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 05:13:17,856 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:13:17,856 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2024-11-28 05:13:17,857 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:13:17,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1047140610, now seen corresponding path program 1 times [2024-11-28 05:13:17,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:13:17,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999511073] [2024-11-28 05:13:17,857 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:13:17,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:13:17,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:13:18,681 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 05:13:18,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:13:18,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999511073] [2024-11-28 05:13:18,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999511073] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:13:18,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [352857168] [2024-11-28 05:13:18,682 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:13:18,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:13:18,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:13:18,686 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:13:18,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 05:13:18,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:13:18,898 INFO L256 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 63 conjuncts are in the unsatisfiable core [2024-11-28 05:13:18,907 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:13:18,965 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 6 treesize of output 5 [2024-11-28 05:13:19,332 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 05:13:19,518 INFO L349 Elim1Store]: treesize reduction 32, result has 36.0 percent of original size [2024-11-28 05:13:19,518 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 24 [2024-11-28 05:13:19,590 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 17 treesize of output 9 [2024-11-28 05:13:19,593 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:13:19,593 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:13:19,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [352857168] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:13:19,795 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 05:13:19,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10] total 23 [2024-11-28 05:13:19,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302849223] [2024-11-28 05:13:19,796 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 05:13:19,796 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-28 05:13:19,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:13:19,797 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-28 05:13:19,798 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=615, Unknown=0, NotChecked=0, Total=702 [2024-11-28 05:13:19,798 INFO L87 Difference]: Start difference. First operand 717 states and 963 transitions. Second operand has 24 states, 23 states have (on average 4.478260869565218) internal successors, (103), 22 states have internal predecessors, (103), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-28 05:13:21,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:13:21,400 INFO L93 Difference]: Finished difference Result 1140 states and 1544 transitions. [2024-11-28 05:13:21,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-28 05:13:21,401 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 4.478260869565218) internal successors, (103), 22 states have internal predecessors, (103), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 56 [2024-11-28 05:13:21,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:13:21,405 INFO L225 Difference]: With dead ends: 1140 [2024-11-28 05:13:21,406 INFO L226 Difference]: Without dead ends: 1140 [2024-11-28 05:13:21,407 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 316 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=229, Invalid=1331, Unknown=0, NotChecked=0, Total=1560 [2024-11-28 05:13:21,409 INFO L435 NwaCegarLoop]: 151 mSDtfsCounter, 708 mSDsluCounter, 2121 mSDsCounter, 0 mSdLazyCounter, 1334 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 708 SdHoareTripleChecker+Valid, 2272 SdHoareTripleChecker+Invalid, 1350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-28 05:13:21,409 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [708 Valid, 2272 Invalid, 1350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1334 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-28 05:13:21,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1140 states. [2024-11-28 05:13:21,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1140 to 906. [2024-11-28 05:13:21,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 906 states, 834 states have (on average 1.4040767386091126) internal successors, (1171), 873 states have internal predecessors, (1171), 27 states have call successors, (27), 5 states have call predecessors, (27), 5 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2024-11-28 05:13:21,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 906 states to 906 states and 1225 transitions. [2024-11-28 05:13:21,442 INFO L78 Accepts]: Start accepts. Automaton has 906 states and 1225 transitions. Word has length 56 [2024-11-28 05:13:21,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:13:21,442 INFO L471 AbstractCegarLoop]: Abstraction has 906 states and 1225 transitions. [2024-11-28 05:13:21,442 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 4.478260869565218) internal successors, (103), 22 states have internal predecessors, (103), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-28 05:13:21,443 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states and 1225 transitions. [2024-11-28 05:13:21,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-28 05:13:21,447 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:13:21,447 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:13:21,460 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-28 05:13:21,648 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:13:21,648 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2024-11-28 05:13:21,648 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:13:21,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1047140611, now seen corresponding path program 1 times [2024-11-28 05:13:21,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:13:21,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812783189] [2024-11-28 05:13:21,649 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:13:21,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:13:21,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:13:22,676 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 05:13:22,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:13:22,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812783189] [2024-11-28 05:13:22,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812783189] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:13:22,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1676722504] [2024-11-28 05:13:22,677 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:13:22,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:13:22,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:13:22,679 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:13:22,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 05:13:22,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:13:22,868 INFO L256 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 72 conjuncts are in the unsatisfiable core [2024-11-28 05:13:22,873 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:13:22,928 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 05:13:23,365 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 05:13:23,373 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 05:13:23,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:13:23,625 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-28 05:13:23,634 INFO L349 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2024-11-28 05:13:23,635 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 15 treesize of output 15 [2024-11-28 05:13:23,779 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 17 treesize of output 9 [2024-11-28 05:13:23,814 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:13:23,814 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:13:24,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1676722504] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:13:24,177 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 05:13:24,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12] total 27 [2024-11-28 05:13:24,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793155112] [2024-11-28 05:13:24,177 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 05:13:24,177 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-28 05:13:24,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:13:24,178 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-28 05:13:24,178 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=947, Unknown=0, NotChecked=0, Total=1056 [2024-11-28 05:13:24,179 INFO L87 Difference]: Start difference. First operand 906 states and 1225 transitions. Second operand has 28 states, 27 states have (on average 3.8518518518518516) internal successors, (104), 26 states have internal predecessors, (104), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-28 05:13:26,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:13:26,405 INFO L93 Difference]: Finished difference Result 1171 states and 1584 transitions. [2024-11-28 05:13:26,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-28 05:13:26,406 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 3.8518518518518516) internal successors, (104), 26 states have internal predecessors, (104), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 56 [2024-11-28 05:13:26,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:13:26,410 INFO L225 Difference]: With dead ends: 1171 [2024-11-28 05:13:26,410 INFO L226 Difference]: Without dead ends: 1171 [2024-11-28 05:13:26,411 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 489 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=299, Invalid=1957, Unknown=0, NotChecked=0, Total=2256 [2024-11-28 05:13:26,412 INFO L435 NwaCegarLoop]: 137 mSDtfsCounter, 658 mSDsluCounter, 2160 mSDsCounter, 0 mSdLazyCounter, 1769 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 658 SdHoareTripleChecker+Valid, 2297 SdHoareTripleChecker+Invalid, 1787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1769 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-28 05:13:26,412 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [658 Valid, 2297 Invalid, 1787 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1769 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-28 05:13:26,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1171 states. [2024-11-28 05:13:26,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1171 to 906. [2024-11-28 05:13:26,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 906 states, 834 states have (on average 1.3980815347721822) internal successors, (1166), 873 states have internal predecessors, (1166), 27 states have call successors, (27), 5 states have call predecessors, (27), 5 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2024-11-28 05:13:26,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 906 states to 906 states and 1220 transitions. [2024-11-28 05:13:26,457 INFO L78 Accepts]: Start accepts. Automaton has 906 states and 1220 transitions. Word has length 56 [2024-11-28 05:13:26,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:13:26,457 INFO L471 AbstractCegarLoop]: Abstraction has 906 states and 1220 transitions. [2024-11-28 05:13:26,458 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 3.8518518518518516) internal successors, (104), 26 states have internal predecessors, (104), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-28 05:13:26,458 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states and 1220 transitions. [2024-11-28 05:13:26,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-28 05:13:26,459 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:13:26,459 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:13:26,470 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-28 05:13:26,659 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:13:26,660 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2024-11-28 05:13:26,660 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:13:26,661 INFO L85 PathProgramCache]: Analyzing trace with hash -1646220598, now seen corresponding path program 1 times [2024-11-28 05:13:26,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:13:26,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311753751] [2024-11-28 05:13:26,661 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:13:26,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:13:26,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:13:28,223 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:13:28,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:13:28,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311753751] [2024-11-28 05:13:28,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311753751] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:13:28,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:13:28,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-28 05:13:28,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162213366] [2024-11-28 05:13:28,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:13:28,224 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-28 05:13:28,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:13:28,225 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-28 05:13:28,226 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2024-11-28 05:13:28,227 INFO L87 Difference]: Start difference. First operand 906 states and 1220 transitions. Second operand has 16 states, 16 states have (on average 3.3125) internal successors, (53), 14 states have internal predecessors, (53), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:13:29,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:13:29,084 INFO L93 Difference]: Finished difference Result 963 states and 1277 transitions. [2024-11-28 05:13:29,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-28 05:13:29,084 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.3125) internal successors, (53), 14 states have internal predecessors, (53), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 55 [2024-11-28 05:13:29,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:13:29,086 INFO L225 Difference]: With dead ends: 963 [2024-11-28 05:13:29,087 INFO L226 Difference]: Without dead ends: 963 [2024-11-28 05:13:29,087 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=106, Invalid=544, Unknown=0, NotChecked=0, Total=650 [2024-11-28 05:13:29,088 INFO L435 NwaCegarLoop]: 138 mSDtfsCounter, 60 mSDsluCounter, 1179 mSDsCounter, 0 mSdLazyCounter, 484 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 1317 SdHoareTripleChecker+Invalid, 497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 05:13:29,088 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 1317 Invalid, 497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 484 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 05:13:29,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2024-11-28 05:13:29,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 960. [2024-11-28 05:13:29,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 960 states, 888 states have (on average 1.3738738738738738) internal successors, (1220), 927 states have internal predecessors, (1220), 27 states have call successors, (27), 5 states have call predecessors, (27), 5 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2024-11-28 05:13:29,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 960 states to 960 states and 1274 transitions. [2024-11-28 05:13:29,116 INFO L78 Accepts]: Start accepts. Automaton has 960 states and 1274 transitions. Word has length 55 [2024-11-28 05:13:29,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:13:29,116 INFO L471 AbstractCegarLoop]: Abstraction has 960 states and 1274 transitions. [2024-11-28 05:13:29,116 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.3125) internal successors, (53), 14 states have internal predecessors, (53), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:13:29,118 INFO L276 IsEmpty]: Start isEmpty. Operand 960 states and 1274 transitions. [2024-11-28 05:13:29,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-28 05:13:29,119 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:13:29,119 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:13:29,119 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-11-28 05:13:29,120 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2024-11-28 05:13:29,120 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:13:29,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1156050574, now seen corresponding path program 1 times [2024-11-28 05:13:29,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:13:29,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845771138] [2024-11-28 05:13:29,121 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:13:29,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:13:29,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:13:30,021 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:13:30,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:13:30,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845771138] [2024-11-28 05:13:30,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845771138] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:13:30,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:13:30,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-28 05:13:30,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447388939] [2024-11-28 05:13:30,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:13:30,023 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-28 05:13:30,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:13:30,023 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-28 05:13:30,024 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2024-11-28 05:13:30,024 INFO L87 Difference]: Start difference. First operand 960 states and 1274 transitions. Second operand has 17 states, 16 states have (on average 3.375) internal successors, (54), 15 states have internal predecessors, (54), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:13:30,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:13:30,757 INFO L93 Difference]: Finished difference Result 1673 states and 2251 transitions. [2024-11-28 05:13:30,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-28 05:13:30,758 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 3.375) internal successors, (54), 15 states have internal predecessors, (54), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 56 [2024-11-28 05:13:30,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:13:30,761 INFO L225 Difference]: With dead ends: 1673 [2024-11-28 05:13:30,761 INFO L226 Difference]: Without dead ends: 1673 [2024-11-28 05:13:30,761 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=92, Invalid=460, Unknown=0, NotChecked=0, Total=552 [2024-11-28 05:13:30,762 INFO L435 NwaCegarLoop]: 151 mSDtfsCounter, 380 mSDsluCounter, 1315 mSDsCounter, 0 mSdLazyCounter, 891 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 383 SdHoareTripleChecker+Valid, 1466 SdHoareTripleChecker+Invalid, 899 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 891 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 05:13:30,762 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [383 Valid, 1466 Invalid, 899 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 891 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 05:13:30,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1673 states. [2024-11-28 05:13:30,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1673 to 1331. [2024-11-28 05:13:30,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1331 states, 1236 states have (on average 1.3810679611650485) internal successors, (1707), 1284 states have internal predecessors, (1707), 47 states have call successors, (47), 9 states have call predecessors, (47), 9 states have return successors, (47), 37 states have call predecessors, (47), 47 states have call successors, (47) [2024-11-28 05:13:30,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1331 states to 1331 states and 1801 transitions. [2024-11-28 05:13:30,794 INFO L78 Accepts]: Start accepts. Automaton has 1331 states and 1801 transitions. Word has length 56 [2024-11-28 05:13:30,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:13:30,795 INFO L471 AbstractCegarLoop]: Abstraction has 1331 states and 1801 transitions. [2024-11-28 05:13:30,795 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 3.375) internal successors, (54), 15 states have internal predecessors, (54), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:13:30,795 INFO L276 IsEmpty]: Start isEmpty. Operand 1331 states and 1801 transitions. [2024-11-28 05:13:30,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-28 05:13:30,796 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:13:30,796 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:13:30,796 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-11-28 05:13:30,796 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr62REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2024-11-28 05:13:30,797 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:13:30,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1156050575, now seen corresponding path program 1 times [2024-11-28 05:13:30,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:13:30,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822174708] [2024-11-28 05:13:30,797 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:13:30,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:13:30,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:13:32,035 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:13:32,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:13:32,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822174708] [2024-11-28 05:13:32,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822174708] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:13:32,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:13:32,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-28 05:13:32,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702408572] [2024-11-28 05:13:32,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:13:32,036 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-28 05:13:32,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:13:32,037 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-28 05:13:32,037 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2024-11-28 05:13:32,037 INFO L87 Difference]: Start difference. First operand 1331 states and 1801 transitions. Second operand has 17 states, 16 states have (on average 3.375) internal successors, (54), 15 states have internal predecessors, (54), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:13:33,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:13:33,156 INFO L93 Difference]: Finished difference Result 1775 states and 2400 transitions. [2024-11-28 05:13:33,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-28 05:13:33,156 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 3.375) internal successors, (54), 15 states have internal predecessors, (54), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 56 [2024-11-28 05:13:33,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:13:33,160 INFO L225 Difference]: With dead ends: 1775 [2024-11-28 05:13:33,160 INFO L226 Difference]: Without dead ends: 1775 [2024-11-28 05:13:33,160 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=111, Invalid=645, Unknown=0, NotChecked=0, Total=756 [2024-11-28 05:13:33,161 INFO L435 NwaCegarLoop]: 145 mSDtfsCounter, 316 mSDsluCounter, 1653 mSDsCounter, 0 mSdLazyCounter, 1113 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 319 SdHoareTripleChecker+Valid, 1798 SdHoareTripleChecker+Invalid, 1119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-28 05:13:33,161 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [319 Valid, 1798 Invalid, 1119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1113 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-28 05:13:33,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1775 states. [2024-11-28 05:13:33,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1775 to 1460. [2024-11-28 05:13:33,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1460 states, 1359 states have (on average 1.3980868285504047) internal successors, (1900), 1409 states have internal predecessors, (1900), 52 states have call successors, (52), 10 states have call predecessors, (52), 10 states have return successors, (52), 40 states have call predecessors, (52), 52 states have call successors, (52) [2024-11-28 05:13:33,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1460 states to 1460 states and 2004 transitions. [2024-11-28 05:13:33,191 INFO L78 Accepts]: Start accepts. Automaton has 1460 states and 2004 transitions. Word has length 56 [2024-11-28 05:13:33,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:13:33,191 INFO L471 AbstractCegarLoop]: Abstraction has 1460 states and 2004 transitions. [2024-11-28 05:13:33,192 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 3.375) internal successors, (54), 15 states have internal predecessors, (54), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:13:33,192 INFO L276 IsEmpty]: Start isEmpty. Operand 1460 states and 2004 transitions. [2024-11-28 05:13:33,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-28 05:13:33,193 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:13:33,193 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:13:33,193 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-11-28 05:13:33,193 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2024-11-28 05:13:33,194 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:13:33,194 INFO L85 PathProgramCache]: Analyzing trace with hash 1157897616, now seen corresponding path program 1 times [2024-11-28 05:13:33,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:13:33,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995540598] [2024-11-28 05:13:33,194 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:13:33,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:13:33,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:13:33,555 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:13:33,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:13:33,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995540598] [2024-11-28 05:13:33,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995540598] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:13:33,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:13:33,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-28 05:13:33,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848549026] [2024-11-28 05:13:33,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:13:33,557 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 05:13:33,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:13:33,557 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 05:13:33,557 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-28 05:13:33,558 INFO L87 Difference]: Start difference. First operand 1460 states and 2004 transitions. Second operand has 11 states, 10 states have (on average 5.4) internal successors, (54), 11 states have internal predecessors, (54), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:13:34,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:13:34,100 INFO L93 Difference]: Finished difference Result 2325 states and 3215 transitions. [2024-11-28 05:13:34,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 05:13:34,101 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 5.4) internal successors, (54), 11 states have internal predecessors, (54), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 56 [2024-11-28 05:13:34,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:13:34,110 INFO L225 Difference]: With dead ends: 2325 [2024-11-28 05:13:34,110 INFO L226 Difference]: Without dead ends: 2325 [2024-11-28 05:13:34,110 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2024-11-28 05:13:34,111 INFO L435 NwaCegarLoop]: 157 mSDtfsCounter, 163 mSDsluCounter, 1016 mSDsCounter, 0 mSdLazyCounter, 627 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 1173 SdHoareTripleChecker+Invalid, 631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 05:13:34,111 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 1173 Invalid, 631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 627 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 05:13:34,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2325 states. [2024-11-28 05:13:34,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2325 to 1969. [2024-11-28 05:13:34,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1969 states, 1820 states have (on average 1.3934065934065933) internal successors, (2536), 1890 states have internal predecessors, (2536), 92 states have call successors, (92), 18 states have call predecessors, (92), 18 states have return successors, (92), 60 states have call predecessors, (92), 92 states have call successors, (92) [2024-11-28 05:13:34,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1969 states to 1969 states and 2720 transitions. [2024-11-28 05:13:34,167 INFO L78 Accepts]: Start accepts. Automaton has 1969 states and 2720 transitions. Word has length 56 [2024-11-28 05:13:34,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:13:34,167 INFO L471 AbstractCegarLoop]: Abstraction has 1969 states and 2720 transitions. [2024-11-28 05:13:34,168 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 5.4) internal successors, (54), 11 states have internal predecessors, (54), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:13:34,168 INFO L276 IsEmpty]: Start isEmpty. Operand 1969 states and 2720 transitions. [2024-11-28 05:13:34,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-28 05:13:34,169 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:13:34,169 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:13:34,169 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-11-28 05:13:34,169 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr62REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2024-11-28 05:13:34,170 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:13:34,170 INFO L85 PathProgramCache]: Analyzing trace with hash 1157897617, now seen corresponding path program 1 times [2024-11-28 05:13:34,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:13:34,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198505137] [2024-11-28 05:13:34,170 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:13:34,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:13:34,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:13:34,727 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:13:34,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:13:34,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198505137] [2024-11-28 05:13:34,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198505137] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:13:34,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:13:34,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 05:13:34,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974308859] [2024-11-28 05:13:34,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:13:34,729 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 05:13:34,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:13:34,730 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 05:13:34,730 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-28 05:13:34,730 INFO L87 Difference]: Start difference. First operand 1969 states and 2720 transitions. Second operand has 10 states, 9 states have (on average 6.0) internal successors, (54), 10 states have internal predecessors, (54), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:13:35,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:13:35,378 INFO L93 Difference]: Finished difference Result 2524 states and 3512 transitions. [2024-11-28 05:13:35,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 05:13:35,379 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.0) internal successors, (54), 10 states have internal predecessors, (54), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 56 [2024-11-28 05:13:35,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:13:35,387 INFO L225 Difference]: With dead ends: 2524 [2024-11-28 05:13:35,387 INFO L226 Difference]: Without dead ends: 2524 [2024-11-28 05:13:35,387 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-11-28 05:13:35,388 INFO L435 NwaCegarLoop]: 154 mSDtfsCounter, 154 mSDsluCounter, 1041 mSDsCounter, 0 mSdLazyCounter, 609 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 1195 SdHoareTripleChecker+Invalid, 611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 05:13:35,388 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 1195 Invalid, 611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 609 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 05:13:35,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2524 states. [2024-11-28 05:13:35,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2524 to 2210. [2024-11-28 05:13:35,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2210 states, 2049 states have (on average 1.4143484626647145) internal successors, (2898), 2123 states have internal predecessors, (2898), 102 states have call successors, (102), 20 states have call predecessors, (102), 20 states have return successors, (102), 66 states have call predecessors, (102), 102 states have call successors, (102) [2024-11-28 05:13:35,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2210 states to 2210 states and 3102 transitions. [2024-11-28 05:13:35,430 INFO L78 Accepts]: Start accepts. Automaton has 2210 states and 3102 transitions. Word has length 56 [2024-11-28 05:13:35,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:13:35,430 INFO L471 AbstractCegarLoop]: Abstraction has 2210 states and 3102 transitions. [2024-11-28 05:13:35,430 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.0) internal successors, (54), 10 states have internal predecessors, (54), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:13:35,431 INFO L276 IsEmpty]: Start isEmpty. Operand 2210 states and 3102 transitions. [2024-11-28 05:13:35,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-28 05:13:35,432 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:13:35,432 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:13:35,432 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-11-28 05:13:35,432 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2024-11-28 05:13:35,433 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:13:35,433 INFO L85 PathProgramCache]: Analyzing trace with hash 228989862, now seen corresponding path program 1 times [2024-11-28 05:13:35,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:13:35,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505227825] [2024-11-28 05:13:35,433 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:13:35,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:13:35,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:13:36,141 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 05:13:36,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:13:36,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505227825] [2024-11-28 05:13:36,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505227825] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:13:36,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:13:36,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-28 05:13:36,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672515794] [2024-11-28 05:13:36,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:13:36,142 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-28 05:13:36,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:13:36,142 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-28 05:13:36,142 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2024-11-28 05:13:36,143 INFO L87 Difference]: Start difference. First operand 2210 states and 3102 transitions. Second operand has 15 states, 15 states have (on average 3.466666666666667) internal successors, (52), 15 states have internal predecessors, (52), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 05:13:36,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:13:36,839 INFO L93 Difference]: Finished difference Result 2695 states and 3791 transitions. [2024-11-28 05:13:36,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-28 05:13:36,839 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.466666666666667) internal successors, (52), 15 states have internal predecessors, (52), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 58 [2024-11-28 05:13:36,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:13:36,848 INFO L225 Difference]: With dead ends: 2695 [2024-11-28 05:13:36,848 INFO L226 Difference]: Without dead ends: 2689 [2024-11-28 05:13:36,849 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=96, Invalid=366, Unknown=0, NotChecked=0, Total=462 [2024-11-28 05:13:36,849 INFO L435 NwaCegarLoop]: 161 mSDtfsCounter, 360 mSDsluCounter, 1552 mSDsCounter, 0 mSdLazyCounter, 623 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 1713 SdHoareTripleChecker+Invalid, 623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 05:13:36,849 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [360 Valid, 1713 Invalid, 623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 623 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 05:13:36,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2689 states. [2024-11-28 05:13:36,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2689 to 2410. [2024-11-28 05:13:36,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2410 states, 2237 states have (on average 1.4215467143495752) internal successors, (3180), 2315 states have internal predecessors, (3180), 112 states have call successors, (112), 22 states have call predecessors, (112), 22 states have return successors, (112), 72 states have call predecessors, (112), 112 states have call successors, (112) [2024-11-28 05:13:36,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2410 states to 2410 states and 3404 transitions. [2024-11-28 05:13:36,904 INFO L78 Accepts]: Start accepts. Automaton has 2410 states and 3404 transitions. Word has length 58 [2024-11-28 05:13:36,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:13:36,905 INFO L471 AbstractCegarLoop]: Abstraction has 2410 states and 3404 transitions. [2024-11-28 05:13:36,905 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.466666666666667) internal successors, (52), 15 states have internal predecessors, (52), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 05:13:36,905 INFO L276 IsEmpty]: Start isEmpty. Operand 2410 states and 3404 transitions. [2024-11-28 05:13:36,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-28 05:13:36,906 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:13:36,906 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:13:36,906 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-11-28 05:13:36,907 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr66ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2024-11-28 05:13:36,907 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:13:36,907 INFO L85 PathProgramCache]: Analyzing trace with hash 1477832034, now seen corresponding path program 1 times [2024-11-28 05:13:36,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:13:36,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338865352] [2024-11-28 05:13:36,908 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:13:36,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:13:36,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:13:36,981 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 05:13:36,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:13:36,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338865352] [2024-11-28 05:13:36,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338865352] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:13:36,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1385682713] [2024-11-28 05:13:36,983 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:13:36,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:13:36,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:13:36,985 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:13:36,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 05:13:37,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:13:37,202 INFO L256 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 05:13:37,204 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:13:37,294 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:13:37,294 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:13:37,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1385682713] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:13:37,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 05:13:37,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2024-11-28 05:13:37,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049880976] [2024-11-28 05:13:37,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:13:37,295 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:13:37,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:13:37,295 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:13:37,295 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:13:37,295 INFO L87 Difference]: Start difference. First operand 2410 states and 3404 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:13:37,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:13:37,326 INFO L93 Difference]: Finished difference Result 4089 states and 5797 transitions. [2024-11-28 05:13:37,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:13:37,327 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 57 [2024-11-28 05:13:37,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:13:37,349 INFO L225 Difference]: With dead ends: 4089 [2024-11-28 05:13:37,349 INFO L226 Difference]: Without dead ends: 4089 [2024-11-28 05:13:37,350 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 57 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 05:13:37,350 INFO L435 NwaCegarLoop]: 218 mSDtfsCounter, 233 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 05:13:37,350 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 371 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 05:13:37,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4089 states. [2024-11-28 05:13:37,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4089 to 3594. [2024-11-28 05:13:37,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3594 states, 3381 states have (on average 1.433007985803017) internal successors, (4845), 3459 states have internal predecessors, (4845), 152 states have call successors, (152), 22 states have call predecessors, (152), 22 states have return successors, (152), 112 states have call predecessors, (152), 152 states have call successors, (152) [2024-11-28 05:13:37,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3594 states to 3594 states and 5149 transitions. [2024-11-28 05:13:37,420 INFO L78 Accepts]: Start accepts. Automaton has 3594 states and 5149 transitions. Word has length 57 [2024-11-28 05:13:37,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:13:37,421 INFO L471 AbstractCegarLoop]: Abstraction has 3594 states and 5149 transitions. [2024-11-28 05:13:37,421 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:13:37,421 INFO L276 IsEmpty]: Start isEmpty. Operand 3594 states and 5149 transitions. [2024-11-28 05:13:37,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-28 05:13:37,422 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:13:37,422 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:13:37,434 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-28 05:13:37,623 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-11-28 05:13:37,623 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2024-11-28 05:13:37,623 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:13:37,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1023567186, now seen corresponding path program 1 times [2024-11-28 05:13:37,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:13:37,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660496353] [2024-11-28 05:13:37,624 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:13:37,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:13:37,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:13:37,859 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 05:13:37,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:13:37,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660496353] [2024-11-28 05:13:37,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660496353] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:13:37,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:13:37,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 05:13:37,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259215318] [2024-11-28 05:13:37,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:13:37,861 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 05:13:37,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:13:37,861 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 05:13:37,861 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-28 05:13:37,863 INFO L87 Difference]: Start difference. First operand 3594 states and 5149 transitions. Second operand has 7 states, 6 states have (on average 9.0) internal successors, (54), 7 states have internal predecessors, (54), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 05:13:38,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:13:38,049 INFO L93 Difference]: Finished difference Result 3621 states and 5047 transitions. [2024-11-28 05:13:38,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 05:13:38,050 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 9.0) internal successors, (54), 7 states have internal predecessors, (54), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 60 [2024-11-28 05:13:38,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:13:38,065 INFO L225 Difference]: With dead ends: 3621 [2024-11-28 05:13:38,065 INFO L226 Difference]: Without dead ends: 3621 [2024-11-28 05:13:38,066 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-28 05:13:38,067 INFO L435 NwaCegarLoop]: 130 mSDtfsCounter, 197 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 05:13:38,068 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 340 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 05:13:38,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3621 states. [2024-11-28 05:13:38,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3621 to 3591. [2024-11-28 05:13:38,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3591 states, 3381 states have (on average 1.39396628216504) internal successors, (4713), 3456 states have internal predecessors, (4713), 152 states have call successors, (152), 22 states have call predecessors, (152), 22 states have return successors, (152), 112 states have call predecessors, (152), 152 states have call successors, (152) [2024-11-28 05:13:38,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3591 states to 3591 states and 5017 transitions. [2024-11-28 05:13:38,130 INFO L78 Accepts]: Start accepts. Automaton has 3591 states and 5017 transitions. Word has length 60 [2024-11-28 05:13:38,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:13:38,133 INFO L471 AbstractCegarLoop]: Abstraction has 3591 states and 5017 transitions. [2024-11-28 05:13:38,134 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 9.0) internal successors, (54), 7 states have internal predecessors, (54), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 05:13:38,134 INFO L276 IsEmpty]: Start isEmpty. Operand 3591 states and 5017 transitions. [2024-11-28 05:13:38,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-28 05:13:38,135 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:13:38,135 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:13:38,135 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-11-28 05:13:38,135 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr64ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2024-11-28 05:13:38,135 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:13:38,135 INFO L85 PathProgramCache]: Analyzing trace with hash -1439826430, now seen corresponding path program 1 times [2024-11-28 05:13:38,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:13:38,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255028094] [2024-11-28 05:13:38,135 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:13:38,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:13:38,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:13:38,939 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 05:13:38,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:13:38,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255028094] [2024-11-28 05:13:38,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255028094] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:13:38,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [819575424] [2024-11-28 05:13:38,940 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:13:38,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:13:38,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:13:38,942 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:13:38,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 05:13:39,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:13:39,175 INFO L256 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-28 05:13:39,180 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:13:39,725 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 05:13:39,833 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 22 [2024-11-28 05:13:40,222 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 05:13:40,223 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 12 [2024-11-28 05:13:40,237 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:13:40,238 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:13:40,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [819575424] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:13:40,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 05:13:40,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [13] total 21 [2024-11-28 05:13:40,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61379067] [2024-11-28 05:13:40,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:13:40,239 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 05:13:40,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:13:40,239 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 05:13:40,239 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=397, Unknown=0, NotChecked=0, Total=462 [2024-11-28 05:13:40,240 INFO L87 Difference]: Start difference. First operand 3591 states and 5017 transitions. Second operand has 12 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:13:40,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:13:40,879 INFO L93 Difference]: Finished difference Result 3923 states and 5472 transitions. [2024-11-28 05:13:40,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 05:13:40,879 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 59 [2024-11-28 05:13:40,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:13:40,889 INFO L225 Difference]: With dead ends: 3923 [2024-11-28 05:13:40,890 INFO L226 Difference]: Without dead ends: 3923 [2024-11-28 05:13:40,890 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=88, Invalid=562, Unknown=0, NotChecked=0, Total=650 [2024-11-28 05:13:40,891 INFO L435 NwaCegarLoop]: 122 mSDtfsCounter, 277 mSDsluCounter, 923 mSDsCounter, 0 mSdLazyCounter, 478 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 1045 SdHoareTripleChecker+Invalid, 482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 478 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 05:13:40,891 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [277 Valid, 1045 Invalid, 482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 478 Invalid, 1 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 05:13:40,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3923 states. [2024-11-28 05:13:40,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3923 to 3638. [2024-11-28 05:13:40,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3638 states, 3428 states have (on average 1.394982497082847) internal successors, (4782), 3503 states have internal predecessors, (4782), 152 states have call successors, (152), 22 states have call predecessors, (152), 22 states have return successors, (152), 112 states have call predecessors, (152), 152 states have call successors, (152) [2024-11-28 05:13:40,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3638 states to 3638 states and 5086 transitions. [2024-11-28 05:13:40,973 INFO L78 Accepts]: Start accepts. Automaton has 3638 states and 5086 transitions. Word has length 59 [2024-11-28 05:13:40,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:13:40,973 INFO L471 AbstractCegarLoop]: Abstraction has 3638 states and 5086 transitions. [2024-11-28 05:13:40,974 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:13:40,974 INFO L276 IsEmpty]: Start isEmpty. Operand 3638 states and 5086 transitions. [2024-11-28 05:13:40,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-28 05:13:40,975 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:13:40,975 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:13:40,985 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-28 05:13:41,175 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:13:41,176 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr64ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2024-11-28 05:13:41,176 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:13:41,176 INFO L85 PathProgramCache]: Analyzing trace with hash 2045794240, now seen corresponding path program 1 times [2024-11-28 05:13:41,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:13:41,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762893628] [2024-11-28 05:13:41,177 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:13:41,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:13:41,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:13:41,783 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 05:13:41,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:13:41,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762893628] [2024-11-28 05:13:41,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762893628] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:13:41,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1883219964] [2024-11-28 05:13:41,784 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:13:41,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:13:41,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:13:41,788 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:13:41,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 05:13:42,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:13:42,017 INFO L256 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-28 05:13:42,020 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:13:42,542 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 19 treesize of output 1 [2024-11-28 05:13:42,841 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 05:13:42,842 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2024-11-28 05:13:42,854 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:13:42,854 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:13:42,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1883219964] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:13:42,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 05:13:42,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2024-11-28 05:13:42,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729806963] [2024-11-28 05:13:42,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:13:42,855 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 05:13:42,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:13:42,856 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 05:13:42,856 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2024-11-28 05:13:42,856 INFO L87 Difference]: Start difference. First operand 3638 states and 5086 transitions. Second operand has 12 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:13:43,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:13:43,499 INFO L93 Difference]: Finished difference Result 3923 states and 5473 transitions. [2024-11-28 05:13:43,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 05:13:43,500 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 59 [2024-11-28 05:13:43,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:13:43,512 INFO L225 Difference]: With dead ends: 3923 [2024-11-28 05:13:43,512 INFO L226 Difference]: Without dead ends: 3923 [2024-11-28 05:13:43,512 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=93, Invalid=459, Unknown=0, NotChecked=0, Total=552 [2024-11-28 05:13:43,513 INFO L435 NwaCegarLoop]: 125 mSDtfsCounter, 246 mSDsluCounter, 945 mSDsCounter, 0 mSdLazyCounter, 501 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 1070 SdHoareTripleChecker+Invalid, 504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 05:13:43,513 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 1070 Invalid, 504 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 501 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 05:13:43,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3923 states. [2024-11-28 05:13:43,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3923 to 3638. [2024-11-28 05:13:43,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3638 states, 3428 states have (on average 1.394982497082847) internal successors, (4782), 3503 states have internal predecessors, (4782), 152 states have call successors, (152), 22 states have call predecessors, (152), 22 states have return successors, (152), 112 states have call predecessors, (152), 152 states have call successors, (152) [2024-11-28 05:13:43,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3638 states to 3638 states and 5086 transitions. [2024-11-28 05:13:43,572 INFO L78 Accepts]: Start accepts. Automaton has 3638 states and 5086 transitions. Word has length 59 [2024-11-28 05:13:43,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:13:43,573 INFO L471 AbstractCegarLoop]: Abstraction has 3638 states and 5086 transitions. [2024-11-28 05:13:43,573 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:13:43,573 INFO L276 IsEmpty]: Start isEmpty. Operand 3638 states and 5086 transitions. [2024-11-28 05:13:43,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-28 05:13:43,574 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:13:43,574 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:13:43,586 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-28 05:13:43,778 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2024-11-28 05:13:43,779 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2024-11-28 05:13:43,779 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:13:43,779 INFO L85 PathProgramCache]: Analyzing trace with hash -1473014806, now seen corresponding path program 1 times [2024-11-28 05:13:43,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:13:43,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315204143] [2024-11-28 05:13:43,780 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:13:43,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:13:43,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:13:43,861 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-28 05:13:43,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:13:43,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315204143] [2024-11-28 05:13:43,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315204143] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:13:43,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:13:43,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 05:13:43,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964091303] [2024-11-28 05:13:43,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:13:43,863 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:13:43,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:13:43,863 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:13:43,863 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:13:43,863 INFO L87 Difference]: Start difference. First operand 3638 states and 5086 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:13:43,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:13:43,890 INFO L93 Difference]: Finished difference Result 3844 states and 5355 transitions. [2024-11-28 05:13:43,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:13:43,891 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 63 [2024-11-28 05:13:43,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:13:43,900 INFO L225 Difference]: With dead ends: 3844 [2024-11-28 05:13:43,900 INFO L226 Difference]: Without dead ends: 3844 [2024-11-28 05:13:43,901 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 05:13:43,901 INFO L435 NwaCegarLoop]: 193 mSDtfsCounter, 69 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 501 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 05:13:43,902 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 501 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 05:13:43,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3844 states. [2024-11-28 05:13:43,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3844 to 3650. [2024-11-28 05:13:43,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3650 states, 3440 states have (on average 1.3941860465116278) internal successors, (4796), 3515 states have internal predecessors, (4796), 152 states have call successors, (152), 22 states have call predecessors, (152), 22 states have return successors, (152), 112 states have call predecessors, (152), 152 states have call successors, (152) [2024-11-28 05:13:43,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3650 states to 3650 states and 5100 transitions. [2024-11-28 05:13:43,955 INFO L78 Accepts]: Start accepts. Automaton has 3650 states and 5100 transitions. Word has length 63 [2024-11-28 05:13:43,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:13:43,956 INFO L471 AbstractCegarLoop]: Abstraction has 3650 states and 5100 transitions. [2024-11-28 05:13:43,956 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:13:43,956 INFO L276 IsEmpty]: Start isEmpty. Operand 3650 states and 5100 transitions. [2024-11-28 05:13:43,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-28 05:13:43,957 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:13:43,957 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:13:43,957 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-11-28 05:13:43,957 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2024-11-28 05:13:43,958 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:13:43,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1473014744, now seen corresponding path program 1 times [2024-11-28 05:13:43,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:13:43,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020965589] [2024-11-28 05:13:43,958 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:13:43,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:13:43,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:13:44,050 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-28 05:13:44,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:13:44,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020965589] [2024-11-28 05:13:44,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020965589] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:13:44,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:13:44,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 05:13:44,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826148610] [2024-11-28 05:13:44,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:13:44,051 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 05:13:44,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:13:44,052 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 05:13:44,052 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:13:44,052 INFO L87 Difference]: Start difference. First operand 3650 states and 5100 transitions. Second operand has 6 states, 5 states have (on average 9.4) internal successors, (47), 6 states have internal predecessors, (47), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:13:44,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:13:44,238 INFO L93 Difference]: Finished difference Result 3650 states and 5095 transitions. [2024-11-28 05:13:44,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 05:13:44,238 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.4) internal successors, (47), 6 states have internal predecessors, (47), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 63 [2024-11-28 05:13:44,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:13:44,248 INFO L225 Difference]: With dead ends: 3650 [2024-11-28 05:13:44,248 INFO L226 Difference]: Without dead ends: 3650 [2024-11-28 05:13:44,248 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-28 05:13:44,249 INFO L435 NwaCegarLoop]: 138 mSDtfsCounter, 32 mSDsluCounter, 392 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 530 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 05:13:44,249 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 530 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 05:13:44,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3650 states. [2024-11-28 05:13:44,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3650 to 3650. [2024-11-28 05:13:44,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3650 states, 3440 states have (on average 1.392732558139535) internal successors, (4791), 3515 states have internal predecessors, (4791), 152 states have call successors, (152), 22 states have call predecessors, (152), 22 states have return successors, (152), 112 states have call predecessors, (152), 152 states have call successors, (152) [2024-11-28 05:13:44,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3650 states to 3650 states and 5095 transitions. [2024-11-28 05:13:44,306 INFO L78 Accepts]: Start accepts. Automaton has 3650 states and 5095 transitions. Word has length 63 [2024-11-28 05:13:44,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:13:44,307 INFO L471 AbstractCegarLoop]: Abstraction has 3650 states and 5095 transitions. [2024-11-28 05:13:44,307 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.4) internal successors, (47), 6 states have internal predecessors, (47), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:13:44,307 INFO L276 IsEmpty]: Start isEmpty. Operand 3650 states and 5095 transitions. [2024-11-28 05:13:44,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-28 05:13:44,308 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:13:44,308 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:13:44,309 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-11-28 05:13:44,309 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2024-11-28 05:13:44,309 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:13:44,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1473014743, now seen corresponding path program 1 times [2024-11-28 05:13:44,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:13:44,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443237496] [2024-11-28 05:13:44,310 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:13:44,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:13:44,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:13:44,516 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-28 05:13:44,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:13:44,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443237496] [2024-11-28 05:13:44,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443237496] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:13:44,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:13:44,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 05:13:44,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210268981] [2024-11-28 05:13:44,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:13:44,518 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 05:13:44,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:13:44,518 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 05:13:44,518 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:13:44,519 INFO L87 Difference]: Start difference. First operand 3650 states and 5095 transitions. Second operand has 6 states, 5 states have (on average 9.4) internal successors, (47), 6 states have internal predecessors, (47), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:13:44,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:13:44,781 INFO L93 Difference]: Finished difference Result 3646 states and 5053 transitions. [2024-11-28 05:13:44,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 05:13:44,782 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.4) internal successors, (47), 6 states have internal predecessors, (47), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 63 [2024-11-28 05:13:44,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:13:44,793 INFO L225 Difference]: With dead ends: 3646 [2024-11-28 05:13:44,793 INFO L226 Difference]: Without dead ends: 3646 [2024-11-28 05:13:44,796 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-28 05:13:44,796 INFO L435 NwaCegarLoop]: 139 mSDtfsCounter, 32 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 555 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 05:13:44,797 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 555 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 05:13:44,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3646 states. [2024-11-28 05:13:44,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3646 to 3646. [2024-11-28 05:13:44,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3646 states, 3440 states have (on average 1.3805232558139535) internal successors, (4749), 3511 states have internal predecessors, (4749), 152 states have call successors, (152), 22 states have call predecessors, (152), 22 states have return successors, (152), 112 states have call predecessors, (152), 152 states have call successors, (152) [2024-11-28 05:13:44,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3646 states to 3646 states and 5053 transitions. [2024-11-28 05:13:44,881 INFO L78 Accepts]: Start accepts. Automaton has 3646 states and 5053 transitions. Word has length 63 [2024-11-28 05:13:44,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:13:44,882 INFO L471 AbstractCegarLoop]: Abstraction has 3646 states and 5053 transitions. [2024-11-28 05:13:44,882 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.4) internal successors, (47), 6 states have internal predecessors, (47), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:13:44,882 INFO L276 IsEmpty]: Start isEmpty. Operand 3646 states and 5053 transitions. [2024-11-28 05:13:44,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-28 05:13:44,883 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:13:44,883 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:13:44,884 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-11-28 05:13:44,884 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr49REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2024-11-28 05:13:44,884 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:13:44,885 INFO L85 PathProgramCache]: Analyzing trace with hash -1177608662, now seen corresponding path program 1 times [2024-11-28 05:13:44,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:13:44,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104125740] [2024-11-28 05:13:44,885 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:13:44,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:13:44,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:13:45,033 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 05:13:45,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:13:45,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104125740] [2024-11-28 05:13:45,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104125740] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:13:45,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:13:45,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 05:13:45,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733640628] [2024-11-28 05:13:45,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:13:45,036 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 05:13:45,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:13:45,036 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 05:13:45,037 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-28 05:13:45,037 INFO L87 Difference]: Start difference. First operand 3646 states and 5053 transitions. Second operand has 7 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 05:13:45,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:13:45,157 INFO L93 Difference]: Finished difference Result 3650 states and 5047 transitions. [2024-11-28 05:13:45,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 05:13:45,157 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 63 [2024-11-28 05:13:45,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:13:45,168 INFO L225 Difference]: With dead ends: 3650 [2024-11-28 05:13:45,168 INFO L226 Difference]: Without dead ends: 3650 [2024-11-28 05:13:45,168 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-28 05:13:45,169 INFO L435 NwaCegarLoop]: 139 mSDtfsCounter, 32 mSDsluCounter, 497 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 636 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 05:13:45,169 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 636 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 05:13:45,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3650 states. [2024-11-28 05:13:45,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3650 to 3644. [2024-11-28 05:13:45,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3644 states, 3440 states have (on average 1.3770348837209303) internal successors, (4737), 3509 states have internal predecessors, (4737), 152 states have call successors, (152), 22 states have call predecessors, (152), 22 states have return successors, (152), 112 states have call predecessors, (152), 152 states have call successors, (152) [2024-11-28 05:13:45,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3644 states to 3644 states and 5041 transitions. [2024-11-28 05:13:45,228 INFO L78 Accepts]: Start accepts. Automaton has 3644 states and 5041 transitions. Word has length 63 [2024-11-28 05:13:45,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:13:45,228 INFO L471 AbstractCegarLoop]: Abstraction has 3644 states and 5041 transitions. [2024-11-28 05:13:45,229 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 05:13:45,229 INFO L276 IsEmpty]: Start isEmpty. Operand 3644 states and 5041 transitions. [2024-11-28 05:13:45,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-28 05:13:45,230 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:13:45,230 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:13:45,230 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-11-28 05:13:45,232 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2024-11-28 05:13:45,232 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:13:45,232 INFO L85 PathProgramCache]: Analyzing trace with hash -30455754, now seen corresponding path program 1 times [2024-11-28 05:13:45,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:13:45,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158711325] [2024-11-28 05:13:45,233 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:13:45,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:13:45,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:13:45,321 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:13:45,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:13:45,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158711325] [2024-11-28 05:13:45,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158711325] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:13:45,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1006009817] [2024-11-28 05:13:45,322 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:13:45,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:13:45,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:13:45,324 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:13:45,329 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 05:13:45,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:13:45,555 INFO L256 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 05:13:45,556 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:13:45,625 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:13:45,625 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:13:45,708 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:13:45,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1006009817] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:13:45,708 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:13:45,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 5 [2024-11-28 05:13:45,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729375005] [2024-11-28 05:13:45,708 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:13:45,708 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 05:13:45,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:13:45,709 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 05:13:45,709 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:13:45,709 INFO L87 Difference]: Start difference. First operand 3644 states and 5041 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 05:13:45,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:13:45,763 INFO L93 Difference]: Finished difference Result 8991 states and 12361 transitions. [2024-11-28 05:13:45,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 05:13:45,763 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 62 [2024-11-28 05:13:45,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:13:45,781 INFO L225 Difference]: With dead ends: 8991 [2024-11-28 05:13:45,781 INFO L226 Difference]: Without dead ends: 8991 [2024-11-28 05:13:45,782 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 122 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:13:45,782 INFO L435 NwaCegarLoop]: 221 mSDtfsCounter, 397 mSDsluCounter, 425 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 401 SdHoareTripleChecker+Valid, 646 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 05:13:45,782 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [401 Valid, 646 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 05:13:45,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8991 states. [2024-11-28 05:13:45,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8991 to 6607. [2024-11-28 05:13:45,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6607 states, 6279 states have (on average 1.3777671603758561) internal successors, (8651), 6376 states have internal predecessors, (8651), 276 states have call successors, (276), 22 states have call predecessors, (276), 22 states have return successors, (276), 208 states have call predecessors, (276), 276 states have call successors, (276) [2024-11-28 05:13:45,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6607 states to 6607 states and 9203 transitions. [2024-11-28 05:13:45,888 INFO L78 Accepts]: Start accepts. Automaton has 6607 states and 9203 transitions. Word has length 62 [2024-11-28 05:13:45,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:13:45,888 INFO L471 AbstractCegarLoop]: Abstraction has 6607 states and 9203 transitions. [2024-11-28 05:13:45,888 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 05:13:45,889 INFO L276 IsEmpty]: Start isEmpty. Operand 6607 states and 9203 transitions. [2024-11-28 05:13:45,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-28 05:13:45,889 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:13:45,890 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:13:45,900 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-28 05:13:46,090 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2024-11-28 05:13:46,091 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2024-11-28 05:13:46,091 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:13:46,091 INFO L85 PathProgramCache]: Analyzing trace with hash 1650844673, now seen corresponding path program 1 times [2024-11-28 05:13:46,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:13:46,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912402054] [2024-11-28 05:13:46,092 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:13:46,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:13:46,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:13:46,204 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-28 05:13:46,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:13:46,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912402054] [2024-11-28 05:13:46,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912402054] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:13:46,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:13:46,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 05:13:46,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731780036] [2024-11-28 05:13:46,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:13:46,205 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 05:13:46,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:13:46,205 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 05:13:46,205 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:13:46,206 INFO L87 Difference]: Start difference. First operand 6607 states and 9203 transitions. Second operand has 6 states, 5 states have (on average 9.6) internal successors, (48), 6 states have internal predecessors, (48), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:13:46,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:13:46,384 INFO L93 Difference]: Finished difference Result 6695 states and 9257 transitions. [2024-11-28 05:13:46,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 05:13:46,385 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.6) internal successors, (48), 6 states have internal predecessors, (48), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 64 [2024-11-28 05:13:46,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:13:46,400 INFO L225 Difference]: With dead ends: 6695 [2024-11-28 05:13:46,400 INFO L226 Difference]: Without dead ends: 6695 [2024-11-28 05:13:46,400 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-28 05:13:46,401 INFO L435 NwaCegarLoop]: 141 mSDtfsCounter, 16 mSDsluCounter, 389 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 530 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 05:13:46,401 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 530 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 05:13:46,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6695 states. [2024-11-28 05:13:46,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6695 to 6605. [2024-11-28 05:13:46,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6605 states, 6279 states have (on average 1.3720337633381112) internal successors, (8615), 6374 states have internal predecessors, (8615), 276 states have call successors, (276), 22 states have call predecessors, (276), 22 states have return successors, (276), 208 states have call predecessors, (276), 276 states have call successors, (276) [2024-11-28 05:13:46,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6605 states to 6605 states and 9167 transitions. [2024-11-28 05:13:46,534 INFO L78 Accepts]: Start accepts. Automaton has 6605 states and 9167 transitions. Word has length 64 [2024-11-28 05:13:46,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:13:46,534 INFO L471 AbstractCegarLoop]: Abstraction has 6605 states and 9167 transitions. [2024-11-28 05:13:46,534 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.6) internal successors, (48), 6 states have internal predecessors, (48), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:13:46,534 INFO L276 IsEmpty]: Start isEmpty. Operand 6605 states and 9167 transitions. [2024-11-28 05:13:46,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-28 05:13:46,536 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:13:46,536 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:13:46,537 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-11-28 05:13:46,537 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2024-11-28 05:13:46,537 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:13:46,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1650844674, now seen corresponding path program 1 times [2024-11-28 05:13:46,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:13:46,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727561864] [2024-11-28 05:13:46,538 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:13:46,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:13:46,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:13:47,983 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 05:13:47,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:13:47,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727561864] [2024-11-28 05:13:47,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727561864] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:13:47,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [959433770] [2024-11-28 05:13:47,984 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:13:47,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:13:47,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:13:47,985 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:13:47,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-28 05:13:48,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:13:48,232 INFO L256 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 80 conjuncts are in the unsatisfiable core [2024-11-28 05:13:48,236 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:13:48,703 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 05:13:48,713 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 05:13:48,815 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 17 [2024-11-28 05:13:48,823 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2024-11-28 05:14:01,543 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 0 case distinctions, treesize of input 30 treesize of output 12 [2024-11-28 05:14:01,661 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:14:01,661 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:14:01,897 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 05:14:01,898 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 41 treesize of output 45 [2024-11-28 05:14:02,270 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 86 treesize of output 82 [2024-11-28 05:14:02,856 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 05:14:02,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [959433770] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:14:02,857 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:14:02,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 14, 14] total 49 [2024-11-28 05:14:02,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002040537] [2024-11-28 05:14:02,857 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:14:02,857 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-11-28 05:14:02,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:14:02,858 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-11-28 05:14:02,859 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=2282, Unknown=3, NotChecked=0, Total=2450 [2024-11-28 05:14:02,859 INFO L87 Difference]: Start difference. First operand 6605 states and 9167 transitions. Second operand has 50 states, 49 states have (on average 3.5918367346938775) internal successors, (176), 49 states have internal predecessors, (176), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-28 05:14:07,501 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:14:19,656 WARN L539 Checker$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 05:14:23,680 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:14:35,865 WARN L539 Checker$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 05:14:39,874 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:14:43,888 WARN L539 Checker$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 05:14:47,911 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:14:51,927 WARN L539 Checker$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 05:14:56,759 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:15:00,781 WARN L539 Checker$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 05:15:12,982 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:15:25,160 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:15:29,169 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:15:33,178 WARN L539 Checker$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 05:15:37,308 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:15:49,581 WARN L539 Checker$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 05:16:29,500 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:16:41,643 WARN L539 Checker$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 05:16:45,753 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:16:57,903 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:17:01,907 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:17:05,918 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:17:09,931 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:17:22,098 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:17:26,110 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:17:38,277 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:17:42,306 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:17:46,314 WARN L539 Checker$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 05:17:50,320 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:17:54,327 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:17:58,339 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:18:02,348 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:18:06,422 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:18:18,580 WARN L539 Checker$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 05:19:19,815 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:19:31,993 WARN L539 Checker$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 05:19:36,060 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:19:48,200 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:19:52,281 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:19:56,287 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:20:00,391 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:20:12,538 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:20:16,551 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:20:28,677 WARN L539 Checker$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 05:20:32,688 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:20:36,694 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:20:40,786 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:20:44,792 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:20:48,896 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:21:01,126 WARN L539 Checker$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 05:21:14,192 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:21:18,199 WARN L539 Checker$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 05:21:18,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:21:18,347 INFO L93 Difference]: Finished difference Result 10841 states and 15050 transitions. [2024-11-28 05:21:18,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2024-11-28 05:21:18,348 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 49 states have (on average 3.5918367346938775) internal successors, (176), 49 states have internal predecessors, (176), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 64 [2024-11-28 05:21:18,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:21:18,431 INFO L225 Difference]: With dead ends: 10841 [2024-11-28 05:21:18,431 INFO L226 Difference]: Without dead ends: 10841 [2024-11-28 05:21:18,437 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6295 ImplicationChecksByTransitivity, 238.4s TimeCoverageRelationStatistics Valid=2424, Invalid=18981, Unknown=57, NotChecked=0, Total=21462 [2024-11-28 05:21:18,440 INFO L435 NwaCegarLoop]: 109 mSDtfsCounter, 2064 mSDsluCounter, 3726 mSDsCounter, 0 mSdLazyCounter, 3041 mSolverCounterSat, 99 mSolverCounterUnsat, 52 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 210.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2067 SdHoareTripleChecker+Valid, 3835 SdHoareTripleChecker+Invalid, 3192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 3041 IncrementalHoareTripleChecker+Invalid, 52 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 210.8s IncrementalHoareTripleChecker+Time [2024-11-28 05:21:18,444 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2067 Valid, 3835 Invalid, 3192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 3041 Invalid, 52 Unknown, 0 Unchecked, 210.8s Time] [2024-11-28 05:21:18,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10841 states. [2024-11-28 05:21:18,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10841 to 7986. [2024-11-28 05:21:18,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7986 states, 7618 states have (on average 1.3864531373063795) internal successors, (10562), 7722 states have internal predecessors, (10562), 314 states have call successors, (314), 27 states have call predecessors, (314), 27 states have return successors, (314), 236 states have call predecessors, (314), 314 states have call successors, (314) [2024-11-28 05:21:18,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7986 states to 7986 states and 11190 transitions. [2024-11-28 05:21:18,800 INFO L78 Accepts]: Start accepts. Automaton has 7986 states and 11190 transitions. Word has length 64 [2024-11-28 05:21:18,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:21:18,801 INFO L471 AbstractCegarLoop]: Abstraction has 7986 states and 11190 transitions. [2024-11-28 05:21:18,801 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 49 states have (on average 3.5918367346938775) internal successors, (176), 49 states have internal predecessors, (176), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-28 05:21:18,801 INFO L276 IsEmpty]: Start isEmpty. Operand 7986 states and 11190 transitions. [2024-11-28 05:21:18,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-28 05:21:18,812 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:21:18,812 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:21:18,830 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-28 05:21:19,014 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2024-11-28 05:21:19,015 INFO L396 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2024-11-28 05:21:19,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:21:19,020 INFO L85 PathProgramCache]: Analyzing trace with hash -2146152808, now seen corresponding path program 1 times [2024-11-28 05:21:19,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:21:19,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100688141] [2024-11-28 05:21:19,020 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:21:19,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:21:19,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:21:20,334 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 05:21:20,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:21:20,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100688141] [2024-11-28 05:21:20,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100688141] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:21:20,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:21:20,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-28 05:21:20,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315673983] [2024-11-28 05:21:20,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:21:20,335 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 05:21:20,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:21:20,336 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 05:21:20,336 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-11-28 05:21:20,336 INFO L87 Difference]: Start difference. First operand 7986 states and 11190 transitions. Second operand has 11 states, 10 states have (on average 5.8) internal successors, (58), 11 states have internal predecessors, (58), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 05:21:20,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:21:20,789 INFO L93 Difference]: Finished difference Result 8739 states and 12121 transitions. [2024-11-28 05:21:20,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 05:21:20,790 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 5.8) internal successors, (58), 11 states have internal predecessors, (58), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 64 [2024-11-28 05:21:20,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:21:20,812 INFO L225 Difference]: With dead ends: 8739 [2024-11-28 05:21:20,812 INFO L226 Difference]: Without dead ends: 8739 [2024-11-28 05:21:20,812 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2024-11-28 05:21:20,814 INFO L435 NwaCegarLoop]: 115 mSDtfsCounter, 172 mSDsluCounter, 937 mSDsCounter, 0 mSdLazyCounter, 434 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 1052 SdHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 05:21:20,814 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 1052 Invalid, 438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 434 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 05:21:20,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8739 states. [2024-11-28 05:21:20,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8739 to 8245. [2024-11-28 05:21:20,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8245 states, 7866 states have (on average 1.3797355708110857) internal successors, (10853), 7974 states have internal predecessors, (10853), 324 states have call successors, (324), 28 states have call predecessors, (324), 28 states have return successors, (324), 242 states have call predecessors, (324), 324 states have call successors, (324) [2024-11-28 05:21:21,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8245 states to 8245 states and 11501 transitions. [2024-11-28 05:21:21,052 INFO L78 Accepts]: Start accepts. Automaton has 8245 states and 11501 transitions. Word has length 64 [2024-11-28 05:21:21,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:21:21,053 INFO L471 AbstractCegarLoop]: Abstraction has 8245 states and 11501 transitions. [2024-11-28 05:21:21,054 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 5.8) internal successors, (58), 11 states have internal predecessors, (58), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 05:21:21,054 INFO L276 IsEmpty]: Start isEmpty. Operand 8245 states and 11501 transitions. [2024-11-28 05:21:21,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-28 05:21:21,055 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:21:21,055 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:21:21,055 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-11-28 05:21:21,055 INFO L396 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr66ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2024-11-28 05:21:21,058 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:21:21,058 INFO L85 PathProgramCache]: Analyzing trace with hash -944125766, now seen corresponding path program 1 times [2024-11-28 05:21:21,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:21:21,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022235877] [2024-11-28 05:21:21,059 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:21:21,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:21:21,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:21:22,806 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:21:22,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:21:22,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022235877] [2024-11-28 05:21:22,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022235877] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:21:22,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [683934137] [2024-11-28 05:21:22,807 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:21:22,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:21:22,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:21:22,812 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:21:22,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-28 05:21:23,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:21:23,072 INFO L256 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-28 05:21:23,076 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:21:23,665 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 05:21:23,809 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 30 [2024-11-28 05:21:24,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:21:24,713 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 05:21:24,713 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 20 [2024-11-28 05:21:24,743 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 13 treesize of output 9 [2024-11-28 05:21:24,788 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:21:24,788 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:21:24,942 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 106 treesize of output 102 [2024-11-28 05:21:27,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [683934137] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:21:27,151 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 05:21:27,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 12] total 27 [2024-11-28 05:21:27,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753384200] [2024-11-28 05:21:27,152 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 05:21:27,152 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-28 05:21:27,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:21:27,153 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-28 05:21:27,153 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=1123, Unknown=0, NotChecked=0, Total=1260 [2024-11-28 05:21:27,154 INFO L87 Difference]: Start difference. First operand 8245 states and 11501 transitions. Second operand has 28 states, 27 states have (on average 4.296296296296297) internal successors, (116), 26 states have internal predecessors, (116), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 05:21:30,133 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:21:35,209 WARN L539 Checker$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 05:21:36,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:21:36,997 INFO L93 Difference]: Finished difference Result 8463 states and 11787 transitions. [2024-11-28 05:21:36,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-28 05:21:36,998 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 4.296296296296297) internal successors, (116), 26 states have internal predecessors, (116), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 63 [2024-11-28 05:21:36,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:21:37,018 INFO L225 Difference]: With dead ends: 8463 [2024-11-28 05:21:37,018 INFO L226 Difference]: Without dead ends: 8452 [2024-11-28 05:21:37,018 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 97 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 549 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=256, Invalid=2000, Unknown=0, NotChecked=0, Total=2256 [2024-11-28 05:21:37,019 INFO L435 NwaCegarLoop]: 159 mSDtfsCounter, 490 mSDsluCounter, 1948 mSDsCounter, 0 mSdLazyCounter, 1240 mSolverCounterSat, 26 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 492 SdHoareTripleChecker+Valid, 2107 SdHoareTripleChecker+Invalid, 1267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1240 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2024-11-28 05:21:37,019 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [492 Valid, 2107 Invalid, 1267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1240 Invalid, 1 Unknown, 0 Unchecked, 7.8s Time] [2024-11-28 05:21:37,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8452 states. [2024-11-28 05:21:37,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8452 to 8270. [2024-11-28 05:21:37,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8270 states, 7891 states have (on average 1.379799771892029) internal successors, (10888), 7999 states have internal predecessors, (10888), 324 states have call successors, (324), 28 states have call predecessors, (324), 28 states have return successors, (324), 242 states have call predecessors, (324), 324 states have call successors, (324) [2024-11-28 05:21:37,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8270 states to 8270 states and 11536 transitions. [2024-11-28 05:21:37,128 INFO L78 Accepts]: Start accepts. Automaton has 8270 states and 11536 transitions. Word has length 63 [2024-11-28 05:21:37,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:21:37,129 INFO L471 AbstractCegarLoop]: Abstraction has 8270 states and 11536 transitions. [2024-11-28 05:21:37,129 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 4.296296296296297) internal successors, (116), 26 states have internal predecessors, (116), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 05:21:37,129 INFO L276 IsEmpty]: Start isEmpty. Operand 8270 states and 11536 transitions. [2024-11-28 05:21:37,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-28 05:21:37,130 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:21:37,130 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:21:37,142 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-28 05:21:37,330 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:21:37,331 INFO L396 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr66ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2024-11-28 05:21:37,331 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:21:37,331 INFO L85 PathProgramCache]: Analyzing trace with hash -685960328, now seen corresponding path program 1 times [2024-11-28 05:21:37,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:21:37,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804569962] [2024-11-28 05:21:37,332 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:21:37,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:21:37,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:21:38,028 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:21:38,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:21:38,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804569962] [2024-11-28 05:21:38,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804569962] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:21:38,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2052038001] [2024-11-28 05:21:38,029 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:21:38,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:21:38,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:21:38,034 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:21:38,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-28 05:21:38,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:21:38,297 INFO L256 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-28 05:21:38,301 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:21:39,097 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 19 treesize of output 1 [2024-11-28 05:21:39,475 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 05:21:39,475 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 17 [2024-11-28 05:21:39,510 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 13 treesize of output 9 [2024-11-28 05:21:39,556 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:21:39,556 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:21:39,642 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 38 [2024-11-28 05:21:57,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2052038001] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:21:57,332 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 05:21:57,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 23 [2024-11-28 05:21:57,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543533938] [2024-11-28 05:21:57,332 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 05:21:57,333 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-28 05:21:57,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:21:57,334 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-28 05:21:57,337 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=815, Unknown=4, NotChecked=0, Total=930 [2024-11-28 05:21:57,337 INFO L87 Difference]: Start difference. First operand 8270 states and 11536 transitions. Second operand has 24 states, 23 states have (on average 5.043478260869565) internal successors, (116), 24 states have internal predecessors, (116), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 05:21:58,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:21:58,122 INFO L93 Difference]: Finished difference Result 8455 states and 11778 transitions. [2024-11-28 05:21:58,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 05:21:58,122 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 5.043478260869565) internal successors, (116), 24 states have internal predecessors, (116), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 63 [2024-11-28 05:21:58,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:21:58,140 INFO L225 Difference]: With dead ends: 8455 [2024-11-28 05:21:58,140 INFO L226 Difference]: Without dead ends: 8442 [2024-11-28 05:21:58,140 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 97 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 17.4s TimeCoverageRelationStatistics Valid=136, Invalid=982, Unknown=4, NotChecked=0, Total=1122 [2024-11-28 05:21:58,141 INFO L435 NwaCegarLoop]: 139 mSDtfsCounter, 565 mSDsluCounter, 1268 mSDsCounter, 0 mSdLazyCounter, 823 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 568 SdHoareTripleChecker+Valid, 1407 SdHoareTripleChecker+Invalid, 842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 823 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 05:21:58,141 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [568 Valid, 1407 Invalid, 842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 823 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 05:21:58,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8442 states. [2024-11-28 05:21:58,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8442 to 8268. [2024-11-28 05:21:58,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8268 states, 7889 states have (on average 1.379642540245912) internal successors, (10884), 7997 states have internal predecessors, (10884), 324 states have call successors, (324), 28 states have call predecessors, (324), 28 states have return successors, (324), 242 states have call predecessors, (324), 324 states have call successors, (324) [2024-11-28 05:21:58,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8268 states to 8268 states and 11532 transitions. [2024-11-28 05:21:58,240 INFO L78 Accepts]: Start accepts. Automaton has 8268 states and 11532 transitions. Word has length 63 [2024-11-28 05:21:58,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:21:58,241 INFO L471 AbstractCegarLoop]: Abstraction has 8268 states and 11532 transitions. [2024-11-28 05:21:58,241 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 5.043478260869565) internal successors, (116), 24 states have internal predecessors, (116), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 05:21:58,241 INFO L276 IsEmpty]: Start isEmpty. Operand 8268 states and 11532 transitions. [2024-11-28 05:21:58,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-28 05:21:58,242 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:21:58,242 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:21:58,252 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-28 05:21:58,446 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2024-11-28 05:21:58,447 INFO L396 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr50REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2024-11-28 05:21:58,447 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:21:58,447 INFO L85 PathProgramCache]: Analyzing trace with hash -2105519350, now seen corresponding path program 1 times [2024-11-28 05:21:58,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:21:58,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626362316] [2024-11-28 05:21:58,448 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:21:58,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:21:58,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:21:59,128 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 05:21:59,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:21:59,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626362316] [2024-11-28 05:21:59,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626362316] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:21:59,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:21:59,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 05:21:59,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682433890] [2024-11-28 05:21:59,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:21:59,129 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 05:21:59,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:21:59,130 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 05:21:59,130 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-28 05:21:59,130 INFO L87 Difference]: Start difference. First operand 8268 states and 11532 transitions. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 05:21:59,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:21:59,536 INFO L93 Difference]: Finished difference Result 8690 states and 11989 transitions. [2024-11-28 05:21:59,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 05:21:59,536 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 65 [2024-11-28 05:21:59,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:21:59,552 INFO L225 Difference]: With dead ends: 8690 [2024-11-28 05:21:59,553 INFO L226 Difference]: Without dead ends: 8690 [2024-11-28 05:21:59,553 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2024-11-28 05:21:59,553 INFO L435 NwaCegarLoop]: 143 mSDtfsCounter, 142 mSDsluCounter, 751 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 894 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 05:21:59,554 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 894 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 05:21:59,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8690 states. [2024-11-28 05:21:59,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8690 to 8257. [2024-11-28 05:21:59,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8257 states, 7878 states have (on average 1.3743335872048743) internal successors, (10827), 7986 states have internal predecessors, (10827), 324 states have call successors, (324), 28 states have call predecessors, (324), 28 states have return successors, (324), 242 states have call predecessors, (324), 324 states have call successors, (324) [2024-11-28 05:21:59,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8257 states to 8257 states and 11475 transitions. [2024-11-28 05:21:59,655 INFO L78 Accepts]: Start accepts. Automaton has 8257 states and 11475 transitions. Word has length 65 [2024-11-28 05:21:59,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:21:59,656 INFO L471 AbstractCegarLoop]: Abstraction has 8257 states and 11475 transitions. [2024-11-28 05:21:59,656 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 05:21:59,656 INFO L276 IsEmpty]: Start isEmpty. Operand 8257 states and 11475 transitions. [2024-11-28 05:21:59,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-28 05:21:59,657 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:21:59,657 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:21:59,657 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-11-28 05:21:59,658 INFO L396 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2024-11-28 05:21:59,658 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:21:59,658 INFO L85 PathProgramCache]: Analyzing trace with hash -2106227351, now seen corresponding path program 1 times [2024-11-28 05:21:59,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:21:59,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271783079] [2024-11-28 05:21:59,658 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:21:59,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:21:59,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:22:00,256 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 05:22:00,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:22:00,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271783079] [2024-11-28 05:22:00,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271783079] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:22:00,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:22:00,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-28 05:22:00,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341130873] [2024-11-28 05:22:00,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:22:00,257 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 05:22:00,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:22:00,258 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 05:22:00,258 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-11-28 05:22:00,258 INFO L87 Difference]: Start difference. First operand 8257 states and 11475 transitions. Second operand has 11 states, 10 states have (on average 5.9) internal successors, (59), 11 states have internal predecessors, (59), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 05:22:00,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:22:00,803 INFO L93 Difference]: Finished difference Result 8739 states and 12015 transitions. [2024-11-28 05:22:00,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 05:22:00,804 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 5.9) internal successors, (59), 11 states have internal predecessors, (59), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 65 [2024-11-28 05:22:00,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:22:00,821 INFO L225 Difference]: With dead ends: 8739 [2024-11-28 05:22:00,821 INFO L226 Difference]: Without dead ends: 8739 [2024-11-28 05:22:00,821 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2024-11-28 05:22:00,822 INFO L435 NwaCegarLoop]: 121 mSDtfsCounter, 171 mSDsluCounter, 917 mSDsCounter, 0 mSdLazyCounter, 529 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 1038 SdHoareTripleChecker+Invalid, 532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 05:22:00,822 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 1038 Invalid, 532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 529 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 05:22:00,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8739 states. [2024-11-28 05:22:00,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8739 to 8257. [2024-11-28 05:22:00,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8257 states, 7878 states have (on average 1.3655750190403655) internal successors, (10758), 7986 states have internal predecessors, (10758), 324 states have call successors, (324), 28 states have call predecessors, (324), 28 states have return successors, (324), 242 states have call predecessors, (324), 324 states have call successors, (324) [2024-11-28 05:22:00,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8257 states to 8257 states and 11406 transitions. [2024-11-28 05:22:00,952 INFO L78 Accepts]: Start accepts. Automaton has 8257 states and 11406 transitions. Word has length 65 [2024-11-28 05:22:00,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:22:00,952 INFO L471 AbstractCegarLoop]: Abstraction has 8257 states and 11406 transitions. [2024-11-28 05:22:00,953 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 5.9) internal successors, (59), 11 states have internal predecessors, (59), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 05:22:00,953 INFO L276 IsEmpty]: Start isEmpty. Operand 8257 states and 11406 transitions. [2024-11-28 05:22:00,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-28 05:22:00,954 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:22:00,954 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:22:00,954 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-11-28 05:22:00,954 INFO L396 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr45ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2024-11-28 05:22:00,955 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:22:00,955 INFO L85 PathProgramCache]: Analyzing trace with hash -868538182, now seen corresponding path program 1 times [2024-11-28 05:22:00,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:22:00,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378715838] [2024-11-28 05:22:00,955 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:22:00,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:22:00,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:22:01,393 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 05:22:01,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:22:01,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378715838] [2024-11-28 05:22:01,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378715838] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:22:01,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:22:01,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-28 05:22:01,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828982368] [2024-11-28 05:22:01,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:22:01,394 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 05:22:01,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:22:01,394 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 05:22:01,394 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-11-28 05:22:01,394 INFO L87 Difference]: Start difference. First operand 8257 states and 11406 transitions. Second operand has 12 states, 11 states have (on average 5.454545454545454) internal successors, (60), 12 states have internal predecessors, (60), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 05:22:01,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:22:01,946 INFO L93 Difference]: Finished difference Result 9003 states and 12285 transitions. [2024-11-28 05:22:01,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 05:22:01,947 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.454545454545454) internal successors, (60), 12 states have internal predecessors, (60), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 66 [2024-11-28 05:22:01,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:22:01,960 INFO L225 Difference]: With dead ends: 9003 [2024-11-28 05:22:01,960 INFO L226 Difference]: Without dead ends: 9003 [2024-11-28 05:22:01,960 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2024-11-28 05:22:01,961 INFO L435 NwaCegarLoop]: 164 mSDtfsCounter, 164 mSDsluCounter, 908 mSDsCounter, 0 mSdLazyCounter, 567 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 1072 SdHoareTripleChecker+Invalid, 569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 05:22:01,961 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 1072 Invalid, 569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 567 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 05:22:01,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9003 states. [2024-11-28 05:22:02,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9003 to 8593. [2024-11-28 05:22:02,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8593 states, 8214 states have (on average 1.3519600681762844) internal successors, (11105), 8322 states have internal predecessors, (11105), 324 states have call successors, (324), 28 states have call predecessors, (324), 28 states have return successors, (324), 242 states have call predecessors, (324), 324 states have call successors, (324) [2024-11-28 05:22:02,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8593 states to 8593 states and 11753 transitions. [2024-11-28 05:22:02,064 INFO L78 Accepts]: Start accepts. Automaton has 8593 states and 11753 transitions. Word has length 66 [2024-11-28 05:22:02,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:22:02,065 INFO L471 AbstractCegarLoop]: Abstraction has 8593 states and 11753 transitions. [2024-11-28 05:22:02,065 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.454545454545454) internal successors, (60), 12 states have internal predecessors, (60), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 05:22:02,065 INFO L276 IsEmpty]: Start isEmpty. Operand 8593 states and 11753 transitions. [2024-11-28 05:22:02,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-28 05:22:02,066 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:22:02,066 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:22:02,066 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-11-28 05:22:02,067 INFO L396 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2024-11-28 05:22:02,067 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:22:02,068 INFO L85 PathProgramCache]: Analyzing trace with hash 2123248878, now seen corresponding path program 1 times [2024-11-28 05:22:02,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:22:02,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587675158] [2024-11-28 05:22:02,068 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:22:02,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:22:02,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:22:05,579 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 19 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 05:22:05,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:22:05,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587675158] [2024-11-28 05:22:05,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587675158] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:22:05,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [810939282] [2024-11-28 05:22:05,580 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:22:05,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:22:05,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:22:05,582 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:22:05,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-28 05:22:05,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:22:05,871 INFO L256 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 119 conjuncts are in the unsatisfiable core [2024-11-28 05:22:05,881 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:22:05,977 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-28 05:22:05,977 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 11 [2024-11-28 05:22:06,240 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 11 treesize of output 7 [2024-11-28 05:22:06,260 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 11 treesize of output 7 [2024-11-28 05:22:06,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:22:06,444 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2024-11-28 05:22:06,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:22:06,453 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2024-11-28 05:22:06,553 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-28 05:22:06,567 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-28 05:22:06,684 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-28 05:22:06,695 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-28 05:22:06,962 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-11-28 05:22:06,972 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-11-28 05:22:07,109 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2024-11-28 05:22:07,134 INFO L349 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2024-11-28 05:22:07,134 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 48 treesize of output 41 [2024-11-28 05:22:08,300 INFO L349 Elim1Store]: treesize reduction 54, result has 5.3 percent of original size [2024-11-28 05:22:08,300 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 72 treesize of output 37 [2024-11-28 05:22:08,313 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:22:08,313 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:22:10,249 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_create_item_~item~0#1.base|)) (.cse2 (+ |c_ULTIMATE.start_append_one_~list#1.offset| 4)) (.cse6 (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_create_item_~item~0#1.base|)) (.cse4 (+ |c_ULTIMATE.start_create_item_~item~0#1.offset| 8))) (and (forall ((v_ArrVal_1845 (Array Int Int))) (or (forall ((v_ArrVal_1849 (Array Int Int)) (v_ArrVal_1846 Int) (v_ArrVal_1848 (Array Int Int))) (= (select (let ((.cse0 (let ((.cse1 (store (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_create_item_~item~0#1.base| (store .cse3 .cse4 v_ArrVal_1846)) |c_ULTIMATE.start_create_item_~cursor#1.base| v_ArrVal_1848))) (store .cse1 |c_ULTIMATE.start_append_one_~list#1.base| (store (store (select .cse1 |c_ULTIMATE.start_append_one_~list#1.base|) |c_ULTIMATE.start_append_one_~list#1.offset| |c_ULTIMATE.start_create_item_~item~0#1.base|) .cse2 |c_ULTIMATE.start_create_item_~item~0#1.base|))))) (select .cse0 (select (select .cse0 |c_~#list~0.base|) |c_~#list~0.offset|))) (+ (select (select (let ((.cse5 (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_create_item_~item~0#1.base| v_ArrVal_1845) |c_ULTIMATE.start_create_item_~cursor#1.base| v_ArrVal_1849))) (store .cse5 |c_ULTIMATE.start_append_one_~list#1.base| (store (store (select .cse5 |c_ULTIMATE.start_append_one_~list#1.base|) |c_ULTIMATE.start_append_one_~list#1.offset| |c_ULTIMATE.start_create_item_~item~0#1.offset|) .cse2 |c_ULTIMATE.start_create_item_~item~0#1.offset|))) |c_~#list~0.base|) |c_~#list~0.offset|) 4)) 0)) (not (= (store .cse6 .cse4 (select v_ArrVal_1845 .cse4)) v_ArrVal_1845)))) (forall ((v_ArrVal_1845 (Array Int Int))) (or (forall ((v_ArrVal_1849 (Array Int Int)) (v_ArrVal_1846 Int) (v_ArrVal_1848 (Array Int Int))) (= (let ((.cse7 (let ((.cse9 (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_create_item_~item~0#1.base| v_ArrVal_1845) |c_ULTIMATE.start_create_item_~cursor#1.base| v_ArrVal_1849))) (store .cse9 |c_ULTIMATE.start_append_one_~list#1.base| (store (store (select .cse9 |c_ULTIMATE.start_append_one_~list#1.base|) |c_ULTIMATE.start_append_one_~list#1.offset| |c_ULTIMATE.start_create_item_~item~0#1.offset|) .cse2 |c_ULTIMATE.start_create_item_~item~0#1.offset|))))) (select (select .cse7 (select (select (let ((.cse8 (store (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_create_item_~item~0#1.base| (store .cse3 .cse4 v_ArrVal_1846)) |c_ULTIMATE.start_create_item_~cursor#1.base| v_ArrVal_1848))) (store .cse8 |c_ULTIMATE.start_append_one_~list#1.base| (store (store (select .cse8 |c_ULTIMATE.start_append_one_~list#1.base|) |c_ULTIMATE.start_append_one_~list#1.offset| |c_ULTIMATE.start_create_item_~item~0#1.base|) .cse2 |c_ULTIMATE.start_create_item_~item~0#1.base|))) |c_~#list~0.base|) |c_~#list~0.offset|)) (+ (select (select .cse7 |c_~#list~0.base|) |c_~#list~0.offset|) 4))) 0)) (not (= (store .cse6 .cse4 (select v_ArrVal_1845 .cse4)) v_ArrVal_1845)))))) is different from false [2024-11-28 05:22:10,389 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse15 (= 2 |c_ULTIMATE.start_create_item_~term_field~0#1|))) (let ((.cse0 (not .cse15)) (.cse4 (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_create_item_~item~0#1.base|)) (.cse3 (+ |c_ULTIMATE.start_append_one_~list#1.offset| 4)) (.cse7 (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_create_item_~item~0#1.base|)) (.cse13 (+ |c_ULTIMATE.start_create_item_~item~0#1.offset| (* |c_ULTIMATE.start_create_item_~term_field~0#1| 4))) (.cse5 (+ |c_ULTIMATE.start_create_item_~item~0#1.offset| 8))) (and (or .cse0 (forall ((v_ArrVal_1845 (Array Int Int)) (v_ArrVal_1849 (Array Int Int)) (v_ArrVal_1846 Int) (v_ArrVal_1848 (Array Int Int))) (or (= (select (let ((.cse1 (let ((.cse2 (store (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_create_item_~item~0#1.base| (store .cse4 .cse5 v_ArrVal_1846)) |c_ULTIMATE.start_create_item_~cursor#1.base| v_ArrVal_1848))) (store .cse2 |c_ULTIMATE.start_append_one_~list#1.base| (store (store (select .cse2 |c_ULTIMATE.start_append_one_~list#1.base|) |c_ULTIMATE.start_append_one_~list#1.offset| |c_ULTIMATE.start_create_item_~item~0#1.base|) .cse3 |c_ULTIMATE.start_create_item_~item~0#1.base|))))) (select .cse1 (select (select .cse1 |c_~#list~0.base|) |c_~#list~0.offset|))) (+ (select (select (let ((.cse6 (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_create_item_~item~0#1.base| v_ArrVal_1845) |c_ULTIMATE.start_create_item_~cursor#1.base| v_ArrVal_1849))) (store .cse6 |c_ULTIMATE.start_append_one_~list#1.base| (store (store (select .cse6 |c_ULTIMATE.start_append_one_~list#1.base|) |c_ULTIMATE.start_append_one_~list#1.offset| |c_ULTIMATE.start_create_item_~item~0#1.offset|) .cse3 |c_ULTIMATE.start_create_item_~item~0#1.offset|))) |c_~#list~0.base|) |c_~#list~0.offset|) 4)) 0) (not (= (store .cse7 .cse5 (select v_ArrVal_1845 .cse5)) v_ArrVal_1845))))) (or .cse0 (forall ((v_ArrVal_1845 (Array Int Int)) (v_ArrVal_1849 (Array Int Int)) (v_ArrVal_1846 Int) (v_ArrVal_1848 (Array Int Int))) (or (= (let ((.cse8 (let ((.cse10 (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_create_item_~item~0#1.base| v_ArrVal_1845) |c_ULTIMATE.start_create_item_~cursor#1.base| v_ArrVal_1849))) (store .cse10 |c_ULTIMATE.start_append_one_~list#1.base| (store (store (select .cse10 |c_ULTIMATE.start_append_one_~list#1.base|) |c_ULTIMATE.start_append_one_~list#1.offset| |c_ULTIMATE.start_create_item_~item~0#1.offset|) .cse3 |c_ULTIMATE.start_create_item_~item~0#1.offset|))))) (select (select .cse8 (select (select (let ((.cse9 (store (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_create_item_~item~0#1.base| (store .cse4 .cse5 v_ArrVal_1846)) |c_ULTIMATE.start_create_item_~cursor#1.base| v_ArrVal_1848))) (store .cse9 |c_ULTIMATE.start_append_one_~list#1.base| (store (store (select .cse9 |c_ULTIMATE.start_append_one_~list#1.base|) |c_ULTIMATE.start_append_one_~list#1.offset| |c_ULTIMATE.start_create_item_~item~0#1.base|) .cse3 |c_ULTIMATE.start_create_item_~item~0#1.base|))) |c_~#list~0.base|) |c_~#list~0.offset|)) (+ (select (select .cse8 |c_~#list~0.base|) |c_~#list~0.offset|) 4))) 0) (not (= (store .cse7 .cse5 (select v_ArrVal_1845 .cse5)) v_ArrVal_1845))))) (or (forall ((v_ArrVal_1845 (Array Int Int)) (|ULTIMATE.start_create_item_#t~ite15#1.base| Int) (v_ArrVal_1849 (Array Int Int)) (v_ArrVal_1846 Int) (v_ArrVal_1848 (Array Int Int))) (or (= (select (let ((.cse11 (let ((.cse12 (store (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_create_item_~item~0#1.base| (store (store .cse4 .cse13 |ULTIMATE.start_create_item_#t~ite15#1.base|) .cse5 v_ArrVal_1846)) |c_ULTIMATE.start_create_item_~cursor#1.base| v_ArrVal_1848))) (store .cse12 |c_ULTIMATE.start_append_one_~list#1.base| (store (store (select .cse12 |c_ULTIMATE.start_append_one_~list#1.base|) |c_ULTIMATE.start_append_one_~list#1.offset| |c_ULTIMATE.start_create_item_~item~0#1.base|) .cse3 |c_ULTIMATE.start_create_item_~item~0#1.base|))))) (select .cse11 (select (select .cse11 |c_~#list~0.base|) |c_~#list~0.offset|))) (+ (select (select (let ((.cse14 (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_create_item_~item~0#1.base| v_ArrVal_1845) |c_ULTIMATE.start_create_item_~cursor#1.base| v_ArrVal_1849))) (store .cse14 |c_ULTIMATE.start_append_one_~list#1.base| (store (store (select .cse14 |c_ULTIMATE.start_append_one_~list#1.base|) |c_ULTIMATE.start_append_one_~list#1.offset| |c_ULTIMATE.start_create_item_~item~0#1.offset|) .cse3 |c_ULTIMATE.start_create_item_~item~0#1.offset|))) |c_~#list~0.base|) |c_~#list~0.offset|) 4)) 0) (not (= (store (store .cse7 .cse13 (select v_ArrVal_1845 .cse13)) .cse5 (select v_ArrVal_1845 .cse5)) v_ArrVal_1845)))) .cse15) (or .cse15 (forall ((v_ArrVal_1845 (Array Int Int)) (|ULTIMATE.start_create_item_#t~ite15#1.base| Int) (v_ArrVal_1849 (Array Int Int)) (v_ArrVal_1846 Int) (v_ArrVal_1848 (Array Int Int))) (or (= (let ((.cse16 (let ((.cse18 (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_create_item_~item~0#1.base| v_ArrVal_1845) |c_ULTIMATE.start_create_item_~cursor#1.base| v_ArrVal_1849))) (store .cse18 |c_ULTIMATE.start_append_one_~list#1.base| (store (store (select .cse18 |c_ULTIMATE.start_append_one_~list#1.base|) |c_ULTIMATE.start_append_one_~list#1.offset| |c_ULTIMATE.start_create_item_~item~0#1.offset|) .cse3 |c_ULTIMATE.start_create_item_~item~0#1.offset|))))) (select (select .cse16 (select (select (let ((.cse17 (store (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_create_item_~item~0#1.base| (store (store .cse4 .cse13 |ULTIMATE.start_create_item_#t~ite15#1.base|) .cse5 v_ArrVal_1846)) |c_ULTIMATE.start_create_item_~cursor#1.base| v_ArrVal_1848))) (store .cse17 |c_ULTIMATE.start_append_one_~list#1.base| (store (store (select .cse17 |c_ULTIMATE.start_append_one_~list#1.base|) |c_ULTIMATE.start_append_one_~list#1.offset| |c_ULTIMATE.start_create_item_~item~0#1.base|) .cse3 |c_ULTIMATE.start_create_item_~item~0#1.base|))) |c_~#list~0.base|) |c_~#list~0.offset|)) (+ (select (select .cse16 |c_~#list~0.base|) |c_~#list~0.offset|) 4))) 0) (not (= (store (store .cse7 .cse13 (select v_ArrVal_1845 .cse13)) .cse5 (select v_ArrVal_1845 .cse5)) v_ArrVal_1845)))))))) is different from false [2024-11-28 05:22:12,578 INFO L349 Elim1Store]: treesize reduction 16, result has 63.6 percent of original size [2024-11-28 05:22:12,579 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 148 treesize of output 108 [2024-11-28 05:22:12,620 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 05:22:12,620 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 6500 treesize of output 6466 [2024-11-28 05:22:12,930 INFO L349 Elim1Store]: treesize reduction 82, result has 66.0 percent of original size [2024-11-28 05:22:12,931 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 21 case distinctions, treesize of input 59271 treesize of output 54007 [2024-11-28 05:22:14,160 INFO L349 Elim1Store]: treesize reduction 168, result has 57.7 percent of original size [2024-11-28 05:22:14,161 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 8947 treesize of output 8327 [2024-11-28 05:22:14,685 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 9093 treesize of output 8837 [2024-11-28 05:22:15,884 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 4 [2024-11-28 05:22:28,004 INFO L349 Elim1Store]: treesize reduction 39, result has 2.5 percent of original size [2024-11-28 05:22:28,004 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 512 treesize of output 1 [2024-11-28 05:22:45,298 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 05:22:45,298 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 898 treesize of output 860 [2024-11-28 05:23:07,507 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 171 treesize of output 167 [2024-11-28 05:23:07,861 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 1068 treesize of output 1060 [2024-11-28 05:23:08,414 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 741 treesize of output 733 [2024-11-28 05:23:10,518 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 171 treesize of output 167 [2024-11-28 05:23:11,010 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 171 treesize of output 167 [2024-11-28 05:23:11,263 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 714 treesize of output 706 [2024-11-28 05:23:11,699 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 640 treesize of output 632 [2024-11-28 05:23:12,159 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 171 treesize of output 167 [2024-11-28 05:23:12,573 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 1098 treesize of output 1090 [2024-11-28 05:23:15,549 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 171 treesize of output 167 [2024-11-28 05:23:23,125 WARN L214 Elim1Store]: Array PQE input equivalent to true [2024-11-28 05:23:24,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:23:24,069 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 05:23:24,070 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 2016 treesize of output 1962 [2024-11-28 05:23:39,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:23:39,328 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 05:23:39,329 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 1767 treesize of output 1737 [2024-11-28 05:24:26,396 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 05:24:26,397 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 540 treesize of output 532 [2024-11-28 05:24:29,770 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 859 treesize of output 835 [2024-11-28 05:24:33,209 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 875 treesize of output 851 [2024-11-28 05:24:35,824 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 235 treesize of output 223 [2024-11-28 05:24:36,660 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 186 treesize of output 178 [2024-11-28 05:24:37,240 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 153 treesize of output 145 [2024-11-28 05:24:37,774 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 153 treesize of output 145 [2024-11-28 05:24:38,497 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 7 treesize of output 3 [2024-11-28 05:24:38,685 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 7 treesize of output 3 [2024-11-28 05:24:38,920 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 7 treesize of output 3 [2024-11-28 05:24:39,126 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 7 treesize of output 3 [2024-11-28 05:24:39,824 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 7 treesize of output 3 [2024-11-28 05:24:39,995 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 7 treesize of output 3 [2024-11-28 05:24:40,161 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 7 treesize of output 3 [2024-11-28 05:24:40,404 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 7 treesize of output 3 [2024-11-28 05:24:41,044 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 322 treesize of output 306 [2024-11-28 05:24:42,767 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 208 treesize of output 200 [2024-11-28 05:24:43,380 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 05:24:43,381 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 108 treesize of output 112 [2024-11-28 05:24:44,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:24:44,341 INFO L349 Elim1Store]: treesize reduction 23, result has 4.2 percent of original size [2024-11-28 05:24:44,342 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 395 treesize of output 1 [2024-11-28 05:24:44,712 INFO L349 Elim1Store]: treesize reduction 56, result has 38.5 percent of original size [2024-11-28 05:24:44,712 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 568 treesize of output 528 [2024-11-28 05:24:47,628 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 05:24:47,628 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 198 treesize of output 210 [2024-11-28 05:24:48,481 WARN L249 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) stderr output: (error "out of memory") [2024-11-28 05:24:48,485 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2024-11-28 05:24:48,486 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 101 [2024-11-28 05:24:48,493 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-28 05:24:48,686 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2024-11-28 05:24:48,688 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseSuccess(Executor.java:277) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.push(Scriptor.java:133) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.push(DiffWrapperScript.java:90) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.push(WrapperScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.push(HistoryRecordingScript.java:107) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:48) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.checkRedundancy(SimplifyDDA2.java:275) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convertForPreprocessedInputTerms(SimplifyDDA2.java:499) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convert(SimplifyDDA2.java:484) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convert(SimplifyDDA2.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.simplify(SimplifyDDA2.java:590) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:245) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplifyWithStatistics(SmtUtils.java:318) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify(QuantifierPusher.java:728) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:133) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.pushMinionEliminatees(QuantifierPushUtilsForSubsetPush.java:255) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:189) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.pushMinionEliminatees(QuantifierPushUtilsForSubsetPush.java:255) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:189) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:283) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:51) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:234) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:416) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:395) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:267) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:325) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:181) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:160) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:106) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:317) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:428) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:314) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:275) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:132) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1518) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:701) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:258) ... 78 more [2024-11-28 05:24:48,695 INFO L158 Benchmark]: Toolchain (without parser) took 711302.44ms. Allocated memory was 117.4MB in the beginning and 1.4GB in the end (delta: 1.3GB). Free memory was 90.7MB in the beginning and 634.6MB in the end (delta: -543.9MB). Peak memory consumption was 906.1MB. Max. memory is 16.1GB. [2024-11-28 05:24:48,696 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 117.4MB. Free memory is still 72.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 05:24:48,696 INFO L158 Benchmark]: CACSL2BoogieTranslator took 695.94ms. Allocated memory is still 117.4MB. Free memory was 90.5MB in the beginning and 68.4MB in the end (delta: 22.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-11-28 05:24:48,696 INFO L158 Benchmark]: Boogie Procedure Inliner took 83.39ms. Allocated memory is still 117.4MB. Free memory was 68.4MB in the beginning and 65.9MB in the end (delta: 2.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 05:24:48,696 INFO L158 Benchmark]: Boogie Preprocessor took 104.85ms. Allocated memory is still 117.4MB. Free memory was 65.9MB in the beginning and 62.2MB in the end (delta: 3.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 05:24:48,696 INFO L158 Benchmark]: RCFGBuilder took 986.77ms. Allocated memory is still 117.4MB. Free memory was 62.0MB in the beginning and 79.9MB in the end (delta: -18.0MB). Peak memory consumption was 31.3MB. Max. memory is 16.1GB. [2024-11-28 05:24:48,696 INFO L158 Benchmark]: TraceAbstraction took 709425.18ms. Allocated memory was 117.4MB in the beginning and 1.4GB in the end (delta: 1.3GB). Free memory was 78.9MB in the beginning and 634.6MB in the end (delta: -555.7MB). Peak memory consumption was 891.6MB. Max. memory is 16.1GB. [2024-11-28 05:24:48,697 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 117.4MB. Free memory is still 72.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 695.94ms. Allocated memory is still 117.4MB. Free memory was 90.5MB in the beginning and 68.4MB in the end (delta: 22.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 83.39ms. Allocated memory is still 117.4MB. Free memory was 68.4MB in the beginning and 65.9MB in the end (delta: 2.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 104.85ms. Allocated memory is still 117.4MB. Free memory was 65.9MB in the beginning and 62.2MB in the end (delta: 3.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 986.77ms. Allocated memory is still 117.4MB. Free memory was 62.0MB in the beginning and 79.9MB in the end (delta: -18.0MB). Peak memory consumption was 31.3MB. Max. memory is 16.1GB. * TraceAbstraction took 709425.18ms. Allocated memory was 117.4MB in the beginning and 1.4GB in the end (delta: 1.3GB). Free memory was 78.9MB in the beginning and 634.6MB in the end (delta: -555.7MB). Peak memory consumption was 891.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/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_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext-properties/test-0217_1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e4aac8fd1b71e0bd84f9ab8e5c238dc6bf3a295fcb9cebe504ba6d0c9a6a7b7a --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 05:24:51,090 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 05:24:51,186 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-11-28 05:24:51,191 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 05:24:51,192 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 05:24:51,233 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 05:24:51,234 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 05:24:51,234 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 05:24:51,234 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 05:24:51,234 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 05:24:51,234 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 05:24:51,235 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 05:24:51,235 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 05:24:51,235 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 05:24:51,235 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 05:24:51,236 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 05:24:51,236 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 05:24:51,236 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 05:24:51,237 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 05:24:51,237 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 05:24:51,237 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-28 05:24:51,237 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-28 05:24:51,238 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-28 05:24:51,238 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 05:24:51,238 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-28 05:24:51,238 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-28 05:24:51,238 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-28 05:24:51,238 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 05:24:51,238 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 05:24:51,239 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 05:24:51,239 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 05:24:51,239 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 05:24:51,240 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 05:24:51,240 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 05:24:51,240 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 05:24:51,240 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:24:51,240 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 05:24:51,240 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 05:24:51,240 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 05:24:51,240 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 05:24:51,240 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:24:51,240 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 05:24:51,240 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 05:24:51,241 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-28 05:24:51,241 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-28 05:24:51,241 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 05:24:51,241 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 05:24:51,241 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 05:24:51,241 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 05:24:51,241 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_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e4aac8fd1b71e0bd84f9ab8e5c238dc6bf3a295fcb9cebe504ba6d0c9a6a7b7a [2024-11-28 05:24:51,568 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 05:24:51,576 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 05:24:51,578 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 05:24:51,580 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 05:24:51,580 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 05:24:51,581 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/list-ext-properties/test-0217_1.i [2024-11-28 05:24:54,535 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/data/1e8bdea2f/4bbd4d341131479ab6cd67033dcb112d/FLAG48727eee9 [2024-11-28 05:24:54,803 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 05:24:54,803 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/sv-benchmarks/c/list-ext-properties/test-0217_1.i [2024-11-28 05:24:54,822 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/data/1e8bdea2f/4bbd4d341131479ab6cd67033dcb112d/FLAG48727eee9 [2024-11-28 05:24:55,091 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/data/1e8bdea2f/4bbd4d341131479ab6cd67033dcb112d [2024-11-28 05:24:55,093 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 05:24:55,095 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 05:24:55,096 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 05:24:55,096 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 05:24:55,099 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 05:24:55,100 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:24:55" (1/1) ... [2024-11-28 05:24:55,100 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a96004b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:24:55, skipping insertion in model container [2024-11-28 05:24:55,101 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:24:55" (1/1) ... [2024-11-28 05:24:55,132 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 05:24:55,647 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 05:24:55,667 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 05:24:55,768 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 05:24:55,818 INFO L204 MainTranslator]: Completed translation [2024-11-28 05:24:55,819 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:24:55 WrapperNode [2024-11-28 05:24:55,820 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 05:24:55,821 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 05:24:55,821 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 05:24:55,821 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 05:24:55,829 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:24:55" (1/1) ... [2024-11-28 05:24:55,846 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:24:55" (1/1) ... [2024-11-28 05:24:55,873 INFO L138 Inliner]: procedures = 182, calls = 47, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 243 [2024-11-28 05:24:55,873 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 05:24:55,874 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 05:24:55,874 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 05:24:55,874 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 05:24:55,883 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:24:55" (1/1) ... [2024-11-28 05:24:55,883 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:24:55" (1/1) ... [2024-11-28 05:24:55,888 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:24:55" (1/1) ... [2024-11-28 05:24:55,922 INFO L175 MemorySlicer]: Split 32 memory accesses to 2 slices as follows [2, 30]. 94 percent of accesses are in the largest equivalence class. The 4 initializations are split as follows [2, 2]. The 11 writes are split as follows [0, 11]. [2024-11-28 05:24:55,926 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:24:55" (1/1) ... [2024-11-28 05:24:55,926 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:24:55" (1/1) ... [2024-11-28 05:24:55,949 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:24:55" (1/1) ... [2024-11-28 05:24:55,951 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:24:55" (1/1) ... [2024-11-28 05:24:55,954 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:24:55" (1/1) ... [2024-11-28 05:24:55,956 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:24:55" (1/1) ... [2024-11-28 05:24:55,958 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:24:55" (1/1) ... [2024-11-28 05:24:55,962 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 05:24:55,962 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 05:24:55,963 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 05:24:55,963 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 05:24:55,964 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:24:55" (1/1) ... [2024-11-28 05:24:55,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:24:55,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:24:56,006 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 05:24:56,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 05:24:56,035 INFO L130 BoogieDeclarations]: Found specification of procedure rand_end_point [2024-11-28 05:24:56,035 INFO L138 BoogieDeclarations]: Found implementation of procedure rand_end_point [2024-11-28 05:24:56,035 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-28 05:24:56,035 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 05:24:56,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-28 05:24:56,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-28 05:24:56,035 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-28 05:24:56,036 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-28 05:24:56,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#0 [2024-11-28 05:24:56,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#1 [2024-11-28 05:24:56,036 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 05:24:56,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-28 05:24:56,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-28 05:24:56,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-28 05:24:56,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-28 05:24:56,036 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 05:24:56,036 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 05:24:56,279 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 05:24:56,281 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 05:24:57,163 INFO L? ?]: Removed 186 outVars from TransFormulas that were not future-live. [2024-11-28 05:24:57,163 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 05:24:57,176 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 05:24:57,176 INFO L312 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-28 05:24:57,177 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:24:57 BoogieIcfgContainer [2024-11-28 05:24:57,177 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 05:24:57,179 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 05:24:57,179 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 05:24:57,184 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 05:24:57,184 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 05:24:55" (1/3) ... [2024-11-28 05:24:57,185 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d48e7e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:24:57, skipping insertion in model container [2024-11-28 05:24:57,185 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:24:55" (2/3) ... [2024-11-28 05:24:57,185 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d48e7e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:24:57, skipping insertion in model container [2024-11-28 05:24:57,185 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:24:57" (3/3) ... [2024-11-28 05:24:57,186 INFO L128 eAbstractionObserver]: Analyzing ICFG test-0217_1.i [2024-11-28 05:24:57,201 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 05:24:57,202 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG test-0217_1.i that has 2 procedures, 170 locations, 1 initial locations, 6 loop locations, and 67 error locations. [2024-11-28 05:24:57,243 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 05:24:57,255 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;@4339834e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 05:24:57,255 INFO L334 AbstractCegarLoop]: Starting to check reachability of 67 error locations. [2024-11-28 05:24:57,259 INFO L276 IsEmpty]: Start isEmpty. Operand has 170 states, 99 states have (on average 1.9696969696969697) internal successors, (195), 166 states have internal predecessors, (195), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 05:24:57,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-28 05:24:57,269 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:24:57,269 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-28 05:24:57,270 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr60REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2024-11-28 05:24:57,276 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:24:57,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1045643339, now seen corresponding path program 1 times [2024-11-28 05:24:57,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:24:57,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [926368666] [2024-11-28 05:24:57,288 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:24:57,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:24:57,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:24:57,294 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:24:57,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 05:24:57,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:24:57,413 INFO L256 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-28 05:24:57,416 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:24:57,432 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 05:24:57,432 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:24:57,433 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:24:57,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [926368666] [2024-11-28 05:24:57,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [926368666] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:24:57,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:24:57,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 05:24:57,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923479833] [2024-11-28 05:24:57,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:24:57,442 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 05:24:57,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:24:57,466 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 05:24:57,467 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 05:24:57,469 INFO L87 Difference]: Start difference. First operand has 170 states, 99 states have (on average 1.9696969696969697) internal successors, (195), 166 states have internal predecessors, (195), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 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 05:24:57,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:24:57,493 INFO L93 Difference]: Finished difference Result 170 states and 192 transitions. [2024-11-28 05:24:57,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 05:24:57,495 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 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 05:24:57,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:24:57,501 INFO L225 Difference]: With dead ends: 170 [2024-11-28 05:24:57,501 INFO L226 Difference]: Without dead ends: 168 [2024-11-28 05:24:57,503 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 05:24:57,506 INFO L435 NwaCegarLoop]: 192 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 05:24:57,506 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 05:24:57,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2024-11-28 05:24:57,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2024-11-28 05:24:57,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 98 states have (on average 1.8979591836734695) internal successors, (186), 164 states have internal predecessors, (186), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 05:24:57,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 190 transitions. [2024-11-28 05:24:57,547 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 190 transitions. Word has length 6 [2024-11-28 05:24:57,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:24:57,548 INFO L471 AbstractCegarLoop]: Abstraction has 168 states and 190 transitions. [2024-11-28 05:24:57,548 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 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 05:24:57,548 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 190 transitions. [2024-11-28 05:24:57,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-28 05:24:57,549 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:24:57,549 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:24:57,558 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-28 05:24:57,753 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:24:57,754 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr60REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2024-11-28 05:24:57,754 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:24:57,754 INFO L85 PathProgramCache]: Analyzing trace with hash 564850639, now seen corresponding path program 1 times [2024-11-28 05:24:57,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:24:57,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1245572972] [2024-11-28 05:24:57,755 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:24:57,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:24:57,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:24:57,757 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:24:57,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 05:24:57,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:24:57,842 INFO L256 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 05:24:57,842 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:24:57,889 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 05:24:57,893 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:24:57,893 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:24:57,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1245572972] [2024-11-28 05:24:57,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1245572972] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:24:57,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:24:57,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 05:24:57,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832874007] [2024-11-28 05:24:57,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:24:57,894 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:24:57,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:24:57,895 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:24:57,895 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:24:57,895 INFO L87 Difference]: Start difference. First operand 168 states and 190 transitions. Second operand has 4 states, 4 states have (on average 2.0) 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 05:24:57,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:24:57,969 INFO L93 Difference]: Finished difference Result 331 states and 375 transitions. [2024-11-28 05:24:57,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:24:57,970 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) 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 05:24:57,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:24:57,972 INFO L225 Difference]: With dead ends: 331 [2024-11-28 05:24:57,975 INFO L226 Difference]: Without dead ends: 331 [2024-11-28 05:24:57,975 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 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 05:24:57,976 INFO L435 NwaCegarLoop]: 187 mSDtfsCounter, 180 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 557 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 05:24:57,976 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 557 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 05:24:57,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2024-11-28 05:24:57,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 170. [2024-11-28 05:24:57,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 100 states have (on average 1.88) internal successors, (188), 166 states have internal predecessors, (188), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 05:24:57,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 192 transitions. [2024-11-28 05:24:57,990 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 192 transitions. Word has length 8 [2024-11-28 05:24:57,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:24:57,991 INFO L471 AbstractCegarLoop]: Abstraction has 170 states and 192 transitions. [2024-11-28 05:24:57,991 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) 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 05:24:57,991 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 192 transitions. [2024-11-28 05:24:57,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-28 05:24:57,991 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:24:57,992 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:24:58,000 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 05:24:58,192 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:24:58,192 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr60REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2024-11-28 05:24:58,193 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:24:58,193 INFO L85 PathProgramCache]: Analyzing trace with hash 563003597, now seen corresponding path program 1 times [2024-11-28 05:24:58,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:24:58,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1782254055] [2024-11-28 05:24:58,193 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:24:58,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:24:58,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:24:58,197 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:24:58,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 05:24:58,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:24:58,298 INFO L256 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 05:24:58,299 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:24:58,486 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 05:24:58,486 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:24:58,487 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:24:58,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1782254055] [2024-11-28 05:24:58,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1782254055] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:24:58,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:24:58,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 05:24:58,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622675317] [2024-11-28 05:24:58,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:24:58,488 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:24:58,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:24:58,489 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:24:58,489 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:24:58,490 INFO L87 Difference]: Start difference. First operand 170 states and 192 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 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 05:24:59,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:24:59,133 INFO L93 Difference]: Finished difference Result 271 states and 306 transitions. [2024-11-28 05:24:59,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:24:59,134 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 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 05:24:59,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:24:59,135 INFO L225 Difference]: With dead ends: 271 [2024-11-28 05:24:59,135 INFO L226 Difference]: Without dead ends: 271 [2024-11-28 05:24:59,136 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 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 05:24:59,137 INFO L435 NwaCegarLoop]: 163 mSDtfsCounter, 108 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 418 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 05:24:59,137 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 418 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 05:24:59,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2024-11-28 05:24:59,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 222. [2024-11-28 05:24:59,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 149 states have (on average 1.8724832214765101) internal successors, (279), 216 states have internal predecessors, (279), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-28 05:24:59,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 287 transitions. [2024-11-28 05:24:59,155 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 287 transitions. Word has length 8 [2024-11-28 05:24:59,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:24:59,155 INFO L471 AbstractCegarLoop]: Abstraction has 222 states and 287 transitions. [2024-11-28 05:24:59,155 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 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 05:24:59,155 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 287 transitions. [2024-11-28 05:24:59,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-28 05:24:59,156 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:24:59,156 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:24:59,169 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 05:24:59,360 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:24:59,361 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr59REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2024-11-28 05:24:59,361 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:24:59,361 INFO L85 PathProgramCache]: Analyzing trace with hash 563003596, now seen corresponding path program 1 times [2024-11-28 05:24:59,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:24:59,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [799028971] [2024-11-28 05:24:59,362 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:24:59,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:24:59,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:24:59,363 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:24:59,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 05:24:59,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:24:59,452 INFO L256 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 05:24:59,453 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:24:59,531 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 05:24:59,532 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:24:59,532 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:24:59,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [799028971] [2024-11-28 05:24:59,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [799028971] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:24:59,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:24:59,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 05:24:59,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071951681] [2024-11-28 05:24:59,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:24:59,533 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:24:59,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:24:59,534 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:24:59,534 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:24:59,534 INFO L87 Difference]: Start difference. First operand 222 states and 287 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 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 05:24:59,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:24:59,968 INFO L93 Difference]: Finished difference Result 429 states and 554 transitions. [2024-11-28 05:24:59,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:24:59,968 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 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 05:24:59,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:24:59,972 INFO L225 Difference]: With dead ends: 429 [2024-11-28 05:24:59,972 INFO L226 Difference]: Without dead ends: 429 [2024-11-28 05:24:59,972 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 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 05:24:59,973 INFO L435 NwaCegarLoop]: 126 mSDtfsCounter, 170 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 05:24:59,973 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 247 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 05:24:59,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2024-11-28 05:25:00,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 318. [2024-11-28 05:25:00,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 239 states have (on average 1.8284518828451883) internal successors, (437), 307 states have internal predecessors, (437), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 6 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-28 05:25:00,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 453 transitions. [2024-11-28 05:25:00,014 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 453 transitions. Word has length 8 [2024-11-28 05:25:00,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:25:00,014 INFO L471 AbstractCegarLoop]: Abstraction has 318 states and 453 transitions. [2024-11-28 05:25:00,015 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 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 05:25:00,015 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 453 transitions. [2024-11-28 05:25:00,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-28 05:25:00,015 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:25:00,015 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:25:00,028 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 05:25:00,216 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:25:00,216 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr60REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2024-11-28 05:25:00,216 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:25:00,216 INFO L85 PathProgramCache]: Analyzing trace with hash 563003659, now seen corresponding path program 1 times [2024-11-28 05:25:00,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:25:00,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1751598113] [2024-11-28 05:25:00,217 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:25:00,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:25:00,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:25:00,219 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:25:00,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 05:25:00,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:25:00,287 INFO L256 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 05:25:00,290 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:25:00,422 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 05:25:00,422 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:25:00,422 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:25:00,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1751598113] [2024-11-28 05:25:00,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1751598113] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:25:00,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:25:00,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 05:25:00,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466705667] [2024-11-28 05:25:00,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:25:00,423 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:25:00,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:25:00,424 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:25:00,427 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:25:00,427 INFO L87 Difference]: Start difference. First operand 318 states and 453 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 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 05:25:00,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:25:00,870 INFO L93 Difference]: Finished difference Result 368 states and 473 transitions. [2024-11-28 05:25:00,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:25:00,871 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 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 05:25:00,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:25:00,872 INFO L225 Difference]: With dead ends: 368 [2024-11-28 05:25:00,872 INFO L226 Difference]: Without dead ends: 368 [2024-11-28 05:25:00,873 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 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 05:25:00,873 INFO L435 NwaCegarLoop]: 164 mSDtfsCounter, 106 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 05:25:00,873 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 373 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 05:25:00,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2024-11-28 05:25:00,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 318. [2024-11-28 05:25:00,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 239 states have (on average 1.8284518828451883) internal successors, (437), 307 states have internal predecessors, (437), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 6 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-28 05:25:00,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 453 transitions. [2024-11-28 05:25:00,904 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 453 transitions. Word has length 8 [2024-11-28 05:25:00,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:25:00,904 INFO L471 AbstractCegarLoop]: Abstraction has 318 states and 453 transitions. [2024-11-28 05:25:00,905 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 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 05:25:00,905 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 453 transitions. [2024-11-28 05:25:00,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-28 05:25:00,905 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:25:00,905 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:25:00,912 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-28 05:25:01,106 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:25:01,106 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2024-11-28 05:25:01,106 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:25:01,106 INFO L85 PathProgramCache]: Analyzing trace with hash 593094939, now seen corresponding path program 1 times [2024-11-28 05:25:01,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:25:01,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1418491706] [2024-11-28 05:25:01,107 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:25:01,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:25:01,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:25:01,109 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:25:01,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 05:25:01,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:25:01,180 INFO L256 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 05:25:01,181 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:25:01,213 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 05:25:01,213 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:25:01,213 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:25:01,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1418491706] [2024-11-28 05:25:01,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1418491706] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:25:01,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:25:01,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:25:01,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079249514] [2024-11-28 05:25:01,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:25:01,214 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:25:01,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:25:01,214 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:25:01,214 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:25:01,215 INFO L87 Difference]: Start difference. First operand 318 states and 453 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:25:01,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:25:01,253 INFO L93 Difference]: Finished difference Result 456 states and 607 transitions. [2024-11-28 05:25:01,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:25:01,253 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-28 05:25:01,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:25:01,256 INFO L225 Difference]: With dead ends: 456 [2024-11-28 05:25:01,257 INFO L226 Difference]: Without dead ends: 456 [2024-11-28 05:25:01,257 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 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 05:25:01,258 INFO L435 NwaCegarLoop]: 187 mSDtfsCounter, 158 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 05:25:01,258 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 370 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 05:25:01,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2024-11-28 05:25:01,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 320. [2024-11-28 05:25:01,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 241 states have (on average 1.8132780082987552) internal successors, (437), 309 states have internal predecessors, (437), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 6 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-28 05:25:01,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 453 transitions. [2024-11-28 05:25:01,277 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 453 transitions. Word has length 11 [2024-11-28 05:25:01,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:25:01,277 INFO L471 AbstractCegarLoop]: Abstraction has 320 states and 453 transitions. [2024-11-28 05:25:01,277 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:25:01,277 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 453 transitions. [2024-11-28 05:25:01,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-28 05:25:01,278 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:25:01,278 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:25:01,286 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-28 05:25:01,482 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:25:01,483 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr66ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2024-11-28 05:25:01,483 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:25:01,483 INFO L85 PathProgramCache]: Analyzing trace with hash 1206076533, now seen corresponding path program 1 times [2024-11-28 05:25:01,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:25:01,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [576496027] [2024-11-28 05:25:01,483 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:25:01,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:25:01,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:25:01,485 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:25:01,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 05:25:01,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:25:01,550 INFO L256 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 05:25:01,552 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:25:01,576 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 05:25:01,577 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:25:01,577 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:25:01,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [576496027] [2024-11-28 05:25:01,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [576496027] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:25:01,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:25:01,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 05:25:01,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105378054] [2024-11-28 05:25:01,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:25:01,578 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:25:01,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:25:01,578 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:25:01,578 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:25:01,579 INFO L87 Difference]: Start difference. First operand 320 states and 453 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 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 05:25:01,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:25:01,834 INFO L93 Difference]: Finished difference Result 371 states and 500 transitions. [2024-11-28 05:25:01,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:25:01,835 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 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 05:25:01,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:25:01,836 INFO L225 Difference]: With dead ends: 371 [2024-11-28 05:25:01,836 INFO L226 Difference]: Without dead ends: 364 [2024-11-28 05:25:01,837 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 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 05:25:01,837 INFO L435 NwaCegarLoop]: 164 mSDtfsCounter, 71 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 05:25:01,838 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 285 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 05:25:01,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2024-11-28 05:25:01,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 317. [2024-11-28 05:25:01,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 238 states have (on average 1.815126050420168) internal successors, (432), 306 states have internal predecessors, (432), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 6 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-28 05:25:01,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 448 transitions. [2024-11-28 05:25:01,851 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 448 transitions. Word has length 12 [2024-11-28 05:25:01,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:25:01,851 INFO L471 AbstractCegarLoop]: Abstraction has 317 states and 448 transitions. [2024-11-28 05:25:01,851 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 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 05:25:01,851 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 448 transitions. [2024-11-28 05:25:01,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-28 05:25:01,852 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:25:01,852 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:25:01,861 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-28 05:25:02,056 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:25:02,056 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2024-11-28 05:25:02,057 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:25:02,057 INFO L85 PathProgramCache]: Analyzing trace with hash -448454852, now seen corresponding path program 1 times [2024-11-28 05:25:02,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:25:02,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [937159589] [2024-11-28 05:25:02,057 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:25:02,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:25:02,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:25:02,061 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:25:02,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 05:25:02,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:25:02,137 INFO L256 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 05:25:02,139 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:25:02,298 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 05:25:02,299 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:25:02,299 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:25:02,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [937159589] [2024-11-28 05:25:02,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [937159589] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:25:02,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:25:02,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 05:25:02,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298570157] [2024-11-28 05:25:02,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:25:02,300 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:25:02,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:25:02,301 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:25:02,301 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:25:02,301 INFO L87 Difference]: Start difference. First operand 317 states and 448 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:25:02,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:25:02,772 INFO L93 Difference]: Finished difference Result 425 states and 543 transitions. [2024-11-28 05:25:02,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:25:02,772 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2024-11-28 05:25:02,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:25:02,774 INFO L225 Difference]: With dead ends: 425 [2024-11-28 05:25:02,774 INFO L226 Difference]: Without dead ends: 425 [2024-11-28 05:25:02,774 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 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 05:25:02,775 INFO L435 NwaCegarLoop]: 125 mSDtfsCounter, 169 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 05:25:02,775 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 358 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 05:25:02,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2024-11-28 05:25:02,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 323. [2024-11-28 05:25:02,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 244 states have (on average 1.7950819672131149) internal successors, (438), 312 states have internal predecessors, (438), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 6 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-28 05:25:02,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 454 transitions. [2024-11-28 05:25:02,786 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 454 transitions. Word has length 17 [2024-11-28 05:25:02,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:25:02,786 INFO L471 AbstractCegarLoop]: Abstraction has 323 states and 454 transitions. [2024-11-28 05:25:02,786 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:25:02,786 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 454 transitions. [2024-11-28 05:25:02,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-28 05:25:02,787 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:25:02,787 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:25:02,796 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-28 05:25:02,991 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:25:02,991 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2024-11-28 05:25:02,992 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:25:02,992 INFO L85 PathProgramCache]: Analyzing trace with hash -448454851, now seen corresponding path program 1 times [2024-11-28 05:25:02,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:25:02,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [409576404] [2024-11-28 05:25:02,992 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:25:02,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:25:02,992 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:25:02,994 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:25:02,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 05:25:03,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:25:03,067 INFO L256 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-28 05:25:03,069 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:25:03,280 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 05:25:03,281 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:25:03,281 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:25:03,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [409576404] [2024-11-28 05:25:03,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [409576404] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:25:03,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:25:03,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 05:25:03,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876432168] [2024-11-28 05:25:03,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:25:03,282 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:25:03,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:25:03,282 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:25:03,282 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:25:03,283 INFO L87 Difference]: Start difference. First operand 323 states and 454 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:25:03,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:25:03,762 INFO L93 Difference]: Finished difference Result 357 states and 454 transitions. [2024-11-28 05:25:03,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:25:03,763 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2024-11-28 05:25:03,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:25:03,764 INFO L225 Difference]: With dead ends: 357 [2024-11-28 05:25:03,764 INFO L226 Difference]: Without dead ends: 357 [2024-11-28 05:25:03,765 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 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 05:25:03,765 INFO L435 NwaCegarLoop]: 174 mSDtfsCounter, 91 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 05:25:03,765 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 432 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 05:25:03,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2024-11-28 05:25:03,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 323. [2024-11-28 05:25:03,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 244 states have (on average 1.7704918032786885) internal successors, (432), 312 states have internal predecessors, (432), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 6 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-28 05:25:03,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 448 transitions. [2024-11-28 05:25:03,775 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 448 transitions. Word has length 17 [2024-11-28 05:25:03,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:25:03,776 INFO L471 AbstractCegarLoop]: Abstraction has 323 states and 448 transitions. [2024-11-28 05:25:03,776 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:25:03,776 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 448 transitions. [2024-11-28 05:25:03,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-28 05:25:03,776 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:25:03,777 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:25:03,785 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-28 05:25:03,977 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:25:03,977 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2024-11-28 05:25:03,978 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:25:03,978 INFO L85 PathProgramCache]: Analyzing trace with hash -784193826, now seen corresponding path program 1 times [2024-11-28 05:25:03,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:25:03,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [614260404] [2024-11-28 05:25:03,978 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:25:03,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:25:03,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:25:03,981 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:25:03,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 05:25:04,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:25:04,060 INFO L256 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 05:25:04,062 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:25:04,221 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-11-28 05:25:04,222 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2024-11-28 05:25:04,266 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 05:25:04,266 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:25:04,266 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:25:04,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [614260404] [2024-11-28 05:25:04,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [614260404] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:25:04,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:25:04,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 05:25:04,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033148180] [2024-11-28 05:25:04,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:25:04,267 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:25:04,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:25:04,267 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:25:04,268 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:25:04,268 INFO L87 Difference]: Start difference. First operand 323 states and 448 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:25:04,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:25:04,835 INFO L93 Difference]: Finished difference Result 458 states and 579 transitions. [2024-11-28 05:25:04,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:25:04,836 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2024-11-28 05:25:04,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:25:04,838 INFO L225 Difference]: With dead ends: 458 [2024-11-28 05:25:04,838 INFO L226 Difference]: Without dead ends: 458 [2024-11-28 05:25:04,838 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 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 05:25:04,839 INFO L435 NwaCegarLoop]: 124 mSDtfsCounter, 242 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 05:25:04,839 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 355 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 05:25:04,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2024-11-28 05:25:04,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 344. [2024-11-28 05:25:04,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 265 states have (on average 1.788679245283019) internal successors, (474), 333 states have internal predecessors, (474), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 6 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-28 05:25:04,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 490 transitions. [2024-11-28 05:25:04,850 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 490 transitions. Word has length 18 [2024-11-28 05:25:04,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:25:04,850 INFO L471 AbstractCegarLoop]: Abstraction has 344 states and 490 transitions. [2024-11-28 05:25:04,850 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:25:04,850 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 490 transitions. [2024-11-28 05:25:04,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-28 05:25:04,851 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:25:04,851 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:25:04,861 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-28 05:25:05,051 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:25:05,052 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2024-11-28 05:25:05,052 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:25:05,052 INFO L85 PathProgramCache]: Analyzing trace with hash -784193825, now seen corresponding path program 1 times [2024-11-28 05:25:05,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:25:05,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1483212058] [2024-11-28 05:25:05,052 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:25:05,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:25:05,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:25:05,054 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:25:05,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-28 05:25:05,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:25:05,131 INFO L256 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-28 05:25:05,134 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:25:05,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:25:05,449 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-28 05:25:05,508 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 05:25:05,509 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:25:05,509 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:25:05,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1483212058] [2024-11-28 05:25:05,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1483212058] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:25:05,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:25:05,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 05:25:05,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671420291] [2024-11-28 05:25:05,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:25:05,509 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 05:25:05,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:25:05,510 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 05:25:05,510 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:25:05,510 INFO L87 Difference]: Start difference. First operand 344 states and 490 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:25:06,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:25:06,668 INFO L93 Difference]: Finished difference Result 458 states and 574 transitions. [2024-11-28 05:25:06,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 05:25:06,669 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2024-11-28 05:25:06,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:25:06,671 INFO L225 Difference]: With dead ends: 458 [2024-11-28 05:25:06,671 INFO L226 Difference]: Without dead ends: 458 [2024-11-28 05:25:06,671 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-28 05:25:06,672 INFO L435 NwaCegarLoop]: 104 mSDtfsCounter, 236 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 473 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 475 SdHoareTripleChecker+Invalid, 478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-28 05:25:06,672 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 475 Invalid, 478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 473 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-28 05:25:06,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2024-11-28 05:25:06,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 344. [2024-11-28 05:25:06,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 265 states have (on average 1.769811320754717) internal successors, (469), 333 states have internal predecessors, (469), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 6 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-28 05:25:06,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 485 transitions. [2024-11-28 05:25:06,683 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 485 transitions. Word has length 18 [2024-11-28 05:25:06,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:25:06,683 INFO L471 AbstractCegarLoop]: Abstraction has 344 states and 485 transitions. [2024-11-28 05:25:06,683 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:25:06,683 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 485 transitions. [2024-11-28 05:25:06,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-28 05:25:06,684 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:25:06,684 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:25:06,693 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-28 05:25:06,888 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:25:06,888 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2024-11-28 05:25:06,889 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:25:06,889 INFO L85 PathProgramCache]: Analyzing trace with hash -2079818588, now seen corresponding path program 1 times [2024-11-28 05:25:06,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:25:06,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [738173106] [2024-11-28 05:25:06,889 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:25:06,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:25:06,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:25:06,894 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:25:06,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-28 05:25:06,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:25:06,981 INFO L256 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-28 05:25:06,984 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:25:07,290 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 05:25:07,290 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:25:07,290 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:25:07,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [738173106] [2024-11-28 05:25:07,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [738173106] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:25:07,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:25:07,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 05:25:07,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276887260] [2024-11-28 05:25:07,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:25:07,291 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 05:25:07,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:25:07,291 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 05:25:07,291 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-28 05:25:07,292 INFO L87 Difference]: Start difference. First operand 344 states and 485 transitions. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:25:07,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:25:07,996 INFO L93 Difference]: Finished difference Result 457 states and 615 transitions. [2024-11-28 05:25:07,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 05:25:07,997 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2024-11-28 05:25:07,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:25:07,999 INFO L225 Difference]: With dead ends: 457 [2024-11-28 05:25:07,999 INFO L226 Difference]: Without dead ends: 457 [2024-11-28 05:25:07,999 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-11-28 05:25:08,000 INFO L435 NwaCegarLoop]: 179 mSDtfsCounter, 107 mSDsluCounter, 821 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 1000 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 05:25:08,000 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 1000 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 05:25:08,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2024-11-28 05:25:08,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 405. [2024-11-28 05:25:08,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 323 states have (on average 1.7275541795665634) internal successors, (558), 390 states have internal predecessors, (558), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-28 05:25:08,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 578 transitions. [2024-11-28 05:25:08,012 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 578 transitions. Word has length 22 [2024-11-28 05:25:08,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:25:08,013 INFO L471 AbstractCegarLoop]: Abstraction has 405 states and 578 transitions. [2024-11-28 05:25:08,013 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:25:08,013 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 578 transitions. [2024-11-28 05:25:08,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-28 05:25:08,014 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:25:08,014 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:25:08,024 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-28 05:25:08,214 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:25:08,215 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2024-11-28 05:25:08,215 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:25:08,215 INFO L85 PathProgramCache]: Analyzing trace with hash 2039400832, now seen corresponding path program 1 times [2024-11-28 05:25:08,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:25:08,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1810682926] [2024-11-28 05:25:08,215 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:25:08,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:25:08,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:25:08,218 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:25:08,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-28 05:25:08,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:25:08,302 INFO L256 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-28 05:25:08,304 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:25:08,860 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 05:25:08,860 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:25:08,861 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:25:08,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1810682926] [2024-11-28 05:25:08,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1810682926] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:25:08,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:25:08,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 05:25:08,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039501176] [2024-11-28 05:25:08,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:25:08,862 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 05:25:08,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:25:08,862 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 05:25:08,862 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-28 05:25:08,863 INFO L87 Difference]: Start difference. First operand 405 states and 578 transitions. Second operand has 8 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:25:10,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:25:10,060 INFO L93 Difference]: Finished difference Result 449 states and 604 transitions. [2024-11-28 05:25:10,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 05:25:10,061 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2024-11-28 05:25:10,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:25:10,063 INFO L225 Difference]: With dead ends: 449 [2024-11-28 05:25:10,063 INFO L226 Difference]: Without dead ends: 449 [2024-11-28 05:25:10,063 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2024-11-28 05:25:10,063 INFO L435 NwaCegarLoop]: 180 mSDtfsCounter, 91 mSDsluCounter, 973 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 1153 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-28 05:25:10,064 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 1153 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-28 05:25:10,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2024-11-28 05:25:10,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 399. [2024-11-28 05:25:10,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 317 states have (on average 1.725552050473186) internal successors, (547), 384 states have internal predecessors, (547), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-28 05:25:10,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 567 transitions. [2024-11-28 05:25:10,074 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 567 transitions. Word has length 23 [2024-11-28 05:25:10,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:25:10,074 INFO L471 AbstractCegarLoop]: Abstraction has 399 states and 567 transitions. [2024-11-28 05:25:10,074 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:25:10,075 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 567 transitions. [2024-11-28 05:25:10,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-28 05:25:10,075 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:25:10,075 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:25:10,087 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-28 05:25:10,276 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:25:10,276 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2024-11-28 05:25:10,276 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:25:10,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1537114374, now seen corresponding path program 1 times [2024-11-28 05:25:10,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:25:10,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1197816944] [2024-11-28 05:25:10,277 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:25:10,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:25:10,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:25:10,282 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:25:10,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-28 05:25:10,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:25:10,367 INFO L256 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 05:25:10,369 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:25:10,379 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 6 treesize of output 7 [2024-11-28 05:25:10,408 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 05:25:10,408 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:25:10,408 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:25:10,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1197816944] [2024-11-28 05:25:10,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1197816944] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:25:10,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:25:10,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 05:25:10,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70312316] [2024-11-28 05:25:10,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:25:10,409 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:25:10,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:25:10,409 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:25:10,409 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:25:10,409 INFO L87 Difference]: Start difference. First operand 399 states and 567 transitions. Second operand has 3 states, 2 states have (on average 11.0) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:25:10,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:25:10,627 INFO L93 Difference]: Finished difference Result 396 states and 558 transitions. [2024-11-28 05:25:10,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:25:10,628 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 11.0) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2024-11-28 05:25:10,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:25:10,629 INFO L225 Difference]: With dead ends: 396 [2024-11-28 05:25:10,629 INFO L226 Difference]: Without dead ends: 396 [2024-11-28 05:25:10,629 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 22 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 05:25:10,630 INFO L435 NwaCegarLoop]: 167 mSDtfsCounter, 32 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 05:25:10,630 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 258 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 05:25:10,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2024-11-28 05:25:10,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 396. [2024-11-28 05:25:10,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 317 states have (on average 1.6971608832807572) internal successors, (538), 381 states have internal predecessors, (538), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-28 05:25:10,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 558 transitions. [2024-11-28 05:25:10,643 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 558 transitions. Word has length 24 [2024-11-28 05:25:10,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:25:10,643 INFO L471 AbstractCegarLoop]: Abstraction has 396 states and 558 transitions. [2024-11-28 05:25:10,643 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 11.0) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:25:10,643 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 558 transitions. [2024-11-28 05:25:10,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-28 05:25:10,644 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:25:10,644 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:25:10,653 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-28 05:25:10,848 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:25:10,848 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2024-11-28 05:25:10,849 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:25:10,849 INFO L85 PathProgramCache]: Analyzing trace with hash -1537114373, now seen corresponding path program 1 times [2024-11-28 05:25:10,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:25:10,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1052657712] [2024-11-28 05:25:10,849 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:25:10,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:25:10,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:25:10,851 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:25:10,853 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-28 05:25:10,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:25:10,939 INFO L256 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 05:25:10,941 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:25:10,947 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-28 05:25:11,048 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 05:25:11,049 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:25:11,049 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:25:11,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1052657712] [2024-11-28 05:25:11,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1052657712] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:25:11,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:25:11,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:25:11,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441216859] [2024-11-28 05:25:11,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:25:11,049 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:25:11,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:25:11,050 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:25:11,050 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:25:11,050 INFO L87 Difference]: Start difference. First operand 396 states and 558 transitions. Second operand has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:25:11,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:25:11,446 INFO L93 Difference]: Finished difference Result 454 states and 637 transitions. [2024-11-28 05:25:11,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:25:11,447 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2024-11-28 05:25:11,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:25:11,448 INFO L225 Difference]: With dead ends: 454 [2024-11-28 05:25:11,448 INFO L226 Difference]: Without dead ends: 454 [2024-11-28 05:25:11,448 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 21 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 05:25:11,449 INFO L435 NwaCegarLoop]: 166 mSDtfsCounter, 59 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 05:25:11,449 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 392 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 05:25:11,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2024-11-28 05:25:11,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 445. [2024-11-28 05:25:11,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 367 states have (on average 1.681198910081744) internal successors, (617), 430 states have internal predecessors, (617), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-28 05:25:11,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 637 transitions. [2024-11-28 05:25:11,460 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 637 transitions. Word has length 24 [2024-11-28 05:25:11,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:25:11,461 INFO L471 AbstractCegarLoop]: Abstraction has 445 states and 637 transitions. [2024-11-28 05:25:11,461 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:25:11,461 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 637 transitions. [2024-11-28 05:25:11,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-28 05:25:11,461 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:25:11,462 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:25:11,471 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-28 05:25:11,662 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:25:11,662 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2024-11-28 05:25:11,662 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:25:11,663 INFO L85 PathProgramCache]: Analyzing trace with hash 742559774, now seen corresponding path program 1 times [2024-11-28 05:25:11,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:25:11,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1571769987] [2024-11-28 05:25:11,663 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:25:11,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:25:11,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:25:11,665 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:25:11,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-28 05:25:11,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:25:11,756 INFO L256 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 05:25:11,758 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:25:11,795 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 05:25:11,795 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:25:11,795 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:25:11,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1571769987] [2024-11-28 05:25:11,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1571769987] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:25:11,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:25:11,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 05:25:11,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203465843] [2024-11-28 05:25:11,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:25:11,795 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 05:25:11,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:25:11,796 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 05:25:11,796 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:25:11,796 INFO L87 Difference]: Start difference. First operand 445 states and 637 transitions. Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 5 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:25:11,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:25:11,834 INFO L93 Difference]: Finished difference Result 390 states and 540 transitions. [2024-11-28 05:25:11,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 05:25:11,835 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 5 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2024-11-28 05:25:11,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:25:11,836 INFO L225 Difference]: With dead ends: 390 [2024-11-28 05:25:11,836 INFO L226 Difference]: Without dead ends: 390 [2024-11-28 05:25:11,836 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-28 05:25:11,838 INFO L435 NwaCegarLoop]: 179 mSDtfsCounter, 49 mSDsluCounter, 660 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 839 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 05:25:11,838 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 839 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 05:25:11,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2024-11-28 05:25:11,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 390. [2024-11-28 05:25:11,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 313 states have (on average 1.6613418530351438) internal successors, (520), 375 states have internal predecessors, (520), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-28 05:25:11,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 540 transitions. [2024-11-28 05:25:11,849 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 540 transitions. Word has length 25 [2024-11-28 05:25:11,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:25:11,850 INFO L471 AbstractCegarLoop]: Abstraction has 390 states and 540 transitions. [2024-11-28 05:25:11,850 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 5 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:25:11,850 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 540 transitions. [2024-11-28 05:25:11,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-28 05:25:11,851 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:25:11,851 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:25:11,860 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-28 05:25:12,055 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:25:12,056 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr37REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2024-11-28 05:25:12,056 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:25:12,057 INFO L85 PathProgramCache]: Analyzing trace with hash 1366754475, now seen corresponding path program 1 times [2024-11-28 05:25:12,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:25:12,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2128323718] [2024-11-28 05:25:12,057 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:25:12,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:25:12,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:25:12,059 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:25:12,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-28 05:25:12,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:25:12,141 INFO L256 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 05:25:12,143 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:25:12,177 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 05:25:12,178 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:25:12,178 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:25:12,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2128323718] [2024-11-28 05:25:12,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2128323718] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:25:12,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:25:12,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:25:12,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080609888] [2024-11-28 05:25:12,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:25:12,178 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:25:12,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:25:12,179 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:25:12,179 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:25:12,179 INFO L87 Difference]: Start difference. First operand 390 states and 540 transitions. Second operand has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:25:12,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:25:12,464 INFO L93 Difference]: Finished difference Result 395 states and 539 transitions. [2024-11-28 05:25:12,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 05:25:12,465 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2024-11-28 05:25:12,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:25:12,466 INFO L225 Difference]: With dead ends: 395 [2024-11-28 05:25:12,466 INFO L226 Difference]: Without dead ends: 395 [2024-11-28 05:25:12,466 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 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 05:25:12,467 INFO L435 NwaCegarLoop]: 152 mSDtfsCounter, 36 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 05:25:12,467 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 385 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 05:25:12,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2024-11-28 05:25:12,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 389. [2024-11-28 05:25:12,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 318 states have (on average 1.6069182389937107) internal successors, (511), 374 states have internal predecessors, (511), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-28 05:25:12,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 531 transitions. [2024-11-28 05:25:12,477 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 531 transitions. Word has length 25 [2024-11-28 05:25:12,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:25:12,477 INFO L471 AbstractCegarLoop]: Abstraction has 389 states and 531 transitions. [2024-11-28 05:25:12,477 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:25:12,477 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 531 transitions. [2024-11-28 05:25:12,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-28 05:25:12,478 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:25:12,478 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:25:12,490 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-28 05:25:12,678 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:25:12,678 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2024-11-28 05:25:12,679 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:25:12,679 INFO L85 PathProgramCache]: Analyzing trace with hash 1366754476, now seen corresponding path program 1 times [2024-11-28 05:25:12,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:25:12,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [306117729] [2024-11-28 05:25:12,679 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:25:12,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:25:12,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:25:12,683 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:25:12,685 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-28 05:25:12,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:25:12,766 INFO L256 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 05:25:12,768 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:25:12,993 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 05:25:12,993 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:25:12,993 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:25:12,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [306117729] [2024-11-28 05:25:12,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [306117729] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:25:12,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:25:12,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 05:25:12,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267548692] [2024-11-28 05:25:12,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:25:12,994 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:25:12,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:25:12,994 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:25:12,994 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:25:12,994 INFO L87 Difference]: Start difference. First operand 389 states and 531 transitions. Second operand has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:25:13,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:25:13,515 INFO L93 Difference]: Finished difference Result 413 states and 529 transitions. [2024-11-28 05:25:13,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:25:13,516 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2024-11-28 05:25:13,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:25:13,517 INFO L225 Difference]: With dead ends: 413 [2024-11-28 05:25:13,517 INFO L226 Difference]: Without dead ends: 413 [2024-11-28 05:25:13,517 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 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 05:25:13,518 INFO L435 NwaCegarLoop]: 164 mSDtfsCounter, 100 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 404 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 05:25:13,518 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 404 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 05:25:13,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2024-11-28 05:25:13,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 389. [2024-11-28 05:25:13,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 318 states have (on average 1.5849056603773586) internal successors, (504), 374 states have internal predecessors, (504), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-28 05:25:13,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 524 transitions. [2024-11-28 05:25:13,527 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 524 transitions. Word has length 25 [2024-11-28 05:25:13,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:25:13,527 INFO L471 AbstractCegarLoop]: Abstraction has 389 states and 524 transitions. [2024-11-28 05:25:13,527 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:25:13,527 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 524 transitions. [2024-11-28 05:25:13,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-28 05:25:13,528 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:25:13,528 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:25:13,537 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-28 05:25:13,731 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:25:13,731 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2024-11-28 05:25:13,732 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:25:13,732 INFO L85 PathProgramCache]: Analyzing trace with hash 301839101, now seen corresponding path program 1 times [2024-11-28 05:25:13,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:25:13,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [642917567] [2024-11-28 05:25:13,732 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:25:13,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:25:13,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:25:13,736 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:25:13,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-28 05:25:13,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:25:13,836 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 05:25:13,838 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:25:13,847 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 6 treesize of output 5 [2024-11-28 05:25:13,971 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 05:25:13,971 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:25:13,971 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:25:13,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [642917567] [2024-11-28 05:25:13,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [642917567] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:25:13,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:25:13,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:25:13,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71796154] [2024-11-28 05:25:13,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:25:13,973 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:25:13,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:25:13,973 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:25:13,974 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:25:13,974 INFO L87 Difference]: Start difference. First operand 389 states and 524 transitions. Second operand has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:25:14,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:25:14,302 INFO L93 Difference]: Finished difference Result 388 states and 521 transitions. [2024-11-28 05:25:14,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:25:14,303 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2024-11-28 05:25:14,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:25:14,305 INFO L225 Difference]: With dead ends: 388 [2024-11-28 05:25:14,305 INFO L226 Difference]: Without dead ends: 388 [2024-11-28 05:25:14,305 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 23 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 05:25:14,305 INFO L435 NwaCegarLoop]: 158 mSDtfsCounter, 27 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 05:25:14,306 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 350 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 05:25:14,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2024-11-28 05:25:14,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 388. [2024-11-28 05:25:14,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 318 states have (on average 1.5754716981132075) internal successors, (501), 373 states have internal predecessors, (501), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-28 05:25:14,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 521 transitions. [2024-11-28 05:25:14,314 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 521 transitions. Word has length 26 [2024-11-28 05:25:14,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:25:14,314 INFO L471 AbstractCegarLoop]: Abstraction has 388 states and 521 transitions. [2024-11-28 05:25:14,315 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:25:14,315 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 521 transitions. [2024-11-28 05:25:14,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-28 05:25:14,315 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:25:14,315 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:25:14,327 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-28 05:25:14,519 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:25:14,520 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2024-11-28 05:25:14,520 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:25:14,520 INFO L85 PathProgramCache]: Analyzing trace with hash 301838907, now seen corresponding path program 1 times [2024-11-28 05:25:14,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:25:14,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [882439758] [2024-11-28 05:25:14,521 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:25:14,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:25:14,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:25:14,523 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:25:14,525 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-28 05:25:14,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:25:14,614 INFO L256 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 05:25:14,616 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:25:14,752 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 05:25:14,752 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:25:14,753 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:25:14,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [882439758] [2024-11-28 05:25:14,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [882439758] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:25:14,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:25:14,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 05:25:14,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061248135] [2024-11-28 05:25:14,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:25:14,754 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 05:25:14,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:25:14,754 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 05:25:14,754 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 05:25:14,754 INFO L87 Difference]: Start difference. First operand 388 states and 521 transitions. Second operand has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:25:15,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:25:15,332 INFO L93 Difference]: Finished difference Result 418 states and 555 transitions. [2024-11-28 05:25:15,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 05:25:15,333 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2024-11-28 05:25:15,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:25:15,335 INFO L225 Difference]: With dead ends: 418 [2024-11-28 05:25:15,335 INFO L226 Difference]: Without dead ends: 418 [2024-11-28 05:25:15,335 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-28 05:25:15,336 INFO L435 NwaCegarLoop]: 163 mSDtfsCounter, 10 mSDsluCounter, 696 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 859 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 05:25:15,336 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 859 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 05:25:15,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2024-11-28 05:25:15,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 415. [2024-11-28 05:25:15,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415 states, 345 states have (on average 1.5420289855072464) internal successors, (532), 400 states have internal predecessors, (532), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-28 05:25:15,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 552 transitions. [2024-11-28 05:25:15,345 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 552 transitions. Word has length 26 [2024-11-28 05:25:15,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:25:15,345 INFO L471 AbstractCegarLoop]: Abstraction has 415 states and 552 transitions. [2024-11-28 05:25:15,346 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:25:15,346 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 552 transitions. [2024-11-28 05:25:15,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-28 05:25:15,347 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:25:15,347 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:25:15,356 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-11-28 05:25:15,547 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:25:15,547 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr49REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2024-11-28 05:25:15,548 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:25:15,548 INFO L85 PathProgramCache]: Analyzing trace with hash 692783248, now seen corresponding path program 1 times [2024-11-28 05:25:15,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:25:15,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1619140884] [2024-11-28 05:25:15,548 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:25:15,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:25:15,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:25:15,550 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:25:15,557 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-28 05:25:15,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:25:15,638 INFO L256 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-28 05:25:15,639 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:25:15,951 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 05:25:15,952 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:25:15,952 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:25:15,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1619140884] [2024-11-28 05:25:15,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1619140884] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:25:15,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:25:15,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 05:25:15,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351197106] [2024-11-28 05:25:15,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:25:15,952 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 05:25:15,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:25:15,953 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 05:25:15,953 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:25:15,953 INFO L87 Difference]: Start difference. First operand 415 states and 552 transitions. Second operand has 6 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:25:16,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:25:16,593 INFO L93 Difference]: Finished difference Result 437 states and 555 transitions. [2024-11-28 05:25:16,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 05:25:16,593 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2024-11-28 05:25:16,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:25:16,595 INFO L225 Difference]: With dead ends: 437 [2024-11-28 05:25:16,595 INFO L226 Difference]: Without dead ends: 437 [2024-11-28 05:25:16,595 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-28 05:25:16,595 INFO L435 NwaCegarLoop]: 164 mSDtfsCounter, 94 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 643 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 05:25:16,596 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 643 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 05:25:16,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2024-11-28 05:25:16,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 415. [2024-11-28 05:25:16,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415 states, 345 states have (on average 1.536231884057971) internal successors, (530), 400 states have internal predecessors, (530), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-28 05:25:16,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 550 transitions. [2024-11-28 05:25:16,605 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 550 transitions. Word has length 28 [2024-11-28 05:25:16,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:25:16,605 INFO L471 AbstractCegarLoop]: Abstraction has 415 states and 550 transitions. [2024-11-28 05:25:16,605 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:25:16,605 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 550 transitions. [2024-11-28 05:25:16,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-28 05:25:16,606 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:25:16,606 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:25:16,615 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-28 05:25:16,806 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:25:16,806 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2024-11-28 05:25:16,807 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:25:16,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1421554, now seen corresponding path program 1 times [2024-11-28 05:25:16,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:25:16,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [561215839] [2024-11-28 05:25:16,807 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:25:16,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:25:16,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:25:16,809 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:25:16,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-28 05:25:16,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:25:16,899 INFO L256 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 05:25:16,900 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:25:16,978 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 05:25:16,978 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:25:16,978 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:25:16,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [561215839] [2024-11-28 05:25:16,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [561215839] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:25:16,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:25:16,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:25:16,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428037745] [2024-11-28 05:25:16,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:25:16,979 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 05:25:16,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:25:16,979 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 05:25:16,979 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:25:16,979 INFO L87 Difference]: Start difference. First operand 415 states and 550 transitions. Second operand has 5 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:25:17,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:25:17,351 INFO L93 Difference]: Finished difference Result 452 states and 579 transitions. [2024-11-28 05:25:17,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 05:25:17,355 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2024-11-28 05:25:17,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:25:17,357 INFO L225 Difference]: With dead ends: 452 [2024-11-28 05:25:17,357 INFO L226 Difference]: Without dead ends: 452 [2024-11-28 05:25:17,357 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-28 05:25:17,358 INFO L435 NwaCegarLoop]: 169 mSDtfsCounter, 87 mSDsluCounter, 453 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 622 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 05:25:17,358 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 622 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 05:25:17,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2024-11-28 05:25:17,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 415. [2024-11-28 05:25:17,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415 states, 345 states have (on average 1.5333333333333334) internal successors, (529), 400 states have internal predecessors, (529), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-28 05:25:17,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 549 transitions. [2024-11-28 05:25:17,366 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 549 transitions. Word has length 29 [2024-11-28 05:25:17,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:25:17,366 INFO L471 AbstractCegarLoop]: Abstraction has 415 states and 549 transitions. [2024-11-28 05:25:17,366 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:25:17,367 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 549 transitions. [2024-11-28 05:25:17,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-28 05:25:17,367 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:25:17,367 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:25:17,376 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-28 05:25:17,567 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:25:17,568 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr50REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2024-11-28 05:25:17,568 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:25:17,568 INFO L85 PathProgramCache]: Analyzing trace with hash 44776432, now seen corresponding path program 1 times [2024-11-28 05:25:17,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:25:17,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1078837506] [2024-11-28 05:25:17,568 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:25:17,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:25:17,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:25:17,572 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:25:17,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-28 05:25:17,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:25:17,666 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-28 05:25:17,668 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:25:17,846 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 05:25:17,846 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:25:17,846 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:25:17,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1078837506] [2024-11-28 05:25:17,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1078837506] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:25:17,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:25:17,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 05:25:17,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127448222] [2024-11-28 05:25:17,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:25:17,847 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 05:25:17,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:25:17,847 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 05:25:17,848 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 05:25:17,848 INFO L87 Difference]: Start difference. First operand 415 states and 549 transitions. Second operand has 8 states, 8 states have (on average 3.5) internal successors, (28), 7 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:25:18,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:25:18,371 INFO L93 Difference]: Finished difference Result 316 states and 403 transitions. [2024-11-28 05:25:18,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 05:25:18,371 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 7 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 30 [2024-11-28 05:25:18,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:25:18,372 INFO L225 Difference]: With dead ends: 316 [2024-11-28 05:25:18,372 INFO L226 Difference]: Without dead ends: 316 [2024-11-28 05:25:18,372 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2024-11-28 05:25:18,373 INFO L435 NwaCegarLoop]: 163 mSDtfsCounter, 36 mSDsluCounter, 923 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 1086 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 05:25:18,373 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 1086 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 05:25:18,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2024-11-28 05:25:18,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 312. [2024-11-28 05:25:18,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 248 states have (on average 1.560483870967742) internal successors, (387), 302 states have internal predecessors, (387), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-28 05:25:18,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 399 transitions. [2024-11-28 05:25:18,379 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 399 transitions. Word has length 30 [2024-11-28 05:25:18,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:25:18,380 INFO L471 AbstractCegarLoop]: Abstraction has 312 states and 399 transitions. [2024-11-28 05:25:18,380 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 7 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:25:18,380 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 399 transitions. [2024-11-28 05:25:18,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-28 05:25:18,380 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:25:18,380 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:25:18,390 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-11-28 05:25:18,584 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:25:18,584 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2024-11-28 05:25:18,585 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:25:18,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1472935255, now seen corresponding path program 1 times [2024-11-28 05:25:18,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:25:18,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1995022903] [2024-11-28 05:25:18,585 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:25:18,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:25:18,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:25:18,587 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:25:18,588 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-28 05:25:18,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:25:18,695 INFO L256 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 05:25:18,696 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:25:18,699 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 6 treesize of output 7 [2024-11-28 05:25:18,752 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 05:25:18,752 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:25:18,752 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:25:18,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1995022903] [2024-11-28 05:25:18,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1995022903] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:25:18,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:25:18,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 05:25:18,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209831874] [2024-11-28 05:25:18,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:25:18,752 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 05:25:18,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:25:18,753 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 05:25:18,753 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:25:18,753 INFO L87 Difference]: Start difference. First operand 312 states and 399 transitions. Second operand has 6 states, 5 states have (on average 6.4) internal successors, (32), 6 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:25:19,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:25:19,178 INFO L93 Difference]: Finished difference Result 313 states and 399 transitions. [2024-11-28 05:25:19,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 05:25:19,179 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 6 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 34 [2024-11-28 05:25:19,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:25:19,180 INFO L225 Difference]: With dead ends: 313 [2024-11-28 05:25:19,180 INFO L226 Difference]: Without dead ends: 313 [2024-11-28 05:25:19,180 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:25:19,181 INFO L435 NwaCegarLoop]: 143 mSDtfsCounter, 43 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 556 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 05:25:19,181 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 556 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 05:25:19,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2024-11-28 05:25:19,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 311. [2024-11-28 05:25:19,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 248 states have (on average 1.5524193548387097) internal successors, (385), 301 states have internal predecessors, (385), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-28 05:25:19,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 397 transitions. [2024-11-28 05:25:19,187 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 397 transitions. Word has length 34 [2024-11-28 05:25:19,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:25:19,187 INFO L471 AbstractCegarLoop]: Abstraction has 311 states and 397 transitions. [2024-11-28 05:25:19,188 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 6 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:25:19,188 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 397 transitions. [2024-11-28 05:25:19,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-28 05:25:19,188 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:25:19,188 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:25:19,198 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-28 05:25:19,389 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:25:19,389 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2024-11-28 05:25:19,389 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:25:19,389 INFO L85 PathProgramCache]: Analyzing trace with hash -1472935254, now seen corresponding path program 1 times [2024-11-28 05:25:19,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:25:19,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1588575085] [2024-11-28 05:25:19,390 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:25:19,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:25:19,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:25:19,391 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:25:19,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-28 05:25:19,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:25:19,500 INFO L256 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 05:25:19,501 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:25:19,508 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 6 treesize of output 5 [2024-11-28 05:25:19,645 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 05:25:19,645 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:25:19,645 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:25:19,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1588575085] [2024-11-28 05:25:19,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1588575085] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:25:19,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:25:19,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 05:25:19,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600425605] [2024-11-28 05:25:19,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:25:19,646 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 05:25:19,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:25:19,646 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 05:25:19,646 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:25:19,647 INFO L87 Difference]: Start difference. First operand 311 states and 397 transitions. Second operand has 6 states, 5 states have (on average 6.4) internal successors, (32), 6 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:25:20,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:25:20,164 INFO L93 Difference]: Finished difference Result 312 states and 397 transitions. [2024-11-28 05:25:20,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 05:25:20,164 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 6 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 34 [2024-11-28 05:25:20,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:25:20,165 INFO L225 Difference]: With dead ends: 312 [2024-11-28 05:25:20,165 INFO L226 Difference]: Without dead ends: 312 [2024-11-28 05:25:20,165 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:25:20,166 INFO L435 NwaCegarLoop]: 143 mSDtfsCounter, 43 mSDsluCounter, 433 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 576 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 05:25:20,166 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 576 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 05:25:20,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2024-11-28 05:25:20,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 310. [2024-11-28 05:25:20,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 248 states have (on average 1.5443548387096775) internal successors, (383), 300 states have internal predecessors, (383), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-28 05:25:20,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 395 transitions. [2024-11-28 05:25:20,172 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 395 transitions. Word has length 34 [2024-11-28 05:25:20,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:25:20,172 INFO L471 AbstractCegarLoop]: Abstraction has 310 states and 395 transitions. [2024-11-28 05:25:20,173 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 6 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:25:20,173 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 395 transitions. [2024-11-28 05:25:20,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-28 05:25:20,173 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:25:20,173 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:25:20,185 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-11-28 05:25:20,374 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:25:20,374 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2024-11-28 05:25:20,374 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:25:20,374 INFO L85 PathProgramCache]: Analyzing trace with hash 1848431274, now seen corresponding path program 1 times [2024-11-28 05:25:20,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:25:20,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [556872775] [2024-11-28 05:25:20,375 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:25:20,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:25:20,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:25:20,377 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:25:20,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-28 05:25:20,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:25:20,483 INFO L256 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 05:25:20,484 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:25:20,536 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 05:25:20,536 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:25:20,537 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:25:20,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [556872775] [2024-11-28 05:25:20,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [556872775] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:25:20,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:25:20,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:25:20,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610923851] [2024-11-28 05:25:20,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:25:20,537 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:25:20,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:25:20,538 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:25:20,538 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:25:20,539 INFO L87 Difference]: Start difference. First operand 310 states and 395 transitions. Second operand has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:25:20,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:25:20,841 INFO L93 Difference]: Finished difference Result 348 states and 439 transitions. [2024-11-28 05:25:20,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 05:25:20,842 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 36 [2024-11-28 05:25:20,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:25:20,844 INFO L225 Difference]: With dead ends: 348 [2024-11-28 05:25:20,844 INFO L226 Difference]: Without dead ends: 348 [2024-11-28 05:25:20,844 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 33 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 05:25:20,844 INFO L435 NwaCegarLoop]: 144 mSDtfsCounter, 82 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 05:25:20,844 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 356 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 05:25:20,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2024-11-28 05:25:20,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 338. [2024-11-28 05:25:20,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 279 states have (on average 1.5232974910394266) internal successors, (425), 328 states have internal predecessors, (425), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-28 05:25:20,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 437 transitions. [2024-11-28 05:25:20,850 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 437 transitions. Word has length 36 [2024-11-28 05:25:20,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:25:20,851 INFO L471 AbstractCegarLoop]: Abstraction has 338 states and 437 transitions. [2024-11-28 05:25:20,851 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:25:20,851 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 437 transitions. [2024-11-28 05:25:20,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-28 05:25:20,851 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:25:20,851 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:25:20,861 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2024-11-28 05:25:21,052 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:25:21,052 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2024-11-28 05:25:21,052 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:25:21,052 INFO L85 PathProgramCache]: Analyzing trace with hash 1848431275, now seen corresponding path program 1 times [2024-11-28 05:25:21,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:25:21,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1578032513] [2024-11-28 05:25:21,053 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:25:21,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:25:21,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:25:21,054 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:25:21,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-28 05:25:21,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:25:21,174 INFO L256 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-28 05:25:21,177 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:25:21,374 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 05:25:21,375 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:25:21,375 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:25:21,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1578032513] [2024-11-28 05:25:21,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1578032513] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:25:21,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:25:21,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 05:25:21,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674445722] [2024-11-28 05:25:21,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:25:21,375 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 05:25:21,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:25:21,376 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 05:25:21,376 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-28 05:25:21,376 INFO L87 Difference]: Start difference. First operand 338 states and 437 transitions. Second operand has 7 states, 6 states have (on average 5.666666666666667) internal successors, (34), 5 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:25:21,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:25:21,904 INFO L93 Difference]: Finished difference Result 347 states and 432 transitions. [2024-11-28 05:25:21,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 05:25:21,905 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.666666666666667) internal successors, (34), 5 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 36 [2024-11-28 05:25:21,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:25:21,906 INFO L225 Difference]: With dead ends: 347 [2024-11-28 05:25:21,906 INFO L226 Difference]: Without dead ends: 347 [2024-11-28 05:25:21,907 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-11-28 05:25:21,907 INFO L435 NwaCegarLoop]: 140 mSDtfsCounter, 272 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 619 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 05:25:21,907 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [273 Valid, 619 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 05:25:21,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2024-11-28 05:25:21,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 337. [2024-11-28 05:25:21,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 279 states have (on average 1.4982078853046594) internal successors, (418), 327 states have internal predecessors, (418), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-28 05:25:21,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 430 transitions. [2024-11-28 05:25:21,913 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 430 transitions. Word has length 36 [2024-11-28 05:25:21,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:25:21,913 INFO L471 AbstractCegarLoop]: Abstraction has 337 states and 430 transitions. [2024-11-28 05:25:21,913 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.666666666666667) internal successors, (34), 5 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:25:21,913 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 430 transitions. [2024-11-28 05:25:21,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-28 05:25:21,913 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:25:21,913 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:25:21,923 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-11-28 05:25:22,114 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:25:22,114 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2024-11-28 05:25:22,114 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:25:22,114 INFO L85 PathProgramCache]: Analyzing trace with hash 1848431436, now seen corresponding path program 1 times [2024-11-28 05:25:22,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:25:22,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1174365736] [2024-11-28 05:25:22,115 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:25:22,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:25:22,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:25:22,118 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:25:22,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-28 05:25:22,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:25:22,236 INFO L256 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-28 05:25:22,238 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:25:22,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:25:22,435 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-28 05:25:22,674 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 05:25:22,675 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:25:22,675 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:25:22,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1174365736] [2024-11-28 05:25:22,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1174365736] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:25:22,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:25:22,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 05:25:22,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988319147] [2024-11-28 05:25:22,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:25:22,675 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 05:25:22,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:25:22,676 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 05:25:22,676 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-28 05:25:22,676 INFO L87 Difference]: Start difference. First operand 337 states and 430 transitions. Second operand has 7 states, 6 states have (on average 5.666666666666667) internal successors, (34), 5 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:25:23,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:25:23,657 INFO L93 Difference]: Finished difference Result 414 states and 481 transitions. [2024-11-28 05:25:23,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 05:25:23,658 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.666666666666667) internal successors, (34), 5 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 36 [2024-11-28 05:25:23,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:25:23,660 INFO L225 Difference]: With dead ends: 414 [2024-11-28 05:25:23,660 INFO L226 Difference]: Without dead ends: 414 [2024-11-28 05:25:23,660 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-28 05:25:23,661 INFO L435 NwaCegarLoop]: 102 mSDtfsCounter, 237 mSDsluCounter, 449 mSDsCounter, 0 mSdLazyCounter, 426 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 551 SdHoareTripleChecker+Invalid, 428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-28 05:25:23,661 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 551 Invalid, 428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 426 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-28 05:25:23,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2024-11-28 05:25:23,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 337. [2024-11-28 05:25:23,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 279 states have (on average 1.4910394265232976) internal successors, (416), 327 states have internal predecessors, (416), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-28 05:25:23,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 428 transitions. [2024-11-28 05:25:23,667 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 428 transitions. Word has length 36 [2024-11-28 05:25:23,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:25:23,668 INFO L471 AbstractCegarLoop]: Abstraction has 337 states and 428 transitions. [2024-11-28 05:25:23,668 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.666666666666667) internal successors, (34), 5 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:25:23,668 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 428 transitions. [2024-11-28 05:25:23,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-28 05:25:23,668 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:25:23,669 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:25:23,678 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-11-28 05:25:23,869 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:25:23,869 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2024-11-28 05:25:23,870 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:25:23,870 INFO L85 PathProgramCache]: Analyzing trace with hash 1991178075, now seen corresponding path program 1 times [2024-11-28 05:25:23,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:25:23,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1901195463] [2024-11-28 05:25:23,870 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:25:23,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:25:23,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:25:23,874 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:25:23,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-28 05:25:24,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:25:24,003 INFO L256 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-28 05:25:24,005 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:25:24,264 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:25:24,264 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:25:24,264 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:25:24,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1901195463] [2024-11-28 05:25:24,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1901195463] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:25:24,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:25:24,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 05:25:24,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643280787] [2024-11-28 05:25:24,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:25:24,265 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 05:25:24,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:25:24,265 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 05:25:24,265 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:25:24,265 INFO L87 Difference]: Start difference. First operand 337 states and 428 transitions. Second operand has 6 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 05:25:24,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:25:24,669 INFO L93 Difference]: Finished difference Result 334 states and 423 transitions. [2024-11-28 05:25:24,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 05:25:24,669 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 50 [2024-11-28 05:25:24,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:25:24,670 INFO L225 Difference]: With dead ends: 334 [2024-11-28 05:25:24,670 INFO L226 Difference]: Without dead ends: 334 [2024-11-28 05:25:24,671 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-28 05:25:24,671 INFO L435 NwaCegarLoop]: 114 mSDtfsCounter, 315 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 05:25:24,671 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [315 Valid, 288 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 05:25:24,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2024-11-28 05:25:24,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 332. [2024-11-28 05:25:24,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 279 states have (on average 1.4659498207885304) internal successors, (409), 322 states have internal predecessors, (409), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-28 05:25:24,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 421 transitions. [2024-11-28 05:25:24,676 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 421 transitions. Word has length 50 [2024-11-28 05:25:24,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:25:24,677 INFO L471 AbstractCegarLoop]: Abstraction has 332 states and 421 transitions. [2024-11-28 05:25:24,677 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 05:25:24,677 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 421 transitions. [2024-11-28 05:25:24,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-28 05:25:24,677 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:25:24,677 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:25:24,689 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-11-28 05:25:24,878 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:25:24,878 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr60REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2024-11-28 05:25:24,878 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:25:24,879 INFO L85 PathProgramCache]: Analyzing trace with hash 652137668, now seen corresponding path program 1 times [2024-11-28 05:25:24,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:25:24,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1147000859] [2024-11-28 05:25:24,879 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:25:24,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:25:24,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:25:24,881 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:25:24,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-28 05:25:25,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:25:25,013 INFO L256 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 05:25:25,014 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:25:25,093 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 05:25:25,093 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:25:25,190 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 05:25:25,191 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:25:25,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1147000859] [2024-11-28 05:25:25,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1147000859] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:25:25,191 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 05:25:25,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2024-11-28 05:25:25,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646478618] [2024-11-28 05:25:25,191 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 05:25:25,191 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 05:25:25,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:25:25,192 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 05:25:25,192 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-28 05:25:25,192 INFO L87 Difference]: Start difference. First operand 332 states and 421 transitions. Second operand has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 05:25:25,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:25:25,256 INFO L93 Difference]: Finished difference Result 1176 states and 1487 transitions. [2024-11-28 05:25:25,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 05:25:25,256 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 51 [2024-11-28 05:25:25,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:25:25,260 INFO L225 Difference]: With dead ends: 1176 [2024-11-28 05:25:25,260 INFO L226 Difference]: Without dead ends: 1176 [2024-11-28 05:25:25,260 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-11-28 05:25:25,261 INFO L435 NwaCegarLoop]: 295 mSDtfsCounter, 810 mSDsluCounter, 974 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 815 SdHoareTripleChecker+Valid, 1269 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 05:25:25,261 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [815 Valid, 1269 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 05:25:25,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1176 states. [2024-11-28 05:25:25,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1176 to 768. [2024-11-28 05:25:25,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 768 states, 704 states have (on average 1.4559659090909092) internal successors, (1025), 747 states have internal predecessors, (1025), 17 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-28 05:25:25,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 768 states to 768 states and 1059 transitions. [2024-11-28 05:25:25,275 INFO L78 Accepts]: Start accepts. Automaton has 768 states and 1059 transitions. Word has length 51 [2024-11-28 05:25:25,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:25:25,276 INFO L471 AbstractCegarLoop]: Abstraction has 768 states and 1059 transitions. [2024-11-28 05:25:25,276 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 05:25:25,276 INFO L276 IsEmpty]: Start isEmpty. Operand 768 states and 1059 transitions. [2024-11-28 05:25:25,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-28 05:25:25,277 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:25:25,277 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:25:25,286 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2024-11-28 05:25:25,477 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:25:25,478 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr60REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2024-11-28 05:25:25,478 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:25:25,478 INFO L85 PathProgramCache]: Analyzing trace with hash 650290626, now seen corresponding path program 1 times [2024-11-28 05:25:25,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:25:25,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [856783233] [2024-11-28 05:25:25,478 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:25:25,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:25:25,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:25:25,480 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:25:25,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-28 05:25:25,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:25:25,611 INFO L256 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-28 05:25:25,613 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:25:25,911 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:25:25,911 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:25:25,911 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:25:25,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [856783233] [2024-11-28 05:25:25,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [856783233] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:25:25,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:25:25,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 05:25:25,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007563094] [2024-11-28 05:25:25,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:25:25,912 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 05:25:25,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:25:25,912 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 05:25:25,912 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:25:25,912 INFO L87 Difference]: Start difference. First operand 768 states and 1059 transitions. Second operand has 6 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:25:26,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:25:26,273 INFO L93 Difference]: Finished difference Result 776 states and 1067 transitions. [2024-11-28 05:25:26,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 05:25:26,274 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 51 [2024-11-28 05:25:26,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:25:26,276 INFO L225 Difference]: With dead ends: 776 [2024-11-28 05:25:26,276 INFO L226 Difference]: Without dead ends: 776 [2024-11-28 05:25:26,276 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-28 05:25:26,276 INFO L435 NwaCegarLoop]: 116 mSDtfsCounter, 302 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 05:25:26,277 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [302 Valid, 298 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 05:25:26,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 776 states. [2024-11-28 05:25:26,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 776 to 770. [2024-11-28 05:25:26,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 770 states, 706 states have (on average 1.4560906515580736) internal successors, (1028), 749 states have internal predecessors, (1028), 17 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-28 05:25:26,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 770 states to 770 states and 1062 transitions. [2024-11-28 05:25:26,293 INFO L78 Accepts]: Start accepts. Automaton has 770 states and 1062 transitions. Word has length 51 [2024-11-28 05:25:26,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:25:26,294 INFO L471 AbstractCegarLoop]: Abstraction has 770 states and 1062 transitions. [2024-11-28 05:25:26,294 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:25:26,294 INFO L276 IsEmpty]: Start isEmpty. Operand 770 states and 1062 transitions. [2024-11-28 05:25:26,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-28 05:25:26,295 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:25:26,295 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:25:26,305 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2024-11-28 05:25:26,495 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:25:26,495 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr60REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2024-11-28 05:25:26,496 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:25:26,496 INFO L85 PathProgramCache]: Analyzing trace with hash 650290688, now seen corresponding path program 1 times [2024-11-28 05:25:26,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:25:26,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [895417199] [2024-11-28 05:25:26,496 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:25:26,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:25:26,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:25:26,498 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:25:26,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-11-28 05:25:26,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:25:26,643 INFO L256 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 05:25:26,645 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:25:26,916 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:25:26,916 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:25:26,916 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:25:26,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [895417199] [2024-11-28 05:25:26,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [895417199] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:25:26,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:25:26,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 05:25:26,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958180557] [2024-11-28 05:25:26,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:25:26,917 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 05:25:26,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:25:26,917 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 05:25:26,917 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:25:26,917 INFO L87 Difference]: Start difference. First operand 770 states and 1062 transitions. Second operand has 6 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:25:27,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:25:27,287 INFO L93 Difference]: Finished difference Result 775 states and 1065 transitions. [2024-11-28 05:25:27,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 05:25:27,287 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 51 [2024-11-28 05:25:27,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:25:27,289 INFO L225 Difference]: With dead ends: 775 [2024-11-28 05:25:27,289 INFO L226 Difference]: Without dead ends: 775 [2024-11-28 05:25:27,289 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-28 05:25:27,289 INFO L435 NwaCegarLoop]: 116 mSDtfsCounter, 182 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 05:25:27,290 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 298 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 05:25:27,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 775 states. [2024-11-28 05:25:27,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 775 to 767. [2024-11-28 05:25:27,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 767 states, 704 states have (on average 1.453125) internal successors, (1023), 746 states have internal predecessors, (1023), 17 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-28 05:25:27,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 767 states to 767 states and 1057 transitions. [2024-11-28 05:25:27,306 INFO L78 Accepts]: Start accepts. Automaton has 767 states and 1057 transitions. Word has length 51 [2024-11-28 05:25:27,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:25:27,307 INFO L471 AbstractCegarLoop]: Abstraction has 767 states and 1057 transitions. [2024-11-28 05:25:27,307 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:25:27,307 INFO L276 IsEmpty]: Start isEmpty. Operand 767 states and 1057 transitions. [2024-11-28 05:25:27,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-28 05:25:27,308 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:25:27,308 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:25:27,319 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2024-11-28 05:25:27,509 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:25:27,509 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2024-11-28 05:25:27,510 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:25:27,510 INFO L85 PathProgramCache]: Analyzing trace with hash 909576006, now seen corresponding path program 1 times [2024-11-28 05:25:27,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:25:27,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [229580865] [2024-11-28 05:25:27,510 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:25:27,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:25:27,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:25:27,512 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:25:27,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-11-28 05:25:27,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:25:27,662 INFO L256 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-28 05:25:27,666 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:25:27,925 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 05:25:28,095 INFO L349 Elim1Store]: treesize reduction 36, result has 35.7 percent of original size [2024-11-28 05:25:28,096 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 28 [2024-11-28 05:25:28,160 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 19 treesize of output 11 [2024-11-28 05:25:28,178 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:25:28,178 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:25:28,365 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:25:28,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [229580865] [2024-11-28 05:25:28,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [229580865] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:25:28,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1405777462] [2024-11-28 05:25:28,365 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:25:28,365 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-28 05:25:28,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 [2024-11-28 05:25:28,369 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-28 05:25:28,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (35)] Waiting until timeout for monitored process [2024-11-28 05:25:28,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:25:28,778 INFO L256 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-11-28 05:25:28,782 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:25:29,444 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-28 05:25:29,444 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 15 [2024-11-28 05:25:29,481 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-28 05:25:29,481 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 15 [2024-11-28 05:25:29,635 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-28 05:25:29,635 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 19 [2024-11-28 05:25:29,683 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-28 05:25:29,683 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 19 [2024-11-28 05:25:29,806 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-28 05:25:29,806 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 19 [2024-11-28 05:25:29,836 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-28 05:25:29,836 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 19 [2024-11-28 05:25:30,016 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2024-11-28 05:25:30,033 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2024-11-28 05:25:30,205 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 23 treesize of output 15 [2024-11-28 05:25:30,676 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:25:30,676 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:25:30,757 INFO L349 Elim1Store]: treesize reduction 7, result has 50.0 percent of original size [2024-11-28 05:25:30,757 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 20 treesize of output 19 [2024-11-28 05:25:32,242 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv4 32) |c_ULTIMATE.start_append_one_~list#1.offset|))) (and (forall ((|ULTIMATE.start_create_item_~item~0#1.base| (_ BitVec 32))) (or (forall ((v_ArrVal_334 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |ULTIMATE.start_create_item_~item~0#1.base| v_ArrVal_334))) (store .cse0 |c_ULTIMATE.start_create_item_~cursor#1.base| (store (select .cse0 |c_ULTIMATE.start_create_item_~cursor#1.base|) |c_ULTIMATE.start_create_item_~cursor#1.offset| |ULTIMATE.start_create_item_~item~0#1.base|))) |c_~#list~0.base|) |c_~#list~0.offset|) |c_~#list~0.base|)) (forall ((v_ArrVal_333 (Array (_ BitVec 32) (_ BitVec 32))) (|ULTIMATE.start_create_item_~head~0#1.offset| (_ BitVec 32))) (= (_ bv0 32) (select (select (let ((.cse1 (store |c_#memory_$Pointer$#1.offset| |ULTIMATE.start_create_item_~item~0#1.base| v_ArrVal_333))) (store .cse1 |c_ULTIMATE.start_create_item_~cursor#1.base| (store (select .cse1 |c_ULTIMATE.start_create_item_~cursor#1.base|) |c_ULTIMATE.start_create_item_~cursor#1.offset| |ULTIMATE.start_create_item_~head~0#1.offset|))) |c_ULTIMATE.start_append_one_~list#1.base|) .cse2))))) (forall ((v_ArrVal_334 (Array (_ BitVec 32) (_ BitVec 32))) (|ULTIMATE.start_create_item_~item~0#1.base| (_ BitVec 32))) (let ((.cse3 (let ((.cse4 (store |c_#memory_$Pointer$#1.base| |ULTIMATE.start_create_item_~item~0#1.base| v_ArrVal_334))) (store .cse4 |c_ULTIMATE.start_create_item_~cursor#1.base| (store (select .cse4 |c_ULTIMATE.start_create_item_~cursor#1.base|) |c_ULTIMATE.start_create_item_~cursor#1.offset| |ULTIMATE.start_create_item_~item~0#1.base|))))) (or (= (select (select .cse3 |c_~#list~0.base|) |c_~#list~0.offset|) |c_~#list~0.base|) (= (_ bv0 32) (select (select .cse3 |c_ULTIMATE.start_append_one_~list#1.base|) .cse2))))))) is different from false [2024-11-28 05:25:32,818 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv4 32) |c_~#list~0.offset|)) (.cse0 (bvadd (bvmul (_ bv4 32) |c_ULTIMATE.start_main_#t~ret30#1|) |c_~#list~0.offset|))) (and (forall ((|ULTIMATE.start_create_item_~item~0#1.base| (_ BitVec 32))) (or (forall ((v_ArrVal_334 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_~#list~0.base| (select (store (select (store |c_#memory_$Pointer$#1.base| |ULTIMATE.start_create_item_~item~0#1.base| v_ArrVal_334) |c_~#list~0.base|) .cse0 |ULTIMATE.start_create_item_~item~0#1.base|) |c_~#list~0.offset|))) (forall ((v_ArrVal_333 (Array (_ BitVec 32) (_ BitVec 32))) (|ULTIMATE.start_create_item_~head~0#1.offset| (_ BitVec 32))) (= (select (store (select (store |c_#memory_$Pointer$#1.offset| |ULTIMATE.start_create_item_~item~0#1.base| v_ArrVal_333) |c_~#list~0.base|) .cse0 |ULTIMATE.start_create_item_~head~0#1.offset|) .cse1) (_ bv0 32))))) (forall ((v_ArrVal_334 (Array (_ BitVec 32) (_ BitVec 32))) (|ULTIMATE.start_create_item_~item~0#1.base| (_ BitVec 32))) (let ((.cse2 (store (select (store |c_#memory_$Pointer$#1.base| |ULTIMATE.start_create_item_~item~0#1.base| v_ArrVal_334) |c_~#list~0.base|) .cse0 |ULTIMATE.start_create_item_~item~0#1.base|))) (or (= |c_~#list~0.base| (select .cse2 |c_~#list~0.offset|)) (= (_ bv0 32) (select .cse2 .cse1))))))) is different from false [2024-11-28 05:25:33,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1405777462] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:25:33,032 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 05:25:33,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 14] total 25 [2024-11-28 05:25:33,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696078330] [2024-11-28 05:25:33,032 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 05:25:33,032 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-28 05:25:33,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:25:33,033 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-28 05:25:33,033 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=1463, Unknown=17, NotChecked=158, Total=1806 [2024-11-28 05:25:33,033 INFO L87 Difference]: Start difference. First operand 767 states and 1057 transitions. Second operand has 27 states, 26 states have (on average 3.923076923076923) internal successors, (102), 22 states have internal predecessors, (102), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-28 05:25:35,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:25:35,942 INFO L93 Difference]: Finished difference Result 1787 states and 2457 transitions. [2024-11-28 05:25:35,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-28 05:25:35,942 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 3.923076923076923) internal successors, (102), 22 states have internal predecessors, (102), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 55 [2024-11-28 05:25:35,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:25:35,946 INFO L225 Difference]: With dead ends: 1787 [2024-11-28 05:25:35,946 INFO L226 Difference]: Without dead ends: 1787 [2024-11-28 05:25:35,946 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 839 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=363, Invalid=2708, Unknown=17, NotChecked=218, Total=3306 [2024-11-28 05:25:35,947 INFO L435 NwaCegarLoop]: 149 mSDtfsCounter, 770 mSDsluCounter, 1856 mSDsCounter, 0 mSdLazyCounter, 1149 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 774 SdHoareTripleChecker+Valid, 2005 SdHoareTripleChecker+Invalid, 1166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-28 05:25:35,947 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [774 Valid, 2005 Invalid, 1166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1149 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-28 05:25:35,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1787 states. [2024-11-28 05:25:35,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1787 to 1220. [2024-11-28 05:25:35,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1220 states, 1132 states have (on average 1.4257950530035335) internal successors, (1614), 1179 states have internal predecessors, (1614), 38 states have call successors, (38), 7 states have call predecessors, (38), 7 states have return successors, (38), 33 states have call predecessors, (38), 38 states have call successors, (38) [2024-11-28 05:25:35,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1220 states to 1220 states and 1690 transitions. [2024-11-28 05:25:35,968 INFO L78 Accepts]: Start accepts. Automaton has 1220 states and 1690 transitions. Word has length 55 [2024-11-28 05:25:35,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:25:35,969 INFO L471 AbstractCegarLoop]: Abstraction has 1220 states and 1690 transitions. [2024-11-28 05:25:35,969 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 3.923076923076923) internal successors, (102), 22 states have internal predecessors, (102), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-28 05:25:35,969 INFO L276 IsEmpty]: Start isEmpty. Operand 1220 states and 1690 transitions. [2024-11-28 05:25:35,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-28 05:25:35,970 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:25:35,970 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:25:35,975 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (35)] Ended with exit code 0 [2024-11-28 05:25:36,177 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2024-11-28 05:25:36,371 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:25:36,371 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2024-11-28 05:25:36,371 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:25:36,371 INFO L85 PathProgramCache]: Analyzing trace with hash 909576007, now seen corresponding path program 1 times [2024-11-28 05:25:36,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:25:36,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [574759147] [2024-11-28 05:25:36,372 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:25:36,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:25:36,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:25:36,373 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:25:36,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-11-28 05:25:36,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:25:36,526 INFO L256 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-28 05:25:36,530 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:25:36,825 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 05:25:36,825 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 13 treesize of output 13 [2024-11-28 05:25:37,074 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-28 05:25:37,087 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-28 05:25:37,130 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-28 05:25:37,142 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-28 05:25:37,182 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-28 05:25:37,189 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-28 05:25:37,263 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-28 05:25:37,269 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-28 05:25:37,359 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:25:37,359 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:25:37,359 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:25:37,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [574759147] [2024-11-28 05:25:37,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [574759147] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:25:37,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:25:37,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-28 05:25:37,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312965068] [2024-11-28 05:25:37,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:25:37,359 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 05:25:37,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:25:37,360 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 05:25:37,360 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-11-28 05:25:37,360 INFO L87 Difference]: Start difference. First operand 1220 states and 1690 transitions. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 7 states have internal predecessors, (51), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 05:25:38,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:25:38,110 INFO L93 Difference]: Finished difference Result 1037 states and 1404 transitions. [2024-11-28 05:25:38,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 05:25:38,111 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 7 states have internal predecessors, (51), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 55 [2024-11-28 05:25:38,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:25:38,113 INFO L225 Difference]: With dead ends: 1037 [2024-11-28 05:25:38,113 INFO L226 Difference]: Without dead ends: 1037 [2024-11-28 05:25:38,113 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2024-11-28 05:25:38,114 INFO L435 NwaCegarLoop]: 145 mSDtfsCounter, 45 mSDsluCounter, 568 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 713 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 05:25:38,114 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 713 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 05:25:38,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1037 states. [2024-11-28 05:25:38,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1037 to 1034. [2024-11-28 05:25:38,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1034 states, 959 states have (on average 1.4045881126173096) internal successors, (1347), 1001 states have internal predecessors, (1347), 27 states have call successors, (27), 5 states have call predecessors, (27), 5 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2024-11-28 05:25:38,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1034 states to 1034 states and 1401 transitions. [2024-11-28 05:25:38,127 INFO L78 Accepts]: Start accepts. Automaton has 1034 states and 1401 transitions. Word has length 55 [2024-11-28 05:25:38,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:25:38,127 INFO L471 AbstractCegarLoop]: Abstraction has 1034 states and 1401 transitions. [2024-11-28 05:25:38,127 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 7 states have internal predecessors, (51), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 05:25:38,127 INFO L276 IsEmpty]: Start isEmpty. Operand 1034 states and 1401 transitions. [2024-11-28 05:25:38,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-28 05:25:38,128 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:25:38,129 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:25:38,140 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2024-11-28 05:25:38,329 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:25:38,329 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2024-11-28 05:25:38,329 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:25:38,330 INFO L85 PathProgramCache]: Analyzing trace with hash 2048665595, now seen corresponding path program 1 times [2024-11-28 05:25:38,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:25:38,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1713765461] [2024-11-28 05:25:38,330 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:25:38,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:25:38,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:25:38,332 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:25:38,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-11-28 05:25:38,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:25:38,492 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-28 05:25:38,495 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:25:38,559 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 05:25:38,560 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 13 treesize of output 13 [2024-11-28 05:25:38,761 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 11 treesize of output 7 [2024-11-28 05:25:38,769 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 11 treesize of output 7 [2024-11-28 05:25:38,815 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-28 05:25:38,821 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-28 05:25:38,882 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-28 05:25:38,888 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-28 05:25:39,010 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:25:39,010 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:25:39,010 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:25:39,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1713765461] [2024-11-28 05:25:39,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1713765461] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:25:39,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:25:39,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-28 05:25:39,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924969705] [2024-11-28 05:25:39,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:25:39,011 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 05:25:39,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:25:39,011 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 05:25:39,011 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-28 05:25:39,011 INFO L87 Difference]: Start difference. First operand 1034 states and 1401 transitions. Second operand has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 11 states have internal predecessors, (52), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 05:25:40,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:25:40,396 INFO L93 Difference]: Finished difference Result 1151 states and 1530 transitions. [2024-11-28 05:25:40,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 05:25:40,397 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 11 states have internal predecessors, (52), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 56 [2024-11-28 05:25:40,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:25:40,399 INFO L225 Difference]: With dead ends: 1151 [2024-11-28 05:25:40,399 INFO L226 Difference]: Without dead ends: 1151 [2024-11-28 05:25:40,400 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2024-11-28 05:25:40,400 INFO L435 NwaCegarLoop]: 109 mSDtfsCounter, 192 mSDsluCounter, 851 mSDsCounter, 0 mSdLazyCounter, 529 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 960 SdHoareTripleChecker+Invalid, 530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-28 05:25:40,400 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 960 Invalid, 530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 529 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-28 05:25:40,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1151 states. [2024-11-28 05:25:40,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1151 to 1040. [2024-11-28 05:25:40,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1040 states, 965 states have (on average 1.3989637305699483) internal successors, (1350), 1007 states have internal predecessors, (1350), 27 states have call successors, (27), 5 states have call predecessors, (27), 5 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2024-11-28 05:25:40,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1040 states to 1040 states and 1404 transitions. [2024-11-28 05:25:40,413 INFO L78 Accepts]: Start accepts. Automaton has 1040 states and 1404 transitions. Word has length 56 [2024-11-28 05:25:40,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:25:40,413 INFO L471 AbstractCegarLoop]: Abstraction has 1040 states and 1404 transitions. [2024-11-28 05:25:40,413 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 11 states have internal predecessors, (52), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 05:25:40,413 INFO L276 IsEmpty]: Start isEmpty. Operand 1040 states and 1404 transitions. [2024-11-28 05:25:40,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-28 05:25:40,414 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:25:40,414 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:25:40,425 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2024-11-28 05:25:40,614 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:25:40,615 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2024-11-28 05:25:40,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:25:40,615 INFO L85 PathProgramCache]: Analyzing trace with hash 2018201022, now seen corresponding path program 1 times [2024-11-28 05:25:40,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:25:40,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [966655963] [2024-11-28 05:25:40,615 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:25:40,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:25:40,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:25:40,617 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:25:40,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-11-28 05:25:40,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:25:40,786 INFO L256 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-28 05:25:40,790 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:25:40,815 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 6 treesize of output 7 [2024-11-28 05:25:41,134 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 05:25:41,185 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2024-11-28 05:25:41,329 INFO L349 Elim1Store]: treesize reduction 36, result has 35.7 percent of original size [2024-11-28 05:25:41,329 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 28 [2024-11-28 05:25:41,396 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 19 treesize of output 11 [2024-11-28 05:25:41,414 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:25:41,414 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:25:41,573 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:25:41,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [966655963] [2024-11-28 05:25:41,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [966655963] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:25:41,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [925084944] [2024-11-28 05:25:41,573 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:25:41,573 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-28 05:25:41,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 [2024-11-28 05:25:41,575 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-28 05:25:41,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (39)] Waiting until timeout for monitored process [2024-11-28 05:25:41,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:25:41,975 INFO L256 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-28 05:25:41,978 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:25:42,197 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-28 05:25:42,197 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2024-11-28 05:25:42,781 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 05:25:42,901 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2024-11-28 05:25:43,198 INFO L349 Elim1Store]: treesize reduction 74, result has 29.5 percent of original size [2024-11-28 05:25:43,198 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 32 treesize of output 44 [2024-11-28 05:25:43,315 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 19 treesize of output 11 [2024-11-28 05:25:43,348 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:25:43,348 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:25:43,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [925084944] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:25:43,439 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 05:25:43,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13] total 24 [2024-11-28 05:25:43,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110170111] [2024-11-28 05:25:43,439 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 05:25:43,440 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-28 05:25:43,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:25:43,440 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-28 05:25:43,440 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=695, Unknown=0, NotChecked=0, Total=812 [2024-11-28 05:25:43,440 INFO L87 Difference]: Start difference. First operand 1040 states and 1404 transitions. Second operand has 26 states, 25 states have (on average 4.24) internal successors, (106), 22 states have internal predecessors, (106), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-28 05:25:45,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:25:45,909 INFO L93 Difference]: Finished difference Result 1637 states and 2189 transitions. [2024-11-28 05:25:45,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-28 05:25:45,910 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 4.24) internal successors, (106), 22 states have internal predecessors, (106), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 57 [2024-11-28 05:25:45,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:25:45,913 INFO L225 Difference]: With dead ends: 1637 [2024-11-28 05:25:45,914 INFO L226 Difference]: Without dead ends: 1637 [2024-11-28 05:25:45,914 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 106 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 316 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=215, Invalid=1117, Unknown=0, NotChecked=0, Total=1332 [2024-11-28 05:25:45,915 INFO L435 NwaCegarLoop]: 147 mSDtfsCounter, 928 mSDsluCounter, 2118 mSDsCounter, 0 mSdLazyCounter, 1286 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 931 SdHoareTripleChecker+Valid, 2265 SdHoareTripleChecker+Invalid, 1294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-28 05:25:45,915 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [931 Valid, 2265 Invalid, 1294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1286 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-28 05:25:45,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1637 states. [2024-11-28 05:25:45,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1637 to 1055. [2024-11-28 05:25:45,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1055 states, 980 states have (on average 1.3979591836734695) internal successors, (1370), 1022 states have internal predecessors, (1370), 27 states have call successors, (27), 5 states have call predecessors, (27), 5 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2024-11-28 05:25:45,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1055 states to 1055 states and 1424 transitions. [2024-11-28 05:25:45,931 INFO L78 Accepts]: Start accepts. Automaton has 1055 states and 1424 transitions. Word has length 57 [2024-11-28 05:25:45,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:25:45,931 INFO L471 AbstractCegarLoop]: Abstraction has 1055 states and 1424 transitions. [2024-11-28 05:25:45,932 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 4.24) internal successors, (106), 22 states have internal predecessors, (106), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-28 05:25:45,932 INFO L276 IsEmpty]: Start isEmpty. Operand 1055 states and 1424 transitions. [2024-11-28 05:25:45,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-28 05:25:45,933 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:25:45,933 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:25:45,943 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2024-11-28 05:25:46,138 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (39)] Ended with exit code 0 [2024-11-28 05:25:46,333 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt [2024-11-28 05:25:46,334 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2024-11-28 05:25:46,335 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:25:46,335 INFO L85 PathProgramCache]: Analyzing trace with hash 2018201023, now seen corresponding path program 1 times [2024-11-28 05:25:46,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:25:46,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [775362189] [2024-11-28 05:25:46,336 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:25:46,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:25:46,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:25:46,338 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:25:46,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2024-11-28 05:25:46,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:25:46,541 INFO L256 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-28 05:25:46,546 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:25:46,577 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 6 treesize of output 5 [2024-11-28 05:25:46,588 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 6 treesize of output 7 [2024-11-28 05:25:47,118 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 05:25:47,127 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 05:25:47,213 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 20 [2024-11-28 05:25:47,224 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-28 05:25:47,452 INFO L349 Elim1Store]: treesize reduction 6, result has 57.1 percent of original size [2024-11-28 05:25:47,452 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2024-11-28 05:25:47,459 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-28 05:25:47,611 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 17 treesize of output 9 [2024-11-28 05:25:47,643 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:25:47,643 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:25:48,182 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:25:48,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [775362189] [2024-11-28 05:25:48,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [775362189] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:25:48,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1306498625] [2024-11-28 05:25:48,182 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:25:48,182 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-28 05:25:48,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 [2024-11-28 05:25:48,184 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-28 05:25:48,185 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (41)] Waiting until timeout for monitored process [2024-11-28 05:25:48,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:25:48,646 INFO L256 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-11-28 05:25:48,650 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:25:48,825 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 6 treesize of output 5 [2024-11-28 05:25:48,833 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 6 treesize of output 7 [2024-11-28 05:25:49,587 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 05:25:49,598 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 05:25:49,721 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-28 05:25:49,728 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 20 [2024-11-28 05:25:50,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:25:50,103 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-28 05:25:50,117 INFO L349 Elim1Store]: treesize reduction 6, result has 57.1 percent of original size [2024-11-28 05:25:50,117 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2024-11-28 05:25:50,348 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 17 treesize of output 9 [2024-11-28 05:25:50,355 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:25:50,355 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:25:50,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1306498625] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:25:50,599 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 05:25:50,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14] total 25 [2024-11-28 05:25:50,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281521491] [2024-11-28 05:25:50,599 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 05:25:50,600 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-28 05:25:50,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:25:50,600 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-28 05:25:50,600 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=861, Unknown=0, NotChecked=0, Total=992 [2024-11-28 05:25:50,600 INFO L87 Difference]: Start difference. First operand 1055 states and 1424 transitions. Second operand has 27 states, 26 states have (on average 4.038461538461538) internal successors, (105), 23 states have internal predecessors, (105), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-28 05:25:53,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:25:53,773 INFO L93 Difference]: Finished difference Result 1496 states and 2035 transitions. [2024-11-28 05:25:53,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-28 05:25:53,773 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 4.038461538461538) internal successors, (105), 23 states have internal predecessors, (105), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 57 [2024-11-28 05:25:53,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:25:53,776 INFO L225 Difference]: With dead ends: 1496 [2024-11-28 05:25:53,776 INFO L226 Difference]: Without dead ends: 1496 [2024-11-28 05:25:53,777 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 103 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 339 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=209, Invalid=1123, Unknown=0, NotChecked=0, Total=1332 [2024-11-28 05:25:53,777 INFO L435 NwaCegarLoop]: 139 mSDtfsCounter, 622 mSDsluCounter, 1911 mSDsCounter, 0 mSdLazyCounter, 1612 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 624 SdHoareTripleChecker+Valid, 2050 SdHoareTripleChecker+Invalid, 1620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-28 05:25:53,777 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [624 Valid, 2050 Invalid, 1620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1612 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-28 05:25:53,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1496 states. [2024-11-28 05:25:53,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1496 to 1229. [2024-11-28 05:25:53,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1229 states, 1142 states have (on average 1.3861646234676006) internal successors, (1583), 1184 states have internal predecessors, (1583), 37 states have call successors, (37), 7 states have call predecessors, (37), 7 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2024-11-28 05:25:53,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1229 states to 1229 states and 1657 transitions. [2024-11-28 05:25:53,792 INFO L78 Accepts]: Start accepts. Automaton has 1229 states and 1657 transitions. Word has length 57 [2024-11-28 05:25:53,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:25:53,792 INFO L471 AbstractCegarLoop]: Abstraction has 1229 states and 1657 transitions. [2024-11-28 05:25:53,792 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 4.038461538461538) internal successors, (105), 23 states have internal predecessors, (105), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-28 05:25:53,792 INFO L276 IsEmpty]: Start isEmpty. Operand 1229 states and 1657 transitions. [2024-11-28 05:25:53,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-28 05:25:53,793 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:25:53,793 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:25:53,800 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2024-11-28 05:25:53,997 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (41)] Forceful destruction successful, exit code 0 [2024-11-28 05:25:54,194 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt [2024-11-28 05:25:54,194 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2024-11-28 05:25:54,194 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:25:54,194 INFO L85 PathProgramCache]: Analyzing trace with hash 1156050574, now seen corresponding path program 1 times [2024-11-28 05:25:54,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:25:54,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [309516329] [2024-11-28 05:25:54,195 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:25:54,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:25:54,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:25:54,197 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:25:54,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2024-11-28 05:25:54,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:25:54,369 INFO L256 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-28 05:25:54,371 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:25:54,398 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 6 treesize of output 7 [2024-11-28 05:25:54,712 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 05:25:54,768 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2024-11-28 05:25:54,871 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 19 treesize of output 11 [2024-11-28 05:25:54,897 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:25:54,898 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:25:54,898 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:25:54,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [309516329] [2024-11-28 05:25:54,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [309516329] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:25:54,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:25:54,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-28 05:25:54,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340544169] [2024-11-28 05:25:54,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:25:54,898 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 05:25:54,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:25:54,899 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 05:25:54,899 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-11-28 05:25:54,899 INFO L87 Difference]: Start difference. First operand 1229 states and 1657 transitions. Second operand has 12 states, 11 states have (on average 4.909090909090909) internal successors, (54), 11 states have internal predecessors, (54), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:25:56,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:25:56,193 INFO L93 Difference]: Finished difference Result 1471 states and 1998 transitions. [2024-11-28 05:25:56,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 05:25:56,193 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.909090909090909) internal successors, (54), 11 states have internal predecessors, (54), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 56 [2024-11-28 05:25:56,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:25:56,197 INFO L225 Difference]: With dead ends: 1471 [2024-11-28 05:25:56,197 INFO L226 Difference]: Without dead ends: 1471 [2024-11-28 05:25:56,198 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2024-11-28 05:25:56,198 INFO L435 NwaCegarLoop]: 150 mSDtfsCounter, 307 mSDsluCounter, 1010 mSDsCounter, 0 mSdLazyCounter, 682 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 1160 SdHoareTripleChecker+Invalid, 688 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 682 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-28 05:25:56,198 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [307 Valid, 1160 Invalid, 688 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 682 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-28 05:25:56,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1471 states. [2024-11-28 05:25:56,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1471 to 1237. [2024-11-28 05:25:56,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1237 states, 1151 states have (on average 1.3866203301476976) internal successors, (1596), 1192 states have internal predecessors, (1596), 37 states have call successors, (37), 7 states have call predecessors, (37), 7 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2024-11-28 05:25:56,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1237 states to 1237 states and 1670 transitions. [2024-11-28 05:25:56,213 INFO L78 Accepts]: Start accepts. Automaton has 1237 states and 1670 transitions. Word has length 56 [2024-11-28 05:25:56,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:25:56,213 INFO L471 AbstractCegarLoop]: Abstraction has 1237 states and 1670 transitions. [2024-11-28 05:25:56,213 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.909090909090909) internal successors, (54), 11 states have internal predecessors, (54), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:25:56,213 INFO L276 IsEmpty]: Start isEmpty. Operand 1237 states and 1670 transitions. [2024-11-28 05:25:56,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-28 05:25:56,214 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:25:56,214 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:25:56,225 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2024-11-28 05:25:56,414 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:25:56,414 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr62REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2024-11-28 05:25:56,415 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:25:56,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1156050575, now seen corresponding path program 1 times [2024-11-28 05:25:56,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:25:56,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [137998373] [2024-11-28 05:25:56,415 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:25:56,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:25:56,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:25:56,417 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:25:56,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2024-11-28 05:25:56,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:25:56,594 INFO L256 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-28 05:25:56,597 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:25:56,628 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 6 treesize of output 5 [2024-11-28 05:25:57,023 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 05:25:57,031 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 05:25:57,100 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-28 05:25:57,108 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 05:25:57,294 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 17 treesize of output 9 [2024-11-28 05:25:57,374 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:25:57,374 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:25:57,374 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:25:57,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [137998373] [2024-11-28 05:25:57,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [137998373] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:25:57,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:25:57,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-28 05:25:57,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556879450] [2024-11-28 05:25:57,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:25:57,375 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 05:25:57,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:25:57,375 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 05:25:57,375 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-11-28 05:25:57,375 INFO L87 Difference]: Start difference. First operand 1237 states and 1670 transitions. Second operand has 12 states, 11 states have (on average 4.909090909090909) internal successors, (54), 11 states have internal predecessors, (54), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:25:58,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:25:58,950 INFO L93 Difference]: Finished difference Result 1593 states and 2177 transitions. [2024-11-28 05:25:58,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 05:25:58,951 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.909090909090909) internal successors, (54), 11 states have internal predecessors, (54), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 56 [2024-11-28 05:25:58,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:25:58,954 INFO L225 Difference]: With dead ends: 1593 [2024-11-28 05:25:58,954 INFO L226 Difference]: Without dead ends: 1593 [2024-11-28 05:25:58,954 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2024-11-28 05:25:58,955 INFO L435 NwaCegarLoop]: 149 mSDtfsCounter, 276 mSDsluCounter, 1080 mSDsCounter, 0 mSdLazyCounter, 642 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 1229 SdHoareTripleChecker+Invalid, 644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 642 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-28 05:25:58,955 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [276 Valid, 1229 Invalid, 644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 642 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-28 05:25:58,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1593 states. [2024-11-28 05:25:58,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1593 to 1366. [2024-11-28 05:25:58,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1366 states, 1274 states have (on average 1.4042386185243327) internal successors, (1789), 1317 states have internal predecessors, (1789), 42 states have call successors, (42), 8 states have call predecessors, (42), 8 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) [2024-11-28 05:25:58,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1366 states to 1366 states and 1873 transitions. [2024-11-28 05:25:58,968 INFO L78 Accepts]: Start accepts. Automaton has 1366 states and 1873 transitions. Word has length 56 [2024-11-28 05:25:58,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:25:58,968 INFO L471 AbstractCegarLoop]: Abstraction has 1366 states and 1873 transitions. [2024-11-28 05:25:58,968 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.909090909090909) internal successors, (54), 11 states have internal predecessors, (54), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:25:58,968 INFO L276 IsEmpty]: Start isEmpty. Operand 1366 states and 1873 transitions. [2024-11-28 05:25:58,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-28 05:25:58,969 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:25:58,969 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:25:58,976 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2024-11-28 05:25:59,169 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:25:59,170 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2024-11-28 05:25:59,170 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:25:59,170 INFO L85 PathProgramCache]: Analyzing trace with hash 1157897616, now seen corresponding path program 1 times [2024-11-28 05:25:59,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:25:59,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [308536663] [2024-11-28 05:25:59,170 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:25:59,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:25:59,170 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:25:59,172 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:25:59,173 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2024-11-28 05:25:59,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:25:59,353 INFO L256 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-28 05:25:59,355 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:25:59,674 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 05:25:59,776 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-28 05:25:59,803 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:25:59,803 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:25:59,803 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:25:59,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [308536663] [2024-11-28 05:25:59,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [308536663] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:25:59,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:25:59,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-28 05:25:59,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643205416] [2024-11-28 05:25:59,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:25:59,804 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 05:25:59,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:25:59,804 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 05:25:59,805 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-11-28 05:25:59,805 INFO L87 Difference]: Start difference. First operand 1366 states and 1873 transitions. Second operand has 12 states, 11 states have (on average 4.909090909090909) internal successors, (54), 11 states have internal predecessors, (54), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:26:00,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:26:00,948 INFO L93 Difference]: Finished difference Result 1988 states and 2750 transitions. [2024-11-28 05:26:00,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 05:26:00,949 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.909090909090909) internal successors, (54), 11 states have internal predecessors, (54), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 56 [2024-11-28 05:26:00,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:26:00,955 INFO L225 Difference]: With dead ends: 1988 [2024-11-28 05:26:00,955 INFO L226 Difference]: Without dead ends: 1988 [2024-11-28 05:26:00,955 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2024-11-28 05:26:00,956 INFO L435 NwaCegarLoop]: 155 mSDtfsCounter, 408 mSDsluCounter, 897 mSDsCounter, 0 mSdLazyCounter, 623 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 408 SdHoareTripleChecker+Valid, 1052 SdHoareTripleChecker+Invalid, 627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-28 05:26:00,956 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [408 Valid, 1052 Invalid, 627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 623 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-28 05:26:00,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1988 states. [2024-11-28 05:26:00,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1988 to 1627. [2024-11-28 05:26:00,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1627 states, 1511 states have (on average 1.401058901389808) internal successors, (2117), 1564 states have internal predecessors, (2117), 62 states have call successors, (62), 12 states have call predecessors, (62), 12 states have return successors, (62), 50 states have call predecessors, (62), 62 states have call successors, (62) [2024-11-28 05:26:00,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1627 states to 1627 states and 2241 transitions. [2024-11-28 05:26:00,979 INFO L78 Accepts]: Start accepts. Automaton has 1627 states and 2241 transitions. Word has length 56 [2024-11-28 05:26:00,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:26:00,979 INFO L471 AbstractCegarLoop]: Abstraction has 1627 states and 2241 transitions. [2024-11-28 05:26:00,979 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.909090909090909) internal successors, (54), 11 states have internal predecessors, (54), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:26:00,980 INFO L276 IsEmpty]: Start isEmpty. Operand 1627 states and 2241 transitions. [2024-11-28 05:26:00,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-28 05:26:00,980 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:26:00,980 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:26:00,990 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2024-11-28 05:26:01,181 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:26:01,181 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr62REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2024-11-28 05:26:01,181 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:26:01,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1157897617, now seen corresponding path program 1 times [2024-11-28 05:26:01,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:26:01,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [913145413] [2024-11-28 05:26:01,182 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:26:01,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:26:01,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:26:01,183 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:26:01,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2024-11-28 05:26:01,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:26:01,365 INFO L256 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-28 05:26:01,367 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:26:01,398 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 6 treesize of output 5 [2024-11-28 05:26:01,837 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 05:26:01,847 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 05:26:02,005 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 17 treesize of output 9 [2024-11-28 05:26:02,058 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:26:02,058 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:26:02,058 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:26:02,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [913145413] [2024-11-28 05:26:02,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [913145413] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:26:02,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:26:02,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 05:26:02,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478066733] [2024-11-28 05:26:02,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:26:02,058 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 05:26:02,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:26:02,059 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 05:26:02,059 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-28 05:26:02,059 INFO L87 Difference]: Start difference. First operand 1627 states and 2241 transitions. Second operand has 11 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:26:03,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:26:03,460 INFO L93 Difference]: Finished difference Result 2187 states and 3047 transitions. [2024-11-28 05:26:03,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 05:26:03,461 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 56 [2024-11-28 05:26:03,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:26:03,467 INFO L225 Difference]: With dead ends: 2187 [2024-11-28 05:26:03,467 INFO L226 Difference]: Without dead ends: 2187 [2024-11-28 05:26:03,468 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2024-11-28 05:26:03,468 INFO L435 NwaCegarLoop]: 156 mSDtfsCounter, 259 mSDsluCounter, 991 mSDsCounter, 0 mSdLazyCounter, 594 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 1147 SdHoareTripleChecker+Invalid, 596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-28 05:26:03,468 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [259 Valid, 1147 Invalid, 596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 594 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-28 05:26:03,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2187 states. [2024-11-28 05:26:03,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2187 to 1868. [2024-11-28 05:26:03,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1868 states, 1740 states have (on average 1.424712643678161) internal successors, (2479), 1797 states have internal predecessors, (2479), 72 states have call successors, (72), 14 states have call predecessors, (72), 14 states have return successors, (72), 56 states have call predecessors, (72), 72 states have call successors, (72) [2024-11-28 05:26:03,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1868 states to 1868 states and 2623 transitions. [2024-11-28 05:26:03,494 INFO L78 Accepts]: Start accepts. Automaton has 1868 states and 2623 transitions. Word has length 56 [2024-11-28 05:26:03,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:26:03,494 INFO L471 AbstractCegarLoop]: Abstraction has 1868 states and 2623 transitions. [2024-11-28 05:26:03,494 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:26:03,494 INFO L276 IsEmpty]: Start isEmpty. Operand 1868 states and 2623 transitions. [2024-11-28 05:26:03,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-28 05:26:03,495 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:26:03,495 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:26:03,517 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2024-11-28 05:26:03,696 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:26:03,696 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2024-11-28 05:26:03,696 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:26:03,696 INFO L85 PathProgramCache]: Analyzing trace with hash 228989862, now seen corresponding path program 1 times [2024-11-28 05:26:03,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:26:03,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1074569046] [2024-11-28 05:26:03,697 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:26:03,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:26:03,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:26:03,699 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:26:03,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2024-11-28 05:26:03,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:26:03,899 INFO L256 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-28 05:26:03,902 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:26:04,200 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 11 treesize of output 7 [2024-11-28 05:26:04,260 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 19 [2024-11-28 05:26:04,467 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 05:26:04,467 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 27 treesize of output 11 [2024-11-28 05:26:04,507 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:26:04,507 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:26:04,507 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:26:04,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1074569046] [2024-11-28 05:26:04,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1074569046] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:26:04,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:26:04,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-28 05:26:04,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140403499] [2024-11-28 05:26:04,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:26:04,508 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-28 05:26:04,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:26:04,508 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-28 05:26:04,508 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-11-28 05:26:04,508 INFO L87 Difference]: Start difference. First operand 1868 states and 2623 transitions. Second operand has 14 states, 14 states have (on average 3.857142857142857) internal successors, (54), 13 states have internal predecessors, (54), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 05:26:05,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:26:05,722 INFO L93 Difference]: Finished difference Result 2116 states and 2945 transitions. [2024-11-28 05:26:05,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-28 05:26:05,723 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.857142857142857) internal successors, (54), 13 states have internal predecessors, (54), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 58 [2024-11-28 05:26:05,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:26:05,728 INFO L225 Difference]: With dead ends: 2116 [2024-11-28 05:26:05,728 INFO L226 Difference]: Without dead ends: 2116 [2024-11-28 05:26:05,729 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2024-11-28 05:26:05,729 INFO L435 NwaCegarLoop]: 166 mSDtfsCounter, 283 mSDsluCounter, 1309 mSDsCounter, 0 mSdLazyCounter, 481 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 1475 SdHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-28 05:26:05,729 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [283 Valid, 1475 Invalid, 481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 481 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-28 05:26:05,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2116 states. [2024-11-28 05:26:05,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2116 to 1847. [2024-11-28 05:26:05,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1847 states, 1719 states have (on average 1.4182664339732403) internal successors, (2438), 1776 states have internal predecessors, (2438), 72 states have call successors, (72), 14 states have call predecessors, (72), 14 states have return successors, (72), 56 states have call predecessors, (72), 72 states have call successors, (72) [2024-11-28 05:26:05,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1847 states to 1847 states and 2582 transitions. [2024-11-28 05:26:05,753 INFO L78 Accepts]: Start accepts. Automaton has 1847 states and 2582 transitions. Word has length 58 [2024-11-28 05:26:05,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:26:05,753 INFO L471 AbstractCegarLoop]: Abstraction has 1847 states and 2582 transitions. [2024-11-28 05:26:05,753 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.857142857142857) internal successors, (54), 13 states have internal predecessors, (54), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 05:26:05,753 INFO L276 IsEmpty]: Start isEmpty. Operand 1847 states and 2582 transitions. [2024-11-28 05:26:05,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-28 05:26:05,754 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:26:05,754 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:26:05,765 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2024-11-28 05:26:05,955 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:26:05,955 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr66ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2024-11-28 05:26:05,956 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:26:05,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1477832034, now seen corresponding path program 1 times [2024-11-28 05:26:05,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:26:05,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1158146878] [2024-11-28 05:26:05,957 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:26:05,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:26:05,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:26:05,959 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:26:05,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2024-11-28 05:26:06,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:26:06,145 INFO L256 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 05:26:06,146 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:26:06,214 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 05:26:06,215 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:26:06,326 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 05:26:06,327 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:26:06,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1158146878] [2024-11-28 05:26:06,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1158146878] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:26:06,327 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 05:26:06,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2024-11-28 05:26:06,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459364732] [2024-11-28 05:26:06,327 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 05:26:06,327 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 05:26:06,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:26:06,328 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 05:26:06,328 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:26:06,328 INFO L87 Difference]: Start difference. First operand 1847 states and 2582 transitions. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 05:26:06,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:26:06,435 INFO L93 Difference]: Finished difference Result 8952 states and 12687 transitions. [2024-11-28 05:26:06,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 05:26:06,436 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 57 [2024-11-28 05:26:06,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:26:06,459 INFO L225 Difference]: With dead ends: 8952 [2024-11-28 05:26:06,459 INFO L226 Difference]: Without dead ends: 8952 [2024-11-28 05:26:06,460 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-28 05:26:06,460 INFO L435 NwaCegarLoop]: 367 mSDtfsCounter, 884 mSDsluCounter, 717 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 890 SdHoareTripleChecker+Valid, 1084 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 05:26:06,460 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [890 Valid, 1084 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 05:26:06,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8952 states. [2024-11-28 05:26:06,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8952 to 7081. [2024-11-28 05:26:06,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7081 states, 6763 states have (on average 1.4419636256099364) internal successors, (9752), 6856 states have internal predecessors, (9752), 262 states have call successors, (262), 14 states have call predecessors, (262), 14 states have return successors, (262), 210 states have call predecessors, (262), 262 states have call successors, (262) [2024-11-28 05:26:06,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7081 states to 7081 states and 10276 transitions. [2024-11-28 05:26:06,583 INFO L78 Accepts]: Start accepts. Automaton has 7081 states and 10276 transitions. Word has length 57 [2024-11-28 05:26:06,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:26:06,583 INFO L471 AbstractCegarLoop]: Abstraction has 7081 states and 10276 transitions. [2024-11-28 05:26:06,583 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 05:26:06,583 INFO L276 IsEmpty]: Start isEmpty. Operand 7081 states and 10276 transitions. [2024-11-28 05:26:06,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-28 05:26:06,584 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:26:06,584 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:26:06,594 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0 [2024-11-28 05:26:06,785 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:26:06,785 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2024-11-28 05:26:06,786 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:26:06,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1023567186, now seen corresponding path program 1 times [2024-11-28 05:26:06,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:26:06,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [54781377] [2024-11-28 05:26:06,786 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:26:06,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:26:06,787 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:26:06,789 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:26:06,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2024-11-28 05:26:06,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:26:06,999 INFO L256 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-28 05:26:07,002 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:26:07,349 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:26:07,349 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:26:07,349 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:26:07,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [54781377] [2024-11-28 05:26:07,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [54781377] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:26:07,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:26:07,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 05:26:07,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856846244] [2024-11-28 05:26:07,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:26:07,350 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 05:26:07,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:26:07,351 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 05:26:07,351 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:26:07,351 INFO L87 Difference]: Start difference. First operand 7081 states and 10276 transitions. Second operand has 6 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 05:26:07,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:26:07,847 INFO L93 Difference]: Finished difference Result 7129 states and 10114 transitions. [2024-11-28 05:26:07,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 05:26:07,848 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 60 [2024-11-28 05:26:07,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:26:07,863 INFO L225 Difference]: With dead ends: 7129 [2024-11-28 05:26:07,863 INFO L226 Difference]: Without dead ends: 7129 [2024-11-28 05:26:07,864 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-28 05:26:07,864 INFO L435 NwaCegarLoop]: 114 mSDtfsCounter, 318 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 318 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 05:26:07,864 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [318 Valid, 270 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 05:26:07,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7129 states. [2024-11-28 05:26:07,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7129 to 7078. [2024-11-28 05:26:07,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7078 states, 6763 states have (on average 1.4104687268963478) internal successors, (9539), 6853 states have internal predecessors, (9539), 262 states have call successors, (262), 14 states have call predecessors, (262), 14 states have return successors, (262), 210 states have call predecessors, (262), 262 states have call successors, (262) [2024-11-28 05:26:07,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7078 states to 7078 states and 10063 transitions. [2024-11-28 05:26:07,991 INFO L78 Accepts]: Start accepts. Automaton has 7078 states and 10063 transitions. Word has length 60 [2024-11-28 05:26:07,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:26:07,991 INFO L471 AbstractCegarLoop]: Abstraction has 7078 states and 10063 transitions. [2024-11-28 05:26:07,991 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 05:26:07,992 INFO L276 IsEmpty]: Start isEmpty. Operand 7078 states and 10063 transitions. [2024-11-28 05:26:07,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-28 05:26:07,993 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:26:07,994 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:26:08,004 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2024-11-28 05:26:08,194 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:26:08,194 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr64ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2024-11-28 05:26:08,194 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:26:08,195 INFO L85 PathProgramCache]: Analyzing trace with hash -1439826430, now seen corresponding path program 1 times [2024-11-28 05:26:08,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:26:08,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1610055321] [2024-11-28 05:26:08,195 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:26:08,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:26:08,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:26:08,200 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:26:08,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2024-11-28 05:26:08,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:26:08,425 INFO L256 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-28 05:26:08,428 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:26:08,824 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 05:26:08,884 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-28 05:26:09,004 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-28 05:26:09,046 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:26:09,046 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:26:09,046 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:26:09,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1610055321] [2024-11-28 05:26:09,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1610055321] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:26:09,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:26:09,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-28 05:26:09,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083274580] [2024-11-28 05:26:09,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:26:09,047 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 05:26:09,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:26:09,047 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 05:26:09,047 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-11-28 05:26:09,048 INFO L87 Difference]: Start difference. First operand 7078 states and 10063 transitions. Second operand has 12 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:26:10,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:26:10,350 INFO L93 Difference]: Finished difference Result 8212 states and 11783 transitions. [2024-11-28 05:26:10,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 05:26:10,352 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 59 [2024-11-28 05:26:10,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:26:10,369 INFO L225 Difference]: With dead ends: 8212 [2024-11-28 05:26:10,369 INFO L226 Difference]: Without dead ends: 8212 [2024-11-28 05:26:10,369 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2024-11-28 05:26:10,370 INFO L435 NwaCegarLoop]: 129 mSDtfsCounter, 334 mSDsluCounter, 937 mSDsCounter, 0 mSdLazyCounter, 466 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 1066 SdHoareTripleChecker+Invalid, 472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-28 05:26:10,370 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [334 Valid, 1066 Invalid, 472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 466 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-28 05:26:10,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8212 states. [2024-11-28 05:26:10,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8212 to 7489. [2024-11-28 05:26:10,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7489 states, 7158 states have (on average 1.4129645152277173) internal successors, (10114), 7254 states have internal predecessors, (10114), 277 states have call successors, (277), 15 states have call predecessors, (277), 15 states have return successors, (277), 219 states have call predecessors, (277), 277 states have call successors, (277) [2024-11-28 05:26:10,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7489 states to 7489 states and 10668 transitions. [2024-11-28 05:26:10,509 INFO L78 Accepts]: Start accepts. Automaton has 7489 states and 10668 transitions. Word has length 59 [2024-11-28 05:26:10,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:26:10,510 INFO L471 AbstractCegarLoop]: Abstraction has 7489 states and 10668 transitions. [2024-11-28 05:26:10,510 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:26:10,510 INFO L276 IsEmpty]: Start isEmpty. Operand 7489 states and 10668 transitions. [2024-11-28 05:26:10,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-28 05:26:10,511 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:26:10,511 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:26:10,521 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2024-11-28 05:26:10,711 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:26:10,712 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr64ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2024-11-28 05:26:10,713 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:26:10,713 INFO L85 PathProgramCache]: Analyzing trace with hash 2045794240, now seen corresponding path program 1 times [2024-11-28 05:26:10,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:26:10,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1024670498] [2024-11-28 05:26:10,714 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:26:10,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:26:10,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:26:10,716 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:26:10,721 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2024-11-28 05:26:10,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:26:10,952 INFO L256 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-28 05:26:10,954 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:26:11,339 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 05:26:11,457 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-28 05:26:11,498 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:26:11,498 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:26:11,498 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:26:11,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1024670498] [2024-11-28 05:26:11,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1024670498] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:26:11,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:26:11,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 05:26:11,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318467649] [2024-11-28 05:26:11,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:26:11,499 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 05:26:11,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:26:11,499 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 05:26:11,499 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-28 05:26:11,499 INFO L87 Difference]: Start difference. First operand 7489 states and 10668 transitions. Second operand has 11 states, 10 states have (on average 5.7) internal successors, (57), 10 states have internal predecessors, (57), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:26:12,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:26:12,808 INFO L93 Difference]: Finished difference Result 9276 states and 13292 transitions. [2024-11-28 05:26:12,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 05:26:12,809 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 5.7) internal successors, (57), 10 states have internal predecessors, (57), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 59 [2024-11-28 05:26:12,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:26:12,825 INFO L225 Difference]: With dead ends: 9276 [2024-11-28 05:26:12,825 INFO L226 Difference]: Without dead ends: 9276 [2024-11-28 05:26:12,825 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2024-11-28 05:26:12,825 INFO L435 NwaCegarLoop]: 137 mSDtfsCounter, 254 mSDsluCounter, 931 mSDsCounter, 0 mSdLazyCounter, 489 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 1068 SdHoareTripleChecker+Invalid, 494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-28 05:26:12,825 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [254 Valid, 1068 Invalid, 494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 489 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-28 05:26:12,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9276 states. [2024-11-28 05:26:12,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9276 to 8225. [2024-11-28 05:26:12,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8225 states, 7862 states have (on average 1.4178326125667768) internal successors, (11147), 7970 states have internal predecessors, (11147), 307 states have call successors, (307), 17 states have call predecessors, (307), 17 states have return successors, (307), 237 states have call predecessors, (307), 307 states have call successors, (307) [2024-11-28 05:26:12,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8225 states to 8225 states and 11761 transitions. [2024-11-28 05:26:12,931 INFO L78 Accepts]: Start accepts. Automaton has 8225 states and 11761 transitions. Word has length 59 [2024-11-28 05:26:12,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:26:12,932 INFO L471 AbstractCegarLoop]: Abstraction has 8225 states and 11761 transitions. [2024-11-28 05:26:12,932 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 5.7) internal successors, (57), 10 states have internal predecessors, (57), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:26:12,932 INFO L276 IsEmpty]: Start isEmpty. Operand 8225 states and 11761 transitions. [2024-11-28 05:26:12,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-28 05:26:12,933 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:26:12,933 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:26:12,943 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2024-11-28 05:26:13,133 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:26:13,134 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2024-11-28 05:26:13,134 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:26:13,134 INFO L85 PathProgramCache]: Analyzing trace with hash -1473014806, now seen corresponding path program 1 times [2024-11-28 05:26:13,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:26:13,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [952572197] [2024-11-28 05:26:13,135 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:26:13,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:26:13,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:26:13,137 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:26:13,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2024-11-28 05:26:13,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:26:13,354 INFO L256 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 05:26:13,355 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:26:13,384 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 19 treesize of output 11 [2024-11-28 05:26:13,406 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-28 05:26:13,407 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:26:13,407 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:26:13,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [952572197] [2024-11-28 05:26:13,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [952572197] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:26:13,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:26:13,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 05:26:13,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698596754] [2024-11-28 05:26:13,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:26:13,408 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 05:26:13,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:26:13,408 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 05:26:13,408 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:26:13,408 INFO L87 Difference]: Start difference. First operand 8225 states and 11761 transitions. Second operand has 6 states, 5 states have (on average 9.4) internal successors, (47), 6 states have internal predecessors, (47), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:26:14,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:26:14,018 INFO L93 Difference]: Finished difference Result 8221 states and 11647 transitions. [2024-11-28 05:26:14,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 05:26:14,018 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.4) internal successors, (47), 6 states have internal predecessors, (47), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 63 [2024-11-28 05:26:14,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:26:14,036 INFO L225 Difference]: With dead ends: 8221 [2024-11-28 05:26:14,036 INFO L226 Difference]: Without dead ends: 8221 [2024-11-28 05:26:14,036 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-28 05:26:14,036 INFO L435 NwaCegarLoop]: 137 mSDtfsCounter, 32 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 525 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 05:26:14,037 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 525 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 05:26:14,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8221 states. [2024-11-28 05:26:14,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8221 to 8221. [2024-11-28 05:26:14,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8221 states, 7862 states have (on average 1.4033324853726787) internal successors, (11033), 7966 states have internal predecessors, (11033), 307 states have call successors, (307), 17 states have call predecessors, (307), 17 states have return successors, (307), 237 states have call predecessors, (307), 307 states have call successors, (307) [2024-11-28 05:26:14,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8221 states to 8221 states and 11647 transitions. [2024-11-28 05:26:14,206 INFO L78 Accepts]: Start accepts. Automaton has 8221 states and 11647 transitions. Word has length 63 [2024-11-28 05:26:14,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:26:14,207 INFO L471 AbstractCegarLoop]: Abstraction has 8221 states and 11647 transitions. [2024-11-28 05:26:14,207 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.4) internal successors, (47), 6 states have internal predecessors, (47), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:26:14,207 INFO L276 IsEmpty]: Start isEmpty. Operand 8221 states and 11647 transitions. [2024-11-28 05:26:14,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-28 05:26:14,209 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:26:14,209 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:26:14,220 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2024-11-28 05:26:14,409 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:26:14,410 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2024-11-28 05:26:14,410 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:26:14,411 INFO L85 PathProgramCache]: Analyzing trace with hash -1473014805, now seen corresponding path program 1 times [2024-11-28 05:26:14,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:26:14,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [982111889] [2024-11-28 05:26:14,412 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:26:14,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:26:14,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:26:14,416 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:26:14,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2024-11-28 05:26:14,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:26:14,635 INFO L256 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 05:26:14,637 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:26:14,664 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-28 05:26:14,664 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:26:14,664 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:26:14,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [982111889] [2024-11-28 05:26:14,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [982111889] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:26:14,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:26:14,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 05:26:14,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972850989] [2024-11-28 05:26:14,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:26:14,665 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:26:14,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:26:14,666 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:26:14,666 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:26:14,666 INFO L87 Difference]: Start difference. First operand 8221 states and 11647 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:26:14,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:26:14,714 INFO L93 Difference]: Finished difference Result 8923 states and 12635 transitions. [2024-11-28 05:26:14,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:26:14,715 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 63 [2024-11-28 05:26:14,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:26:14,729 INFO L225 Difference]: With dead ends: 8923 [2024-11-28 05:26:14,730 INFO L226 Difference]: Without dead ends: 8923 [2024-11-28 05:26:14,730 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 60 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 05:26:14,730 INFO L435 NwaCegarLoop]: 187 mSDtfsCounter, 64 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 05:26:14,731 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 487 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 05:26:14,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8923 states. [2024-11-28 05:26:14,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8923 to 8259. [2024-11-28 05:26:14,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8259 states, 7900 states have (on average 1.401392405063291) internal successors, (11071), 8004 states have internal predecessors, (11071), 307 states have call successors, (307), 17 states have call predecessors, (307), 17 states have return successors, (307), 237 states have call predecessors, (307), 307 states have call successors, (307) [2024-11-28 05:26:14,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8259 states to 8259 states and 11685 transitions. [2024-11-28 05:26:14,832 INFO L78 Accepts]: Start accepts. Automaton has 8259 states and 11685 transitions. Word has length 63 [2024-11-28 05:26:14,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:26:14,832 INFO L471 AbstractCegarLoop]: Abstraction has 8259 states and 11685 transitions. [2024-11-28 05:26:14,832 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:26:14,832 INFO L276 IsEmpty]: Start isEmpty. Operand 8259 states and 11685 transitions. [2024-11-28 05:26:14,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-28 05:26:14,833 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:26:14,833 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:26:14,843 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2024-11-28 05:26:15,034 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:26:15,035 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2024-11-28 05:26:15,035 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:26:15,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1473014743, now seen corresponding path program 1 times [2024-11-28 05:26:15,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:26:15,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [454843565] [2024-11-28 05:26:15,036 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:26:15,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:26:15,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:26:15,038 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:26:15,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2024-11-28 05:26:15,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:26:15,260 INFO L256 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-28 05:26:15,263 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:26:15,607 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 05:26:15,662 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-28 05:26:15,950 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 17 treesize of output 9 [2024-11-28 05:26:16,015 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:26:16,015 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:26:16,287 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 05:26:16,287 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 51 treesize of output 55 [2024-11-28 05:26:17,327 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 98 treesize of output 90 [2024-11-28 05:26:17,997 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 05:26:17,997 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:26:17,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [454843565] [2024-11-28 05:26:17,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [454843565] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:26:17,997 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 05:26:17,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 30 [2024-11-28 05:26:17,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055497865] [2024-11-28 05:26:17,998 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 05:26:17,998 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-28 05:26:17,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:26:17,999 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-28 05:26:17,999 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=830, Unknown=0, NotChecked=0, Total=930 [2024-11-28 05:26:17,999 INFO L87 Difference]: Start difference. First operand 8259 states and 11685 transitions. Second operand has 31 states, 30 states have (on average 3.933333333333333) internal successors, (118), 29 states have internal predecessors, (118), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-28 05:26:25,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:26:25,193 INFO L93 Difference]: Finished difference Result 10050 states and 13970 transitions. [2024-11-28 05:26:25,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-28 05:26:25,194 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 3.933333333333333) internal successors, (118), 29 states have internal predecessors, (118), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 63 [2024-11-28 05:26:25,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:26:25,210 INFO L225 Difference]: With dead ends: 10050 [2024-11-28 05:26:25,210 INFO L226 Difference]: Without dead ends: 10050 [2024-11-28 05:26:25,211 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 813 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=489, Invalid=2933, Unknown=0, NotChecked=0, Total=3422 [2024-11-28 05:26:25,211 INFO L435 NwaCegarLoop]: 142 mSDtfsCounter, 861 mSDsluCounter, 2369 mSDsCounter, 0 mSdLazyCounter, 1132 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 863 SdHoareTripleChecker+Valid, 2511 SdHoareTripleChecker+Invalid, 1166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-11-28 05:26:25,212 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [863 Valid, 2511 Invalid, 1166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1132 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2024-11-28 05:26:25,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10050 states. [2024-11-28 05:26:25,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10050 to 8424. [2024-11-28 05:26:25,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8424 states, 8069 states have (on average 1.387160738629322) internal successors, (11193), 8163 states have internal predecessors, (11193), 307 states have call successors, (307), 17 states have call predecessors, (307), 17 states have return successors, (307), 243 states have call predecessors, (307), 307 states have call successors, (307) [2024-11-28 05:26:25,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8424 states to 8424 states and 11807 transitions. [2024-11-28 05:26:25,349 INFO L78 Accepts]: Start accepts. Automaton has 8424 states and 11807 transitions. Word has length 63 [2024-11-28 05:26:25,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:26:25,349 INFO L471 AbstractCegarLoop]: Abstraction has 8424 states and 11807 transitions. [2024-11-28 05:26:25,349 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 3.933333333333333) internal successors, (118), 29 states have internal predecessors, (118), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-28 05:26:25,349 INFO L276 IsEmpty]: Start isEmpty. Operand 8424 states and 11807 transitions. [2024-11-28 05:26:25,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-28 05:26:25,350 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:26:25,350 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:26:25,361 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2024-11-28 05:26:25,551 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:26:25,551 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr49REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2024-11-28 05:26:25,552 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:26:25,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1177608662, now seen corresponding path program 1 times [2024-11-28 05:26:25,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:26:25,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1698917034] [2024-11-28 05:26:25,553 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:26:25,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:26:25,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:26:25,555 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:26:25,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2024-11-28 05:26:25,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:26:25,797 INFO L256 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 05:26:25,800 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:26:25,998 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 05:26:25,998 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:26:25,998 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:26:25,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1698917034] [2024-11-28 05:26:25,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1698917034] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:26:25,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:26:25,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 05:26:25,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923020406] [2024-11-28 05:26:25,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:26:25,999 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 05:26:25,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:26:26,000 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 05:26:26,000 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-28 05:26:26,000 INFO L87 Difference]: Start difference. First operand 8424 states and 11807 transitions. Second operand has 7 states, 6 states have (on average 9.5) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 05:26:26,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:26:26,326 INFO L93 Difference]: Finished difference Result 8500 states and 11855 transitions. [2024-11-28 05:26:26,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 05:26:26,327 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 9.5) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 63 [2024-11-28 05:26:26,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:26:26,338 INFO L225 Difference]: With dead ends: 8500 [2024-11-28 05:26:26,338 INFO L226 Difference]: Without dead ends: 8500 [2024-11-28 05:26:26,339 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-28 05:26:26,339 INFO L435 NwaCegarLoop]: 135 mSDtfsCounter, 128 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 596 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 05:26:26,339 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 596 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 05:26:26,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8500 states. [2024-11-28 05:26:26,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8500 to 8422. [2024-11-28 05:26:26,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8422 states, 8069 states have (on average 1.3834428057999753) internal successors, (11163), 8161 states have internal predecessors, (11163), 307 states have call successors, (307), 17 states have call predecessors, (307), 17 states have return successors, (307), 243 states have call predecessors, (307), 307 states have call successors, (307) [2024-11-28 05:26:26,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8422 states to 8422 states and 11777 transitions. [2024-11-28 05:26:26,436 INFO L78 Accepts]: Start accepts. Automaton has 8422 states and 11777 transitions. Word has length 63 [2024-11-28 05:26:26,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:26:26,436 INFO L471 AbstractCegarLoop]: Abstraction has 8422 states and 11777 transitions. [2024-11-28 05:26:26,437 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 9.5) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 05:26:26,437 INFO L276 IsEmpty]: Start isEmpty. Operand 8422 states and 11777 transitions. [2024-11-28 05:26:26,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-28 05:26:26,438 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:26:26,438 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:26:26,448 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2024-11-28 05:26:26,641 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:26:26,642 INFO L396 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2024-11-28 05:26:26,642 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:26:26,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1650844673, now seen corresponding path program 1 times [2024-11-28 05:26:26,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:26:26,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [853379741] [2024-11-28 05:26:26,643 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:26:26,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:26:26,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:26:26,645 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:26:26,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2024-11-28 05:26:26,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:26:26,873 INFO L256 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 05:26:26,874 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:26:26,896 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 19 treesize of output 11 [2024-11-28 05:26:26,916 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-28 05:26:26,916 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:26:26,916 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:26:26,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [853379741] [2024-11-28 05:26:26,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [853379741] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:26:26,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:26:26,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 05:26:26,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311631996] [2024-11-28 05:26:26,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:26:26,917 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 05:26:26,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:26:26,917 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 05:26:26,917 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:26:26,917 INFO L87 Difference]: Start difference. First operand 8422 states and 11777 transitions. Second operand has 6 states, 5 states have (on average 9.6) internal successors, (48), 6 states have internal predecessors, (48), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:26:27,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:26:27,556 INFO L93 Difference]: Finished difference Result 8610 states and 11891 transitions. [2024-11-28 05:26:27,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 05:26:27,556 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.6) internal successors, (48), 6 states have internal predecessors, (48), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 64 [2024-11-28 05:26:27,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:26:27,567 INFO L225 Difference]: With dead ends: 8610 [2024-11-28 05:26:27,568 INFO L226 Difference]: Without dead ends: 8610 [2024-11-28 05:26:27,568 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-28 05:26:27,568 INFO L435 NwaCegarLoop]: 140 mSDtfsCounter, 16 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 525 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 05:26:27,568 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 525 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 05:26:27,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8610 states. [2024-11-28 05:26:27,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8610 to 8420. [2024-11-28 05:26:27,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8420 states, 8069 states have (on average 1.3740240426322965) internal successors, (11087), 8159 states have internal predecessors, (11087), 307 states have call successors, (307), 17 states have call predecessors, (307), 17 states have return successors, (307), 243 states have call predecessors, (307), 307 states have call successors, (307) [2024-11-28 05:26:27,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8420 states to 8420 states and 11701 transitions. [2024-11-28 05:26:27,667 INFO L78 Accepts]: Start accepts. Automaton has 8420 states and 11701 transitions. Word has length 64 [2024-11-28 05:26:27,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:26:27,668 INFO L471 AbstractCegarLoop]: Abstraction has 8420 states and 11701 transitions. [2024-11-28 05:26:27,668 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.6) internal successors, (48), 6 states have internal predecessors, (48), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:26:27,668 INFO L276 IsEmpty]: Start isEmpty. Operand 8420 states and 11701 transitions. [2024-11-28 05:26:27,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-28 05:26:27,669 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:26:27,669 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:26:27,679 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2024-11-28 05:26:27,869 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:26:27,870 INFO L396 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2024-11-28 05:26:27,870 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:26:27,870 INFO L85 PathProgramCache]: Analyzing trace with hash 1650844674, now seen corresponding path program 1 times [2024-11-28 05:26:27,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:26:27,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1787641234] [2024-11-28 05:26:27,870 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:26:27,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:26:27,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:26:27,872 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:26:27,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2024-11-28 05:26:28,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:26:28,104 INFO L256 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-28 05:26:28,107 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:26:28,399 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 05:26:28,450 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-28 05:26:28,787 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 17 treesize of output 9 [2024-11-28 05:26:28,863 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:26:28,863 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:26:29,143 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 05:26:29,143 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 51 treesize of output 55 [2024-11-28 05:26:30,382 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 90 treesize of output 82 [2024-11-28 05:26:30,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:26:30,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:26:31,228 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 05:26:31,228 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:26:31,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1787641234] [2024-11-28 05:26:31,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1787641234] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:26:31,228 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 05:26:31,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 30 [2024-11-28 05:26:31,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051447129] [2024-11-28 05:26:31,228 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 05:26:31,229 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-28 05:26:31,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:26:31,229 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-28 05:26:31,229 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=834, Unknown=0, NotChecked=0, Total=930 [2024-11-28 05:26:31,230 INFO L87 Difference]: Start difference. First operand 8420 states and 11701 transitions. Second operand has 31 states, 30 states have (on average 4.0) internal successors, (120), 29 states have internal predecessors, (120), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-28 05:26:40,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:26:40,798 INFO L93 Difference]: Finished difference Result 9702 states and 13246 transitions. [2024-11-28 05:26:40,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-28 05:26:40,799 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 4.0) internal successors, (120), 29 states have internal predecessors, (120), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 64 [2024-11-28 05:26:40,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:26:40,809 INFO L225 Difference]: With dead ends: 9702 [2024-11-28 05:26:40,809 INFO L226 Difference]: Without dead ends: 9702 [2024-11-28 05:26:40,810 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 717 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=434, Invalid=2646, Unknown=0, NotChecked=0, Total=3080 [2024-11-28 05:26:40,811 INFO L435 NwaCegarLoop]: 124 mSDtfsCounter, 492 mSDsluCounter, 2723 mSDsCounter, 0 mSdLazyCounter, 1344 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 494 SdHoareTripleChecker+Valid, 2847 SdHoareTripleChecker+Invalid, 1362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2024-11-28 05:26:40,811 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [494 Valid, 2847 Invalid, 1362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1344 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2024-11-28 05:26:40,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9702 states. [2024-11-28 05:26:40,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9702 to 8509. [2024-11-28 05:26:40,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8509 states, 8159 states have (on average 1.3673244270131144) internal successors, (11156), 8248 states have internal predecessors, (11156), 307 states have call successors, (307), 17 states have call predecessors, (307), 17 states have return successors, (307), 243 states have call predecessors, (307), 307 states have call successors, (307) [2024-11-28 05:26:40,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8509 states to 8509 states and 11770 transitions. [2024-11-28 05:26:40,922 INFO L78 Accepts]: Start accepts. Automaton has 8509 states and 11770 transitions. Word has length 64 [2024-11-28 05:26:40,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:26:40,923 INFO L471 AbstractCegarLoop]: Abstraction has 8509 states and 11770 transitions. [2024-11-28 05:26:40,923 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 4.0) internal successors, (120), 29 states have internal predecessors, (120), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-28 05:26:40,923 INFO L276 IsEmpty]: Start isEmpty. Operand 8509 states and 11770 transitions. [2024-11-28 05:26:40,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-28 05:26:40,924 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:26:40,925 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:26:40,936 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2024-11-28 05:26:41,125 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:26:41,125 INFO L396 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2024-11-28 05:26:41,125 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:26:41,126 INFO L85 PathProgramCache]: Analyzing trace with hash -2146152808, now seen corresponding path program 1 times [2024-11-28 05:26:41,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:26:41,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1500600892] [2024-11-28 05:26:41,126 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:26:41,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:26:41,126 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:26:41,127 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:26:41,129 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2024-11-28 05:26:41,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:26:41,355 INFO L256 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-28 05:26:41,381 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:26:41,700 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 05:26:41,910 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:26:41,910 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:26:41,910 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:26:41,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1500600892] [2024-11-28 05:26:41,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1500600892] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:26:41,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:26:41,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-28 05:26:41,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085739083] [2024-11-28 05:26:41,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:26:41,910 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 05:26:41,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:26:41,911 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 05:26:41,911 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-11-28 05:26:41,911 INFO L87 Difference]: Start difference. First operand 8509 states and 11770 transitions. Second operand has 13 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 05:26:42,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:26:42,958 INFO L93 Difference]: Finished difference Result 9787 states and 13351 transitions. [2024-11-28 05:26:42,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 05:26:42,959 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 64 [2024-11-28 05:26:42,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:26:42,967 INFO L225 Difference]: With dead ends: 9787 [2024-11-28 05:26:42,967 INFO L226 Difference]: Without dead ends: 9787 [2024-11-28 05:26:42,967 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2024-11-28 05:26:42,967 INFO L435 NwaCegarLoop]: 119 mSDtfsCounter, 312 mSDsluCounter, 903 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 1022 SdHoareTripleChecker+Invalid, 388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-28 05:26:42,967 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [312 Valid, 1022 Invalid, 388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 385 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-28 05:26:42,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9787 states. [2024-11-28 05:26:43,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9787 to 8509. [2024-11-28 05:26:43,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8509 states, 8159 states have (on average 1.3637700698615027) internal successors, (11127), 8248 states have internal predecessors, (11127), 307 states have call successors, (307), 17 states have call predecessors, (307), 17 states have return successors, (307), 243 states have call predecessors, (307), 307 states have call successors, (307) [2024-11-28 05:26:43,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8509 states to 8509 states and 11741 transitions. [2024-11-28 05:26:43,069 INFO L78 Accepts]: Start accepts. Automaton has 8509 states and 11741 transitions. Word has length 64 [2024-11-28 05:26:43,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:26:43,069 INFO L471 AbstractCegarLoop]: Abstraction has 8509 states and 11741 transitions. [2024-11-28 05:26:43,069 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 05:26:43,069 INFO L276 IsEmpty]: Start isEmpty. Operand 8509 states and 11741 transitions. [2024-11-28 05:26:43,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-28 05:26:43,070 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:26:43,070 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:26:43,081 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Ended with exit code 0 [2024-11-28 05:26:43,271 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:26:43,271 INFO L396 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr66ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2024-11-28 05:26:43,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:26:43,271 INFO L85 PathProgramCache]: Analyzing trace with hash -944125766, now seen corresponding path program 1 times [2024-11-28 05:26:43,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:26:43,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [454684236] [2024-11-28 05:26:43,272 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:26:43,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:26:43,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:26:43,273 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:26:43,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec7c0b-f2bf-4315-b21e-71e299d2fa52/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2024-11-28 05:26:43,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:26:43,523 INFO L256 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-28 05:26:43,526 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:26:44,026 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 05:26:44,102 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 21 [2024-11-28 05:26:44,262 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 33 treesize of output 17 [2024-11-28 05:26:44,347 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~cursor~1#1.base_15| (_ BitVec 32))) (and (= (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~cursor~1#1.base_15| (_ bv0 1)) |c_#valid|) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~cursor~1#1.base_15|)))) is different from true [2024-11-28 05:26:44,357 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2024-11-28 05:26:44,357 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:26:44,841 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 212 treesize of output 204