./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-simple/dll2n_remove_all.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_93bf4311-a14d-471a-badd-f8f794bc6a09/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bf4311-a14d-471a-badd-f8f794bc6a09/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_93bf4311-a14d-471a-badd-f8f794bc6a09/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bf4311-a14d-471a-badd-f8f794bc6a09/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-simple/dll2n_remove_all.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bf4311-a14d-471a-badd-f8f794bc6a09/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_93bf4311-a14d-471a-badd-f8f794bc6a09/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 b594cdd667b896d6ce097f6fd96950290806f015d929f3b2b06ffea35d861f89 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 03:18:08,239 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 03:18:08,303 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bf4311-a14d-471a-badd-f8f794bc6a09/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-28 03:18:08,308 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 03:18:08,309 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 03:18:08,333 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 03:18:08,334 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 03:18:08,334 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 03:18:08,335 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 03:18:08,335 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 03:18:08,335 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 03:18:08,335 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 03:18:08,335 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 03:18:08,336 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 03:18:08,336 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 03:18:08,336 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 03:18:08,336 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 03:18:08,336 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 03:18:08,336 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 03:18:08,337 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 03:18:08,337 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-28 03:18:08,337 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-28 03:18:08,337 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-28 03:18:08,337 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 03:18:08,337 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-28 03:18:08,337 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 03:18:08,338 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 03:18:08,338 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 03:18:08,338 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 03:18:08,338 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 03:18:08,338 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:18:08,338 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:18:08,339 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:18:08,339 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:18:08,339 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 03:18:08,339 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:18:08,339 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:18:08,339 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:18:08,340 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:18:08,340 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 03:18:08,340 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 03:18:08,340 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 03:18:08,340 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 03:18:08,340 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 03:18:08,340 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 03:18:08,341 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 03:18:08,341 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 03:18:08,341 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_93bf4311-a14d-471a-badd-f8f794bc6a09/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 -> b594cdd667b896d6ce097f6fd96950290806f015d929f3b2b06ffea35d861f89 [2024-11-28 03:18:08,674 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 03:18:08,684 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 03:18:08,686 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 03:18:08,688 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 03:18:08,688 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 03:18:08,689 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bf4311-a14d-471a-badd-f8f794bc6a09/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/list-simple/dll2n_remove_all.i [2024-11-28 03:18:11,696 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bf4311-a14d-471a-badd-f8f794bc6a09/bin/uautomizer-verify-aQ6SnzHsRB/data/f96715890/7afed343c172452ea72c87e8233bd47f/FLAGe0afa1bf3 [2024-11-28 03:18:12,050 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 03:18:12,050 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bf4311-a14d-471a-badd-f8f794bc6a09/sv-benchmarks/c/list-simple/dll2n_remove_all.i [2024-11-28 03:18:12,068 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bf4311-a14d-471a-badd-f8f794bc6a09/bin/uautomizer-verify-aQ6SnzHsRB/data/f96715890/7afed343c172452ea72c87e8233bd47f/FLAGe0afa1bf3 [2024-11-28 03:18:12,082 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bf4311-a14d-471a-badd-f8f794bc6a09/bin/uautomizer-verify-aQ6SnzHsRB/data/f96715890/7afed343c172452ea72c87e8233bd47f [2024-11-28 03:18:12,085 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 03:18:12,086 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 03:18:12,087 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 03:18:12,088 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 03:18:12,092 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 03:18:12,093 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:18:12" (1/1) ... [2024-11-28 03:18:12,094 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f4f72a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:12, skipping insertion in model container [2024-11-28 03:18:12,094 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:18:12" (1/1) ... [2024-11-28 03:18:12,125 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 03:18:12,461 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:18:12,473 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 03:18:12,550 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:18:12,583 INFO L204 MainTranslator]: Completed translation [2024-11-28 03:18:12,584 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:12 WrapperNode [2024-11-28 03:18:12,585 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 03:18:12,586 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 03:18:12,586 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 03:18:12,587 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 03:18:12,594 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:12" (1/1) ... [2024-11-28 03:18:12,611 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:12" (1/1) ... [2024-11-28 03:18:12,639 INFO L138 Inliner]: procedures = 126, calls = 32, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 81 [2024-11-28 03:18:12,640 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 03:18:12,640 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 03:18:12,641 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 03:18:12,641 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 03:18:12,649 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:12" (1/1) ... [2024-11-28 03:18:12,649 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:12" (1/1) ... [2024-11-28 03:18:12,654 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:12" (1/1) ... [2024-11-28 03:18:12,677 INFO L175 MemorySlicer]: Split 13 memory accesses to 3 slices as follows [2, 5, 6]. 46 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1, 0]. The 6 writes are split as follows [0, 1, 5]. [2024-11-28 03:18:12,680 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:12" (1/1) ... [2024-11-28 03:18:12,680 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:12" (1/1) ... [2024-11-28 03:18:12,689 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:12" (1/1) ... [2024-11-28 03:18:12,689 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:12" (1/1) ... [2024-11-28 03:18:12,696 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:12" (1/1) ... [2024-11-28 03:18:12,699 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:12" (1/1) ... [2024-11-28 03:18:12,704 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:12" (1/1) ... [2024-11-28 03:18:12,706 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 03:18:12,707 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 03:18:12,711 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 03:18:12,711 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 03:18:12,712 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:12" (1/1) ... [2024-11-28 03:18:12,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:18:12,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bf4311-a14d-471a-badd-f8f794bc6a09/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:18:12,753 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bf4311-a14d-471a-badd-f8f794bc6a09/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 03:18:12,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bf4311-a14d-471a-badd-f8f794bc6a09/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 03:18:12,788 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2024-11-28 03:18:12,788 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2024-11-28 03:18:12,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 03:18:12,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 03:18:12,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-28 03:18:12,789 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-28 03:18:12,790 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 03:18:12,790 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-28 03:18:12,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-28 03:18:12,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-28 03:18:12,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-28 03:18:12,791 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-28 03:18:12,791 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-28 03:18:12,791 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-28 03:18:12,791 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 03:18:12,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-28 03:18:12,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-28 03:18:12,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-28 03:18:12,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 03:18:12,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 03:18:12,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-28 03:18:12,792 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 03:18:12,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 03:18:12,953 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 03:18:12,956 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 03:18:12,985 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2024-11-28 03:18:13,259 INFO L? ?]: Removed 62 outVars from TransFormulas that were not future-live. [2024-11-28 03:18:13,259 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 03:18:13,270 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 03:18:13,271 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 03:18:13,271 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:18:13 BoogieIcfgContainer [2024-11-28 03:18:13,271 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 03:18:13,273 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 03:18:13,273 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 03:18:13,278 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 03:18:13,279 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:18:12" (1/3) ... [2024-11-28 03:18:13,279 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32ed1732 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:18:13, skipping insertion in model container [2024-11-28 03:18:13,279 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:12" (2/3) ... [2024-11-28 03:18:13,279 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32ed1732 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:18:13, skipping insertion in model container [2024-11-28 03:18:13,280 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:18:13" (3/3) ... [2024-11-28 03:18:13,281 INFO L128 eAbstractionObserver]: Analyzing ICFG dll2n_remove_all.i [2024-11-28 03:18:13,295 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 03:18:13,297 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG dll2n_remove_all.i that has 2 procedures, 64 locations, 1 initial locations, 2 loop locations, and 25 error locations. [2024-11-28 03:18:13,338 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 03:18:13,359 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;@6bcd9d4c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 03:18:13,359 INFO L334 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2024-11-28 03:18:13,363 INFO L276 IsEmpty]: Start isEmpty. Operand has 63 states, 36 states have (on average 1.9444444444444444) internal successors, (70), 61 states have internal predecessors, (70), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:18:13,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-28 03:18:13,370 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:18:13,370 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-28 03:18:13,371 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-11-28 03:18:13,377 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:18:13,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1037518442, now seen corresponding path program 1 times [2024-11-28 03:18:13,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:18:13,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378787433] [2024-11-28 03:18:13,388 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:18:13,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:18:13,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:18:13,683 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 03:18:13,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:18:13,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378787433] [2024-11-28 03:18:13,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378787433] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:18:13,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:18:13,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 03:18:13,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466673822] [2024-11-28 03:18:13,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:18:13,693 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:18:13,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:18:13,721 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:18:13,722 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:18:13,724 INFO L87 Difference]: Start difference. First operand has 63 states, 36 states have (on average 1.9444444444444444) internal successors, (70), 61 states have internal predecessors, (70), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:18:13,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:18:13,851 INFO L93 Difference]: Finished difference Result 59 states and 63 transitions. [2024-11-28 03:18:13,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:18:13,854 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-11-28 03:18:13,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:18:13,860 INFO L225 Difference]: With dead ends: 59 [2024-11-28 03:18:13,860 INFO L226 Difference]: Without dead ends: 54 [2024-11-28 03:18:13,863 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 03:18:13,868 INFO L435 NwaCegarLoop]: 52 mSDtfsCounter, 9 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:18:13,868 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 79 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:18:13,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-11-28 03:18:13,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2024-11-28 03:18:13,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 32 states have (on average 1.78125) internal successors, (57), 53 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:18:13,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 57 transitions. [2024-11-28 03:18:13,913 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 57 transitions. Word has length 6 [2024-11-28 03:18:13,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:18:13,913 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 57 transitions. [2024-11-28 03:18:13,913 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:18:13,913 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 57 transitions. [2024-11-28 03:18:13,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-28 03:18:13,914 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:18:13,914 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-28 03:18:13,914 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 03:18:13,916 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-11-28 03:18:13,916 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:18:13,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1037518443, now seen corresponding path program 1 times [2024-11-28 03:18:13,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:18:13,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456643588] [2024-11-28 03:18:13,917 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:18:13,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:18:13,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:18:14,117 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 03:18:14,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:18:14,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456643588] [2024-11-28 03:18:14,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456643588] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:18:14,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:18:14,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 03:18:14,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62259992] [2024-11-28 03:18:14,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:18:14,118 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:18:14,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:18:14,119 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:18:14,119 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:18:14,119 INFO L87 Difference]: Start difference. First operand 54 states and 57 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:18:14,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:18:14,196 INFO L93 Difference]: Finished difference Result 51 states and 54 transitions. [2024-11-28 03:18:14,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:18:14,197 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-11-28 03:18:14,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:18:14,197 INFO L225 Difference]: With dead ends: 51 [2024-11-28 03:18:14,197 INFO L226 Difference]: Without dead ends: 51 [2024-11-28 03:18:14,198 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 03:18:14,198 INFO L435 NwaCegarLoop]: 47 mSDtfsCounter, 8 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:18:14,199 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 75 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:18:14,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-11-28 03:18:14,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2024-11-28 03:18:14,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 32 states have (on average 1.6875) internal successors, (54), 50 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:18:14,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 54 transitions. [2024-11-28 03:18:14,203 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 54 transitions. Word has length 6 [2024-11-28 03:18:14,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:18:14,203 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 54 transitions. [2024-11-28 03:18:14,203 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:18:14,204 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 54 transitions. [2024-11-28 03:18:14,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-28 03:18:14,204 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:18:14,204 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:18:14,204 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 03:18:14,204 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-11-28 03:18:14,205 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:18:14,205 INFO L85 PathProgramCache]: Analyzing trace with hash 2101067443, now seen corresponding path program 1 times [2024-11-28 03:18:14,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:18:14,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405484963] [2024-11-28 03:18:14,205 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:18:14,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:18:14,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:18:14,274 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 03:18:14,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:18:14,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405484963] [2024-11-28 03:18:14,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405484963] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:18:14,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:18:14,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:18:14,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277397071] [2024-11-28 03:18:14,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:18:14,276 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:18:14,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:18:14,277 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:18:14,277 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:18:14,277 INFO L87 Difference]: Start difference. First operand 51 states and 54 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:18:14,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:18:14,299 INFO L93 Difference]: Finished difference Result 62 states and 66 transitions. [2024-11-28 03:18:14,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:18:14,300 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-28 03:18:14,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:18:14,302 INFO L225 Difference]: With dead ends: 62 [2024-11-28 03:18:14,304 INFO L226 Difference]: Without dead ends: 62 [2024-11-28 03:18:14,304 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 03:18:14,305 INFO L435 NwaCegarLoop]: 52 mSDtfsCounter, 11 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:18:14,305 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 101 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:18:14,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-11-28 03:18:14,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 52. [2024-11-28 03:18:14,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 33 states have (on average 1.6666666666666667) internal successors, (55), 51 states have internal predecessors, (55), 0 states have call successors, (0), 0 states 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 03:18:14,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 55 transitions. [2024-11-28 03:18:14,311 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 55 transitions. Word has length 7 [2024-11-28 03:18:14,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:18:14,312 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 55 transitions. [2024-11-28 03:18:14,312 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:18:14,312 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 55 transitions. [2024-11-28 03:18:14,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-28 03:18:14,312 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:18:14,313 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:18:14,313 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 03:18:14,313 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-11-28 03:18:14,313 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:18:14,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1519983918, now seen corresponding path program 1 times [2024-11-28 03:18:14,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:18:14,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422942957] [2024-11-28 03:18:14,314 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:18:14,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:18:14,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:18:14,414 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 03:18:14,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:18:14,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422942957] [2024-11-28 03:18:14,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422942957] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:18:14,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:18:14,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:18:14,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427131102] [2024-11-28 03:18:14,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:18:14,417 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:18:14,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:18:14,418 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:18:14,418 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:18:14,418 INFO L87 Difference]: Start difference. First operand 52 states and 55 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states 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 03:18:14,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:18:14,459 INFO L93 Difference]: Finished difference Result 58 states and 61 transitions. [2024-11-28 03:18:14,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:18:14,460 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 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 10 [2024-11-28 03:18:14,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:18:14,460 INFO L225 Difference]: With dead ends: 58 [2024-11-28 03:18:14,460 INFO L226 Difference]: Without dead ends: 58 [2024-11-28 03:18:14,460 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 03:18:14,461 INFO L435 NwaCegarLoop]: 52 mSDtfsCounter, 0 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:18:14,461 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 96 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:18:14,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-11-28 03:18:14,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2024-11-28 03:18:14,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 39 states have (on average 1.564102564102564) internal successors, (61), 57 states have internal predecessors, (61), 0 states have call successors, (0), 0 states 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 03:18:14,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 61 transitions. [2024-11-28 03:18:14,469 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 61 transitions. Word has length 10 [2024-11-28 03:18:14,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:18:14,469 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 61 transitions. [2024-11-28 03:18:14,469 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states 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 03:18:14,469 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 61 transitions. [2024-11-28 03:18:14,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-28 03:18:14,470 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:18:14,473 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:18:14,473 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 03:18:14,473 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-11-28 03:18:14,473 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:18:14,473 INFO L85 PathProgramCache]: Analyzing trace with hash 973131816, now seen corresponding path program 1 times [2024-11-28 03:18:14,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:18:14,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600861384] [2024-11-28 03:18:14,474 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:18:14,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:18:14,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:18:14,638 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:18:14,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:18:14,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600861384] [2024-11-28 03:18:14,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600861384] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:18:14,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [391604535] [2024-11-28 03:18:14,638 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:18:14,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:18:14,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bf4311-a14d-471a-badd-f8f794bc6a09/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:18:14,645 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bf4311-a14d-471a-badd-f8f794bc6a09/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:18:14,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bf4311-a14d-471a-badd-f8f794bc6a09/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 03:18:14,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:18:14,802 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 03:18:14,806 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:18:14,878 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:18:14,881 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:18:14,932 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:18:14,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [391604535] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:18:14,934 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:18:14,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2024-11-28 03:18:14,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37088354] [2024-11-28 03:18:14,935 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:18:14,936 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:18:14,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:18:14,936 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:18:14,937 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:18:14,938 INFO L87 Difference]: Start difference. First operand 58 states and 61 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:18:14,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:18:14,970 INFO L93 Difference]: Finished difference Result 60 states and 63 transitions. [2024-11-28 03:18:14,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:18:14,971 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-11-28 03:18:14,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:18:14,971 INFO L225 Difference]: With dead ends: 60 [2024-11-28 03:18:14,971 INFO L226 Difference]: Without dead ends: 60 [2024-11-28 03:18:14,972 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 27 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 03:18:14,972 INFO L435 NwaCegarLoop]: 52 mSDtfsCounter, 11 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 111 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 03:18:14,975 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 111 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:18:14,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-11-28 03:18:14,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2024-11-28 03:18:14,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 41 states have (on average 1.5365853658536586) internal successors, (63), 59 states have internal predecessors, (63), 0 states have call successors, (0), 0 states 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 03:18:14,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 63 transitions. [2024-11-28 03:18:14,984 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 63 transitions. Word has length 15 [2024-11-28 03:18:14,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:18:14,987 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 63 transitions. [2024-11-28 03:18:14,987 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:18:14,987 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 63 transitions. [2024-11-28 03:18:14,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-28 03:18:14,988 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:18:14,988 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-28 03:18:14,998 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bf4311-a14d-471a-badd-f8f794bc6a09/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 03:18:15,188 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bf4311-a14d-471a-badd-f8f794bc6a09/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:18:15,189 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-11-28 03:18:15,191 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:18:15,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1281123431, now seen corresponding path program 1 times [2024-11-28 03:18:15,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:18:15,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066491303] [2024-11-28 03:18:15,192 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:18:15,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:18:15,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:18:15,511 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:18:15,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:18:15,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066491303] [2024-11-28 03:18:15,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066491303] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:18:15,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1547063745] [2024-11-28 03:18:15,512 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:18:15,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:18:15,512 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bf4311-a14d-471a-badd-f8f794bc6a09/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:18:15,516 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bf4311-a14d-471a-badd-f8f794bc6a09/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:18:15,520 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bf4311-a14d-471a-badd-f8f794bc6a09/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 03:18:15,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:18:15,649 INFO L256 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 03:18:15,650 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:18:15,678 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 03:18:15,738 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-11-28 03:18:15,738 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 12 treesize of output 14 [2024-11-28 03:18:15,777 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:18:15,777 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:18:15,845 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:18:15,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1547063745] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:18:15,846 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:18:15,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 4 [2024-11-28 03:18:15,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366165992] [2024-11-28 03:18:15,846 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:18:15,846 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:18:15,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:18:15,847 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:18:15,848 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:18:15,849 INFO L87 Difference]: Start difference. First operand 60 states and 63 transitions. Second operand has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:18:15,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:18:15,959 INFO L93 Difference]: Finished difference Result 59 states and 62 transitions. [2024-11-28 03:18:15,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:18:15,959 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2024-11-28 03:18:15,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:18:15,960 INFO L225 Difference]: With dead ends: 59 [2024-11-28 03:18:15,960 INFO L226 Difference]: Without dead ends: 59 [2024-11-28 03:18:15,960 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 35 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:18:15,961 INFO L435 NwaCegarLoop]: 45 mSDtfsCounter, 5 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:18:15,962 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 91 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:18:15,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-11-28 03:18:15,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2024-11-28 03:18:15,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 41 states have (on average 1.5121951219512195) internal successors, (62), 58 states have internal predecessors, (62), 0 states have call successors, (0), 0 states 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 03:18:15,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 62 transitions. [2024-11-28 03:18:15,966 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 62 transitions. Word has length 18 [2024-11-28 03:18:15,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:18:15,967 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 62 transitions. [2024-11-28 03:18:15,967 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:18:15,967 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 62 transitions. [2024-11-28 03:18:15,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-28 03:18:15,967 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:18:15,968 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-28 03:18:15,977 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bf4311-a14d-471a-badd-f8f794bc6a09/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 03:18:16,168 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bf4311-a14d-471a-badd-f8f794bc6a09/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-28 03:18:16,168 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-11-28 03:18:16,169 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:18:16,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1281123430, now seen corresponding path program 1 times [2024-11-28 03:18:16,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:18:16,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923404183] [2024-11-28 03:18:16,169 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:18:16,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:18:16,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:18:16,514 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:18:16,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:18:16,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923404183] [2024-11-28 03:18:16,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923404183] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:18:16,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [226853854] [2024-11-28 03:18:16,515 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:18:16,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:18:16,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bf4311-a14d-471a-badd-f8f794bc6a09/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:18:16,519 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bf4311-a14d-471a-badd-f8f794bc6a09/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:18:16,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bf4311-a14d-471a-badd-f8f794bc6a09/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 03:18:16,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:18:16,647 INFO L256 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-28 03:18:16,650 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:18:16,677 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 03:18:16,685 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 03:18:16,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:18:16,859 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 03:18:16,872 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-28 03:18:16,872 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 03:18:16,935 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:18:16,935 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:18:17,323 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:18:17,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [226853854] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:18:17,324 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:18:17,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 11 [2024-11-28 03:18:17,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888306302] [2024-11-28 03:18:17,324 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:18:17,324 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 03:18:17,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:18:17,325 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 03:18:17,325 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-11-28 03:18:17,325 INFO L87 Difference]: Start difference. First operand 59 states and 62 transitions. Second operand has 12 states, 11 states have (on average 4.363636363636363) internal successors, (48), 12 states have internal predecessors, (48), 0 states have call successors, (0), 0 states 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 03:18:17,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:18:17,546 INFO L93 Difference]: Finished difference Result 58 states and 61 transitions. [2024-11-28 03:18:17,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:18:17,546 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.363636363636363) internal successors, (48), 12 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2024-11-28 03:18:17,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:18:17,547 INFO L225 Difference]: With dead ends: 58 [2024-11-28 03:18:17,547 INFO L226 Difference]: Without dead ends: 58 [2024-11-28 03:18:17,548 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2024-11-28 03:18:17,548 INFO L435 NwaCegarLoop]: 45 mSDtfsCounter, 20 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:18:17,549 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 177 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:18:17,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-11-28 03:18:17,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2024-11-28 03:18:17,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 41 states have (on average 1.4878048780487805) internal successors, (61), 57 states have internal predecessors, (61), 0 states have call successors, (0), 0 states 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 03:18:17,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 61 transitions. [2024-11-28 03:18:17,553 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 61 transitions. Word has length 18 [2024-11-28 03:18:17,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:18:17,553 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 61 transitions. [2024-11-28 03:18:17,553 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.363636363636363) internal successors, (48), 12 states have internal predecessors, (48), 0 states have call successors, (0), 0 states 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 03:18:17,553 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 61 transitions. [2024-11-28 03:18:17,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-28 03:18:17,554 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:18:17,554 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:18:17,563 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bf4311-a14d-471a-badd-f8f794bc6a09/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 03:18:17,758 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bf4311-a14d-471a-badd-f8f794bc6a09/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:18:17,759 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-11-28 03:18:17,759 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:18:17,759 INFO L85 PathProgramCache]: Analyzing trace with hash -1335124835, now seen corresponding path program 2 times [2024-11-28 03:18:17,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:18:17,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131977578] [2024-11-28 03:18:17,760 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:18:17,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:18:17,778 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 03:18:17,778 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:18:17,802 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-28 03:18:17,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:18:17,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131977578] [2024-11-28 03:18:17,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131977578] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:18:17,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:18:17,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:18:17,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438117451] [2024-11-28 03:18:17,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:18:17,804 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:18:17,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:18:17,804 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:18:17,804 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:18:17,804 INFO L87 Difference]: Start difference. First operand 58 states and 61 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states 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 03:18:17,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:18:17,819 INFO L93 Difference]: Finished difference Result 84 states and 88 transitions. [2024-11-28 03:18:17,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:18:17,820 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 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 23 [2024-11-28 03:18:17,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:18:17,821 INFO L225 Difference]: With dead ends: 84 [2024-11-28 03:18:17,821 INFO L226 Difference]: Without dead ends: 84 [2024-11-28 03:18:17,821 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 03:18:17,822 INFO L435 NwaCegarLoop]: 49 mSDtfsCounter, 28 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:18:17,822 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 132 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:18:17,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-11-28 03:18:17,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 59. [2024-11-28 03:18:17,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 42 states have (on average 1.4761904761904763) internal successors, (62), 58 states have internal predecessors, (62), 0 states have call successors, (0), 0 states 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 03:18:17,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 62 transitions. [2024-11-28 03:18:17,828 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 62 transitions. Word has length 23 [2024-11-28 03:18:17,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:18:17,828 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 62 transitions. [2024-11-28 03:18:17,829 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states 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 03:18:17,829 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 62 transitions. [2024-11-28 03:18:17,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-28 03:18:17,829 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:18:17,829 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:18:17,829 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 03:18:17,830 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-11-28 03:18:17,830 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:18:17,830 INFO L85 PathProgramCache]: Analyzing trace with hash 1560800129, now seen corresponding path program 1 times [2024-11-28 03:18:17,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:18:17,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791578196] [2024-11-28 03:18:17,830 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:18:17,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:18:17,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:18:17,970 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:18:17,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:18:17,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791578196] [2024-11-28 03:18:17,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791578196] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:18:17,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1715335312] [2024-11-28 03:18:17,971 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:18:17,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:18:17,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bf4311-a14d-471a-badd-f8f794bc6a09/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:18:17,973 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bf4311-a14d-471a-badd-f8f794bc6a09/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:18:17,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bf4311-a14d-471a-badd-f8f794bc6a09/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 03:18:18,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:18:18,108 INFO L256 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 03:18:18,109 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:18:18,136 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:18:18,136 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:18:18,165 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:18:18,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1715335312] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:18:18,165 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:18:18,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 4 [2024-11-28 03:18:18,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691862119] [2024-11-28 03:18:18,166 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:18:18,166 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:18:18,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:18:18,166 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:18:18,166 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:18:18,167 INFO L87 Difference]: Start difference. First operand 59 states and 62 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:18:18,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:18:18,205 INFO L93 Difference]: Finished difference Result 59 states and 61 transitions. [2024-11-28 03:18:18,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:18:18,206 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2024-11-28 03:18:18,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:18:18,206 INFO L225 Difference]: With dead ends: 59 [2024-11-28 03:18:18,206 INFO L226 Difference]: Without dead ends: 59 [2024-11-28 03:18:18,206 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 48 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 03:18:18,207 INFO L435 NwaCegarLoop]: 46 mSDtfsCounter, 4 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:18:18,207 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 127 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:18:18,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-11-28 03:18:18,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2024-11-28 03:18:18,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 42 states have (on average 1.4523809523809523) internal successors, (61), 58 states have internal predecessors, (61), 0 states have call successors, (0), 0 states 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 03:18:18,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 61 transitions. [2024-11-28 03:18:18,210 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 61 transitions. Word has length 24 [2024-11-28 03:18:18,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:18:18,210 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 61 transitions. [2024-11-28 03:18:18,211 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:18:18,211 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 61 transitions. [2024-11-28 03:18:18,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-28 03:18:18,211 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:18:18,211 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:18:18,220 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bf4311-a14d-471a-badd-f8f794bc6a09/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 03:18:18,412 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bf4311-a14d-471a-badd-f8f794bc6a09/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:18:18,412 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-11-28 03:18:18,412 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:18:18,412 INFO L85 PathProgramCache]: Analyzing trace with hash -2117289125, now seen corresponding path program 1 times [2024-11-28 03:18:18,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:18:18,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382488610] [2024-11-28 03:18:18,413 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:18:18,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:18:18,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:18:18,671 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 03:18:18,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:18:18,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382488610] [2024-11-28 03:18:18,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382488610] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:18:18,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1312351507] [2024-11-28 03:18:18,672 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:18:18,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:18:18,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bf4311-a14d-471a-badd-f8f794bc6a09/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:18:18,674 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bf4311-a14d-471a-badd-f8f794bc6a09/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:18:18,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bf4311-a14d-471a-badd-f8f794bc6a09/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 03:18:18,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:18:18,802 INFO L256 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-28 03:18:18,804 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:18:18,810 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 03:18:18,831 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-28 03:18:18,832 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 13 [2024-11-28 03:18:18,892 INFO L349 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2024-11-28 03:18:18,894 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 16 treesize of output 22 [2024-11-28 03:18:18,999 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 03:18:18,999 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:18:19,122 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 03:18:19,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1312351507] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:18:19,122 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:18:19,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 8 [2024-11-28 03:18:19,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547617228] [2024-11-28 03:18:19,122 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:18:19,123 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 03:18:19,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:18:19,123 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 03:18:19,123 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-28 03:18:19,123 INFO L87 Difference]: Start difference. First operand 59 states and 61 transitions. Second operand has 9 states, 8 states have (on average 4.875) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states 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 03:18:19,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:18:19,217 INFO L93 Difference]: Finished difference Result 77 states and 80 transitions. [2024-11-28 03:18:19,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:18:19,217 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.875) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2024-11-28 03:18:19,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:18:19,218 INFO L225 Difference]: With dead ends: 77 [2024-11-28 03:18:19,218 INFO L226 Difference]: Without dead ends: 77 [2024-11-28 03:18:19,218 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 47 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2024-11-28 03:18:19,219 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 131 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:18:19,219 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 75 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:18:19,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2024-11-28 03:18:19,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 60. [2024-11-28 03:18:19,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 44 states have (on average 1.4318181818181819) internal successors, (63), 59 states have internal predecessors, (63), 0 states have call successors, (0), 0 states 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 03:18:19,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 63 transitions. [2024-11-28 03:18:19,223 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 63 transitions. Word has length 25 [2024-11-28 03:18:19,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:18:19,223 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 63 transitions. [2024-11-28 03:18:19,223 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.875) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states 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 03:18:19,223 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 63 transitions. [2024-11-28 03:18:19,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-28 03:18:19,224 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:18:19,224 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:18:19,233 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bf4311-a14d-471a-badd-f8f794bc6a09/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-28 03:18:19,428 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bf4311-a14d-471a-badd-f8f794bc6a09/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:18:19,428 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-11-28 03:18:19,429 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:18:19,429 INFO L85 PathProgramCache]: Analyzing trace with hash -2117289124, now seen corresponding path program 1 times [2024-11-28 03:18:19,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:18:19,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079948930] [2024-11-28 03:18:19,429 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:18:19,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:18:19,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:18:19,836 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:18:19,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:18:19,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079948930] [2024-11-28 03:18:19,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079948930] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:18:19,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1014309482] [2024-11-28 03:18:19,837 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:18:19,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:18:19,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bf4311-a14d-471a-badd-f8f794bc6a09/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:18:19,839 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bf4311-a14d-471a-badd-f8f794bc6a09/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:18:19,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bf4311-a14d-471a-badd-f8f794bc6a09/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 03:18:19,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:18:19,979 INFO L256 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-28 03:18:19,981 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:18:19,997 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 03:18:20,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:18:20,048 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 03:18:20,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:18:20,130 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 03:18:20,224 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 03:18:20,224 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:18:20,706 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 03:18:20,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1014309482] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:18:20,706 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:18:20,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 4] total 13 [2024-11-28 03:18:20,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193123823] [2024-11-28 03:18:20,707 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:18:20,707 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-28 03:18:20,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:18:20,708 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-28 03:18:20,708 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2024-11-28 03:18:20,708 INFO L87 Difference]: Start difference. First operand 60 states and 63 transitions. Second operand has 14 states, 13 states have (on average 5.461538461538462) internal successors, (71), 14 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:18:20,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:18:20,886 INFO L93 Difference]: Finished difference Result 71 states and 74 transitions. [2024-11-28 03:18:20,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 03:18:20,887 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 5.461538461538462) internal successors, (71), 14 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2024-11-28 03:18:20,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:18:20,887 INFO L225 Difference]: With dead ends: 71 [2024-11-28 03:18:20,887 INFO L226 Difference]: Without dead ends: 71 [2024-11-28 03:18:20,888 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2024-11-28 03:18:20,888 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 238 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:18:20,889 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 81 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:18:20,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-11-28 03:18:20,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 56. [2024-11-28 03:18:20,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 44 states have (on average 1.3181818181818181) internal successors, (58), 55 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:18:20,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 58 transitions. [2024-11-28 03:18:20,892 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 58 transitions. Word has length 25 [2024-11-28 03:18:20,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:18:20,892 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 58 transitions. [2024-11-28 03:18:20,893 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 5.461538461538462) internal successors, (71), 14 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:18:20,893 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 58 transitions. [2024-11-28 03:18:20,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-28 03:18:20,893 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:18:20,893 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:18:20,903 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bf4311-a14d-471a-badd-f8f794bc6a09/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-28 03:18:21,097 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bf4311-a14d-471a-badd-f8f794bc6a09/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:18:21,097 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-11-28 03:18:21,098 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:18:21,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1211453402, now seen corresponding path program 1 times [2024-11-28 03:18:21,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:18:21,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800311798] [2024-11-28 03:18:21,098 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:18:21,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:18:21,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:18:21,323 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 03:18:21,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:18:21,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800311798] [2024-11-28 03:18:21,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800311798] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:18:21,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:18:21,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 03:18:21,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330866361] [2024-11-28 03:18:21,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:18:21,324 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 03:18:21,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:18:21,325 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 03:18:21,325 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:18:21,325 INFO L87 Difference]: Start difference. First operand 56 states and 58 transitions. Second operand has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 8 states have internal predecessors, (23), 0 states have call successors, (0), 0 states 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 03:18:21,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:18:21,523 INFO L93 Difference]: Finished difference Result 70 states and 73 transitions. [2024-11-28 03:18:21,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 03:18:21,523 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 8 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2024-11-28 03:18:21,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:18:21,524 INFO L225 Difference]: With dead ends: 70 [2024-11-28 03:18:21,524 INFO L226 Difference]: Without dead ends: 70 [2024-11-28 03:18:21,524 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-28 03:18:21,525 INFO L435 NwaCegarLoop]: 30 mSDtfsCounter, 39 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:18:21,525 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 139 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:18:21,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-11-28 03:18:21,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 57. [2024-11-28 03:18:21,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 45 states have (on average 1.3333333333333333) internal successors, (60), 56 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:18:21,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 60 transitions. [2024-11-28 03:18:21,528 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 60 transitions. Word has length 26 [2024-11-28 03:18:21,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:18:21,528 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 60 transitions. [2024-11-28 03:18:21,528 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 8 states have internal predecessors, (23), 0 states have call successors, (0), 0 states 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 03:18:21,528 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 60 transitions. [2024-11-28 03:18:21,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-28 03:18:21,528 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:18:21,528 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:18:21,529 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-28 03:18:21,529 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-11-28 03:18:21,529 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:18:21,529 INFO L85 PathProgramCache]: Analyzing trace with hash -1211453401, now seen corresponding path program 1 times [2024-11-28 03:18:21,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:18:21,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153139483] [2024-11-28 03:18:21,529 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:18:21,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:18:21,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:18:21,831 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 03:18:21,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:18:21,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153139483] [2024-11-28 03:18:21,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153139483] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:18:21,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:18:21,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 03:18:21,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955837585] [2024-11-28 03:18:21,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:18:21,832 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 03:18:21,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:18:21,833 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 03:18:21,833 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:18:21,834 INFO L87 Difference]: Start difference. First operand 57 states and 60 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:18:22,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:18:22,065 INFO L93 Difference]: Finished difference Result 71 states and 74 transitions. [2024-11-28 03:18:22,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 03:18:22,066 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2024-11-28 03:18:22,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:18:22,066 INFO L225 Difference]: With dead ends: 71 [2024-11-28 03:18:22,066 INFO L226 Difference]: Without dead ends: 71 [2024-11-28 03:18:22,067 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-28 03:18:22,067 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 39 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:18:22,067 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 177 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:18:22,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-11-28 03:18:22,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 57. [2024-11-28 03:18:22,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 45 states have (on average 1.3111111111111111) internal successors, (59), 56 states have internal predecessors, (59), 0 states have call successors, (0), 0 states 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 03:18:22,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 59 transitions. [2024-11-28 03:18:22,073 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 59 transitions. Word has length 26 [2024-11-28 03:18:22,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:18:22,073 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 59 transitions. [2024-11-28 03:18:22,073 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:18:22,073 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 59 transitions. [2024-11-28 03:18:22,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-28 03:18:22,074 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:18:22,074 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:18:22,074 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-28 03:18:22,074 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-11-28 03:18:22,075 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:18:22,075 INFO L85 PathProgramCache]: Analyzing trace with hash 201925151, now seen corresponding path program 1 times [2024-11-28 03:18:22,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:18:22,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325441306] [2024-11-28 03:18:22,075 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:18:22,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:18:22,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:18:22,635 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:18:22,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:18:22,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325441306] [2024-11-28 03:18:22,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325441306] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:18:22,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1910611617] [2024-11-28 03:18:22,636 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:18:22,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:18:22,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bf4311-a14d-471a-badd-f8f794bc6a09/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:18:22,638 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bf4311-a14d-471a-badd-f8f794bc6a09/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:18:22,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bf4311-a14d-471a-badd-f8f794bc6a09/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 03:18:22,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:18:22,934 INFO L256 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-28 03:18:22,937 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:18:22,967 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 03:18:23,060 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-28 03:18:23,061 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 03:18:23,118 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 03:18:23,171 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 03:18:23,204 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-28 03:18:23,205 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 33 [2024-11-28 03:18:23,464 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 21 [2024-11-28 03:18:23,509 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 03:18:23,516 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:18:23,516 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:18:23,661 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 28 treesize of output 20 [2024-11-28 03:18:23,664 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 24 treesize of output 16 [2024-11-28 03:18:23,783 INFO L349 Elim1Store]: treesize reduction 5, result has 70.6 percent of original size [2024-11-28 03:18:23,783 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 21 treesize of output 20 [2024-11-28 03:18:23,850 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_769 Int) (v_ArrVal_770 (Array Int Int))) (= (select (select (store (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| (store (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ 8 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|) v_ArrVal_769)) |c_ULTIMATE.start_dll_create_~head~0#1.base| v_ArrVal_770) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 4)) |c_ULTIMATE.start_dll_create_~head~0#1.base|)) is different from false [2024-11-28 03:18:23,862 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:18:23,863 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 27 treesize of output 33 [2024-11-28 03:18:23,867 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 36 treesize of output 24 [2024-11-28 03:18:23,872 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 03:18:24,784 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2024-11-28 03:18:24,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1910611617] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:18:24,784 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:18:24,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 14] total 35 [2024-11-28 03:18:24,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573025691] [2024-11-28 03:18:24,785 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:18:24,785 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-28 03:18:24,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:18:24,785 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-28 03:18:24,786 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=1070, Unknown=12, NotChecked=66, Total=1260 [2024-11-28 03:18:24,786 INFO L87 Difference]: Start difference. First operand 57 states and 59 transitions. Second operand has 36 states, 35 states have (on average 2.2) internal successors, (77), 36 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:18:25,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:18:25,751 INFO L93 Difference]: Finished difference Result 82 states and 85 transitions. [2024-11-28 03:18:25,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-28 03:18:25,751 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 2.2) internal successors, (77), 36 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2024-11-28 03:18:25,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:18:25,752 INFO L225 Difference]: With dead ends: 82 [2024-11-28 03:18:25,752 INFO L226 Difference]: Without dead ends: 82 [2024-11-28 03:18:25,753 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 39 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=254, Invalid=1808, Unknown=12, NotChecked=88, Total=2162 [2024-11-28 03:18:25,754 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 142 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 710 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 710 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 76 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 03:18:25,754 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 352 Invalid, 802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 710 Invalid, 0 Unknown, 76 Unchecked, 0.5s Time] [2024-11-28 03:18:25,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2024-11-28 03:18:25,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 60. [2024-11-28 03:18:25,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 48 states have (on average 1.3333333333333333) internal successors, (64), 59 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:18:25,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 64 transitions. [2024-11-28 03:18:25,757 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 64 transitions. Word has length 29 [2024-11-28 03:18:25,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:18:25,757 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 64 transitions. [2024-11-28 03:18:25,757 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 2.2) internal successors, (77), 36 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:18:25,757 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 64 transitions. [2024-11-28 03:18:25,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-28 03:18:25,758 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:18:25,758 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:18:25,768 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bf4311-a14d-471a-badd-f8f794bc6a09/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-28 03:18:25,958 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bf4311-a14d-471a-badd-f8f794bc6a09/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-28 03:18:25,959 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-11-28 03:18:25,959 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:18:25,959 INFO L85 PathProgramCache]: Analyzing trace with hash 201925152, now seen corresponding path program 1 times [2024-11-28 03:18:25,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:18:25,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280183210] [2024-11-28 03:18:25,959 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:18:25,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:18:25,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:18:27,050 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:18:27,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:18:27,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280183210] [2024-11-28 03:18:27,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280183210] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:18:27,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1079603306] [2024-11-28 03:18:27,051 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:18:27,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:18:27,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bf4311-a14d-471a-badd-f8f794bc6a09/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:18:27,053 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bf4311-a14d-471a-badd-f8f794bc6a09/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:18:27,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bf4311-a14d-471a-badd-f8f794bc6a09/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 03:18:27,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:18:27,265 INFO L256 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 65 conjuncts are in the unsatisfiable core [2024-11-28 03:18:27,268 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:18:27,298 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 03:18:27,302 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 03:18:27,445 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-28 03:18:27,445 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 03:18:27,455 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 03:18:27,531 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 03:18:27,537 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 03:18:27,592 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 19 treesize of output 18 [2024-11-28 03:18:27,606 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 03:18:27,713 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-28 03:18:27,714 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2024-11-28 03:18:27,723 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 16 [2024-11-28 03:18:28,094 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 59 treesize of output 35 [2024-11-28 03:18:28,162 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 03:18:28,167 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 15 treesize of output 7 [2024-11-28 03:18:28,178 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:18:28,178 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:18:28,433 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 64 treesize of output 48 [2024-11-28 03:18:28,436 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 52 treesize of output 36 [2024-11-28 03:18:28,616 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 4))) (and (forall ((v_ArrVal_878 (Array Int Int)) (v_ArrVal_877 (Array Int Int))) (<= (+ (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_ArrVal_877) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) .cse0) 12) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_ArrVal_878) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) .cse0)))) (forall ((v_ArrVal_877 (Array Int Int))) (<= 0 (+ (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_ArrVal_877) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) .cse0) 8))))) is different from false [2024-11-28 03:18:28,639 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (+ 8 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|))) (let ((.cse0 (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| (store (select |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) .cse2 0))) (.cse1 (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 4))) (and (forall ((v_ArrVal_878 (Array Int Int)) (v_ArrVal_877 (Array Int Int)) (v_ArrVal_875 Int)) (<= (+ (select (select (store .cse0 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_ArrVal_877) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) .cse1) 12) (select |c_#length| (select (select (store (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| (store (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) .cse2 v_ArrVal_875)) |c_ULTIMATE.start_dll_create_~head~0#1.base| v_ArrVal_878) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) .cse1)))) (forall ((v_ArrVal_877 (Array Int Int))) (<= 0 (+ (select (select (store .cse0 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_ArrVal_877) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) .cse1) 8)))))) is different from false [2024-11-28 03:18:28,655 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:18:28,655 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 55 treesize of output 61 [2024-11-28 03:18:28,670 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:18:28,671 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 40 treesize of output 46 [2024-11-28 03:18:28,676 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 62 treesize of output 50 [2024-11-28 03:18:28,684 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:18:28,684 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 106 treesize of output 82 [2024-11-28 03:18:28,699 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 15 treesize of output 11 [2024-11-28 03:18:28,703 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 03:18:28,714 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:18:28,714 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 35 [2024-11-28 03:18:28,717 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 03:18:28,721 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:18:28,721 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 32 treesize of output 14 [2024-11-28 03:18:29,057 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2024-11-28 03:18:29,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1079603306] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:18:29,058 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:18:29,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 14] total 39 [2024-11-28 03:18:29,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707867232] [2024-11-28 03:18:29,058 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:18:29,059 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-28 03:18:29,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:18:29,059 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-28 03:18:29,060 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=1285, Unknown=2, NotChecked=146, Total=1560 [2024-11-28 03:18:29,060 INFO L87 Difference]: Start difference. First operand 60 states and 64 transitions. Second operand has 40 states, 39 states have (on average 2.051282051282051) internal successors, (80), 40 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:18:30,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:18:30,764 INFO L93 Difference]: Finished difference Result 85 states and 88 transitions. [2024-11-28 03:18:30,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-28 03:18:30,764 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 2.051282051282051) internal successors, (80), 40 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2024-11-28 03:18:30,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:18:30,765 INFO L225 Difference]: With dead ends: 85 [2024-11-28 03:18:30,765 INFO L226 Difference]: Without dead ends: 85 [2024-11-28 03:18:30,766 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 507 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=331, Invalid=2327, Unknown=2, NotChecked=202, Total=2862 [2024-11-28 03:18:30,767 INFO L435 NwaCegarLoop]: 29 mSDtfsCounter, 103 mSDsluCounter, 585 mSDsCounter, 0 mSdLazyCounter, 853 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 614 SdHoareTripleChecker+Invalid, 1020 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 853 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 158 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-28 03:18:30,767 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 614 Invalid, 1020 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 853 Invalid, 0 Unknown, 158 Unchecked, 0.8s Time] [2024-11-28 03:18:30,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-11-28 03:18:30,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 60. [2024-11-28 03:18:30,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 48 states have (on average 1.3125) internal successors, (63), 59 states have internal predecessors, (63), 0 states have call successors, (0), 0 states 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 03:18:30,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 63 transitions. [2024-11-28 03:18:30,770 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 63 transitions. Word has length 29 [2024-11-28 03:18:30,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:18:30,770 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 63 transitions. [2024-11-28 03:18:30,770 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 2.051282051282051) internal successors, (80), 40 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:18:30,770 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 63 transitions. [2024-11-28 03:18:30,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-28 03:18:30,771 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:18:30,771 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:18:30,781 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bf4311-a14d-471a-badd-f8f794bc6a09/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-28 03:18:30,972 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bf4311-a14d-471a-badd-f8f794bc6a09/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-28 03:18:30,972 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-11-28 03:18:30,973 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:18:30,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1964717424, now seen corresponding path program 1 times [2024-11-28 03:18:30,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:18:30,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573398283] [2024-11-28 03:18:30,973 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:18:30,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:18:30,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:18:31,129 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 03:18:31,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:18:31,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573398283] [2024-11-28 03:18:31,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573398283] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:18:31,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:18:31,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 03:18:31,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306486639] [2024-11-28 03:18:31,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:18:31,131 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 03:18:31,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:18:31,131 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 03:18:31,132 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:18:31,132 INFO L87 Difference]: Start difference. First operand 60 states and 63 transitions. Second operand has 8 states, 7 states have (on average 4.142857142857143) internal successors, (29), 8 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:18:31,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:18:31,243 INFO L93 Difference]: Finished difference Result 68 states and 71 transitions. [2024-11-28 03:18:31,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 03:18:31,243 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.142857142857143) internal successors, (29), 8 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2024-11-28 03:18:31,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:18:31,244 INFO L225 Difference]: With dead ends: 68 [2024-11-28 03:18:31,244 INFO L226 Difference]: Without dead ends: 68 [2024-11-28 03:18:31,244 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-28 03:18:31,244 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 30 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:18:31,245 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 203 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:18:31,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-11-28 03:18:31,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 62. [2024-11-28 03:18:31,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 50 states have (on average 1.3) internal successors, (65), 61 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:18:31,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 65 transitions. [2024-11-28 03:18:31,249 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 65 transitions. Word has length 30 [2024-11-28 03:18:31,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:18:31,249 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 65 transitions. [2024-11-28 03:18:31,249 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.142857142857143) internal successors, (29), 8 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:18:31,249 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 65 transitions. [2024-11-28 03:18:31,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-28 03:18:31,250 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:18:31,250 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:18:31,250 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-28 03:18:31,250 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-11-28 03:18:31,251 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:18:31,251 INFO L85 PathProgramCache]: Analyzing trace with hash 776698112, now seen corresponding path program 1 times [2024-11-28 03:18:31,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:18:31,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317306648] [2024-11-28 03:18:31,251 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:18:31,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:18:31,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:18:31,424 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 03:18:31,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:18:31,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317306648] [2024-11-28 03:18:31,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317306648] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:18:31,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:18:31,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 03:18:31,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203770044] [2024-11-28 03:18:31,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:18:31,425 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 03:18:31,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:18:31,425 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 03:18:31,425 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:18:31,425 INFO L87 Difference]: Start difference. First operand 62 states and 65 transitions. Second operand has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 8 states have internal predecessors, (30), 0 states have call successors, (0), 0 states 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 03:18:31,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:18:31,598 INFO L93 Difference]: Finished difference Result 67 states and 70 transitions. [2024-11-28 03:18:31,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 03:18:31,599 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 8 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2024-11-28 03:18:31,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:18:31,599 INFO L225 Difference]: With dead ends: 67 [2024-11-28 03:18:31,599 INFO L226 Difference]: Without dead ends: 67 [2024-11-28 03:18:31,600 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-28 03:18:31,601 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 29 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:18:31,601 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 183 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:18:31,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-11-28 03:18:31,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 63. [2024-11-28 03:18:31,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 51 states have (on average 1.2941176470588236) internal successors, (66), 62 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:18:31,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 66 transitions. [2024-11-28 03:18:31,603 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 66 transitions. Word has length 31 [2024-11-28 03:18:31,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:18:31,606 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 66 transitions. [2024-11-28 03:18:31,606 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 8 states have internal predecessors, (30), 0 states have call successors, (0), 0 states 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 03:18:31,606 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 66 transitions. [2024-11-28 03:18:31,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-28 03:18:31,607 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:18:31,607 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-28 03:18:31,607 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-28 03:18:31,607 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-11-28 03:18:31,607 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:18:31,607 INFO L85 PathProgramCache]: Analyzing trace with hash -1692162190, now seen corresponding path program 1 times [2024-11-28 03:18:31,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:18:31,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638058528] [2024-11-28 03:18:31,607 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:18:31,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:18:31,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:18:31,706 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-28 03:18:31,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:18:31,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638058528] [2024-11-28 03:18:31,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638058528] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:18:31,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:18:31,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:18:31,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991386933] [2024-11-28 03:18:31,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:18:31,708 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:18:31,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:18:31,709 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:18:31,709 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:18:31,709 INFO L87 Difference]: Start difference. First operand 63 states and 66 transitions. Second operand has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:18:31,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:18:31,782 INFO L93 Difference]: Finished difference Result 62 states and 65 transitions. [2024-11-28 03:18:31,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:18:31,782 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2024-11-28 03:18:31,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:18:31,783 INFO L225 Difference]: With dead ends: 62 [2024-11-28 03:18:31,783 INFO L226 Difference]: Without dead ends: 62 [2024-11-28 03:18:31,783 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:18:31,784 INFO L435 NwaCegarLoop]: 37 mSDtfsCounter, 10 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:18:31,784 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 96 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:18:31,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-11-28 03:18:31,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2024-11-28 03:18:31,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 51 states have (on average 1.2745098039215685) internal successors, (65), 61 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:18:31,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 65 transitions. [2024-11-28 03:18:31,789 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 65 transitions. Word has length 32 [2024-11-28 03:18:31,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:18:31,789 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 65 transitions. [2024-11-28 03:18:31,789 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:18:31,789 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 65 transitions. [2024-11-28 03:18:31,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-28 03:18:31,789 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:18:31,789 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-28 03:18:31,790 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-28 03:18:31,790 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-11-28 03:18:31,790 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:18:31,790 INFO L85 PathProgramCache]: Analyzing trace with hash -917420221, now seen corresponding path program 1 times [2024-11-28 03:18:31,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:18:31,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464421390] [2024-11-28 03:18:31,790 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:18:31,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:18:31,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:18:32,049 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 03:18:32,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:18:32,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464421390] [2024-11-28 03:18:32,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464421390] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:18:32,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1168838769] [2024-11-28 03:18:32,049 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:18:32,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:18:32,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bf4311-a14d-471a-badd-f8f794bc6a09/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:18:32,051 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bf4311-a14d-471a-badd-f8f794bc6a09/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:18:32,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bf4311-a14d-471a-badd-f8f794bc6a09/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 03:18:32,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:18:32,213 INFO L256 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 03:18:32,215 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:18:32,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:18:32,331 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 03:18:32,333 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-28 03:18:32,334 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:18:32,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1168838769] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:18:32,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:18:32,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 13 [2024-11-28 03:18:32,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219955355] [2024-11-28 03:18:32,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:18:32,336 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 03:18:32,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:18:32,336 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 03:18:32,337 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-11-28 03:18:32,337 INFO L87 Difference]: Start difference. First operand 62 states and 65 transitions. Second operand has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:18:32,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:18:32,433 INFO L93 Difference]: Finished difference Result 61 states and 64 transitions. [2024-11-28 03:18:32,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:18:32,433 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2024-11-28 03:18:32,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:18:32,434 INFO L225 Difference]: With dead ends: 61 [2024-11-28 03:18:32,434 INFO L226 Difference]: Without dead ends: 61 [2024-11-28 03:18:32,434 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2024-11-28 03:18:32,434 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 35 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:18:32,435 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 80 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:18:32,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-11-28 03:18:32,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2024-11-28 03:18:32,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 51 states have (on average 1.2549019607843137) internal successors, (64), 60 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:18:32,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 64 transitions. [2024-11-28 03:18:32,437 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 64 transitions. Word has length 33 [2024-11-28 03:18:32,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:18:32,437 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 64 transitions. [2024-11-28 03:18:32,437 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:18:32,437 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 64 transitions. [2024-11-28 03:18:32,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-28 03:18:32,438 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:18:32,438 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-28 03:18:32,449 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bf4311-a14d-471a-badd-f8f794bc6a09/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-28 03:18:32,642 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bf4311-a14d-471a-badd-f8f794bc6a09/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:18:32,642 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-11-28 03:18:32,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:18:32,643 INFO L85 PathProgramCache]: Analyzing trace with hash -1988841764, now seen corresponding path program 1 times [2024-11-28 03:18:32,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:18:32,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771508435] [2024-11-28 03:18:32,643 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:18:32,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:18:32,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:18:32,739 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-28 03:18:32,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:18:32,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771508435] [2024-11-28 03:18:32,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771508435] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:18:32,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:18:32,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:18:32,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850137837] [2024-11-28 03:18:32,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:18:32,740 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:18:32,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:18:32,740 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:18:32,740 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:18:32,740 INFO L87 Difference]: Start difference. First operand 61 states and 64 transitions. Second operand has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:18:32,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:18:32,787 INFO L93 Difference]: Finished difference Result 59 states and 62 transitions. [2024-11-28 03:18:32,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:18:32,788 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2024-11-28 03:18:32,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:18:32,788 INFO L225 Difference]: With dead ends: 59 [2024-11-28 03:18:32,788 INFO L226 Difference]: Without dead ends: 59 [2024-11-28 03:18:32,789 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 03:18:32,789 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 42 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:18:32,789 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 41 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:18:32,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-11-28 03:18:32,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2024-11-28 03:18:32,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 51 states have (on average 1.2156862745098038) internal successors, (62), 58 states have internal predecessors, (62), 0 states have call successors, (0), 0 states 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 03:18:32,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 62 transitions. [2024-11-28 03:18:32,791 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 62 transitions. Word has length 36 [2024-11-28 03:18:32,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:18:32,791 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 62 transitions. [2024-11-28 03:18:32,791 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:18:32,792 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 62 transitions. [2024-11-28 03:18:32,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-28 03:18:32,792 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:18:32,792 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-28 03:18:32,792 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-28 03:18:32,792 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-11-28 03:18:32,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:18:32,793 INFO L85 PathProgramCache]: Analyzing trace with hash -16579777, now seen corresponding path program 1 times [2024-11-28 03:18:32,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:18:32,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901963155] [2024-11-28 03:18:32,793 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:18:32,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:18:32,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:18:34,148 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:18:34,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:18:34,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901963155] [2024-11-28 03:18:34,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901963155] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:18:34,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [236675307] [2024-11-28 03:18:34,148 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:18:34,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:18:34,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bf4311-a14d-471a-badd-f8f794bc6a09/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:18:34,150 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bf4311-a14d-471a-badd-f8f794bc6a09/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:18:34,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bf4311-a14d-471a-badd-f8f794bc6a09/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 03:18:34,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:18:34,369 INFO L256 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-11-28 03:18:34,372 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:18:34,376 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-28 03:18:34,460 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-28 03:18:34,460 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-28 03:18:34,508 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 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 03:18:34,551 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 03:18:34,598 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-28 03:18:34,598 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 32 [2024-11-28 03:18:34,822 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 36 treesize of output 20 [2024-11-28 03:18:34,883 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:18:34,883 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 24 [2024-11-28 03:18:35,029 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 16 treesize of output 8 [2024-11-28 03:18:35,058 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:18:35,059 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:18:35,218 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 8 treesize of output 4 [2024-11-28 03:18:35,291 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 21 treesize of output 13 [2024-11-28 03:18:35,457 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1291 (Array Int Int)) (v_ArrVal_1289 Int)) (not (= (select (select (store (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| (store (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ 8 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|) v_ArrVal_1289)) |c_ULTIMATE.start_dll_create_~head~0#1.base| v_ArrVal_1291) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) 4) 0))) is different from false [2024-11-28 03:18:35,465 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:18:35,466 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 26 treesize of output 32 [2024-11-28 03:18:35,471 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:18:35,472 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 33 [2024-11-28 03:18:35,474 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 20 treesize of output 18 [2024-11-28 03:18:35,675 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2024-11-28 03:18:35,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [236675307] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:18:35,676 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:18:35,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 17, 17] total 51 [2024-11-28 03:18:35,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441139694] [2024-11-28 03:18:35,676 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:18:35,676 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-11-28 03:18:35,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:18:35,677 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-11-28 03:18:35,678 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=2274, Unknown=14, NotChecked=96, Total=2550 [2024-11-28 03:18:35,679 INFO L87 Difference]: Start difference. First operand 59 states and 62 transitions. Second operand has 51 states, 51 states have (on average 1.9607843137254901) internal successors, (100), 51 states have internal predecessors, (100), 0 states have call successors, (0), 0 states 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 03:18:37,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:18:37,173 INFO L93 Difference]: Finished difference Result 77 states and 79 transitions. [2024-11-28 03:18:37,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-28 03:18:37,173 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 1.9607843137254901) internal successors, (100), 51 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2024-11-28 03:18:37,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:18:37,174 INFO L225 Difference]: With dead ends: 77 [2024-11-28 03:18:37,174 INFO L226 Difference]: Without dead ends: 75 [2024-11-28 03:18:37,175 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 49 SyntacticMatches, 2 SemanticMatches, 65 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1074 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=393, Invalid=3887, Unknown=14, NotChecked=128, Total=4422 [2024-11-28 03:18:37,175 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 103 mSDsluCounter, 644 mSDsCounter, 0 mSdLazyCounter, 1216 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 665 SdHoareTripleChecker+Invalid, 1305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 76 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-28 03:18:37,176 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 665 Invalid, 1305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1216 Invalid, 0 Unknown, 76 Unchecked, 0.9s Time] [2024-11-28 03:18:37,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-11-28 03:18:37,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 59. [2024-11-28 03:18:37,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 51 states have (on average 1.196078431372549) internal successors, (61), 58 states have internal predecessors, (61), 0 states have call successors, (0), 0 states 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 03:18:37,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 61 transitions. [2024-11-28 03:18:37,180 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 61 transitions. Word has length 38 [2024-11-28 03:18:37,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:18:37,181 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 61 transitions. [2024-11-28 03:18:37,181 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 1.9607843137254901) internal successors, (100), 51 states have internal predecessors, (100), 0 states have call successors, (0), 0 states 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 03:18:37,181 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 61 transitions. [2024-11-28 03:18:37,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-28 03:18:37,182 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:18:37,183 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-28 03:18:37,195 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bf4311-a14d-471a-badd-f8f794bc6a09/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-28 03:18:37,383 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bf4311-a14d-471a-badd-f8f794bc6a09/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:18:37,383 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-11-28 03:18:37,383 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:18:37,383 INFO L85 PathProgramCache]: Analyzing trace with hash 976988400, now seen corresponding path program 1 times [2024-11-28 03:18:37,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:18:37,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884410608] [2024-11-28 03:18:37,384 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:18:37,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:18:37,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:18:38,442 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:18:38,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:18:38,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884410608] [2024-11-28 03:18:38,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884410608] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:18:38,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1686464340] [2024-11-28 03:18:38,442 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:18:38,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:18:38,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bf4311-a14d-471a-badd-f8f794bc6a09/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:18:38,446 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bf4311-a14d-471a-badd-f8f794bc6a09/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:18:38,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bf4311-a14d-471a-badd-f8f794bc6a09/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-28 03:18:38,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:18:38,662 INFO L256 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 77 conjuncts are in the unsatisfiable core [2024-11-28 03:18:38,666 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:18:38,710 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 03:18:38,777 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 03:18:38,824 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 03:18:38,909 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-28 03:18:38,910 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 03:18:38,974 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 03:18:38,995 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 03:18:39,053 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 30 treesize of output 21 [2024-11-28 03:18:39,173 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-28 03:18:39,174 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 1 case distinctions, treesize of input 56 treesize of output 41 [2024-11-28 03:18:39,587 INFO L349 Elim1Store]: treesize reduction 36, result has 36.8 percent of original size [2024-11-28 03:18:39,587 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 58 treesize of output 39 [2024-11-28 03:18:39,899 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 53 treesize of output 45 [2024-11-28 03:18:40,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:18:40,130 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 9 [2024-11-28 03:18:40,207 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 28 treesize of output 8 [2024-11-28 03:18:40,315 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 25 treesize of output 13 [2024-11-28 03:18:40,357 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:18:40,357 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:18:40,851 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 8 treesize of output 4 [2024-11-28 03:18:41,033 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2024-11-28 03:18:41,304 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:18:41,304 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 66 treesize of output 70 [2024-11-28 03:18:41,868 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:18:41,868 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 43 treesize of output 40 [2024-11-28 03:18:41,889 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:18:41,890 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 41 [2024-11-28 03:18:46,817 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:18:46,818 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 47 treesize of output 53 [2024-11-28 03:18:46,824 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 61 treesize of output 57 [2024-11-28 03:18:46,827 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 8 treesize of output 4 [2024-11-28 03:18:46,831 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 47 treesize of output 41 [2024-11-28 03:18:46,842 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 03:18:46,952 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:18:46,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1686464340] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:18:46,952 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:18:46,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 23, 24] total 61 [2024-11-28 03:18:46,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251708915] [2024-11-28 03:18:46,953 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:18:46,953 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2024-11-28 03:18:46,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:18:46,954 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2024-11-28 03:18:46,957 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=3559, Unknown=4, NotChecked=0, Total=3782 [2024-11-28 03:18:46,957 INFO L87 Difference]: Start difference. First operand 59 states and 61 transitions. Second operand has 62 states, 61 states have (on average 1.7704918032786885) internal successors, (108), 62 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:18:51,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:18:51,282 INFO L93 Difference]: Finished difference Result 136 states and 143 transitions. [2024-11-28 03:18:51,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-11-28 03:18:51,285 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 61 states have (on average 1.7704918032786885) internal successors, (108), 62 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2024-11-28 03:18:51,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:18:51,287 INFO L225 Difference]: With dead ends: 136 [2024-11-28 03:18:51,287 INFO L226 Difference]: Without dead ends: 136 [2024-11-28 03:18:51,289 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 2132 ImplicationChecksByTransitivity, 10.1s TimeCoverageRelationStatistics Valid=660, Invalid=8842, Unknown=4, NotChecked=0, Total=9506 [2024-11-28 03:18:51,291 INFO L435 NwaCegarLoop]: 30 mSDtfsCounter, 232 mSDsluCounter, 842 mSDsCounter, 0 mSdLazyCounter, 1679 mSolverCounterSat, 77 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 872 SdHoareTripleChecker+Invalid, 1758 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1679 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-28 03:18:51,291 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [232 Valid, 872 Invalid, 1758 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1679 Invalid, 2 Unknown, 0 Unchecked, 1.7s Time] [2024-11-28 03:18:51,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2024-11-28 03:18:51,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 66. [2024-11-28 03:18:51,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 58 states have (on average 1.206896551724138) internal successors, (70), 65 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:18:51,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 70 transitions. [2024-11-28 03:18:51,295 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 70 transitions. Word has length 39 [2024-11-28 03:18:51,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:18:51,295 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 70 transitions. [2024-11-28 03:18:51,295 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 61 states have (on average 1.7704918032786885) internal successors, (108), 62 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:18:51,296 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 70 transitions. [2024-11-28 03:18:51,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-28 03:18:51,296 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:18:51,296 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-28 03:18:51,306 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bf4311-a14d-471a-badd-f8f794bc6a09/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-28 03:18:51,500 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bf4311-a14d-471a-badd-f8f794bc6a09/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:18:51,500 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-11-28 03:18:51,502 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:18:51,502 INFO L85 PathProgramCache]: Analyzing trace with hash 976988401, now seen corresponding path program 1 times [2024-11-28 03:18:51,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:18:51,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772775989] [2024-11-28 03:18:51,502 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:18:51,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:18:51,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:18:52,549 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:18:52,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:18:52,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772775989] [2024-11-28 03:18:52,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772775989] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:18:52,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1291632125] [2024-11-28 03:18:52,550 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:18:52,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:18:52,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bf4311-a14d-471a-badd-f8f794bc6a09/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:18:52,552 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bf4311-a14d-471a-badd-f8f794bc6a09/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:18:52,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bf4311-a14d-471a-badd-f8f794bc6a09/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-28 03:18:52,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:18:52,760 INFO L256 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 79 conjuncts are in the unsatisfiable core [2024-11-28 03:18:52,775 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:18:52,783 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 03:18:52,792 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 03:18:52,922 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-28 03:18:52,923 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 03:18:52,931 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 03:18:52,995 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 03:18:53,004 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 03:18:53,052 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 19 treesize of output 18 [2024-11-28 03:18:53,058 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 03:18:53,113 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-28 03:18:53,113 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2024-11-28 03:18:53,118 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 16 [2024-11-28 03:18:53,468 INFO L349 Elim1Store]: treesize reduction 12, result has 50.0 percent of original size [2024-11-28 03:18:53,468 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 29 [2024-11-28 03:18:53,489 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 03:18:53,508 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:18:53,509 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 40 treesize of output 34 [2024-11-28 03:18:54,003 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 28 treesize of output 8 [2024-11-28 03:18:54,006 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-28 03:18:54,101 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 03:18:54,142 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:18:54,142 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:18:54,854 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:18:54,854 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 134 treesize of output 133 [2024-11-28 03:18:55,032 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 46 treesize of output 30 [2024-11-28 03:18:55,236 WARN L851 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1559 (Array Int Int)) (v_ArrVal_1560 (Array Int Int))) (<= (+ 8 (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_ArrVal_1560) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) 4)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_ArrVal_1559) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) 4)))) (forall ((v_ArrVal_1560 (Array Int Int))) (<= 0 (+ 4 (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_ArrVal_1560) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) 4))))) is different from false [2024-11-28 03:18:55,252 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (+ 8 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|))) (let ((.cse0 (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| (store (select |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) .cse1 0)))) (and (forall ((v_ArrVal_1559 (Array Int Int)) (v_ArrVal_1560 (Array Int Int)) (v_ArrVal_1558 Int)) (<= (+ 8 (select (select (store .cse0 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_ArrVal_1560) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) 4)) (select |c_#length| (select (select (store (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| (store (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) .cse1 v_ArrVal_1558)) |c_ULTIMATE.start_dll_create_~head~0#1.base| v_ArrVal_1559) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) 4)))) (forall ((v_ArrVal_1560 (Array Int Int))) (<= 0 (+ (select (select (store .cse0 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_ArrVal_1560) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) 4) 4)))))) is different from false [2024-11-28 03:18:55,267 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:18:55,267 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 27 treesize of output 33 [2024-11-28 03:18:55,285 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:18:55,285 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 46 treesize of output 48 [2024-11-28 03:18:55,321 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:18:55,321 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 51 treesize of output 57 [2024-11-28 03:18:55,335 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:18:55,335 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 42 [2024-11-28 03:18:55,338 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 03:18:55,347 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:18:55,347 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 27 [2024-11-28 03:18:55,352 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 03:18:55,367 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:18:55,367 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 34 [2024-11-28 03:18:55,833 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2024-11-28 03:18:55,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1291632125] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:18:55,833 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:18:55,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19, 19] total 54 [2024-11-28 03:18:55,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721266306] [2024-11-28 03:18:55,834 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:18:55,834 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2024-11-28 03:18:55,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:18:55,835 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2024-11-28 03:18:55,835 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=2596, Unknown=2, NotChecked=206, Total=2970 [2024-11-28 03:18:55,835 INFO L87 Difference]: Start difference. First operand 66 states and 70 transitions. Second operand has 55 states, 54 states have (on average 2.0555555555555554) internal successors, (111), 55 states have internal predecessors, (111), 0 states have call successors, (0), 0 states 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 03:18:57,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:18:57,957 INFO L93 Difference]: Finished difference Result 86 states and 90 transitions. [2024-11-28 03:18:57,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-28 03:18:57,957 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 54 states have (on average 2.0555555555555554) internal successors, (111), 55 states have internal predecessors, (111), 0 states have call successors, (0), 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 39 [2024-11-28 03:18:57,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:18:57,958 INFO L225 Difference]: With dead ends: 86 [2024-11-28 03:18:57,958 INFO L226 Difference]: Without dead ends: 86 [2024-11-28 03:18:57,959 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1023 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=408, Invalid=4428, Unknown=2, NotChecked=274, Total=5112 [2024-11-28 03:18:57,960 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 100 mSDsluCounter, 804 mSDsCounter, 0 mSdLazyCounter, 1317 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 835 SdHoareTripleChecker+Invalid, 1468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 132 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:18:57,960 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 835 Invalid, 1468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1317 Invalid, 0 Unknown, 132 Unchecked, 1.0s Time] [2024-11-28 03:18:57,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2024-11-28 03:18:57,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 66. [2024-11-28 03:18:57,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 58 states have (on average 1.1896551724137931) internal successors, (69), 65 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:18:57,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 69 transitions. [2024-11-28 03:18:57,962 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 69 transitions. Word has length 39 [2024-11-28 03:18:57,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:18:57,962 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 69 transitions. [2024-11-28 03:18:57,962 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 54 states have (on average 2.0555555555555554) internal successors, (111), 55 states have internal predecessors, (111), 0 states have call successors, (0), 0 states 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 03:18:57,963 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 69 transitions. [2024-11-28 03:18:57,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-28 03:18:57,963 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:18:57,963 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-28 03:18:57,974 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bf4311-a14d-471a-badd-f8f794bc6a09/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-28 03:18:58,163 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bf4311-a14d-471a-badd-f8f794bc6a09/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-28 03:18:58,164 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-11-28 03:18:58,164 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:18:58,164 INFO L85 PathProgramCache]: Analyzing trace with hash 977081945, now seen corresponding path program 1 times [2024-11-28 03:18:58,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:18:58,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340823381] [2024-11-28 03:18:58,164 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:18:58,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:18:58,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:18:58,283 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 03:18:58,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:18:58,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340823381] [2024-11-28 03:18:58,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340823381] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:18:58,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [754141435] [2024-11-28 03:18:58,284 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:18:58,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:18:58,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bf4311-a14d-471a-badd-f8f794bc6a09/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:18:58,286 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bf4311-a14d-471a-badd-f8f794bc6a09/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:18:58,288 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bf4311-a14d-471a-badd-f8f794bc6a09/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-28 03:18:58,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:18:58,505 INFO L256 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 03:18:58,506 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:18:58,557 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-28 03:18:58,557 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:18:58,619 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-28 03:18:58,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [754141435] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:18:58,619 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:18:58,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 6 [2024-11-28 03:18:58,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545453998] [2024-11-28 03:18:58,619 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:18:58,619 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:18:58,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:18:58,620 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:18:58,620 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:18:58,620 INFO L87 Difference]: Start difference. First operand 66 states and 69 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states 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 03:18:58,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:18:58,645 INFO L93 Difference]: Finished difference Result 66 states and 68 transitions. [2024-11-28 03:18:58,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:18:58,645 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 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 39 [2024-11-28 03:18:58,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:18:58,646 INFO L225 Difference]: With dead ends: 66 [2024-11-28 03:18:58,646 INFO L226 Difference]: Without dead ends: 66 [2024-11-28 03:18:58,646 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 76 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:18:58,647 INFO L435 NwaCegarLoop]: 38 mSDtfsCounter, 19 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:18:58,647 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 127 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:18:58,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2024-11-28 03:18:58,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2024-11-28 03:18:58,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 58 states have (on average 1.1724137931034482) internal successors, (68), 65 states have internal predecessors, (68), 0 states have call successors, (0), 0 states 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 03:18:58,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 68 transitions. [2024-11-28 03:18:58,651 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 68 transitions. Word has length 39 [2024-11-28 03:18:58,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:18:58,652 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 68 transitions. [2024-11-28 03:18:58,652 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states 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 03:18:58,652 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 68 transitions. [2024-11-28 03:18:58,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-28 03:18:58,653 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:18:58,653 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-28 03:18:58,662 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bf4311-a14d-471a-badd-f8f794bc6a09/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-28 03:18:58,853 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bf4311-a14d-471a-badd-f8f794bc6a09/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:18:58,853 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-11-28 03:18:58,853 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:18:58,854 INFO L85 PathProgramCache]: Analyzing trace with hash -1531904747, now seen corresponding path program 1 times [2024-11-28 03:18:58,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:18:58,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352103758] [2024-11-28 03:18:58,854 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:18:58,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:18:58,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:19:00,779 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:19:00,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:19:00,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352103758] [2024-11-28 03:19:00,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352103758] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:19:00,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1968769173] [2024-11-28 03:19:00,779 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:19:00,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:19:00,779 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bf4311-a14d-471a-badd-f8f794bc6a09/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:19:00,781 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bf4311-a14d-471a-badd-f8f794bc6a09/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:19:00,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bf4311-a14d-471a-badd-f8f794bc6a09/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-28 03:19:01,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:19:01,008 INFO L256 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 106 conjuncts are in the unsatisfiable core [2024-11-28 03:19:01,013 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:19:01,028 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 03:19:01,059 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 03:19:01,066 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 03:19:01,081 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 03:19:01,089 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 03:19:01,237 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-28 03:19:01,237 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 03:19:01,315 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 16 [2024-11-28 03:19:01,326 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 03:19:01,343 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 26 treesize of output 28 [2024-11-28 03:19:01,355 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 03:19:01,429 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2024-11-28 03:19:01,442 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 30 treesize of output 21 [2024-11-28 03:19:01,527 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-28 03:19:01,527 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 1 case distinctions, treesize of input 96 treesize of output 65 [2024-11-28 03:19:01,537 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 38 [2024-11-28 03:19:02,223 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 03:19:02,290 INFO L349 Elim1Store]: treesize reduction 134, result has 33.7 percent of original size [2024-11-28 03:19:02,291 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 77 treesize of output 101 [2024-11-28 03:19:02,319 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 03:19:02,433 INFO L349 Elim1Store]: treesize reduction 140, result has 44.7 percent of original size [2024-11-28 03:19:02,433 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 66 treesize of output 125 [2024-11-28 03:19:03,214 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 103 treesize of output 67 [2024-11-28 03:19:03,236 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-28 03:19:03,511 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 03:19:03,628 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:19:03,628 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:19:04,625 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:19:04,626 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 322 treesize of output 321 [2024-11-28 03:19:44,185 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 60 treesize of output 40 [2024-11-28 03:20:13,351 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse9 (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 4)) (.cse4 (+ 8 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|))) (let ((.cse5 (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| (store (store (select |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) .cse9 |c_ULTIMATE.start_dll_create_~head~0#1.offset|) .cse4 0)))) (let ((.cse3 (store (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) .cse9 |c_ULTIMATE.start_dll_create_~head~0#1.base|)) (.cse6 (select .cse5 |c_ULTIMATE.start_dll_create_~head~0#1.base|)) (.cse2 (+ |c_ULTIMATE.start_dll_create_~head~0#1.offset| 8))) (and (forall ((v_ArrVal_1826 Int) (v_ArrVal_1825 Int) (v_ArrVal_1828 Int)) (= (let ((.cse0 (store .cse5 |c_ULTIMATE.start_dll_create_~head~0#1.base| (store .cse6 .cse2 v_ArrVal_1828)))) (select (select .cse0 (select (select (let ((.cse1 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| (store .cse3 .cse4 v_ArrVal_1825)))) (store .cse1 |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select .cse1 |c_ULTIMATE.start_dll_create_~head~0#1.base|) .cse2 v_ArrVal_1826))) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) 4)) (+ (select (select .cse0 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) 4) 4))) 0)) (forall ((v_ArrVal_1826 Int) (v_ArrVal_1825 Int) (v_ArrVal_1828 Int)) (= (select (let ((.cse7 (let ((.cse8 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| (store .cse3 .cse4 v_ArrVal_1825)))) (store .cse8 |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select .cse8 |c_ULTIMATE.start_dll_create_~head~0#1.base|) .cse2 v_ArrVal_1826))))) (select .cse7 (select (select .cse7 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) 4))) (+ (select (select (store .cse5 |c_ULTIMATE.start_dll_create_~head~0#1.base| (store .cse6 .cse2 v_ArrVal_1828)) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) 4) 4)) 0)))))) is different from false [2024-11-28 03:20:13,383 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:20:13,383 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 125 treesize of output 102 [2024-11-28 03:20:13,404 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:20:13,405 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 85 treesize of output 82 [2024-11-28 03:20:13,450 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:20:13,451 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 125 treesize of output 122 [2024-11-28 03:20:13,467 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:20:13,467 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 105 treesize of output 82 [2024-11-28 03:20:13,499 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (+ |c_ULTIMATE.start_dll_create_~head~0#1.offset| 8)) (.cse5 (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 4)) (.cse4 (+ 8 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|))) (and (forall ((v_ArrVal_1826 Int) (v_ArrVal_1828 Int) (v_arrayElimArr_15 (Array Int Int)) (v_arrayElimArr_14 (Array Int Int))) (or (= (let ((.cse0 (let ((.cse3 (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| v_arrayElimArr_15))) (store .cse3 |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select .cse3 |c_ULTIMATE.start_dll_create_~head~0#1.base|) .cse2 v_ArrVal_1828))))) (select (select .cse0 (select (select (let ((.cse1 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| v_arrayElimArr_14))) (store .cse1 |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select .cse1 |c_ULTIMATE.start_dll_create_~head~0#1.base|) .cse2 v_ArrVal_1826))) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) 4)) (+ (select (select .cse0 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) 4) 4))) 0) (not (= (select v_arrayElimArr_15 .cse4) 0)) (not (= (select v_arrayElimArr_14 .cse5) |c_ULTIMATE.start_dll_create_~head~0#1.base|)) (not (= |c_ULTIMATE.start_dll_create_~head~0#1.offset| (select v_arrayElimArr_15 .cse5))))) (forall ((v_ArrVal_1826 Int) (v_arrayElimArr_13 (Array Int Int)) (v_ArrVal_1828 Int) (v_arrayElimArr_12 (Array Int Int))) (or (= (select (let ((.cse6 (let ((.cse7 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| v_arrayElimArr_12))) (store .cse7 |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select .cse7 |c_ULTIMATE.start_dll_create_~head~0#1.base|) .cse2 v_ArrVal_1826))))) (select .cse6 (select (select .cse6 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) 4))) (+ (select (select (let ((.cse8 (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| v_arrayElimArr_13))) (store .cse8 |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select .cse8 |c_ULTIMATE.start_dll_create_~head~0#1.base|) .cse2 v_ArrVal_1828))) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) 4) 4)) 0) (not (= |c_ULTIMATE.start_dll_create_~head~0#1.offset| (select v_arrayElimArr_13 .cse5))) (not (= (select v_arrayElimArr_12 .cse5) |c_ULTIMATE.start_dll_create_~head~0#1.base|)) (not (= (select v_arrayElimArr_13 .cse4) 0)))))) is different from false [2024-11-28 03:20:15,199 INFO L349 Elim1Store]: treesize reduction 523, result has 28.6 percent of original size [2024-11-28 03:20:15,199 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 4 new quantified variables, introduced 5 case distinctions, treesize of input 1264 treesize of output 996 [2024-11-28 03:20:15,234 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:20:15,234 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 730 treesize of output 630 [2024-11-28 03:20:15,293 INFO L349 Elim1Store]: treesize reduction 8, result has 79.5 percent of original size [2024-11-28 03:20:15,293 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 5 case distinctions, treesize of input 928 treesize of output 891 [2024-11-28 03:20:15,327 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 621 treesize of output 601 [2024-11-28 03:20:15,352 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 533 treesize of output 507 [2024-11-28 03:20:15,425 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:20:15,425 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 659 treesize of output 617 [2024-11-28 03:20:15,517 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 8 treesize of output 4 [2024-11-28 03:20:15,612 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 8 treesize of output 4 [2024-11-28 03:20:15,624 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 6 treesize of output 4 [2024-11-28 03:20:15,738 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 45 treesize of output 33 [2024-11-28 03:20:15,779 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-28 03:20:15,806 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:20:15,807 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 189 treesize of output 194 [2024-11-28 03:20:15,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:20:15,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:20:16,000 INFO L349 Elim1Store]: treesize reduction 162, result has 43.4 percent of original size [2024-11-28 03:20:16,000 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 4 new quantified variables, introduced 5 case distinctions, treesize of input 1199 treesize of output 955 [2024-11-28 03:20:16,025 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 521 treesize of output 499 [2024-11-28 03:20:16,117 INFO L349 Elim1Store]: treesize reduction 15, result has 71.7 percent of original size [2024-11-28 03:20:16,118 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 643 treesize of output 600 [2024-11-28 03:20:16,218 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:20:16,218 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 568 treesize of output 558 [2024-11-28 03:20:16,294 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 530 treesize of output 508 [2024-11-28 03:20:16,356 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:20:16,357 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 275 treesize of output 273 [2024-11-28 03:20:16,840 INFO L349 Elim1Store]: treesize reduction 14, result has 6.7 percent of original size [2024-11-28 03:20:16,840 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 19 treesize of output 4 [2024-11-28 03:20:16,875 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2024-11-28 03:20:17,195 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2024-11-28 03:20:17,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1968769173] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:20:17,195 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:20:17,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 26, 27] total 63 [2024-11-28 03:20:17,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047581389] [2024-11-28 03:20:17,196 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:20:17,196 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2024-11-28 03:20:17,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:20:17,197 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2024-11-28 03:20:17,197 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=3433, Unknown=18, NotChecked=238, Total=3906 [2024-11-28 03:20:17,198 INFO L87 Difference]: Start difference. First operand 66 states and 68 transitions. Second operand has 63 states, 63 states have (on average 1.7936507936507937) internal successors, (113), 63 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:20:21,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:20:21,955 INFO L93 Difference]: Finished difference Result 113 states and 116 transitions. [2024-11-28 03:20:21,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-28 03:20:21,956 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 1.7936507936507937) internal successors, (113), 63 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2024-11-28 03:20:21,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:20:21,957 INFO L225 Difference]: With dead ends: 113 [2024-11-28 03:20:21,957 INFO L226 Difference]: Without dead ends: 113 [2024-11-28 03:20:21,958 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 79 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1218 ImplicationChecksByTransitivity, 74.9s TimeCoverageRelationStatistics Valid=410, Invalid=5742, Unknown=18, NotChecked=310, Total=6480 [2024-11-28 03:20:21,959 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 104 mSDsluCounter, 979 mSDsCounter, 0 mSdLazyCounter, 1292 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 1010 SdHoareTripleChecker+Invalid, 1444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 137 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-28 03:20:21,959 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 1010 Invalid, 1444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1292 Invalid, 0 Unknown, 137 Unchecked, 2.4s Time] [2024-11-28 03:20:21,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2024-11-28 03:20:21,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 96. [2024-11-28 03:20:21,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 88 states have (on average 1.125) internal successors, (99), 95 states have internal predecessors, (99), 0 states have call successors, (0), 0 states 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 03:20:21,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 99 transitions. [2024-11-28 03:20:21,962 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 99 transitions. Word has length 42 [2024-11-28 03:20:21,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:20:21,962 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 99 transitions. [2024-11-28 03:20:21,963 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 1.7936507936507937) internal successors, (113), 63 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:20:21,963 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 99 transitions. [2024-11-28 03:20:21,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-28 03:20:21,963 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:20:21,963 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-28 03:20:21,976 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bf4311-a14d-471a-badd-f8f794bc6a09/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-28 03:20:22,164 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bf4311-a14d-471a-badd-f8f794bc6a09/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:20:22,164 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-11-28 03:20:22,164 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:20:22,164 INFO L85 PathProgramCache]: Analyzing trace with hash -244401862, now seen corresponding path program 1 times [2024-11-28 03:20:22,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:20:22,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735451462] [2024-11-28 03:20:22,164 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:20:22,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:20:22,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:20:23,225 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:20:23,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:20:23,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735451462] [2024-11-28 03:20:23,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735451462] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:20:23,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1756422089] [2024-11-28 03:20:23,226 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:20:23,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:20:23,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bf4311-a14d-471a-badd-f8f794bc6a09/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:20:23,229 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bf4311-a14d-471a-badd-f8f794bc6a09/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:20:23,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bf4311-a14d-471a-badd-f8f794bc6a09/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-28 03:20:23,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:20:23,450 INFO L256 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 65 conjuncts are in the unsatisfiable core [2024-11-28 03:20:23,454 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:20:23,494 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 03:20:23,631 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-28 03:20:23,632 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 03:20:23,710 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 03:20:23,761 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 19 treesize of output 18 [2024-11-28 03:20:23,824 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 16 [2024-11-28 03:20:24,124 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 30 treesize of output 18 [2024-11-28 03:20:24,239 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:20:24,239 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 34 [2024-11-28 03:20:24,682 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-28 03:20:24,825 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:20:24,826 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:20:25,225 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:20:25,225 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 47 [2024-11-28 03:20:25,359 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 20 treesize of output 12 [2024-11-28 03:20:25,536 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1963 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_ArrVal_1963) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) 4) 0)) is different from false [2024-11-28 03:20:25,652 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:20:25,652 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 25 treesize of output 31 [2024-11-28 03:20:25,675 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:20:25,675 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 42 treesize of output 44 [2024-11-28 03:20:26,030 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2024-11-28 03:20:26,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1756422089] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:20:26,030 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:20:26,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 20, 19] total 50 [2024-11-28 03:20:26,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854632781] [2024-11-28 03:20:26,031 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:20:26,031 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-11-28 03:20:26,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:20:26,032 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-11-28 03:20:26,033 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=2267, Unknown=4, NotChecked=96, Total=2550 [2024-11-28 03:20:26,033 INFO L87 Difference]: Start difference. First operand 96 states and 99 transitions. Second operand has 51 states, 50 states have (on average 2.3) internal successors, (115), 51 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:20:27,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:20:27,929 INFO L93 Difference]: Finished difference Result 121 states and 126 transitions. [2024-11-28 03:20:27,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-28 03:20:27,929 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 50 states have (on average 2.3) internal successors, (115), 51 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2024-11-28 03:20:27,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:20:27,930 INFO L225 Difference]: With dead ends: 121 [2024-11-28 03:20:27,930 INFO L226 Difference]: Without dead ends: 121 [2024-11-28 03:20:27,931 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1091 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=491, Invalid=4201, Unknown=4, NotChecked=134, Total=4830 [2024-11-28 03:20:27,932 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 186 mSDsluCounter, 596 mSDsCounter, 0 mSdLazyCounter, 827 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 622 SdHoareTripleChecker+Invalid, 934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 827 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 86 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-28 03:20:27,932 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 622 Invalid, 934 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 827 Invalid, 0 Unknown, 86 Unchecked, 0.9s Time] [2024-11-28 03:20:27,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2024-11-28 03:20:27,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 111. [2024-11-28 03:20:27,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 103 states have (on average 1.174757281553398) internal successors, (121), 110 states have internal predecessors, (121), 0 states have call successors, (0), 0 states 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 03:20:27,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 121 transitions. [2024-11-28 03:20:27,940 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 121 transitions. Word has length 43 [2024-11-28 03:20:27,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:20:27,940 INFO L471 AbstractCegarLoop]: Abstraction has 111 states and 121 transitions. [2024-11-28 03:20:27,940 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 50 states have (on average 2.3) internal successors, (115), 51 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:20:27,940 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 121 transitions. [2024-11-28 03:20:27,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-28 03:20:27,940 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:20:27,940 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] [2024-11-28 03:20:27,954 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bf4311-a14d-471a-badd-f8f794bc6a09/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-28 03:20:28,141 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bf4311-a14d-471a-badd-f8f794bc6a09/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-28 03:20:28,141 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-11-28 03:20:28,141 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:20:28,141 INFO L85 PathProgramCache]: Analyzing trace with hash 1013476982, now seen corresponding path program 1 times [2024-11-28 03:20:28,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:20:28,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535998634] [2024-11-28 03:20:28,141 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:20:28,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:20:28,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:20:29,152 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 3 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:20:29,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:20:29,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535998634] [2024-11-28 03:20:29,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535998634] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:20:29,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [149412922] [2024-11-28 03:20:29,153 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:20:29,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:20:29,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bf4311-a14d-471a-badd-f8f794bc6a09/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:20:29,155 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bf4311-a14d-471a-badd-f8f794bc6a09/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:20:29,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bf4311-a14d-471a-badd-f8f794bc6a09/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-28 03:20:29,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:20:29,400 INFO L256 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-11-28 03:20:29,403 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:20:29,409 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 03:20:29,463 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-28 03:20:29,463 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 03:20:29,494 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 03:20:29,549 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 03:20:29,617 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-28 03:20:29,618 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 33 [2024-11-28 03:20:30,010 INFO L349 Elim1Store]: treesize reduction 12, result has 50.0 percent of original size [2024-11-28 03:20:30,010 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 29 [2024-11-28 03:20:30,292 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 47 treesize of output 39 [2024-11-28 03:20:30,534 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 47 treesize of output 23 [2024-11-28 03:20:30,570 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 03:20:30,576 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 3 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:20:30,576 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:20:31,216 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 8 treesize of output 4 [2024-11-28 03:20:31,424 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 20 treesize of output 12 [2024-11-28 03:20:31,771 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2093 (Array Int Int)) (v_ArrVal_2091 Int)) (< (select (select (store (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| (store (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ 8 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|) v_ArrVal_2091)) |c_ULTIMATE.start_dll_create_~head~0#1.base| v_ArrVal_2093) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) 4) |c_#StackHeapBarrier|)) is different from false [2024-11-28 03:20:31,783 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:20:31,784 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 25 treesize of output 31 [2024-11-28 03:20:31,793 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:20:31,793 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 30 [2024-11-28 03:20:31,809 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 5 [2024-11-28 03:20:32,056 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2024-11-28 03:20:32,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [149412922] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:20:32,056 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:20:32,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 19, 19] total 43 [2024-11-28 03:20:32,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498096290] [2024-11-28 03:20:32,057 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:20:32,057 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-28 03:20:32,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:20:32,057 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-28 03:20:32,058 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=1659, Unknown=15, NotChecked=82, Total=1892 [2024-11-28 03:20:32,058 INFO L87 Difference]: Start difference. First operand 111 states and 121 transitions. Second operand has 44 states, 43 states have (on average 2.2325581395348837) internal successors, (96), 44 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:20:34,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:20:34,570 INFO L93 Difference]: Finished difference Result 126 states and 137 transitions. [2024-11-28 03:20:34,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-28 03:20:34,571 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 43 states have (on average 2.2325581395348837) internal successors, (96), 44 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2024-11-28 03:20:34,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:20:34,571 INFO L225 Difference]: With dead ends: 126 [2024-11-28 03:20:34,572 INFO L226 Difference]: Without dead ends: 126 [2024-11-28 03:20:34,572 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 61 SyntacticMatches, 4 SemanticMatches, 57 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 481 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=294, Invalid=3001, Unknown=15, NotChecked=112, Total=3422 [2024-11-28 03:20:34,573 INFO L435 NwaCegarLoop]: 32 mSDtfsCounter, 65 mSDsluCounter, 722 mSDsCounter, 0 mSdLazyCounter, 1287 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 754 SdHoareTripleChecker+Invalid, 1358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 60 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-28 03:20:34,573 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 754 Invalid, 1358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1287 Invalid, 0 Unknown, 60 Unchecked, 1.5s Time] [2024-11-28 03:20:34,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2024-11-28 03:20:34,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 120. [2024-11-28 03:20:34,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 112 states have (on average 1.1875) internal successors, (133), 119 states have internal predecessors, (133), 0 states have call successors, (0), 0 states 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 03:20:34,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 133 transitions. [2024-11-28 03:20:34,581 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 133 transitions. Word has length 44 [2024-11-28 03:20:34,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:20:34,581 INFO L471 AbstractCegarLoop]: Abstraction has 120 states and 133 transitions. [2024-11-28 03:20:34,581 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 43 states have (on average 2.2325581395348837) internal successors, (96), 44 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:20:34,582 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 133 transitions. [2024-11-28 03:20:34,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-28 03:20:34,582 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:20:34,582 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:20:34,591 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bf4311-a14d-471a-badd-f8f794bc6a09/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-28 03:20:34,782 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bf4311-a14d-471a-badd-f8f794bc6a09/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-28 03:20:34,783 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-11-28 03:20:34,783 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:20:34,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1892115162, now seen corresponding path program 2 times [2024-11-28 03:20:34,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:20:34,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405621337] [2024-11-28 03:20:34,784 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:20:34,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:20:34,808 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:20:34,808 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:20:34,918 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 19 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-28 03:20:34,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:20:34,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405621337] [2024-11-28 03:20:34,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405621337] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:20:34,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [408669656] [2024-11-28 03:20:34,919 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:20:34,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:20:34,919 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bf4311-a14d-471a-badd-f8f794bc6a09/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:20:34,921 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bf4311-a14d-471a-badd-f8f794bc6a09/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:20:34,925 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bf4311-a14d-471a-badd-f8f794bc6a09/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-28 03:20:35,166 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:20:35,166 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:20:35,168 INFO L256 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 03:20:35,169 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:20:35,212 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-28 03:20:35,212 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:20:35,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [408669656] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:20:35,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:20:35,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2024-11-28 03:20:35,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449045897] [2024-11-28 03:20:35,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:20:35,212 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:20:35,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:20:35,213 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:20:35,213 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:20:35,213 INFO L87 Difference]: Start difference. First operand 120 states and 133 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states 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 03:20:35,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:20:35,236 INFO L93 Difference]: Finished difference Result 86 states and 94 transitions. [2024-11-28 03:20:35,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:20:35,237 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 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 51 [2024-11-28 03:20:35,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:20:35,238 INFO L225 Difference]: With dead ends: 86 [2024-11-28 03:20:35,238 INFO L226 Difference]: Without dead ends: 86 [2024-11-28 03:20:35,238 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:20:35,238 INFO L435 NwaCegarLoop]: 45 mSDtfsCounter, 0 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:20:35,238 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 94 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:20:35,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2024-11-28 03:20:35,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2024-11-28 03:20:35,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 78 states have (on average 1.205128205128205) internal successors, (94), 85 states have internal predecessors, (94), 0 states have call successors, (0), 0 states 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 03:20:35,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 94 transitions. [2024-11-28 03:20:35,241 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 94 transitions. Word has length 51 [2024-11-28 03:20:35,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:20:35,242 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 94 transitions. [2024-11-28 03:20:35,242 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states 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 03:20:35,242 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 94 transitions. [2024-11-28 03:20:35,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-28 03:20:35,242 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:20:35,242 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2024-11-28 03:20:35,252 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bf4311-a14d-471a-badd-f8f794bc6a09/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-28 03:20:35,443 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bf4311-a14d-471a-badd-f8f794bc6a09/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-28 03:20:35,443 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-11-28 03:20:35,443 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:20:35,444 INFO L85 PathProgramCache]: Analyzing trace with hash 2065898761, now seen corresponding path program 1 times [2024-11-28 03:20:35,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:20:35,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527826638] [2024-11-28 03:20:35,444 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:20:35,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:20:35,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:20:35,618 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 20 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 03:20:35,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:20:35,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527826638] [2024-11-28 03:20:35,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527826638] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:20:35,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1586340385] [2024-11-28 03:20:35,618 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:20:35,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:20:35,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bf4311-a14d-471a-badd-f8f794bc6a09/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:20:35,621 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bf4311-a14d-471a-badd-f8f794bc6a09/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:20:35,624 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bf4311-a14d-471a-badd-f8f794bc6a09/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-28 03:20:35,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:20:35,860 INFO L256 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 03:20:35,861 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:20:35,948 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-28 03:20:35,948 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:20:35,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1586340385] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:20:35,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:20:35,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 7 [2024-11-28 03:20:35,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523498100] [2024-11-28 03:20:35,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:20:35,948 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:20:35,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:20:35,949 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:20:35,949 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:20:35,949 INFO L87 Difference]: Start difference. First operand 86 states and 94 transitions. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states 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 03:20:35,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:20:35,973 INFO L93 Difference]: Finished difference Result 56 states and 55 transitions. [2024-11-28 03:20:35,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:20:35,976 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 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 51 [2024-11-28 03:20:35,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:20:35,977 INFO L225 Difference]: With dead ends: 56 [2024-11-28 03:20:35,977 INFO L226 Difference]: Without dead ends: 56 [2024-11-28 03:20:35,977 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:20:35,977 INFO L435 NwaCegarLoop]: 42 mSDtfsCounter, 0 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:20:35,978 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 132 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:20:35,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-11-28 03:20:35,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2024-11-28 03:20:35,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 54 states have (on average 1.0185185185185186) internal successors, (55), 55 states have internal predecessors, (55), 0 states have call successors, (0), 0 states 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 03:20:35,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 55 transitions. [2024-11-28 03:20:35,979 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 55 transitions. Word has length 51 [2024-11-28 03:20:35,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:20:35,979 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 55 transitions. [2024-11-28 03:20:35,979 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states 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 03:20:35,980 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 55 transitions. [2024-11-28 03:20:35,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-28 03:20:35,985 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:20:35,985 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] [2024-11-28 03:20:35,996 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bf4311-a14d-471a-badd-f8f794bc6a09/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-28 03:20:36,185 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bf4311-a14d-471a-badd-f8f794bc6a09/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-28 03:20:36,186 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-11-28 03:20:36,186 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:20:36,186 INFO L85 PathProgramCache]: Analyzing trace with hash 2065992306, now seen corresponding path program 1 times [2024-11-28 03:20:36,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:20:36,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62768611] [2024-11-28 03:20:36,186 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:20:36,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:20:36,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:20:37,966 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:20:37,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:20:37,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62768611] [2024-11-28 03:20:37,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62768611] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:20:37,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1238261456] [2024-11-28 03:20:37,967 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:20:37,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:20:37,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bf4311-a14d-471a-badd-f8f794bc6a09/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:20:37,968 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bf4311-a14d-471a-badd-f8f794bc6a09/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:20:37,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bf4311-a14d-471a-badd-f8f794bc6a09/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-28 03:20:38,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:20:38,234 INFO L256 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 77 conjuncts are in the unsatisfiable core [2024-11-28 03:20:38,238 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:20:39,119 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 03:20:39,344 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 03:20:39,613 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-28 03:20:39,613 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 164 treesize of output 147 [2024-11-28 03:20:41,363 INFO L349 Elim1Store]: treesize reduction 12, result has 50.0 percent of original size [2024-11-28 03:20:41,364 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 249 treesize of output 167 [2024-11-28 03:20:42,918 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 305 treesize of output 297 [2024-11-28 03:20:44,383 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 199 treesize of output 147 [2024-11-28 03:20:45,725 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 161 treesize of output 113 [2024-11-28 03:20:50,024 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:20:50,025 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:20:52,319 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 8 treesize of output 4 [2024-11-28 03:20:52,730 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 37 treesize of output 25 [2024-11-28 03:21:02,162 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:21:02,163 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 44 [2024-11-28 03:21:02,176 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:21:02,176 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 56 [2024-11-28 03:21:02,182 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2024-11-28 03:21:06,765 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:21:06,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1238261456] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:21:06,766 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:21:06,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 25, 24] total 67 [2024-11-28 03:21:06,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311283879] [2024-11-28 03:21:06,766 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:21:06,767 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2024-11-28 03:21:06,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:21:06,768 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2024-11-28 03:21:06,770 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=4307, Unknown=35, NotChecked=0, Total=4556 [2024-11-28 03:21:06,771 INFO L87 Difference]: Start difference. First operand 56 states and 55 transitions. Second operand has 68 states, 67 states have (on average 2.1641791044776117) internal successors, (145), 68 states have internal predecessors, (145), 0 states have call successors, (0), 0 states 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 03:21:16,779 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 03:21:21,521 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 03:21:26,533 WARN L539 Checker$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 03:21:31,412 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 03:21:32,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:21:32,551 INFO L93 Difference]: Finished difference Result 55 states and 54 transitions. [2024-11-28 03:21:32,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-28 03:21:32,551 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 67 states have (on average 2.1641791044776117) internal successors, (145), 68 states have internal predecessors, (145), 0 states have call successors, (0), 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 51 [2024-11-28 03:21:32,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:21:32,552 INFO L225 Difference]: With dead ends: 55 [2024-11-28 03:21:32,552 INFO L226 Difference]: Without dead ends: 54 [2024-11-28 03:21:32,553 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 1295 ImplicationChecksByTransitivity, 31.7s TimeCoverageRelationStatistics Valid=423, Invalid=7552, Unknown=35, NotChecked=0, Total=8010 [2024-11-28 03:21:32,553 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 70 mSDsluCounter, 633 mSDsCounter, 0 mSdLazyCounter, 1523 mSolverCounterSat, 15 mSolverCounterUnsat, 15 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 652 SdHoareTripleChecker+Invalid, 1553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1523 IncrementalHoareTripleChecker+Invalid, 15 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:21:32,554 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 652 Invalid, 1553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1523 Invalid, 15 Unknown, 0 Unchecked, 19.0s Time] [2024-11-28 03:21:32,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-11-28 03:21:32,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2024-11-28 03:21:32,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.0) internal successors, (53), 53 states have internal predecessors, (53), 0 states have call successors, (0), 0 states 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 03:21:32,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 53 transitions. [2024-11-28 03:21:32,556 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 53 transitions. Word has length 51 [2024-11-28 03:21:32,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:21:32,557 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 53 transitions. [2024-11-28 03:21:32,557 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 67 states have (on average 2.1641791044776117) internal successors, (145), 68 states have internal predecessors, (145), 0 states have call successors, (0), 0 states 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 03:21:32,558 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 53 transitions. [2024-11-28 03:21:32,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-28 03:21:32,558 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:21:32,558 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] [2024-11-28 03:21:32,572 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bf4311-a14d-471a-badd-f8f794bc6a09/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-28 03:21:32,760 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bf4311-a14d-471a-badd-f8f794bc6a09/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:21:32,761 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-11-28 03:21:32,761 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:21:32,761 INFO L85 PathProgramCache]: Analyzing trace with hash 1143648586, now seen corresponding path program 1 times [2024-11-28 03:21:32,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:21:32,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659720089] [2024-11-28 03:21:32,761 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:21:32,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:21:32,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:21:33,035 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-28 03:21:33,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:21:33,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659720089] [2024-11-28 03:21:33,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659720089] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:21:33,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:21:33,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 03:21:33,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917215705] [2024-11-28 03:21:33,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:21:33,036 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:21:33,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:21:33,037 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:21:33,037 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:21:33,037 INFO L87 Difference]: Start difference. First operand 54 states and 53 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states 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 03:21:33,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:21:33,109 INFO L93 Difference]: Finished difference Result 50 states and 49 transitions. [2024-11-28 03:21:33,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:21:33,109 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 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 53 [2024-11-28 03:21:33,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:21:33,110 INFO L225 Difference]: With dead ends: 50 [2024-11-28 03:21:33,110 INFO L226 Difference]: Without dead ends: 0 [2024-11-28 03:21:33,110 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:21:33,111 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 6 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:21:33,111 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 106 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:21:33,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-28 03:21:33,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-28 03:21:33,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:21:33,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-28 03:21:33,112 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 53 [2024-11-28 03:21:33,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:21:33,112 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-28 03:21:33,112 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states 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 03:21:33,112 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-28 03:21:33,112 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-28 03:21:33,116 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 25 remaining) [2024-11-28 03:21:33,116 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 25 remaining) [2024-11-28 03:21:33,116 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 25 remaining) [2024-11-28 03:21:33,116 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 25 remaining) [2024-11-28 03:21:33,116 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 25 remaining) [2024-11-28 03:21:33,117 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 25 remaining) [2024-11-28 03:21:33,117 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 25 remaining) [2024-11-28 03:21:33,117 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 25 remaining) [2024-11-28 03:21:33,117 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 25 remaining) [2024-11-28 03:21:33,117 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 25 remaining) [2024-11-28 03:21:33,117 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 25 remaining) [2024-11-28 03:21:33,117 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 25 remaining) [2024-11-28 03:21:33,117 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 25 remaining) [2024-11-28 03:21:33,117 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 25 remaining) [2024-11-28 03:21:33,118 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 25 remaining) [2024-11-28 03:21:33,118 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 25 remaining) [2024-11-28 03:21:33,118 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE (8 of 25 remaining) [2024-11-28 03:21:33,118 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE (7 of 25 remaining) [2024-11-28 03:21:33,118 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE (6 of 25 remaining) [2024-11-28 03:21:33,118 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 25 remaining) [2024-11-28 03:21:33,118 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 25 remaining) [2024-11-28 03:21:33,118 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 25 remaining) [2024-11-28 03:21:33,118 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 25 remaining) [2024-11-28 03:21:33,119 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK (1 of 25 remaining) [2024-11-28 03:21:33,119 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK (0 of 25 remaining) [2024-11-28 03:21:33,119 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-11-28 03:21:33,122 INFO L422 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:21:33,124 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-28 03:21:33,127 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:21:33 BoogieIcfgContainer [2024-11-28 03:21:33,128 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-28 03:21:33,128 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-28 03:21:33,128 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-28 03:21:33,129 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-28 03:21:33,130 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:18:13" (3/4) ... [2024-11-28 03:21:33,132 INFO L146 WitnessPrinter]: Generating witness for correct program [2024-11-28 03:21:33,137 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure myexit [2024-11-28 03:21:33,140 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2024-11-28 03:21:33,141 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2024-11-28 03:21:33,141 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-28 03:21:33,141 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-28 03:21:33,224 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bf4311-a14d-471a-badd-f8f794bc6a09/bin/uautomizer-verify-aQ6SnzHsRB/witness.graphml [2024-11-28 03:21:33,225 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bf4311-a14d-471a-badd-f8f794bc6a09/bin/uautomizer-verify-aQ6SnzHsRB/witness.yml [2024-11-28 03:21:33,225 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-28 03:21:33,226 INFO L158 Benchmark]: Toolchain (without parser) took 201140.46ms. Allocated memory was 117.4MB in the beginning and 167.8MB in the end (delta: 50.3MB). Free memory was 92.4MB in the beginning and 54.3MB in the end (delta: 38.1MB). Peak memory consumption was 90.3MB. Max. memory is 16.1GB. [2024-11-28 03:21:33,227 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 167.8MB. Free memory is still 105.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 03:21:33,228 INFO L158 Benchmark]: CACSL2BoogieTranslator took 498.30ms. Allocated memory is still 117.4MB. Free memory was 92.1MB in the beginning and 74.6MB in the end (delta: 17.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-28 03:21:33,229 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.76ms. Allocated memory is still 117.4MB. Free memory was 74.6MB in the beginning and 73.0MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 03:21:33,229 INFO L158 Benchmark]: Boogie Preprocessor took 65.84ms. Allocated memory is still 117.4MB. Free memory was 73.0MB in the beginning and 71.0MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 03:21:33,229 INFO L158 Benchmark]: RCFGBuilder took 564.20ms. Allocated memory is still 117.4MB. Free memory was 70.7MB in the beginning and 53.3MB in the end (delta: 17.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-28 03:21:33,229 INFO L158 Benchmark]: TraceAbstraction took 199854.45ms. Allocated memory was 117.4MB in the beginning and 167.8MB in the end (delta: 50.3MB). Free memory was 52.6MB in the beginning and 60.8MB in the end (delta: -8.2MB). Peak memory consumption was 39.9MB. Max. memory is 16.1GB. [2024-11-28 03:21:33,230 INFO L158 Benchmark]: Witness Printer took 97.27ms. Allocated memory is still 167.8MB. Free memory was 60.8MB in the beginning and 54.3MB in the end (delta: 6.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 03:21:33,230 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 167.8MB. Free memory is still 105.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 498.30ms. Allocated memory is still 117.4MB. Free memory was 92.1MB in the beginning and 74.6MB in the end (delta: 17.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 53.76ms. Allocated memory is still 117.4MB. Free memory was 74.6MB in the beginning and 73.0MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 65.84ms. Allocated memory is still 117.4MB. Free memory was 73.0MB in the beginning and 71.0MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 564.20ms. Allocated memory is still 117.4MB. Free memory was 70.7MB in the beginning and 53.3MB in the end (delta: 17.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 199854.45ms. Allocated memory was 117.4MB in the beginning and 167.8MB in the end (delta: 50.3MB). Free memory was 52.6MB in the beginning and 60.8MB in the end (delta: -8.2MB). Peak memory consumption was 39.9MB. Max. memory is 16.1GB. * Witness Printer took 97.27ms. Allocated memory is still 167.8MB. Free memory was 60.8MB in the beginning and 54.3MB in the end (delta: 6.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 608]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 608]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 608]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 12]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 611]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 64 locations, 25 error locations. Started 1 CEGAR loops. OverallTime: 199.8s, OverallIterations: 31, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 47.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 17 mSolverCounterUnknown, 1819 SdHoareTripleChecker+Valid, 30.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1819 mSDsluCounter, 8899 SdHoareTripleChecker+Invalid, 28.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 725 IncrementalHoareTripleChecker+Unchecked, 7788 mSDsCounter, 227 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 12144 IncrementalHoareTripleChecker+Invalid, 13113 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 227 mSolverCounterUnsat, 1111 mSDtfsCounter, 12144 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1652 GetRequests, 887 SyntacticMatches, 20 SemanticMatches, 745 ConstructedPredicates, 10 IntricatePredicates, 2 DeprecatedPredicates, 9298 ImplicationChecksByTransitivity, 133.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=120occurred in iteration=27, InterpolantAutomatonStates: 344, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 31 MinimizatonAttempts, 290 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.6s SatisfiabilityAnalysisTime, 143.1s InterpolantComputationTime, 1592 NumberOfCodeBlocks, 1576 NumberOfCodeBlocksAsserted, 52 NumberOfCheckSat, 2044 ConstructedInterpolants, 217 QuantifiedInterpolants, 37023 SizeOfPredicates, 142 NumberOfNonLiveVariables, 5299 ConjunctsInSsa, 712 ConjunctsInUnsatCore, 66 InterpolantComputations, 15 PerfectInterpolantSequences, 358/833 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 25 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-28 03:21:33,322 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93bf4311-a14d-471a-badd-f8f794bc6a09/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE