./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/openbsd_cstrcspn-alloca-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/openbsd_cstrcspn-alloca-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC --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 86c4ccee9690ccdd33683565314ba095e56520aa142914bd8063fc7c4c92940d --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 01:32:32,372 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 01:32:32,451 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-24 01:32:32,459 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 01:32:32,459 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 01:32:32,500 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 01:32:32,500 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 01:32:32,501 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 01:32:32,501 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 01:32:32,502 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 01:32:32,503 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 01:32:32,504 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 01:32:32,504 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 01:32:32,504 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 01:32:32,505 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 01:32:32,505 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 01:32:32,505 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-24 01:32:32,505 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 01:32:32,505 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-24 01:32:32,505 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 01:32:32,506 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-24 01:32:32,506 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-24 01:32:32,506 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-24 01:32:32,506 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 01:32:32,506 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-24 01:32:32,506 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-24 01:32:32,506 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-24 01:32:32,506 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 01:32:32,506 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 01:32:32,506 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 01:32:32,506 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:32:32,507 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:32:32,507 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:32:32,507 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:32:32,507 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 01:32:32,507 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:32:32,507 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:32:32,507 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:32:32,507 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:32:32,507 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 01:32:32,507 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 01:32:32,507 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-24 01:32:32,508 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-24 01:32:32,508 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 01:32:32,508 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 01:32:32,508 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 01:32:32,508 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 01:32:32,508 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_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC 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 -> 86c4ccee9690ccdd33683565314ba095e56520aa142914bd8063fc7c4c92940d [2024-11-24 01:32:32,820 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 01:32:32,832 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 01:32:32,835 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 01:32:32,837 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 01:32:32,838 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 01:32:32,840 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/array-memsafety/openbsd_cstrcspn-alloca-2.i [2024-11-24 01:32:35,787 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/data/050fe05a0/31033ff1e33b404bad294dd1af121570/FLAG4660970fa [2024-11-24 01:32:36,095 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 01:32:36,099 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/sv-benchmarks/c/array-memsafety/openbsd_cstrcspn-alloca-2.i [2024-11-24 01:32:36,118 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/data/050fe05a0/31033ff1e33b404bad294dd1af121570/FLAG4660970fa [2024-11-24 01:32:36,138 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/data/050fe05a0/31033ff1e33b404bad294dd1af121570 [2024-11-24 01:32:36,140 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 01:32:36,143 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 01:32:36,145 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 01:32:36,145 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 01:32:36,149 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 01:32:36,151 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:32:36" (1/1) ... [2024-11-24 01:32:36,152 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bb397fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:32:36, skipping insertion in model container [2024-11-24 01:32:36,152 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:32:36" (1/1) ... [2024-11-24 01:32:36,194 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 01:32:36,505 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:32:36,506 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:32:36,511 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:32:36,522 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 01:32:36,575 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:32:36,606 INFO L204 MainTranslator]: Completed translation [2024-11-24 01:32:36,607 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:32:36 WrapperNode [2024-11-24 01:32:36,607 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 01:32:36,608 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 01:32:36,608 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 01:32:36,608 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 01:32:36,615 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:32:36" (1/1) ... [2024-11-24 01:32:36,633 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:32:36" (1/1) ... [2024-11-24 01:32:36,657 INFO L138 Inliner]: procedures = 117, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 88 [2024-11-24 01:32:36,660 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 01:32:36,661 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 01:32:36,661 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 01:32:36,661 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 01:32:36,670 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:32:36" (1/1) ... [2024-11-24 01:32:36,670 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:32:36" (1/1) ... [2024-11-24 01:32:36,678 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:32:36" (1/1) ... [2024-11-24 01:32:36,701 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [3, 3]. 50 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0, 0]. The 4 writes are split as follows [2, 2]. [2024-11-24 01:32:36,701 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:32:36" (1/1) ... [2024-11-24 01:32:36,702 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:32:36" (1/1) ... [2024-11-24 01:32:36,708 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:32:36" (1/1) ... [2024-11-24 01:32:36,713 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:32:36" (1/1) ... [2024-11-24 01:32:36,720 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:32:36" (1/1) ... [2024-11-24 01:32:36,721 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:32:36" (1/1) ... [2024-11-24 01:32:36,722 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:32:36" (1/1) ... [2024-11-24 01:32:36,725 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 01:32:36,729 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 01:32:36,729 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 01:32:36,729 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 01:32:36,730 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:32:36" (1/1) ... [2024-11-24 01:32:36,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:32:36,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:32:36,770 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 01:32:36,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 01:32:36,800 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-24 01:32:36,800 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-24 01:32:36,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-24 01:32:36,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-24 01:32:36,800 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-24 01:32:36,800 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-24 01:32:36,800 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 01:32:36,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 01:32:36,921 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 01:32:36,923 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 01:32:37,223 INFO L? ?]: Removed 55 outVars from TransFormulas that were not future-live. [2024-11-24 01:32:37,223 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 01:32:37,233 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 01:32:37,233 INFO L312 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-24 01:32:37,234 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:32:37 BoogieIcfgContainer [2024-11-24 01:32:37,234 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 01:32:37,237 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 01:32:37,237 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 01:32:37,243 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 01:32:37,244 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 01:32:36" (1/3) ... [2024-11-24 01:32:37,244 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@345ae310 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:32:37, skipping insertion in model container [2024-11-24 01:32:37,244 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:32:36" (2/3) ... [2024-11-24 01:32:37,245 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@345ae310 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:32:37, skipping insertion in model container [2024-11-24 01:32:37,245 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:32:37" (3/3) ... [2024-11-24 01:32:37,246 INFO L128 eAbstractionObserver]: Analyzing ICFG openbsd_cstrcspn-alloca-2.i [2024-11-24 01:32:37,264 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 01:32:37,267 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG openbsd_cstrcspn-alloca-2.i that has 1 procedures, 43 locations, 1 initial locations, 4 loop locations, and 13 error locations. [2024-11-24 01:32:37,317 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 01:32:37,334 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;@1b92ccaa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 01:32:37,334 INFO L334 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2024-11-24 01:32:37,339 INFO L276 IsEmpty]: Start isEmpty. Operand has 43 states, 29 states have (on average 1.793103448275862) internal successors, (52), 42 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:32:37,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-24 01:32:37,346 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:32:37,346 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:32:37,347 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-24 01:32:37,353 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:32:37,353 INFO L85 PathProgramCache]: Analyzing trace with hash 121325233, now seen corresponding path program 1 times [2024-11-24 01:32:37,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:32:37,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462218695] [2024-11-24 01:32:37,360 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:32:37,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:32:37,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:32:37,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:32:37,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:32:37,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462218695] [2024-11-24 01:32:37,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462218695] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:32:37,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:32:37,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 01:32:37,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670734239] [2024-11-24 01:32:37,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:32:37,677 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:32:37,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:32:37,703 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:32:37,703 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:32:37,706 INFO L87 Difference]: Start difference. First operand has 43 states, 29 states have (on average 1.793103448275862) internal successors, (52), 42 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:32:37,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:32:37,796 INFO L93 Difference]: Finished difference Result 56 states and 64 transitions. [2024-11-24 01:32:37,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 01:32:37,798 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-24 01:32:37,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:32:37,805 INFO L225 Difference]: With dead ends: 56 [2024-11-24 01:32:37,805 INFO L226 Difference]: Without dead ends: 54 [2024-11-24 01:32:37,808 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:32:37,812 INFO L435 NwaCegarLoop]: 44 mSDtfsCounter, 12 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:32:37,812 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 118 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:32:37,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-11-24 01:32:37,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 44. [2024-11-24 01:32:37,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 31 states have (on average 1.6129032258064515) internal successors, (50), 43 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:32:37,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 50 transitions. [2024-11-24 01:32:37,849 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 50 transitions. Word has length 8 [2024-11-24 01:32:37,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:32:37,849 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 50 transitions. [2024-11-24 01:32:37,850 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:32:37,850 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 50 transitions. [2024-11-24 01:32:37,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-24 01:32:37,850 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:32:37,850 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:32:37,850 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-24 01:32:37,851 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-24 01:32:37,851 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:32:37,851 INFO L85 PathProgramCache]: Analyzing trace with hash 178583535, now seen corresponding path program 1 times [2024-11-24 01:32:37,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:32:37,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016892568] [2024-11-24 01:32:37,851 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:32:37,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:32:37,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:32:38,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:32:38,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:32:38,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016892568] [2024-11-24 01:32:38,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016892568] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:32:38,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:32:38,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:32:38,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830244970] [2024-11-24 01:32:38,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:32:38,452 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:32:38,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:32:38,453 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:32:38,453 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:32:38,453 INFO L87 Difference]: Start difference. First operand 44 states and 50 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:32:38,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:32:38,585 INFO L93 Difference]: Finished difference Result 62 states and 71 transitions. [2024-11-24 01:32:38,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:32:38,585 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-24 01:32:38,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:32:38,586 INFO L225 Difference]: With dead ends: 62 [2024-11-24 01:32:38,586 INFO L226 Difference]: Without dead ends: 62 [2024-11-24 01:32:38,586 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 [2024-11-24 01:32:38,587 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 51 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:32:38,587 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 73 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:32:38,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-11-24 01:32:38,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 42. [2024-11-24 01:32:38,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 31 states have (on average 1.5483870967741935) internal successors, (48), 41 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) [2024-11-24 01:32:38,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2024-11-24 01:32:38,594 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 8 [2024-11-24 01:32:38,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:32:38,594 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2024-11-24 01:32:38,597 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:32:38,597 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2024-11-24 01:32:38,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-24 01:32:38,597 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:32:38,597 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:32:38,597 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-24 01:32:38,599 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-24 01:32:38,599 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:32:38,599 INFO L85 PathProgramCache]: Analyzing trace with hash 178583536, now seen corresponding path program 1 times [2024-11-24 01:32:38,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:32:38,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663217510] [2024-11-24 01:32:38,600 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:32:38,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:32:38,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:32:38,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:32:38,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:32:38,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663217510] [2024-11-24 01:32:38,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663217510] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:32:38,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:32:38,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 01:32:38,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646731577] [2024-11-24 01:32:38,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:32:38,942 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 01:32:38,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:32:38,942 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 01:32:38,942 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:32:38,943 INFO L87 Difference]: Start difference. First operand 42 states and 48 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:32:39,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:32:39,075 INFO L93 Difference]: Finished difference Result 46 states and 53 transitions. [2024-11-24 01:32:39,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:32:39,076 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-24 01:32:39,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:32:39,077 INFO L225 Difference]: With dead ends: 46 [2024-11-24 01:32:39,077 INFO L226 Difference]: Without dead ends: 46 [2024-11-24 01:32:39,077 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-24 01:32:39,078 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 25 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:32:39,078 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 88 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:32:39,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-11-24 01:32:39,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2024-11-24 01:32:39,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 34 states have (on average 1.5294117647058822) internal successors, (52), 44 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:32:39,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 52 transitions. [2024-11-24 01:32:39,084 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 52 transitions. Word has length 8 [2024-11-24 01:32:39,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:32:39,084 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 52 transitions. [2024-11-24 01:32:39,084 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:32:39,085 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 52 transitions. [2024-11-24 01:32:39,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-24 01:32:39,085 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:32:39,085 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:32:39,086 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-24 01:32:39,087 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-24 01:32:39,089 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:32:39,089 INFO L85 PathProgramCache]: Analyzing trace with hash 631530201, now seen corresponding path program 1 times [2024-11-24 01:32:39,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:32:39,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116854885] [2024-11-24 01:32:39,090 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:32:39,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:32:39,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:32:39,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:32:39,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:32:39,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116854885] [2024-11-24 01:32:39,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116854885] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:32:39,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:32:39,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 01:32:39,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191482536] [2024-11-24 01:32:39,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:32:39,156 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:32:39,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:32:39,157 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:32:39,157 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:32:39,157 INFO L87 Difference]: Start difference. First operand 45 states and 52 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 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) [2024-11-24 01:32:39,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:32:39,204 INFO L93 Difference]: Finished difference Result 63 states and 73 transitions. [2024-11-24 01:32:39,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 01:32:39,207 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 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 [2024-11-24 01:32:39,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:32:39,207 INFO L225 Difference]: With dead ends: 63 [2024-11-24 01:32:39,207 INFO L226 Difference]: Without dead ends: 63 [2024-11-24 01:32:39,207 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:32:39,208 INFO L435 NwaCegarLoop]: 40 mSDtfsCounter, 10 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:32:39,208 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 107 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:32:39,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-11-24 01:32:39,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 57. [2024-11-24 01:32:39,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 46 states have (on average 1.4565217391304348) internal successors, (67), 56 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:32:39,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 67 transitions. [2024-11-24 01:32:39,216 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 67 transitions. Word has length 10 [2024-11-24 01:32:39,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:32:39,219 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 67 transitions. [2024-11-24 01:32:39,219 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 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) [2024-11-24 01:32:39,220 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 67 transitions. [2024-11-24 01:32:39,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-24 01:32:39,220 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:32:39,220 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:32:39,220 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-24 01:32:39,220 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-24 01:32:39,221 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:32:39,221 INFO L85 PathProgramCache]: Analyzing trace with hash 631532380, now seen corresponding path program 1 times [2024-11-24 01:32:39,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:32:39,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176741683] [2024-11-24 01:32:39,221 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:32:39,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:32:39,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:32:39,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:32:39,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:32:39,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176741683] [2024-11-24 01:32:39,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176741683] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:32:39,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:32:39,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:32:39,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956765322] [2024-11-24 01:32:39,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:32:39,433 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:32:39,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:32:39,433 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:32:39,433 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:32:39,433 INFO L87 Difference]: Start difference. First operand 57 states and 67 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 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) [2024-11-24 01:32:39,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:32:39,492 INFO L93 Difference]: Finished difference Result 68 states and 79 transitions. [2024-11-24 01:32:39,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 01:32:39,492 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 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 [2024-11-24 01:32:39,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:32:39,493 INFO L225 Difference]: With dead ends: 68 [2024-11-24 01:32:39,493 INFO L226 Difference]: Without dead ends: 68 [2024-11-24 01:32:39,493 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:32:39,494 INFO L435 NwaCegarLoop]: 39 mSDtfsCounter, 7 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:32:39,494 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 100 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:32:39,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-11-24 01:32:39,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 66. [2024-11-24 01:32:39,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 55 states have (on average 1.4363636363636363) internal successors, (79), 65 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:32:39,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 79 transitions. [2024-11-24 01:32:39,499 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 79 transitions. Word has length 10 [2024-11-24 01:32:39,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:32:39,499 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 79 transitions. [2024-11-24 01:32:39,500 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 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) [2024-11-24 01:32:39,500 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 79 transitions. [2024-11-24 01:32:39,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-24 01:32:39,500 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:32:39,500 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:32:39,500 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-24 01:32:39,501 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-24 01:32:39,501 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:32:39,501 INFO L85 PathProgramCache]: Analyzing trace with hash -1888429733, now seen corresponding path program 1 times [2024-11-24 01:32:39,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:32:39,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595752407] [2024-11-24 01:32:39,501 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:32:39,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:32:39,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:32:39,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:32:39,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:32:39,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595752407] [2024-11-24 01:32:39,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595752407] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:32:39,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:32:39,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 01:32:39,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952538043] [2024-11-24 01:32:39,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:32:39,677 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 01:32:39,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:32:39,677 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 01:32:39,679 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:32:39,679 INFO L87 Difference]: Start difference. First operand 66 states and 79 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 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) [2024-11-24 01:32:39,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:32:39,764 INFO L93 Difference]: Finished difference Result 65 states and 76 transitions. [2024-11-24 01:32:39,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:32:39,765 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 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 [2024-11-24 01:32:39,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:32:39,765 INFO L225 Difference]: With dead ends: 65 [2024-11-24 01:32:39,765 INFO L226 Difference]: Without dead ends: 65 [2024-11-24 01:32:39,765 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:32:39,766 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 24 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:32:39,766 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 96 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:32:39,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2024-11-24 01:32:39,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 64. [2024-11-24 01:32:39,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 55 states have (on average 1.3818181818181818) internal successors, (76), 63 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:32:39,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 76 transitions. [2024-11-24 01:32:39,779 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 76 transitions. Word has length 10 [2024-11-24 01:32:39,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:32:39,780 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 76 transitions. [2024-11-24 01:32:39,780 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 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) [2024-11-24 01:32:39,780 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 76 transitions. [2024-11-24 01:32:39,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-24 01:32:39,780 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:32:39,780 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:32:39,780 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-24 01:32:39,781 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-24 01:32:39,781 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:32:39,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1888429732, now seen corresponding path program 1 times [2024-11-24 01:32:39,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:32:39,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392297296] [2024-11-24 01:32:39,781 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:32:39,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:32:39,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:32:40,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:32:40,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:32:40,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392297296] [2024-11-24 01:32:40,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392297296] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:32:40,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:32:40,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 01:32:40,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335414234] [2024-11-24 01:32:40,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:32:40,009 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 01:32:40,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:32:40,010 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 01:32:40,010 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-24 01:32:40,010 INFO L87 Difference]: Start difference. First operand 64 states and 76 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 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) [2024-11-24 01:32:40,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:32:40,121 INFO L93 Difference]: Finished difference Result 72 states and 86 transitions. [2024-11-24 01:32:40,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 01:32:40,121 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 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 [2024-11-24 01:32:40,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:32:40,122 INFO L225 Difference]: With dead ends: 72 [2024-11-24 01:32:40,122 INFO L226 Difference]: Without dead ends: 72 [2024-11-24 01:32:40,122 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-24 01:32:40,123 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 24 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:32:40,123 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 86 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:32:40,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-11-24 01:32:40,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 70. [2024-11-24 01:32:40,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 61 states have (on average 1.3770491803278688) internal successors, (84), 69 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:32:40,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 84 transitions. [2024-11-24 01:32:40,136 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 84 transitions. Word has length 10 [2024-11-24 01:32:40,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:32:40,136 INFO L471 AbstractCegarLoop]: Abstraction has 70 states and 84 transitions. [2024-11-24 01:32:40,136 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 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) [2024-11-24 01:32:40,136 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 84 transitions. [2024-11-24 01:32:40,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-24 01:32:40,137 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:32:40,137 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:32:40,137 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-24 01:32:40,137 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-24 01:32:40,137 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:32:40,137 INFO L85 PathProgramCache]: Analyzing trace with hash -177814246, now seen corresponding path program 1 times [2024-11-24 01:32:40,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:32:40,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054143675] [2024-11-24 01:32:40,138 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:32:40,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:32:40,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:32:40,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:32:40,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:32:40,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054143675] [2024-11-24 01:32:40,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054143675] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:32:40,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:32:40,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 01:32:40,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902072175] [2024-11-24 01:32:40,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:32:40,357 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 01:32:40,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:32:40,357 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 01:32:40,357 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:32:40,357 INFO L87 Difference]: Start difference. First operand 70 states and 84 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 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) [2024-11-24 01:32:40,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:32:40,440 INFO L93 Difference]: Finished difference Result 85 states and 101 transitions. [2024-11-24 01:32:40,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:32:40,442 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 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 [2024-11-24 01:32:40,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:32:40,443 INFO L225 Difference]: With dead ends: 85 [2024-11-24 01:32:40,443 INFO L226 Difference]: Without dead ends: 85 [2024-11-24 01:32:40,443 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:32:40,444 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 27 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:32:40,444 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 83 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:32:40,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-11-24 01:32:40,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 70. [2024-11-24 01:32:40,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 61 states have (on average 1.3770491803278688) internal successors, (84), 69 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:32:40,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 84 transitions. [2024-11-24 01:32:40,453 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 84 transitions. Word has length 10 [2024-11-24 01:32:40,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:32:40,453 INFO L471 AbstractCegarLoop]: Abstraction has 70 states and 84 transitions. [2024-11-24 01:32:40,453 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 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) [2024-11-24 01:32:40,456 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 84 transitions. [2024-11-24 01:32:40,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-24 01:32:40,457 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:32:40,457 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:32:40,457 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-24 01:32:40,457 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-24 01:32:40,457 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:32:40,457 INFO L85 PathProgramCache]: Analyzing trace with hash -1897332705, now seen corresponding path program 1 times [2024-11-24 01:32:40,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:32:40,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204870293] [2024-11-24 01:32:40,458 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:32:40,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:32:40,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:32:40,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:32:40,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:32:40,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204870293] [2024-11-24 01:32:40,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204870293] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:32:40,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:32:40,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:32:40,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004378179] [2024-11-24 01:32:40,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:32:40,608 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:32:40,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:32:40,608 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:32:40,609 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:32:40,609 INFO L87 Difference]: Start difference. First operand 70 states and 84 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:32:40,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:32:40,635 INFO L93 Difference]: Finished difference Result 77 states and 90 transitions. [2024-11-24 01:32:40,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 01:32:40,635 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-24 01:32:40,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:32:40,636 INFO L225 Difference]: With dead ends: 77 [2024-11-24 01:32:40,636 INFO L226 Difference]: Without dead ends: 77 [2024-11-24 01:32:40,636 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:32:40,637 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 12 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:32:40,637 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 69 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:32:40,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2024-11-24 01:32:40,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 75. [2024-11-24 01:32:40,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 66 states have (on average 1.3636363636363635) internal successors, (90), 74 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:32:40,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 90 transitions. [2024-11-24 01:32:40,641 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 90 transitions. Word has length 11 [2024-11-24 01:32:40,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:32:40,641 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 90 transitions. [2024-11-24 01:32:40,642 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:32:40,642 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 90 transitions. [2024-11-24 01:32:40,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-24 01:32:40,642 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:32:40,642 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:32:40,642 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-24 01:32:40,642 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-24 01:32:40,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:32:40,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1588287965, now seen corresponding path program 1 times [2024-11-24 01:32:40,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:32:40,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258058487] [2024-11-24 01:32:40,643 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:32:40,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:32:40,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:32:40,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:32:40,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:32:40,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258058487] [2024-11-24 01:32:40,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258058487] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:32:40,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:32:40,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 01:32:40,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182774769] [2024-11-24 01:32:40,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:32:40,775 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 01:32:40,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:32:40,775 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 01:32:40,775 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:32:40,776 INFO L87 Difference]: Start difference. First operand 75 states and 90 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:32:40,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:32:40,805 INFO L93 Difference]: Finished difference Result 74 states and 89 transitions. [2024-11-24 01:32:40,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:32:40,805 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-24 01:32:40,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:32:40,806 INFO L225 Difference]: With dead ends: 74 [2024-11-24 01:32:40,806 INFO L226 Difference]: Without dead ends: 74 [2024-11-24 01:32:40,806 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:32:40,807 INFO L435 NwaCegarLoop]: 29 mSDtfsCounter, 22 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:32:40,807 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 67 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:32:40,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2024-11-24 01:32:40,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 69. [2024-11-24 01:32:40,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 61 states have (on average 1.360655737704918) internal successors, (83), 68 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:32:40,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 83 transitions. [2024-11-24 01:32:40,810 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 83 transitions. Word has length 11 [2024-11-24 01:32:40,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:32:40,810 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 83 transitions. [2024-11-24 01:32:40,810 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:32:40,810 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 83 transitions. [2024-11-24 01:32:40,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-24 01:32:40,811 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:32:40,811 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:32:40,811 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-24 01:32:40,811 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-24 01:32:40,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:32:40,811 INFO L85 PathProgramCache]: Analyzing trace with hash -1099378263, now seen corresponding path program 1 times [2024-11-24 01:32:40,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:32:40,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980123992] [2024-11-24 01:32:40,812 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:32:40,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:32:40,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:32:41,130 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:32:41,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:32:41,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980123992] [2024-11-24 01:32:41,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980123992] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:32:41,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1335775011] [2024-11-24 01:32:41,131 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:32:41,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:32:41,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:32:41,136 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:32:41,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-24 01:32:41,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:32:41,210 INFO L256 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-24 01:32:41,216 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:32:41,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-24 01:32:41,317 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2024-11-24 01:32:41,328 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2024-11-24 01:32:41,623 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:32:41,623 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:32:41,921 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-24 01:32:41,981 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:32:41,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1335775011] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:32:41,981 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:32:41,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 15 [2024-11-24 01:32:41,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236853827] [2024-11-24 01:32:41,981 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:32:41,981 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-24 01:32:41,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:32:41,982 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-24 01:32:41,982 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2024-11-24 01:32:41,982 INFO L87 Difference]: Start difference. First operand 69 states and 83 transitions. Second operand has 16 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:32:42,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:32:42,229 INFO L93 Difference]: Finished difference Result 72 states and 87 transitions. [2024-11-24 01:32:42,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-24 01:32:42,230 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-11-24 01:32:42,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:32:42,231 INFO L225 Difference]: With dead ends: 72 [2024-11-24 01:32:42,231 INFO L226 Difference]: Without dead ends: 72 [2024-11-24 01:32:42,231 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=123, Invalid=257, Unknown=0, NotChecked=0, Total=380 [2024-11-24 01:32:42,232 INFO L435 NwaCegarLoop]: 32 mSDtfsCounter, 32 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:32:42,232 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 154 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:32:42,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-11-24 01:32:42,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 64. [2024-11-24 01:32:42,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 57 states have (on average 1.3508771929824561) internal successors, (77), 63 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) [2024-11-24 01:32:42,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 77 transitions. [2024-11-24 01:32:42,236 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 77 transitions. Word has length 12 [2024-11-24 01:32:42,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:32:42,236 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 77 transitions. [2024-11-24 01:32:42,236 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:32:42,236 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 77 transitions. [2024-11-24 01:32:42,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-24 01:32:42,237 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:32:42,237 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:32:42,248 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-24 01:32:42,441 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-24 01:32:42,442 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-24 01:32:42,442 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:32:42,442 INFO L85 PathProgramCache]: Analyzing trace with hash -1669001153, now seen corresponding path program 1 times [2024-11-24 01:32:42,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:32:42,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57366190] [2024-11-24 01:32:42,442 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:32:42,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:32:42,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:32:42,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:32:42,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:32:42,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57366190] [2024-11-24 01:32:42,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57366190] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:32:42,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:32:42,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 01:32:42,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618548391] [2024-11-24 01:32:42,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:32:42,565 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 01:32:42,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:32:42,566 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 01:32:42,566 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:32:42,566 INFO L87 Difference]: Start difference. First operand 64 states and 77 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:32:42,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:32:42,635 INFO L93 Difference]: Finished difference Result 63 states and 76 transitions. [2024-11-24 01:32:42,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:32:42,636 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-24 01:32:42,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:32:42,636 INFO L225 Difference]: With dead ends: 63 [2024-11-24 01:32:42,636 INFO L226 Difference]: Without dead ends: 63 [2024-11-24 01:32:42,637 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 [2024-11-24 01:32:42,637 INFO L435 NwaCegarLoop]: 27 mSDtfsCounter, 25 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:32:42,637 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 76 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:32:42,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-11-24 01:32:42,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2024-11-24 01:32:42,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 57 states have (on average 1.3333333333333333) internal successors, (76), 62 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:32:42,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 76 transitions. [2024-11-24 01:32:42,641 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 76 transitions. Word has length 14 [2024-11-24 01:32:42,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:32:42,641 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 76 transitions. [2024-11-24 01:32:42,641 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:32:42,641 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 76 transitions. [2024-11-24 01:32:42,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-24 01:32:42,642 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:32:42,642 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:32:42,642 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-24 01:32:42,642 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-24 01:32:42,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:32:42,643 INFO L85 PathProgramCache]: Analyzing trace with hash -1669001152, now seen corresponding path program 1 times [2024-11-24 01:32:42,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:32:42,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926785524] [2024-11-24 01:32:42,644 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:32:42,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:32:42,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:32:42,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:32:42,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:32:42,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926785524] [2024-11-24 01:32:42,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926785524] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:32:42,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:32:42,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-24 01:32:42,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302079022] [2024-11-24 01:32:42,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:32:42,813 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 01:32:42,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:32:42,814 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 01:32:42,814 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-24 01:32:42,814 INFO L87 Difference]: Start difference. First operand 63 states and 76 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:32:42,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:32:42,914 INFO L93 Difference]: Finished difference Result 70 states and 82 transitions. [2024-11-24 01:32:42,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-24 01:32:42,914 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-24 01:32:42,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:32:42,915 INFO L225 Difference]: With dead ends: 70 [2024-11-24 01:32:42,915 INFO L226 Difference]: Without dead ends: 70 [2024-11-24 01:32:42,915 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-24 01:32:42,917 INFO L435 NwaCegarLoop]: 36 mSDtfsCounter, 31 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:32:42,917 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 132 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:32:42,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-11-24 01:32:42,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 65. [2024-11-24 01:32:42,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 59 states have (on average 1.3220338983050848) internal successors, (78), 64 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:32:42,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 78 transitions. [2024-11-24 01:32:42,923 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 78 transitions. Word has length 14 [2024-11-24 01:32:42,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:32:42,927 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 78 transitions. [2024-11-24 01:32:42,927 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:32:42,927 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 78 transitions. [2024-11-24 01:32:42,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-24 01:32:42,928 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:32:42,928 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:32:42,928 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-24 01:32:42,928 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-24 01:32:42,928 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:32:42,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1315344789, now seen corresponding path program 1 times [2024-11-24 01:32:42,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:32:42,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964724790] [2024-11-24 01:32:42,929 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:32:42,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:32:42,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:32:43,320 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:32:43,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:32:43,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964724790] [2024-11-24 01:32:43,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964724790] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:32:43,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1883725290] [2024-11-24 01:32:43,321 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:32:43,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:32:43,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:32:43,323 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:32:43,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-24 01:32:43,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:32:43,390 INFO L256 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-24 01:32:43,392 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:32:43,428 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2024-11-24 01:32:43,438 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 8 treesize of output 1 [2024-11-24 01:32:43,733 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:32:43,733 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:32:44,050 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:32:44,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1883725290] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:32:44,051 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:32:44,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 19 [2024-11-24 01:32:44,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860498648] [2024-11-24 01:32:44,053 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:32:44,054 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-24 01:32:44,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:32:44,055 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-24 01:32:44,055 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2024-11-24 01:32:44,056 INFO L87 Difference]: Start difference. First operand 65 states and 78 transitions. Second operand has 20 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 20 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:32:44,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:32:44,431 INFO L93 Difference]: Finished difference Result 74 states and 88 transitions. [2024-11-24 01:32:44,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-24 01:32:44,431 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 20 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-24 01:32:44,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:32:44,433 INFO L225 Difference]: With dead ends: 74 [2024-11-24 01:32:44,433 INFO L226 Difference]: Without dead ends: 74 [2024-11-24 01:32:44,434 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=225, Invalid=477, Unknown=0, NotChecked=0, Total=702 [2024-11-24 01:32:44,434 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 71 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:32:44,435 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 136 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:32:44,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2024-11-24 01:32:44,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 58. [2024-11-24 01:32:44,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 53 states have (on average 1.2830188679245282) internal successors, (68), 57 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) [2024-11-24 01:32:44,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 68 transitions. [2024-11-24 01:32:44,438 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 68 transitions. Word has length 14 [2024-11-24 01:32:44,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:32:44,438 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 68 transitions. [2024-11-24 01:32:44,438 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 20 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:32:44,439 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 68 transitions. [2024-11-24 01:32:44,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-24 01:32:44,439 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:32:44,439 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:32:44,453 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-24 01:32:44,640 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-24 01:32:44,641 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-24 01:32:44,641 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:32:44,642 INFO L85 PathProgramCache]: Analyzing trace with hash 61543571, now seen corresponding path program 1 times [2024-11-24 01:32:44,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:32:44,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373348946] [2024-11-24 01:32:44,642 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:32:44,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:32:44,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:32:44,907 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:32:44,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:32:44,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373348946] [2024-11-24 01:32:44,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373348946] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:32:44,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:32:44,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-24 01:32:44,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436155387] [2024-11-24 01:32:44,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:32:44,908 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 01:32:44,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:32:44,909 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 01:32:44,909 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-24 01:32:44,909 INFO L87 Difference]: Start difference. First operand 58 states and 68 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:32:44,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:32:44,967 INFO L93 Difference]: Finished difference Result 57 states and 67 transitions. [2024-11-24 01:32:44,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 01:32:44,967 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-24 01:32:44,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:32:44,968 INFO L225 Difference]: With dead ends: 57 [2024-11-24 01:32:44,968 INFO L226 Difference]: Without dead ends: 57 [2024-11-24 01:32:44,968 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-24 01:32:44,969 INFO L435 NwaCegarLoop]: 30 mSDtfsCounter, 7 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:32:44,969 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 80 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:32:44,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-11-24 01:32:44,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 46. [2024-11-24 01:32:44,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 42 states have (on average 1.2619047619047619) internal successors, (53), 45 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) [2024-11-24 01:32:44,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 53 transitions. [2024-11-24 01:32:44,971 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 53 transitions. Word has length 14 [2024-11-24 01:32:44,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:32:44,972 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 53 transitions. [2024-11-24 01:32:44,972 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:32:44,972 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 53 transitions. [2024-11-24 01:32:44,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-24 01:32:44,972 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:32:44,973 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:32:44,973 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-24 01:32:44,973 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-24 01:32:44,973 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:32:44,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1623072646, now seen corresponding path program 1 times [2024-11-24 01:32:44,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:32:44,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942912746] [2024-11-24 01:32:44,974 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:32:44,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:32:44,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:32:45,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:32:45,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:32:45,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942912746] [2024-11-24 01:32:45,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942912746] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:32:45,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:32:45,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 01:32:45,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152317905] [2024-11-24 01:32:45,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:32:45,046 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 01:32:45,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:32:45,047 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 01:32:45,047 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-24 01:32:45,047 INFO L87 Difference]: Start difference. First operand 46 states and 53 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:32:45,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:32:45,120 INFO L93 Difference]: Finished difference Result 46 states and 53 transitions. [2024-11-24 01:32:45,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 01:32:45,121 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2024-11-24 01:32:45,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:32:45,121 INFO L225 Difference]: With dead ends: 46 [2024-11-24 01:32:45,121 INFO L226 Difference]: Without dead ends: 46 [2024-11-24 01:32:45,122 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-24 01:32:45,122 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 33 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:32:45,122 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 87 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:32:45,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-11-24 01:32:45,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2024-11-24 01:32:45,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 42 states have (on average 1.2380952380952381) internal successors, (52), 44 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:32:45,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 52 transitions. [2024-11-24 01:32:45,124 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 52 transitions. Word has length 17 [2024-11-24 01:32:45,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:32:45,124 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 52 transitions. [2024-11-24 01:32:45,124 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:32:45,125 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 52 transitions. [2024-11-24 01:32:45,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-24 01:32:45,125 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:32:45,125 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:32:45,125 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-24 01:32:45,126 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-24 01:32:45,126 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:32:45,126 INFO L85 PathProgramCache]: Analyzing trace with hash 1623072647, now seen corresponding path program 1 times [2024-11-24 01:32:45,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:32:45,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737177411] [2024-11-24 01:32:45,126 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:32:45,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:32:45,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:32:45,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:32:45,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:32:45,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737177411] [2024-11-24 01:32:45,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737177411] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:32:45,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:32:45,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-24 01:32:45,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983422636] [2024-11-24 01:32:45,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:32:45,349 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-24 01:32:45,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:32:45,350 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-24 01:32:45,350 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-24 01:32:45,350 INFO L87 Difference]: Start difference. First operand 45 states and 52 transitions. Second operand has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:32:45,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:32:45,490 INFO L93 Difference]: Finished difference Result 53 states and 61 transitions. [2024-11-24 01:32:45,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-24 01:32:45,490 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2024-11-24 01:32:45,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:32:45,491 INFO L225 Difference]: With dead ends: 53 [2024-11-24 01:32:45,491 INFO L226 Difference]: Without dead ends: 53 [2024-11-24 01:32:45,491 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-24 01:32:45,492 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 34 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:32:45,492 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 118 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:32:45,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-11-24 01:32:45,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 47. [2024-11-24 01:32:45,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 44 states have (on average 1.2272727272727273) internal successors, (54), 46 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) [2024-11-24 01:32:45,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 54 transitions. [2024-11-24 01:32:45,495 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 54 transitions. Word has length 17 [2024-11-24 01:32:45,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:32:45,495 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 54 transitions. [2024-11-24 01:32:45,495 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:32:45,495 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 54 transitions. [2024-11-24 01:32:45,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-24 01:32:45,501 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:32:45,501 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:32:45,501 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-24 01:32:45,501 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-24 01:32:45,502 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:32:45,502 INFO L85 PathProgramCache]: Analyzing trace with hash -1911839478, now seen corresponding path program 1 times [2024-11-24 01:32:45,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:32:45,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893549496] [2024-11-24 01:32:45,502 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:32:45,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:32:45,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:32:45,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:32:45,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:32:45,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893549496] [2024-11-24 01:32:45,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893549496] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:32:45,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:32:45,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:32:45,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134843127] [2024-11-24 01:32:45,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:32:45,653 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:32:45,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:32:45,653 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:32:45,653 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:32:45,653 INFO L87 Difference]: Start difference. First operand 47 states and 54 transitions. Second operand has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 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) [2024-11-24 01:32:45,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:32:45,678 INFO L93 Difference]: Finished difference Result 46 states and 53 transitions. [2024-11-24 01:32:45,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 01:32:45,678 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-24 01:32:45,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:32:45,679 INFO L225 Difference]: With dead ends: 46 [2024-11-24 01:32:45,679 INFO L226 Difference]: Without dead ends: 44 [2024-11-24 01:32:45,679 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 [2024-11-24 01:32:45,679 INFO L435 NwaCegarLoop]: 27 mSDtfsCounter, 15 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:32:45,680 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 52 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:32:45,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-11-24 01:32:45,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2024-11-24 01:32:45,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 42 states have (on average 1.2142857142857142) internal successors, (51), 43 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:32:45,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 51 transitions. [2024-11-24 01:32:45,681 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 51 transitions. Word has length 21 [2024-11-24 01:32:45,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:32:45,682 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 51 transitions. [2024-11-24 01:32:45,682 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 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) [2024-11-24 01:32:45,682 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 51 transitions. [2024-11-24 01:32:45,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-24 01:32:45,683 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:32:45,683 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:32:45,683 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-24 01:32:45,683 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-24 01:32:45,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:32:45,684 INFO L85 PathProgramCache]: Analyzing trace with hash 862567627, now seen corresponding path program 1 times [2024-11-24 01:32:45,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:32:45,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091139194] [2024-11-24 01:32:45,684 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:32:45,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:32:45,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:32:45,911 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:32:45,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:32:45,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091139194] [2024-11-24 01:32:45,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091139194] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:32:45,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:32:45,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-24 01:32:45,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788133596] [2024-11-24 01:32:45,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:32:45,912 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-24 01:32:45,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:32:45,913 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-24 01:32:45,913 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-24 01:32:45,913 INFO L87 Difference]: Start difference. First operand 44 states and 51 transitions. Second operand has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:32:46,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:32:46,034 INFO L93 Difference]: Finished difference Result 59 states and 66 transitions. [2024-11-24 01:32:46,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-24 01:32:46,034 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2024-11-24 01:32:46,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:32:46,035 INFO L225 Difference]: With dead ends: 59 [2024-11-24 01:32:46,035 INFO L226 Difference]: Without dead ends: 59 [2024-11-24 01:32:46,035 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-11-24 01:32:46,036 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 11 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:32:46,036 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 195 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:32:46,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-11-24 01:32:46,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 58. [2024-11-24 01:32:46,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 56 states have (on average 1.1785714285714286) internal successors, (66), 57 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) [2024-11-24 01:32:46,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 66 transitions. [2024-11-24 01:32:46,038 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 66 transitions. Word has length 22 [2024-11-24 01:32:46,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:32:46,038 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 66 transitions. [2024-11-24 01:32:46,038 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:32:46,039 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 66 transitions. [2024-11-24 01:32:46,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-24 01:32:46,039 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:32:46,039 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:32:46,039 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-24 01:32:46,039 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-24 01:32:46,040 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:32:46,040 INFO L85 PathProgramCache]: Analyzing trace with hash 862569293, now seen corresponding path program 1 times [2024-11-24 01:32:46,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:32:46,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690033385] [2024-11-24 01:32:46,040 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:32:46,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:32:46,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:32:46,268 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:32:46,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:32:46,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690033385] [2024-11-24 01:32:46,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690033385] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:32:46,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:32:46,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-24 01:32:46,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449395083] [2024-11-24 01:32:46,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:32:46,271 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-24 01:32:46,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:32:46,272 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-24 01:32:46,272 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-24 01:32:46,272 INFO L87 Difference]: Start difference. First operand 58 states and 66 transitions. Second operand has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:32:46,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:32:46,344 INFO L93 Difference]: Finished difference Result 92 states and 100 transitions. [2024-11-24 01:32:46,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-24 01:32:46,345 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2024-11-24 01:32:46,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:32:46,345 INFO L225 Difference]: With dead ends: 92 [2024-11-24 01:32:46,346 INFO L226 Difference]: Without dead ends: 76 [2024-11-24 01:32:46,346 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-11-24 01:32:46,346 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 12 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:32:46,346 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 184 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:32:46,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2024-11-24 01:32:46,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2024-11-24 01:32:46,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 73 states have (on average 1.1506849315068493) internal successors, (84), 74 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:32:46,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 84 transitions. [2024-11-24 01:32:46,351 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 84 transitions. Word has length 22 [2024-11-24 01:32:46,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:32:46,351 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 84 transitions. [2024-11-24 01:32:46,351 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:32:46,351 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 84 transitions. [2024-11-24 01:32:46,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-24 01:32:46,352 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:32:46,352 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:32:46,352 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-24 01:32:46,352 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-24 01:32:46,353 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:32:46,353 INFO L85 PathProgramCache]: Analyzing trace with hash -826376115, now seen corresponding path program 1 times [2024-11-24 01:32:46,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:32:46,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081352799] [2024-11-24 01:32:46,353 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:32:46,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:32:46,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:32:46,651 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:32:46,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:32:46,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081352799] [2024-11-24 01:32:46,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081352799] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:32:46,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:32:46,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-24 01:32:46,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657343644] [2024-11-24 01:32:46,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:32:46,652 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-24 01:32:46,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:32:46,652 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-24 01:32:46,652 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-11-24 01:32:46,652 INFO L87 Difference]: Start difference. First operand 75 states and 84 transitions. Second operand has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:32:46,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:32:46,791 INFO L93 Difference]: Finished difference Result 110 states and 120 transitions. [2024-11-24 01:32:46,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-24 01:32:46,792 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2024-11-24 01:32:46,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:32:46,793 INFO L225 Difference]: With dead ends: 110 [2024-11-24 01:32:46,793 INFO L226 Difference]: Without dead ends: 98 [2024-11-24 01:32:46,793 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2024-11-24 01:32:46,794 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 25 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:32:46,794 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 173 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:32:46,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2024-11-24 01:32:46,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 77. [2024-11-24 01:32:46,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 75 states have (on average 1.16) internal successors, (87), 76 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:32:46,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 87 transitions. [2024-11-24 01:32:46,797 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 87 transitions. Word has length 22 [2024-11-24 01:32:46,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:32:46,798 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 87 transitions. [2024-11-24 01:32:46,798 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:32:46,798 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 87 transitions. [2024-11-24 01:32:46,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-24 01:32:46,799 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:32:46,799 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:32:46,799 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-24 01:32:46,800 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-24 01:32:46,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:32:46,800 INFO L85 PathProgramCache]: Analyzing trace with hash 44920843, now seen corresponding path program 1 times [2024-11-24 01:32:46,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:32:46,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539170369] [2024-11-24 01:32:46,800 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:32:46,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:32:46,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:32:47,056 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:32:47,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:32:47,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539170369] [2024-11-24 01:32:47,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539170369] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:32:47,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:32:47,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-24 01:32:47,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045318704] [2024-11-24 01:32:47,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:32:47,057 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-24 01:32:47,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:32:47,058 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-24 01:32:47,058 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-11-24 01:32:47,058 INFO L87 Difference]: Start difference. First operand 77 states and 87 transitions. Second operand has 11 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:32:47,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:32:47,162 INFO L93 Difference]: Finished difference Result 120 states and 133 transitions. [2024-11-24 01:32:47,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-24 01:32:47,163 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2024-11-24 01:32:47,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:32:47,163 INFO L225 Difference]: With dead ends: 120 [2024-11-24 01:32:47,163 INFO L226 Difference]: Without dead ends: 106 [2024-11-24 01:32:47,164 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-11-24 01:32:47,165 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 27 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:32:47,165 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 179 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:32:47,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2024-11-24 01:32:47,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 79. [2024-11-24 01:32:47,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 77 states have (on average 1.1688311688311688) internal successors, (90), 78 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:32:47,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 90 transitions. [2024-11-24 01:32:47,168 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 90 transitions. Word has length 22 [2024-11-24 01:32:47,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:32:47,168 INFO L471 AbstractCegarLoop]: Abstraction has 79 states and 90 transitions. [2024-11-24 01:32:47,169 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:32:47,169 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 90 transitions. [2024-11-24 01:32:47,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-24 01:32:47,169 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:32:47,169 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:32:47,169 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-24 01:32:47,169 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-24 01:32:47,170 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:32:47,170 INFO L85 PathProgramCache]: Analyzing trace with hash 235711238, now seen corresponding path program 1 times [2024-11-24 01:32:47,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:32:47,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240553154] [2024-11-24 01:32:47,170 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:32:47,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:32:47,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:32:47,554 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:32:47,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:32:47,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240553154] [2024-11-24 01:32:47,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240553154] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:32:47,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [421306354] [2024-11-24 01:32:47,554 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:32:47,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:32:47,555 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:32:47,557 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:32:47,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-24 01:32:47,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:32:47,663 INFO L256 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-24 01:32:47,665 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:32:47,831 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:32:47,831 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:32:48,060 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-24 01:32:48,101 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:32:48,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [421306354] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:32:48,102 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:32:48,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 23 [2024-11-24 01:32:48,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117437095] [2024-11-24 01:32:48,102 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:32:48,102 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-24 01:32:48,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:32:48,103 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-24 01:32:48,103 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=478, Unknown=0, NotChecked=0, Total=552 [2024-11-24 01:32:48,104 INFO L87 Difference]: Start difference. First operand 79 states and 90 transitions. Second operand has 24 states, 23 states have (on average 2.391304347826087) internal successors, (55), 24 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) [2024-11-24 01:32:48,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:32:48,450 INFO L93 Difference]: Finished difference Result 100 states and 111 transitions. [2024-11-24 01:32:48,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-24 01:32:48,451 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 2.391304347826087) internal successors, (55), 24 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) Word has length 26 [2024-11-24 01:32:48,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:32:48,451 INFO L225 Difference]: With dead ends: 100 [2024-11-24 01:32:48,451 INFO L226 Difference]: Without dead ends: 100 [2024-11-24 01:32:48,452 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=118, Invalid=694, Unknown=0, NotChecked=0, Total=812 [2024-11-24 01:32:48,452 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 81 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-24 01:32:48,453 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 272 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 275 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 01:32:48,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2024-11-24 01:32:48,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 89. [2024-11-24 01:32:48,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 87 states have (on average 1.160919540229885) internal successors, (101), 88 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:32:48,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 101 transitions. [2024-11-24 01:32:48,456 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 101 transitions. Word has length 26 [2024-11-24 01:32:48,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:32:48,456 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 101 transitions. [2024-11-24 01:32:48,456 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 2.391304347826087) internal successors, (55), 24 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) [2024-11-24 01:32:48,457 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 101 transitions. [2024-11-24 01:32:48,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-24 01:32:48,457 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:32:48,457 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:32:48,467 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-24 01:32:48,658 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:32:48,658 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-24 01:32:48,658 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:32:48,658 INFO L85 PathProgramCache]: Analyzing trace with hash -169782780, now seen corresponding path program 1 times [2024-11-24 01:32:48,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:32:48,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480786472] [2024-11-24 01:32:48,658 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:32:48,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:32:48,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:32:48,941 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:32:48,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:32:48,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480786472] [2024-11-24 01:32:48,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480786472] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:32:48,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [765229650] [2024-11-24 01:32:48,942 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:32:48,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:32:48,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:32:48,944 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:32:48,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-24 01:32:49,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:32:49,033 INFO L256 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-24 01:32:49,035 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:32:49,175 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:32:49,175 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:32:49,379 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-24 01:32:49,419 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:32:49,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [765229650] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:32:49,419 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:32:49,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 19 [2024-11-24 01:32:49,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868188744] [2024-11-24 01:32:49,419 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:32:49,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-24 01:32:49,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:32:49,420 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-24 01:32:49,420 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2024-11-24 01:32:49,421 INFO L87 Difference]: Start difference. First operand 89 states and 101 transitions. Second operand has 20 states, 19 states have (on average 2.789473684210526) internal successors, (53), 20 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) [2024-11-24 01:32:49,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:32:49,636 INFO L93 Difference]: Finished difference Result 119 states and 133 transitions. [2024-11-24 01:32:49,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-24 01:32:49,636 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.789473684210526) internal successors, (53), 20 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) Word has length 26 [2024-11-24 01:32:49,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:32:49,637 INFO L225 Difference]: With dead ends: 119 [2024-11-24 01:32:49,637 INFO L226 Difference]: Without dead ends: 119 [2024-11-24 01:32:49,638 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 39 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2024-11-24 01:32:49,638 INFO L435 NwaCegarLoop]: 41 mSDtfsCounter, 21 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-24 01:32:49,638 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 299 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 01:32:49,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2024-11-24 01:32:49,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 112. [2024-11-24 01:32:49,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 110 states have (on average 1.1545454545454545) internal successors, (127), 111 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:32:49,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 127 transitions. [2024-11-24 01:32:49,642 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 127 transitions. Word has length 26 [2024-11-24 01:32:49,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:32:49,643 INFO L471 AbstractCegarLoop]: Abstraction has 112 states and 127 transitions. [2024-11-24 01:32:49,643 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.789473684210526) internal successors, (53), 20 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) [2024-11-24 01:32:49,643 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 127 transitions. [2024-11-24 01:32:49,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-24 01:32:49,643 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:32:49,644 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:32:49,654 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-24 01:32:49,847 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:32:49,848 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-24 01:32:49,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:32:49,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1322153812, now seen corresponding path program 2 times [2024-11-24 01:32:49,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:32:49,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367482023] [2024-11-24 01:32:49,848 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 01:32:49,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:32:49,884 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 01:32:49,886 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:32:50,575 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:32:50,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:32:50,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367482023] [2024-11-24 01:32:50,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367482023] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:32:50,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [166562641] [2024-11-24 01:32:50,575 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 01:32:50,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:32:50,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:32:50,577 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:32:50,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-24 01:32:50,672 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 01:32:50,672 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:32:50,674 INFO L256 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-11-24 01:32:50,677 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:32:50,955 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 [2024-11-24 01:32:51,004 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-24 01:32:51,261 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-24 01:32:51,264 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-24 01:32:51,264 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 15 treesize of output 10 [2024-11-24 01:32:51,725 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-24 01:32:51,728 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-24 01:32:51,728 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 10 [2024-11-24 01:32:51,831 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:32:51,831 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:32:52,541 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 17 [2024-11-24 01:32:52,546 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 36 treesize of output 32 [2024-11-24 01:32:52,726 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 11 [2024-11-24 01:32:52,731 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 [2024-11-24 01:32:53,532 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:32:53,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [166562641] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:32:53,532 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:32:53,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 19, 19] total 49 [2024-11-24 01:32:53,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627418621] [2024-11-24 01:32:53,532 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:32:53,534 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-24 01:32:53,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:32:53,534 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-24 01:32:53,535 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=2206, Unknown=0, NotChecked=0, Total=2352 [2024-11-24 01:32:53,535 INFO L87 Difference]: Start difference. First operand 112 states and 127 transitions. Second operand has 49 states, 49 states have (on average 1.7142857142857142) internal successors, (84), 49 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:32:56,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:32:56,174 INFO L93 Difference]: Finished difference Result 171 states and 188 transitions. [2024-11-24 01:32:56,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-24 01:32:56,174 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.7142857142857142) internal successors, (84), 49 states have internal predecessors, (84), 0 states have call successors, (0), 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 [2024-11-24 01:32:56,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:32:56,175 INFO L225 Difference]: With dead ends: 171 [2024-11-24 01:32:56,175 INFO L226 Difference]: Without dead ends: 155 [2024-11-24 01:32:56,178 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1154 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=361, Invalid=5491, Unknown=0, NotChecked=0, Total=5852 [2024-11-24 01:32:56,178 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 79 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 1105 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 526 SdHoareTripleChecker+Invalid, 1109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-24 01:32:56,179 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 526 Invalid, 1109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1105 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-24 01:32:56,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2024-11-24 01:32:56,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 132. [2024-11-24 01:32:56,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 130 states have (on average 1.146153846153846) internal successors, (149), 131 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:32:56,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 149 transitions. [2024-11-24 01:32:56,183 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 149 transitions. Word has length 31 [2024-11-24 01:32:56,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:32:56,183 INFO L471 AbstractCegarLoop]: Abstraction has 132 states and 149 transitions. [2024-11-24 01:32:56,183 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.7142857142857142) internal successors, (84), 49 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:32:56,183 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 149 transitions. [2024-11-24 01:32:56,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-24 01:32:56,184 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:32:56,184 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:32:56,195 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-24 01:32:56,384 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-24 01:32:56,385 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-24 01:32:56,385 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:32:56,385 INFO L85 PathProgramCache]: Analyzing trace with hash 1431961873, now seen corresponding path program 2 times [2024-11-24 01:32:56,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:32:56,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030370090] [2024-11-24 01:32:56,385 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 01:32:56,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:32:56,412 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 01:32:56,412 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:32:57,071 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:32:57,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:32:57,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030370090] [2024-11-24 01:32:57,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030370090] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:32:57,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [853562236] [2024-11-24 01:32:57,072 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 01:32:57,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:32:57,072 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:32:57,075 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:32:57,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-24 01:32:57,174 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 01:32:57,174 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:32:57,181 INFO L256 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-24 01:32:57,183 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:32:57,301 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-24 01:32:57,493 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:32:57,494 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:32:57,529 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-24 01:32:57,531 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-24 01:32:57,628 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:32:57,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [853562236] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:32:57,628 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:32:57,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 28 [2024-11-24 01:32:57,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256293774] [2024-11-24 01:32:57,628 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:32:57,630 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-24 01:32:57,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:32:57,630 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-24 01:32:57,630 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=683, Unknown=0, NotChecked=0, Total=756 [2024-11-24 01:32:57,631 INFO L87 Difference]: Start difference. First operand 132 states and 149 transitions. Second operand has 28 states, 28 states have (on average 2.4642857142857144) internal successors, (69), 28 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) [2024-11-24 01:32:58,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:32:58,293 INFO L93 Difference]: Finished difference Result 250 states and 275 transitions. [2024-11-24 01:32:58,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-24 01:32:58,294 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.4642857142857144) internal successors, (69), 28 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2024-11-24 01:32:58,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:32:58,295 INFO L225 Difference]: With dead ends: 250 [2024-11-24 01:32:58,295 INFO L226 Difference]: Without dead ends: 228 [2024-11-24 01:32:58,295 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=135, Invalid=1425, Unknown=0, NotChecked=0, Total=1560 [2024-11-24 01:32:58,296 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 47 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 550 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 581 SdHoareTripleChecker+Invalid, 551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-24 01:32:58,296 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 581 Invalid, 551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 550 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-24 01:32:58,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2024-11-24 01:32:58,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 198. [2024-11-24 01:32:58,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 196 states have (on average 1.1479591836734695) internal successors, (225), 197 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:32:58,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 225 transitions. [2024-11-24 01:32:58,302 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 225 transitions. Word has length 34 [2024-11-24 01:32:58,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:32:58,303 INFO L471 AbstractCegarLoop]: Abstraction has 198 states and 225 transitions. [2024-11-24 01:32:58,303 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.4642857142857144) internal successors, (69), 28 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) [2024-11-24 01:32:58,303 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 225 transitions. [2024-11-24 01:32:58,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-24 01:32:58,304 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:32:58,304 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:32:58,316 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-24 01:32:58,504 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:32:58,504 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-24 01:32:58,505 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:32:58,505 INFO L85 PathProgramCache]: Analyzing trace with hash 420662020, now seen corresponding path program 1 times [2024-11-24 01:32:58,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:32:58,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510130732] [2024-11-24 01:32:58,505 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:32:58,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:32:58,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:32:59,200 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:32:59,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:32:59,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510130732] [2024-11-24 01:32:59,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510130732] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:32:59,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1631057529] [2024-11-24 01:32:59,200 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:32:59,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:32:59,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:32:59,204 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:32:59,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-24 01:32:59,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:32:59,306 INFO L256 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 69 conjuncts are in the unsatisfiable core [2024-11-24 01:32:59,310 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:32:59,522 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 [2024-11-24 01:32:59,559 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-24 01:32:59,926 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 9 treesize of output 3 [2024-11-24 01:33:00,005 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-24 01:33:00,005 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:33:00,383 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 17 [2024-11-24 01:33:00,387 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 28 treesize of output 24 [2024-11-24 01:33:00,395 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 11 [2024-11-24 01:33:00,400 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2024-11-24 01:33:00,611 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-24 01:33:00,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1631057529] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:33:00,611 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:33:00,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 19, 19] total 45 [2024-11-24 01:33:00,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437401532] [2024-11-24 01:33:00,611 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:33:00,611 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-11-24 01:33:00,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:33:00,612 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-11-24 01:33:00,613 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=1853, Unknown=0, NotChecked=0, Total=1980 [2024-11-24 01:33:00,613 INFO L87 Difference]: Start difference. First operand 198 states and 225 transitions. Second operand has 45 states, 45 states have (on average 1.9777777777777779) internal successors, (89), 45 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:33:03,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:33:03,123 INFO L93 Difference]: Finished difference Result 409 states and 458 transitions. [2024-11-24 01:33:03,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-11-24 01:33:03,123 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 1.9777777777777779) internal successors, (89), 45 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2024-11-24 01:33:03,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:33:03,125 INFO L225 Difference]: With dead ends: 409 [2024-11-24 01:33:03,125 INFO L226 Difference]: Without dead ends: 393 [2024-11-24 01:33:03,126 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1302 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=403, Invalid=5917, Unknown=0, NotChecked=0, Total=6320 [2024-11-24 01:33:03,127 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 166 mSDsluCounter, 747 mSDsCounter, 0 mSdLazyCounter, 1412 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 773 SdHoareTripleChecker+Invalid, 1420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-24 01:33:03,127 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 773 Invalid, 1420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1412 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-24 01:33:03,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2024-11-24 01:33:03,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 323. [2024-11-24 01:33:03,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 321 states have (on average 1.161993769470405) internal successors, (373), 322 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:33:03,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 373 transitions. [2024-11-24 01:33:03,140 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 373 transitions. Word has length 36 [2024-11-24 01:33:03,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:33:03,141 INFO L471 AbstractCegarLoop]: Abstraction has 323 states and 373 transitions. [2024-11-24 01:33:03,141 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 1.9777777777777779) internal successors, (89), 45 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:33:03,141 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 373 transitions. [2024-11-24 01:33:03,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-24 01:33:03,141 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:33:03,141 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:33:03,155 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-24 01:33:03,342 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-24 01:33:03,342 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-24 01:33:03,342 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:33:03,342 INFO L85 PathProgramCache]: Analyzing trace with hash -325077569, now seen corresponding path program 3 times [2024-11-24 01:33:03,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:33:03,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106726276] [2024-11-24 01:33:03,343 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-24 01:33:03,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:33:03,384 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-24 01:33:03,384 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:33:03,840 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 6 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:33:03,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:33:03,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106726276] [2024-11-24 01:33:03,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106726276] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:33:03,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1749843150] [2024-11-24 01:33:03,841 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-24 01:33:03,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:33:03,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:33:03,843 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:33:03,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-24 01:33:03,945 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-24 01:33:03,945 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:33:03,947 INFO L256 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 73 conjuncts are in the unsatisfiable core [2024-11-24 01:33:03,950 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:33:04,213 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 [2024-11-24 01:33:04,255 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-24 01:33:04,411 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-24 01:33:04,413 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-24 01:33:04,414 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 15 treesize of output 10 [2024-11-24 01:33:04,704 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 8 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:33:04,704 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:33:05,201 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 17 [2024-11-24 01:33:05,205 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 28 treesize of output 24 [2024-11-24 01:33:05,300 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 11 [2024-11-24 01:33:05,305 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 [2024-11-24 01:33:05,840 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 8 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:33:05,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1749843150] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:33:05,840 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:33:05,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 20, 20] total 53 [2024-11-24 01:33:05,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212897274] [2024-11-24 01:33:05,840 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:33:05,841 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-11-24 01:33:05,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:33:05,841 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-11-24 01:33:05,842 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=2593, Unknown=0, NotChecked=0, Total=2756 [2024-11-24 01:33:05,842 INFO L87 Difference]: Start difference. First operand 323 states and 373 transitions. Second operand has 53 states, 53 states have (on average 2.056603773584906) internal successors, (109), 53 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:33:07,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:33:07,712 INFO L93 Difference]: Finished difference Result 513 states and 574 transitions. [2024-11-24 01:33:07,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-11-24 01:33:07,712 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.056603773584906) internal successors, (109), 53 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2024-11-24 01:33:07,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:33:07,714 INFO L225 Difference]: With dead ends: 513 [2024-11-24 01:33:07,714 INFO L226 Difference]: Without dead ends: 442 [2024-11-24 01:33:07,715 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1784 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=414, Invalid=6896, Unknown=0, NotChecked=0, Total=7310 [2024-11-24 01:33:07,716 INFO L435 NwaCegarLoop]: 29 mSDtfsCounter, 110 mSDsluCounter, 884 mSDsCounter, 0 mSdLazyCounter, 1260 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 913 SdHoareTripleChecker+Invalid, 1265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-24 01:33:07,716 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 913 Invalid, 1265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1260 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-24 01:33:07,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2024-11-24 01:33:07,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 395. [2024-11-24 01:33:07,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 393 states have (on average 1.1526717557251909) internal successors, (453), 394 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:33:07,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 453 transitions. [2024-11-24 01:33:07,727 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 453 transitions. Word has length 40 [2024-11-24 01:33:07,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:33:07,728 INFO L471 AbstractCegarLoop]: Abstraction has 395 states and 453 transitions. [2024-11-24 01:33:07,728 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 2.056603773584906) internal successors, (109), 53 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:33:07,728 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 453 transitions. [2024-11-24 01:33:07,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-24 01:33:07,729 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:33:07,729 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:33:07,738 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-24 01:33:07,929 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:33:07,929 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-24 01:33:07,930 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:33:07,930 INFO L85 PathProgramCache]: Analyzing trace with hash -929561544, now seen corresponding path program 4 times [2024-11-24 01:33:07,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:33:07,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67168940] [2024-11-24 01:33:07,930 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-24 01:33:07,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:33:07,948 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-24 01:33:07,949 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:33:08,241 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 1 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:33:08,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:33:08,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67168940] [2024-11-24 01:33:08,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67168940] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:33:08,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2058713341] [2024-11-24 01:33:08,242 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-24 01:33:08,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:33:08,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:33:08,244 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:33:08,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-24 01:33:08,354 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-24 01:33:08,355 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:33:08,360 INFO L256 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-24 01:33:08,362 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:33:08,525 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:33:08,526 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:33:08,775 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-24 01:33:08,815 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:33:08,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2058713341] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:33:08,815 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:33:08,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 23 [2024-11-24 01:33:08,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963809728] [2024-11-24 01:33:08,815 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:33:08,816 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-24 01:33:08,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:33:08,816 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-24 01:33:08,816 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=489, Unknown=0, NotChecked=0, Total=552 [2024-11-24 01:33:08,817 INFO L87 Difference]: Start difference. First operand 395 states and 453 transitions. Second operand has 24 states, 23 states have (on average 3.1739130434782608) internal successors, (73), 24 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:33:09,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:33:09,307 INFO L93 Difference]: Finished difference Result 475 states and 536 transitions. [2024-11-24 01:33:09,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-24 01:33:09,307 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 3.1739130434782608) internal successors, (73), 24 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2024-11-24 01:33:09,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:33:09,309 INFO L225 Difference]: With dead ends: 475 [2024-11-24 01:33:09,309 INFO L226 Difference]: Without dead ends: 475 [2024-11-24 01:33:09,310 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 73 SyntacticMatches, 4 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=127, Invalid=929, Unknown=0, NotChecked=0, Total=1056 [2024-11-24 01:33:09,310 INFO L435 NwaCegarLoop]: 49 mSDtfsCounter, 71 mSDsluCounter, 533 mSDsCounter, 0 mSdLazyCounter, 634 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 582 SdHoareTripleChecker+Invalid, 634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-24 01:33:09,310 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 582 Invalid, 634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 634 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-24 01:33:09,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2024-11-24 01:33:09,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 302. [2024-11-24 01:33:09,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 300 states have (on average 1.1433333333333333) internal successors, (343), 301 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:33:09,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 343 transitions. [2024-11-24 01:33:09,320 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 343 transitions. Word has length 44 [2024-11-24 01:33:09,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:33:09,321 INFO L471 AbstractCegarLoop]: Abstraction has 302 states and 343 transitions. [2024-11-24 01:33:09,321 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 3.1739130434782608) internal successors, (73), 24 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:33:09,321 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 343 transitions. [2024-11-24 01:33:09,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-24 01:33:09,323 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:33:09,324 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:33:09,332 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-24 01:33:09,527 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-24 01:33:09,528 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-24 01:33:09,528 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:33:09,528 INFO L85 PathProgramCache]: Analyzing trace with hash -377820715, now seen corresponding path program 1 times [2024-11-24 01:33:09,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:33:09,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155541438] [2024-11-24 01:33:09,528 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:33:09,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:33:09,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:33:10,143 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-24 01:33:10,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:33:10,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155541438] [2024-11-24 01:33:10,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155541438] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:33:10,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [372936660] [2024-11-24 01:33:10,144 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:33:10,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:33:10,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:33:10,149 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:33:10,153 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-24 01:33:10,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:33:10,262 INFO L256 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-24 01:33:10,265 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:33:10,379 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-24 01:33:10,573 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 24 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-24 01:33:10,573 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:33:10,603 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-24 01:33:10,606 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-24 01:33:10,691 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 24 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-24 01:33:10,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [372936660] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:33:10,691 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:33:10,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13, 13] total 30 [2024-11-24 01:33:10,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389736875] [2024-11-24 01:33:10,691 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:33:10,692 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-24 01:33:10,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:33:10,692 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-24 01:33:10,693 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=794, Unknown=0, NotChecked=0, Total=870 [2024-11-24 01:33:10,693 INFO L87 Difference]: Start difference. First operand 302 states and 343 transitions. Second operand has 30 states, 30 states have (on average 2.8333333333333335) internal successors, (85), 30 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:33:11,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:33:11,495 INFO L93 Difference]: Finished difference Result 390 states and 434 transitions. [2024-11-24 01:33:11,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-24 01:33:11,496 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.8333333333333335) internal successors, (85), 30 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2024-11-24 01:33:11,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:33:11,497 INFO L225 Difference]: With dead ends: 390 [2024-11-24 01:33:11,498 INFO L226 Difference]: Without dead ends: 357 [2024-11-24 01:33:11,499 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 347 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=170, Invalid=1636, Unknown=0, NotChecked=0, Total=1806 [2024-11-24 01:33:11,502 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 63 mSDsluCounter, 559 mSDsCounter, 0 mSdLazyCounter, 720 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 592 SdHoareTripleChecker+Invalid, 721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 720 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-24 01:33:11,503 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 592 Invalid, 721 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 720 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-24 01:33:11,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2024-11-24 01:33:11,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 347. [2024-11-24 01:33:11,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 345 states have (on average 1.1333333333333333) internal successors, (391), 346 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:33:11,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 391 transitions. [2024-11-24 01:33:11,518 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 391 transitions. Word has length 45 [2024-11-24 01:33:11,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:33:11,518 INFO L471 AbstractCegarLoop]: Abstraction has 347 states and 391 transitions. [2024-11-24 01:33:11,518 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.8333333333333335) internal successors, (85), 30 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:33:11,518 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 391 transitions. [2024-11-24 01:33:11,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-24 01:33:11,519 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:33:11,519 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:33:11,529 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-24 01:33:11,720 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:33:11,720 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-24 01:33:11,720 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:33:11,720 INFO L85 PathProgramCache]: Analyzing trace with hash 409829015, now seen corresponding path program 3 times [2024-11-24 01:33:11,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:33:11,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174757877] [2024-11-24 01:33:11,720 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-24 01:33:11,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:33:11,745 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-24 01:33:11,746 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:33:12,209 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:33:12,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:33:12,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174757877] [2024-11-24 01:33:12,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174757877] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:33:12,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [110109656] [2024-11-24 01:33:12,209 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-24 01:33:12,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:33:12,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:33:12,212 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:33:12,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-24 01:33:12,329 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-24 01:33:12,329 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:33:12,331 INFO L256 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-24 01:33:12,333 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:33:12,470 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-24 01:33:12,557 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:33:12,557 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:33:12,606 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-24 01:33:12,608 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-24 01:33:12,682 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:33:12,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [110109656] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:33:12,682 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:33:12,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15, 15] total 26 [2024-11-24 01:33:12,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610422543] [2024-11-24 01:33:12,682 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:33:12,682 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-24 01:33:12,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:33:12,683 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-24 01:33:12,683 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=578, Unknown=0, NotChecked=0, Total=650 [2024-11-24 01:33:12,683 INFO L87 Difference]: Start difference. First operand 347 states and 391 transitions. Second operand has 26 states, 26 states have (on average 2.730769230769231) internal successors, (71), 26 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) [2024-11-24 01:33:12,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:33:12,925 INFO L93 Difference]: Finished difference Result 588 states and 649 transitions. [2024-11-24 01:33:12,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-24 01:33:12,929 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.730769230769231) internal successors, (71), 26 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 46 [2024-11-24 01:33:12,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:33:12,930 INFO L225 Difference]: With dead ends: 588 [2024-11-24 01:33:12,930 INFO L226 Difference]: Without dead ends: 457 [2024-11-24 01:33:12,931 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=91, Invalid=721, Unknown=0, NotChecked=0, Total=812 [2024-11-24 01:33:12,931 INFO L435 NwaCegarLoop]: 45 mSDtfsCounter, 32 mSDsluCounter, 686 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 731 SdHoareTripleChecker+Invalid, 413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-24 01:33:12,931 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 731 Invalid, 413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 411 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 01:33:12,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2024-11-24 01:33:12,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 398. [2024-11-24 01:33:12,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 396 states have (on average 1.1338383838383839) internal successors, (449), 397 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:33:12,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 449 transitions. [2024-11-24 01:33:12,943 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 449 transitions. Word has length 46 [2024-11-24 01:33:12,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:33:12,943 INFO L471 AbstractCegarLoop]: Abstraction has 398 states and 449 transitions. [2024-11-24 01:33:12,943 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.730769230769231) internal successors, (71), 26 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) [2024-11-24 01:33:12,943 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 449 transitions. [2024-11-24 01:33:12,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-24 01:33:12,944 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:33:12,944 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:33:12,954 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-24 01:33:13,148 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2024-11-24 01:33:13,150 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-24 01:33:13,151 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:33:13,151 INFO L85 PathProgramCache]: Analyzing trace with hash 170401466, now seen corresponding path program 5 times [2024-11-24 01:33:13,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:33:13,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950900224] [2024-11-24 01:33:13,151 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-24 01:33:13,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:33:13,176 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-11-24 01:33:13,177 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:33:13,670 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 8 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:33:13,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:33:13,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950900224] [2024-11-24 01:33:13,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950900224] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:33:13,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1603469179] [2024-11-24 01:33:13,670 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-24 01:33:13,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:33:13,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:33:13,672 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:33:13,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-24 01:33:13,787 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-11-24 01:33:13,787 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:33:13,790 INFO L256 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 68 conjuncts are in the unsatisfiable core [2024-11-24 01:33:13,793 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:33:13,807 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 [2024-11-24 01:33:13,975 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2024-11-24 01:33:14,644 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-24 01:33:14,644 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 20 treesize of output 15 [2024-11-24 01:33:14,871 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 6 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:33:14,871 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:33:15,550 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-24 01:33:15,555 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-24 01:33:16,085 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 6 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:33:16,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1603469179] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:33:16,085 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:33:16,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 17] total 51 [2024-11-24 01:33:16,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468037133] [2024-11-24 01:33:16,086 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:33:16,086 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-11-24 01:33:16,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:33:16,087 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-11-24 01:33:16,087 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=2373, Unknown=0, NotChecked=0, Total=2550 [2024-11-24 01:33:16,088 INFO L87 Difference]: Start difference. First operand 398 states and 449 transitions. Second operand has 51 states, 51 states have (on average 2.7254901960784315) internal successors, (139), 51 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:33:24,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:33:24,364 INFO L93 Difference]: Finished difference Result 704 states and 777 transitions. [2024-11-24 01:33:24,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-24 01:33:24,365 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 2.7254901960784315) internal successors, (139), 51 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2024-11-24 01:33:24,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:33:24,367 INFO L225 Difference]: With dead ends: 704 [2024-11-24 01:33:24,367 INFO L226 Difference]: Without dead ends: 605 [2024-11-24 01:33:24,369 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1341 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=580, Invalid=6560, Unknown=0, NotChecked=0, Total=7140 [2024-11-24 01:33:24,369 INFO L435 NwaCegarLoop]: 36 mSDtfsCounter, 330 mSDsluCounter, 914 mSDsCounter, 0 mSdLazyCounter, 1386 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 950 SdHoareTripleChecker+Invalid, 1389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1386 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-24 01:33:24,370 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [330 Valid, 950 Invalid, 1389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1386 Invalid, 2 Unknown, 0 Unchecked, 1.9s Time] [2024-11-24 01:33:24,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2024-11-24 01:33:24,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 519. [2024-11-24 01:33:24,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 519 states, 517 states have (on average 1.1334622823984526) internal successors, (586), 518 states have internal predecessors, (586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:33:24,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 586 transitions. [2024-11-24 01:33:24,399 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 586 transitions. Word has length 49 [2024-11-24 01:33:24,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:33:24,399 INFO L471 AbstractCegarLoop]: Abstraction has 519 states and 586 transitions. [2024-11-24 01:33:24,400 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 2.7254901960784315) internal successors, (139), 51 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:33:24,400 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 586 transitions. [2024-11-24 01:33:24,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-24 01:33:24,401 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:33:24,401 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:33:24,410 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-24 01:33:24,604 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:33:24,604 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-24 01:33:24,605 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:33:24,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1766409616, now seen corresponding path program 4 times [2024-11-24 01:33:24,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:33:24,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764152060] [2024-11-24 01:33:24,605 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-24 01:33:24,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:33:24,628 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-24 01:33:24,629 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:33:25,833 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-24 01:33:25,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:33:25,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764152060] [2024-11-24 01:33:25,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764152060] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:33:25,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [543760801] [2024-11-24 01:33:25,833 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-24 01:33:25,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:33:25,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:33:25,837 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:33:25,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-24 01:33:25,951 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-24 01:33:25,952 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:33:25,956 INFO L256 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 68 conjuncts are in the unsatisfiable core [2024-11-24 01:33:25,958 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:33:26,119 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 14 treesize of output 10 [2024-11-24 01:33:28,228 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-24 01:33:28,228 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 77 treesize of output 122 [2024-11-24 01:33:28,680 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 21 proven. 18 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-24 01:33:28,680 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:33:30,064 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 38 [2024-11-24 01:33:30,076 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 58 [2024-11-24 01:33:30,084 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-24 01:33:30,334 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-24 01:33:30,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [543760801] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:33:30,334 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:33:30,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 22, 23] total 59 [2024-11-24 01:33:30,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652823804] [2024-11-24 01:33:30,335 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:33:30,335 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-11-24 01:33:30,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:33:30,336 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-11-24 01:33:30,336 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=318, Invalid=3222, Unknown=0, NotChecked=0, Total=3540 [2024-11-24 01:33:30,336 INFO L87 Difference]: Start difference. First operand 519 states and 586 transitions. Second operand has 60 states, 59 states have (on average 1.847457627118644) internal successors, (109), 60 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:33:31,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:33:31,802 INFO L93 Difference]: Finished difference Result 610 states and 679 transitions. [2024-11-24 01:33:31,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-24 01:33:31,803 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 59 states have (on average 1.847457627118644) internal successors, (109), 60 states have internal predecessors, (109), 0 states have call successors, (0), 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 50 [2024-11-24 01:33:31,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:33:31,804 INFO L225 Difference]: With dead ends: 610 [2024-11-24 01:33:31,805 INFO L226 Difference]: Without dead ends: 384 [2024-11-24 01:33:31,806 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 59 SyntacticMatches, 2 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1192 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=509, Invalid=4183, Unknown=0, NotChecked=0, Total=4692 [2024-11-24 01:33:31,806 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 33 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 964 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 506 SdHoareTripleChecker+Invalid, 967 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 964 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-24 01:33:31,806 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 506 Invalid, 967 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 964 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-24 01:33:31,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2024-11-24 01:33:31,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 230. [2024-11-24 01:33:31,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 229 states have (on average 1.1222707423580787) internal successors, (257), 229 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:33:31,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 257 transitions. [2024-11-24 01:33:31,813 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 257 transitions. Word has length 50 [2024-11-24 01:33:31,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:33:31,813 INFO L471 AbstractCegarLoop]: Abstraction has 230 states and 257 transitions. [2024-11-24 01:33:31,813 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 59 states have (on average 1.847457627118644) internal successors, (109), 60 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:33:31,813 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 257 transitions. [2024-11-24 01:33:31,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-24 01:33:31,814 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:33:31,814 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:33:31,826 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-24 01:33:32,018 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:33:32,019 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-24 01:33:32,019 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:33:32,019 INFO L85 PathProgramCache]: Analyzing trace with hash 1534807089, now seen corresponding path program 6 times [2024-11-24 01:33:32,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:33:32,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595960696] [2024-11-24 01:33:32,019 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-24 01:33:32,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:33:32,050 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2024-11-24 01:33:32,050 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:33:33,044 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 14 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:33:33,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:33:33,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595960696] [2024-11-24 01:33:33,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595960696] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:33:33,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1195204129] [2024-11-24 01:33:33,045 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-24 01:33:33,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:33:33,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:33:33,047 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:33:33,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-24 01:33:33,193 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2024-11-24 01:33:33,194 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:33:33,196 INFO L256 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 70 conjuncts are in the unsatisfiable core [2024-11-24 01:33:33,198 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:33:33,434 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-24 01:33:33,800 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 10 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:33:33,800 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:33:33,869 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-24 01:33:33,871 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-24 01:33:33,982 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 10 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:33:33,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1195204129] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:33:33,982 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:33:33,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 19, 19] total 45 [2024-11-24 01:33:33,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488712301] [2024-11-24 01:33:33,982 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:33:33,982 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-11-24 01:33:33,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:33:33,983 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-11-24 01:33:33,983 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=1852, Unknown=0, NotChecked=0, Total=1980 [2024-11-24 01:33:33,984 INFO L87 Difference]: Start difference. First operand 230 states and 257 transitions. Second operand has 45 states, 45 states have (on average 2.6) internal successors, (117), 45 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:33:35,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:33:35,502 INFO L93 Difference]: Finished difference Result 480 states and 523 transitions. [2024-11-24 01:33:35,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2024-11-24 01:33:35,506 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.6) internal successors, (117), 45 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2024-11-24 01:33:35,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:33:35,507 INFO L225 Difference]: With dead ends: 480 [2024-11-24 01:33:35,507 INFO L226 Difference]: Without dead ends: 285 [2024-11-24 01:33:35,508 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1140 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=300, Invalid=5250, Unknown=0, NotChecked=0, Total=5550 [2024-11-24 01:33:35,508 INFO L435 NwaCegarLoop]: 36 mSDtfsCounter, 111 mSDsluCounter, 1056 mSDsCounter, 0 mSdLazyCounter, 1506 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 1092 SdHoareTripleChecker+Invalid, 1514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-24 01:33:35,509 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 1092 Invalid, 1514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1506 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-24 01:33:35,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2024-11-24 01:33:35,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 246. [2024-11-24 01:33:35,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 245 states have (on average 1.1142857142857143) internal successors, (273), 245 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:33:35,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 273 transitions. [2024-11-24 01:33:35,513 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 273 transitions. Word has length 58 [2024-11-24 01:33:35,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:33:35,513 INFO L471 AbstractCegarLoop]: Abstraction has 246 states and 273 transitions. [2024-11-24 01:33:35,514 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 2.6) internal successors, (117), 45 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:33:35,514 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 273 transitions. [2024-11-24 01:33:35,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-24 01:33:35,514 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:33:35,514 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:33:35,524 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-24 01:33:35,715 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:33:35,715 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-24 01:33:35,715 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:33:35,715 INFO L85 PathProgramCache]: Analyzing trace with hash 1220824682, now seen corresponding path program 7 times [2024-11-24 01:33:35,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:33:35,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376804856] [2024-11-24 01:33:35,716 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-24 01:33:35,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:33:35,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:33:36,275 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 15 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:33:36,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:33:36,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376804856] [2024-11-24 01:33:36,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376804856] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:33:36,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1544549050] [2024-11-24 01:33:36,276 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-24 01:33:36,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:33:36,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:33:36,278 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:33:36,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-24 01:33:36,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:33:36,408 INFO L256 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 63 conjuncts are in the unsatisfiable core [2024-11-24 01:33:36,410 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:33:36,788 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 28 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:33:36,788 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:33:37,211 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-24 01:33:37,345 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 28 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:33:37,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1544549050] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:33:37,345 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:33:37,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 17] total 38 [2024-11-24 01:33:37,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243432386] [2024-11-24 01:33:37,345 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:33:37,345 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-24 01:33:37,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:33:37,346 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-24 01:33:37,346 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=1326, Unknown=0, NotChecked=0, Total=1482 [2024-11-24 01:33:37,346 INFO L87 Difference]: Start difference. First operand 246 states and 273 transitions. Second operand has 39 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 39 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:33:38,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:33:38,095 INFO L93 Difference]: Finished difference Result 311 states and 341 transitions. [2024-11-24 01:33:38,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-24 01:33:38,096 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 39 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2024-11-24 01:33:38,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:33:38,097 INFO L225 Difference]: With dead ends: 311 [2024-11-24 01:33:38,097 INFO L226 Difference]: Without dead ends: 311 [2024-11-24 01:33:38,098 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 97 SyntacticMatches, 6 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 845 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=295, Invalid=2357, Unknown=0, NotChecked=0, Total=2652 [2024-11-24 01:33:38,098 INFO L435 NwaCegarLoop]: 45 mSDtfsCounter, 160 mSDsluCounter, 776 mSDsCounter, 0 mSdLazyCounter, 944 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 821 SdHoareTripleChecker+Invalid, 944 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 944 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-24 01:33:38,098 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 821 Invalid, 944 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 944 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-24 01:33:38,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2024-11-24 01:33:38,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 266. [2024-11-24 01:33:38,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 265 states have (on average 1.1169811320754717) internal successors, (296), 265 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:33:38,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 296 transitions. [2024-11-24 01:33:38,104 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 296 transitions. Word has length 62 [2024-11-24 01:33:38,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:33:38,104 INFO L471 AbstractCegarLoop]: Abstraction has 266 states and 296 transitions. [2024-11-24 01:33:38,105 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 39 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:33:38,105 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 296 transitions. [2024-11-24 01:33:38,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-24 01:33:38,106 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:33:38,106 INFO L218 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:33:38,115 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-24 01:33:38,309 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-11-24 01:33:38,309 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-24 01:33:38,310 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:33:38,310 INFO L85 PathProgramCache]: Analyzing trace with hash 1634493384, now seen corresponding path program 8 times [2024-11-24 01:33:38,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:33:38,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791251091] [2024-11-24 01:33:38,311 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 01:33:38,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:33:38,347 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 01:33:38,348 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:33:39,021 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 12 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:33:39,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:33:39,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791251091] [2024-11-24 01:33:39,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791251091] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:33:39,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1367151239] [2024-11-24 01:33:39,022 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 01:33:39,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:33:39,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:33:39,024 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:33:39,025 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-24 01:33:39,150 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 01:33:39,150 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:33:39,152 INFO L256 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 103 conjuncts are in the unsatisfiable core [2024-11-24 01:33:39,155 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:33:39,475 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 [2024-11-24 01:33:39,515 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2024-11-24 01:33:39,754 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-24 01:33:39,757 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-24 01:33:39,757 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 15 treesize of output 10 [2024-11-24 01:33:40,777 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-24 01:33:40,777 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 20 treesize of output 17 [2024-11-24 01:33:41,090 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 28 proven. 104 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:33:41,090 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:33:42,697 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-24 01:33:42,708 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 [2024-11-24 01:33:42,717 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2024-11-24 01:33:43,152 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 28 proven. 104 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:33:43,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1367151239] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:33:43,152 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:33:43,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 26, 23] total 70 [2024-11-24 01:33:43,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236663041] [2024-11-24 01:33:43,152 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:33:43,153 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2024-11-24 01:33:43,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:33:43,154 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2024-11-24 01:33:43,154 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=297, Invalid=4533, Unknown=0, NotChecked=0, Total=4830 [2024-11-24 01:33:43,154 INFO L87 Difference]: Start difference. First operand 266 states and 296 transitions. Second operand has 70 states, 70 states have (on average 2.7857142857142856) internal successors, (195), 70 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:33:51,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:33:51,533 INFO L93 Difference]: Finished difference Result 663 states and 715 transitions. [2024-11-24 01:33:51,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2024-11-24 01:33:51,534 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 2.7857142857142856) internal successors, (195), 70 states have internal predecessors, (195), 0 states have call successors, (0), 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 67 [2024-11-24 01:33:51,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:33:51,535 INFO L225 Difference]: With dead ends: 663 [2024-11-24 01:33:51,535 INFO L226 Difference]: Without dead ends: 433 [2024-11-24 01:33:51,537 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4952 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=1330, Invalid=19549, Unknown=1, NotChecked=0, Total=20880 [2024-11-24 01:33:51,537 INFO L435 NwaCegarLoop]: 46 mSDtfsCounter, 305 mSDsluCounter, 1338 mSDsCounter, 0 mSdLazyCounter, 2007 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 1384 SdHoareTripleChecker+Invalid, 2017 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 2007 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-24 01:33:51,538 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [305 Valid, 1384 Invalid, 2017 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 2007 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-24 01:33:51,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2024-11-24 01:33:51,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 302. [2024-11-24 01:33:51,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 301 states have (on average 1.1129568106312293) internal successors, (335), 301 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:33:51,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 335 transitions. [2024-11-24 01:33:51,557 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 335 transitions. Word has length 67 [2024-11-24 01:33:51,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:33:51,557 INFO L471 AbstractCegarLoop]: Abstraction has 302 states and 335 transitions. [2024-11-24 01:33:51,558 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 2.7857142857142856) internal successors, (195), 70 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:33:51,558 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 335 transitions. [2024-11-24 01:33:51,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-24 01:33:51,559 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:33:51,559 INFO L218 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:33:51,571 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-24 01:33:51,762 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-11-24 01:33:51,763 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-24 01:33:51,764 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:33:51,766 INFO L85 PathProgramCache]: Analyzing trace with hash 438903715, now seen corresponding path program 9 times [2024-11-24 01:33:51,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:33:51,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008246072] [2024-11-24 01:33:51,766 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-24 01:33:51,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:33:51,804 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2024-11-24 01:33:51,805 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:33:52,744 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 14 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:33:52,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:33:52,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008246072] [2024-11-24 01:33:52,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008246072] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:33:52,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1443213232] [2024-11-24 01:33:52,744 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-24 01:33:52,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:33:52,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:33:52,747 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:33:52,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-24 01:33:52,992 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2024-11-24 01:33:52,992 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:33:52,995 INFO L256 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 105 conjuncts are in the unsatisfiable core [2024-11-24 01:33:52,999 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:33:53,412 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 [2024-11-24 01:33:53,465 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2024-11-24 01:33:55,197 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-24 01:33:55,198 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 20 treesize of output 17 [2024-11-24 01:33:55,493 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 45 proven. 140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:33:55,493 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:33:57,850 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 17 [2024-11-24 01:33:57,856 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 32 treesize of output 28 [2024-11-24 01:33:57,860 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 13 treesize of output 9 [2024-11-24 01:33:57,947 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 11 [2024-11-24 01:33:57,949 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2024-11-24 01:33:58,554 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 45 proven. 140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:33:58,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1443213232] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:33:58,554 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:33:58,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 27, 26] total 76 [2024-11-24 01:33:58,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213065704] [2024-11-24 01:33:58,554 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:33:58,555 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2024-11-24 01:33:58,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:33:58,556 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2024-11-24 01:33:58,567 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=320, Invalid=5379, Unknown=1, NotChecked=0, Total=5700 [2024-11-24 01:33:58,568 INFO L87 Difference]: Start difference. First operand 302 states and 335 transitions. Second operand has 76 states, 76 states have (on average 2.9210526315789473) internal successors, (222), 76 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:34:03,411 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#length| |c_ULTIMATE.start_cstrcspn_~spanp~0#1.base|))) (and (forall ((|v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_131| Int)) (or (< |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_131| 1) (< |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_131| .cse0) (= (select (select |c_#memory_int#1| |c_ULTIMATE.start_cstrcspn_~spanp~0#1.base|) (+ (- 1) |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_131|)) |c_ULTIMATE.start_cstrcspn_~c~0#1|) (< (+ |c_ULTIMATE.start_cstrcspn_~spanp~0#1.offset| 6) |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_131|))) (<= 0 |c_ULTIMATE.start_cstrcspn_~spanp~0#1.offset|) (<= (+ |c_ULTIMATE.start_cstrcspn_~spanp~0#1.offset| 1) .cse0))) is different from false [2024-11-24 01:34:06,032 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#length| |c_ULTIMATE.start_cstrcspn_~spanp~0#1.base|))) (and (forall ((|v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_131| Int)) (or (< |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_131| 1) (< (+ |c_ULTIMATE.start_cstrcspn_~spanp~0#1.offset| 5) |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_131|) (< |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_131| .cse0) (= (select (select |c_#memory_int#1| |c_ULTIMATE.start_cstrcspn_~spanp~0#1.base|) (+ (- 1) |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_131|)) |c_ULTIMATE.start_cstrcspn_~c~0#1|))) (or (and (<= 0 |c_ULTIMATE.start_cstrcspn_~spanp~0#1.offset|) (<= (+ |c_ULTIMATE.start_cstrcspn_~spanp~0#1.offset| 1) .cse0)) (= |c_ULTIMATE.start_cstrcspn_#t~mem5#1| |c_ULTIMATE.start_cstrcspn_~c~0#1|)))) is different from false [2024-11-24 01:34:08,689 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.60s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:34:09,144 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#length| |c_ULTIMATE.start_cstrcspn_~spanp~0#1.base|))) (and (forall ((|v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_131| Int)) (or (< |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_131| 1) (< (+ |c_ULTIMATE.start_cstrcspn_~spanp~0#1.offset| 5) |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_131|) (< |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_131| .cse0) (= (select (select |c_#memory_int#1| |c_ULTIMATE.start_cstrcspn_~spanp~0#1.base|) (+ (- 1) |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_131|)) |c_ULTIMATE.start_cstrcspn_~c~0#1|))) (or (= |c_ULTIMATE.start_cstrcspn_~sc~0#1| |c_ULTIMATE.start_cstrcspn_~c~0#1|) (and (<= 0 |c_ULTIMATE.start_cstrcspn_~spanp~0#1.offset|) (<= (+ |c_ULTIMATE.start_cstrcspn_~spanp~0#1.offset| 1) .cse0))))) is different from false [2024-11-24 01:34:09,433 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#length| |c_ULTIMATE.start_cstrcspn_~spanp~0#1.base|))) (and (<= 0 |c_ULTIMATE.start_cstrcspn_~spanp~0#1.offset|) (forall ((|v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_131| Int)) (or (< |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_131| 1) (< (+ |c_ULTIMATE.start_cstrcspn_~spanp~0#1.offset| 5) |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_131|) (< |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_131| .cse0) (= (select (select |c_#memory_int#1| |c_ULTIMATE.start_cstrcspn_~spanp~0#1.base|) (+ (- 1) |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_131|)) |c_ULTIMATE.start_cstrcspn_~c~0#1|))) (<= (+ |c_ULTIMATE.start_cstrcspn_~spanp~0#1.offset| 1) .cse0))) is different from false [2024-11-24 01:35:01,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:35:01,559 INFO L93 Difference]: Finished difference Result 840 states and 910 transitions. [2024-11-24 01:35:01,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2024-11-24 01:35:01,560 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 2.9210526315789473) internal successors, (222), 76 states have internal predecessors, (222), 0 states have call successors, (0), 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 76 [2024-11-24 01:35:01,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:35:01,561 INFO L225 Difference]: With dead ends: 840 [2024-11-24 01:35:01,561 INFO L226 Difference]: Without dead ends: 577 [2024-11-24 01:35:01,564 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 174 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 6755 ImplicationChecksByTransitivity, 62.7s TimeCoverageRelationStatistics Valid=1797, Invalid=27624, Unknown=7, NotChecked=1372, Total=30800 [2024-11-24 01:35:01,565 INFO L435 NwaCegarLoop]: 51 mSDtfsCounter, 373 mSDsluCounter, 1973 mSDsCounter, 0 mSdLazyCounter, 3044 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 373 SdHoareTripleChecker+Valid, 2024 SdHoareTripleChecker+Invalid, 3654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 3044 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 562 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2024-11-24 01:35:01,565 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [373 Valid, 2024 Invalid, 3654 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 3044 Invalid, 0 Unknown, 562 Unchecked, 4.8s Time] [2024-11-24 01:35:01,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2024-11-24 01:35:01,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 347. [2024-11-24 01:35:01,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 346 states have (on average 1.106936416184971) internal successors, (383), 346 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:35:01,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 383 transitions. [2024-11-24 01:35:01,575 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 383 transitions. Word has length 76 [2024-11-24 01:35:01,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:35:01,576 INFO L471 AbstractCegarLoop]: Abstraction has 347 states and 383 transitions. [2024-11-24 01:35:01,576 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 76 states have (on average 2.9210526315789473) internal successors, (222), 76 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:35:01,576 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 383 transitions. [2024-11-24 01:35:01,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-24 01:35:01,578 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:35:01,578 INFO L218 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:35:01,589 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-24 01:35:01,778 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-11-24 01:35:01,779 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-24 01:35:01,783 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:35:01,783 INFO L85 PathProgramCache]: Analyzing trace with hash -132745258, now seen corresponding path program 10 times [2024-11-24 01:35:01,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:35:01,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536981607] [2024-11-24 01:35:01,784 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-24 01:35:01,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:35:01,837 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-24 01:35:01,837 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:35:02,726 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 16 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:35:02,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:35:02,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536981607] [2024-11-24 01:35:02,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536981607] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:35:02,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1478648720] [2024-11-24 01:35:02,727 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-24 01:35:02,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:35:02,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:35:02,729 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:35:02,732 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-24 01:35:02,871 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-24 01:35:02,871 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:35:02,874 INFO L256 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 98 conjuncts are in the unsatisfiable core [2024-11-24 01:35:02,875 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:35:02,952 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-24 01:35:03,045 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 16 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:35:03,046 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:35:03,147 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-24 01:35:03,149 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-24 01:35:03,280 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 16 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:35:03,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1478648720] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:35:03,280 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:35:03,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 28 [2024-11-24 01:35:03,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129093377] [2024-11-24 01:35:03,281 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:35:03,281 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-24 01:35:03,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:35:03,282 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-24 01:35:03,282 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=691, Unknown=0, NotChecked=0, Total=756 [2024-11-24 01:35:03,282 INFO L87 Difference]: Start difference. First operand 347 states and 383 transitions. Second operand has 28 states, 28 states have (on average 3.357142857142857) internal successors, (94), 28 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) [2024-11-24 01:35:04,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:35:04,270 INFO L93 Difference]: Finished difference Result 747 states and 823 transitions. [2024-11-24 01:35:04,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-24 01:35:04,271 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.357142857142857) internal successors, (94), 28 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) Word has length 85 [2024-11-24 01:35:04,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:35:04,273 INFO L225 Difference]: With dead ends: 747 [2024-11-24 01:35:04,273 INFO L226 Difference]: Without dead ends: 700 [2024-11-24 01:35:04,273 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=133, Invalid=1847, Unknown=0, NotChecked=0, Total=1980 [2024-11-24 01:35:04,274 INFO L435 NwaCegarLoop]: 66 mSDtfsCounter, 90 mSDsluCounter, 1303 mSDsCounter, 0 mSdLazyCounter, 1265 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 1369 SdHoareTripleChecker+Invalid, 1272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-24 01:35:04,274 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 1369 Invalid, 1272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1265 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-24 01:35:04,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2024-11-24 01:35:04,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 624. [2024-11-24 01:35:04,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 624 states, 623 states have (on average 1.1235955056179776) internal successors, (700), 623 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:35:04,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 624 states to 624 states and 700 transitions. [2024-11-24 01:35:04,304 INFO L78 Accepts]: Start accepts. Automaton has 624 states and 700 transitions. Word has length 85 [2024-11-24 01:35:04,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:35:04,305 INFO L471 AbstractCegarLoop]: Abstraction has 624 states and 700 transitions. [2024-11-24 01:35:04,305 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.357142857142857) internal successors, (94), 28 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) [2024-11-24 01:35:04,305 INFO L276 IsEmpty]: Start isEmpty. Operand 624 states and 700 transitions. [2024-11-24 01:35:04,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-24 01:35:04,306 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:35:04,306 INFO L218 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:35:04,318 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-24 01:35:04,506 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-11-24 01:35:04,507 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-24 01:35:04,507 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:35:04,507 INFO L85 PathProgramCache]: Analyzing trace with hash 1170659837, now seen corresponding path program 11 times [2024-11-24 01:35:04,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:35:04,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898623984] [2024-11-24 01:35:04,507 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-24 01:35:04,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:35:04,539 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2024-11-24 01:35:04,539 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:35:05,526 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 94 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:35:05,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:35:05,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898623984] [2024-11-24 01:35:05,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898623984] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:35:05,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1437598041] [2024-11-24 01:35:05,527 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-24 01:35:05,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:35:05,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:35:05,529 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:35:05,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-24 01:35:05,716 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2024-11-24 01:35:05,716 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:35:05,719 INFO L256 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 96 conjuncts are in the unsatisfiable core [2024-11-24 01:35:05,722 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:35:05,731 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-11-24 01:35:06,463 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 91 proven. 185 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:35:06,464 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:35:07,852 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 91 proven. 185 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:35:07,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1437598041] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:35:07,853 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:35:07,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 23, 23] total 60 [2024-11-24 01:35:07,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872207834] [2024-11-24 01:35:07,853 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:35:07,853 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2024-11-24 01:35:07,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:35:07,854 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2024-11-24 01:35:07,855 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=472, Invalid=3188, Unknown=0, NotChecked=0, Total=3660 [2024-11-24 01:35:07,855 INFO L87 Difference]: Start difference. First operand 624 states and 700 transitions. Second operand has 61 states, 60 states have (on average 3.683333333333333) internal successors, (221), 61 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:35:09,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:35:09,490 INFO L93 Difference]: Finished difference Result 828 states and 920 transitions. [2024-11-24 01:35:09,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-24 01:35:09,490 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 60 states have (on average 3.683333333333333) internal successors, (221), 61 states have internal predecessors, (221), 0 states have call successors, (0), 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 89 [2024-11-24 01:35:09,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:35:09,492 INFO L225 Difference]: With dead ends: 828 [2024-11-24 01:35:09,492 INFO L226 Difference]: Without dead ends: 828 [2024-11-24 01:35:09,492 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1951 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=713, Invalid=5607, Unknown=0, NotChecked=0, Total=6320 [2024-11-24 01:35:09,493 INFO L435 NwaCegarLoop]: 65 mSDtfsCounter, 188 mSDsluCounter, 1198 mSDsCounter, 0 mSdLazyCounter, 1514 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 1263 SdHoareTripleChecker+Invalid, 1515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-24 01:35:09,493 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 1263 Invalid, 1515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1514 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-24 01:35:09,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 828 states. [2024-11-24 01:35:09,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 828 to 635. [2024-11-24 01:35:09,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 635 states, 634 states have (on average 1.1261829652996846) internal successors, (714), 634 states have internal predecessors, (714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:35:09,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 714 transitions. [2024-11-24 01:35:09,505 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 714 transitions. Word has length 89 [2024-11-24 01:35:09,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:35:09,506 INFO L471 AbstractCegarLoop]: Abstraction has 635 states and 714 transitions. [2024-11-24 01:35:09,506 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 60 states have (on average 3.683333333333333) internal successors, (221), 61 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:35:09,506 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 714 transitions. [2024-11-24 01:35:09,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-11-24 01:35:09,507 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:35:09,507 INFO L218 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 7, 7, 7, 7, 7, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:35:09,517 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-24 01:35:09,711 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-11-24 01:35:09,712 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-24 01:35:09,712 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:35:09,712 INFO L85 PathProgramCache]: Analyzing trace with hash 1508228576, now seen corresponding path program 1 times [2024-11-24 01:35:09,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:35:09,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446065515] [2024-11-24 01:35:09,712 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:35:09,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:35:09,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:35:09,935 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 67 proven. 5 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2024-11-24 01:35:09,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:35:09,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446065515] [2024-11-24 01:35:09,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446065515] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:35:09,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1081804773] [2024-11-24 01:35:09,936 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:35:09,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:35:09,936 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:35:09,940 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:35:09,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-24 01:35:10,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:35:10,100 INFO L256 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 81 conjuncts are in the unsatisfiable core [2024-11-24 01:35:10,103 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:35:10,894 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 66 proven. 181 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-24 01:35:10,894 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:35:11,706 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-24 01:35:11,876 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 66 proven. 181 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-24 01:35:11,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1081804773] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:35:11,876 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:35:11,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 21, 21] total 43 [2024-11-24 01:35:11,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768124207] [2024-11-24 01:35:11,876 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:35:11,877 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-24 01:35:11,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:35:11,877 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-24 01:35:11,877 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=1667, Unknown=0, NotChecked=0, Total=1806 [2024-11-24 01:35:11,877 INFO L87 Difference]: Start difference. First operand 635 states and 714 transitions. Second operand has 43 states, 43 states have (on average 3.953488372093023) internal successors, (170), 43 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:35:13,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:35:13,823 INFO L93 Difference]: Finished difference Result 791 states and 865 transitions. [2024-11-24 01:35:13,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-24 01:35:13,824 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 3.953488372093023) internal successors, (170), 43 states have internal predecessors, (170), 0 states have call successors, (0), 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 92 [2024-11-24 01:35:13,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:35:13,825 INFO L225 Difference]: With dead ends: 791 [2024-11-24 01:35:13,825 INFO L226 Difference]: Without dead ends: 428 [2024-11-24 01:35:13,825 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 151 SyntacticMatches, 8 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 649 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=399, Invalid=4023, Unknown=0, NotChecked=0, Total=4422 [2024-11-24 01:35:13,826 INFO L435 NwaCegarLoop]: 53 mSDtfsCounter, 98 mSDsluCounter, 1307 mSDsCounter, 0 mSdLazyCounter, 2040 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 1360 SdHoareTripleChecker+Invalid, 2040 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2040 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:35:13,826 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 1360 Invalid, 2040 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2040 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-24 01:35:13,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2024-11-24 01:35:13,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 374. [2024-11-24 01:35:13,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 373 states have (on average 1.0991957104557641) internal successors, (410), 373 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:35:13,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 410 transitions. [2024-11-24 01:35:13,834 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 410 transitions. Word has length 92 [2024-11-24 01:35:13,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:35:13,834 INFO L471 AbstractCegarLoop]: Abstraction has 374 states and 410 transitions. [2024-11-24 01:35:13,834 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 3.953488372093023) internal successors, (170), 43 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:35:13,834 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 410 transitions. [2024-11-24 01:35:13,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-24 01:35:13,835 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:35:13,835 INFO L218 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:35:13,843 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-24 01:35:14,036 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-11-24 01:35:14,036 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-24 01:35:14,036 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:35:14,036 INFO L85 PathProgramCache]: Analyzing trace with hash 1646337045, now seen corresponding path program 12 times [2024-11-24 01:35:14,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:35:14,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392889404] [2024-11-24 01:35:14,036 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-24 01:35:14,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:35:14,079 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2024-11-24 01:35:14,079 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:35:15,530 INFO L134 CoverageAnalysis]: Checked inductivity of 318 backedges. 26 proven. 292 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:35:15,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:35:15,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392889404] [2024-11-24 01:35:15,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392889404] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:35:15,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [879932525] [2024-11-24 01:35:15,530 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-24 01:35:15,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:35:15,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:35:15,532 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:35:15,533 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-24 01:35:15,837 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2024-11-24 01:35:15,837 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:35:15,840 INFO L256 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 110 conjuncts are in the unsatisfiable core [2024-11-24 01:35:15,843 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:35:16,253 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-24 01:35:16,990 INFO L134 CoverageAnalysis]: Checked inductivity of 318 backedges. 18 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:35:16,990 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:35:17,074 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-24 01:35:17,076 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-24 01:35:17,254 INFO L134 CoverageAnalysis]: Checked inductivity of 318 backedges. 18 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:35:17,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [879932525] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:35:17,254 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:35:17,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 27, 27] total 61 [2024-11-24 01:35:17,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892330002] [2024-11-24 01:35:17,255 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:35:17,255 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2024-11-24 01:35:17,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:35:17,256 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2024-11-24 01:35:17,256 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=3488, Unknown=0, NotChecked=0, Total=3660 [2024-11-24 01:35:17,256 INFO L87 Difference]: Start difference. First operand 374 states and 410 transitions. Second operand has 61 states, 61 states have (on average 3.098360655737705) internal successors, (189), 61 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:35:20,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:35:20,708 INFO L93 Difference]: Finished difference Result 767 states and 828 transitions. [2024-11-24 01:35:20,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2024-11-24 01:35:20,708 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 3.098360655737705) internal successors, (189), 61 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2024-11-24 01:35:20,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:35:20,709 INFO L225 Difference]: With dead ends: 767 [2024-11-24 01:35:20,710 INFO L226 Difference]: Without dead ends: 445 [2024-11-24 01:35:20,710 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2446 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=436, Invalid=10906, Unknown=0, NotChecked=0, Total=11342 [2024-11-24 01:35:20,710 INFO L435 NwaCegarLoop]: 57 mSDtfsCounter, 185 mSDsluCounter, 2279 mSDsCounter, 0 mSdLazyCounter, 3290 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 2336 SdHoareTripleChecker+Invalid, 3306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 3290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-24 01:35:20,710 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 2336 Invalid, 3306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 3290 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-24 01:35:20,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2024-11-24 01:35:20,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 390. [2024-11-24 01:35:20,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 389 states have (on average 1.095115681233933) internal successors, (426), 389 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:35:20,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 426 transitions. [2024-11-24 01:35:20,716 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 426 transitions. Word has length 94 [2024-11-24 01:35:20,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:35:20,716 INFO L471 AbstractCegarLoop]: Abstraction has 390 states and 426 transitions. [2024-11-24 01:35:20,716 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 3.098360655737705) internal successors, (189), 61 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:35:20,717 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 426 transitions. [2024-11-24 01:35:20,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-24 01:35:20,718 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:35:20,718 INFO L218 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:35:20,728 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-24 01:35:20,918 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:35:20,918 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-24 01:35:20,919 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:35:20,919 INFO L85 PathProgramCache]: Analyzing trace with hash -823183922, now seen corresponding path program 13 times [2024-11-24 01:35:20,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:35:20,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374564005] [2024-11-24 01:35:20,919 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-24 01:35:20,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:35:20,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:35:22,014 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 91 proven. 260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:35:22,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:35:22,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374564005] [2024-11-24 01:35:22,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374564005] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:35:22,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [293790965] [2024-11-24 01:35:22,015 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-24 01:35:22,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:35:22,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:35:22,017 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:35:22,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-24 01:35:22,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:35:22,176 INFO L256 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 99 conjuncts are in the unsatisfiable core [2024-11-24 01:35:22,178 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:35:22,755 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 120 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:35:22,755 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:35:23,514 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-24 01:35:23,791 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 120 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:35:23,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [293790965] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:35:23,791 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:35:23,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25, 25] total 54 [2024-11-24 01:35:23,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451836410] [2024-11-24 01:35:23,792 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:35:23,792 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2024-11-24 01:35:23,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:35:23,793 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2024-11-24 01:35:23,793 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=307, Invalid=2663, Unknown=0, NotChecked=0, Total=2970 [2024-11-24 01:35:23,793 INFO L87 Difference]: Start difference. First operand 390 states and 426 transitions. Second operand has 55 states, 54 states have (on average 3.685185185185185) internal successors, (199), 55 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:35:25,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:35:25,342 INFO L93 Difference]: Finished difference Result 482 states and 521 transitions. [2024-11-24 01:35:25,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-24 01:35:25,342 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 54 states have (on average 3.685185185185185) internal successors, (199), 55 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2024-11-24 01:35:25,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:35:25,344 INFO L225 Difference]: With dead ends: 482 [2024-11-24 01:35:25,344 INFO L226 Difference]: Without dead ends: 482 [2024-11-24 01:35:25,345 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 157 SyntacticMatches, 10 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2042 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=574, Invalid=5126, Unknown=0, NotChecked=0, Total=5700 [2024-11-24 01:35:25,345 INFO L435 NwaCegarLoop]: 67 mSDtfsCounter, 229 mSDsluCounter, 1377 mSDsCounter, 0 mSdLazyCounter, 1676 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 1444 SdHoareTripleChecker+Invalid, 1676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1676 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-24 01:35:25,345 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 1444 Invalid, 1676 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1676 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-24 01:35:25,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2024-11-24 01:35:25,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 410. [2024-11-24 01:35:25,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 409 states have (on average 1.097799511002445) internal successors, (449), 409 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:35:25,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 449 transitions. [2024-11-24 01:35:25,351 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 449 transitions. Word has length 98 [2024-11-24 01:35:25,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:35:25,351 INFO L471 AbstractCegarLoop]: Abstraction has 410 states and 449 transitions. [2024-11-24 01:35:25,351 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 54 states have (on average 3.685185185185185) internal successors, (199), 55 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:35:25,351 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 449 transitions. [2024-11-24 01:35:25,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-24 01:35:25,353 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:35:25,353 INFO L218 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:35:25,362 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-11-24 01:35:25,553 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:35:25,553 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-24 01:35:25,554 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:35:25,554 INFO L85 PathProgramCache]: Analyzing trace with hash -6391068, now seen corresponding path program 14 times [2024-11-24 01:35:25,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:35:25,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530709643] [2024-11-24 01:35:25,554 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 01:35:25,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:35:25,587 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 01:35:25,587 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:35:26,555 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 20 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:35:26,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:35:26,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530709643] [2024-11-24 01:35:26,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530709643] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:35:26,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [449756582] [2024-11-24 01:35:26,556 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 01:35:26,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:35:26,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:35:26,561 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:35:26,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-24 01:35:26,743 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 01:35:26,743 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:35:26,746 INFO L256 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 139 conjuncts are in the unsatisfiable core [2024-11-24 01:35:26,751 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:35:27,511 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 [2024-11-24 01:35:27,569 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2024-11-24 01:35:27,911 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-24 01:35:27,913 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-24 01:35:27,913 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 15 treesize of output 10 [2024-11-24 01:35:30,194 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-24 01:35:30,195 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 20 treesize of output 17 [2024-11-24 01:35:30,593 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 120 proven. 278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:35:30,594 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:35:33,403 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 17 [2024-11-24 01:35:33,413 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 36 treesize of output 32 [2024-11-24 01:35:33,419 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 [2024-11-24 01:35:33,597 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 11 [2024-11-24 01:35:33,600 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 [2024-11-24 01:35:35,676 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 120 proven. 278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:35:35,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [449756582] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:35:35,676 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:35:35,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 34, 34] total 96 [2024-11-24 01:35:35,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755192554] [2024-11-24 01:35:35,676 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:35:35,677 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2024-11-24 01:35:35,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:35:35,678 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2024-11-24 01:35:35,678 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=492, Invalid=8628, Unknown=0, NotChecked=0, Total=9120 [2024-11-24 01:35:35,678 INFO L87 Difference]: Start difference. First operand 410 states and 449 transitions. Second operand has 96 states, 96 states have (on average 3.15625) internal successors, (303), 96 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:35:50,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:35:50,870 INFO L93 Difference]: Finished difference Result 1149 states and 1235 transitions. [2024-11-24 01:35:50,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2024-11-24 01:35:50,870 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 3.15625) internal successors, (303), 96 states have internal predecessors, (303), 0 states have call successors, (0), 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 103 [2024-11-24 01:35:50,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:35:50,872 INFO L225 Difference]: With dead ends: 1149 [2024-11-24 01:35:50,872 INFO L226 Difference]: Without dead ends: 793 [2024-11-24 01:35:50,873 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6293 ImplicationChecksByTransitivity, 16.9s TimeCoverageRelationStatistics Valid=1409, Invalid=27321, Unknown=0, NotChecked=0, Total=28730 [2024-11-24 01:35:50,873 INFO L435 NwaCegarLoop]: 91 mSDtfsCounter, 223 mSDsluCounter, 4123 mSDsCounter, 0 mSdLazyCounter, 6096 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 4214 SdHoareTripleChecker+Invalid, 6114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 6096 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2024-11-24 01:35:50,874 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 4214 Invalid, 6114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 6096 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2024-11-24 01:35:50,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 793 states. [2024-11-24 01:35:50,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 793 to 465. [2024-11-24 01:35:50,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 465 states, 464 states have (on average 1.0926724137931034) internal successors, (507), 464 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:35:50,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 507 transitions. [2024-11-24 01:35:50,884 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 507 transitions. Word has length 103 [2024-11-24 01:35:50,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:35:50,887 INFO L471 AbstractCegarLoop]: Abstraction has 465 states and 507 transitions. [2024-11-24 01:35:50,887 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 3.15625) internal successors, (303), 96 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:35:50,887 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 507 transitions. [2024-11-24 01:35:50,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-24 01:35:50,889 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:35:50,889 INFO L218 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:35:50,900 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-24 01:35:51,089 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2024-11-24 01:35:51,090 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-24 01:35:51,090 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:35:51,090 INFO L85 PathProgramCache]: Analyzing trace with hash 293279111, now seen corresponding path program 15 times [2024-11-24 01:35:51,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:35:51,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658588384] [2024-11-24 01:35:51,090 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-24 01:35:51,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:35:51,146 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2024-11-24 01:35:51,147 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:35:52,803 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 22 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:35:52,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:35:52,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658588384] [2024-11-24 01:35:52,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658588384] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:35:52,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [340522126] [2024-11-24 01:35:52,803 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-24 01:35:52,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:35:52,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:35:52,806 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:35:52,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-24 01:35:53,106 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2024-11-24 01:35:53,106 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:35:53,111 INFO L256 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 130 conjuncts are in the unsatisfiable core [2024-11-24 01:35:53,113 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:35:53,692 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-24 01:35:53,972 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 22 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:35:53,972 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:35:54,095 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-24 01:35:54,098 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-24 01:35:54,285 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 22 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:35:54,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [340522126] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:35:54,286 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:35:54,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 31, 31] total 54 [2024-11-24 01:35:54,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496943724] [2024-11-24 01:35:54,286 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:35:54,286 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2024-11-24 01:35:54,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:35:54,287 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2024-11-24 01:35:54,287 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=2709, Unknown=0, NotChecked=0, Total=2862 [2024-11-24 01:35:54,287 INFO L87 Difference]: Start difference. First operand 465 states and 507 transitions. Second operand has 54 states, 54 states have (on average 3.259259259259259) internal successors, (176), 54 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:35:57,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:35:57,092 INFO L93 Difference]: Finished difference Result 988 states and 1080 transitions. [2024-11-24 01:35:57,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-11-24 01:35:57,093 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 3.259259259259259) internal successors, (176), 54 states have internal predecessors, (176), 0 states have call successors, (0), 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 112 [2024-11-24 01:35:57,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:35:57,095 INFO L225 Difference]: With dead ends: 988 [2024-11-24 01:35:57,095 INFO L226 Difference]: Without dead ends: 926 [2024-11-24 01:35:57,095 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1514 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=334, Invalid=6472, Unknown=0, NotChecked=0, Total=6806 [2024-11-24 01:35:57,095 INFO L435 NwaCegarLoop]: 84 mSDtfsCounter, 138 mSDsluCounter, 2682 mSDsCounter, 0 mSdLazyCounter, 2680 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 2766 SdHoareTripleChecker+Invalid, 2690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 2680 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-24 01:35:57,096 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 2766 Invalid, 2690 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 2680 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-24 01:35:57,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2024-11-24 01:35:57,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 832. [2024-11-24 01:35:57,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 832 states, 831 states have (on average 1.111913357400722) internal successors, (924), 831 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:35:57,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 832 states to 832 states and 924 transitions. [2024-11-24 01:35:57,107 INFO L78 Accepts]: Start accepts. Automaton has 832 states and 924 transitions. Word has length 112 [2024-11-24 01:35:57,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:35:57,107 INFO L471 AbstractCegarLoop]: Abstraction has 832 states and 924 transitions. [2024-11-24 01:35:57,107 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 3.259259259259259) internal successors, (176), 54 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:35:57,107 INFO L276 IsEmpty]: Start isEmpty. Operand 832 states and 924 transitions. [2024-11-24 01:35:57,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-24 01:35:57,110 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:35:57,110 INFO L218 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:35:57,124 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-24 01:35:57,310 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2024-11-24 01:35:57,310 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-24 01:35:57,311 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:35:57,311 INFO L85 PathProgramCache]: Analyzing trace with hash 1786090240, now seen corresponding path program 16 times [2024-11-24 01:35:57,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:35:57,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928352355] [2024-11-24 01:35:57,311 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-24 01:35:57,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:35:57,335 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-24 01:35:57,335 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:35:58,368 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 153 proven. 375 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:35:58,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:35:58,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928352355] [2024-11-24 01:35:58,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928352355] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:35:58,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1597963550] [2024-11-24 01:35:58,369 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-24 01:35:58,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:35:58,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:35:58,372 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:35:58,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-24 01:35:58,608 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-24 01:35:58,608 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:35:58,611 INFO L256 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 115 conjuncts are in the unsatisfiable core [2024-11-24 01:35:58,614 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:35:59,032 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 190 proven. 338 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:35:59,032 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:36:00,154 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-24 01:36:00,343 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 190 proven. 338 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:36:00,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1597963550] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:36:00,344 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:36:00,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 47 [2024-11-24 01:36:00,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058613421] [2024-11-24 01:36:00,344 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:36:00,345 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-11-24 01:36:00,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:36:00,345 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-11-24 01:36:00,345 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=223, Invalid=2033, Unknown=0, NotChecked=0, Total=2256 [2024-11-24 01:36:00,346 INFO L87 Difference]: Start difference. First operand 832 states and 924 transitions. Second operand has 48 states, 47 states have (on average 3.9361702127659575) internal successors, (185), 48 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:36:02,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:36:02,824 INFO L93 Difference]: Finished difference Result 1089 states and 1201 transitions. [2024-11-24 01:36:02,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-11-24 01:36:02,825 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 3.9361702127659575) internal successors, (185), 48 states have internal predecessors, (185), 0 states have call successors, (0), 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 116 [2024-11-24 01:36:02,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:36:02,827 INFO L225 Difference]: With dead ends: 1089 [2024-11-24 01:36:02,827 INFO L226 Difference]: Without dead ends: 1089 [2024-11-24 01:36:02,827 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 201 SyntacticMatches, 12 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1085 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=503, Invalid=4753, Unknown=0, NotChecked=0, Total=5256 [2024-11-24 01:36:02,828 INFO L435 NwaCegarLoop]: 80 mSDtfsCounter, 279 mSDsluCounter, 1769 mSDsCounter, 0 mSdLazyCounter, 2117 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 1849 SdHoareTripleChecker+Invalid, 2117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-24 01:36:02,828 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [279 Valid, 1849 Invalid, 2117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2117 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-24 01:36:02,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1089 states. [2024-11-24 01:36:02,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1089 to 833. [2024-11-24 01:36:02,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 833 states, 832 states have (on average 1.1153846153846154) internal successors, (928), 832 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:36:02,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 833 states to 833 states and 928 transitions. [2024-11-24 01:36:02,838 INFO L78 Accepts]: Start accepts. Automaton has 833 states and 928 transitions. Word has length 116 [2024-11-24 01:36:02,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:36:02,839 INFO L471 AbstractCegarLoop]: Abstraction has 833 states and 928 transitions. [2024-11-24 01:36:02,839 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 3.9361702127659575) internal successors, (185), 48 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:36:02,839 INFO L276 IsEmpty]: Start isEmpty. Operand 833 states and 928 transitions. [2024-11-24 01:36:02,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-24 01:36:02,841 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:36:02,841 INFO L218 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:36:02,853 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-11-24 01:36:03,042 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2024-11-24 01:36:03,042 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-24 01:36:03,042 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:36:03,042 INFO L85 PathProgramCache]: Analyzing trace with hash -1344500494, now seen corresponding path program 17 times [2024-11-24 01:36:03,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:36:03,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430720309] [2024-11-24 01:36:03,042 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-24 01:36:03,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:36:03,085 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2024-11-24 01:36:03,085 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:36:04,607 INFO L134 CoverageAnalysis]: Checked inductivity of 585 backedges. 24 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:36:04,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:36:04,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430720309] [2024-11-24 01:36:04,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430720309] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:36:04,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [947678011] [2024-11-24 01:36:04,607 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-24 01:36:04,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:36:04,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:36:04,609 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:36:04,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-24 01:36:04,894 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2024-11-24 01:36:04,894 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:36:04,901 INFO L256 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 140 conjuncts are in the unsatisfiable core [2024-11-24 01:36:04,913 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:36:05,647 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-24 01:36:05,987 INFO L134 CoverageAnalysis]: Checked inductivity of 585 backedges. 24 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:36:05,987 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:36:06,141 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-24 01:36:06,144 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-24 01:36:06,341 INFO L134 CoverageAnalysis]: Checked inductivity of 585 backedges. 24 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:36:06,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [947678011] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:36:06,341 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:36:06,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 33, 33] total 56 [2024-11-24 01:36:06,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989882262] [2024-11-24 01:36:06,341 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:36:06,342 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-11-24 01:36:06,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:36:06,342 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-11-24 01:36:06,342 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=2921, Unknown=0, NotChecked=0, Total=3080 [2024-11-24 01:36:06,343 INFO L87 Difference]: Start difference. First operand 833 states and 928 transitions. Second operand has 56 states, 56 states have (on average 3.3035714285714284) internal successors, (185), 56 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:36:09,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:36:09,223 INFO L93 Difference]: Finished difference Result 1219 states and 1347 transitions. [2024-11-24 01:36:09,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-11-24 01:36:09,225 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 3.3035714285714284) internal successors, (185), 56 states have internal predecessors, (185), 0 states have call successors, (0), 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 121 [2024-11-24 01:36:09,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:36:09,227 INFO L225 Difference]: With dead ends: 1219 [2024-11-24 01:36:09,227 INFO L226 Difference]: Without dead ends: 861 [2024-11-24 01:36:09,227 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1609 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=339, Invalid=6801, Unknown=0, NotChecked=0, Total=7140 [2024-11-24 01:36:09,227 INFO L435 NwaCegarLoop]: 92 mSDtfsCounter, 148 mSDsluCounter, 3518 mSDsCounter, 0 mSdLazyCounter, 3290 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 3610 SdHoareTripleChecker+Invalid, 3302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 3290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-24 01:36:09,228 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 3610 Invalid, 3302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 3290 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-24 01:36:09,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 861 states. [2024-11-24 01:36:09,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 861 to 849. [2024-11-24 01:36:09,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 849 states, 848 states have (on average 1.1132075471698113) internal successors, (944), 848 states have internal predecessors, (944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:36:09,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 849 states to 849 states and 944 transitions. [2024-11-24 01:36:09,239 INFO L78 Accepts]: Start accepts. Automaton has 849 states and 944 transitions. Word has length 121 [2024-11-24 01:36:09,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:36:09,239 INFO L471 AbstractCegarLoop]: Abstraction has 849 states and 944 transitions. [2024-11-24 01:36:09,239 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 3.3035714285714284) internal successors, (185), 56 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:36:09,240 INFO L276 IsEmpty]: Start isEmpty. Operand 849 states and 944 transitions. [2024-11-24 01:36:09,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-24 01:36:09,242 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:36:09,242 INFO L218 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 11, 10, 10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:36:09,254 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-11-24 01:36:09,442 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:36:09,442 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-24 01:36:09,443 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:36:09,443 INFO L85 PathProgramCache]: Analyzing trace with hash -548878191, now seen corresponding path program 2 times [2024-11-24 01:36:09,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:36:09,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680655690] [2024-11-24 01:36:09,443 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 01:36:09,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:36:09,473 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 01:36:09,473 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:36:10,903 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 120 proven. 419 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-24 01:36:10,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:36:10,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680655690] [2024-11-24 01:36:10,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680655690] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:36:10,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [585623837] [2024-11-24 01:36:10,903 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 01:36:10,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:36:10,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:36:10,907 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:36:10,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-24 01:36:11,102 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 01:36:11,102 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:36:11,105 INFO L256 TraceCheckSpWp]: Trace formula consists of 494 conjuncts, 108 conjuncts are in the unsatisfiable core [2024-11-24 01:36:11,108 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:36:11,880 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 153 proven. 386 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-24 01:36:11,880 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:36:12,798 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-24 01:36:13,141 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 153 proven. 386 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-24 01:36:13,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [585623837] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:36:13,141 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:36:13,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 27, 27] total 59 [2024-11-24 01:36:13,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567011629] [2024-11-24 01:36:13,142 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:36:13,142 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-11-24 01:36:13,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:36:13,143 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-11-24 01:36:13,143 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=358, Invalid=3182, Unknown=0, NotChecked=0, Total=3540 [2024-11-24 01:36:13,143 INFO L87 Difference]: Start difference. First operand 849 states and 944 transitions. Second operand has 60 states, 59 states have (on average 4.203389830508475) internal successors, (248), 60 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:36:15,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:36:15,319 INFO L93 Difference]: Finished difference Result 1011 states and 1103 transitions. [2024-11-24 01:36:15,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-24 01:36:15,320 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 59 states have (on average 4.203389830508475) internal successors, (248), 60 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2024-11-24 01:36:15,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:36:15,321 INFO L225 Difference]: With dead ends: 1011 [2024-11-24 01:36:15,321 INFO L226 Difference]: Without dead ends: 579 [2024-11-24 01:36:15,322 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 206 SyntacticMatches, 11 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2400 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=663, Invalid=6143, Unknown=0, NotChecked=0, Total=6806 [2024-11-24 01:36:15,322 INFO L435 NwaCegarLoop]: 71 mSDtfsCounter, 77 mSDsluCounter, 1794 mSDsCounter, 0 mSdLazyCounter, 2207 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 1865 SdHoareTripleChecker+Invalid, 2207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-24 01:36:15,322 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 1865 Invalid, 2207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2207 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-24 01:36:15,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2024-11-24 01:36:15,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 498. [2024-11-24 01:36:15,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 498 states, 497 states have (on average 1.0925553319919517) internal successors, (543), 497 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:36:15,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 543 transitions. [2024-11-24 01:36:15,331 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 543 transitions. Word has length 124 [2024-11-24 01:36:15,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:36:15,331 INFO L471 AbstractCegarLoop]: Abstraction has 498 states and 543 transitions. [2024-11-24 01:36:15,331 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 59 states have (on average 4.203389830508475) internal successors, (248), 60 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:36:15,331 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 543 transitions. [2024-11-24 01:36:15,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-24 01:36:15,333 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:36:15,333 INFO L218 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:36:15,346 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-11-24 01:36:15,533 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2024-11-24 01:36:15,534 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-24 01:36:15,534 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:36:15,534 INFO L85 PathProgramCache]: Analyzing trace with hash 588588953, now seen corresponding path program 18 times [2024-11-24 01:36:15,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:36:15,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560494696] [2024-11-24 01:36:15,534 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-24 01:36:15,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:36:15,587 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2024-11-24 01:36:15,587 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:36:17,923 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 190 proven. 440 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:36:17,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:36:17,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560494696] [2024-11-24 01:36:17,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560494696] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:36:17,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1422119688] [2024-11-24 01:36:17,924 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-24 01:36:17,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:36:17,924 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:36:17,926 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:36:17,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-24 01:36:18,413 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2024-11-24 01:36:18,413 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:36:18,417 INFO L256 TraceCheckSpWp]: Trace formula consists of 488 conjuncts, 105 conjuncts are in the unsatisfiable core [2024-11-24 01:36:18,421 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:36:18,428 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-11-24 01:36:19,347 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 231 proven. 399 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:36:19,347 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:36:21,812 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 231 proven. 399 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:36:21,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1422119688] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:36:21,812 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:36:21,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 31, 31] total 83 [2024-11-24 01:36:21,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242625123] [2024-11-24 01:36:21,812 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:36:21,813 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2024-11-24 01:36:21,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:36:21,814 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2024-11-24 01:36:21,815 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=917, Invalid=6055, Unknown=0, NotChecked=0, Total=6972 [2024-11-24 01:36:21,815 INFO L87 Difference]: Start difference. First operand 498 states and 543 transitions. Second operand has 84 states, 83 states have (on average 3.7710843373493974) internal successors, (313), 84 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:36:24,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:36:24,077 INFO L93 Difference]: Finished difference Result 617 states and 665 transitions. [2024-11-24 01:36:24,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-11-24 01:36:24,077 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 83 states have (on average 3.7710843373493974) internal successors, (313), 84 states have internal predecessors, (313), 0 states have call successors, (0), 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 125 [2024-11-24 01:36:24,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:36:24,079 INFO L225 Difference]: With dead ends: 617 [2024-11-24 01:36:24,079 INFO L226 Difference]: Without dead ends: 617 [2024-11-24 01:36:24,080 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4290 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=1727, Invalid=10483, Unknown=0, NotChecked=0, Total=12210 [2024-11-24 01:36:24,080 INFO L435 NwaCegarLoop]: 30 mSDtfsCounter, 355 mSDsluCounter, 589 mSDsCounter, 0 mSdLazyCounter, 1054 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 619 SdHoareTripleChecker+Invalid, 1078 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1054 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-24 01:36:24,080 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [355 Valid, 619 Invalid, 1078 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1054 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-24 01:36:24,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2024-11-24 01:36:24,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 518. [2024-11-24 01:36:24,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 518 states, 517 states have (on average 1.0947775628626693) internal successors, (566), 517 states have internal predecessors, (566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:36:24,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 566 transitions. [2024-11-24 01:36:24,090 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 566 transitions. Word has length 125 [2024-11-24 01:36:24,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:36:24,090 INFO L471 AbstractCegarLoop]: Abstraction has 518 states and 566 transitions. [2024-11-24 01:36:24,090 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 83 states have (on average 3.7710843373493974) internal successors, (313), 84 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:36:24,090 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 566 transitions. [2024-11-24 01:36:24,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-11-24 01:36:24,092 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:36:24,092 INFO L218 NwaCegarLoop]: trace histogram [14, 13, 13, 13, 13, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:36:24,103 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-11-24 01:36:24,292 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2024-11-24 01:36:24,293 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-24 01:36:24,293 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:36:24,293 INFO L85 PathProgramCache]: Analyzing trace with hash 351203321, now seen corresponding path program 19 times [2024-11-24 01:36:24,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:36:24,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075919726] [2024-11-24 01:36:24,293 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-24 01:36:24,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:36:24,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:36:25,585 INFO L134 CoverageAnalysis]: Checked inductivity of 692 backedges. 26 proven. 666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:36:25,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:36:25,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075919726] [2024-11-24 01:36:25,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075919726] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:36:25,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [801293963] [2024-11-24 01:36:25,586 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-24 01:36:25,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:36:25,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:36:25,588 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:36:25,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-24 01:36:25,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:36:25,806 INFO L256 TraceCheckSpWp]: Trace formula consists of 506 conjuncts, 174 conjuncts are in the unsatisfiable core [2024-11-24 01:36:25,810 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:36:26,605 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 [2024-11-24 01:36:26,654 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-24 01:36:28,022 INFO L134 CoverageAnalysis]: Checked inductivity of 692 backedges. 38 proven. 654 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:36:28,022 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:36:29,494 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 17 [2024-11-24 01:36:29,497 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2024-11-24 01:36:29,507 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 11 [2024-11-24 01:36:29,509 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2024-11-24 01:36:29,990 INFO L134 CoverageAnalysis]: Checked inductivity of 692 backedges. 38 proven. 654 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:36:29,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [801293963] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:36:29,990 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:36:29,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 39, 39] total 96 [2024-11-24 01:36:29,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733014527] [2024-11-24 01:36:29,990 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:36:29,991 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2024-11-24 01:36:29,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:36:29,992 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2024-11-24 01:36:29,992 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=266, Invalid=8854, Unknown=0, NotChecked=0, Total=9120 [2024-11-24 01:36:29,992 INFO L87 Difference]: Start difference. First operand 518 states and 566 transitions. Second operand has 96 states, 96 states have (on average 3.4375) internal successors, (330), 96 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:36:38,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:36:38,246 INFO L93 Difference]: Finished difference Result 1063 states and 1148 transitions. [2024-11-24 01:36:38,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2024-11-24 01:36:38,246 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 3.4375) internal successors, (330), 96 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2024-11-24 01:36:38,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:36:38,248 INFO L225 Difference]: With dead ends: 1063 [2024-11-24 01:36:38,248 INFO L226 Difference]: Without dead ends: 605 [2024-11-24 01:36:38,248 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 376 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8591 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=839, Invalid=30313, Unknown=0, NotChecked=0, Total=31152 [2024-11-24 01:36:38,249 INFO L435 NwaCegarLoop]: 81 mSDtfsCounter, 273 mSDsluCounter, 5059 mSDsCounter, 0 mSdLazyCounter, 7312 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 5140 SdHoareTripleChecker+Invalid, 7337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 7312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:36:38,249 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [273 Valid, 5140 Invalid, 7337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 7312 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2024-11-24 01:36:38,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2024-11-24 01:36:38,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 534. [2024-11-24 01:36:38,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 534 states, 533 states have (on average 1.0919324577861163) internal successors, (582), 533 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:36:38,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 582 transitions. [2024-11-24 01:36:38,254 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 582 transitions. Word has length 130 [2024-11-24 01:36:38,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:36:38,254 INFO L471 AbstractCegarLoop]: Abstraction has 534 states and 582 transitions. [2024-11-24 01:36:38,254 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 3.4375) internal successors, (330), 96 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:36:38,254 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 582 transitions. [2024-11-24 01:36:38,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-11-24 01:36:38,255 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:36:38,255 INFO L218 NwaCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:36:38,266 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-11-24 01:36:38,456 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2024-11-24 01:36:38,456 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-24 01:36:38,456 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:36:38,456 INFO L85 PathProgramCache]: Analyzing trace with hash 1252811058, now seen corresponding path program 20 times [2024-11-24 01:36:38,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:36:38,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163088261] [2024-11-24 01:36:38,456 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 01:36:38,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:36:38,484 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 01:36:38,484 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:36:40,328 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 231 proven. 510 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:36:40,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:36:40,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163088261] [2024-11-24 01:36:40,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163088261] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:36:40,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1914855950] [2024-11-24 01:36:40,329 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 01:36:40,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:36:40,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:36:40,330 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:36:40,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-24 01:36:40,541 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 01:36:40,541 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:36:40,544 INFO L256 TraceCheckSpWp]: Trace formula consists of 519 conjuncts, 140 conjuncts are in the unsatisfiable core [2024-11-24 01:36:40,548 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:36:41,808 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 276 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:36:41,808 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:36:42,900 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2024-11-24 01:36:43,890 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 276 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:36:43,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1914855950] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:36:43,890 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:36:43,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 33, 33] total 85 [2024-11-24 01:36:43,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836307659] [2024-11-24 01:36:43,890 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:36:43,890 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2024-11-24 01:36:43,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:36:43,892 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2024-11-24 01:36:43,892 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=902, Invalid=6408, Unknown=0, NotChecked=0, Total=7310 [2024-11-24 01:36:43,892 INFO L87 Difference]: Start difference. First operand 534 states and 582 transitions. Second operand has 86 states, 85 states have (on average 3.8941176470588235) internal successors, (331), 86 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:36:46,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:36:46,587 INFO L93 Difference]: Finished difference Result 662 states and 713 transitions. [2024-11-24 01:36:46,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-24 01:36:46,588 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 85 states have (on average 3.8941176470588235) internal successors, (331), 86 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 134 [2024-11-24 01:36:46,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:36:46,589 INFO L225 Difference]: With dead ends: 662 [2024-11-24 01:36:46,589 INFO L226 Difference]: Without dead ends: 662 [2024-11-24 01:36:46,590 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4113 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=1342, Invalid=11768, Unknown=0, NotChecked=0, Total=13110 [2024-11-24 01:36:46,590 INFO L435 NwaCegarLoop]: 89 mSDtfsCounter, 338 mSDsluCounter, 1871 mSDsCounter, 0 mSdLazyCounter, 2364 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 338 SdHoareTripleChecker+Valid, 1960 SdHoareTripleChecker+Invalid, 2364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-24 01:36:46,590 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [338 Valid, 1960 Invalid, 2364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2364 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-24 01:36:46,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2024-11-24 01:36:46,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 554. [2024-11-24 01:36:46,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 554 states, 553 states have (on average 1.0940325497287522) internal successors, (605), 553 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:36:46,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 605 transitions. [2024-11-24 01:36:46,595 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 605 transitions. Word has length 134 [2024-11-24 01:36:46,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:36:46,595 INFO L471 AbstractCegarLoop]: Abstraction has 554 states and 605 transitions. [2024-11-24 01:36:46,595 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 85 states have (on average 3.8941176470588235) internal successors, (331), 86 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:36:46,595 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 605 transitions. [2024-11-24 01:36:46,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-11-24 01:36:46,596 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:36:46,596 INFO L218 NwaCegarLoop]: trace histogram [15, 14, 14, 14, 14, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:36:46,605 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2024-11-24 01:36:46,796 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2024-11-24 01:36:46,797 INFO L396 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-24 01:36:46,797 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:36:46,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1560858112, now seen corresponding path program 21 times [2024-11-24 01:36:46,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:36:46,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618257142] [2024-11-24 01:36:46,797 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-24 01:36:46,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:36:46,852 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2024-11-24 01:36:46,852 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:36:49,093 INFO L134 CoverageAnalysis]: Checked inductivity of 808 backedges. 28 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:36:49,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:36:49,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618257142] [2024-11-24 01:36:49,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618257142] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:36:49,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1034419990] [2024-11-24 01:36:49,093 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-24 01:36:49,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:36:49,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:36:49,095 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:36:49,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-24 01:36:49,705 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2024-11-24 01:36:49,705 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:36:49,711 INFO L256 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 188 conjuncts are in the unsatisfiable core [2024-11-24 01:36:49,717 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:36:50,979 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 [2024-11-24 01:36:51,044 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-24 01:36:52,927 INFO L134 CoverageAnalysis]: Checked inductivity of 808 backedges. 41 proven. 767 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:36:52,927 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:36:54,533 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 17 [2024-11-24 01:36:54,535 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 28 treesize of output 24 [2024-11-24 01:36:54,625 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 11 [2024-11-24 01:36:54,627 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2024-11-24 01:36:56,096 INFO L134 CoverageAnalysis]: Checked inductivity of 808 backedges. 41 proven. 767 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:36:56,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1034419990] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:36:56,096 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:36:56,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 42, 41] total 121 [2024-11-24 01:36:56,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540336089] [2024-11-24 01:36:56,096 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:36:56,097 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 121 states [2024-11-24 01:36:56,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:36:56,098 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 121 interpolants. [2024-11-24 01:36:56,099 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=373, Invalid=14147, Unknown=0, NotChecked=0, Total=14520 [2024-11-24 01:36:56,099 INFO L87 Difference]: Start difference. First operand 554 states and 605 transitions. Second operand has 121 states, 121 states have (on average 3.355371900826446) internal successors, (406), 121 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:37:06,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:37:06,950 INFO L93 Difference]: Finished difference Result 1137 states and 1228 transitions. [2024-11-24 01:37:06,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2024-11-24 01:37:06,950 INFO L78 Accepts]: Start accepts. Automaton has has 121 states, 121 states have (on average 3.355371900826446) internal successors, (406), 121 states have internal predecessors, (406), 0 states have call successors, (0), 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 139 [2024-11-24 01:37:06,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:37:06,953 INFO L225 Difference]: With dead ends: 1137 [2024-11-24 01:37:06,953 INFO L226 Difference]: Without dead ends: 645 [2024-11-24 01:37:06,955 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 413 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 213 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13439 ImplicationChecksByTransitivity, 12.3s TimeCoverageRelationStatistics Valid=1104, Invalid=44906, Unknown=0, NotChecked=0, Total=46010 [2024-11-24 01:37:06,955 INFO L435 NwaCegarLoop]: 87 mSDtfsCounter, 298 mSDsluCounter, 6269 mSDsCounter, 0 mSdLazyCounter, 8872 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 6356 SdHoareTripleChecker+Invalid, 8899 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 8872 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2024-11-24 01:37:06,955 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [298 Valid, 6356 Invalid, 8899 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 8872 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2024-11-24 01:37:06,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 645 states. [2024-11-24 01:37:06,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 645 to 570. [2024-11-24 01:37:06,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 569 states have (on average 1.0913884007029877) internal successors, (621), 569 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:37:06,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 621 transitions. [2024-11-24 01:37:06,961 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 621 transitions. Word has length 139 [2024-11-24 01:37:06,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:37:06,961 INFO L471 AbstractCegarLoop]: Abstraction has 570 states and 621 transitions. [2024-11-24 01:37:06,961 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 121 states, 121 states have (on average 3.355371900826446) internal successors, (406), 121 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:37:06,961 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 621 transitions. [2024-11-24 01:37:06,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-24 01:37:06,962 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:37:06,962 INFO L218 NwaCegarLoop]: trace histogram [15, 14, 14, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:37:06,973 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2024-11-24 01:37:07,163 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable50 [2024-11-24 01:37:07,163 INFO L396 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-24 01:37:07,163 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:37:07,163 INFO L85 PathProgramCache]: Analyzing trace with hash 456436967, now seen corresponding path program 22 times [2024-11-24 01:37:07,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:37:07,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581732601] [2024-11-24 01:37:07,163 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-24 01:37:07,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:37:07,187 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-24 01:37:07,187 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:37:08,537 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 276 proven. 585 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:37:08,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:37:08,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581732601] [2024-11-24 01:37:08,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581732601] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:37:08,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1875424716] [2024-11-24 01:37:08,537 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-24 01:37:08,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:37:08,538 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:37:08,539 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:37:08,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-11-24 01:37:08,874 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-24 01:37:08,874 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:37:08,878 INFO L256 TraceCheckSpWp]: Trace formula consists of 485 conjuncts, 142 conjuncts are in the unsatisfiable core [2024-11-24 01:37:08,880 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:37:09,314 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 325 proven. 536 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:37:09,314 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:37:10,612 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 5 treesize of output 3 [2024-11-24 01:37:10,851 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 325 proven. 536 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:37:10,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1875424716] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:37:10,851 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:37:10,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 56 [2024-11-24 01:37:10,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341380686] [2024-11-24 01:37:10,852 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:37:10,852 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2024-11-24 01:37:10,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:37:10,853 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2024-11-24 01:37:10,853 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=316, Invalid=2876, Unknown=0, NotChecked=0, Total=3192 [2024-11-24 01:37:10,853 INFO L87 Difference]: Start difference. First operand 570 states and 621 transitions. Second operand has 57 states, 56 states have (on average 4.053571428571429) internal successors, (227), 57 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:37:14,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:37:14,168 INFO L93 Difference]: Finished difference Result 707 states and 761 transitions. [2024-11-24 01:37:14,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2024-11-24 01:37:14,168 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 56 states have (on average 4.053571428571429) internal successors, (227), 57 states have internal predecessors, (227), 0 states have call successors, (0), 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 143 [2024-11-24 01:37:14,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:37:14,170 INFO L225 Difference]: With dead ends: 707 [2024-11-24 01:37:14,170 INFO L226 Difference]: Without dead ends: 707 [2024-11-24 01:37:14,171 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 249 SyntacticMatches, 15 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1679 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=710, Invalid=6946, Unknown=0, NotChecked=0, Total=7656 [2024-11-24 01:37:14,171 INFO L435 NwaCegarLoop]: 97 mSDtfsCounter, 264 mSDsluCounter, 2626 mSDsCounter, 0 mSdLazyCounter, 3345 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 2723 SdHoareTripleChecker+Invalid, 3345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:37:14,172 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [264 Valid, 2723 Invalid, 3345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3345 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-24 01:37:14,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2024-11-24 01:37:14,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 590. [2024-11-24 01:37:14,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 590 states, 589 states have (on average 1.0933786078098473) internal successors, (644), 589 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:37:14,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 644 transitions. [2024-11-24 01:37:14,179 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 644 transitions. Word has length 143 [2024-11-24 01:37:14,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:37:14,180 INFO L471 AbstractCegarLoop]: Abstraction has 590 states and 644 transitions. [2024-11-24 01:37:14,180 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 56 states have (on average 4.053571428571429) internal successors, (227), 57 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:37:14,180 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 644 transitions. [2024-11-24 01:37:14,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-11-24 01:37:14,181 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:37:14,181 INFO L218 NwaCegarLoop]: trace histogram [16, 15, 15, 15, 15, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:37:14,191 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2024-11-24 01:37:14,385 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2024-11-24 01:37:14,385 INFO L396 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-24 01:37:14,386 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:37:14,386 INFO L85 PathProgramCache]: Analyzing trace with hash -774599829, now seen corresponding path program 23 times [2024-11-24 01:37:14,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:37:14,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631195786] [2024-11-24 01:37:14,386 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-24 01:37:14,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:37:14,450 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2024-11-24 01:37:14,450 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:37:16,243 INFO L134 CoverageAnalysis]: Checked inductivity of 933 backedges. 30 proven. 903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:37:16,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:37:16,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631195786] [2024-11-24 01:37:16,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631195786] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:37:16,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [344798762] [2024-11-24 01:37:16,244 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-24 01:37:16,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:37:16,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:37:16,245 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:37:16,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-11-24 01:37:16,581 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2024-11-24 01:37:16,581 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:37:16,586 INFO L256 TraceCheckSpWp]: Trace formula consists of 568 conjuncts, 167 conjuncts are in the unsatisfiable core [2024-11-24 01:37:16,589 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:37:16,595 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-11-24 01:37:17,407 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2024-11-24 01:37:19,958 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-24 01:37:19,959 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 20 treesize of output 15 [2024-11-24 01:37:20,372 INFO L134 CoverageAnalysis]: Checked inductivity of 933 backedges. 325 proven. 608 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:37:20,372 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:37:23,248 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-24 01:37:23,258 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-24 01:37:26,522 INFO L134 CoverageAnalysis]: Checked inductivity of 933 backedges. 325 proven. 608 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:37:26,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [344798762] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:37:26,522 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:37:26,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 39, 39] total 119 [2024-11-24 01:37:26,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506065664] [2024-11-24 01:37:26,523 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:37:26,523 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 119 states [2024-11-24 01:37:26,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:37:26,524 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2024-11-24 01:37:26,525 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1053, Invalid=12989, Unknown=0, NotChecked=0, Total=14042 [2024-11-24 01:37:26,526 INFO L87 Difference]: Start difference. First operand 590 states and 644 transitions. Second operand has 119 states, 119 states have (on average 3.6638655462184873) internal successors, (436), 119 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:37:32,777 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:37:56,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:37:56,802 INFO L93 Difference]: Finished difference Result 1200 states and 1299 transitions. [2024-11-24 01:37:56,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2024-11-24 01:37:56,803 INFO L78 Accepts]: Start accepts. Automaton has has 119 states, 119 states have (on average 3.6638655462184873) internal successors, (436), 119 states have internal predecessors, (436), 0 states have call successors, (0), 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 148 [2024-11-24 01:37:56,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:37:56,804 INFO L225 Difference]: With dead ends: 1200 [2024-11-24 01:37:56,804 INFO L226 Difference]: Without dead ends: 755 [2024-11-24 01:37:56,805 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9919 ImplicationChecksByTransitivity, 32.5s TimeCoverageRelationStatistics Valid=2428, Invalid=34244, Unknown=0, NotChecked=0, Total=36672 [2024-11-24 01:37:56,805 INFO L435 NwaCegarLoop]: 97 mSDtfsCounter, 938 mSDsluCounter, 3763 mSDsCounter, 0 mSdLazyCounter, 5219 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 938 SdHoareTripleChecker+Valid, 3860 SdHoareTripleChecker+Invalid, 5222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5219 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2024-11-24 01:37:56,805 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [938 Valid, 3860 Invalid, 5222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5219 Invalid, 2 Unknown, 0 Unchecked, 5.6s Time] [2024-11-24 01:37:56,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 755 states. [2024-11-24 01:37:56,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 755 to 626. [2024-11-24 01:37:56,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 626 states, 625 states have (on average 1.0928) internal successors, (683), 625 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:37:56,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 683 transitions. [2024-11-24 01:37:56,813 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 683 transitions. Word has length 148 [2024-11-24 01:37:56,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:37:56,813 INFO L471 AbstractCegarLoop]: Abstraction has 626 states and 683 transitions. [2024-11-24 01:37:56,813 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 119 states, 119 states have (on average 3.6638655462184873) internal successors, (436), 119 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:37:56,813 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 683 transitions. [2024-11-24 01:37:56,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-11-24 01:37:56,814 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:37:56,814 INFO L218 NwaCegarLoop]: trace histogram [17, 16, 16, 16, 16, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:37:56,823 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2024-11-24 01:37:57,015 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2024-11-24 01:37:57,016 INFO L396 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-24 01:37:57,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:37:57,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1917100530, now seen corresponding path program 24 times [2024-11-24 01:37:57,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:37:57,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356788638] [2024-11-24 01:37:57,016 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-24 01:37:57,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:37:57,110 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) [2024-11-24 01:37:57,110 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:38:01,148 INFO L134 CoverageAnalysis]: Checked inductivity of 1067 backedges. 325 proven. 742 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:38:01,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:38:01,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356788638] [2024-11-24 01:38:01,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356788638] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:38:01,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [397033563] [2024-11-24 01:38:01,148 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-24 01:38:01,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:38:01,149 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:38:01,150 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:38:01,153 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-11-24 01:38:01,926 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) [2024-11-24 01:38:01,926 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:38:01,932 INFO L256 TraceCheckSpWp]: Trace formula consists of 599 conjuncts, 203 conjuncts are in the unsatisfiable core [2024-11-24 01:38:01,937 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:38:03,524 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 [2024-11-24 01:38:03,603 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-24 01:38:03,937 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-24 01:38:03,940 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-24 01:38:03,940 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 15 treesize of output 10 [2024-11-24 01:38:06,099 INFO L134 CoverageAnalysis]: Checked inductivity of 1067 backedges. 47 proven. 1020 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:38:06,099 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:38:08,769 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 17 [2024-11-24 01:38:08,773 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 28 treesize of output 24 [2024-11-24 01:38:08,965 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 11 [2024-11-24 01:38:08,968 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 [2024-11-24 01:38:12,675 INFO L134 CoverageAnalysis]: Checked inductivity of 1067 backedges. 47 proven. 1020 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:38:12,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [397033563] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:38:12,675 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:38:12,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 46, 46] total 137 [2024-11-24 01:38:12,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47879961] [2024-11-24 01:38:12,676 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:38:12,676 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 137 states [2024-11-24 01:38:12,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:38:12,677 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 137 interpolants. [2024-11-24 01:38:12,677 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=725, Invalid=17907, Unknown=0, NotChecked=0, Total=18632 [2024-11-24 01:38:12,677 INFO L87 Difference]: Start difference. First operand 626 states and 683 transitions. Second operand has 137 states, 137 states have (on average 3.3576642335766422) internal successors, (460), 137 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:38:32,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:38:32,065 INFO L93 Difference]: Finished difference Result 870 states and 928 transitions. [2024-11-24 01:38:32,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2024-11-24 01:38:32,065 INFO L78 Accepts]: Start accepts. Automaton has has 137 states, 137 states have (on average 3.3576642335766422) internal successors, (460), 137 states have internal predecessors, (460), 0 states have call successors, (0), 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 157 [2024-11-24 01:38:32,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:38:32,067 INFO L225 Difference]: With dead ends: 870 [2024-11-24 01:38:32,067 INFO L226 Difference]: Without dead ends: 784 [2024-11-24 01:38:32,068 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 465 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 238 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14200 ImplicationChecksByTransitivity, 25.0s TimeCoverageRelationStatistics Valid=3021, Invalid=54339, Unknown=0, NotChecked=0, Total=57360 [2024-11-24 01:38:32,068 INFO L435 NwaCegarLoop]: 58 mSDtfsCounter, 106 mSDsluCounter, 3864 mSDsCounter, 0 mSdLazyCounter, 7746 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 3922 SdHoareTripleChecker+Invalid, 7808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 7746 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:38:32,069 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 3922 Invalid, 7808 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 7746 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2024-11-24 01:38:32,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 784 states. [2024-11-24 01:38:32,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 784 to 704. [2024-11-24 01:38:32,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 704 states, 703 states have (on average 1.0839260312944523) internal successors, (762), 703 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:38:32,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 704 states to 704 states and 762 transitions. [2024-11-24 01:38:32,076 INFO L78 Accepts]: Start accepts. Automaton has 704 states and 762 transitions. Word has length 157 [2024-11-24 01:38:32,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:38:32,076 INFO L471 AbstractCegarLoop]: Abstraction has 704 states and 762 transitions. [2024-11-24 01:38:32,077 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 137 states, 137 states have (on average 3.3576642335766422) internal successors, (460), 137 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:38:32,077 INFO L276 IsEmpty]: Start isEmpty. Operand 704 states and 762 transitions. [2024-11-24 01:38:32,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-11-24 01:38:32,077 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:38:32,078 INFO L218 NwaCegarLoop]: trace histogram [17, 16, 16, 16, 16, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:38:32,090 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2024-11-24 01:38:32,278 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:38:32,278 INFO L396 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-24 01:38:32,278 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:38:32,278 INFO L85 PathProgramCache]: Analyzing trace with hash 608395152, now seen corresponding path program 2 times [2024-11-24 01:38:32,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:38:32,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547993549] [2024-11-24 01:38:32,279 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 01:38:32,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:38:32,314 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 01:38:32,314 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:38:34,082 INFO L134 CoverageAnalysis]: Checked inductivity of 1067 backedges. 32 proven. 1035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:38:34,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:38:34,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547993549] [2024-11-24 01:38:34,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547993549] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:38:34,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [202152130] [2024-11-24 01:38:34,083 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 01:38:34,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:38:34,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:38:34,085 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:38:34,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-11-24 01:38:34,334 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 01:38:34,334 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:38:34,338 INFO L256 TraceCheckSpWp]: Trace formula consists of 597 conjuncts, 180 conjuncts are in the unsatisfiable core [2024-11-24 01:38:34,341 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:38:35,094 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-24 01:38:35,375 INFO L134 CoverageAnalysis]: Checked inductivity of 1067 backedges. 32 proven. 1035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:38:35,375 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:38:35,512 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-24 01:38:35,514 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-24 01:38:35,709 INFO L134 CoverageAnalysis]: Checked inductivity of 1067 backedges. 32 proven. 1035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:38:35,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [202152130] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:38:35,709 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:38:35,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 41, 41] total 66 [2024-11-24 01:38:35,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129468991] [2024-11-24 01:38:35,710 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:38:35,710 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2024-11-24 01:38:35,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:38:35,711 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2024-11-24 01:38:35,711 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=4106, Unknown=0, NotChecked=0, Total=4290 [2024-11-24 01:38:35,711 INFO L87 Difference]: Start difference. First operand 704 states and 762 transitions. Second operand has 66 states, 66 states have (on average 3.5606060606060606) internal successors, (235), 66 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:38:39,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:38:39,427 INFO L93 Difference]: Finished difference Result 1209 states and 1312 transitions. [2024-11-24 01:38:39,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2024-11-24 01:38:39,427 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 3.5606060606060606) internal successors, (235), 66 states have internal predecessors, (235), 0 states have call successors, (0), 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 157 [2024-11-24 01:38:39,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:38:39,429 INFO L225 Difference]: With dead ends: 1209 [2024-11-24 01:38:39,429 INFO L226 Difference]: Without dead ends: 735 [2024-11-24 01:38:39,429 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 391 GetRequests, 291 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2235 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=404, Invalid=9898, Unknown=0, NotChecked=0, Total=10302 [2024-11-24 01:38:39,430 INFO L435 NwaCegarLoop]: 119 mSDtfsCounter, 281 mSDsluCounter, 5323 mSDsCounter, 0 mSdLazyCounter, 4888 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 5442 SdHoareTripleChecker+Invalid, 4903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 4888 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-24 01:38:39,430 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [281 Valid, 5442 Invalid, 4903 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 4888 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-24 01:38:39,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 735 states. [2024-11-24 01:38:39,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 735 to 720. [2024-11-24 01:38:39,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 720 states, 719 states have (on average 1.082058414464534) internal successors, (778), 719 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:38:39,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 720 states to 720 states and 778 transitions. [2024-11-24 01:38:39,437 INFO L78 Accepts]: Start accepts. Automaton has 720 states and 778 transitions. Word has length 157 [2024-11-24 01:38:39,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:38:39,437 INFO L471 AbstractCegarLoop]: Abstraction has 720 states and 778 transitions. [2024-11-24 01:38:39,438 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 3.5606060606060606) internal successors, (235), 66 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:38:39,438 INFO L276 IsEmpty]: Start isEmpty. Operand 720 states and 778 transitions. [2024-11-24 01:38:39,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-11-24 01:38:39,439 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:38:39,439 INFO L218 NwaCegarLoop]: trace histogram [17, 16, 16, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:38:39,451 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2024-11-24 01:38:39,639 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:38:39,640 INFO L396 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-24 01:38:39,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:38:39,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1267637833, now seen corresponding path program 3 times [2024-11-24 01:38:39,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:38:39,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537177078] [2024-11-24 01:38:39,640 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-24 01:38:39,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:38:39,706 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) [2024-11-24 01:38:39,706 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:38:42,124 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 378 proven. 750 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:38:42,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:38:42,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537177078] [2024-11-24 01:38:42,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537177078] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:38:42,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2141751897] [2024-11-24 01:38:42,124 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-24 01:38:42,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:38:42,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:38:42,126 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:38:42,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-11-24 01:38:43,097 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) [2024-11-24 01:38:43,098 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:38:43,103 INFO L256 TraceCheckSpWp]: Trace formula consists of 610 conjuncts, 186 conjuncts are in the unsatisfiable core [2024-11-24 01:38:43,106 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:38:45,402 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 0 proven. 1128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:38:45,402 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:38:47,288 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 [2024-11-24 01:38:48,658 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 435 proven. 693 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:38:48,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2141751897] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:38:48,659 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:38:48,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 40, 39] total 118 [2024-11-24 01:38:48,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021577572] [2024-11-24 01:38:48,659 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:38:48,660 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 119 states [2024-11-24 01:38:48,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:38:48,661 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2024-11-24 01:38:48,662 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1534, Invalid=12508, Unknown=0, NotChecked=0, Total=14042 [2024-11-24 01:38:48,662 INFO L87 Difference]: Start difference. First operand 720 states and 778 transitions. Second operand has 119 states, 118 states have (on average 3.9915254237288136) internal successors, (471), 119 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:38:53,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:38:53,595 INFO L93 Difference]: Finished difference Result 967 states and 1028 transitions. [2024-11-24 01:38:53,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2024-11-24 01:38:53,595 INFO L78 Accepts]: Start accepts. Automaton has has 119 states, 118 states have (on average 3.9915254237288136) internal successors, (471), 119 states have internal predecessors, (471), 0 states have call successors, (0), 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 161 [2024-11-24 01:38:53,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:38:53,599 INFO L225 Difference]: With dead ends: 967 [2024-11-24 01:38:53,599 INFO L226 Difference]: Without dead ends: 967 [2024-11-24 01:38:53,600 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 415 GetRequests, 247 SyntacticMatches, 0 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9805 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=2822, Invalid=25908, Unknown=0, NotChecked=0, Total=28730 [2024-11-24 01:38:53,600 INFO L435 NwaCegarLoop]: 107 mSDtfsCounter, 247 mSDsluCounter, 2759 mSDsCounter, 0 mSdLazyCounter, 3787 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 2866 SdHoareTripleChecker+Invalid, 3787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3787 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:38:53,600 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [247 Valid, 2866 Invalid, 3787 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3787 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-24 01:38:53,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 967 states. [2024-11-24 01:38:53,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 967 to 662. [2024-11-24 01:38:53,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 662 states, 661 states have (on average 1.092284417549168) internal successors, (722), 661 states have internal predecessors, (722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:38:53,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 722 transitions. [2024-11-24 01:38:53,606 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 722 transitions. Word has length 161 [2024-11-24 01:38:53,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:38:53,607 INFO L471 AbstractCegarLoop]: Abstraction has 662 states and 722 transitions. [2024-11-24 01:38:53,607 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 119 states, 118 states have (on average 3.9915254237288136) internal successors, (471), 119 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:38:53,607 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 722 transitions. [2024-11-24 01:38:53,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-11-24 01:38:53,608 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:38:53,608 INFO L218 NwaCegarLoop]: trace histogram [18, 17, 17, 17, 17, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:38:53,619 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2024-11-24 01:38:53,808 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:38:53,808 INFO L396 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-24 01:38:53,808 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:38:53,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1876703267, now seen corresponding path program 25 times [2024-11-24 01:38:53,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:38:53,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775460321] [2024-11-24 01:38:53,809 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-24 01:38:53,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:38:53,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:38:55,717 INFO L134 CoverageAnalysis]: Checked inductivity of 1210 backedges. 34 proven. 1176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:38:55,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:38:55,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775460321] [2024-11-24 01:38:55,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775460321] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:38:55,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1262435982] [2024-11-24 01:38:55,718 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-24 01:38:55,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:38:55,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:38:55,719 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:38:55,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-11-24 01:38:56,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:38:56,021 INFO L256 TraceCheckSpWp]: Trace formula consists of 630 conjuncts, 214 conjuncts are in the unsatisfiable core [2024-11-24 01:38:56,025 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:38:57,222 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 [2024-11-24 01:38:57,281 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-24 01:38:59,246 INFO L134 CoverageAnalysis]: Checked inductivity of 1210 backedges. 50 proven. 1160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:38:59,246 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:39:01,233 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2024-11-24 01:39:01,238 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 28 treesize of output 24 [2024-11-24 01:39:01,246 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 11 [2024-11-24 01:39:01,248 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2024-11-24 01:39:01,767 INFO L134 CoverageAnalysis]: Checked inductivity of 1210 backedges. 50 proven. 1160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:39:01,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1262435982] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:39:01,767 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:39:01,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 47, 47] total 116 [2024-11-24 01:39:01,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975733457] [2024-11-24 01:39:01,767 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:39:01,768 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 116 states [2024-11-24 01:39:01,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:39:01,769 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2024-11-24 01:39:01,770 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=322, Invalid=13018, Unknown=0, NotChecked=0, Total=13340 [2024-11-24 01:39:01,770 INFO L87 Difference]: Start difference. First operand 662 states and 722 transitions. Second operand has 116 states, 116 states have (on average 3.6379310344827585) internal successors, (422), 116 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:39:13,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:39:13,288 INFO L93 Difference]: Finished difference Result 1359 states and 1468 transitions. [2024-11-24 01:39:13,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2024-11-24 01:39:13,288 INFO L78 Accepts]: Start accepts. Automaton has has 116 states, 116 states have (on average 3.6379310344827585) internal successors, (422), 116 states have internal predecessors, (422), 0 states have call successors, (0), 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 166 [2024-11-24 01:39:13,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:39:13,290 INFO L225 Difference]: With dead ends: 1359 [2024-11-24 01:39:13,291 INFO L226 Difference]: Without dead ends: 765 [2024-11-24 01:39:13,292 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 476 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 215 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13169 ImplicationChecksByTransitivity, 11.3s TimeCoverageRelationStatistics Valid=1039, Invalid=45833, Unknown=0, NotChecked=0, Total=46872 [2024-11-24 01:39:13,292 INFO L435 NwaCegarLoop]: 105 mSDtfsCounter, 345 mSDsluCounter, 7503 mSDsCounter, 0 mSdLazyCounter, 10498 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 345 SdHoareTripleChecker+Valid, 7608 SdHoareTripleChecker+Invalid, 10531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 10498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2024-11-24 01:39:13,293 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [345 Valid, 7608 Invalid, 10531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 10498 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2024-11-24 01:39:13,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 765 states. [2024-11-24 01:39:13,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 765 to 678. [2024-11-24 01:39:13,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 678 states, 677 states have (on average 1.0901033973412113) internal successors, (738), 677 states have internal predecessors, (738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:39:13,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 738 transitions. [2024-11-24 01:39:13,297 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 738 transitions. Word has length 166 [2024-11-24 01:39:13,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:39:13,297 INFO L471 AbstractCegarLoop]: Abstraction has 678 states and 738 transitions. [2024-11-24 01:39:13,297 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 116 states, 116 states have (on average 3.6379310344827585) internal successors, (422), 116 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:39:13,298 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 738 transitions. [2024-11-24 01:39:13,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2024-11-24 01:39:13,298 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:39:13,298 INFO L218 NwaCegarLoop]: trace histogram [18, 17, 17, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:39:13,308 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2024-11-24 01:39:13,499 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2024-11-24 01:39:13,499 INFO L396 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-24 01:39:13,499 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:39:13,499 INFO L85 PathProgramCache]: Analyzing trace with hash -535113578, now seen corresponding path program 26 times [2024-11-24 01:39:13,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:39:13,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466924424] [2024-11-24 01:39:13,499 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 01:39:13,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:39:13,529 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 01:39:13,529 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:39:15,622 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 435 proven. 840 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:39:15,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:39:15,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466924424] [2024-11-24 01:39:15,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466924424] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:39:15,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [953743467] [2024-11-24 01:39:15,623 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 01:39:15,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:39:15,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:39:15,625 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:39:15,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2024-11-24 01:39:15,900 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 01:39:15,900 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:39:15,905 INFO L256 TraceCheckSpWp]: Trace formula consists of 643 conjuncts, 171 conjuncts are in the unsatisfiable core [2024-11-24 01:39:15,907 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:39:17,406 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 496 proven. 779 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:39:17,407 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:39:19,125 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-24 01:39:19,868 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 496 proven. 779 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:39:19,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [953743467] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:39:19,868 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:39:19,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 41, 41] total 87 [2024-11-24 01:39:19,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453476214] [2024-11-24 01:39:19,869 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:39:19,869 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2024-11-24 01:39:19,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:39:19,870 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2024-11-24 01:39:19,870 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=807, Invalid=6849, Unknown=0, NotChecked=0, Total=7656 [2024-11-24 01:39:19,870 INFO L87 Difference]: Start difference. First operand 678 states and 738 transitions. Second operand has 88 states, 87 states have (on average 3.9655172413793105) internal successors, (345), 88 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:39:24,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:39:24,092 INFO L93 Difference]: Finished difference Result 842 states and 905 transitions. [2024-11-24 01:39:24,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2024-11-24 01:39:24,092 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 87 states have (on average 3.9655172413793105) internal successors, (345), 88 states have internal predecessors, (345), 0 states have call successors, (0), 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 170 [2024-11-24 01:39:24,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:39:24,094 INFO L225 Difference]: With dead ends: 842 [2024-11-24 01:39:24,094 INFO L226 Difference]: Without dead ends: 842 [2024-11-24 01:39:24,094 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 418 GetRequests, 277 SyntacticMatches, 18 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6052 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=1427, Invalid=14073, Unknown=0, NotChecked=0, Total=15500 [2024-11-24 01:39:24,095 INFO L435 NwaCegarLoop]: 115 mSDtfsCounter, 307 mSDsluCounter, 3952 mSDsCounter, 0 mSdLazyCounter, 4763 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 4067 SdHoareTripleChecker+Invalid, 4763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4763 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-24 01:39:24,095 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [307 Valid, 4067 Invalid, 4763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4763 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-24 01:39:24,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 842 states. [2024-11-24 01:39:24,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 842 to 698. [2024-11-24 01:39:24,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 698 states, 697 states have (on average 1.0918220946915351) internal successors, (761), 697 states have internal predecessors, (761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:39:24,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 698 states to 698 states and 761 transitions. [2024-11-24 01:39:24,105 INFO L78 Accepts]: Start accepts. Automaton has 698 states and 761 transitions. Word has length 170 [2024-11-24 01:39:24,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:39:24,105 INFO L471 AbstractCegarLoop]: Abstraction has 698 states and 761 transitions. [2024-11-24 01:39:24,105 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 88 states, 87 states have (on average 3.9655172413793105) internal successors, (345), 88 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:39:24,106 INFO L276 IsEmpty]: Start isEmpty. Operand 698 states and 761 transitions. [2024-11-24 01:39:24,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-11-24 01:39:24,107 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:39:24,107 INFO L218 NwaCegarLoop]: trace histogram [19, 18, 18, 18, 18, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:39:24,117 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2024-11-24 01:39:24,307 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2024-11-24 01:39:24,307 INFO L396 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-24 01:39:24,308 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:39:24,308 INFO L85 PathProgramCache]: Analyzing trace with hash 283925788, now seen corresponding path program 27 times [2024-11-24 01:39:24,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:39:24,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811914876] [2024-11-24 01:39:24,308 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-24 01:39:24,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:39:24,397 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 19 check-sat command(s) [2024-11-24 01:39:24,397 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:39:26,812 INFO L134 CoverageAnalysis]: Checked inductivity of 1362 backedges. 36 proven. 1326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:39:26,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:39:26,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811914876] [2024-11-24 01:39:26,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811914876] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:39:26,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1316262689] [2024-11-24 01:39:26,813 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-24 01:39:26,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:39:26,813 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:39:26,814 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:39:26,816 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2024-11-24 01:39:28,041 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 19 check-sat command(s) [2024-11-24 01:39:28,041 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:39:28,048 INFO L256 TraceCheckSpWp]: Trace formula consists of 661 conjuncts, 228 conjuncts are in the unsatisfiable core [2024-11-24 01:39:28,053 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:39:29,720 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 [2024-11-24 01:39:29,790 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-24 01:39:32,121 INFO L134 CoverageAnalysis]: Checked inductivity of 1362 backedges. 53 proven. 1309 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:39:32,121 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:39:34,323 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 17 [2024-11-24 01:39:34,325 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 28 treesize of output 24 [2024-11-24 01:39:34,426 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 11 [2024-11-24 01:39:34,429 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2024-11-24 01:39:36,537 INFO L134 CoverageAnalysis]: Checked inductivity of 1362 backedges. 53 proven. 1309 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:39:36,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1316262689] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:39:36,537 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:39:36,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 50, 49] total 146 [2024-11-24 01:39:36,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462738942] [2024-11-24 01:39:36,537 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:39:36,538 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 146 states [2024-11-24 01:39:36,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:39:36,539 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 146 interpolants. [2024-11-24 01:39:36,540 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=452, Invalid=20718, Unknown=0, NotChecked=0, Total=21170 [2024-11-24 01:39:36,541 INFO L87 Difference]: Start difference. First operand 698 states and 761 transitions. Second operand has 146 states, 146 states have (on average 3.5205479452054793) internal successors, (514), 146 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:39:50,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:39:50,342 INFO L93 Difference]: Finished difference Result 1433 states and 1548 transitions. [2024-11-24 01:39:50,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2024-11-24 01:39:50,343 INFO L78 Accepts]: Start accepts. Automaton has has 146 states, 146 states have (on average 3.5205479452054793) internal successors, (514), 146 states have internal predecessors, (514), 0 states have call successors, (0), 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 175 [2024-11-24 01:39:50,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:39:50,345 INFO L225 Difference]: With dead ends: 1433 [2024-11-24 01:39:50,345 INFO L226 Difference]: Without dead ends: 805 [2024-11-24 01:39:50,348 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 516 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 260 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20296 ImplicationChecksByTransitivity, 16.2s TimeCoverageRelationStatistics Valid=1359, Invalid=67023, Unknown=0, NotChecked=0, Total=68382 [2024-11-24 01:39:50,349 INFO L435 NwaCegarLoop]: 111 mSDtfsCounter, 376 mSDsluCounter, 8216 mSDsCounter, 0 mSdLazyCounter, 11800 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 376 SdHoareTripleChecker+Valid, 8327 SdHoareTripleChecker+Invalid, 11835 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 11800 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:39:50,349 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [376 Valid, 8327 Invalid, 11835 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 11800 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2024-11-24 01:39:50,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2024-11-24 01:39:50,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 714. [2024-11-24 01:39:50,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 714 states, 713 states have (on average 1.0897615708274895) internal successors, (777), 713 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:39:50,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 714 states to 714 states and 777 transitions. [2024-11-24 01:39:50,356 INFO L78 Accepts]: Start accepts. Automaton has 714 states and 777 transitions. Word has length 175 [2024-11-24 01:39:50,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:39:50,356 INFO L471 AbstractCegarLoop]: Abstraction has 714 states and 777 transitions. [2024-11-24 01:39:50,357 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 146 states, 146 states have (on average 3.5205479452054793) internal successors, (514), 146 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:39:50,357 INFO L276 IsEmpty]: Start isEmpty. Operand 714 states and 777 transitions. [2024-11-24 01:39:50,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-11-24 01:39:50,358 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:39:50,358 INFO L218 NwaCegarLoop]: trace histogram [19, 18, 18, 18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:39:50,371 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2024-11-24 01:39:50,558 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2024-11-24 01:39:50,559 INFO L396 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-24 01:39:50,559 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:39:50,559 INFO L85 PathProgramCache]: Analyzing trace with hash -1687087997, now seen corresponding path program 28 times [2024-11-24 01:39:50,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:39:50,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396615716] [2024-11-24 01:39:50,559 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-24 01:39:50,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:39:50,587 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-24 01:39:50,588 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:39:52,310 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 496 proven. 935 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:39:52,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:39:52,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396615716] [2024-11-24 01:39:52,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396615716] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:39:52,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [760691260] [2024-11-24 01:39:52,311 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-24 01:39:52,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:39:52,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:39:52,312 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:39:52,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2024-11-24 01:39:53,050 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-24 01:39:53,050 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:39:53,055 INFO L256 TraceCheckSpWp]: Trace formula consists of 601 conjuncts, 178 conjuncts are in the unsatisfiable core [2024-11-24 01:39:53,058 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:39:53,592 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 561 proven. 870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:39:53,592 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:39:55,305 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-24 01:39:55,614 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 561 proven. 870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:39:55,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [760691260] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:39:55,614 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:39:55,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43, 43] total 68 [2024-11-24 01:39:55,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113743874] [2024-11-24 01:39:55,615 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:39:55,615 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2024-11-24 01:39:55,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:39:55,616 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2024-11-24 01:39:55,616 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=468, Invalid=4224, Unknown=0, NotChecked=0, Total=4692 [2024-11-24 01:39:55,616 INFO L87 Difference]: Start difference. First operand 714 states and 777 transitions. Second operand has 69 states, 68 states have (on average 4.161764705882353) internal successors, (283), 69 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:39:59,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:39:59,602 INFO L93 Difference]: Finished difference Result 887 states and 953 transitions. [2024-11-24 01:39:59,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2024-11-24 01:39:59,603 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 68 states have (on average 4.161764705882353) internal successors, (283), 69 states have internal predecessors, (283), 0 states have call successors, (0), 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 179 [2024-11-24 01:39:59,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:39:59,606 INFO L225 Difference]: With dead ends: 887 [2024-11-24 01:39:59,606 INFO L226 Difference]: Without dead ends: 887 [2024-11-24 01:39:59,607 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 438 GetRequests, 313 SyntacticMatches, 19 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2667 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=1042, Invalid=10514, Unknown=0, NotChecked=0, Total=11556 [2024-11-24 01:39:59,607 INFO L435 NwaCegarLoop]: 121 mSDtfsCounter, 261 mSDsluCounter, 3727 mSDsCounter, 0 mSdLazyCounter, 4442 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 3848 SdHoareTripleChecker+Invalid, 4442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-24 01:39:59,607 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [261 Valid, 3848 Invalid, 4442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4442 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-24 01:39:59,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 887 states. [2024-11-24 01:39:59,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 887 to 734. [2024-11-24 01:39:59,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 734 states, 733 states have (on average 1.0914051841746248) internal successors, (800), 733 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:39:59,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 734 states to 734 states and 800 transitions. [2024-11-24 01:39:59,613 INFO L78 Accepts]: Start accepts. Automaton has 734 states and 800 transitions. Word has length 179 [2024-11-24 01:39:59,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:39:59,613 INFO L471 AbstractCegarLoop]: Abstraction has 734 states and 800 transitions. [2024-11-24 01:39:59,613 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 68 states have (on average 4.161764705882353) internal successors, (283), 69 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:39:59,613 INFO L276 IsEmpty]: Start isEmpty. Operand 734 states and 800 transitions. [2024-11-24 01:39:59,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2024-11-24 01:39:59,614 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:39:59,614 INFO L218 NwaCegarLoop]: trace histogram [20, 19, 19, 19, 19, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:39:59,623 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2024-11-24 01:39:59,814 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2024-11-24 01:39:59,815 INFO L396 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-24 01:39:59,815 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:39:59,815 INFO L85 PathProgramCache]: Analyzing trace with hash -462125745, now seen corresponding path program 29 times [2024-11-24 01:39:59,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:39:59,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202433119] [2024-11-24 01:39:59,815 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-24 01:39:59,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:39:59,880 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 20 check-sat command(s) [2024-11-24 01:39:59,880 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:40:02,182 INFO L134 CoverageAnalysis]: Checked inductivity of 1523 backedges. 38 proven. 1485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:40:02,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:40:02,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202433119] [2024-11-24 01:40:02,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202433119] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:40:02,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [299055841] [2024-11-24 01:40:02,182 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-24 01:40:02,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:40:02,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:40:02,184 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:40:02,185 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2024-11-24 01:40:02,766 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 20 check-sat command(s) [2024-11-24 01:40:02,766 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:40:02,772 INFO L256 TraceCheckSpWp]: Trace formula consists of 692 conjuncts, 210 conjuncts are in the unsatisfiable core [2024-11-24 01:40:02,775 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:40:03,842 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-24 01:40:04,205 INFO L134 CoverageAnalysis]: Checked inductivity of 1523 backedges. 38 proven. 1485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:40:04,205 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:40:04,461 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-24 01:40:04,463 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-24 01:40:04,710 INFO L134 CoverageAnalysis]: Checked inductivity of 1523 backedges. 38 proven. 1485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:40:04,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [299055841] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:40:04,710 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:40:04,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 47, 47] total 77 [2024-11-24 01:40:04,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108685096] [2024-11-24 01:40:04,711 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:40:04,711 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2024-11-24 01:40:04,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:40:04,712 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2024-11-24 01:40:04,712 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=5638, Unknown=0, NotChecked=0, Total=5852 [2024-11-24 01:40:04,712 INFO L87 Difference]: Start difference. First operand 734 states and 800 transitions. Second operand has 77 states, 77 states have (on average 3.6103896103896105) internal successors, (278), 77 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:40:10,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:40:10,251 INFO L93 Difference]: Finished difference Result 1323 states and 1443 transitions. [2024-11-24 01:40:10,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2024-11-24 01:40:10,251 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 77 states have (on average 3.6103896103896105) internal successors, (278), 77 states have internal predecessors, (278), 0 states have call successors, (0), 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 184 [2024-11-24 01:40:10,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:40:10,253 INFO L225 Difference]: With dead ends: 1323 [2024-11-24 01:40:10,253 INFO L226 Difference]: Without dead ends: 762 [2024-11-24 01:40:10,254 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 461 GetRequests, 342 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3220 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=484, Invalid=14036, Unknown=0, NotChecked=0, Total=14520 [2024-11-24 01:40:10,254 INFO L435 NwaCegarLoop]: 140 mSDtfsCounter, 332 mSDsluCounter, 8061 mSDsCounter, 0 mSdLazyCounter, 7322 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 8201 SdHoareTripleChecker+Invalid, 7340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 7322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-11-24 01:40:10,254 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [332 Valid, 8201 Invalid, 7340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 7322 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-11-24 01:40:10,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 762 states. [2024-11-24 01:40:10,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 762 to 750. [2024-11-24 01:40:10,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 750 states, 749 states have (on average 1.089452603471295) internal successors, (816), 749 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:40:10,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 750 states to 750 states and 816 transitions. [2024-11-24 01:40:10,259 INFO L78 Accepts]: Start accepts. Automaton has 750 states and 816 transitions. Word has length 184 [2024-11-24 01:40:10,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:40:10,259 INFO L471 AbstractCegarLoop]: Abstraction has 750 states and 816 transitions. [2024-11-24 01:40:10,260 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 77 states have (on average 3.6103896103896105) internal successors, (278), 77 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:40:10,260 INFO L276 IsEmpty]: Start isEmpty. Operand 750 states and 816 transitions. [2024-11-24 01:40:10,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2024-11-24 01:40:10,261 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:40:10,261 INFO L218 NwaCegarLoop]: trace histogram [20, 19, 19, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:40:10,270 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2024-11-24 01:40:10,461 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:40:10,462 INFO L396 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-24 01:40:10,462 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:40:10,462 INFO L85 PathProgramCache]: Analyzing trace with hash -1210437176, now seen corresponding path program 30 times [2024-11-24 01:40:10,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:40:10,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25596105] [2024-11-24 01:40:10,462 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-24 01:40:10,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:40:10,557 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 20 check-sat command(s) [2024-11-24 01:40:10,557 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:40:13,073 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 561 proven. 1035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:40:13,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:40:13,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25596105] [2024-11-24 01:40:13,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25596105] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:40:13,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1267958335] [2024-11-24 01:40:13,073 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-24 01:40:13,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:40:13,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:40:13,075 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:40:13,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2024-11-24 01:40:14,412 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 20 check-sat command(s) [2024-11-24 01:40:14,412 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:40:14,420 INFO L256 TraceCheckSpWp]: Trace formula consists of 705 conjuncts, 154 conjuncts are in the unsatisfiable core [2024-11-24 01:40:14,423 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:40:14,425 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 [2024-11-24 01:40:15,571 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 630 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:40:15,571 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:40:18,784 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 630 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:40:18,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1267958335] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:40:18,784 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:40:18,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 45, 45] total 120 [2024-11-24 01:40:18,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019273021] [2024-11-24 01:40:18,784 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:40:18,785 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 121 states [2024-11-24 01:40:18,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:40:18,786 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 121 interpolants. [2024-11-24 01:40:18,787 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=2062, Invalid=12458, Unknown=0, NotChecked=0, Total=14520 [2024-11-24 01:40:18,787 INFO L87 Difference]: Start difference. First operand 750 states and 816 transitions. Second operand has 121 states, 120 states have (on average 3.925) internal successors, (471), 121 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:40:22,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:40:22,671 INFO L93 Difference]: Finished difference Result 932 states and 1001 transitions. [2024-11-24 01:40:22,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2024-11-24 01:40:22,672 INFO L78 Accepts]: Start accepts. Automaton has has 121 states, 120 states have (on average 3.925) internal successors, (471), 121 states have internal predecessors, (471), 0 states have call successors, (0), 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 188 [2024-11-24 01:40:22,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:40:22,674 INFO L225 Difference]: With dead ends: 932 [2024-11-24 01:40:22,674 INFO L226 Difference]: Without dead ends: 932 [2024-11-24 01:40:22,675 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 467 GetRequests, 307 SyntacticMatches, 0 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9933 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=3818, Invalid=22264, Unknown=0, NotChecked=0, Total=26082 [2024-11-24 01:40:22,675 INFO L435 NwaCegarLoop]: 39 mSDtfsCounter, 643 mSDsluCounter, 933 mSDsCounter, 0 mSdLazyCounter, 1762 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 643 SdHoareTripleChecker+Valid, 972 SdHoareTripleChecker+Invalid, 1781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1762 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:40:22,675 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [643 Valid, 972 Invalid, 1781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1762 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-24 01:40:22,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 932 states. [2024-11-24 01:40:22,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 932 to 770. [2024-11-24 01:40:22,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 770 states, 769 states have (on average 1.0910273081924577) internal successors, (839), 769 states have internal predecessors, (839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:40:22,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 770 states to 770 states and 839 transitions. [2024-11-24 01:40:22,685 INFO L78 Accepts]: Start accepts. Automaton has 770 states and 839 transitions. Word has length 188 [2024-11-24 01:40:22,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:40:22,686 INFO L471 AbstractCegarLoop]: Abstraction has 770 states and 839 transitions. [2024-11-24 01:40:22,686 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 121 states, 120 states have (on average 3.925) internal successors, (471), 121 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:40:22,686 INFO L276 IsEmpty]: Start isEmpty. Operand 770 states and 839 transitions. [2024-11-24 01:40:22,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2024-11-24 01:40:22,687 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:40:22,687 INFO L218 NwaCegarLoop]: trace histogram [21, 20, 20, 20, 20, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:40:22,698 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2024-11-24 01:40:22,887 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:40:22,888 INFO L396 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-24 01:40:22,888 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:40:22,888 INFO L85 PathProgramCache]: Analyzing trace with hash 334752554, now seen corresponding path program 31 times [2024-11-24 01:40:22,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:40:22,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225634181] [2024-11-24 01:40:22,888 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-24 01:40:22,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:40:22,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:40:25,419 INFO L134 CoverageAnalysis]: Checked inductivity of 1693 backedges. 40 proven. 1653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:40:25,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:40:25,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225634181] [2024-11-24 01:40:25,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225634181] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:40:25,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1772192487] [2024-11-24 01:40:25,419 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-24 01:40:25,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:40:25,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:40:25,421 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:40:25,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2024-11-24 01:40:25,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:40:25,771 INFO L256 TraceCheckSpWp]: Trace formula consists of 723 conjuncts, 244 conjuncts are in the unsatisfiable core [2024-11-24 01:40:25,776 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:40:27,321 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 [2024-11-24 01:40:27,388 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-24 01:40:27,906 INFO L134 CoverageAnalysis]: Checked inductivity of 1693 backedges. 40 proven. 1653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:40:27,906 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:40:28,204 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-24 01:40:28,206 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-24 01:40:29,699 INFO L134 CoverageAnalysis]: Checked inductivity of 1693 backedges. 40 proven. 1653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:40:29,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1772192487] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:40:29,699 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:40:29,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 53, 49] total 104 [2024-11-24 01:40:29,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35189346] [2024-11-24 01:40:29,699 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:40:29,699 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 104 states [2024-11-24 01:40:29,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:40:29,700 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2024-11-24 01:40:29,701 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=318, Invalid=10394, Unknown=0, NotChecked=0, Total=10712 [2024-11-24 01:40:29,701 INFO L87 Difference]: Start difference. First operand 770 states and 839 transitions. Second operand has 104 states, 104 states have (on average 3.5673076923076925) internal successors, (371), 104 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:40:39,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:40:39,052 INFO L93 Difference]: Finished difference Result 1482 states and 1610 transitions. [2024-11-24 01:40:39,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2024-11-24 01:40:39,053 INFO L78 Accepts]: Start accepts. Automaton has has 104 states, 104 states have (on average 3.5673076923076925) internal successors, (371), 104 states have internal predecessors, (371), 0 states have call successors, (0), 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 193 [2024-11-24 01:40:39,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:40:39,055 INFO L225 Difference]: With dead ends: 1482 [2024-11-24 01:40:39,055 INFO L226 Difference]: Without dead ends: 885 [2024-11-24 01:40:39,057 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 527 GetRequests, 334 SyntacticMatches, 0 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8781 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=1052, Invalid=36778, Unknown=0, NotChecked=0, Total=37830 [2024-11-24 01:40:39,057 INFO L435 NwaCegarLoop]: 142 mSDtfsCounter, 425 mSDsluCounter, 7707 mSDsCounter, 0 mSdLazyCounter, 8170 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 425 SdHoareTripleChecker+Valid, 7849 SdHoareTripleChecker+Invalid, 8208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 8170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:40:39,057 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [425 Valid, 7849 Invalid, 8208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 8170 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2024-11-24 01:40:39,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 885 states. [2024-11-24 01:40:39,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 885 to 786. [2024-11-24 01:40:39,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 786 states, 785 states have (on average 1.089171974522293) internal successors, (855), 785 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:40:39,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 786 states to 786 states and 855 transitions. [2024-11-24 01:40:39,062 INFO L78 Accepts]: Start accepts. Automaton has 786 states and 855 transitions. Word has length 193 [2024-11-24 01:40:39,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:40:39,062 INFO L471 AbstractCegarLoop]: Abstraction has 786 states and 855 transitions. [2024-11-24 01:40:39,063 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 104 states, 104 states have (on average 3.5673076923076925) internal successors, (371), 104 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:40:39,063 INFO L276 IsEmpty]: Start isEmpty. Operand 786 states and 855 transitions. [2024-11-24 01:40:39,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2024-11-24 01:40:39,063 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:40:39,064 INFO L218 NwaCegarLoop]: trace histogram [21, 20, 20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:40:39,071 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2024-11-24 01:40:39,264 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:40:39,264 INFO L396 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-24 01:40:39,264 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:40:39,264 INFO L85 PathProgramCache]: Analyzing trace with hash 283522769, now seen corresponding path program 32 times [2024-11-24 01:40:39,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:40:39,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231456781] [2024-11-24 01:40:39,265 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 01:40:39,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:40:39,296 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 01:40:39,296 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:40:42,406 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 630 proven. 1140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:40:42,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:40:42,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231456781] [2024-11-24 01:40:42,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231456781] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:40:42,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [998250416] [2024-11-24 01:40:42,406 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 01:40:42,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:40:42,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:40:42,408 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:40:42,409 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2024-11-24 01:40:42,731 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 01:40:42,731 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:40:42,736 INFO L256 TraceCheckSpWp]: Trace formula consists of 736 conjuncts, 198 conjuncts are in the unsatisfiable core [2024-11-24 01:40:42,739 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:40:44,432 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 703 proven. 1067 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:40:44,432 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:40:46,660 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-24 01:40:47,845 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 703 proven. 1067 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:40:47,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [998250416] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:40:47,845 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:40:47,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 47, 47] total 99 [2024-11-24 01:40:47,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795076331] [2024-11-24 01:40:47,846 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:40:47,846 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 100 states [2024-11-24 01:40:47,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:40:47,847 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2024-11-24 01:40:47,848 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1058, Invalid=8842, Unknown=0, NotChecked=0, Total=9900 [2024-11-24 01:40:47,849 INFO L87 Difference]: Start difference. First operand 786 states and 855 transitions. Second operand has 100 states, 99 states have (on average 4.03030303030303) internal successors, (399), 100 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:40:53,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:40:53,736 INFO L93 Difference]: Finished difference Result 977 states and 1049 transitions. [2024-11-24 01:40:53,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2024-11-24 01:40:53,737 INFO L78 Accepts]: Start accepts. Automaton has has 100 states, 99 states have (on average 4.03030303030303) internal successors, (399), 100 states have internal predecessors, (399), 0 states have call successors, (0), 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 197 [2024-11-24 01:40:53,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:40:53,739 INFO L225 Difference]: With dead ends: 977 [2024-11-24 01:40:53,739 INFO L226 Difference]: Without dead ends: 977 [2024-11-24 01:40:53,740 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 484 GetRequests, 322 SyntacticMatches, 21 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7930 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=1843, Invalid=18463, Unknown=0, NotChecked=0, Total=20306 [2024-11-24 01:40:53,740 INFO L435 NwaCegarLoop]: 131 mSDtfsCounter, 613 mSDsluCounter, 4281 mSDsCounter, 0 mSdLazyCounter, 5312 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 613 SdHoareTripleChecker+Valid, 4412 SdHoareTripleChecker+Invalid, 5312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-11-24 01:40:53,740 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [613 Valid, 4412 Invalid, 5312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5312 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-11-24 01:40:53,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 977 states. [2024-11-24 01:40:53,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 977 to 806. [2024-11-24 01:40:53,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 806 states, 805 states have (on average 1.0906832298136646) internal successors, (878), 805 states have internal predecessors, (878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:40:53,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 878 transitions. [2024-11-24 01:40:53,752 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 878 transitions. Word has length 197 [2024-11-24 01:40:53,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:40:53,752 INFO L471 AbstractCegarLoop]: Abstraction has 806 states and 878 transitions. [2024-11-24 01:40:53,753 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 100 states, 99 states have (on average 4.03030303030303) internal successors, (399), 100 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:40:53,753 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 878 transitions. [2024-11-24 01:40:53,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2024-11-24 01:40:53,754 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:40:53,754 INFO L218 NwaCegarLoop]: trace histogram [22, 21, 21, 21, 21, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:40:53,763 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2024-11-24 01:40:53,954 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:40:53,954 INFO L396 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-24 01:40:53,955 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:40:53,955 INFO L85 PathProgramCache]: Analyzing trace with hash 436118465, now seen corresponding path program 33 times [2024-11-24 01:40:53,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:40:53,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489169677] [2024-11-24 01:40:53,955 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-24 01:40:53,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:40:54,065 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2024-11-24 01:40:54,066 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:40:57,121 INFO L134 CoverageAnalysis]: Checked inductivity of 1872 backedges. 42 proven. 1830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:40:57,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:40:57,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489169677] [2024-11-24 01:40:57,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489169677] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:40:57,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2108236565] [2024-11-24 01:40:57,122 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-24 01:40:57,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:40:57,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:40:57,124 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:40:57,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38b05301-bd43-4890-b12c-b34f035e49af/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2024-11-24 01:40:59,369 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2024-11-24 01:40:59,369 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:40:59,376 INFO L256 TraceCheckSpWp]: Trace formula consists of 754 conjuncts, 203 conjuncts are in the unsatisfiable core [2024-11-24 01:40:59,381 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:41:01,244 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 [2024-11-24 01:41:01,326 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2024-11-24 01:41:22,362 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-24 01:41:22,363 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 20 treesize of output 17 [2024-11-24 01:41:22,896 INFO L134 CoverageAnalysis]: Checked inductivity of 1872 backedges. 703 proven. 1169 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:41:22,896 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:41:30,399 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 17 [2024-11-24 01:41:30,404 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 28 [2024-11-24 01:41:30,408 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 13 treesize of output 9 [2024-11-24 01:41:30,551 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 11 [2024-11-24 01:41:30,553 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2024-11-24 01:41:33,655 INFO L134 CoverageAnalysis]: Checked inductivity of 1872 backedges. 703 proven. 1169 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:41:33,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2108236565] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:41:33,655 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:41:33,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 55, 54] total 163 [2024-11-24 01:41:33,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73521684] [2024-11-24 01:41:33,655 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:41:33,656 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 163 states [2024-11-24 01:41:33,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:41:33,657 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 163 interpolants. [2024-11-24 01:41:33,658 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1843, Invalid=24562, Unknown=1, NotChecked=0, Total=26406 [2024-11-24 01:41:33,658 INFO L87 Difference]: Start difference. First operand 806 states and 878 transitions. Second operand has 163 states, 163 states have (on average 3.6809815950920246) internal successors, (600), 163 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:41:42,464 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#length| |c_ULTIMATE.start_cstrcspn_~spanp~0#1.base|))) (and (or (and (<= 0 |c_ULTIMATE.start_cstrcspn_~spanp~0#1.offset|) (<= (+ |c_ULTIMATE.start_cstrcspn_~spanp~0#1.offset| 1) .cse0)) (= |c_ULTIMATE.start_cstrcspn_#t~mem5#1| |c_ULTIMATE.start_cstrcspn_~c~0#1|)) (forall ((|v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980| Int)) (or (= (select (select |c_#memory_int#1| |c_ULTIMATE.start_cstrcspn_~spanp~0#1.base|) (+ (- 1) |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980|)) |c_ULTIMATE.start_cstrcspn_~c~0#1|) (< |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980| 1) (< |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980| .cse0) (< (+ |c_ULTIMATE.start_cstrcspn_~spanp~0#1.offset| 20) |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980|))))) is different from false [2024-11-24 01:41:43,070 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#length| |c_ULTIMATE.start_cstrcspn_~spanp~0#1.base|))) (and (or (= |c_ULTIMATE.start_cstrcspn_~sc~0#1| |c_ULTIMATE.start_cstrcspn_~c~0#1|) (and (<= 0 |c_ULTIMATE.start_cstrcspn_~spanp~0#1.offset|) (<= (+ |c_ULTIMATE.start_cstrcspn_~spanp~0#1.offset| 1) .cse0))) (forall ((|v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980| Int)) (or (= (select (select |c_#memory_int#1| |c_ULTIMATE.start_cstrcspn_~spanp~0#1.base|) (+ (- 1) |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980|)) |c_ULTIMATE.start_cstrcspn_~c~0#1|) (< |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980| 1) (< |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980| .cse0) (< (+ |c_ULTIMATE.start_cstrcspn_~spanp~0#1.offset| 20) |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980|))))) is different from false [2024-11-24 01:41:43,425 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#length| |c_ULTIMATE.start_cstrcspn_~spanp~0#1.base|))) (and (<= 0 |c_ULTIMATE.start_cstrcspn_~spanp~0#1.offset|) (<= (+ |c_ULTIMATE.start_cstrcspn_~spanp~0#1.offset| 1) .cse0) (forall ((|v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980| Int)) (or (= (select (select |c_#memory_int#1| |c_ULTIMATE.start_cstrcspn_~spanp~0#1.base|) (+ (- 1) |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980|)) |c_ULTIMATE.start_cstrcspn_~c~0#1|) (< |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980| 1) (< |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980| .cse0) (< (+ |c_ULTIMATE.start_cstrcspn_~spanp~0#1.offset| 20) |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980|))))) is different from false [2024-11-24 01:41:48,536 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#length| |c_ULTIMATE.start_cstrcspn_~spanp~0#1.base|))) (and (forall ((|v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980| Int)) (or (< (+ 19 |c_ULTIMATE.start_cstrcspn_~spanp~0#1.offset|) |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980|) (= (select (select |c_#memory_int#1| |c_ULTIMATE.start_cstrcspn_~spanp~0#1.base|) (+ (- 1) |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980|)) |c_ULTIMATE.start_cstrcspn_~c~0#1|) (< |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980| 1) (< |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980| .cse0))) (or (and (<= 0 |c_ULTIMATE.start_cstrcspn_~spanp~0#1.offset|) (<= (+ |c_ULTIMATE.start_cstrcspn_~spanp~0#1.offset| 1) .cse0)) (= |c_ULTIMATE.start_cstrcspn_#t~mem5#1| |c_ULTIMATE.start_cstrcspn_~c~0#1|)))) is different from false [2024-11-24 01:41:49,171 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#length| |c_ULTIMATE.start_cstrcspn_~spanp~0#1.base|))) (and (forall ((|v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980| Int)) (or (< (+ 19 |c_ULTIMATE.start_cstrcspn_~spanp~0#1.offset|) |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980|) (= (select (select |c_#memory_int#1| |c_ULTIMATE.start_cstrcspn_~spanp~0#1.base|) (+ (- 1) |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980|)) |c_ULTIMATE.start_cstrcspn_~c~0#1|) (< |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980| 1) (< |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980| .cse0))) (or (= |c_ULTIMATE.start_cstrcspn_~sc~0#1| |c_ULTIMATE.start_cstrcspn_~c~0#1|) (and (<= 0 |c_ULTIMATE.start_cstrcspn_~spanp~0#1.offset|) (<= (+ |c_ULTIMATE.start_cstrcspn_~spanp~0#1.offset| 1) .cse0))))) is different from false [2024-11-24 01:41:49,532 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#length| |c_ULTIMATE.start_cstrcspn_~spanp~0#1.base|))) (and (<= 0 |c_ULTIMATE.start_cstrcspn_~spanp~0#1.offset|) (forall ((|v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980| Int)) (or (< (+ 19 |c_ULTIMATE.start_cstrcspn_~spanp~0#1.offset|) |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980|) (= (select (select |c_#memory_int#1| |c_ULTIMATE.start_cstrcspn_~spanp~0#1.base|) (+ (- 1) |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980|)) |c_ULTIMATE.start_cstrcspn_~c~0#1|) (< |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980| 1) (< |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980| .cse0))) (<= (+ |c_ULTIMATE.start_cstrcspn_~spanp~0#1.offset| 1) .cse0))) is different from false [2024-11-24 01:41:52,180 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#length| |c_ULTIMATE.start_cstrcspn_~spanp~0#1.base|))) (and (forall ((|v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980| Int)) (or (= (select (select |c_#memory_int#1| |c_ULTIMATE.start_cstrcspn_~spanp~0#1.base|) (+ (- 1) |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980|)) |c_ULTIMATE.start_cstrcspn_~c~0#1|) (< |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980| 1) (< |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980| .cse0) (< (+ |c_ULTIMATE.start_cstrcspn_~spanp~0#1.offset| 18) |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980|))) (or (and (<= 0 |c_ULTIMATE.start_cstrcspn_~spanp~0#1.offset|) (<= (+ |c_ULTIMATE.start_cstrcspn_~spanp~0#1.offset| 1) .cse0)) (= |c_ULTIMATE.start_cstrcspn_#t~mem5#1| |c_ULTIMATE.start_cstrcspn_~c~0#1|)))) is different from false [2024-11-24 01:41:52,877 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#length| |c_ULTIMATE.start_cstrcspn_~spanp~0#1.base|))) (and (forall ((|v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980| Int)) (or (= (select (select |c_#memory_int#1| |c_ULTIMATE.start_cstrcspn_~spanp~0#1.base|) (+ (- 1) |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980|)) |c_ULTIMATE.start_cstrcspn_~c~0#1|) (< |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980| 1) (< |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980| .cse0) (< (+ |c_ULTIMATE.start_cstrcspn_~spanp~0#1.offset| 18) |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980|))) (or (= |c_ULTIMATE.start_cstrcspn_~sc~0#1| |c_ULTIMATE.start_cstrcspn_~c~0#1|) (and (<= 0 |c_ULTIMATE.start_cstrcspn_~spanp~0#1.offset|) (<= (+ |c_ULTIMATE.start_cstrcspn_~spanp~0#1.offset| 1) .cse0))))) is different from false [2024-11-24 01:41:53,244 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#length| |c_ULTIMATE.start_cstrcspn_~spanp~0#1.base|))) (and (<= 0 |c_ULTIMATE.start_cstrcspn_~spanp~0#1.offset|) (forall ((|v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980| Int)) (or (= (select (select |c_#memory_int#1| |c_ULTIMATE.start_cstrcspn_~spanp~0#1.base|) (+ (- 1) |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980|)) |c_ULTIMATE.start_cstrcspn_~c~0#1|) (< |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980| 1) (< |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980| .cse0) (< (+ |c_ULTIMATE.start_cstrcspn_~spanp~0#1.offset| 18) |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980|))) (<= (+ |c_ULTIMATE.start_cstrcspn_~spanp~0#1.offset| 1) .cse0))) is different from false [2024-11-24 01:41:54,029 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#length| |c_ULTIMATE.start_cstrcspn_~spanp~0#1.base|))) (and (or (< |c_ULTIMATE.start_cstrcspn_#t~post4#1.offset| 0) (= (select (select |c_#memory_int#1| |c_ULTIMATE.start_cstrcspn_#t~post4#1.base|) |c_ULTIMATE.start_cstrcspn_#t~post4#1.offset|) |c_ULTIMATE.start_cstrcspn_~c~0#1|) (and (<= 0 |c_ULTIMATE.start_cstrcspn_~spanp~0#1.offset|) (<= (+ |c_ULTIMATE.start_cstrcspn_~spanp~0#1.offset| 1) .cse0))) (<= 0 |c_ULTIMATE.start_cstrcspn_#t~post4#1.offset|) (forall ((|v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980| Int)) (or (= (select (select |c_#memory_int#1| |c_ULTIMATE.start_cstrcspn_~spanp~0#1.base|) (+ (- 1) |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980|)) |c_ULTIMATE.start_cstrcspn_~c~0#1|) (< |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980| 1) (< |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980| .cse0) (< (+ |c_ULTIMATE.start_cstrcspn_~spanp~0#1.offset| 17) |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980|))) (<= (+ |c_ULTIMATE.start_cstrcspn_#t~post4#1.offset| 1) (select |c_#length| |c_ULTIMATE.start_cstrcspn_#t~post4#1.base|)))) is different from false [2024-11-24 01:41:58,830 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#length| |c_ULTIMATE.start_cstrcspn_~spanp~0#1.base|))) (and (forall ((|v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980| Int)) (or (= (select (select |c_#memory_int#1| |c_ULTIMATE.start_cstrcspn_~spanp~0#1.base|) (+ (- 1) |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980|)) |c_ULTIMATE.start_cstrcspn_~c~0#1|) (< |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980| 1) (< |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980| .cse0) (< (+ |c_ULTIMATE.start_cstrcspn_~spanp~0#1.offset| 17) |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980|))) (or (and (<= 0 |c_ULTIMATE.start_cstrcspn_~spanp~0#1.offset|) (<= (+ |c_ULTIMATE.start_cstrcspn_~spanp~0#1.offset| 1) .cse0)) (= |c_ULTIMATE.start_cstrcspn_#t~mem5#1| |c_ULTIMATE.start_cstrcspn_~c~0#1|)))) is different from false [2024-11-24 01:41:59,528 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#length| |c_ULTIMATE.start_cstrcspn_~spanp~0#1.base|))) (and (forall ((|v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980| Int)) (or (= (select (select |c_#memory_int#1| |c_ULTIMATE.start_cstrcspn_~spanp~0#1.base|) (+ (- 1) |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980|)) |c_ULTIMATE.start_cstrcspn_~c~0#1|) (< |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980| 1) (< |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980| .cse0) (< (+ |c_ULTIMATE.start_cstrcspn_~spanp~0#1.offset| 17) |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980|))) (or (= |c_ULTIMATE.start_cstrcspn_~sc~0#1| |c_ULTIMATE.start_cstrcspn_~c~0#1|) (and (<= 0 |c_ULTIMATE.start_cstrcspn_~spanp~0#1.offset|) (<= (+ |c_ULTIMATE.start_cstrcspn_~spanp~0#1.offset| 1) .cse0))))) is different from false [2024-11-24 01:41:59,901 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#length| |c_ULTIMATE.start_cstrcspn_~spanp~0#1.base|))) (and (<= 0 |c_ULTIMATE.start_cstrcspn_~spanp~0#1.offset|) (forall ((|v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980| Int)) (or (= (select (select |c_#memory_int#1| |c_ULTIMATE.start_cstrcspn_~spanp~0#1.base|) (+ (- 1) |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980|)) |c_ULTIMATE.start_cstrcspn_~c~0#1|) (< |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980| 1) (< |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980| .cse0) (< (+ |c_ULTIMATE.start_cstrcspn_~spanp~0#1.offset| 17) |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980|))) (<= (+ |c_ULTIMATE.start_cstrcspn_~spanp~0#1.offset| 1) .cse0))) is different from false [2024-11-24 01:42:19,185 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#length| |c_ULTIMATE.start_cstrcspn_~spanp~0#1.base|))) (and (forall ((|v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980| Int)) (or (= (select (select |c_#memory_int#1| |c_ULTIMATE.start_cstrcspn_~spanp~0#1.base|) (+ (- 1) |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980|)) |c_ULTIMATE.start_cstrcspn_~c~0#1|) (< |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980| 1) (< |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980| .cse0) (< (+ |c_ULTIMATE.start_cstrcspn_~spanp~0#1.offset| 16) |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980|))) (or (= |c_ULTIMATE.start_cstrcspn_~sc~0#1| |c_ULTIMATE.start_cstrcspn_~c~0#1|) (and (<= 0 |c_ULTIMATE.start_cstrcspn_~spanp~0#1.offset|) (<= (+ |c_ULTIMATE.start_cstrcspn_~spanp~0#1.offset| 1) .cse0))))) is different from false [2024-11-24 01:42:19,569 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#length| |c_ULTIMATE.start_cstrcspn_~spanp~0#1.base|))) (and (<= 0 |c_ULTIMATE.start_cstrcspn_~spanp~0#1.offset|) (forall ((|v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980| Int)) (or (= (select (select |c_#memory_int#1| |c_ULTIMATE.start_cstrcspn_~spanp~0#1.base|) (+ (- 1) |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980|)) |c_ULTIMATE.start_cstrcspn_~c~0#1|) (< |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980| 1) (< |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980| .cse0) (< (+ |c_ULTIMATE.start_cstrcspn_~spanp~0#1.offset| 16) |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980|))) (<= (+ |c_ULTIMATE.start_cstrcspn_~spanp~0#1.offset| 1) .cse0))) is different from false [2024-11-24 01:42:20,769 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:42:40,082 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#length| |c_ULTIMATE.start_cstrcspn_~spanp~0#1.base|))) (and (forall ((|v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980| Int)) (or (= (select (select |c_#memory_int#1| |c_ULTIMATE.start_cstrcspn_~spanp~0#1.base|) (+ (- 1) |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980|)) |c_ULTIMATE.start_cstrcspn_~c~0#1|) (< |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980| 1) (< (+ |c_ULTIMATE.start_cstrcspn_~spanp~0#1.offset| 15) |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980|) (< |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980| .cse0))) (or (and (<= 0 |c_ULTIMATE.start_cstrcspn_~spanp~0#1.offset|) (<= (+ |c_ULTIMATE.start_cstrcspn_~spanp~0#1.offset| 1) .cse0)) (= |c_ULTIMATE.start_cstrcspn_#t~mem5#1| |c_ULTIMATE.start_cstrcspn_~c~0#1|)))) is different from false [2024-11-24 01:42:41,011 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#length| |c_ULTIMATE.start_cstrcspn_~spanp~0#1.base|))) (and (forall ((|v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980| Int)) (or (= (select (select |c_#memory_int#1| |c_ULTIMATE.start_cstrcspn_~spanp~0#1.base|) (+ (- 1) |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980|)) |c_ULTIMATE.start_cstrcspn_~c~0#1|) (< |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980| 1) (< (+ |c_ULTIMATE.start_cstrcspn_~spanp~0#1.offset| 15) |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980|) (< |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980| .cse0))) (or (= |c_ULTIMATE.start_cstrcspn_~sc~0#1| |c_ULTIMATE.start_cstrcspn_~c~0#1|) (and (<= 0 |c_ULTIMATE.start_cstrcspn_~spanp~0#1.offset|) (<= (+ |c_ULTIMATE.start_cstrcspn_~spanp~0#1.offset| 1) .cse0))))) is different from false [2024-11-24 01:42:41,593 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#length| |c_ULTIMATE.start_cstrcspn_~spanp~0#1.base|))) (and (forall ((|v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980| Int)) (or (= (select (select |c_#memory_int#1| |c_ULTIMATE.start_cstrcspn_~spanp~0#1.base|) (+ (- 1) |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980|)) |c_ULTIMATE.start_cstrcspn_~c~0#1|) (< |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980| 1) (< (+ |c_ULTIMATE.start_cstrcspn_~spanp~0#1.offset| 15) |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980|) (< |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980| .cse0))) (<= 0 |c_ULTIMATE.start_cstrcspn_~spanp~0#1.offset|) (<= (+ |c_ULTIMATE.start_cstrcspn_~spanp~0#1.offset| 1) .cse0))) is different from false [2024-11-24 01:43:15,259 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#length| |c_ULTIMATE.start_cstrcspn_~spanp~0#1.base|))) (and (forall ((|v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980| Int)) (or (= (select (select |c_#memory_int#1| |c_ULTIMATE.start_cstrcspn_~spanp~0#1.base|) (+ (- 1) |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980|)) |c_ULTIMATE.start_cstrcspn_~c~0#1|) (< |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980| 1) (< (+ |c_ULTIMATE.start_cstrcspn_~spanp~0#1.offset| 14) |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980|) (< |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980| .cse0))) (or (and (<= 0 |c_ULTIMATE.start_cstrcspn_~spanp~0#1.offset|) (<= (+ |c_ULTIMATE.start_cstrcspn_~spanp~0#1.offset| 1) .cse0)) (= |c_ULTIMATE.start_cstrcspn_#t~mem5#1| |c_ULTIMATE.start_cstrcspn_~c~0#1|)))) is different from false [2024-11-24 01:43:16,222 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#length| |c_ULTIMATE.start_cstrcspn_~spanp~0#1.base|))) (and (forall ((|v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980| Int)) (or (= (select (select |c_#memory_int#1| |c_ULTIMATE.start_cstrcspn_~spanp~0#1.base|) (+ (- 1) |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980|)) |c_ULTIMATE.start_cstrcspn_~c~0#1|) (< |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980| 1) (< (+ |c_ULTIMATE.start_cstrcspn_~spanp~0#1.offset| 14) |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980|) (< |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980| .cse0))) (or (= |c_ULTIMATE.start_cstrcspn_~sc~0#1| |c_ULTIMATE.start_cstrcspn_~c~0#1|) (and (<= 0 |c_ULTIMATE.start_cstrcspn_~spanp~0#1.offset|) (<= (+ |c_ULTIMATE.start_cstrcspn_~spanp~0#1.offset| 1) .cse0))))) is different from false [2024-11-24 01:43:16,907 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#length| |c_ULTIMATE.start_cstrcspn_~spanp~0#1.base|))) (and (<= 0 |c_ULTIMATE.start_cstrcspn_~spanp~0#1.offset|) (forall ((|v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980| Int)) (or (= (select (select |c_#memory_int#1| |c_ULTIMATE.start_cstrcspn_~spanp~0#1.base|) (+ (- 1) |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980|)) |c_ULTIMATE.start_cstrcspn_~c~0#1|) (< |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980| 1) (< (+ |c_ULTIMATE.start_cstrcspn_~spanp~0#1.offset| 14) |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980|) (< |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980| .cse0))) (<= (+ |c_ULTIMATE.start_cstrcspn_~spanp~0#1.offset| 1) .cse0))) is different from false [2024-11-24 01:43:26,851 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#length| |c_ULTIMATE.start_cstrcspn_~spanp~0#1.base|))) (and (or (< |c_ULTIMATE.start_cstrcspn_#t~post4#1.offset| 0) (= (select (select |c_#memory_int#1| |c_ULTIMATE.start_cstrcspn_#t~post4#1.base|) |c_ULTIMATE.start_cstrcspn_#t~post4#1.offset|) |c_ULTIMATE.start_cstrcspn_~c~0#1|) (and (<= 0 |c_ULTIMATE.start_cstrcspn_~spanp~0#1.offset|) (<= (+ |c_ULTIMATE.start_cstrcspn_~spanp~0#1.offset| 1) .cse0))) (<= 0 |c_ULTIMATE.start_cstrcspn_#t~post4#1.offset|) (forall ((|v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980| Int)) (or (= (select (select |c_#memory_int#1| |c_ULTIMATE.start_cstrcspn_~spanp~0#1.base|) (+ (- 1) |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980|)) |c_ULTIMATE.start_cstrcspn_~c~0#1|) (< |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980| 1) (< |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980| .cse0) (< (+ |c_ULTIMATE.start_cstrcspn_~spanp~0#1.offset| 13) |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980|))) (<= (+ |c_ULTIMATE.start_cstrcspn_#t~post4#1.offset| 1) (select |c_#length| |c_ULTIMATE.start_cstrcspn_#t~post4#1.base|)))) is different from false [2024-11-24 01:43:36,035 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#length| |c_ULTIMATE.start_cstrcspn_~spanp~0#1.base|))) (and (forall ((|v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980| Int)) (or (= (select (select |c_#memory_int#1| |c_ULTIMATE.start_cstrcspn_~spanp~0#1.base|) (+ (- 1) |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980|)) |c_ULTIMATE.start_cstrcspn_~c~0#1|) (< |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980| 1) (< |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980| .cse0) (< (+ |c_ULTIMATE.start_cstrcspn_~spanp~0#1.offset| 13) |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980|))) (or (and (<= 0 |c_ULTIMATE.start_cstrcspn_~spanp~0#1.offset|) (<= (+ |c_ULTIMATE.start_cstrcspn_~spanp~0#1.offset| 1) .cse0)) (= |c_ULTIMATE.start_cstrcspn_#t~mem5#1| |c_ULTIMATE.start_cstrcspn_~c~0#1|)))) is different from false [2024-11-24 01:43:36,974 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#length| |c_ULTIMATE.start_cstrcspn_~spanp~0#1.base|))) (and (forall ((|v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980| Int)) (or (= (select (select |c_#memory_int#1| |c_ULTIMATE.start_cstrcspn_~spanp~0#1.base|) (+ (- 1) |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980|)) |c_ULTIMATE.start_cstrcspn_~c~0#1|) (< |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980| 1) (< |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980| .cse0) (< (+ |c_ULTIMATE.start_cstrcspn_~spanp~0#1.offset| 13) |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980|))) (or (= |c_ULTIMATE.start_cstrcspn_~sc~0#1| |c_ULTIMATE.start_cstrcspn_~c~0#1|) (and (<= 0 |c_ULTIMATE.start_cstrcspn_~spanp~0#1.offset|) (<= (+ |c_ULTIMATE.start_cstrcspn_~spanp~0#1.offset| 1) .cse0))))) is different from false [2024-11-24 01:43:37,542 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#length| |c_ULTIMATE.start_cstrcspn_~spanp~0#1.base|))) (and (<= 0 |c_ULTIMATE.start_cstrcspn_~spanp~0#1.offset|) (forall ((|v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980| Int)) (or (= (select (select |c_#memory_int#1| |c_ULTIMATE.start_cstrcspn_~spanp~0#1.base|) (+ (- 1) |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980|)) |c_ULTIMATE.start_cstrcspn_~c~0#1|) (< |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980| 1) (< |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980| .cse0) (< (+ |c_ULTIMATE.start_cstrcspn_~spanp~0#1.offset| 13) |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980|))) (<= (+ |c_ULTIMATE.start_cstrcspn_~spanp~0#1.offset| 1) .cse0))) is different from false [2024-11-24 01:44:29,441 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:44:31,199 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#length| |c_ULTIMATE.start_cstrcspn_~spanp~0#1.base|))) (and (<= 0 |c_ULTIMATE.start_cstrcspn_~spanp~0#1.offset|) (<= (+ |c_ULTIMATE.start_cstrcspn_~spanp~0#1.offset| 1) .cse0) (forall ((|v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980| Int)) (or (= (select (select |c_#memory_int#1| |c_ULTIMATE.start_cstrcspn_~spanp~0#1.base|) (+ (- 1) |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980|)) |c_ULTIMATE.start_cstrcspn_~c~0#1|) (< |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980| 1) (< |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980| .cse0) (< (+ |c_ULTIMATE.start_cstrcspn_~spanp~0#1.offset| 12) |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980|))))) is different from false [2024-11-24 01:45:06,668 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#length| |c_ULTIMATE.start_cstrcspn_~spanp~0#1.base|))) (and (forall ((|v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980| Int)) (or (= (select (select |c_#memory_int#1| |c_ULTIMATE.start_cstrcspn_~spanp~0#1.base|) (+ (- 1) |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980|)) |c_ULTIMATE.start_cstrcspn_~c~0#1|) (< (+ |c_ULTIMATE.start_cstrcspn_~spanp~0#1.offset| 11) |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980|) (< |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980| 1) (< |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980| .cse0))) (or (and (<= 0 |c_ULTIMATE.start_cstrcspn_~spanp~0#1.offset|) (<= (+ |c_ULTIMATE.start_cstrcspn_~spanp~0#1.offset| 1) .cse0)) (= |c_ULTIMATE.start_cstrcspn_#t~mem5#1| |c_ULTIMATE.start_cstrcspn_~c~0#1|)))) is different from false [2024-11-24 01:45:07,655 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#length| |c_ULTIMATE.start_cstrcspn_~spanp~0#1.base|))) (and (forall ((|v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980| Int)) (or (= (select (select |c_#memory_int#1| |c_ULTIMATE.start_cstrcspn_~spanp~0#1.base|) (+ (- 1) |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980|)) |c_ULTIMATE.start_cstrcspn_~c~0#1|) (< (+ |c_ULTIMATE.start_cstrcspn_~spanp~0#1.offset| 11) |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980|) (< |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980| 1) (< |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980| .cse0))) (or (= |c_ULTIMATE.start_cstrcspn_~sc~0#1| |c_ULTIMATE.start_cstrcspn_~c~0#1|) (and (<= 0 |c_ULTIMATE.start_cstrcspn_~spanp~0#1.offset|) (<= (+ |c_ULTIMATE.start_cstrcspn_~spanp~0#1.offset| 1) .cse0))))) is different from false [2024-11-24 01:45:08,145 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#length| |c_ULTIMATE.start_cstrcspn_~spanp~0#1.base|))) (and (forall ((|v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980| Int)) (or (= (select (select |c_#memory_int#1| |c_ULTIMATE.start_cstrcspn_~spanp~0#1.base|) (+ (- 1) |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980|)) |c_ULTIMATE.start_cstrcspn_~c~0#1|) (< (+ |c_ULTIMATE.start_cstrcspn_~spanp~0#1.offset| 11) |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980|) (< |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980| 1) (< |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980| .cse0))) (<= 0 |c_ULTIMATE.start_cstrcspn_~spanp~0#1.offset|) (<= (+ |c_ULTIMATE.start_cstrcspn_~spanp~0#1.offset| 1) .cse0))) is different from false [2024-11-24 01:45:42,258 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#length| |c_ULTIMATE.start_cstrcspn_~spanp~0#1.base|))) (and (forall ((|v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980| Int)) (or (= (select (select |c_#memory_int#1| |c_ULTIMATE.start_cstrcspn_~spanp~0#1.base|) (+ (- 1) |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980|)) |c_ULTIMATE.start_cstrcspn_~c~0#1|) (< |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980| 1) (< |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980| .cse0) (< (+ |c_ULTIMATE.start_cstrcspn_~spanp~0#1.offset| 10) |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980|))) (or (and (<= 0 |c_ULTIMATE.start_cstrcspn_~spanp~0#1.offset|) (<= (+ |c_ULTIMATE.start_cstrcspn_~spanp~0#1.offset| 1) .cse0)) (= |c_ULTIMATE.start_cstrcspn_#t~mem5#1| |c_ULTIMATE.start_cstrcspn_~c~0#1|)))) is different from false [2024-11-24 01:45:43,209 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#length| |c_ULTIMATE.start_cstrcspn_~spanp~0#1.base|))) (and (forall ((|v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980| Int)) (or (= (select (select |c_#memory_int#1| |c_ULTIMATE.start_cstrcspn_~spanp~0#1.base|) (+ (- 1) |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980|)) |c_ULTIMATE.start_cstrcspn_~c~0#1|) (< |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980| 1) (< |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980| .cse0) (< (+ |c_ULTIMATE.start_cstrcspn_~spanp~0#1.offset| 10) |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980|))) (or (= |c_ULTIMATE.start_cstrcspn_~sc~0#1| |c_ULTIMATE.start_cstrcspn_~c~0#1|) (and (<= 0 |c_ULTIMATE.start_cstrcspn_~spanp~0#1.offset|) (<= (+ |c_ULTIMATE.start_cstrcspn_~spanp~0#1.offset| 1) .cse0))))) is different from false [2024-11-24 01:45:43,851 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#length| |c_ULTIMATE.start_cstrcspn_~spanp~0#1.base|))) (and (<= 0 |c_ULTIMATE.start_cstrcspn_~spanp~0#1.offset|) (forall ((|v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980| Int)) (or (= (select (select |c_#memory_int#1| |c_ULTIMATE.start_cstrcspn_~spanp~0#1.base|) (+ (- 1) |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980|)) |c_ULTIMATE.start_cstrcspn_~c~0#1|) (< |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980| 1) (< |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980| .cse0) (< (+ |c_ULTIMATE.start_cstrcspn_~spanp~0#1.offset| 10) |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980|))) (<= (+ |c_ULTIMATE.start_cstrcspn_~spanp~0#1.offset| 1) .cse0))) is different from false [2024-11-24 01:46:00,417 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#length| |c_ULTIMATE.start_cstrcspn_~spanp~0#1.base|))) (and (or (< |c_ULTIMATE.start_cstrcspn_#t~post4#1.offset| 0) (= (select (select |c_#memory_int#1| |c_ULTIMATE.start_cstrcspn_#t~post4#1.base|) |c_ULTIMATE.start_cstrcspn_#t~post4#1.offset|) |c_ULTIMATE.start_cstrcspn_~c~0#1|) (and (<= 0 |c_ULTIMATE.start_cstrcspn_~spanp~0#1.offset|) (<= (+ |c_ULTIMATE.start_cstrcspn_~spanp~0#1.offset| 1) .cse0))) (<= 0 |c_ULTIMATE.start_cstrcspn_#t~post4#1.offset|) (forall ((|v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980| Int)) (or (= (select (select |c_#memory_int#1| |c_ULTIMATE.start_cstrcspn_~spanp~0#1.base|) (+ (- 1) |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980|)) |c_ULTIMATE.start_cstrcspn_~c~0#1|) (< (+ |c_ULTIMATE.start_cstrcspn_~spanp~0#1.offset| 9) |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980|) (< |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980| 1) (< |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980| .cse0))) (<= (+ |c_ULTIMATE.start_cstrcspn_#t~post4#1.offset| 1) (select |c_#length| |c_ULTIMATE.start_cstrcspn_#t~post4#1.base|)))) is different from false [2024-11-24 01:46:39,940 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#length| |c_ULTIMATE.start_cstrcspn_~spanp~0#1.base|))) (and (forall ((|v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980| Int)) (or (= (select (select |c_#memory_int#1| |c_ULTIMATE.start_cstrcspn_~spanp~0#1.base|) (+ (- 1) |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980|)) |c_ULTIMATE.start_cstrcspn_~c~0#1|) (< (+ |c_ULTIMATE.start_cstrcspn_~spanp~0#1.offset| 9) |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980|) (< |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980| 1) (< |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980| .cse0))) (or (and (<= 0 |c_ULTIMATE.start_cstrcspn_~spanp~0#1.offset|) (<= (+ |c_ULTIMATE.start_cstrcspn_~spanp~0#1.offset| 1) .cse0)) (= |c_ULTIMATE.start_cstrcspn_#t~mem5#1| |c_ULTIMATE.start_cstrcspn_~c~0#1|)))) is different from false [2024-11-24 01:46:40,897 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#length| |c_ULTIMATE.start_cstrcspn_~spanp~0#1.base|))) (and (forall ((|v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980| Int)) (or (= (select (select |c_#memory_int#1| |c_ULTIMATE.start_cstrcspn_~spanp~0#1.base|) (+ (- 1) |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980|)) |c_ULTIMATE.start_cstrcspn_~c~0#1|) (< (+ |c_ULTIMATE.start_cstrcspn_~spanp~0#1.offset| 9) |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980|) (< |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980| 1) (< |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980| .cse0))) (or (= |c_ULTIMATE.start_cstrcspn_~sc~0#1| |c_ULTIMATE.start_cstrcspn_~c~0#1|) (and (<= 0 |c_ULTIMATE.start_cstrcspn_~spanp~0#1.offset|) (<= (+ |c_ULTIMATE.start_cstrcspn_~spanp~0#1.offset| 1) .cse0))))) is different from false [2024-11-24 01:46:41,312 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#length| |c_ULTIMATE.start_cstrcspn_~spanp~0#1.base|))) (and (forall ((|v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980| Int)) (or (= (select (select |c_#memory_int#1| |c_ULTIMATE.start_cstrcspn_~spanp~0#1.base|) (+ (- 1) |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980|)) |c_ULTIMATE.start_cstrcspn_~c~0#1|) (< (+ |c_ULTIMATE.start_cstrcspn_~spanp~0#1.offset| 9) |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980|) (< |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980| 1) (< |v_ULTIMATE.start_cstrcspn_~spanp~0#1.offset_980| .cse0))) (<= 0 |c_ULTIMATE.start_cstrcspn_~spanp~0#1.offset|) (<= (+ |c_ULTIMATE.start_cstrcspn_~spanp~0#1.offset| 1) .cse0))) is different from false