./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memsafety.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+nlh-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version fca748b1 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+nlh-reducer.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 e486f0f9d7d5faf0af2c33128bdcb8eeb95bb04afff03e23e86c60ceb8da8466 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-20 15:01:44,368 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-20 15:01:44,448 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-20 15:01:44,457 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-20 15:01:44,457 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-20 15:01:44,490 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-20 15:01:44,493 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-20 15:01:44,493 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-20 15:01:44,494 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-20 15:01:44,495 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-20 15:01:44,496 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-20 15:01:44,496 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-20 15:01:44,497 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-20 15:01:44,497 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-20 15:01:44,499 INFO L153 SettingsManager]: * Use SBE=true [2024-11-20 15:01:44,500 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-20 15:01:44,500 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-20 15:01:44,500 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-20 15:01:44,501 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-20 15:01:44,501 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-20 15:01:44,501 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-20 15:01:44,502 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-20 15:01:44,506 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-20 15:01:44,506 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-20 15:01:44,507 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-20 15:01:44,507 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-20 15:01:44,507 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-20 15:01:44,507 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-20 15:01:44,508 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-20 15:01:44,508 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-20 15:01:44,508 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-20 15:01:44,508 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-20 15:01:44,509 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-20 15:01:44,509 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 15:01:44,509 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-20 15:01:44,510 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-20 15:01:44,510 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-20 15:01:44,511 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-20 15:01:44,511 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-20 15:01:44,512 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-20 15:01:44,512 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-20 15:01:44,513 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-20 15:01:44,513 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e486f0f9d7d5faf0af2c33128bdcb8eeb95bb04afff03e23e86c60ceb8da8466 [2024-11-20 15:01:44,751 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-20 15:01:44,770 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-20 15:01:44,778 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-20 15:01:44,780 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-20 15:01:44,780 INFO L274 PluginConnector]: CDTParser initialized [2024-11-20 15:01:44,781 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+nlh-reducer.c [2024-11-20 15:01:46,193 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-20 15:01:46,461 INFO L384 CDTParser]: Found 1 translation units. [2024-11-20 15:01:46,465 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+nlh-reducer.c [2024-11-20 15:01:46,483 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87a74c46b/070d71c0af344be9a9d9712847ab244a/FLAGddf1d62d1 [2024-11-20 15:01:46,495 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87a74c46b/070d71c0af344be9a9d9712847ab244a [2024-11-20 15:01:46,497 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-20 15:01:46,499 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-20 15:01:46,500 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-20 15:01:46,500 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-20 15:01:46,505 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-20 15:01:46,506 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 03:01:46" (1/1) ... [2024-11-20 15:01:46,507 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67c42af0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:01:46, skipping insertion in model container [2024-11-20 15:01:46,507 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 03:01:46" (1/1) ... [2024-11-20 15:01:46,571 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-20 15:01:46,996 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 15:01:47,005 INFO L200 MainTranslator]: Completed pre-run [2024-11-20 15:01:47,174 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 15:01:47,194 INFO L204 MainTranslator]: Completed translation [2024-11-20 15:01:47,194 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:01:47 WrapperNode [2024-11-20 15:01:47,195 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-20 15:01:47,196 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-20 15:01:47,196 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-20 15:01:47,197 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-20 15:01:47,203 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:01:47" (1/1) ... [2024-11-20 15:01:47,236 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:01:47" (1/1) ... [2024-11-20 15:01:47,318 INFO L138 Inliner]: procedures = 18, calls = 620, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 2285 [2024-11-20 15:01:47,318 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-20 15:01:47,319 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-20 15:01:47,320 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-20 15:01:47,320 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-20 15:01:47,330 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:01:47" (1/1) ... [2024-11-20 15:01:47,331 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:01:47" (1/1) ... [2024-11-20 15:01:47,346 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:01:47" (1/1) ... [2024-11-20 15:01:47,462 INFO L175 MemorySlicer]: Split 221 memory accesses to 5 slices as follows [2, 7, 41, 2, 169]. 76 percent of accesses are in the largest equivalence class. The 11 initializations are split as follows [2, 7, 0, 2, 0]. The 127 writes are split as follows [0, 0, 0, 0, 127]. [2024-11-20 15:01:47,462 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:01:47" (1/1) ... [2024-11-20 15:01:47,463 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:01:47" (1/1) ... [2024-11-20 15:01:47,521 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:01:47" (1/1) ... [2024-11-20 15:01:47,537 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:01:47" (1/1) ... [2024-11-20 15:01:47,546 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:01:47" (1/1) ... [2024-11-20 15:01:47,557 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:01:47" (1/1) ... [2024-11-20 15:01:47,574 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-20 15:01:47,575 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-20 15:01:47,575 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-20 15:01:47,576 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-20 15:01:47,576 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:01:47" (1/1) ... [2024-11-20 15:01:47,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 15:01:47,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 15:01:47,615 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-20 15:01:47,618 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-20 15:01:47,667 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-20 15:01:47,667 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-20 15:01:47,667 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-20 15:01:47,667 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-20 15:01:47,668 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-20 15:01:47,668 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-20 15:01:47,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-20 15:01:47,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-20 15:01:47,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-20 15:01:47,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-20 15:01:47,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-20 15:01:47,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-11-20 15:01:47,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-11-20 15:01:47,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2024-11-20 15:01:47,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2024-11-20 15:01:47,671 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2024-11-20 15:01:47,671 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-20 15:01:47,671 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-20 15:01:47,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-20 15:01:47,671 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-20 15:01:47,672 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-20 15:01:47,672 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-20 15:01:47,672 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-20 15:01:47,672 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-20 15:01:47,672 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-20 15:01:47,880 INFO L238 CfgBuilder]: Building ICFG [2024-11-20 15:01:47,882 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-20 15:01:57,034 INFO L? ?]: Removed 646 outVars from TransFormulas that were not future-live. [2024-11-20 15:01:57,035 INFO L287 CfgBuilder]: Performing block encoding [2024-11-20 15:01:57,060 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-20 15:01:57,060 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-20 15:01:57,060 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 03:01:57 BoogieIcfgContainer [2024-11-20 15:01:57,061 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-20 15:01:57,062 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-20 15:01:57,062 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-20 15:01:57,066 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-20 15:01:57,066 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 03:01:46" (1/3) ... [2024-11-20 15:01:57,066 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37c53818 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 03:01:57, skipping insertion in model container [2024-11-20 15:01:57,067 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:01:47" (2/3) ... [2024-11-20 15:01:57,067 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37c53818 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 03:01:57, skipping insertion in model container [2024-11-20 15:01:57,067 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 03:01:57" (3/3) ... [2024-11-20 15:01:57,068 INFO L112 eAbstractionObserver]: Analyzing ICFG aiob_4.c.v+nlh-reducer.c [2024-11-20 15:01:57,106 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-20 15:01:57,107 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 168 error locations. [2024-11-20 15:01:57,168 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 15:01:57,174 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;@6277ed04, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 15:01:57,174 INFO L334 AbstractCegarLoop]: Starting to check reachability of 168 error locations. [2024-11-20 15:01:57,180 INFO L276 IsEmpty]: Start isEmpty. Operand has 471 states, 302 states have (on average 2.1258278145695364) internal successors, (642), 470 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:01:57,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-20 15:01:57,186 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 15:01:57,187 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-20 15:01:57,188 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr167ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2024-11-20 15:01:57,193 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 15:01:57,193 INFO L85 PathProgramCache]: Analyzing trace with hash 926756, now seen corresponding path program 1 times [2024-11-20 15:01:57,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 15:01:57,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231143702] [2024-11-20 15:01:57,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 15:01:57,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 15:01:57,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 15:01:57,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 15:01:57,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 15:01:57,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231143702] [2024-11-20 15:01:57,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231143702] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 15:01:57,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 15:01:57,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 15:01:57,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153651658] [2024-11-20 15:01:57,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 15:01:57,748 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 15:01:57,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 15:01:57,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 15:01:57,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 15:01:57,776 INFO L87 Difference]: Start difference. First operand has 471 states, 302 states have (on average 2.1258278145695364) internal successors, (642), 470 states have internal predecessors, (642), 0 states have call successors, (0), 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, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:02:03,247 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-20 15:02:07,517 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-20 15:02:11,881 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.36s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-20 15:02:16,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 15:02:16,839 INFO L93 Difference]: Finished difference Result 471 states and 598 transitions. [2024-11-20 15:02:16,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 15:02:16,842 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 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 4 [2024-11-20 15:02:16,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 15:02:16,852 INFO L225 Difference]: With dead ends: 471 [2024-11-20 15:02:16,852 INFO L226 Difference]: Without dead ends: 468 [2024-11-20 15:02:16,853 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 15:02:16,856 INFO L432 NwaCegarLoop]: 511 mSDtfsCounter, 164 mSDsluCounter, 511 mSDsCounter, 0 mSdLazyCounter, 600 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 1022 SdHoareTripleChecker+Invalid, 603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 600 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.9s IncrementalHoareTripleChecker+Time [2024-11-20 15:02:16,857 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 1022 Invalid, 603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 600 Invalid, 3 Unknown, 0 Unchecked, 18.9s Time] [2024-11-20 15:02:16,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2024-11-20 15:02:16,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 468. [2024-11-20 15:02:16,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 468 states, 300 states have (on average 1.98) internal successors, (594), 467 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:02:16,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 594 transitions. [2024-11-20 15:02:16,934 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 594 transitions. Word has length 4 [2024-11-20 15:02:16,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 15:02:16,935 INFO L471 AbstractCegarLoop]: Abstraction has 468 states and 594 transitions. [2024-11-20 15:02:16,935 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:02:16,935 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 594 transitions. [2024-11-20 15:02:16,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-20 15:02:16,935 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 15:02:16,936 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-20 15:02:16,936 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-20 15:02:16,936 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2024-11-20 15:02:16,937 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 15:02:16,938 INFO L85 PathProgramCache]: Analyzing trace with hash 925669, now seen corresponding path program 1 times [2024-11-20 15:02:16,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 15:02:16,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922811022] [2024-11-20 15:02:16,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 15:02:16,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 15:02:17,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 15:02:17,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 15:02:17,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 15:02:17,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922811022] [2024-11-20 15:02:17,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922811022] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 15:02:17,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 15:02:17,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 15:02:17,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113876901] [2024-11-20 15:02:17,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 15:02:17,605 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 15:02:17,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 15:02:17,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 15:02:17,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 15:02:17,606 INFO L87 Difference]: Start difference. First operand 468 states and 594 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:02:23,192 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-20 15:02:27,552 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-20 15:02:33,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 15:02:33,938 INFO L93 Difference]: Finished difference Result 427 states and 553 transitions. [2024-11-20 15:02:33,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 15:02:33,939 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 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 4 [2024-11-20 15:02:33,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 15:02:33,941 INFO L225 Difference]: With dead ends: 427 [2024-11-20 15:02:33,941 INFO L226 Difference]: Without dead ends: 427 [2024-11-20 15:02:33,942 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-20 15:02:33,943 INFO L432 NwaCegarLoop]: 257 mSDtfsCounter, 501 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 682 mSolverCounterSat, 41 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 501 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 682 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.2s IncrementalHoareTripleChecker+Time [2024-11-20 15:02:33,943 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [501 Valid, 471 Invalid, 725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 682 Invalid, 2 Unknown, 0 Unchecked, 16.2s Time] [2024-11-20 15:02:33,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2024-11-20 15:02:33,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 427. [2024-11-20 15:02:33,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 300 states have (on average 1.8433333333333333) internal successors, (553), 426 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:02:33,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 553 transitions. [2024-11-20 15:02:33,957 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 553 transitions. Word has length 4 [2024-11-20 15:02:33,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 15:02:33,957 INFO L471 AbstractCegarLoop]: Abstraction has 427 states and 553 transitions. [2024-11-20 15:02:33,958 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:02:33,958 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 553 transitions. [2024-11-20 15:02:33,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-20 15:02:33,958 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 15:02:33,958 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-20 15:02:33,958 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-20 15:02:33,959 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2024-11-20 15:02:33,959 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 15:02:33,959 INFO L85 PathProgramCache]: Analyzing trace with hash 925670, now seen corresponding path program 1 times [2024-11-20 15:02:33,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 15:02:33,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888756908] [2024-11-20 15:02:33,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 15:02:33,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 15:02:34,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 15:02:34,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 15:02:34,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 15:02:34,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888756908] [2024-11-20 15:02:34,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888756908] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 15:02:34,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 15:02:34,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 15:02:34,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156384859] [2024-11-20 15:02:34,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 15:02:34,513 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 15:02:34,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 15:02:34,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 15:02:34,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 15:02:34,514 INFO L87 Difference]: Start difference. First operand 427 states and 553 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:02:39,616 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-20 15:02:43,959 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.34s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-20 15:02:47,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 15:02:47,839 INFO L93 Difference]: Finished difference Result 386 states and 512 transitions. [2024-11-20 15:02:47,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 15:02:47,840 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 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 4 [2024-11-20 15:02:47,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 15:02:47,841 INFO L225 Difference]: With dead ends: 386 [2024-11-20 15:02:47,842 INFO L226 Difference]: Without dead ends: 386 [2024-11-20 15:02:47,842 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 15:02:47,843 INFO L432 NwaCegarLoop]: 470 mSDtfsCounter, 80 mSDsluCounter, 598 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 40 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 1068 SdHoareTripleChecker+Invalid, 426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 384 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.3s IncrementalHoareTripleChecker+Time [2024-11-20 15:02:47,847 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 1068 Invalid, 426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 384 Invalid, 2 Unknown, 0 Unchecked, 13.3s Time] [2024-11-20 15:02:47,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2024-11-20 15:02:47,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 386. [2024-11-20 15:02:47,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 300 states have (on average 1.7066666666666668) internal successors, (512), 385 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:02:47,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 512 transitions. [2024-11-20 15:02:47,867 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 512 transitions. Word has length 4 [2024-11-20 15:02:47,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 15:02:47,868 INFO L471 AbstractCegarLoop]: Abstraction has 386 states and 512 transitions. [2024-11-20 15:02:47,868 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:02:47,868 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 512 transitions. [2024-11-20 15:02:47,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-20 15:02:47,870 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 15:02:47,870 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 15:02:47,870 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-20 15:02:47,871 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr167ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2024-11-20 15:02:47,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 15:02:47,873 INFO L85 PathProgramCache]: Analyzing trace with hash 619918579, now seen corresponding path program 1 times [2024-11-20 15:02:47,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 15:02:47,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857989153] [2024-11-20 15:02:47,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 15:02:47,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 15:02:53,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 15:02:53,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 15:02:53,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 15:02:53,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857989153] [2024-11-20 15:02:53,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857989153] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 15:02:53,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 15:02:53,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 15:02:53,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567308509] [2024-11-20 15:02:53,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 15:02:53,773 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 15:02:53,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 15:02:53,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 15:02:53,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 15:02:53,775 INFO L87 Difference]: Start difference. First operand 386 states and 512 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:02:56,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 15:02:56,085 INFO L93 Difference]: Finished difference Result 388 states and 512 transitions. [2024-11-20 15:02:56,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 15:02:56,086 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2024-11-20 15:02:56,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 15:02:56,087 INFO L225 Difference]: With dead ends: 388 [2024-11-20 15:02:56,088 INFO L226 Difference]: Without dead ends: 388 [2024-11-20 15:02:56,088 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 15:02:56,089 INFO L432 NwaCegarLoop]: 509 mSDtfsCounter, 91 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 760 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-20 15:02:56,089 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 760 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-20 15:02:56,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2024-11-20 15:02:56,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 386. [2024-11-20 15:02:56,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 300 states have (on average 1.7033333333333334) internal successors, (511), 385 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:02:56,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 511 transitions. [2024-11-20 15:02:56,098 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 511 transitions. Word has length 88 [2024-11-20 15:02:56,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 15:02:56,098 INFO L471 AbstractCegarLoop]: Abstraction has 386 states and 511 transitions. [2024-11-20 15:02:56,099 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:02:56,099 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 511 transitions. [2024-11-20 15:02:56,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-20 15:02:56,101 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 15:02:56,101 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 15:02:56,101 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-20 15:02:56,101 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr167ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2024-11-20 15:02:56,102 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 15:02:56,102 INFO L85 PathProgramCache]: Analyzing trace with hash 2036638708, now seen corresponding path program 1 times [2024-11-20 15:02:56,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 15:02:56,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692052444] [2024-11-20 15:02:56,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 15:02:56,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 15:03:00,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 15:03:01,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 15:03:01,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 15:03:01,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692052444] [2024-11-20 15:03:01,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692052444] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 15:03:01,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 15:03:01,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 15:03:01,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606148093] [2024-11-20 15:03:01,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 15:03:01,553 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 15:03:01,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 15:03:01,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 15:03:01,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 15:03:01,554 INFO L87 Difference]: Start difference. First operand 386 states and 511 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 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) [2024-11-20 15:03:01,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 15:03:01,601 INFO L93 Difference]: Finished difference Result 386 states and 510 transitions. [2024-11-20 15:03:01,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 15:03:01,602 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 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 89 [2024-11-20 15:03:01,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 15:03:01,606 INFO L225 Difference]: With dead ends: 386 [2024-11-20 15:03:01,606 INFO L226 Difference]: Without dead ends: 386 [2024-11-20 15:03:01,606 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 15:03:01,608 INFO L432 NwaCegarLoop]: 509 mSDtfsCounter, 0 mSDsluCounter, 507 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1016 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 15:03:01,609 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1016 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 15:03:01,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2024-11-20 15:03:01,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 386. [2024-11-20 15:03:01,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 300 states have (on average 1.7) internal successors, (510), 385 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:03:01,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 510 transitions. [2024-11-20 15:03:01,619 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 510 transitions. Word has length 89 [2024-11-20 15:03:01,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 15:03:01,619 INFO L471 AbstractCegarLoop]: Abstraction has 386 states and 510 transitions. [2024-11-20 15:03:01,620 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 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) [2024-11-20 15:03:01,620 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 510 transitions. [2024-11-20 15:03:01,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-20 15:03:01,622 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 15:03:01,623 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 15:03:01,623 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-20 15:03:01,624 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr82REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2024-11-20 15:03:01,625 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 15:03:01,625 INFO L85 PathProgramCache]: Analyzing trace with hash 2036637796, now seen corresponding path program 1 times [2024-11-20 15:03:01,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 15:03:01,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371192122] [2024-11-20 15:03:01,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 15:03:01,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 15:03:05,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 15:03:06,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 15:03:06,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 15:03:06,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371192122] [2024-11-20 15:03:06,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371192122] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 15:03:06,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 15:03:06,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 15:03:06,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156118895] [2024-11-20 15:03:06,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 15:03:06,681 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 15:03:06,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 15:03:06,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 15:03:06,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 15:03:06,682 INFO L87 Difference]: Start difference. First operand 386 states and 510 transitions. Second operand has 4 states, 3 states have (on average 29.666666666666668) internal successors, (89), 4 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) [2024-11-20 15:03:11,806 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []