./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memcleanup.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/heap-manipulation/dll_of_dll-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version 61a67961 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/heap-manipulation/dll_of_dll-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-MemCleanup-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-memcleanup) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0eca46c14885d62179341dcc13b398752af03e020a80dcf533f4c9afc7372707 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 17:21:23,512 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 17:21:23,600 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-MemCleanup-32bit-Automizer_Default.epf [2024-10-14 17:21:23,605 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 17:21:23,607 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 17:21:23,627 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 17:21:23,628 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 17:21:23,628 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 17:21:23,629 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 17:21:23,629 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 17:21:23,630 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 17:21:23,630 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 17:21:23,631 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 17:21:23,631 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 17:21:23,633 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 17:21:23,633 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 17:21:23,634 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-14 17:21:23,634 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 17:21:23,634 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 17:21:23,637 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 17:21:23,637 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 17:21:23,638 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-14 17:21:23,638 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-14 17:21:23,638 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-14 17:21:23,639 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 17:21:23,639 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-14 17:21:23,639 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-14 17:21:23,640 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 17:21:23,640 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-14 17:21:23,640 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 17:21:23,641 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-14 17:21:23,641 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 17:21:23,641 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 17:21:23,641 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 17:21:23,642 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 17:21:23,642 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 17:21:23,642 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 17:21:23,648 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 17:21:23,648 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 17:21:23,648 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 17:21:23,649 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 17:21:23,649 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 17:21:23,649 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 17:21:23,649 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 17:21:23,649 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 17:21:23,649 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0eca46c14885d62179341dcc13b398752af03e020a80dcf533f4c9afc7372707 [2024-10-14 17:21:23,889 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 17:21:23,914 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 17:21:23,918 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 17:21:23,919 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 17:21:23,922 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 17:21:23,924 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/heap-manipulation/dll_of_dll-2.i [2024-10-14 17:21:25,385 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 17:21:25,621 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 17:21:25,622 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/heap-manipulation/dll_of_dll-2.i [2024-10-14 17:21:25,638 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb5b29308/0c41b296d4e848108602ea8a4633f26a/FLAG1294f2243 [2024-10-14 17:21:25,650 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb5b29308/0c41b296d4e848108602ea8a4633f26a [2024-10-14 17:21:25,652 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 17:21:25,653 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 17:21:25,655 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 17:21:25,655 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 17:21:25,670 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 17:21:25,670 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:21:25" (1/1) ... [2024-10-14 17:21:25,671 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e7a1918 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:21:25, skipping insertion in model container [2024-10-14 17:21:25,672 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:21:25" (1/1) ... [2024-10-14 17:21:25,721 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 17:21:26,028 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 17:21:26,039 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 17:21:26,116 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 17:21:26,152 INFO L204 MainTranslator]: Completed translation [2024-10-14 17:21:26,152 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:21:26 WrapperNode [2024-10-14 17:21:26,153 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 17:21:26,154 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 17:21:26,154 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 17:21:26,154 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 17:21:26,160 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:21:26" (1/1) ... [2024-10-14 17:21:26,179 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:21:26" (1/1) ... [2024-10-14 17:21:26,216 INFO L138 Inliner]: procedures = 140, calls = 95, calls flagged for inlining = 14, calls inlined = 14, statements flattened = 236 [2024-10-14 17:21:26,217 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 17:21:26,217 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 17:21:26,217 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 17:21:26,218 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 17:21:26,229 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:21:26" (1/1) ... [2024-10-14 17:21:26,229 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:21:26" (1/1) ... [2024-10-14 17:21:26,233 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:21:26" (1/1) ... [2024-10-14 17:21:26,268 INFO L175 MemorySlicer]: Split 48 memory accesses to 3 slices as follows [2, 40, 6]. 83 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 0, 1]. The 13 writes are split as follows [0, 11, 2]. [2024-10-14 17:21:26,269 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:21:26" (1/1) ... [2024-10-14 17:21:26,269 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:21:26" (1/1) ... [2024-10-14 17:21:26,280 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:21:26" (1/1) ... [2024-10-14 17:21:26,286 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:21:26" (1/1) ... [2024-10-14 17:21:26,288 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:21:26" (1/1) ... [2024-10-14 17:21:26,290 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:21:26" (1/1) ... [2024-10-14 17:21:26,295 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 17:21:26,296 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 17:21:26,296 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 17:21:26,296 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 17:21:26,297 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:21:26" (1/1) ... [2024-10-14 17:21:26,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 17:21:26,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 17:21:26,335 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) [2024-10-14 17:21:26,337 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 [2024-10-14 17:21:26,375 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2024-10-14 17:21:26,376 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2024-10-14 17:21:26,376 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_base [2024-10-14 17:21:26,376 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_base [2024-10-14 17:21:26,376 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-14 17:21:26,376 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 17:21:26,376 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_master [2024-10-14 17:21:26,377 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_master [2024-10-14 17:21:26,378 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-14 17:21:26,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-10-14 17:21:26,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-10-14 17:21:26,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-10-14 17:21:26,379 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2024-10-14 17:21:26,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2024-10-14 17:21:26,379 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-10-14 17:21:26,379 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-10-14 17:21:26,379 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-10-14 17:21:26,379 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-14 17:21:26,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-10-14 17:21:26,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-10-14 17:21:26,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-10-14 17:21:26,381 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_generic [2024-10-14 17:21:26,381 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_generic [2024-10-14 17:21:26,381 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_slave [2024-10-14 17:21:26,381 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_slave [2024-10-14 17:21:26,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-14 17:21:26,382 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-14 17:21:26,382 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-14 17:21:26,382 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 17:21:26,382 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 17:21:26,533 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 17:21:26,535 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 17:21:26,926 INFO L? ?]: Removed 78 outVars from TransFormulas that were not future-live. [2024-10-14 17:21:26,927 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 17:21:26,968 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 17:21:26,968 INFO L314 CfgBuilder]: Removed 38 assume(true) statements. [2024-10-14 17:21:26,968 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:21:26 BoogieIcfgContainer [2024-10-14 17:21:26,969 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 17:21:26,971 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 17:21:26,971 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 17:21:26,974 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 17:21:26,975 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 05:21:25" (1/3) ... [2024-10-14 17:21:26,975 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4341b6d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:21:26, skipping insertion in model container [2024-10-14 17:21:26,975 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:21:26" (2/3) ... [2024-10-14 17:21:26,975 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4341b6d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:21:26, skipping insertion in model container [2024-10-14 17:21:26,975 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:21:26" (3/3) ... [2024-10-14 17:21:26,977 INFO L112 eAbstractionObserver]: Analyzing ICFG dll_of_dll-2.i [2024-10-14 17:21:26,991 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 17:21:26,992 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-14 17:21:27,082 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 17:21:27,096 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;@4ab7924d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 17:21:27,097 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-14 17:21:27,102 INFO L276 IsEmpty]: Start isEmpty. Operand has 122 states, 89 states have (on average 1.7865168539325842) internal successors, (159), 110 states have internal predecessors, (159), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2024-10-14 17:21:27,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-10-14 17:21:27,111 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 17:21:27,112 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 17:21:27,113 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2024-10-14 17:21:27,118 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:21:27,118 INFO L85 PathProgramCache]: Analyzing trace with hash -1857440369, now seen corresponding path program 1 times [2024-10-14 17:21:27,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:21:27,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260321586] [2024-10-14 17:21:27,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:21:27,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:21:27,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:21:27,390 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 17:21:27,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:21:27,478 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 17:21:27,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:21:27,505 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-14 17:21:27,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:21:27,530 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-14 17:21:27,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:21:27,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260321586] [2024-10-14 17:21:27,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260321586] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:21:27,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:21:27,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 17:21:27,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991267193] [2024-10-14 17:21:27,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:21:27,537 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 17:21:27,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:21:27,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 17:21:27,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 17:21:27,575 INFO L87 Difference]: Start difference. First operand has 122 states, 89 states have (on average 1.7865168539325842) internal successors, (159), 110 states have internal predecessors, (159), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-14 17:21:27,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 17:21:27,826 INFO L93 Difference]: Finished difference Result 120 states and 150 transitions. [2024-10-14 17:21:27,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 17:21:27,830 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 32 [2024-10-14 17:21:27,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 17:21:27,849 INFO L225 Difference]: With dead ends: 120 [2024-10-14 17:21:27,849 INFO L226 Difference]: Without dead ends: 119 [2024-10-14 17:21:27,851 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 17:21:27,858 INFO L432 NwaCegarLoop]: 99 mSDtfsCounter, 40 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-14 17:21:27,859 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 153 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-14 17:21:27,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2024-10-14 17:21:27,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2024-10-14 17:21:27,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 88 states have (on average 1.3068181818181819) internal successors, (115), 107 states have internal predecessors, (115), 24 states have call successors, (24), 6 states have call predecessors, (24), 5 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2024-10-14 17:21:27,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 149 transitions. [2024-10-14 17:21:27,914 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 149 transitions. Word has length 32 [2024-10-14 17:21:27,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 17:21:27,914 INFO L471 AbstractCegarLoop]: Abstraction has 119 states and 149 transitions. [2024-10-14 17:21:27,915 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-14 17:21:27,915 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 149 transitions. [2024-10-14 17:21:27,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-10-14 17:21:27,918 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 17:21:27,918 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 17:21:27,919 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 17:21:27,919 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2024-10-14 17:21:27,919 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:21:27,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1839180963, now seen corresponding path program 1 times [2024-10-14 17:21:27,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:21:27,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684771850] [2024-10-14 17:21:27,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:21:27,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:21:27,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:21:28,436 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 17:21:28,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:21:28,708 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 17:21:28,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:21:29,051 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-14 17:21:29,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:21:29,069 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 17:21:29,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:21:29,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684771850] [2024-10-14 17:21:29,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684771850] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 17:21:29,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [325498936] [2024-10-14 17:21:29,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:21:29,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:21:29,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 17:21:29,073 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 17:21:29,075 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-14 17:21:29,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:21:29,246 INFO L255 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-14 17:21:29,252 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 17:21:29,383 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-14 17:21:29,383 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 17:21:29,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [325498936] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:21:29,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 17:21:29,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2024-10-14 17:21:29,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381371420] [2024-10-14 17:21:29,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:21:29,385 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 17:21:29,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:21:29,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 17:21:29,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2024-10-14 17:21:29,388 INFO L87 Difference]: Start difference. First operand 119 states and 149 transitions. Second operand has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-14 17:21:29,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 17:21:29,534 INFO L93 Difference]: Finished difference Result 131 states and 166 transitions. [2024-10-14 17:21:29,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 17:21:29,537 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 33 [2024-10-14 17:21:29,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 17:21:29,538 INFO L225 Difference]: With dead ends: 131 [2024-10-14 17:21:29,539 INFO L226 Difference]: Without dead ends: 131 [2024-10-14 17:21:29,539 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2024-10-14 17:21:29,540 INFO L432 NwaCegarLoop]: 137 mSDtfsCounter, 12 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 524 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 17:21:29,542 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 524 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 17:21:29,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2024-10-14 17:21:29,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2024-10-14 17:21:29,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 95 states have (on average 1.2947368421052632) internal successors, (123), 114 states have internal predecessors, (123), 27 states have call successors, (27), 8 states have call predecessors, (27), 7 states have return successors, (13), 11 states have call predecessors, (13), 13 states have call successors, (13) [2024-10-14 17:21:29,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 163 transitions. [2024-10-14 17:21:29,560 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 163 transitions. Word has length 33 [2024-10-14 17:21:29,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 17:21:29,561 INFO L471 AbstractCegarLoop]: Abstraction has 131 states and 163 transitions. [2024-10-14 17:21:29,561 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-14 17:21:29,561 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 163 transitions. [2024-10-14 17:21:29,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-10-14 17:21:29,565 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 17:21:29,565 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 17:21:29,584 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-14 17:21:29,766 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:21:29,766 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2024-10-14 17:21:29,767 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:21:29,767 INFO L85 PathProgramCache]: Analyzing trace with hash -140909693, now seen corresponding path program 1 times [2024-10-14 17:21:29,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:21:29,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570762082] [2024-10-14 17:21:29,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:21:29,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:21:29,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:21:30,396 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 17:21:30,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:21:30,970 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 17:21:31,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:21:31,231 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 17:21:31,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:21:31,457 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-14 17:21:31,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:21:31,627 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-14 17:21:31,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:21:31,778 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 17:21:31,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:21:32,027 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-14 17:21:32,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:21:32,042 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-10-14 17:21:32,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:21:32,084 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 17:21:32,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:21:32,131 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-14 17:21:32,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:21:32,157 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-14 17:21:32,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:21:32,181 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 17:21:32,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:21:32,194 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-14 17:21:32,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:21:32,207 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 10 proven. 41 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2024-10-14 17:21:32,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:21:32,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570762082] [2024-10-14 17:21:32,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570762082] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 17:21:32,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1948631904] [2024-10-14 17:21:32,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:21:32,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:21:32,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 17:21:32,213 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 17:21:32,216 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-14 17:21:32,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:21:32,562 INFO L255 TraceCheckSpWp]: Trace formula consists of 997 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-10-14 17:21:32,568 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 17:21:32,690 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-14 17:21:32,914 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 29 proven. 21 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-10-14 17:21:32,914 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 17:21:33,669 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 30 treesize of output 26 [2024-10-14 17:21:33,684 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 30 treesize of output 26 [2024-10-14 17:21:33,758 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 27 proven. 23 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-10-14 17:21:33,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1948631904] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 17:21:33,758 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 17:21:33,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 14, 15] total 26 [2024-10-14 17:21:33,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086162224] [2024-10-14 17:21:33,759 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 17:21:33,760 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-10-14 17:21:33,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:21:33,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-10-14 17:21:33,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=565, Unknown=0, NotChecked=0, Total=650 [2024-10-14 17:21:33,762 INFO L87 Difference]: Start difference. First operand 131 states and 163 transitions. Second operand has 26 states, 23 states have (on average 2.739130434782609) internal successors, (63), 21 states have internal predecessors, (63), 10 states have call successors, (21), 6 states have call predecessors, (21), 7 states have return successors, (20), 7 states have call predecessors, (20), 10 states have call successors, (20) [2024-10-14 17:21:35,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 17:21:35,314 INFO L93 Difference]: Finished difference Result 158 states and 192 transitions. [2024-10-14 17:21:35,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-10-14 17:21:35,315 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 23 states have (on average 2.739130434782609) internal successors, (63), 21 states have internal predecessors, (63), 10 states have call successors, (21), 6 states have call predecessors, (21), 7 states have return successors, (20), 7 states have call predecessors, (20), 10 states have call successors, (20) Word has length 93 [2024-10-14 17:21:35,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 17:21:35,316 INFO L225 Difference]: With dead ends: 158 [2024-10-14 17:21:35,316 INFO L226 Difference]: Without dead ends: 151 [2024-10-14 17:21:35,318 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 462 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=333, Invalid=2319, Unknown=0, NotChecked=0, Total=2652 [2024-10-14 17:21:35,318 INFO L432 NwaCegarLoop]: 101 mSDtfsCounter, 138 mSDsluCounter, 1158 mSDsCounter, 0 mSdLazyCounter, 1592 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 1259 SdHoareTripleChecker+Invalid, 1648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-14 17:21:35,320 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 1259 Invalid, 1648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1592 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-14 17:21:35,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2024-10-14 17:21:35,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2024-10-14 17:21:35,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 110 states have (on average 1.2545454545454546) internal successors, (138), 129 states have internal predecessors, (138), 29 states have call successors, (29), 11 states have call predecessors, (29), 10 states have return successors, (17), 13 states have call predecessors, (17), 15 states have call successors, (17) [2024-10-14 17:21:35,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 184 transitions. [2024-10-14 17:21:35,342 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 184 transitions. Word has length 93 [2024-10-14 17:21:35,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 17:21:35,342 INFO L471 AbstractCegarLoop]: Abstraction has 151 states and 184 transitions. [2024-10-14 17:21:35,342 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 23 states have (on average 2.739130434782609) internal successors, (63), 21 states have internal predecessors, (63), 10 states have call successors, (21), 6 states have call predecessors, (21), 7 states have return successors, (20), 7 states have call predecessors, (20), 10 states have call successors, (20) [2024-10-14 17:21:35,343 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 184 transitions. [2024-10-14 17:21:35,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-10-14 17:21:35,345 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 17:21:35,345 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 17:21:35,362 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-14 17:21:35,549 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-10-14 17:21:35,550 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2024-10-14 17:21:35,550 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:21:35,551 INFO L85 PathProgramCache]: Analyzing trace with hash 1951695493, now seen corresponding path program 1 times [2024-10-14 17:21:35,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:21:35,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402095137] [2024-10-14 17:21:35,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:21:35,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:21:35,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:21:36,136 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 17:21:36,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:21:36,637 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 17:21:36,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:21:36,665 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 17:21:36,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:21:36,701 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-14 17:21:36,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:21:36,724 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-14 17:21:36,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:21:36,744 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 17:21:36,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:21:36,753 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-14 17:21:36,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:21:36,764 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-10-14 17:21:36,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:21:37,012 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 17:21:37,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:21:37,270 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-14 17:21:37,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:21:37,316 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-14 17:21:37,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:21:37,339 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 17:21:37,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:21:37,350 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-14 17:21:37,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:21:37,361 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2024-10-14 17:21:37,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:21:37,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402095137] [2024-10-14 17:21:37,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402095137] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 17:21:37,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [937454735] [2024-10-14 17:21:37,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:21:37,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:21:37,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 17:21:37,366 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 17:21:37,367 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-14 17:21:37,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:21:37,762 INFO L255 TraceCheckSpWp]: Trace formula consists of 988 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-10-14 17:21:37,766 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 17:21:37,823 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-14 17:21:37,852 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2024-10-14 17:21:37,862 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2024-10-14 17:21:37,863 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 17:21:38,119 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 30 treesize of output 26 [2024-10-14 17:21:38,128 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 30 treesize of output 26 [2024-10-14 17:21:38,264 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2024-10-14 17:21:38,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [937454735] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 17:21:38,265 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 17:21:38,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 14 [2024-10-14 17:21:38,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183811548] [2024-10-14 17:21:38,265 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 17:21:38,266 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-14 17:21:38,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:21:38,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-14 17:21:38,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2024-10-14 17:21:38,267 INFO L87 Difference]: Start difference. First operand 151 states and 184 transitions. Second operand has 14 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 6 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) [2024-10-14 17:21:39,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 17:21:39,017 INFO L93 Difference]: Finished difference Result 207 states and 252 transitions. [2024-10-14 17:21:39,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-14 17:21:39,018 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 6 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) Word has length 93 [2024-10-14 17:21:39,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 17:21:39,020 INFO L225 Difference]: With dead ends: 207 [2024-10-14 17:21:39,020 INFO L226 Difference]: Without dead ends: 207 [2024-10-14 17:21:39,020 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=67, Invalid=439, Unknown=0, NotChecked=0, Total=506 [2024-10-14 17:21:39,021 INFO L432 NwaCegarLoop]: 104 mSDtfsCounter, 143 mSDsluCounter, 1127 mSDsCounter, 0 mSdLazyCounter, 860 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 1231 SdHoareTripleChecker+Invalid, 890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 860 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-14 17:21:39,021 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 1231 Invalid, 890 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 860 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-14 17:21:39,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2024-10-14 17:21:39,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 175. [2024-10-14 17:21:39,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 133 states have (on average 1.255639097744361) internal successors, (167), 151 states have internal predecessors, (167), 29 states have call successors, (29), 12 states have call predecessors, (29), 11 states have return successors, (17), 13 states have call predecessors, (17), 15 states have call successors, (17) [2024-10-14 17:21:39,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 213 transitions. [2024-10-14 17:21:39,031 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 213 transitions. Word has length 93 [2024-10-14 17:21:39,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 17:21:39,032 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 213 transitions. [2024-10-14 17:21:39,032 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 6 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) [2024-10-14 17:21:39,032 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 213 transitions. [2024-10-14 17:21:39,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-10-14 17:21:39,033 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 17:21:39,033 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 17:21:39,053 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-14 17:21:39,237 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:21:39,238 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2024-10-14 17:21:39,238 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:21:39,238 INFO L85 PathProgramCache]: Analyzing trace with hash 1657557857, now seen corresponding path program 1 times [2024-10-14 17:21:39,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:21:39,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325299825] [2024-10-14 17:21:39,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:21:39,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:21:39,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:21:43,225 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 17:21:43,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:21:45,530 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 17:21:45,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:21:45,921 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 17:21:45,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:21:46,402 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-14 17:21:46,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:21:46,863 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-14 17:21:46,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:21:49,015 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 17:21:49,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:21:49,251 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-14 17:21:49,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:21:49,678 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-10-14 17:21:49,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:21:50,558 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 17:21:50,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:21:51,681 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-14 17:21:51,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:21:52,310 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-14 17:21:52,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat