./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/heap-manipulation/dll_of_dll-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a046e57d 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/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/heap-manipulation/dll_of_dll-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-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 ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0e14b8baad7c8f50637b16b3adcb891ef363d7563e7c4e0e74695e7b8e3d1787 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-12 18:18:09,512 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-12 18:18:09,568 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-12 18:18:09,572 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-12 18:18:09,572 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-12 18:18:09,607 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-12 18:18:09,609 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-12 18:18:09,609 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-12 18:18:09,610 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-12 18:18:09,611 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-12 18:18:09,612 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-12 18:18:09,612 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-12 18:18:09,612 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-12 18:18:09,623 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-12 18:18:09,623 INFO L153 SettingsManager]: * Use SBE=true [2024-10-12 18:18:09,624 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-12 18:18:09,624 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-12 18:18:09,624 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-12 18:18:09,624 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-12 18:18:09,624 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-12 18:18:09,624 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-12 18:18:09,626 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-12 18:18:09,626 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-12 18:18:09,626 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-12 18:18:09,627 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-12 18:18:09,627 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-12 18:18:09,627 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-12 18:18:09,627 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-12 18:18:09,627 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-12 18:18:09,628 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-12 18:18:09,630 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-12 18:18:09,630 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-12 18:18:09,631 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 18:18:09,631 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-12 18:18:09,631 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-12 18:18:09,631 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-12 18:18:09,631 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-12 18:18:09,631 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-12 18:18:09,631 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-12 18:18:09,632 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-12 18:18:09,632 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-12 18:18:09,632 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-12 18:18:09,632 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0e14b8baad7c8f50637b16b3adcb891ef363d7563e7c4e0e74695e7b8e3d1787 [2024-10-12 18:18:09,825 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-12 18:18:09,849 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-12 18:18:09,853 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-12 18:18:09,854 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-12 18:18:09,855 INFO L274 PluginConnector]: CDTParser initialized [2024-10-12 18:18:09,856 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/heap-manipulation/dll_of_dll-1.i [2024-10-12 18:18:11,098 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-12 18:18:11,340 INFO L384 CDTParser]: Found 1 translation units. [2024-10-12 18:18:11,341 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/heap-manipulation/dll_of_dll-1.i [2024-10-12 18:18:11,362 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aaf33a08d/ccca7a8e7dd44a118dc2f7a05a0856e2/FLAG7ffab96d6 [2024-10-12 18:18:11,654 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aaf33a08d/ccca7a8e7dd44a118dc2f7a05a0856e2 [2024-10-12 18:18:11,656 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-12 18:18:11,657 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-12 18:18:11,658 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-12 18:18:11,658 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-12 18:18:11,663 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-12 18:18:11,663 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 06:18:11" (1/1) ... [2024-10-12 18:18:11,664 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a13c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:18:11, skipping insertion in model container [2024-10-12 18:18:11,664 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 06:18:11" (1/1) ... [2024-10-12 18:18:11,695 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-12 18:18:11,967 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/heap-manipulation/dll_of_dll-1.i[22634,22647] [2024-10-12 18:18:12,023 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 18:18:12,032 INFO L200 MainTranslator]: Completed pre-run [2024-10-12 18:18:12,067 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/heap-manipulation/dll_of_dll-1.i[22634,22647] [2024-10-12 18:18:12,092 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 18:18:12,124 INFO L204 MainTranslator]: Completed translation [2024-10-12 18:18:12,124 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:18:12 WrapperNode [2024-10-12 18:18:12,124 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-12 18:18:12,125 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-12 18:18:12,126 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-12 18:18:12,126 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-12 18:18:12,131 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:18:12" (1/1) ... [2024-10-12 18:18:12,149 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:18:12" (1/1) ... [2024-10-12 18:18:12,178 INFO L138 Inliner]: procedures = 140, calls = 94, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 231 [2024-10-12 18:18:12,178 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-12 18:18:12,179 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-12 18:18:12,179 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-12 18:18:12,179 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-12 18:18:12,188 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:18:12" (1/1) ... [2024-10-12 18:18:12,189 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:18:12" (1/1) ... [2024-10-12 18:18:12,195 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:18:12" (1/1) ... [2024-10-12 18:18:12,226 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]. [2024-10-12 18:18:12,226 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:18:12" (1/1) ... [2024-10-12 18:18:12,227 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:18:12" (1/1) ... [2024-10-12 18:18:12,235 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:18:12" (1/1) ... [2024-10-12 18:18:12,240 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:18:12" (1/1) ... [2024-10-12 18:18:12,242 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:18:12" (1/1) ... [2024-10-12 18:18:12,244 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:18:12" (1/1) ... [2024-10-12 18:18:12,247 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-12 18:18:12,249 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-12 18:18:12,249 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-12 18:18:12,249 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-12 18:18:12,250 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:18:12" (1/1) ... [2024-10-12 18:18:12,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 18:18:12,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:18:12,285 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) [2024-10-12 18:18:12,289 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 [2024-10-12 18:18:12,332 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2024-10-12 18:18:12,332 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2024-10-12 18:18:12,332 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_base [2024-10-12 18:18:12,332 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_base [2024-10-12 18:18:12,333 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-12 18:18:12,333 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-12 18:18:12,333 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_master [2024-10-12 18:18:12,333 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_master [2024-10-12 18:18:12,334 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-12 18:18:12,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-10-12 18:18:12,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-10-12 18:18:12,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-10-12 18:18:12,335 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2024-10-12 18:18:12,335 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2024-10-12 18:18:12,335 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-10-12 18:18:12,335 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-10-12 18:18:12,336 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-10-12 18:18:12,336 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-12 18:18:12,336 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-10-12 18:18:12,336 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-10-12 18:18:12,337 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-10-12 18:18:12,337 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_generic [2024-10-12 18:18:12,337 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_generic [2024-10-12 18:18:12,337 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_slave [2024-10-12 18:18:12,338 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_slave [2024-10-12 18:18:12,338 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-12 18:18:12,338 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-12 18:18:12,338 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-12 18:18:12,338 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-12 18:18:12,338 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-12 18:18:12,502 INFO L238 CfgBuilder]: Building ICFG [2024-10-12 18:18:12,505 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-12 18:18:12,860 INFO L? ?]: Removed 76 outVars from TransFormulas that were not future-live. [2024-10-12 18:18:12,860 INFO L287 CfgBuilder]: Performing block encoding [2024-10-12 18:18:12,921 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-12 18:18:12,924 INFO L314 CfgBuilder]: Removed 38 assume(true) statements. [2024-10-12 18:18:12,925 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 06:18:12 BoogieIcfgContainer [2024-10-12 18:18:12,925 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-12 18:18:12,927 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-12 18:18:12,930 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-12 18:18:12,934 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-12 18:18:12,937 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 06:18:11" (1/3) ... [2024-10-12 18:18:12,938 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65ca25cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 06:18:12, skipping insertion in model container [2024-10-12 18:18:12,938 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:18:12" (2/3) ... [2024-10-12 18:18:12,938 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65ca25cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 06:18:12, skipping insertion in model container [2024-10-12 18:18:12,938 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 06:18:12" (3/3) ... [2024-10-12 18:18:12,966 INFO L112 eAbstractionObserver]: Analyzing ICFG dll_of_dll-1.i [2024-10-12 18:18:12,981 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-12 18:18:12,981 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-12 18:18:13,033 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-12 18:18:13,038 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=LoopHeads, 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;@9ffd456, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-12 18:18:13,039 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-12 18:18:13,042 INFO L276 IsEmpty]: Start isEmpty. Operand has 117 states, 85 states have (on average 1.8) internal successors, (153), 105 states have internal predecessors, (153), 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) [2024-10-12 18:18:13,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-10-12 18:18:13,049 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:18:13,050 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] [2024-10-12 18:18:13,050 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:18:13,054 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:18:13,054 INFO L85 PathProgramCache]: Analyzing trace with hash -1364741834, now seen corresponding path program 1 times [2024-10-12 18:18:13,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:18:13,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113043236] [2024-10-12 18:18:13,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:18:13,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:18:13,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:18:13,281 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 18:18:13,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:18:13,355 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 18:18:13,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:18:13,396 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-12 18:18:13,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:18:13,429 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-12 18:18:13,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:18:13,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113043236] [2024-10-12 18:18:13,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113043236] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 18:18:13,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 18:18:13,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 18:18:13,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995871230] [2024-10-12 18:18:13,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 18:18:13,438 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 18:18:13,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:18:13,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 18:18:13,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 18:18:13,459 INFO L87 Difference]: Start difference. First operand has 117 states, 85 states have (on average 1.8) internal successors, (153), 105 states have internal predecessors, (153), 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 5.0) internal successors, (15), 2 states have internal predecessors, (15), 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) [2024-10-12 18:18:13,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:18:13,673 INFO L93 Difference]: Finished difference Result 231 states and 409 transitions. [2024-10-12 18:18:13,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 18:18:13,676 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 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 30 [2024-10-12 18:18:13,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:18:13,685 INFO L225 Difference]: With dead ends: 231 [2024-10-12 18:18:13,686 INFO L226 Difference]: Without dead ends: 112 [2024-10-12 18:18:13,691 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 [2024-10-12 18:18:13,695 INFO L432 NwaCegarLoop]: 97 mSDtfsCounter, 38 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-12 18:18:13,698 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 150 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-12 18:18:13,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2024-10-12 18:18:13,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2024-10-12 18:18:13,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 82 states have (on average 1.3048780487804879) internal successors, (107), 100 states have internal predecessors, (107), 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) [2024-10-12 18:18:13,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 141 transitions. [2024-10-12 18:18:13,735 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 141 transitions. Word has length 30 [2024-10-12 18:18:13,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:18:13,735 INFO L471 AbstractCegarLoop]: Abstraction has 112 states and 141 transitions. [2024-10-12 18:18:13,735 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 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) [2024-10-12 18:18:13,736 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 141 transitions. [2024-10-12 18:18:13,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-10-12 18:18:13,737 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:18:13,737 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] [2024-10-12 18:18:13,737 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-12 18:18:13,738 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:18:13,738 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:18:13,738 INFO L85 PathProgramCache]: Analyzing trace with hash 208543916, now seen corresponding path program 1 times [2024-10-12 18:18:13,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:18:13,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092553771] [2024-10-12 18:18:13,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:18:13,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:18:13,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:18:14,162 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 18:18:14,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:18:14,285 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 18:18:14,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:18:14,369 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-12 18:18:14,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:18:14,395 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-12 18:18:14,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:18:14,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092553771] [2024-10-12 18:18:14,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092553771] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:18:14,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1110375279] [2024-10-12 18:18:14,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:18:14,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:18:14,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:18:14,399 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) [2024-10-12 18:18:14,400 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-12 18:18:14,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:18:14,548 INFO L255 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-12 18:18:14,556 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:18:14,656 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-12 18:18:14,658 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 18:18:14,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1110375279] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 18:18:14,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 18:18:14,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 6 [2024-10-12 18:18:14,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688434217] [2024-10-12 18:18:14,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 18:18:14,661 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 18:18:14,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:18:14,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 18:18:14,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-12 18:18:14,662 INFO L87 Difference]: Start difference. First operand 112 states and 141 transitions. Second operand has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 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) [2024-10-12 18:18:14,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:18:14,785 INFO L93 Difference]: Finished difference Result 234 states and 308 transitions. [2024-10-12 18:18:14,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-12 18:18:14,786 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 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 31 [2024-10-12 18:18:14,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:18:14,791 INFO L225 Difference]: With dead ends: 234 [2024-10-12 18:18:14,792 INFO L226 Difference]: Without dead ends: 124 [2024-10-12 18:18:14,793 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-12 18:18:14,793 INFO L432 NwaCegarLoop]: 129 mSDtfsCounter, 12 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 492 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 [2024-10-12 18:18:14,794 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 492 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:18:14,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2024-10-12 18:18:14,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2024-10-12 18:18:14,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 89 states have (on average 1.2921348314606742) internal successors, (115), 107 states have internal predecessors, (115), 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) [2024-10-12 18:18:14,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 155 transitions. [2024-10-12 18:18:14,812 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 155 transitions. Word has length 31 [2024-10-12 18:18:14,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:18:14,813 INFO L471 AbstractCegarLoop]: Abstraction has 124 states and 155 transitions. [2024-10-12 18:18:14,813 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 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) [2024-10-12 18:18:14,813 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 155 transitions. [2024-10-12 18:18:14,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-10-12 18:18:14,815 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:18:14,815 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] [2024-10-12 18:18:14,830 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-12 18:18:15,015 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 [2024-10-12 18:18:15,016 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:18:15,017 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:18:15,017 INFO L85 PathProgramCache]: Analyzing trace with hash -1337816308, now seen corresponding path program 1 times [2024-10-12 18:18:15,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:18:15,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484918588] [2024-10-12 18:18:15,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:18:15,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:18:15,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:18:15,671 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 18:18:15,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:18:16,070 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 18:18:16,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:18:16,298 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 18:18:16,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:18:16,481 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-12 18:18:16,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:18:16,599 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-12 18:18:16,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:18:16,794 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 18:18:16,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:18:16,889 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-12 18:18:16,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:18:17,028 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-10-12 18:18:17,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:18:17,068 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 18:18:17,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:18:17,096 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-12 18:18:17,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:18:17,121 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-12 18:18:17,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:18:17,140 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 18:18:17,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:18:17,150 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-12 18:18:17,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:18:17,162 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 12 proven. 56 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-10-12 18:18:17,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:18:17,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484918588] [2024-10-12 18:18:17,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484918588] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:18:17,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1562088553] [2024-10-12 18:18:17,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:18:17,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:18:17,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:18:17,165 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) [2024-10-12 18:18:17,166 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-12 18:18:17,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:18:17,443 INFO L255 TraceCheckSpWp]: Trace formula consists of 974 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-10-12 18:18:17,448 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:18:17,506 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 [2024-10-12 18:18:17,558 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 68 proven. 6 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-10-12 18:18:17,558 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:18:18,226 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 [2024-10-12 18:18:18,249 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 13 proven. 60 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-10-12 18:18:18,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1562088553] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:18:18,250 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:18:18,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 19 [2024-10-12 18:18:18,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953520552] [2024-10-12 18:18:18,250 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:18:18,251 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-12 18:18:18,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:18:18,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-12 18:18:18,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2024-10-12 18:18:18,252 INFO L87 Difference]: Start difference. First operand 124 states and 155 transitions. Second operand has 19 states, 18 states have (on average 3.7777777777777777) internal successors, (68), 15 states have internal predecessors, (68), 4 states have call successors, (24), 5 states have call predecessors, (24), 4 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) [2024-10-12 18:18:18,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:18:18,894 INFO L93 Difference]: Finished difference Result 253 states and 323 transitions. [2024-10-12 18:18:18,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-12 18:18:18,895 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 3.7777777777777777) internal successors, (68), 15 states have internal predecessors, (68), 4 states have call successors, (24), 5 states have call predecessors, (24), 4 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) Word has length 91 [2024-10-12 18:18:18,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:18:18,896 INFO L225 Difference]: With dead ends: 253 [2024-10-12 18:18:18,897 INFO L226 Difference]: Without dead ends: 133 [2024-10-12 18:18:18,898 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=166, Invalid=704, Unknown=0, NotChecked=0, Total=870 [2024-10-12 18:18:18,898 INFO L432 NwaCegarLoop]: 88 mSDtfsCounter, 123 mSDsluCounter, 650 mSDsCounter, 0 mSdLazyCounter, 818 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 738 SdHoareTripleChecker+Invalid, 875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 818 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-12 18:18:18,899 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 738 Invalid, 875 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 818 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-12 18:18:18,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2024-10-12 18:18:18,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 132. [2024-10-12 18:18:18,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 96 states have (on average 1.2708333333333333) internal successors, (122), 114 states have internal predecessors, (122), 27 states have call successors, (27), 9 states have call predecessors, (27), 8 states have return successors, (14), 11 states have call predecessors, (14), 13 states have call successors, (14) [2024-10-12 18:18:18,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 163 transitions. [2024-10-12 18:18:18,920 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 163 transitions. Word has length 91 [2024-10-12 18:18:18,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:18:18,920 INFO L471 AbstractCegarLoop]: Abstraction has 132 states and 163 transitions. [2024-10-12 18:18:18,921 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 3.7777777777777777) internal successors, (68), 15 states have internal predecessors, (68), 4 states have call successors, (24), 5 states have call predecessors, (24), 4 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) [2024-10-12 18:18:18,921 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 163 transitions. [2024-10-12 18:18:18,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-10-12 18:18:18,922 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:18:18,922 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:18:18,953 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-12 18:18:19,123 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 [2024-10-12 18:18:19,124 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:18:19,124 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:18:19,124 INFO L85 PathProgramCache]: Analyzing trace with hash -786406196, now seen corresponding path program 1 times [2024-10-12 18:18:19,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:18:19,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026301973] [2024-10-12 18:18:19,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:18:19,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:18:19,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:18:19,658 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 18:18:19,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:18:20,129 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 18:18:20,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:18:20,300 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 18:18:20,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:18:20,445 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-12 18:18:20,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:18:20,480 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-12 18:18:20,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:18:20,496 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 18:18:20,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:18:20,506 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-12 18:18:20,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:18:20,515 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-10-12 18:18:20,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:18:20,715 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 18:18:20,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:18:20,920 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-12 18:18:20,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:18:20,965 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-12 18:18:20,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:18:20,990 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 18:18:20,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:18:20,998 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-12 18:18:21,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:18:21,008 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 25 proven. 19 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-10-12 18:18:21,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:18:21,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026301973] [2024-10-12 18:18:21,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026301973] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:18:21,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1428478192] [2024-10-12 18:18:21,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:18:21,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:18:21,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:18:21,012 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) [2024-10-12 18:18:21,013 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-12 18:18:21,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:18:21,353 INFO L255 TraceCheckSpWp]: Trace formula consists of 992 conjuncts, 96 conjuncts are in the unsatisfiable core [2024-10-12 18:18:21,363 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:18:21,421 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 [2024-10-12 18:18:32,299 INFO L349 Elim1Store]: treesize reduction 46, result has 24.6 percent of original size [2024-10-12 18:18:32,300 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 60 treesize of output 79 [2024-10-12 18:18:32,312 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 16 [2024-10-12 18:18:32,329 INFO L349 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2024-10-12 18:18:32,329 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 16 [2024-10-12 18:18:32,353 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 [2024-10-12 18:18:32,477 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 67 proven. 28 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-10-12 18:18:32,477 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:18:33,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1428478192] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:18:33,053 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-12 18:18:33,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 27] total 35 [2024-10-12 18:18:33,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113952626] [2024-10-12 18:18:33,054 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-12 18:18:33,054 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-10-12 18:18:33,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:18:33,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-10-12 18:18:33,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=1147, Unknown=8, NotChecked=0, Total=1260 [2024-10-12 18:18:33,056 INFO L87 Difference]: Start difference. First operand 132 states and 163 transitions. Second operand has 35 states, 25 states have (on average 2.8) internal successors, (70), 27 states have internal predecessors, (70), 16 states have call successors, (25), 5 states have call predecessors, (25), 11 states have return successors, (19), 13 states have call predecessors, (19), 14 states have call successors, (19) [2024-10-12 18:18:41,801 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-12 18:18:45,908 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-12 18:18:49,917 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-12 18:18:58,462 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-12 18:19:03,328 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-12 18:19:03,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:19:03,586 INFO L93 Difference]: Finished difference Result 339 states and 418 transitions. [2024-10-12 18:19:03,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-10-12 18:19:03,586 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 25 states have (on average 2.8) internal successors, (70), 27 states have internal predecessors, (70), 16 states have call successors, (25), 5 states have call predecessors, (25), 11 states have return successors, (19), 13 states have call predecessors, (19), 14 states have call successors, (19) Word has length 91 [2024-10-12 18:19:03,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:19:03,589 INFO L225 Difference]: With dead ends: 339 [2024-10-12 18:19:03,589 INFO L226 Difference]: Without dead ends: 205 [2024-10-12 18:19:03,591 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 743 ImplicationChecksByTransitivity, 19.6s TimeCoverageRelationStatistics Valid=313, Invalid=3448, Unknown=21, NotChecked=0, Total=3782 [2024-10-12 18:19:03,592 INFO L432 NwaCegarLoop]: 93 mSDtfsCounter, 186 mSDsluCounter, 2039 mSDsCounter, 0 mSdLazyCounter, 2354 mSolverCounterSat, 47 mSolverCounterUnsat, 49 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 2132 SdHoareTripleChecker+Invalid, 2450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 2354 IncrementalHoareTripleChecker+Invalid, 49 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.7s IncrementalHoareTripleChecker+Time [2024-10-12 18:19:03,592 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 2132 Invalid, 2450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 2354 Invalid, 49 Unknown, 0 Unchecked, 21.7s Time] [2024-10-12 18:19:03,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2024-10-12 18:19:03,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 168. [2024-10-12 18:19:03,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 127 states have (on average 1.2519685039370079) internal successors, (159), 144 states have internal predecessors, (159), 29 states have call successors, (29), 12 states have call predecessors, (29), 11 states have return successors, (15), 13 states have call predecessors, (15), 15 states have call successors, (15) [2024-10-12 18:19:03,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 203 transitions. [2024-10-12 18:19:03,605 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 203 transitions. Word has length 91 [2024-10-12 18:19:03,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:19:03,605 INFO L471 AbstractCegarLoop]: Abstraction has 168 states and 203 transitions. [2024-10-12 18:19:03,605 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 25 states have (on average 2.8) internal successors, (70), 27 states have internal predecessors, (70), 16 states have call successors, (25), 5 states have call predecessors, (25), 11 states have return successors, (19), 13 states have call predecessors, (19), 14 states have call successors, (19) [2024-10-12 18:19:03,605 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 203 transitions. [2024-10-12 18:19:03,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-10-12 18:19:03,606 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:19:03,606 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] [2024-10-12 18:19:03,622 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-12 18:19:03,810 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 [2024-10-12 18:19:03,811 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:19:03,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:19:03,811 INFO L85 PathProgramCache]: Analyzing trace with hash 67289600, now seen corresponding path program 1 times [2024-10-12 18:19:03,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:19:03,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960268427] [2024-10-12 18:19:03,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:19:03,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:19:03,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:19:06,343 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 18:19:06,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:19:08,259 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 18:19:08,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:19:08,561 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 18:19:08,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:19:08,945 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-12 18:19:08,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:19:09,344 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-12 18:19:09,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:19:14,041 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 18:19:14,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:19:14,203 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-12 18:19:14,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:19:14,499 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-10-12 18:19:14,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:19:15,266 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 18:19:15,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:19:16,026 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-12 18:19:16,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:19:16,529 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-12 18:19:16,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat