./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/heap-manipulation/dll_of_dll-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e8d55036 Calling Ultimate with: /usr/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 ../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.graphml --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 0.2.2-?-e8d5503-m [2023-02-15 19:27:14,718 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-15 19:27:14,720 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-15 19:27:14,751 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-15 19:27:14,751 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-15 19:27:14,754 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-15 19:27:14,756 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-15 19:27:14,760 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-15 19:27:14,762 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-15 19:27:14,766 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-15 19:27:14,767 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-15 19:27:14,769 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-15 19:27:14,769 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-15 19:27:14,771 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-15 19:27:14,773 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-15 19:27:14,774 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-15 19:27:14,775 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-15 19:27:14,777 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-15 19:27:14,778 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-15 19:27:14,782 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-15 19:27:14,783 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-15 19:27:14,784 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-15 19:27:14,785 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-15 19:27:14,786 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-15 19:27:14,793 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-15 19:27:14,794 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-15 19:27:14,795 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-15 19:27:14,796 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-15 19:27:14,797 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-15 19:27:14,797 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-15 19:27:14,798 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-15 19:27:14,798 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-15 19:27:14,800 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-15 19:27:14,800 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-15 19:27:14,801 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-15 19:27:14,801 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-15 19:27:14,802 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-15 19:27:14,802 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-15 19:27:14,802 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-15 19:27:14,803 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-15 19:27:14,804 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-15 19:27:14,805 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-15 19:27:14,837 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-15 19:27:14,838 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-15 19:27:14,838 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-15 19:27:14,838 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-15 19:27:14,839 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-15 19:27:14,839 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-15 19:27:14,840 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-15 19:27:14,840 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-15 19:27:14,840 INFO L138 SettingsManager]: * Use SBE=true [2023-02-15 19:27:14,841 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-15 19:27:14,841 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-15 19:27:14,842 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-15 19:27:14,842 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-15 19:27:14,842 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-15 19:27:14,842 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-15 19:27:14,843 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-15 19:27:14,843 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-15 19:27:14,843 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-15 19:27:14,843 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-15 19:27:14,843 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-15 19:27:14,844 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-15 19:27:14,844 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-15 19:27:14,844 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-15 19:27:14,844 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-15 19:27:14,844 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 19:27:14,845 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-15 19:27:14,845 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-15 19:27:14,845 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-15 19:27:14,845 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-15 19:27:14,845 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-15 19:27:14,846 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-15 19:27:14,846 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-15 19:27:14,846 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-15 19:27:14,846 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-15 19:27:14,846 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-15 19:27:14,847 INFO L138 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0e14b8baad7c8f50637b16b3adcb891ef363d7563e7c4e0e74695e7b8e3d1787 [2023-02-15 19:27:15,108 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-15 19:27:15,124 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-15 19:27:15,126 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-15 19:27:15,127 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-15 19:27:15,128 INFO L275 PluginConnector]: CDTParser initialized [2023-02-15 19:27:15,129 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/heap-manipulation/dll_of_dll-1.i [2023-02-15 19:27:16,224 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-15 19:27:16,445 INFO L351 CDTParser]: Found 1 translation units. [2023-02-15 19:27:16,446 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/heap-manipulation/dll_of_dll-1.i [2023-02-15 19:27:16,457 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fde7e30c9/4c81d8041ed3439da262199d163c5282/FLAGc88cbe2aa [2023-02-15 19:27:16,468 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fde7e30c9/4c81d8041ed3439da262199d163c5282 [2023-02-15 19:27:16,470 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-15 19:27:16,471 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-15 19:27:16,472 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-15 19:27:16,472 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-15 19:27:16,475 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-15 19:27:16,475 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 07:27:16" (1/1) ... [2023-02-15 19:27:16,476 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7837c26c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:27:16, skipping insertion in model container [2023-02-15 19:27:16,476 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 07:27:16" (1/1) ... [2023-02-15 19:27:16,482 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-15 19:27:16,515 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 19:27:16,711 WARN L237 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] [2023-02-15 19:27:16,766 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 19:27:16,777 INFO L203 MainTranslator]: Completed pre-run [2023-02-15 19:27:16,827 WARN L237 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] [2023-02-15 19:27:16,841 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 19:27:16,872 INFO L208 MainTranslator]: Completed translation [2023-02-15 19:27:16,872 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:27:16 WrapperNode [2023-02-15 19:27:16,873 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-15 19:27:16,874 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-15 19:27:16,874 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-15 19:27:16,874 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-15 19:27:16,880 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:27:16" (1/1) ... [2023-02-15 19:27:16,910 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:27:16" (1/1) ... [2023-02-15 19:27:16,932 INFO L138 Inliner]: procedures = 140, calls = 94, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 228 [2023-02-15 19:27:16,932 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-15 19:27:16,933 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-15 19:27:16,933 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-15 19:27:16,933 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-15 19:27:16,940 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:27:16" (1/1) ... [2023-02-15 19:27:16,941 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:27:16" (1/1) ... [2023-02-15 19:27:16,944 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:27:16" (1/1) ... [2023-02-15 19:27:16,945 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:27:16" (1/1) ... [2023-02-15 19:27:16,955 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:27:16" (1/1) ... [2023-02-15 19:27:16,961 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:27:16" (1/1) ... [2023-02-15 19:27:16,968 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:27:16" (1/1) ... [2023-02-15 19:27:16,970 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:27:16" (1/1) ... [2023-02-15 19:27:16,974 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-15 19:27:16,980 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-15 19:27:16,980 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-15 19:27:16,980 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-15 19:27:16,981 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:27:16" (1/1) ... [2023-02-15 19:27:16,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 19:27:17,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 19:27:17,038 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-02-15 19:27:17,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-02-15 19:27:17,072 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2023-02-15 19:27:17,072 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2023-02-15 19:27:17,072 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_base [2023-02-15 19:27:17,073 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_base [2023-02-15 19:27:17,073 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-02-15 19:27:17,073 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-15 19:27:17,073 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_master [2023-02-15 19:27:17,073 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_master [2023-02-15 19:27:17,074 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-02-15 19:27:17,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-02-15 19:27:17,074 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2023-02-15 19:27:17,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2023-02-15 19:27:17,074 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-02-15 19:27:17,074 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-15 19:27:17,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-02-15 19:27:17,075 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_generic [2023-02-15 19:27:17,075 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_generic [2023-02-15 19:27:17,075 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_slave [2023-02-15 19:27:17,075 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_slave [2023-02-15 19:27:17,076 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-15 19:27:17,076 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-15 19:27:17,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-15 19:27:17,209 INFO L235 CfgBuilder]: Building ICFG [2023-02-15 19:27:17,211 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-15 19:27:17,623 INFO L276 CfgBuilder]: Performing block encoding [2023-02-15 19:27:17,634 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-15 19:27:17,639 INFO L300 CfgBuilder]: Removed 38 assume(true) statements. [2023-02-15 19:27:17,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 07:27:17 BoogieIcfgContainer [2023-02-15 19:27:17,642 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-15 19:27:17,644 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-15 19:27:17,644 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-15 19:27:17,647 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-15 19:27:17,647 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 07:27:16" (1/3) ... [2023-02-15 19:27:17,647 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18a2c4cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 07:27:17, skipping insertion in model container [2023-02-15 19:27:17,648 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:27:16" (2/3) ... [2023-02-15 19:27:17,648 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18a2c4cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 07:27:17, skipping insertion in model container [2023-02-15 19:27:17,648 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 07:27:17" (3/3) ... [2023-02-15 19:27:17,651 INFO L112 eAbstractionObserver]: Analyzing ICFG dll_of_dll-1.i [2023-02-15 19:27:17,666 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-15 19:27:17,667 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-15 19:27:17,722 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-15 19:27:17,728 INFO L357 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, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@3067467b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-15 19:27:17,728 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-15 19:27:17,732 INFO L276 IsEmpty]: Start isEmpty. Operand has 128 states, 96 states have (on average 1.7083333333333333) internal successors, (164), 116 states have internal predecessors, (164), 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) [2023-02-15 19:27:17,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-02-15 19:27:17,742 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:27:17,743 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 19:27:17,744 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:27:17,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:27:17,750 INFO L85 PathProgramCache]: Analyzing trace with hash 760908611, now seen corresponding path program 1 times [2023-02-15 19:27:17,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:27:17,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235894238] [2023-02-15 19:27:17,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:27:17,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:27:17,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:27:18,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-15 19:27:18,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:27:18,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-15 19:27:18,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:27:18,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-15 19:27:18,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:27:18,156 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-02-15 19:27:18,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:27:18,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235894238] [2023-02-15 19:27:18,161 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235894238] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 19:27:18,161 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 19:27:18,161 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 19:27:18,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766555457] [2023-02-15 19:27:18,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 19:27:18,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 19:27:18,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:27:18,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 19:27:18,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 19:27:18,194 INFO L87 Difference]: Start difference. First operand has 128 states, 96 states have (on average 1.7083333333333333) internal successors, (164), 116 states have internal predecessors, (164), 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 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 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) [2023-02-15 19:27:18,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 19:27:18,387 INFO L93 Difference]: Finished difference Result 251 states and 429 transitions. [2023-02-15 19:27:18,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 19:27:18,390 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 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 37 [2023-02-15 19:27:18,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 19:27:18,397 INFO L225 Difference]: With dead ends: 251 [2023-02-15 19:27:18,397 INFO L226 Difference]: Without dead ends: 120 [2023-02-15 19:27:18,401 INFO L412 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 [2023-02-15 19:27:18,403 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 38 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 19:27:18,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 181 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 19:27:18,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2023-02-15 19:27:18,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2023-02-15 19:27:18,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 90 states have (on average 1.2777777777777777) internal successors, (115), 108 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) [2023-02-15 19:27:18,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 149 transitions. [2023-02-15 19:27:18,443 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 149 transitions. Word has length 37 [2023-02-15 19:27:18,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 19:27:18,444 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 149 transitions. [2023-02-15 19:27:18,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 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) [2023-02-15 19:27:18,445 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 149 transitions. [2023-02-15 19:27:18,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-02-15 19:27:18,447 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:27:18,447 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 19:27:18,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-15 19:27:18,448 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:27:18,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:27:18,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1675514385, now seen corresponding path program 1 times [2023-02-15 19:27:18,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:27:18,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803598163] [2023-02-15 19:27:18,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:27:18,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:27:18,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:27:18,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-15 19:27:18,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:27:19,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-15 19:27:19,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:27:19,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-15 19:27:19,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:27:19,133 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-15 19:27:19,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:27:19,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803598163] [2023-02-15 19:27:19,134 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803598163] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 19:27:19,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [963323810] [2023-02-15 19:27:19,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:27:19,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 19:27:19,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 19:27:19,137 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) [2023-02-15 19:27:19,152 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-15 19:27:19,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:27:19,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 13 conjunts are in the unsatisfiable core [2023-02-15 19:27:19,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 19:27:19,468 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-15 19:27:19,468 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 19:27:19,668 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-15 19:27:19,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [963323810] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 19:27:19,671 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 19:27:19,672 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5] total 12 [2023-02-15 19:27:19,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006144526] [2023-02-15 19:27:19,673 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 19:27:19,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-15 19:27:19,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:27:19,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-15 19:27:19,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2023-02-15 19:27:19,676 INFO L87 Difference]: Start difference. First operand 120 states and 149 transitions. Second operand has 12 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 6 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2023-02-15 19:27:20,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 19:27:20,127 INFO L93 Difference]: Finished difference Result 250 states and 324 transitions. [2023-02-15 19:27:20,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-15 19:27:20,128 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 6 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) Word has length 38 [2023-02-15 19:27:20,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 19:27:20,130 INFO L225 Difference]: With dead ends: 250 [2023-02-15 19:27:20,130 INFO L226 Difference]: Without dead ends: 133 [2023-02-15 19:27:20,131 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 77 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2023-02-15 19:27:20,132 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 52 mSDsluCounter, 928 mSDsCounter, 0 mSdLazyCounter, 594 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 1037 SdHoareTripleChecker+Invalid, 622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-15 19:27:20,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 1037 Invalid, 622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 594 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-15 19:27:20,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2023-02-15 19:27:20,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2023-02-15 19:27:20,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 98 states have (on average 1.2653061224489797) internal successors, (124), 116 states have internal predecessors, (124), 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) [2023-02-15 19:27:20,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 164 transitions. [2023-02-15 19:27:20,147 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 164 transitions. Word has length 38 [2023-02-15 19:27:20,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 19:27:20,147 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 164 transitions. [2023-02-15 19:27:20,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 6 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2023-02-15 19:27:20,147 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 164 transitions. [2023-02-15 19:27:20,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-02-15 19:27:20,150 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:27:20,150 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 19:27:20,159 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-15 19:27:20,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 19:27:20,357 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:27:20,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:27:20,357 INFO L85 PathProgramCache]: Analyzing trace with hash 800158065, now seen corresponding path program 1 times [2023-02-15 19:27:20,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:27:20,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800519249] [2023-02-15 19:27:20,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:27:20,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:27:20,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:27:21,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-15 19:27:21,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:27:21,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-15 19:27:21,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:27:21,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-15 19:27:21,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:27:21,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-15 19:27:21,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:27:21,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-02-15 19:27:21,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:27:21,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-15 19:27:21,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:27:22,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-15 19:27:22,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:27:22,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-02-15 19:27:22,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:27:22,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-15 19:27:22,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:27:22,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-15 19:27:22,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:27:23,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-02-15 19:27:23,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:27:23,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-15 19:27:23,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:27:23,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-15 19:27:23,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:27:23,651 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 75 proven. 8 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2023-02-15 19:27:23,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:27:23,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800519249] [2023-02-15 19:27:23,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800519249] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 19:27:23,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [955743462] [2023-02-15 19:27:23,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:27:23,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 19:27:23,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 19:27:23,657 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) [2023-02-15 19:27:23,682 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-15 19:27:23,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:27:23,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 964 conjuncts, 45 conjunts are in the unsatisfiable core [2023-02-15 19:27:23,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 19:27:24,153 INFO L321 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2023-02-15 19:27:24,154 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 74 [2023-02-15 19:27:24,165 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-02-15 19:27:24,173 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2023-02-15 19:27:24,202 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 19 [2023-02-15 19:27:24,206 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2023-02-15 19:27:24,350 INFO L350 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 [2023-02-15 19:27:24,387 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 33 proven. 5 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2023-02-15 19:27:24,388 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 19:27:24,777 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 19:27:24,778 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 218 treesize of output 215 [2023-02-15 19:27:24,783 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 250 treesize of output 242 [2023-02-15 19:27:24,790 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 242 treesize of output 238 [2023-02-15 19:27:24,830 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2023-02-15 19:27:24,843 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2023-02-15 19:27:24,867 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 19:27:24,868 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 104 treesize of output 107 [2023-02-15 19:27:24,871 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 116 [2023-02-15 19:27:24,875 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 116 treesize of output 114 [2023-02-15 19:27:24,915 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2023-02-15 19:27:24,925 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2023-02-15 19:27:25,045 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 32 proven. 2 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-02-15 19:27:25,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [955743462] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 19:27:25,046 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 19:27:25,046 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 16, 15] total 29 [2023-02-15 19:27:25,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534989856] [2023-02-15 19:27:25,047 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 19:27:25,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-02-15 19:27:25,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:27:25,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-02-15 19:27:25,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=750, Unknown=0, NotChecked=0, Total=812 [2023-02-15 19:27:25,049 INFO L87 Difference]: Start difference. First operand 133 states and 164 transitions. Second operand has 29 states, 25 states have (on average 3.16) internal successors, (79), 25 states have internal predecessors, (79), 9 states have call successors, (20), 4 states have call predecessors, (20), 6 states have return successors, (19), 9 states have call predecessors, (19), 7 states have call successors, (19) [2023-02-15 19:27:26,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 19:27:26,643 INFO L93 Difference]: Finished difference Result 331 states and 417 transitions. [2023-02-15 19:27:26,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-02-15 19:27:26,646 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 25 states have (on average 3.16) internal successors, (79), 25 states have internal predecessors, (79), 9 states have call successors, (20), 4 states have call predecessors, (20), 6 states have return successors, (19), 9 states have call predecessors, (19), 7 states have call successors, (19) Word has length 110 [2023-02-15 19:27:26,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 19:27:26,648 INFO L225 Difference]: With dead ends: 331 [2023-02-15 19:27:26,648 INFO L226 Difference]: Without dead ends: 203 [2023-02-15 19:27:26,650 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 239 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 309 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=201, Invalid=2249, Unknown=0, NotChecked=0, Total=2450 [2023-02-15 19:27:26,651 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 295 mSDsluCounter, 1635 mSDsCounter, 0 mSdLazyCounter, 1845 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 1726 SdHoareTripleChecker+Invalid, 1902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1845 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-02-15 19:27:26,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [297 Valid, 1726 Invalid, 1902 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1845 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-02-15 19:27:26,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2023-02-15 19:27:26,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 161. [2023-02-15 19:27:26,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 124 states have (on average 1.2580645161290323) internal successors, (156), 142 states have internal predecessors, (156), 27 states have call successors, (27), 9 states have call predecessors, (27), 9 states have return successors, (14), 11 states have call predecessors, (14), 13 states have call successors, (14) [2023-02-15 19:27:26,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 197 transitions. [2023-02-15 19:27:26,671 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 197 transitions. Word has length 110 [2023-02-15 19:27:26,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 19:27:26,673 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 197 transitions. [2023-02-15 19:27:26,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 25 states have (on average 3.16) internal successors, (79), 25 states have internal predecessors, (79), 9 states have call successors, (20), 4 states have call predecessors, (20), 6 states have return successors, (19), 9 states have call predecessors, (19), 7 states have call successors, (19) [2023-02-15 19:27:26,673 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 197 transitions. [2023-02-15 19:27:26,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-02-15 19:27:26,681 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:27:26,681 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 19:27:26,695 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-15 19:27:26,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-02-15 19:27:26,890 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:27:26,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:27:26,890 INFO L85 PathProgramCache]: Analyzing trace with hash 1398318913, now seen corresponding path program 1 times [2023-02-15 19:27:26,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:27:26,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087139092] [2023-02-15 19:27:26,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:27:26,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:27:26,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:27:28,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-15 19:27:28,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:27:29,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-15 19:27:29,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:27:29,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-15 19:27:29,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:27:29,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-15 19:27:29,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:27:29,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-02-15 19:27:29,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:27:29,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-15 19:27:29,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:27:29,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-15 19:27:29,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:27:29,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-02-15 19:27:29,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:27:30,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-15 19:27:30,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:27:30,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-15 19:27:30,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:27:30,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-02-15 19:27:30,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:27:30,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-15 19:27:30,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:27:30,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-15 19:27:30,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:27:30,888 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 27 proven. 23 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-02-15 19:27:30,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:27:30,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087139092] [2023-02-15 19:27:30,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087139092] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 19:27:30,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1112396520] [2023-02-15 19:27:30,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:27:30,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 19:27:30,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 19:27:30,893 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) [2023-02-15 19:27:30,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-15 19:27:31,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:27:31,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 988 conjuncts, 58 conjunts are in the unsatisfiable core [2023-02-15 19:27:31,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 19:27:31,394 INFO L321 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2023-02-15 19:27:31,394 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 74 [2023-02-15 19:27:31,399 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-02-15 19:27:31,416 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2023-02-15 19:27:31,453 INFO L321 Elim1Store]: treesize reduction 25, result has 3.8 percent of original size [2023-02-15 19:27:31,453 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 26 [2023-02-15 19:27:31,455 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 15 [2023-02-15 19:27:31,669 WARN L859 $PredicateComparison]: unable to prove that (and (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_dll_create_generic_~#dll~0.base|) |c_dll_create_generic_~#dll~0.offset|))) (or (and (exists ((v_DerPreprocessor_5 (Array Int Int)) (v_DerPreprocessor_4 (Array Int Int))) (and (= (select v_DerPreprocessor_5 |c_dll_create_generic_~#dll~0.offset|) .cse0) (= (select (store (store (store (store |c_#memory_$Pointer$.base| .cse0 v_DerPreprocessor_4) |c_dll_create_generic_~#dll~0.base| v_DerPreprocessor_5) .cse0 v_DerPreprocessor_4) |c_dll_create_generic_~#dll~0.base| v_DerPreprocessor_5) .cse0) (select |c_#memory_$Pointer$.base| .cse0)))) (not (= 0 .cse0))) (and (= .cse0 |c_dll_create_generic_~#dll~0.base|) (not (= 0 |c_dll_create_generic_~#dll~0.base|))))) (= 0 |c_dll_create_generic_~#dll~0.offset|) (< |c_#StackHeapBarrier| |c_dll_create_generic_~#dll~0.base|)) is different from true [2023-02-15 19:27:31,684 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 19:27:31,685 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 59 [2023-02-15 19:27:31,698 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2023-02-15 19:27:31,848 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2896 (Array Int Int)) (|dll_insert_master_~item~1#1.base| Int)) (and (= |c_dll_insert_master_~next~3#1.base| (select (select (store |c_old(#memory_$Pointer$.base)| |dll_insert_master_~item~1#1.base| v_ArrVal_2896) |c_dll_insert_master_#in~dll#1.base|) |c_dll_insert_master_#in~dll#1.offset|)) (< |dll_insert_master_~item~1#1.base| |c_#StackHeapBarrier|))) is different from true [2023-02-15 19:27:31,909 INFO L350 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 22 treesize of output 18 [2023-02-15 19:27:31,912 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2023-02-15 19:27:31,941 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2896 (Array Int Int)) (|dll_insert_master_~item~1#1.base| Int)) (and (< |dll_insert_master_~item~1#1.base| |c_#StackHeapBarrier|) (= 0 (select (select (store |c_old(#memory_$Pointer$.base)| |dll_insert_master_~item~1#1.base| v_ArrVal_2896) |c_##fun~$Pointer$~TO~VOID_#in~10#1.base|) |c_##fun~$Pointer$~TO~VOID_#in~10#1.offset|)))) is different from true [2023-02-15 19:27:31,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:27:31,962 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-02-15 19:27:31,962 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 75 treesize of output 56 [2023-02-15 19:27:31,968 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 39 [2023-02-15 19:27:31,971 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 31 proven. 21 refuted. 1 times theorem prover too weak. 78 trivial. 3 not checked. [2023-02-15 19:27:31,972 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 19:27:32,279 WARN L837 $PredicateComparison]: unable to prove that (forall ((|v_dll_insert_master_alloc_or_die_master_~ptr~1#1.base_43| Int) (v_ArrVal_2925 (Array Int Int))) (or (not (= 0 (select (select (store |c_#memory_$Pointer$.base| |v_dll_insert_master_alloc_or_die_master_~ptr~1#1.base_43| v_ArrVal_2925) |c_dll_create_generic_~#dll~0.base|) |c_dll_create_generic_~#dll~0.offset|))) (not (< |v_dll_insert_master_alloc_or_die_master_~ptr~1#1.base_43| |c_#StackHeapBarrier|)))) is different from false [2023-02-15 19:27:32,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1112396520] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 19:27:32,281 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 19:27:32,281 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 17] total 37 [2023-02-15 19:27:32,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129945286] [2023-02-15 19:27:32,281 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 19:27:32,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-02-15 19:27:32,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:27:32,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-02-15 19:27:32,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=1036, Unknown=18, NotChecked=268, Total=1406 [2023-02-15 19:27:32,284 INFO L87 Difference]: Start difference. First operand 161 states and 197 transitions. Second operand has 37 states, 32 states have (on average 2.5) internal successors, (80), 31 states have internal predecessors, (80), 13 states have call successors, (23), 5 states have call predecessors, (23), 11 states have return successors, (17), 13 states have call predecessors, (17), 11 states have call successors, (17) [2023-02-15 19:27:36,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 19:27:36,846 INFO L93 Difference]: Finished difference Result 330 states and 406 transitions. [2023-02-15 19:27:36,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-02-15 19:27:36,847 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 32 states have (on average 2.5) internal successors, (80), 31 states have internal predecessors, (80), 13 states have call successors, (23), 5 states have call predecessors, (23), 11 states have return successors, (17), 13 states have call predecessors, (17), 11 states have call successors, (17) Word has length 113 [2023-02-15 19:27:36,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 19:27:36,849 INFO L225 Difference]: With dead ends: 330 [2023-02-15 19:27:36,849 INFO L226 Difference]: Without dead ends: 173 [2023-02-15 19:27:36,851 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 144 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=211, Invalid=2424, Unknown=33, NotChecked=412, Total=3080 [2023-02-15 19:27:36,852 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 121 mSDsluCounter, 2104 mSDsCounter, 0 mSdLazyCounter, 2524 mSolverCounterSat, 52 mSolverCounterUnsat, 28 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 2212 SdHoareTripleChecker+Invalid, 3088 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 2524 IncrementalHoareTripleChecker+Invalid, 28 IncrementalHoareTripleChecker+Unknown, 484 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-02-15 19:27:36,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 2212 Invalid, 3088 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 2524 Invalid, 28 Unknown, 484 Unchecked, 1.6s Time] [2023-02-15 19:27:36,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2023-02-15 19:27:36,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 170. [2023-02-15 19:27:36,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 129 states have (on average 1.248062015503876) internal successors, (161), 148 states have internal predecessors, (161), 29 states have call successors, (29), 10 states have call predecessors, (29), 11 states have return successors, (18), 13 states have call predecessors, (18), 15 states have call successors, (18) [2023-02-15 19:27:36,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 208 transitions. [2023-02-15 19:27:36,869 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 208 transitions. Word has length 113 [2023-02-15 19:27:36,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 19:27:36,870 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 208 transitions. [2023-02-15 19:27:36,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 32 states have (on average 2.5) internal successors, (80), 31 states have internal predecessors, (80), 13 states have call successors, (23), 5 states have call predecessors, (23), 11 states have return successors, (17), 13 states have call predecessors, (17), 11 states have call successors, (17) [2023-02-15 19:27:36,870 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 208 transitions. [2023-02-15 19:27:36,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-02-15 19:27:36,872 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:27:36,872 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 19:27:36,889 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-15 19:27:37,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 19:27:37,080 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:27:37,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:27:37,081 INFO L85 PathProgramCache]: Analyzing trace with hash 1829442305, now seen corresponding path program 1 times [2023-02-15 19:27:37,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:27:37,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502774318] [2023-02-15 19:27:37,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:27:37,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:27:37,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:27:37,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-15 19:27:37,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:27:38,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-15 19:27:38,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:27:38,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-15 19:27:38,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:27:38,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-15 19:27:38,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:27:39,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-02-15 19:27:39,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:27:39,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-15 19:27:39,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:27:39,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-15 19:27:39,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:27:39,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-02-15 19:27:39,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:27:39,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-15 19:27:39,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:27:39,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-15 19:27:39,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:27:39,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-02-15 19:27:39,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:27:39,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-15 19:27:39,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:27:39,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-15 19:27:39,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:27:39,144 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 15 proven. 23 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2023-02-15 19:27:39,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:27:39,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502774318] [2023-02-15 19:27:39,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502774318] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 19:27:39,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1765957891] [2023-02-15 19:27:39,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:27:39,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 19:27:39,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 19:27:39,149 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 19:27:39,152 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-15 19:27:39,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:27:39,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 1006 conjuncts, 57 conjunts are in the unsatisfiable core [2023-02-15 19:27:39,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 19:27:39,604 INFO L350 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 7 treesize of output 3 [2023-02-15 19:27:39,608 INFO L350 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 7 treesize of output 3 [2023-02-15 19:27:39,883 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 94 proven. 5 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-02-15 19:27:39,890 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 19:27:40,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1765957891] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 19:27:40,431 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 19:27:40,431 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 16 [2023-02-15 19:27:40,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036325967] [2023-02-15 19:27:40,432 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 19:27:40,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-02-15 19:27:40,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:27:40,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-02-15 19:27:40,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=218, Unknown=12, NotChecked=0, Total=272 [2023-02-15 19:27:40,434 INFO L87 Difference]: Start difference. First operand 170 states and 208 transitions. Second operand has 16 states, 14 states have (on average 5.785714285714286) internal successors, (81), 14 states have internal predecessors, (81), 8 states have call successors, (24), 4 states have call predecessors, (24), 4 states have return successors, (18), 5 states have call predecessors, (18), 8 states have call successors, (18) [2023-02-15 19:27:43,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 19:27:43,389 INFO L93 Difference]: Finished difference Result 330 states and 402 transitions. [2023-02-15 19:27:43,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-02-15 19:27:43,390 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 5.785714285714286) internal successors, (81), 14 states have internal predecessors, (81), 8 states have call successors, (24), 4 states have call predecessors, (24), 4 states have return successors, (18), 5 states have call predecessors, (18), 8 states have call successors, (18) Word has length 113 [2023-02-15 19:27:43,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 19:27:43,391 INFO L225 Difference]: With dead ends: 330 [2023-02-15 19:27:43,391 INFO L226 Difference]: Without dead ends: 170 [2023-02-15 19:27:43,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 194 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=64, Invalid=343, Unknown=13, NotChecked=0, Total=420 [2023-02-15 19:27:43,392 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 51 mSDsluCounter, 812 mSDsCounter, 0 mSdLazyCounter, 950 mSolverCounterSat, 16 mSolverCounterUnsat, 16 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 918 SdHoareTripleChecker+Invalid, 982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 950 IncrementalHoareTripleChecker+Invalid, 16 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-02-15 19:27:43,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 918 Invalid, 982 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 950 Invalid, 16 Unknown, 0 Unchecked, 0.7s Time] [2023-02-15 19:27:43,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2023-02-15 19:27:43,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2023-02-15 19:27:43,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 129 states have (on average 1.248062015503876) internal successors, (161), 148 states have internal predecessors, (161), 29 states have call successors, (29), 10 states have call predecessors, (29), 11 states have return successors, (16), 13 states have call predecessors, (16), 15 states have call successors, (16) [2023-02-15 19:27:43,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 206 transitions. [2023-02-15 19:27:43,410 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 206 transitions. Word has length 113 [2023-02-15 19:27:43,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 19:27:43,414 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 206 transitions. [2023-02-15 19:27:43,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 5.785714285714286) internal successors, (81), 14 states have internal predecessors, (81), 8 states have call successors, (24), 4 states have call predecessors, (24), 4 states have return successors, (18), 5 states have call predecessors, (18), 8 states have call successors, (18) [2023-02-15 19:27:43,414 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 206 transitions. [2023-02-15 19:27:43,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-02-15 19:27:43,417 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:27:43,418 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 19:27:43,428 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-15 19:27:43,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 19:27:43,626 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:27:43,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:27:43,626 INFO L85 PathProgramCache]: Analyzing trace with hash 522299907, now seen corresponding path program 1 times [2023-02-15 19:27:43,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:27:43,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815669898] [2023-02-15 19:27:43,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:27:43,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:27:43,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:27:48,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-15 19:27:48,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:27:50,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-15 19:27:50,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:27:51,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-15 19:27:51,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:27:51,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-15 19:27:51,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:27:52,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-02-15 19:27:52,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat