./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 7e1ff0e6 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-?-7e1ff0e [2023-02-14 22:37:40,198 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-14 22:37:40,200 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-14 22:37:40,233 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-14 22:37:40,234 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-14 22:37:40,236 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-14 22:37:40,238 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-14 22:37:40,240 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-14 22:37:40,241 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-14 22:37:40,246 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-14 22:37:40,247 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-14 22:37:40,249 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-14 22:37:40,249 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-14 22:37:40,251 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-14 22:37:40,252 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-14 22:37:40,253 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-14 22:37:40,254 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-14 22:37:40,255 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-14 22:37:40,256 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-14 22:37:40,260 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-14 22:37:40,261 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-14 22:37:40,262 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-14 22:37:40,262 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-14 22:37:40,263 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-14 22:37:40,269 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-14 22:37:40,270 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-14 22:37:40,270 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-14 22:37:40,271 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-14 22:37:40,271 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-14 22:37:40,273 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-14 22:37:40,273 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-14 22:37:40,273 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-14 22:37:40,274 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-14 22:37:40,275 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-14 22:37:40,275 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-14 22:37:40,276 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-14 22:37:40,276 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-14 22:37:40,276 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-14 22:37:40,276 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-14 22:37:40,277 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-14 22:37:40,278 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-14 22:37:40,278 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-14 22:37:40,312 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-14 22:37:40,312 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-14 22:37:40,312 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-14 22:37:40,312 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-14 22:37:40,313 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-14 22:37:40,313 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-14 22:37:40,314 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-14 22:37:40,314 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-14 22:37:40,314 INFO L138 SettingsManager]: * Use SBE=true [2023-02-14 22:37:40,314 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-14 22:37:40,315 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-14 22:37:40,315 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-14 22:37:40,315 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-14 22:37:40,315 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-14 22:37:40,315 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-14 22:37:40,316 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-14 22:37:40,316 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-14 22:37:40,316 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-14 22:37:40,316 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-14 22:37:40,316 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-14 22:37:40,316 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-14 22:37:40,316 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-14 22:37:40,317 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-14 22:37:40,317 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-14 22:37:40,317 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-14 22:37:40,317 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-14 22:37:40,317 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-14 22:37:40,317 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-14 22:37:40,317 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-14 22:37:40,318 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-14 22:37:40,318 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-14 22:37:40,318 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-14 22:37:40,318 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-14 22:37:40,318 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-14 22:37:40,318 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-14 22:37:40,319 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0e14b8baad7c8f50637b16b3adcb891ef363d7563e7c4e0e74695e7b8e3d1787 [2023-02-14 22:37:40,497 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-14 22:37:40,514 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-14 22:37:40,516 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-14 22:37:40,517 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-14 22:37:40,518 INFO L275 PluginConnector]: CDTParser initialized [2023-02-14 22:37:40,519 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/heap-manipulation/dll_of_dll-1.i [2023-02-14 22:37:41,393 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-14 22:37:41,619 INFO L351 CDTParser]: Found 1 translation units. [2023-02-14 22:37:41,619 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/heap-manipulation/dll_of_dll-1.i [2023-02-14 22:37:41,626 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b70625078/f304d1fb2dbf4bc59dfef045920e3fc5/FLAG7238b4b1e [2023-02-14 22:37:41,645 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b70625078/f304d1fb2dbf4bc59dfef045920e3fc5 [2023-02-14 22:37:41,647 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-14 22:37:41,648 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-14 22:37:41,648 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-14 22:37:41,649 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-14 22:37:41,651 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-14 22:37:41,651 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 10:37:41" (1/1) ... [2023-02-14 22:37:41,652 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@916fb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:37:41, skipping insertion in model container [2023-02-14 22:37:41,652 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 10:37:41" (1/1) ... [2023-02-14 22:37:41,660 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-14 22:37:41,698 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-14 22:37:41,839 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] [2023-02-14 22:37:41,863 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-14 22:37:41,870 INFO L203 MainTranslator]: Completed pre-run [2023-02-14 22:37:41,889 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] [2023-02-14 22:37:41,900 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-14 22:37:41,918 INFO L208 MainTranslator]: Completed translation [2023-02-14 22:37:41,919 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:37:41 WrapperNode [2023-02-14 22:37:41,919 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-14 22:37:41,920 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-14 22:37:41,920 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-14 22:37:41,920 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-14 22:37:41,924 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:37:41" (1/1) ... [2023-02-14 22:37:41,934 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:37:41" (1/1) ... [2023-02-14 22:37:41,949 INFO L138 Inliner]: procedures = 140, calls = 94, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 228 [2023-02-14 22:37:41,950 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-14 22:37:41,951 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-14 22:37:41,951 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-14 22:37:41,951 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-14 22:37:41,957 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:37:41" (1/1) ... [2023-02-14 22:37:41,958 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:37:41" (1/1) ... [2023-02-14 22:37:41,964 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:37:41" (1/1) ... [2023-02-14 22:37:41,965 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:37:41" (1/1) ... [2023-02-14 22:37:41,979 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:37:41" (1/1) ... [2023-02-14 22:37:41,984 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:37:41" (1/1) ... [2023-02-14 22:37:41,985 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:37:41" (1/1) ... [2023-02-14 22:37:41,986 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:37:41" (1/1) ... [2023-02-14 22:37:41,989 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-14 22:37:42,002 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-14 22:37:42,002 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-14 22:37:42,002 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-14 22:37:42,003 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:37:41" (1/1) ... [2023-02-14 22:37:42,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-14 22:37:42,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 22:37:42,024 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) [2023-02-14 22:37:42,041 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 [2023-02-14 22:37:42,052 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2023-02-14 22:37:42,053 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2023-02-14 22:37:42,053 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_base [2023-02-14 22:37:42,053 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_base [2023-02-14 22:37:42,053 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-02-14 22:37:42,053 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-14 22:37:42,053 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_master [2023-02-14 22:37:42,054 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_master [2023-02-14 22:37:42,054 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-02-14 22:37:42,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-02-14 22:37:42,054 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2023-02-14 22:37:42,054 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2023-02-14 22:37:42,054 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-02-14 22:37:42,054 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-14 22:37:42,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-02-14 22:37:42,054 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_generic [2023-02-14 22:37:42,055 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_generic [2023-02-14 22:37:42,055 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_slave [2023-02-14 22:37:42,055 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_slave [2023-02-14 22:37:42,055 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-14 22:37:42,055 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-14 22:37:42,055 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-14 22:37:42,178 INFO L235 CfgBuilder]: Building ICFG [2023-02-14 22:37:42,179 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-14 22:37:42,434 INFO L276 CfgBuilder]: Performing block encoding [2023-02-14 22:37:42,439 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-14 22:37:42,439 INFO L300 CfgBuilder]: Removed 38 assume(true) statements. [2023-02-14 22:37:42,441 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 10:37:42 BoogieIcfgContainer [2023-02-14 22:37:42,441 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-14 22:37:42,442 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-14 22:37:42,442 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-14 22:37:42,444 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-14 22:37:42,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.02 10:37:41" (1/3) ... [2023-02-14 22:37:42,445 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b6e7bef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 10:37:42, skipping insertion in model container [2023-02-14 22:37:42,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:37:41" (2/3) ... [2023-02-14 22:37:42,445 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b6e7bef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 10:37:42, skipping insertion in model container [2023-02-14 22:37:42,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 10:37:42" (3/3) ... [2023-02-14 22:37:42,446 INFO L112 eAbstractionObserver]: Analyzing ICFG dll_of_dll-1.i [2023-02-14 22:37:42,457 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-14 22:37:42,458 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-14 22:37:42,491 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-14 22:37:42,495 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;@589018e5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-14 22:37:42,495 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-14 22:37:42,498 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) [2023-02-14 22:37:42,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-02-14 22:37:42,504 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 22:37:42,504 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] [2023-02-14 22:37:42,504 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 22:37:42,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 22:37:42,508 INFO L85 PathProgramCache]: Analyzing trace with hash 760908611, now seen corresponding path program 1 times [2023-02-14 22:37:42,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 22:37:42,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290463854] [2023-02-14 22:37:42,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 22:37:42,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 22:37:42,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:37:42,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 22:37:42,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:37:42,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-14 22:37:42,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:37:42,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-14 22:37:42,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:37:42,814 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-02-14 22:37:42,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 22:37:42,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290463854] [2023-02-14 22:37:42,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290463854] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 22:37:42,815 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 22:37:42,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-14 22:37:42,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197546033] [2023-02-14 22:37:42,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 22:37:42,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-14 22:37:42,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 22:37:42,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-14 22:37:42,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 22:37:42,843 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) [2023-02-14 22:37:43,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 22:37:43,048 INFO L93 Difference]: Finished difference Result 251 states and 429 transitions. [2023-02-14 22:37:43,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-14 22:37:43,051 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 [2023-02-14 22:37:43,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 22:37:43,060 INFO L225 Difference]: With dead ends: 251 [2023-02-14 22:37:43,060 INFO L226 Difference]: Without dead ends: 120 [2023-02-14 22:37:43,067 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 [2023-02-14 22:37:43,072 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 [2023-02-14 22:37:43,073 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] [2023-02-14 22:37:43,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2023-02-14 22:37:43,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2023-02-14 22:37:43,103 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) [2023-02-14 22:37:43,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 149 transitions. [2023-02-14 22:37:43,105 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 149 transitions. Word has length 37 [2023-02-14 22:37:43,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 22:37:43,106 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 149 transitions. [2023-02-14 22:37:43,106 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) [2023-02-14 22:37:43,106 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 149 transitions. [2023-02-14 22:37:43,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-02-14 22:37:43,107 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 22:37:43,108 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] [2023-02-14 22:37:43,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-14 22:37:43,108 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 22:37:43,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 22:37:43,109 INFO L85 PathProgramCache]: Analyzing trace with hash 1675514385, now seen corresponding path program 1 times [2023-02-14 22:37:43,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 22:37:43,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347761080] [2023-02-14 22:37:43,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 22:37:43,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 22:37:43,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:37:43,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 22:37:43,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:37:43,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-14 22:37:43,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:37:43,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-14 22:37:43,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:37:43,700 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-14 22:37:43,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 22:37:43,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347761080] [2023-02-14 22:37:43,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347761080] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 22:37:43,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [423828279] [2023-02-14 22:37:43,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 22:37:43,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 22:37:43,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 22:37:43,707 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) [2023-02-14 22:37:43,709 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-14 22:37:43,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:37:43,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 13 conjunts are in the unsatisfiable core [2023-02-14 22:37:43,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 22:37:43,987 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-14 22:37:43,988 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 22:37:44,159 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-14 22:37:44,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [423828279] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 22:37:44,160 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 22:37:44,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5] total 12 [2023-02-14 22:37:44,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39143122] [2023-02-14 22:37:44,160 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 22:37:44,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-14 22:37:44,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 22:37:44,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-14 22:37:44,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2023-02-14 22:37:44,162 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) [2023-02-14 22:37:44,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 22:37:44,536 INFO L93 Difference]: Finished difference Result 250 states and 324 transitions. [2023-02-14 22:37:44,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-14 22:37:44,537 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 [2023-02-14 22:37:44,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 22:37:44,538 INFO L225 Difference]: With dead ends: 250 [2023-02-14 22:37:44,538 INFO L226 Difference]: Without dead ends: 133 [2023-02-14 22:37:44,539 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 77 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2023-02-14 22:37:44,539 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 52 mSDsluCounter, 928 mSDsCounter, 0 mSdLazyCounter, 594 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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 [2023-02-14 22:37:44,540 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] [2023-02-14 22:37:44,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2023-02-14 22:37:44,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2023-02-14 22:37:44,550 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) [2023-02-14 22:37:44,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 164 transitions. [2023-02-14 22:37:44,551 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 164 transitions. Word has length 38 [2023-02-14 22:37:44,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 22:37:44,551 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 164 transitions. [2023-02-14 22:37:44,551 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) [2023-02-14 22:37:44,551 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 164 transitions. [2023-02-14 22:37:44,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-02-14 22:37:44,553 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 22:37:44,553 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] [2023-02-14 22:37:44,561 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-14 22:37:44,758 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 [2023-02-14 22:37:44,759 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 22:37:44,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 22:37:44,759 INFO L85 PathProgramCache]: Analyzing trace with hash 800158065, now seen corresponding path program 1 times [2023-02-14 22:37:44,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 22:37:44,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888250331] [2023-02-14 22:37:44,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 22:37:44,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 22:37:44,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:37:45,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 22:37:45,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:37:46,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-14 22:37:46,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:37:46,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 22:37:46,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:37:46,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 22:37:46,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:37:46,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-02-14 22:37:46,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:37:46,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-14 22:37:46,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:37:46,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-14 22:37:46,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:37:46,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-02-14 22:37:46,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:37:46,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 22:37:46,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:37:46,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 22:37:46,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:37:47,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-02-14 22:37:47,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:37:47,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-14 22:37:47,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:37:47,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-14 22:37:47,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:37:47,093 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 27 proven. 23 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-02-14 22:37:47,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 22:37:47,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888250331] [2023-02-14 22:37:47,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888250331] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 22:37:47,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [575078213] [2023-02-14 22:37:47,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 22:37:47,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 22:37:47,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 22:37:47,098 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) [2023-02-14 22:37:47,100 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-14 22:37:47,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:37:47,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 964 conjuncts, 45 conjunts are in the unsatisfiable core [2023-02-14 22:37:47,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 22:37:47,448 INFO L321 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2023-02-14 22:37:47,449 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 [2023-02-14 22:37:47,454 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 [2023-02-14 22:37:47,459 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 [2023-02-14 22:37:47,488 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-14 22:37:47,489 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 27 [2023-02-14 22:37:47,493 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-14 22:37:47,542 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 [2023-02-14 22:37:47,566 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 33 proven. 5 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2023-02-14 22:37:47,566 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 22:37:47,855 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-14 22:37:47,855 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 [2023-02-14 22:37:47,859 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 [2023-02-14 22:37:47,863 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 [2023-02-14 22:37:47,912 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 6 treesize of output 4 [2023-02-14 22:37:47,919 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 [2023-02-14 22:37:47,930 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 22:37:47,934 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 22:37:47,953 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-14 22:37:47,953 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 [2023-02-14 22:37:47,957 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 [2023-02-14 22:37:47,961 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 [2023-02-14 22:37:48,017 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 [2023-02-14 22:37:48,025 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 [2023-02-14 22:37:48,031 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 22:37:48,033 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 22:37:48,125 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 32 proven. 2 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-02-14 22:37:48,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [575078213] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 22:37:48,126 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 22:37:48,126 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 16, 15] total 27 [2023-02-14 22:37:48,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169383235] [2023-02-14 22:37:48,127 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 22:37:48,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-02-14 22:37:48,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 22:37:48,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-02-14 22:37:48,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=644, Unknown=0, NotChecked=0, Total=702 [2023-02-14 22:37:48,128 INFO L87 Difference]: Start difference. First operand 133 states and 164 transitions. Second operand has 27 states, 23 states have (on average 2.9565217391304346) internal successors, (68), 23 states have internal predecessors, (68), 11 states have call successors, (22), 4 states have call predecessors, (22), 7 states have return successors, (17), 11 states have call predecessors, (17), 9 states have call successors, (17) [2023-02-14 22:37:49,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 22:37:49,339 INFO L93 Difference]: Finished difference Result 330 states and 410 transitions. [2023-02-14 22:37:49,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-02-14 22:37:49,340 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 23 states have (on average 2.9565217391304346) internal successors, (68), 23 states have internal predecessors, (68), 11 states have call successors, (22), 4 states have call predecessors, (22), 7 states have return successors, (17), 11 states have call predecessors, (17), 9 states have call successors, (17) Word has length 110 [2023-02-14 22:37:49,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 22:37:49,341 INFO L225 Difference]: With dead ends: 330 [2023-02-14 22:37:49,341 INFO L226 Difference]: Without dead ends: 201 [2023-02-14 22:37:49,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 240 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=175, Invalid=1895, Unknown=0, NotChecked=0, Total=2070 [2023-02-14 22:37:49,343 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 264 mSDsluCounter, 1687 mSDsCounter, 0 mSdLazyCounter, 1832 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 1793 SdHoareTripleChecker+Invalid, 1887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1832 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-02-14 22:37:49,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [266 Valid, 1793 Invalid, 1887 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 1832 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-02-14 22:37:49,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2023-02-14 22:37:49,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 166. [2023-02-14 22:37:49,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 126 states have (on average 1.253968253968254) internal successors, (158), 144 states have internal predecessors, (158), 29 states have call successors, (29), 10 states have call predecessors, (29), 10 states have return successors, (17), 13 states have call predecessors, (17), 15 states have call successors, (17) [2023-02-14 22:37:49,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 204 transitions. [2023-02-14 22:37:49,360 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 204 transitions. Word has length 110 [2023-02-14 22:37:49,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 22:37:49,360 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 204 transitions. [2023-02-14 22:37:49,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 23 states have (on average 2.9565217391304346) internal successors, (68), 23 states have internal predecessors, (68), 11 states have call successors, (22), 4 states have call predecessors, (22), 7 states have return successors, (17), 11 states have call predecessors, (17), 9 states have call successors, (17) [2023-02-14 22:37:49,361 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 204 transitions. [2023-02-14 22:37:49,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-02-14 22:37:49,362 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 22:37:49,362 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, 1, 1, 1] [2023-02-14 22:37:49,370 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-02-14 22:37:49,568 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 [2023-02-14 22:37:49,569 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 22:37:49,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 22:37:49,569 INFO L85 PathProgramCache]: Analyzing trace with hash 614553281, now seen corresponding path program 1 times [2023-02-14 22:37:49,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 22:37:49,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703435708] [2023-02-14 22:37:49,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 22:37:49,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 22:37:49,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:37:50,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 22:37:50,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:37:50,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-14 22:37:50,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:37:50,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 22:37:50,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:37:51,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 22:37:51,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:37:51,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-02-14 22:37:51,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:37:51,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-14 22:37:51,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:37:51,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-14 22:37:51,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:37:51,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-02-14 22:37:51,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:37:51,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 22:37:51,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:37:51,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 22:37:51,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:37:51,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-02-14 22:37:51,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:37:51,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-14 22:37:51,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:37:51,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-14 22:37:51,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:37:51,254 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 15 proven. 23 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2023-02-14 22:37:51,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 22:37:51,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703435708] [2023-02-14 22:37:51,255 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703435708] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 22:37:51,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1018768367] [2023-02-14 22:37:51,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 22:37:51,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 22:37:51,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 22:37:51,256 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) [2023-02-14 22:37:51,259 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-14 22:37:51,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:37:51,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 988 conjuncts, 55 conjunts are in the unsatisfiable core [2023-02-14 22:37:51,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 22:37:51,646 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-14 22:37:51,692 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 8 treesize of output 4 [2023-02-14 22:37:51,901 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2858 (Array Int Int)) (|##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base| Int)) (and (< |##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base| |c_#StackHeapBarrier|) (= (select (select (store |c_old(#memory_$Pointer$.base)| |##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base| v_ArrVal_2858) |c_##fun~$Pointer$~TO~VOID_#in~10#1.base|) |c_##fun~$Pointer$~TO~VOID_#in~10#1.offset|) 0))) is different from true [2023-02-14 22:37:51,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:37:51,952 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 80 proven. 4 refuted. 0 times theorem prover too weak. 46 trivial. 4 not checked. [2023-02-14 22:37:51,952 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 22:37:52,680 WARN L837 $PredicateComparison]: unable to prove that (forall ((|v_##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base_139| Int) (v_ArrVal_2898 (Array Int Int))) (or (not (< |v_##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base_139| |c_#StackHeapBarrier|)) (not (= (select (select (store |c_#memory_$Pointer$.base| |v_##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base_139| v_ArrVal_2898) |c_dll_create_generic_~#dll~0.base|) |c_dll_create_generic_~#dll~0.offset|) 0)))) is different from false [2023-02-14 22:37:52,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1018768367] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 22:37:52,682 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-14 22:37:52,682 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 15] total 24 [2023-02-14 22:37:52,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761781767] [2023-02-14 22:37:52,682 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-14 22:37:52,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-02-14 22:37:52,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 22:37:52,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-02-14 22:37:52,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=448, Unknown=9, NotChecked=86, Total=600 [2023-02-14 22:37:52,684 INFO L87 Difference]: Start difference. First operand 166 states and 204 transitions. Second operand has 24 states, 21 states have (on average 3.619047619047619) internal successors, (76), 21 states have internal predecessors, (76), 8 states have call successors, (20), 4 states have call predecessors, (20), 6 states have return successors, (17), 5 states have call predecessors, (17), 8 states have call successors, (17) [2023-02-14 22:38:01,631 WARN L233 SmtUtils]: Spent 6.08s on a formula simplification. DAG size of input: 53 DAG size of output: 49 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-02-14 22:38:03,845 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-14 22:38:04,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 22:38:04,437 INFO L93 Difference]: Finished difference Result 342 states and 424 transitions. [2023-02-14 22:38:04,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-02-14 22:38:04,438 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 21 states have (on average 3.619047619047619) internal successors, (76), 21 states have internal predecessors, (76), 8 states have call successors, (20), 4 states have call predecessors, (20), 6 states have return successors, (17), 5 states have call predecessors, (17), 8 states have call successors, (17) Word has length 113 [2023-02-14 22:38:04,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 22:38:04,439 INFO L225 Difference]: With dead ends: 342 [2023-02-14 22:38:04,439 INFO L226 Difference]: Without dead ends: 180 [2023-02-14 22:38:04,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=223, Invalid=1489, Unknown=18, NotChecked=162, Total=1892 [2023-02-14 22:38:04,441 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 117 mSDsluCounter, 1249 mSDsCounter, 0 mSdLazyCounter, 1541 mSolverCounterSat, 27 mSolverCounterUnsat, 35 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 1347 SdHoareTripleChecker+Invalid, 1770 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1541 IncrementalHoareTripleChecker+Invalid, 35 IncrementalHoareTripleChecker+Unknown, 167 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-02-14 22:38:04,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 1347 Invalid, 1770 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1541 Invalid, 35 Unknown, 167 Unchecked, 3.0s Time] [2023-02-14 22:38:04,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2023-02-14 22:38:04,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 176. [2023-02-14 22:38:04,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 135 states have (on average 1.237037037037037) internal successors, (167), 153 states have internal predecessors, (167), 29 states have call successors, (29), 11 states have call predecessors, (29), 11 states have return successors, (15), 13 states have call predecessors, (15), 15 states have call successors, (15) [2023-02-14 22:38:04,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 211 transitions. [2023-02-14 22:38:04,452 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 211 transitions. Word has length 113 [2023-02-14 22:38:04,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 22:38:04,452 INFO L495 AbstractCegarLoop]: Abstraction has 176 states and 211 transitions. [2023-02-14 22:38:04,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 21 states have (on average 3.619047619047619) internal successors, (76), 21 states have internal predecessors, (76), 8 states have call successors, (20), 4 states have call predecessors, (20), 6 states have return successors, (17), 5 states have call predecessors, (17), 8 states have call successors, (17) [2023-02-14 22:38:04,453 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 211 transitions. [2023-02-14 22:38:04,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-02-14 22:38:04,453 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 22:38:04,453 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] [2023-02-14 22:38:04,466 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-14 22:38:04,654 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 [2023-02-14 22:38:04,654 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 22:38:04,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 22:38:04,655 INFO L85 PathProgramCache]: Analyzing trace with hash 522299907, now seen corresponding path program 1 times [2023-02-14 22:38:04,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 22:38:04,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044534787] [2023-02-14 22:38:04,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 22:38:04,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 22:38:04,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:38:07,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 22:38:07,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:38:09,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-14 22:38:09,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:38:10,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 22:38:10,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:38:10,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 22:38:10,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:38:10,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-02-14 22:38:11,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat