./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 a31fd051 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-?-a31fd05 [2023-02-15 10:27:52,994 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-15 10:27:52,997 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-15 10:27:53,038 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-15 10:27:53,038 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-15 10:27:53,043 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-15 10:27:53,045 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-15 10:27:53,048 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-15 10:27:53,049 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-15 10:27:53,054 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-15 10:27:53,055 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-15 10:27:53,057 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-15 10:27:53,057 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-15 10:27:53,059 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-15 10:27:53,061 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-15 10:27:53,062 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-15 10:27:53,063 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-15 10:27:53,064 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-15 10:27:53,065 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-15 10:27:53,070 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-15 10:27:53,072 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-15 10:27:53,073 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-15 10:27:53,074 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-15 10:27:53,075 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-15 10:27:53,083 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-15 10:27:53,083 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-15 10:27:53,083 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-15 10:27:53,085 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-15 10:27:53,085 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-15 10:27:53,086 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-15 10:27:53,086 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-15 10:27:53,087 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-15 10:27:53,089 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-15 10:27:53,090 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-15 10:27:53,091 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-15 10:27:53,091 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-15 10:27:53,092 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-15 10:27:53,092 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-15 10:27:53,092 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-15 10:27:53,093 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-15 10:27:53,094 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-15 10:27:53,095 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-15 10:27:53,125 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-15 10:27:53,125 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-15 10:27:53,126 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-15 10:27:53,126 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-15 10:27:53,127 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-15 10:27:53,127 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-15 10:27:53,127 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-15 10:27:53,128 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-15 10:27:53,128 INFO L138 SettingsManager]: * Use SBE=true [2023-02-15 10:27:53,128 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-15 10:27:53,129 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-15 10:27:53,129 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-15 10:27:53,129 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-15 10:27:53,129 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-15 10:27:53,129 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-15 10:27:53,130 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-15 10:27:53,130 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-15 10:27:53,130 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-15 10:27:53,130 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-15 10:27:53,130 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-15 10:27:53,130 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-15 10:27:53,131 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-15 10:27:53,131 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-15 10:27:53,131 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-15 10:27:53,131 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 10:27:53,131 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-15 10:27:53,132 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-15 10:27:53,132 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-15 10:27:53,132 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-15 10:27:53,132 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-15 10:27:53,132 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-15 10:27:53,132 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-15 10:27:53,133 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-15 10:27:53,133 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-15 10:27:53,133 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-15 10:27:53,133 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0e14b8baad7c8f50637b16b3adcb891ef363d7563e7c4e0e74695e7b8e3d1787 [2023-02-15 10:27:53,394 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-15 10:27:53,425 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-15 10:27:53,427 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-15 10:27:53,428 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-15 10:27:53,429 INFO L275 PluginConnector]: CDTParser initialized [2023-02-15 10:27:53,430 INFO L432 ainManager$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 10:27:54,513 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-15 10:27:54,795 INFO L351 CDTParser]: Found 1 translation units. [2023-02-15 10:27:54,795 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/heap-manipulation/dll_of_dll-1.i [2023-02-15 10:27:54,803 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a2f4a01bb/4ac6695ca5bc4c0d861972951df6ddfe/FLAG43864aa92 [2023-02-15 10:27:54,818 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a2f4a01bb/4ac6695ca5bc4c0d861972951df6ddfe [2023-02-15 10:27:54,821 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-15 10:27:54,822 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-15 10:27:54,824 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-15 10:27:54,825 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-15 10:27:54,830 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-15 10:27:54,831 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 10:27:54" (1/1) ... [2023-02-15 10:27:54,832 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d3f7296 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:27:54, skipping insertion in model container [2023-02-15 10:27:54,832 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 10:27:54" (1/1) ... [2023-02-15 10:27:54,838 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-15 10:27:54,880 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 10:27:55,133 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 10:27:55,196 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 10:27:55,205 INFO L203 MainTranslator]: Completed pre-run [2023-02-15 10:27:55,231 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 10:27:55,247 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 10:27:55,274 INFO L208 MainTranslator]: Completed translation [2023-02-15 10:27:55,274 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:27:55 WrapperNode [2023-02-15 10:27:55,274 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-15 10:27:55,275 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-15 10:27:55,275 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-15 10:27:55,275 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-15 10:27:55,280 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:27:55" (1/1) ... [2023-02-15 10:27:55,295 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:27:55" (1/1) ... [2023-02-15 10:27:55,322 INFO L138 Inliner]: procedures = 140, calls = 94, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 228 [2023-02-15 10:27:55,324 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-15 10:27:55,324 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-15 10:27:55,324 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-15 10:27:55,325 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-15 10:27:55,331 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:27:55" (1/1) ... [2023-02-15 10:27:55,332 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:27:55" (1/1) ... [2023-02-15 10:27:55,336 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:27:55" (1/1) ... [2023-02-15 10:27:55,336 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:27:55" (1/1) ... [2023-02-15 10:27:55,347 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:27:55" (1/1) ... [2023-02-15 10:27:55,353 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:27:55" (1/1) ... [2023-02-15 10:27:55,356 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:27:55" (1/1) ... [2023-02-15 10:27:55,357 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:27:55" (1/1) ... [2023-02-15 10:27:55,361 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-15 10:27:55,364 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-15 10:27:55,365 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-15 10:27:55,365 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-15 10:27:55,365 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:27:55" (1/1) ... [2023-02-15 10:27:55,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 10:27:55,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 10:27:55,402 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 10:27:55,412 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 10:27:55,439 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2023-02-15 10:27:55,440 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2023-02-15 10:27:55,440 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_base [2023-02-15 10:27:55,440 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_base [2023-02-15 10:27:55,440 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-02-15 10:27:55,440 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-15 10:27:55,440 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_master [2023-02-15 10:27:55,441 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_master [2023-02-15 10:27:55,441 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-02-15 10:27:55,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-02-15 10:27:55,441 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2023-02-15 10:27:55,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2023-02-15 10:27:55,441 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-02-15 10:27:55,441 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-15 10:27:55,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-02-15 10:27:55,442 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_generic [2023-02-15 10:27:55,442 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_generic [2023-02-15 10:27:55,442 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_slave [2023-02-15 10:27:55,442 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_slave [2023-02-15 10:27:55,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-15 10:27:55,442 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-15 10:27:55,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-15 10:27:55,631 INFO L235 CfgBuilder]: Building ICFG [2023-02-15 10:27:55,633 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-15 10:27:56,052 INFO L276 CfgBuilder]: Performing block encoding [2023-02-15 10:27:56,064 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-15 10:27:56,065 INFO L300 CfgBuilder]: Removed 38 assume(true) statements. [2023-02-15 10:27:56,067 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 10:27:56 BoogieIcfgContainer [2023-02-15 10:27:56,067 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-15 10:27:56,085 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-15 10:27:56,085 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-15 10:27:56,088 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-15 10:27:56,088 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 10:27:54" (1/3) ... [2023-02-15 10:27:56,089 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bb86901 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 10:27:56, skipping insertion in model container [2023-02-15 10:27:56,089 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:27:55" (2/3) ... [2023-02-15 10:27:56,089 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bb86901 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 10:27:56, skipping insertion in model container [2023-02-15 10:27:56,089 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 10:27:56" (3/3) ... [2023-02-15 10:27:56,090 INFO L112 eAbstractionObserver]: Analyzing ICFG dll_of_dll-1.i [2023-02-15 10:27:56,105 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-15 10:27:56,105 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-15 10:27:56,147 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-15 10:27:56,158 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;@572210f4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-15 10:27:56,158 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-15 10:27:56,166 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 10:27:56,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-02-15 10:27:56,173 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:27:56,174 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 10:27:56,174 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:27:56,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:27:56,178 INFO L85 PathProgramCache]: Analyzing trace with hash 760908611, now seen corresponding path program 1 times [2023-02-15 10:27:56,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:27:56,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430496649] [2023-02-15 10:27:56,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:27:56,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:27:56,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:27:56,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-15 10:27:56,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:27:56,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-15 10:27:56,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:27:56,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-15 10:27:56,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:27:56,583 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 10:27:56,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:27:56,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430496649] [2023-02-15 10:27:56,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430496649] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 10:27:56,594 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 10:27:56,594 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 10:27:56,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575759767] [2023-02-15 10:27:56,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 10:27:56,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 10:27:56,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:27:56,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 10:27:56,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 10:27:56,643 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 10:27:56,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:27:56,881 INFO L93 Difference]: Finished difference Result 251 states and 429 transitions. [2023-02-15 10:27:56,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 10:27:56,884 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 10:27:56,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:27:56,891 INFO L225 Difference]: With dead ends: 251 [2023-02-15 10:27:56,892 INFO L226 Difference]: Without dead ends: 120 [2023-02-15 10:27:56,896 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 10:27:56,898 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, 0.2s IncrementalHoareTripleChecker+Time [2023-02-15 10:27:56,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 181 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-15 10:27:56,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2023-02-15 10:27:56,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2023-02-15 10:27:56,934 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 10:27:56,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 149 transitions. [2023-02-15 10:27:56,937 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 149 transitions. Word has length 37 [2023-02-15 10:27:56,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:27:56,938 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 149 transitions. [2023-02-15 10:27:56,938 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 10:27:56,938 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 149 transitions. [2023-02-15 10:27:56,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-02-15 10:27:56,940 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:27:56,940 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 10:27:56,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-15 10:27:56,941 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:27:56,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:27:56,942 INFO L85 PathProgramCache]: Analyzing trace with hash 1675514385, now seen corresponding path program 1 times [2023-02-15 10:27:56,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:27:56,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105368939] [2023-02-15 10:27:56,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:27:56,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:27:57,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:27:57,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-15 10:27:57,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:27:57,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-15 10:27:57,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:27:57,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-15 10:27:57,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:27:57,630 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 10:27:57,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:27:57,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105368939] [2023-02-15 10:27:57,634 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105368939] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 10:27:57,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [791658994] [2023-02-15 10:27:57,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:27:57,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 10:27:57,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 10:27:57,638 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 10:27:57,657 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 10:27:57,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:27:57,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 13 conjunts are in the unsatisfiable core [2023-02-15 10:27:57,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 10:27:57,940 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 10:27:57,941 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 10:27:58,119 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 10:27:58,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [791658994] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 10:27:58,120 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 10:27:58,120 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5] total 12 [2023-02-15 10:27:58,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150212477] [2023-02-15 10:27:58,121 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 10:27:58,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-15 10:27:58,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:27:58,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-15 10:27:58,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2023-02-15 10:27:58,124 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 10:27:58,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:27:58,590 INFO L93 Difference]: Finished difference Result 250 states and 324 transitions. [2023-02-15 10:27:58,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-15 10:27:58,591 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 10:27:58,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:27:58,593 INFO L225 Difference]: With dead ends: 250 [2023-02-15 10:27:58,593 INFO L226 Difference]: Without dead ends: 133 [2023-02-15 10:27:58,595 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 10:27:58,596 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, 0.4s IncrementalHoareTripleChecker+Time [2023-02-15 10:27:58,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 1037 Invalid, 622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 594 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-02-15 10:27:58,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2023-02-15 10:27:58,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2023-02-15 10:27:58,609 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 10:27:58,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 164 transitions. [2023-02-15 10:27:58,611 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 164 transitions. Word has length 38 [2023-02-15 10:27:58,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:27:58,611 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 164 transitions. [2023-02-15 10:27:58,612 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 10:27:58,612 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 164 transitions. [2023-02-15 10:27:58,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-02-15 10:27:58,614 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:27:58,615 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 10:27:58,621 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 10:27:58,821 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 10:27:58,821 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:27:58,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:27:58,822 INFO L85 PathProgramCache]: Analyzing trace with hash 800158065, now seen corresponding path program 1 times [2023-02-15 10:27:58,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:27:58,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116342864] [2023-02-15 10:27:58,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:27:58,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:27:58,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:27:59,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-15 10:27:59,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:28:00,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-15 10:28:00,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:28:00,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-15 10:28:00,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:28:00,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-15 10:28:00,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:28:00,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-02-15 10:28:00,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:28:00,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-15 10:28:00,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:28:00,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-15 10:28:00,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:28:00,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-02-15 10:28:00,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:28:01,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-15 10:28:01,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:28:01,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-15 10:28:01,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:28:01,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-02-15 10:28:01,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:28:01,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-15 10:28:01,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:28:01,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-15 10:28:01,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:28:01,733 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 10:28:01,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:28:01,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116342864] [2023-02-15 10:28:01,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116342864] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 10:28:01,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [235556946] [2023-02-15 10:28:01,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:28:01,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 10:28:01,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 10:28:01,738 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 10:28:01,769 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 10:28:02,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:28:02,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 964 conjuncts, 45 conjunts are in the unsatisfiable core [2023-02-15 10:28:02,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 10:28:02,186 INFO L321 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2023-02-15 10:28:02,187 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 10:28:02,194 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 10:28:02,203 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 10:28:02,253 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 10:28:02,254 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 [2023-02-15 10:28:02,258 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-15 10:28:02,325 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 10:28:02,355 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 10:28:02,356 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 10:28:02,735 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 10:28:02,735 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 10:28:02,739 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 10:28:02,744 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 10:28:02,793 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 10:28:02,800 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 10:28:02,818 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:28:02,822 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:28:02,848 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 10:28:02,849 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 10:28:02,853 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 10:28:02,857 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 10:28:02,927 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 10:28:02,936 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 10:28:02,945 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:28:02,948 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:28:03,067 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 10:28:03,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [235556946] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 10:28:03,068 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 10:28:03,068 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 16, 15] total 27 [2023-02-15 10:28:03,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581021774] [2023-02-15 10:28:03,069 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 10:28:03,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-02-15 10:28:03,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:28:03,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-02-15 10:28:03,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=644, Unknown=0, NotChecked=0, Total=702 [2023-02-15 10:28:03,071 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) [2023-02-15 10:28:04,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:28:04,604 INFO L93 Difference]: Finished difference Result 330 states and 410 transitions. [2023-02-15 10:28:04,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-02-15 10:28:04,604 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 [2023-02-15 10:28:04,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:28:04,606 INFO L225 Difference]: With dead ends: 330 [2023-02-15 10:28:04,607 INFO L226 Difference]: Without dead ends: 201 [2023-02-15 10:28:04,608 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 240 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=175, Invalid=1895, Unknown=0, NotChecked=0, Total=2070 [2023-02-15 10:28:04,609 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 264 mSDsluCounter, 1687 mSDsCounter, 0 mSdLazyCounter, 1832 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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, 1.0s IncrementalHoareTripleChecker+Time [2023-02-15 10:28:04,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [266 Valid, 1793 Invalid, 1887 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 1832 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-02-15 10:28:04,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2023-02-15 10:28:04,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 166. [2023-02-15 10:28:04,624 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) [2023-02-15 10:28:04,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 204 transitions. [2023-02-15 10:28:04,625 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 204 transitions. Word has length 110 [2023-02-15 10:28:04,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:28:04,626 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 204 transitions. [2023-02-15 10:28:04,626 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) [2023-02-15 10:28:04,626 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 204 transitions. [2023-02-15 10:28:04,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-02-15 10:28:04,629 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:28:04,629 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] [2023-02-15 10:28:04,640 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 10:28:04,837 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 10:28:04,837 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:28:04,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:28:04,838 INFO L85 PathProgramCache]: Analyzing trace with hash 614553281, now seen corresponding path program 1 times [2023-02-15 10:28:04,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:28:04,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454698514] [2023-02-15 10:28:04,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:28:04,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:28:04,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:28:05,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-15 10:28:05,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:28:06,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-15 10:28:06,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:28:06,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-15 10:28:06,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:28:06,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-15 10:28:06,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:28:07,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-02-15 10:28:07,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:28:07,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-15 10:28:07,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:28:07,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-15 10:28:07,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:28:07,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-02-15 10:28:07,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:28:07,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-15 10:28:07,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:28:07,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-15 10:28:07,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:28:07,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-02-15 10:28:07,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:28:07,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-15 10:28:07,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:28:07,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-15 10:28:07,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:28:07,234 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 10:28:07,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:28:07,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454698514] [2023-02-15 10:28:07,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454698514] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 10:28:07,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1796119142] [2023-02-15 10:28:07,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:28:07,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 10:28:07,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 10:28:07,237 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 10:28:07,264 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 10:28:07,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:28:07,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 988 conjuncts, 55 conjunts are in the unsatisfiable core [2023-02-15 10:28:07,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 10:28:07,703 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 [2023-02-15 10:28:07,748 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 [2023-02-15 10:28:07,885 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$~TO~VOID_#in~10#1.offset|) |c_##fun~$Pointer$~TO~VOID_dll_insert_slave_~next~0#1.base|))) is different from true [2023-02-15 10:28:07,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:28:07,983 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 80 proven. 7 refuted. 0 times theorem prover too weak. 46 trivial. 1 not checked. [2023-02-15 10:28:07,983 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 10:28:09,051 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$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base_139| v_ArrVal_2898) |c_dll_create_generic_~#dll~0.base|) |c_dll_create_generic_~#dll~0.offset|) 0)))) is different from false [2023-02-15 10:28:09,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1796119142] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 10:28:09,053 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 10:28:09,053 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 15] total 24 [2023-02-15 10:28:09,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211812724] [2023-02-15 10:28:09,053 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 10:28:09,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-02-15 10:28:09,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:28:09,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-02-15 10:28:09,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=450, Unknown=7, NotChecked=86, Total=600 [2023-02-15 10:28:09,055 INFO L87 Difference]: Start difference. First operand 166 states and 204 transitions. Second operand has 24 states, 21 states have (on average 3.619047619047619) internal successors, (76), 21 states have internal predecessors, (76), 8 states have call successors, (20), 4 states have call predecessors, (20), 6 states have return successors, (17), 5 states have call predecessors, (17), 8 states have call successors, (17) [2023-02-15 10:28:15,404 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-15 10:28:19,769 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-15 10:28:22,057 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-15 10:28:34,301 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-15 10:28:40,476 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-15 10:28:42,678 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] [2023-02-15 10:28:43,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:28:43,362 INFO L93 Difference]: Finished difference Result 342 states and 424 transitions. [2023-02-15 10:28:43,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-02-15 10:28:43,362 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 [2023-02-15 10:28:43,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:28:43,364 INFO L225 Difference]: With dead ends: 342 [2023-02-15 10:28:43,364 INFO L226 Difference]: Without dead ends: 180 [2023-02-15 10:28:43,365 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 21.3s TimeCoverageRelationStatistics Valid=237, Invalid=1637, Unknown=26, NotChecked=170, Total=2070 [2023-02-15 10:28:43,366 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 112 mSDsluCounter, 1231 mSDsCounter, 0 mSdLazyCounter, 1528 mSolverCounterSat, 28 mSolverCounterUnsat, 20 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 1328 SdHoareTripleChecker+Invalid, 1746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1528 IncrementalHoareTripleChecker+Invalid, 20 IncrementalHoareTripleChecker+Unknown, 170 IncrementalHoareTripleChecker+Unchecked, 13.3s IncrementalHoareTripleChecker+Time [2023-02-15 10:28:43,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 1328 Invalid, 1746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1528 Invalid, 20 Unknown, 170 Unchecked, 13.3s Time] [2023-02-15 10:28:43,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2023-02-15 10:28:43,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 176. [2023-02-15 10:28:43,381 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) [2023-02-15 10:28:43,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 211 transitions. [2023-02-15 10:28:43,382 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 211 transitions. Word has length 113 [2023-02-15 10:28:43,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:28:43,382 INFO L495 AbstractCegarLoop]: Abstraction has 176 states and 211 transitions. [2023-02-15 10:28:43,383 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) [2023-02-15 10:28:43,383 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 211 transitions. [2023-02-15 10:28:43,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-02-15 10:28:43,385 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:28:43,386 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 10:28:43,415 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 10:28:43,611 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 10:28:43,612 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:28:43,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:28:43,613 INFO L85 PathProgramCache]: Analyzing trace with hash 522299907, now seen corresponding path program 1 times [2023-02-15 10:28:43,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:28:43,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530412286] [2023-02-15 10:28:43,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:28:43,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:28:43,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:28:48,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-15 10:28:48,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:28:51,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-15 10:28:51,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:28:51,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-15 10:28:51,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:28:51,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-15 10:28:51,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:28:52,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-02-15 10:28:52,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat