./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/heap-manipulation/dll_of_dll-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 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-2.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 0eca46c14885d62179341dcc13b398752af03e020a80dcf533f4c9afc7372707 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 14:22:47,859 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 14:22:47,872 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 14:22:47,903 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 14:22:47,908 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 14:22:47,909 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 14:22:47,913 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 14:22:47,916 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 14:22:47,917 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 14:22:47,922 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 14:22:47,923 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 14:22:47,923 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 14:22:47,924 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 14:22:47,925 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 14:22:47,926 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 14:22:47,928 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 14:22:47,930 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 14:22:47,930 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 14:22:47,940 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 14:22:47,941 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 14:22:47,942 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 14:22:47,943 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 14:22:47,943 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 14:22:47,944 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 14:22:47,944 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 14:22:47,946 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 14:22:47,946 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 14:22:47,947 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 14:22:47,947 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 14:22:47,949 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 14:22:47,949 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 14:22:47,950 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 14:22:47,950 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 14:22:47,951 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 14:22:47,952 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 14:22:47,953 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 14:22:47,953 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 14:22:47,953 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 14:22:47,953 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 14:22:47,954 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 14:22:47,954 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 14:22:47,955 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 14:22:47,956 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 14:22:47,973 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 14:22:47,973 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 14:22:47,973 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 14:22:47,973 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 14:22:47,974 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 14:22:47,974 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 14:22:47,974 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 14:22:47,974 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 14:22:47,975 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 14:22:47,975 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 14:22:47,975 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 14:22:47,976 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 14:22:47,976 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 14:22:47,976 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 14:22:47,976 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 14:22:47,976 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 14:22:47,976 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 14:22:47,976 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 14:22:47,977 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 14:22:47,977 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 14:22:47,977 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 14:22:47,977 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 14:22:47,977 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 14:22:47,977 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 14:22:47,978 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 14:22:47,978 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 14:22:47,978 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 14:22:47,978 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 14:22:47,978 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 14:22:47,978 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 14:22:47,979 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 14:22:47,979 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 14:22:47,979 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 14:22:47,979 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0eca46c14885d62179341dcc13b398752af03e020a80dcf533f4c9afc7372707 [2022-07-19 14:22:48,166 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 14:22:48,194 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 14:22:48,195 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 14:22:48,196 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 14:22:48,197 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 14:22:48,198 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/heap-manipulation/dll_of_dll-2.i [2022-07-19 14:22:48,233 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e882fae2/09251fb73a93418caeb93b413ad4f9c3/FLAG6cbc1336a [2022-07-19 14:22:48,648 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 14:22:48,649 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/heap-manipulation/dll_of_dll-2.i [2022-07-19 14:22:48,657 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e882fae2/09251fb73a93418caeb93b413ad4f9c3/FLAG6cbc1336a [2022-07-19 14:22:49,031 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e882fae2/09251fb73a93418caeb93b413ad4f9c3 [2022-07-19 14:22:49,033 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 14:22:49,034 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 14:22:49,035 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 14:22:49,035 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 14:22:49,037 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 14:22:49,038 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 02:22:49" (1/1) ... [2022-07-19 14:22:49,038 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1dd69c6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 02:22:49, skipping insertion in model container [2022-07-19 14:22:49,039 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 02:22:49" (1/1) ... [2022-07-19 14:22:49,043 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 14:22:49,064 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 14:22:49,329 WARN L230 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-2.i[22634,22647] [2022-07-19 14:22:49,382 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 14:22:49,387 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 14:22:49,417 WARN L230 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-2.i[22634,22647] [2022-07-19 14:22:49,427 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 14:22:49,448 INFO L208 MainTranslator]: Completed translation [2022-07-19 14:22:49,448 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 02:22:49 WrapperNode [2022-07-19 14:22:49,449 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 14:22:49,450 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 14:22:49,450 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 14:22:49,450 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 14:22:49,455 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 02:22:49" (1/1) ... [2022-07-19 14:22:49,475 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 02:22:49" (1/1) ... [2022-07-19 14:22:49,505 INFO L137 Inliner]: procedures = 140, calls = 94, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 228 [2022-07-19 14:22:49,506 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 14:22:49,507 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 14:22:49,507 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 14:22:49,507 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 14:22:49,513 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 02:22:49" (1/1) ... [2022-07-19 14:22:49,513 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 02:22:49" (1/1) ... [2022-07-19 14:22:49,529 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 02:22:49" (1/1) ... [2022-07-19 14:22:49,530 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 02:22:49" (1/1) ... [2022-07-19 14:22:49,542 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 02:22:49" (1/1) ... [2022-07-19 14:22:49,556 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 02:22:49" (1/1) ... [2022-07-19 14:22:49,558 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 02:22:49" (1/1) ... [2022-07-19 14:22:49,560 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 14:22:49,561 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 14:22:49,561 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 14:22:49,561 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 14:22:49,571 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 02:22:49" (1/1) ... [2022-07-19 14:22:49,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 14:22:49,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 14:22:49,601 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) [2022-07-19 14:22:49,619 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 [2022-07-19 14:22:49,633 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2022-07-19 14:22:49,633 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2022-07-19 14:22:49,633 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_base [2022-07-19 14:22:49,633 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_base [2022-07-19 14:22:49,633 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-19 14:22:49,634 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 14:22:49,634 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_master [2022-07-19 14:22:49,634 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_master [2022-07-19 14:22:49,634 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 14:22:49,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-19 14:22:49,634 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-07-19 14:22:49,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-07-19 14:22:49,635 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-19 14:22:49,635 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 14:22:49,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-19 14:22:49,635 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_generic [2022-07-19 14:22:49,635 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_generic [2022-07-19 14:22:49,635 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_slave [2022-07-19 14:22:49,635 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_slave [2022-07-19 14:22:49,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 14:22:49,636 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 14:22:49,636 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 14:22:49,718 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 14:22:49,732 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 14:22:50,124 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 14:22:50,130 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 14:22:50,130 INFO L299 CfgBuilder]: Removed 38 assume(true) statements. [2022-07-19 14:22:50,131 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 02:22:50 BoogieIcfgContainer [2022-07-19 14:22:50,131 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 14:22:50,132 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 14:22:50,132 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 14:22:50,142 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 14:22:50,143 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 02:22:49" (1/3) ... [2022-07-19 14:22:50,143 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69f550e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 02:22:50, skipping insertion in model container [2022-07-19 14:22:50,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 02:22:49" (2/3) ... [2022-07-19 14:22:50,144 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69f550e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 02:22:50, skipping insertion in model container [2022-07-19 14:22:50,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 02:22:50" (3/3) ... [2022-07-19 14:22:50,145 INFO L111 eAbstractionObserver]: Analyzing ICFG dll_of_dll-2.i [2022-07-19 14:22:50,159 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 14:22:50,160 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 14:22:50,211 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 14:22:50,216 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1e7ae4f9, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@355d989a [2022-07-19 14:22:50,217 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 14:22:50,220 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) [2022-07-19 14:22:50,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-07-19 14:22:50,226 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 14:22:50,227 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] [2022-07-19 14:22:50,227 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 14:22:50,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 14:22:50,231 INFO L85 PathProgramCache]: Analyzing trace with hash 760908611, now seen corresponding path program 1 times [2022-07-19 14:22:50,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 14:22:50,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487609904] [2022-07-19 14:22:50,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 14:22:50,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 14:22:50,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 14:22:50,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 14:22:50,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 14:22:50,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 14:22:50,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 14:22:50,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 14:22:50,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 14:22:50,419 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-19 14:22:50,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 14:22:50,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487609904] [2022-07-19 14:22:50,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487609904] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 14:22:50,420 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 14:22:50,420 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 14:22:50,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67277999] [2022-07-19 14:22:50,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 14:22:50,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 14:22:50,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 14:22:50,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 14:22:50,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 14:22:50,443 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) [2022-07-19 14:22:50,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 14:22:50,605 INFO L93 Difference]: Finished difference Result 251 states and 429 transitions. [2022-07-19 14:22:50,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 14:22:50,608 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 [2022-07-19 14:22:50,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 14:22:50,617 INFO L225 Difference]: With dead ends: 251 [2022-07-19 14:22:50,618 INFO L226 Difference]: Without dead ends: 120 [2022-07-19 14:22:50,625 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 [2022-07-19 14:22:50,629 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 32 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 14:22:50,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 210 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 14:22:50,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2022-07-19 14:22:50,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2022-07-19 14:22:50,658 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) [2022-07-19 14:22:50,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 149 transitions. [2022-07-19 14:22:50,661 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 149 transitions. Word has length 37 [2022-07-19 14:22:50,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 14:22:50,661 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 149 transitions. [2022-07-19 14:22:50,661 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) [2022-07-19 14:22:50,661 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 149 transitions. [2022-07-19 14:22:50,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-07-19 14:22:50,663 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 14:22:50,663 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] [2022-07-19 14:22:50,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 14:22:50,663 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 14:22:50,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 14:22:50,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1675514385, now seen corresponding path program 1 times [2022-07-19 14:22:50,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 14:22:50,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889642346] [2022-07-19 14:22:50,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 14:22:50,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 14:22:50,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 14:22:50,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 14:22:50,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 14:22:50,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 14:22:50,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 14:22:50,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 14:22:50,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 14:22:50,934 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-19 14:22:50,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 14:22:50,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889642346] [2022-07-19 14:22:50,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889642346] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 14:22:50,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [498595980] [2022-07-19 14:22:50,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 14:22:50,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 14:22:50,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 14:22:50,968 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) [2022-07-19 14:22:51,028 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-19 14:22:51,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 14:22:51,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-19 14:22:51,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 14:22:51,328 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-19 14:22:51,328 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 14:22:51,495 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-19 14:22:51,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [498595980] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 14:22:51,496 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 14:22:51,496 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5] total 12 [2022-07-19 14:22:51,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951430257] [2022-07-19 14:22:51,497 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 14:22:51,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-19 14:22:51,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 14:22:51,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-19 14:22:51,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-07-19 14:22:51,499 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) [2022-07-19 14:22:51,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 14:22:51,812 INFO L93 Difference]: Finished difference Result 250 states and 324 transitions. [2022-07-19 14:22:51,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-19 14:22:51,812 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 [2022-07-19 14:22:51,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 14:22:51,814 INFO L225 Difference]: With dead ends: 250 [2022-07-19 14:22:51,814 INFO L226 Difference]: Without dead ends: 133 [2022-07-19 14:22:51,814 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 [2022-07-19 14:22:51,815 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 55 mSDsluCounter, 744 mSDsCounter, 0 mSdLazyCounter, 465 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 882 SdHoareTripleChecker+Invalid, 508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-19 14:22:51,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 882 Invalid, 508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 465 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-19 14:22:51,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2022-07-19 14:22:51,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2022-07-19 14:22:51,825 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) [2022-07-19 14:22:51,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 164 transitions. [2022-07-19 14:22:51,826 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 164 transitions. Word has length 38 [2022-07-19 14:22:51,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 14:22:51,827 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 164 transitions. [2022-07-19 14:22:51,827 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) [2022-07-19 14:22:51,827 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 164 transitions. [2022-07-19 14:22:51,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-07-19 14:22:51,829 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 14:22:51,829 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] [2022-07-19 14:22:51,857 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-19 14:22:52,059 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 [2022-07-19 14:22:52,060 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 14:22:52,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 14:22:52,060 INFO L85 PathProgramCache]: Analyzing trace with hash 800158065, now seen corresponding path program 1 times [2022-07-19 14:22:52,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 14:22:52,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903159968] [2022-07-19 14:22:52,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 14:22:52,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 14:22:52,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 14:22:52,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 14:22:52,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 14:22:52,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 14:22:52,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 14:22:52,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 14:22:52,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 14:22:52,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-19 14:22:52,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 14:22:52,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-19 14:22:52,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 14:22:52,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 14:22:52,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 14:22:52,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 14:22:52,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 14:22:52,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-19 14:22:52,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 14:22:52,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 14:22:52,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 14:22:52,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-19 14:22:52,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 14:22:52,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-19 14:22:52,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 14:22:52,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 14:22:52,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 14:22:52,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 14:22:52,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 14:22:52,905 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 27 proven. 23 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-07-19 14:22:52,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 14:22:52,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903159968] [2022-07-19 14:22:52,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903159968] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 14:22:52,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1286681834] [2022-07-19 14:22:52,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 14:22:52,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 14:22:52,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 14:22:52,932 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) [2022-07-19 14:22:52,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-19 14:22:53,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 14:22:53,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 948 conjuncts, 45 conjunts are in the unsatisfiable core [2022-07-19 14:22:53,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 14:22:53,304 INFO L356 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2022-07-19 14:22:53,304 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-19 14:22:53,312 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-19 14:22:53,318 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-19 14:22:53,353 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 14:22:53,354 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 9 [2022-07-19 14:22:53,357 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2022-07-19 14:22:53,412 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-19 14:22:53,435 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 33 proven. 5 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2022-07-19 14:22:53,435 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 14:22:53,717 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 14:22:53,717 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-19 14:22:53,723 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-19 14:22:53,731 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-19 14:22:53,761 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-19 14:22:53,767 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-19 14:22:53,785 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 14:22:53,786 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-19 14:22:53,788 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-19 14:22:53,791 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-19 14:22:53,822 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-19 14:22:53,829 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-19 14:22:53,926 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 32 proven. 2 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-07-19 14:22:53,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1286681834] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 14:22:53,926 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 14:22:53,926 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 16, 15] total 27 [2022-07-19 14:22:53,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358510307] [2022-07-19 14:22:53,927 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 14:22:53,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-07-19 14:22:53,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 14:22:53,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-07-19 14:22:53,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=644, Unknown=0, NotChecked=0, Total=702 [2022-07-19 14:22:53,928 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) [2022-07-19 14:22:54,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 14:22:54,795 INFO L93 Difference]: Finished difference Result 330 states and 410 transitions. [2022-07-19 14:22:54,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-07-19 14:22:54,796 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 [2022-07-19 14:22:54,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 14:22:54,797 INFO L225 Difference]: With dead ends: 330 [2022-07-19 14:22:54,797 INFO L226 Difference]: Without dead ends: 201 [2022-07-19 14:22:54,799 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 240 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=175, Invalid=1895, Unknown=0, NotChecked=0, Total=2070 [2022-07-19 14:22:54,799 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 256 mSDsluCounter, 1730 mSDsCounter, 0 mSdLazyCounter, 1842 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 1861 SdHoareTripleChecker+Invalid, 1919 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1842 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-19 14:22:54,799 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 1861 Invalid, 1919 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1842 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-19 14:22:54,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2022-07-19 14:22:54,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 166. [2022-07-19 14:22:54,813 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) [2022-07-19 14:22:54,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 204 transitions. [2022-07-19 14:22:54,814 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 204 transitions. Word has length 110 [2022-07-19 14:22:54,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 14:22:54,814 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 204 transitions. [2022-07-19 14:22:54,814 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) [2022-07-19 14:22:54,814 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 204 transitions. [2022-07-19 14:22:54,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-19 14:22:54,815 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 14:22:54,816 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] [2022-07-19 14:22:54,853 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-19 14:22:55,016 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 [2022-07-19 14:22:55,016 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 14:22:55,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 14:22:55,017 INFO L85 PathProgramCache]: Analyzing trace with hash 614553281, now seen corresponding path program 1 times [2022-07-19 14:22:55,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 14:22:55,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487101521] [2022-07-19 14:22:55,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 14:22:55,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 14:22:55,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 14:22:55,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 14:22:55,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 14:22:55,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 14:22:55,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 14:22:55,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 14:22:55,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 14:22:55,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-19 14:22:55,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 14:22:55,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-19 14:22:55,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 14:22:55,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 14:22:55,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 14:22:55,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 14:22:55,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 14:22:55,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-19 14:22:55,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 14:22:55,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 14:22:55,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 14:22:55,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-19 14:22:55,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 14:22:55,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-19 14:22:55,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 14:22:55,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 14:22:55,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 14:22:55,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 14:22:55,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 14:22:55,643 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 15 proven. 23 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2022-07-19 14:22:55,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 14:22:55,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487101521] [2022-07-19 14:22:55,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487101521] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 14:22:55,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [410441608] [2022-07-19 14:22:55,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 14:22:55,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 14:22:55,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 14:22:55,646 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) [2022-07-19 14:22:55,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-19 14:22:55,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 14:22:55,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 972 conjuncts, 55 conjunts are in the unsatisfiable core [2022-07-19 14:22:55,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 14:22:56,047 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-19 14:22:56,089 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-19 14:22:56,199 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2702 (Array Int Int)) (|##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base| Int)) (and (< |##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base| |c_#StackHeapBarrier|) (= |c_##fun~$Pointer$~TO~VOID_dll_insert_slave_~next~0#1.base| (select (select (store |c_old(#memory_$Pointer$.base)| |##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base| v_ArrVal_2702) |c_##fun~$Pointer$~TO~VOID_#in~10#1.base|) |c_##fun~$Pointer$~TO~VOID_#in~10#1.offset|)))) is different from true [2022-07-19 14:22:56,207 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2702 (Array Int Int)) (|##fun~$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$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base| v_ArrVal_2702) |c_##fun~$Pointer$~TO~VOID_#in~10#1.base|) |c_##fun~$Pointer$~TO~VOID_#in~10#1.offset|) 0))) is different from true [2022-07-19 14:22:56,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 14:22:56,226 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 80 proven. 3 refuted. 0 times theorem prover too weak. 46 trivial. 5 not checked. [2022-07-19 14:22:56,226 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 14:22:56,972 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base_139| Int) (v_ArrVal_2742 (Array Int Int))) (or (not (< |v_##fun~$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_2742) |c_dll_create_generic_~#dll~0.base|) |c_dll_create_generic_~#dll~0.offset|) 0)))) is different from false [2022-07-19 14:22:56,974 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [410441608] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 14:22:56,974 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 14:22:56,974 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 15] total 24 [2022-07-19 14:22:56,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951098076] [2022-07-19 14:22:56,974 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 14:22:56,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-07-19 14:22:56,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 14:22:56,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-07-19 14:22:56,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=414, Unknown=3, NotChecked=126, Total=600 [2022-07-19 14:22:56,975 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) [2022-07-19 14:22:57,225 WARN L855 $PredicateComparison]: unable to prove that (and (not (= (select (select |c_#memory_$Pointer$.base| |c_##fun~$Pointer$~TO~VOID_#in~10#1.base|) |c_##fun~$Pointer$~TO~VOID_#in~10#1.offset|) 0)) (exists ((v_ArrVal_2702 (Array Int Int)) (|##fun~$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$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base| v_ArrVal_2702) |c_##fun~$Pointer$~TO~VOID_#in~10#1.base|) |c_##fun~$Pointer$~TO~VOID_#in~10#1.offset|) 0)))) is different from true [2022-07-19 14:22:57,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 14:22:57,892 INFO L93 Difference]: Finished difference Result 338 states and 426 transitions. [2022-07-19 14:22:57,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-19 14:22:57,892 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 [2022-07-19 14:22:57,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 14:22:57,894 INFO L225 Difference]: With dead ends: 338 [2022-07-19 14:22:57,894 INFO L226 Difference]: Without dead ends: 180 [2022-07-19 14:22:57,896 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=144, Invalid=1053, Unknown=9, NotChecked=276, Total=1482 [2022-07-19 14:22:57,896 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 54 mSDsluCounter, 1190 mSDsCounter, 0 mSdLazyCounter, 1228 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 1316 SdHoareTripleChecker+Invalid, 1711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 440 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-19 14:22:57,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 1316 Invalid, 1711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1228 Invalid, 0 Unknown, 440 Unchecked, 0.6s Time] [2022-07-19 14:22:57,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2022-07-19 14:22:57,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 171. [2022-07-19 14:22:57,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 129 states have (on average 1.248062015503876) internal successors, (161), 148 states have internal predecessors, (161), 30 states have call successors, (30), 10 states have call predecessors, (30), 11 states have return successors, (19), 14 states have call predecessors, (19), 16 states have call successors, (19) [2022-07-19 14:22:57,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 210 transitions. [2022-07-19 14:22:57,907 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 210 transitions. Word has length 113 [2022-07-19 14:22:57,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 14:22:57,908 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 210 transitions. [2022-07-19 14:22:57,908 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) [2022-07-19 14:22:57,908 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 210 transitions. [2022-07-19 14:22:57,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-19 14:22:57,909 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 14:22:57,909 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] [2022-07-19 14:22:57,941 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-19 14:22:58,124 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 [2022-07-19 14:22:58,125 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 14:22:58,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 14:22:58,126 INFO L85 PathProgramCache]: Analyzing trace with hash 522299907, now seen corresponding path program 1 times [2022-07-19 14:22:58,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 14:22:58,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111218870] [2022-07-19 14:22:58,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 14:22:58,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 14:22:58,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 14:22:58,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 14:22:58,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 14:22:58,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 14:22:58,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 14:22:58,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 14:22:58,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 14:22:58,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-19 14:22:59,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 14:22:59,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-19 14:22:59,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 14:22:59,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 14:22:59,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 14:22:59,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 14:22:59,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 14:22:59,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-19 14:22:59,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 14:22:59,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 14:22:59,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 14:22:59,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-19 14:22:59,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 14:23:00,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-19 14:23:00,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat