./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 ae007674 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-dev-ae00767 [2021-12-27 23:45:55,359 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-27 23:45:55,361 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-27 23:45:55,403 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-27 23:45:55,404 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-27 23:45:55,407 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-27 23:45:55,408 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-27 23:45:55,411 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-27 23:45:55,413 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-27 23:45:55,416 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-27 23:45:55,417 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-27 23:45:55,418 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-27 23:45:55,418 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-27 23:45:55,420 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-27 23:45:55,421 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-27 23:45:55,425 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-27 23:45:55,426 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-27 23:45:55,426 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-27 23:45:55,428 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-27 23:45:55,432 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-27 23:45:55,433 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-27 23:45:55,433 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-27 23:45:55,434 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-27 23:45:55,435 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-27 23:45:55,437 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-27 23:45:55,437 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-27 23:45:55,437 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-27 23:45:55,438 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-27 23:45:55,438 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-27 23:45:55,439 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-27 23:45:55,439 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-27 23:45:55,440 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-27 23:45:55,441 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-27 23:45:55,441 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-27 23:45:55,442 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-27 23:45:55,442 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-27 23:45:55,443 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-27 23:45:55,443 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-27 23:45:55,443 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-27 23:45:55,444 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-27 23:45:55,445 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-27 23:45:55,445 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-27 23:45:55,472 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-27 23:45:55,472 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-27 23:45:55,473 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-27 23:45:55,473 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-27 23:45:55,474 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-27 23:45:55,474 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-27 23:45:55,475 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-27 23:45:55,475 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-27 23:45:55,475 INFO L138 SettingsManager]: * Use SBE=true [2021-12-27 23:45:55,475 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-27 23:45:55,476 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-27 23:45:55,476 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-27 23:45:55,476 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-27 23:45:55,476 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-27 23:45:55,476 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-27 23:45:55,477 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-27 23:45:55,477 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-27 23:45:55,477 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-27 23:45:55,477 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-27 23:45:55,477 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-27 23:45:55,477 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-27 23:45:55,477 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-27 23:45:55,478 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-27 23:45:55,478 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-27 23:45:55,478 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-27 23:45:55,478 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-27 23:45:55,478 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-27 23:45:55,478 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-27 23:45:55,478 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-27 23:45:55,479 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-27 23:45:55,479 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-27 23:45:55,479 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-27 23:45:55,479 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-27 23:45:55,479 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0eca46c14885d62179341dcc13b398752af03e020a80dcf533f4c9afc7372707 [2021-12-27 23:45:55,733 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-27 23:45:55,761 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-27 23:45:55,764 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-27 23:45:55,765 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-27 23:45:55,766 INFO L275 PluginConnector]: CDTParser initialized [2021-12-27 23:45:55,767 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/heap-manipulation/dll_of_dll-2.i [2021-12-27 23:45:55,811 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ae045818/7cd9faf7c7d54653829a71f41cd9539a/FLAG4a090c3f8 [2021-12-27 23:45:56,231 INFO L306 CDTParser]: Found 1 translation units. [2021-12-27 23:45:56,232 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/heap-manipulation/dll_of_dll-2.i [2021-12-27 23:45:56,240 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ae045818/7cd9faf7c7d54653829a71f41cd9539a/FLAG4a090c3f8 [2021-12-27 23:45:56,249 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ae045818/7cd9faf7c7d54653829a71f41cd9539a [2021-12-27 23:45:56,252 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-27 23:45:56,253 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-27 23:45:56,255 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-27 23:45:56,255 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-27 23:45:56,258 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-27 23:45:56,259 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.12 11:45:56" (1/1) ... [2021-12-27 23:45:56,260 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6623683a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:45:56, skipping insertion in model container [2021-12-27 23:45:56,260 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.12 11:45:56" (1/1) ... [2021-12-27 23:45:56,264 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-27 23:45:56,302 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-27 23:45:56,498 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] [2021-12-27 23:45:56,552 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-27 23:45:56,558 INFO L203 MainTranslator]: Completed pre-run [2021-12-27 23:45:56,589 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] [2021-12-27 23:45:56,611 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-27 23:45:56,631 INFO L208 MainTranslator]: Completed translation [2021-12-27 23:45:56,631 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:45:56 WrapperNode [2021-12-27 23:45:56,631 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-27 23:45:56,632 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-27 23:45:56,633 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-27 23:45:56,633 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-27 23:45:56,637 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:45:56" (1/1) ... [2021-12-27 23:45:56,650 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:45:56" (1/1) ... [2021-12-27 23:45:56,681 INFO L137 Inliner]: procedures = 140, calls = 94, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 228 [2021-12-27 23:45:56,682 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-27 23:45:56,682 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-27 23:45:56,683 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-27 23:45:56,683 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-27 23:45:56,688 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:45:56" (1/1) ... [2021-12-27 23:45:56,688 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:45:56" (1/1) ... [2021-12-27 23:45:56,704 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:45:56" (1/1) ... [2021-12-27 23:45:56,711 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:45:56" (1/1) ... [2021-12-27 23:45:56,719 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:45:56" (1/1) ... [2021-12-27 23:45:56,724 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:45:56" (1/1) ... [2021-12-27 23:45:56,726 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:45:56" (1/1) ... [2021-12-27 23:45:56,729 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-27 23:45:56,730 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-27 23:45:56,730 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-27 23:45:56,730 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-27 23:45:56,730 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:45:56" (1/1) ... [2021-12-27 23:45:56,741 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-27 23:45:56,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-27 23:45:56,758 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) [2021-12-27 23:45:56,763 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 [2021-12-27 23:45:56,779 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2021-12-27 23:45:56,779 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2021-12-27 23:45:56,779 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_base [2021-12-27 23:45:56,779 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_base [2021-12-27 23:45:56,780 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-27 23:45:56,780 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-27 23:45:56,780 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_master [2021-12-27 23:45:56,786 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_master [2021-12-27 23:45:56,786 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-27 23:45:56,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-27 23:45:56,787 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-12-27 23:45:56,787 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-12-27 23:45:56,787 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-27 23:45:56,788 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-27 23:45:56,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-27 23:45:56,788 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_generic [2021-12-27 23:45:56,788 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_generic [2021-12-27 23:45:56,788 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_slave [2021-12-27 23:45:56,789 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_slave [2021-12-27 23:45:56,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-27 23:45:56,789 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-27 23:45:56,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-27 23:45:56,919 INFO L234 CfgBuilder]: Building ICFG [2021-12-27 23:45:56,927 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-27 23:45:57,231 INFO L275 CfgBuilder]: Performing block encoding [2021-12-27 23:45:57,237 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-27 23:45:57,237 INFO L299 CfgBuilder]: Removed 38 assume(true) statements. [2021-12-27 23:45:57,239 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.12 11:45:57 BoogieIcfgContainer [2021-12-27 23:45:57,239 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-27 23:45:57,240 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-27 23:45:57,240 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-27 23:45:57,242 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-27 23:45:57,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.12 11:45:56" (1/3) ... [2021-12-27 23:45:57,243 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@303c08f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.12 11:45:57, skipping insertion in model container [2021-12-27 23:45:57,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:45:56" (2/3) ... [2021-12-27 23:45:57,243 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@303c08f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.12 11:45:57, skipping insertion in model container [2021-12-27 23:45:57,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.12 11:45:57" (3/3) ... [2021-12-27 23:45:57,244 INFO L111 eAbstractionObserver]: Analyzing ICFG dll_of_dll-2.i [2021-12-27 23:45:57,248 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-27 23:45:57,248 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-27 23:45:57,286 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-27 23:45:57,293 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-27 23:45:57,294 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-27 23:45:57,307 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) [2021-12-27 23:45:57,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-12-27 23:45:57,312 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 23:45:57,313 INFO L514 BasicCegarLoop]: 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] [2021-12-27 23:45:57,313 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 23:45:57,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 23:45:57,317 INFO L85 PathProgramCache]: Analyzing trace with hash 760908611, now seen corresponding path program 1 times [2021-12-27 23:45:57,322 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-27 23:45:57,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851907637] [2021-12-27 23:45:57,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 23:45:57,323 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-27 23:45:57,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 23:45:57,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-27 23:45:57,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 23:45:57,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-27 23:45:57,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 23:45:57,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-27 23:45:57,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 23:45:57,583 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-27 23:45:57,584 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-27 23:45:57,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851907637] [2021-12-27 23:45:57,585 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851907637] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-27 23:45:57,585 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-27 23:45:57,585 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-27 23:45:57,586 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730925194] [2021-12-27 23:45:57,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-27 23:45:57,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-27 23:45:57,589 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-27 23:45:57,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-27 23:45:57,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-27 23:45:57,612 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) [2021-12-27 23:45:57,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-27 23:45:57,722 INFO L93 Difference]: Finished difference Result 251 states and 429 transitions. [2021-12-27 23:45:57,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-27 23:45:57,724 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 [2021-12-27 23:45:57,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-27 23:45:57,729 INFO L225 Difference]: With dead ends: 251 [2021-12-27 23:45:57,729 INFO L226 Difference]: Without dead ends: 120 [2021-12-27 23:45:57,732 INFO L932 BasicCegarLoop]: 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 [2021-12-27 23:45:57,734 INFO L933 BasicCegarLoop]: 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 [2021-12-27 23:45:57,735 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 210 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-27 23:45:57,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-12-27 23:45:57,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2021-12-27 23:45:57,760 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) [2021-12-27 23:45:57,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 149 transitions. [2021-12-27 23:45:57,762 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 149 transitions. Word has length 37 [2021-12-27 23:45:57,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-27 23:45:57,762 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 149 transitions. [2021-12-27 23:45:57,762 INFO L471 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) [2021-12-27 23:45:57,762 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 149 transitions. [2021-12-27 23:45:57,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-12-27 23:45:57,763 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 23:45:57,763 INFO L514 BasicCegarLoop]: 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] [2021-12-27 23:45:57,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-27 23:45:57,764 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 23:45:57,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 23:45:57,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1675514385, now seen corresponding path program 1 times [2021-12-27 23:45:57,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-27 23:45:57,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681180681] [2021-12-27 23:45:57,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 23:45:57,765 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-27 23:45:57,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 23:45:57,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-27 23:45:57,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 23:45:57,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-27 23:45:57,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 23:45:57,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-27 23:45:57,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 23:45:57,999 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-27 23:45:58,000 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-27 23:45:58,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681180681] [2021-12-27 23:45:58,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681180681] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-27 23:45:58,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1630070963] [2021-12-27 23:45:58,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 23:45:58,004 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-27 23:45:58,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-27 23:45:58,020 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) [2021-12-27 23:45:58,050 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-27 23:45:58,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 23:45:58,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-27 23:45:58,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-27 23:45:58,424 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-27 23:45:58,425 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-27 23:45:58,676 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-27 23:45:58,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1630070963] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-27 23:45:58,677 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-27 23:45:58,677 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5] total 12 [2021-12-27 23:45:58,677 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206072293] [2021-12-27 23:45:58,678 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-27 23:45:58,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-27 23:45:58,678 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-27 23:45:58,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-27 23:45:58,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2021-12-27 23:45:58,679 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) [2021-12-27 23:45:59,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-27 23:45:59,002 INFO L93 Difference]: Finished difference Result 250 states and 324 transitions. [2021-12-27 23:45:59,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-27 23:45:59,003 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 [2021-12-27 23:45:59,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-27 23:45:59,005 INFO L225 Difference]: With dead ends: 250 [2021-12-27 23:45:59,005 INFO L226 Difference]: Without dead ends: 133 [2021-12-27 23:45:59,006 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 77 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2021-12-27 23:45:59,006 INFO L933 BasicCegarLoop]: 138 mSDtfsCounter, 55 mSDsluCounter, 769 mSDsCounter, 0 mSdLazyCounter, 440 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 907 SdHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-27 23:45:59,006 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 907 Invalid, 483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 440 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-27 23:45:59,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2021-12-27 23:45:59,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2021-12-27 23:45:59,016 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) [2021-12-27 23:45:59,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 164 transitions. [2021-12-27 23:45:59,016 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 164 transitions. Word has length 38 [2021-12-27 23:45:59,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-27 23:45:59,017 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 164 transitions. [2021-12-27 23:45:59,017 INFO L471 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) [2021-12-27 23:45:59,017 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 164 transitions. [2021-12-27 23:45:59,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-12-27 23:45:59,019 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 23:45:59,019 INFO L514 BasicCegarLoop]: 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] [2021-12-27 23:45:59,040 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-27 23:45:59,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-27 23:45:59,235 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 23:45:59,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 23:45:59,236 INFO L85 PathProgramCache]: Analyzing trace with hash 800158065, now seen corresponding path program 1 times [2021-12-27 23:45:59,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-27 23:45:59,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922541200] [2021-12-27 23:45:59,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 23:45:59,236 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-27 23:45:59,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 23:45:59,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-27 23:45:59,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 23:45:59,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-27 23:45:59,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 23:45:59,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-27 23:45:59,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 23:45:59,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-27 23:45:59,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 23:45:59,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-27 23:45:59,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 23:45:59,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-27 23:45:59,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 23:45:59,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-27 23:45:59,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 23:45:59,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-27 23:45:59,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 23:45:59,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-27 23:45:59,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 23:45:59,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-27 23:45:59,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 23:46:00,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-27 23:46:00,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 23:46:00,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-27 23:46:00,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 23:46:00,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-27 23:46:00,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 23:46:00,035 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 27 proven. 23 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-12-27 23:46:00,035 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-27 23:46:00,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922541200] [2021-12-27 23:46:00,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922541200] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-27 23:46:00,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [320652860] [2021-12-27 23:46:00,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 23:46:00,037 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-27 23:46:00,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-27 23:46:00,038 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) [2021-12-27 23:46:00,039 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-27 23:46:00,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 23:46:00,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 948 conjuncts, 45 conjunts are in the unsatisfiable core [2021-12-27 23:46:00,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-27 23:46:00,467 INFO L353 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2021-12-27 23:46:00,467 INFO L387 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 51 [2021-12-27 23:46:00,472 INFO L387 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 [2021-12-27 23:46:00,477 INFO L387 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 [2021-12-27 23:46:00,504 INFO L387 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 11 treesize of output 7 [2021-12-27 23:46:00,517 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-27 23:46:00,518 INFO L387 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 34 [2021-12-27 23:46:00,520 INFO L387 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 22 treesize of output 16 [2021-12-27 23:46:00,559 INFO L387 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 [2021-12-27 23:46:00,587 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 33 proven. 5 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2021-12-27 23:46:00,588 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-27 23:46:00,879 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-27 23:46:00,879 INFO L387 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 [2021-12-27 23:46:00,884 INFO L387 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 [2021-12-27 23:46:00,901 INFO L387 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 [2021-12-27 23:46:00,951 INFO L387 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 [2021-12-27 23:46:00,958 INFO L387 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 [2021-12-27 23:46:00,980 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-27 23:46:00,981 INFO L387 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 [2021-12-27 23:46:00,984 INFO L387 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 [2021-12-27 23:46:00,988 INFO L387 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 [2021-12-27 23:46:01,041 INFO L387 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 [2021-12-27 23:46:01,048 INFO L387 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 [2021-12-27 23:46:01,199 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 32 proven. 2 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-12-27 23:46:01,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [320652860] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-27 23:46:01,200 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-27 23:46:01,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 16, 15] total 27 [2021-12-27 23:46:01,200 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529114299] [2021-12-27 23:46:01,200 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-27 23:46:01,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-12-27 23:46:01,200 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-27 23:46:01,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-12-27 23:46:01,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=644, Unknown=0, NotChecked=0, Total=702 [2021-12-27 23:46:01,201 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) [2021-12-27 23:46:02,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-27 23:46:02,372 INFO L93 Difference]: Finished difference Result 330 states and 410 transitions. [2021-12-27 23:46:02,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-12-27 23:46:02,375 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 [2021-12-27 23:46:02,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-27 23:46:02,376 INFO L225 Difference]: With dead ends: 330 [2021-12-27 23:46:02,376 INFO L226 Difference]: Without dead ends: 201 [2021-12-27 23:46:02,377 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=175, Invalid=1895, Unknown=0, NotChecked=0, Total=2070 [2021-12-27 23:46:02,378 INFO L933 BasicCegarLoop]: 131 mSDtfsCounter, 256 mSDsluCounter, 1819 mSDsCounter, 0 mSdLazyCounter, 1753 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 1950 SdHoareTripleChecker+Invalid, 1830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1753 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-27 23:46:02,378 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [258 Valid, 1950 Invalid, 1830 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1753 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-27 23:46:02,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2021-12-27 23:46:02,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 166. [2021-12-27 23:46:02,388 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) [2021-12-27 23:46:02,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 204 transitions. [2021-12-27 23:46:02,389 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 204 transitions. Word has length 110 [2021-12-27 23:46:02,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-27 23:46:02,389 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 204 transitions. [2021-12-27 23:46:02,389 INFO L471 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) [2021-12-27 23:46:02,389 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 204 transitions. [2021-12-27 23:46:02,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-12-27 23:46:02,390 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 23:46:02,390 INFO L514 BasicCegarLoop]: 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] [2021-12-27 23:46:02,416 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-27 23:46:02,613 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-12-27 23:46:02,613 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 23:46:02,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 23:46:02,614 INFO L85 PathProgramCache]: Analyzing trace with hash 614553281, now seen corresponding path program 1 times [2021-12-27 23:46:02,614 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-27 23:46:02,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030819357] [2021-12-27 23:46:02,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 23:46:02,614 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-27 23:46:02,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 23:46:02,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-27 23:46:02,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 23:46:02,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-27 23:46:02,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 23:46:02,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-27 23:46:02,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 23:46:03,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-27 23:46:03,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 23:46:03,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-27 23:46:03,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 23:46:03,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-27 23:46:03,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 23:46:03,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-27 23:46:03,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 23:46:03,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-27 23:46:03,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 23:46:03,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-27 23:46:03,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 23:46:03,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-27 23:46:03,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 23:46:03,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-27 23:46:03,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 23:46:03,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-27 23:46:03,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 23:46:03,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-27 23:46:03,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 23:46:03,141 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 15 proven. 23 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2021-12-27 23:46:03,141 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-27 23:46:03,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030819357] [2021-12-27 23:46:03,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030819357] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-27 23:46:03,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1540729723] [2021-12-27 23:46:03,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 23:46:03,142 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-27 23:46:03,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-27 23:46:03,142 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) [2021-12-27 23:46:03,143 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-27 23:46:03,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 23:46:03,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 972 conjuncts, 55 conjunts are in the unsatisfiable core [2021-12-27 23:46:03,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-27 23:46:03,612 INFO L387 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 [2021-12-27 23:46:03,666 INFO L387 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 [2021-12-27 23:46:03,819 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2702 (Array Int Int)) (|##fun~$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 [2021-12-27 23:46:03,846 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2702 (Array Int Int)) (|##fun~$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 [2021-12-27 23:46:03,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:46:03,977 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 80 proven. 3 refuted. 0 times theorem prover too weak. 46 trivial. 5 not checked. [2021-12-27 23:46:03,978 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-27 23:46:04,664 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_##fun~$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 [2021-12-27 23:46:04,665 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1540729723] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-27 23:46:04,665 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-27 23:46:04,666 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 15] total 24 [2021-12-27 23:46:04,666 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468138051] [2021-12-27 23:46:04,666 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-27 23:46:04,666 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-12-27 23:46:04,666 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-27 23:46:04,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-12-27 23:46:04,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=414, Unknown=3, NotChecked=126, Total=600 [2021-12-27 23:46:04,667 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) [2021-12-27 23:46:04,875 WARN L860 $PredicateComparison]: unable to prove that (and (not (= (select (select |c_#memory_$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 [2021-12-27 23:46:05,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-27 23:46:05,505 INFO L93 Difference]: Finished difference Result 338 states and 426 transitions. [2021-12-27 23:46:05,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-27 23:46:05,505 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 [2021-12-27 23:46:05,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-27 23:46:05,507 INFO L225 Difference]: With dead ends: 338 [2021-12-27 23:46:05,507 INFO L226 Difference]: Without dead ends: 180 [2021-12-27 23:46:05,508 INFO L932 BasicCegarLoop]: 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 [2021-12-27 23:46:05,508 INFO L933 BasicCegarLoop]: 126 mSDtfsCounter, 54 mSDsluCounter, 1195 mSDsCounter, 0 mSdLazyCounter, 1223 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 1321 SdHoareTripleChecker+Invalid, 1706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 440 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-27 23:46:05,509 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 1321 Invalid, 1706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1223 Invalid, 0 Unknown, 440 Unchecked, 0.5s Time] [2021-12-27 23:46:05,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2021-12-27 23:46:05,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 171. [2021-12-27 23:46:05,519 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) [2021-12-27 23:46:05,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 210 transitions. [2021-12-27 23:46:05,521 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 210 transitions. Word has length 113 [2021-12-27 23:46:05,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-27 23:46:05,521 INFO L470 AbstractCegarLoop]: Abstraction has 171 states and 210 transitions. [2021-12-27 23:46:05,521 INFO L471 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) [2021-12-27 23:46:05,521 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 210 transitions. [2021-12-27 23:46:05,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-12-27 23:46:05,523 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 23:46:05,523 INFO L514 BasicCegarLoop]: 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] [2021-12-27 23:46:05,543 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-27 23:46:05,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-27 23:46:05,739 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 23:46:05,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 23:46:05,740 INFO L85 PathProgramCache]: Analyzing trace with hash 522299907, now seen corresponding path program 1 times [2021-12-27 23:46:05,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-27 23:46:05,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060176734] [2021-12-27 23:46:05,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 23:46:05,740 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-27 23:46:05,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 23:46:06,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-27 23:46:06,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 23:46:06,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-27 23:46:06,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 23:46:06,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-27 23:46:06,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 23:46:06,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-27 23:46:06,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 23:46:06,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-27 23:46:06,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 23:46:06,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-27 23:46:06,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 23:46:06,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-27 23:46:06,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 23:46:06,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-27 23:46:06,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 23:46:06,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-27 23:46:06,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 23:46:06,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-27 23:46:06,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 23:46:07,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-27 23:46:07,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat