./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 791161d1 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-?-791161d [2022-07-22 14:35:15,717 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 14:35:15,720 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 14:35:15,766 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 14:35:15,767 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 14:35:15,768 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 14:35:15,770 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 14:35:15,772 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 14:35:15,774 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 14:35:15,779 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 14:35:15,780 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 14:35:15,782 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 14:35:15,783 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 14:35:15,785 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 14:35:15,786 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 14:35:15,789 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 14:35:15,790 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 14:35:15,792 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 14:35:15,793 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 14:35:15,799 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 14:35:15,802 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 14:35:15,803 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 14:35:15,805 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 14:35:15,806 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 14:35:15,807 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 14:35:15,814 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 14:35:15,815 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 14:35:15,815 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 14:35:15,817 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 14:35:15,817 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 14:35:15,818 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 14:35:15,819 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 14:35:15,820 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 14:35:15,821 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 14:35:15,821 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 14:35:15,822 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 14:35:15,822 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 14:35:15,823 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 14:35:15,823 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 14:35:15,823 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 14:35:15,824 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 14:35:15,826 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 14:35:15,827 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 14:35:15,866 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 14:35:15,867 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 14:35:15,867 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 14:35:15,868 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 14:35:15,868 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 14:35:15,869 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 14:35:15,869 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 14:35:15,869 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 14:35:15,870 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 14:35:15,871 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 14:35:15,871 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 14:35:15,871 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 14:35:15,871 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 14:35:15,871 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 14:35:15,872 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 14:35:15,872 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 14:35:15,872 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 14:35:15,872 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 14:35:15,872 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 14:35:15,874 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 14:35:15,874 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 14:35:15,874 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 14:35:15,874 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 14:35:15,874 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 14:35:15,875 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 14:35:15,875 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 14:35:15,875 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 14:35:15,875 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 14:35:15,876 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 14:35:15,876 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 14:35:15,876 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 14:35:15,876 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 14:35:15,877 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 14:35:15,877 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0eca46c14885d62179341dcc13b398752af03e020a80dcf533f4c9afc7372707 [2022-07-22 14:35:16,131 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 14:35:16,147 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 14:35:16,149 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 14:35:16,150 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 14:35:16,151 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 14:35:16,152 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/heap-manipulation/dll_of_dll-2.i [2022-07-22 14:35:16,214 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad655671c/e0e647847c7745e1af242decae15170c/FLAG722d1f056 [2022-07-22 14:35:16,607 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 14:35:16,608 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/heap-manipulation/dll_of_dll-2.i [2022-07-22 14:35:16,617 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad655671c/e0e647847c7745e1af242decae15170c/FLAG722d1f056 [2022-07-22 14:35:16,969 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad655671c/e0e647847c7745e1af242decae15170c [2022-07-22 14:35:16,971 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 14:35:16,973 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 14:35:16,974 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 14:35:16,974 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 14:35:16,979 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 14:35:16,980 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 02:35:16" (1/1) ... [2022-07-22 14:35:16,981 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27b36990 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:35:16, skipping insertion in model container [2022-07-22 14:35:16,981 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 02:35:16" (1/1) ... [2022-07-22 14:35:16,987 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 14:35:17,018 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 14:35:17,321 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] [2022-07-22 14:35:17,389 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 14:35:17,398 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 14:35:17,422 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] [2022-07-22 14:35:17,441 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 14:35:17,474 INFO L208 MainTranslator]: Completed translation [2022-07-22 14:35:17,475 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:35:17 WrapperNode [2022-07-22 14:35:17,475 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 14:35:17,476 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 14:35:17,476 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 14:35:17,476 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 14:35:17,482 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:35:17" (1/1) ... [2022-07-22 14:35:17,495 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:35:17" (1/1) ... [2022-07-22 14:35:17,526 INFO L137 Inliner]: procedures = 140, calls = 94, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 228 [2022-07-22 14:35:17,527 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 14:35:17,527 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 14:35:17,527 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 14:35:17,528 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 14:35:17,535 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:35:17" (1/1) ... [2022-07-22 14:35:17,536 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:35:17" (1/1) ... [2022-07-22 14:35:17,552 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:35:17" (1/1) ... [2022-07-22 14:35:17,552 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:35:17" (1/1) ... [2022-07-22 14:35:17,563 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:35:17" (1/1) ... [2022-07-22 14:35:17,570 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:35:17" (1/1) ... [2022-07-22 14:35:17,573 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:35:17" (1/1) ... [2022-07-22 14:35:17,577 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 14:35:17,578 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 14:35:17,578 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 14:35:17,579 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 14:35:17,579 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:35:17" (1/1) ... [2022-07-22 14:35:17,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 14:35:17,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 14:35:17,621 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) [2022-07-22 14:35:17,629 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 [2022-07-22 14:35:17,666 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2022-07-22 14:35:17,666 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2022-07-22 14:35:17,666 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_base [2022-07-22 14:35:17,666 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_base [2022-07-22 14:35:17,666 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-22 14:35:17,666 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 14:35:17,666 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_master [2022-07-22 14:35:17,667 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_master [2022-07-22 14:35:17,667 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-22 14:35:17,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-22 14:35:17,667 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-07-22 14:35:17,667 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-07-22 14:35:17,667 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-22 14:35:17,667 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-22 14:35:17,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-22 14:35:17,667 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_generic [2022-07-22 14:35:17,667 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_generic [2022-07-22 14:35:17,667 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_slave [2022-07-22 14:35:17,667 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_slave [2022-07-22 14:35:17,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 14:35:17,667 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 14:35:17,668 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 14:35:17,777 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 14:35:17,778 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 14:35:18,117 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 14:35:18,124 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 14:35:18,124 INFO L299 CfgBuilder]: Removed 38 assume(true) statements. [2022-07-22 14:35:18,126 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 02:35:18 BoogieIcfgContainer [2022-07-22 14:35:18,127 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 14:35:18,128 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 14:35:18,128 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 14:35:18,131 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 14:35:18,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 02:35:16" (1/3) ... [2022-07-22 14:35:18,132 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@208e8990 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 02:35:18, skipping insertion in model container [2022-07-22 14:35:18,132 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:35:17" (2/3) ... [2022-07-22 14:35:18,133 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@208e8990 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 02:35:18, skipping insertion in model container [2022-07-22 14:35:18,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 02:35:18" (3/3) ... [2022-07-22 14:35:18,134 INFO L111 eAbstractionObserver]: Analyzing ICFG dll_of_dll-2.i [2022-07-22 14:35:18,147 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 14:35:18,147 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 14:35:18,194 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 14:35:18,199 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@30c2356a, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@17650d28 [2022-07-22 14:35:18,199 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 14:35:18,204 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) [2022-07-22 14:35:18,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-07-22 14:35:18,212 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 14:35:18,212 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] [2022-07-22 14:35:18,213 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 14:35:18,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 14:35:18,218 INFO L85 PathProgramCache]: Analyzing trace with hash 760908611, now seen corresponding path program 1 times [2022-07-22 14:35:18,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 14:35:18,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081955976] [2022-07-22 14:35:18,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 14:35:18,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 14:35:18,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 14:35:18,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 14:35:18,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 14:35:18,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 14:35:18,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 14:35:18,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 14:35:18,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 14:35:18,528 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-22 14:35:18,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 14:35:18,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081955976] [2022-07-22 14:35:18,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081955976] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 14:35:18,531 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 14:35:18,531 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 14:35:18,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105545475] [2022-07-22 14:35:18,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 14:35:18,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 14:35:18,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 14:35:18,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 14:35:18,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 14:35:18,573 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) [2022-07-22 14:35:18,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 14:35:18,781 INFO L93 Difference]: Finished difference Result 251 states and 429 transitions. [2022-07-22 14:35:18,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 14:35:18,784 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 [2022-07-22 14:35:18,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 14:35:18,795 INFO L225 Difference]: With dead ends: 251 [2022-07-22 14:35:18,795 INFO L226 Difference]: Without dead ends: 120 [2022-07-22 14:35:18,799 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 [2022-07-22 14:35:18,802 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 [2022-07-22 14:35:18,802 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] [2022-07-22 14:35:18,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2022-07-22 14:35:18,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2022-07-22 14:35:18,836 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) [2022-07-22 14:35:18,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 149 transitions. [2022-07-22 14:35:18,841 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 149 transitions. Word has length 37 [2022-07-22 14:35:18,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 14:35:18,842 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 149 transitions. [2022-07-22 14:35:18,842 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) [2022-07-22 14:35:18,843 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 149 transitions. [2022-07-22 14:35:18,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-07-22 14:35:18,847 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 14:35:18,847 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] [2022-07-22 14:35:18,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 14:35:18,848 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 14:35:18,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 14:35:18,849 INFO L85 PathProgramCache]: Analyzing trace with hash 1675514385, now seen corresponding path program 1 times [2022-07-22 14:35:18,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 14:35:18,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714062523] [2022-07-22 14:35:18,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 14:35:18,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 14:35:18,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 14:35:19,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 14:35:19,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 14:35:19,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 14:35:19,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 14:35:19,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 14:35:19,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 14:35:19,231 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-22 14:35:19,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 14:35:19,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714062523] [2022-07-22 14:35:19,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714062523] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 14:35:19,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1457392488] [2022-07-22 14:35:19,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 14:35:19,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 14:35:19,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 14:35:19,247 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) [2022-07-22 14:35:19,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 14:35:19,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 14:35:19,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-22 14:35:19,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 14:35:19,698 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-22 14:35:19,704 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 14:35:19,943 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-22 14:35:19,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1457392488] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 14:35:19,943 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 14:35:19,944 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5] total 12 [2022-07-22 14:35:19,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888002611] [2022-07-22 14:35:19,945 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 14:35:19,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-22 14:35:19,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 14:35:19,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-22 14:35:19,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-07-22 14:35:19,947 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) [2022-07-22 14:35:20,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 14:35:20,354 INFO L93 Difference]: Finished difference Result 250 states and 324 transitions. [2022-07-22 14:35:20,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 14:35:20,355 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 [2022-07-22 14:35:20,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 14:35:20,357 INFO L225 Difference]: With dead ends: 250 [2022-07-22 14:35:20,358 INFO L226 Difference]: Without dead ends: 133 [2022-07-22 14:35:20,359 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 [2022-07-22 14:35:20,360 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 55 mSDsluCounter, 744 mSDsCounter, 0 mSdLazyCounter, 465 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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 [2022-07-22 14:35:20,361 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] [2022-07-22 14:35:20,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2022-07-22 14:35:20,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2022-07-22 14:35:20,375 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) [2022-07-22 14:35:20,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 164 transitions. [2022-07-22 14:35:20,377 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 164 transitions. Word has length 38 [2022-07-22 14:35:20,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 14:35:20,378 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 164 transitions. [2022-07-22 14:35:20,378 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) [2022-07-22 14:35:20,378 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 164 transitions. [2022-07-22 14:35:20,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-07-22 14:35:20,381 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 14:35:20,381 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] [2022-07-22 14:35:20,408 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-22 14:35:20,598 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 [2022-07-22 14:35:20,599 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 14:35:20,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 14:35:20,600 INFO L85 PathProgramCache]: Analyzing trace with hash 800158065, now seen corresponding path program 1 times [2022-07-22 14:35:20,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 14:35:20,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938422962] [2022-07-22 14:35:20,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 14:35:20,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 14:35:20,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 14:35:20,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 14:35:20,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 14:35:21,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 14:35:21,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 14:35:21,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 14:35:21,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 14:35:21,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 14:35:21,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 14:35:21,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 14:35:21,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 14:35:21,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 14:35:21,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 14:35:21,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 14:35:21,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 14:35:21,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 14:35:21,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 14:35:21,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 14:35:21,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 14:35:21,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 14:35:21,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 14:35:21,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 14:35:21,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 14:35:21,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 14:35:21,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 14:35:21,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 14:35:21,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 14:35:21,697 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 27 proven. 23 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-07-22 14:35:21,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 14:35:21,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938422962] [2022-07-22 14:35:21,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938422962] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 14:35:21,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [209328714] [2022-07-22 14:35:21,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 14:35:21,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 14:35:21,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 14:35:21,700 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) [2022-07-22 14:35:21,701 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-22 14:35:21,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 14:35:21,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 948 conjuncts, 45 conjunts are in the unsatisfiable core [2022-07-22 14:35:21,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 14:35:22,122 INFO L356 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2022-07-22 14:35:22,124 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 [2022-07-22 14:35:22,131 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 [2022-07-22 14:35:22,139 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 [2022-07-22 14:35:22,180 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 14:35:22,182 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 [2022-07-22 14:35:22,186 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 [2022-07-22 14:35:22,252 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 [2022-07-22 14:35:22,287 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 33 proven. 5 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2022-07-22 14:35:22,287 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 14:35:22,642 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-22 14:35:22,642 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 [2022-07-22 14:35:22,650 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 [2022-07-22 14:35:22,665 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 [2022-07-22 14:35:22,731 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 6 treesize of output 4 [2022-07-22 14:35:22,741 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 [2022-07-22 14:35:22,762 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-22 14:35:22,763 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 [2022-07-22 14:35:22,766 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 [2022-07-22 14:35:22,771 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 [2022-07-22 14:35:22,813 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 [2022-07-22 14:35:22,824 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 [2022-07-22 14:35:22,935 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 32 proven. 2 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-07-22 14:35:22,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [209328714] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 14:35:22,935 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 14:35:22,936 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 16, 15] total 27 [2022-07-22 14:35:22,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866814656] [2022-07-22 14:35:22,937 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 14:35:22,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-07-22 14:35:22,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 14:35:22,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-07-22 14:35:22,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=644, Unknown=0, NotChecked=0, Total=702 [2022-07-22 14:35:22,942 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) [2022-07-22 14:35:24,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 14:35:24,489 INFO L93 Difference]: Finished difference Result 330 states and 410 transitions. [2022-07-22 14:35:24,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-07-22 14:35:24,490 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 [2022-07-22 14:35:24,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 14:35:24,492 INFO L225 Difference]: With dead ends: 330 [2022-07-22 14:35:24,492 INFO L226 Difference]: Without dead ends: 201 [2022-07-22 14:35:24,493 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=175, Invalid=1895, Unknown=0, NotChecked=0, Total=2070 [2022-07-22 14:35:24,494 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 256 mSDsluCounter, 1730 mSDsCounter, 0 mSdLazyCounter, 1842 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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, 1.0s IncrementalHoareTripleChecker+Time [2022-07-22 14:35:24,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 1861 Invalid, 1919 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1842 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-22 14:35:24,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2022-07-22 14:35:24,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 166. [2022-07-22 14:35:24,507 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) [2022-07-22 14:35:24,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 204 transitions. [2022-07-22 14:35:24,509 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 204 transitions. Word has length 110 [2022-07-22 14:35:24,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 14:35:24,509 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 204 transitions. [2022-07-22 14:35:24,510 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) [2022-07-22 14:35:24,510 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 204 transitions. [2022-07-22 14:35:24,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-22 14:35:24,513 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 14:35:24,513 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] [2022-07-22 14:35:24,545 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-07-22 14:35:24,739 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 [2022-07-22 14:35:24,740 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 14:35:24,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 14:35:24,740 INFO L85 PathProgramCache]: Analyzing trace with hash 614553281, now seen corresponding path program 1 times [2022-07-22 14:35:24,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 14:35:24,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847083426] [2022-07-22 14:35:24,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 14:35:24,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 14:35:24,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 14:35:24,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 14:35:24,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 14:35:25,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 14:35:25,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 14:35:25,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 14:35:25,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 14:35:25,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 14:35:25,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 14:35:25,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 14:35:25,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 14:35:25,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 14:35:25,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 14:35:25,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 14:35:25,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 14:35:25,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 14:35:25,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 14:35:25,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 14:35:25,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 14:35:25,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 14:35:25,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 14:35:25,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 14:35:25,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 14:35:25,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 14:35:25,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 14:35:25,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 14:35:25,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 14:35:25,448 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 15 proven. 23 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2022-07-22 14:35:25,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 14:35:25,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847083426] [2022-07-22 14:35:25,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847083426] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 14:35:25,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [742476926] [2022-07-22 14:35:25,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 14:35:25,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 14:35:25,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 14:35:25,451 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) [2022-07-22 14:35:25,478 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-22 14:35:25,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 14:35:25,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 972 conjuncts, 55 conjunts are in the unsatisfiable core [2022-07-22 14:35:25,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 14:35:25,945 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 [2022-07-22 14:35:25,998 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 [2022-07-22 14:35:26,138 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 [2022-07-22 14:35:26,156 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 [2022-07-22 14:35:26,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 14:35:26,183 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 80 proven. 3 refuted. 0 times theorem prover too weak. 46 trivial. 5 not checked. [2022-07-22 14:35:26,183 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 14:35:27,183 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 [2022-07-22 14:35:27,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [742476926] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 14:35:27,185 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 14:35:27,186 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 15] total 24 [2022-07-22 14:35:27,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052295092] [2022-07-22 14:35:27,186 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 14:35:27,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-07-22 14:35:27,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 14:35:27,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-07-22 14:35:27,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=414, Unknown=3, NotChecked=126, Total=600 [2022-07-22 14:35:27,188 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) [2022-07-22 14:35:27,483 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 [2022-07-22 14:35:28,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 14:35:28,294 INFO L93 Difference]: Finished difference Result 338 states and 426 transitions. [2022-07-22 14:35:28,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-22 14:35:28,295 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 [2022-07-22 14:35:28,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 14:35:28,296 INFO L225 Difference]: With dead ends: 338 [2022-07-22 14:35:28,297 INFO L226 Difference]: Without dead ends: 180 [2022-07-22 14:35:28,297 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=144, Invalid=1054, Unknown=8, NotChecked=276, Total=1482 [2022-07-22 14:35:28,298 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 54 mSDsluCounter, 1190 mSDsCounter, 0 mSdLazyCounter, 1228 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.7s IncrementalHoareTripleChecker+Time [2022-07-22 14:35:28,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 1316 Invalid, 1711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1228 Invalid, 0 Unknown, 440 Unchecked, 0.7s Time] [2022-07-22 14:35:28,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2022-07-22 14:35:28,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 171. [2022-07-22 14:35:28,315 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) [2022-07-22 14:35:28,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 210 transitions. [2022-07-22 14:35:28,319 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 210 transitions. Word has length 113 [2022-07-22 14:35:28,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 14:35:28,319 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 210 transitions. [2022-07-22 14:35:28,320 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) [2022-07-22 14:35:28,320 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 210 transitions. [2022-07-22 14:35:28,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-22 14:35:28,323 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 14:35:28,323 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] [2022-07-22 14:35:28,344 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-22 14:35:28,531 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 [2022-07-22 14:35:28,532 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 14:35:28,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 14:35:28,532 INFO L85 PathProgramCache]: Analyzing trace with hash 522299907, now seen corresponding path program 1 times [2022-07-22 14:35:28,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 14:35:28,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498881240] [2022-07-22 14:35:28,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 14:35:28,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 14:35:28,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 14:35:28,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 14:35:29,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 14:35:29,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 14:35:29,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 14:35:29,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 14:35:29,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 14:35:29,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 14:35:29,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 14:35:29,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 14:35:29,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 14:35:29,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 14:35:29,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 14:35:29,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 14:35:29,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 14:35:29,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 14:35:29,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 14:35:29,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 14:35:29,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 14:35:30,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 14:35:30,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 14:35:30,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 14:35:31,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat