./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/heap-manipulation/dll_of_dll-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/heap-manipulation/dll_of_dll-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0e14b8baad7c8f50637b16b3adcb891ef363d7563e7c4e0e74695e7b8e3d1787 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 01:58:25,727 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 01:58:25,729 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 01:58:25,753 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 01:58:25,756 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 01:58:25,757 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 01:58:25,759 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 01:58:25,763 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 01:58:25,765 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 01:58:25,767 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 01:58:25,768 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 01:58:25,769 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 01:58:25,770 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 01:58:25,774 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 01:58:25,775 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 01:58:25,777 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 01:58:25,779 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 01:58:25,783 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 01:58:25,785 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 01:58:25,789 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 01:58:25,793 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 01:58:25,795 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 01:58:25,796 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 01:58:25,798 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 01:58:25,799 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 01:58:25,809 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 01:58:25,813 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 01:58:25,813 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 01:58:25,814 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 01:58:25,815 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 01:58:25,816 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 01:58:25,816 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 01:58:25,819 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 01:58:25,820 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 01:58:25,821 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 01:58:25,823 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 01:58:25,823 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 01:58:25,824 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 01:58:25,824 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 01:58:25,824 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 01:58:25,825 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 01:58:25,831 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 01:58:25,832 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 01:58:25,860 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 01:58:25,860 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 01:58:25,861 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 01:58:25,861 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 01:58:25,862 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 01:58:25,862 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 01:58:25,863 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 01:58:25,863 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 01:58:25,864 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 01:58:25,865 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 01:58:25,865 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 01:58:25,865 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 01:58:25,865 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 01:58:25,866 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 01:58:25,866 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 01:58:25,866 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 01:58:25,866 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 01:58:25,866 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 01:58:25,867 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 01:58:25,867 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 01:58:25,867 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 01:58:25,867 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 01:58:25,868 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 01:58:25,868 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 01:58:25,868 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 01:58:25,868 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 01:58:25,869 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 01:58:25,869 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 01:58:25,869 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 01:58:25,869 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 01:58:25,870 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 01:58:25,870 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 01:58:25,870 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 01:58:25,870 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0e14b8baad7c8f50637b16b3adcb891ef363d7563e7c4e0e74695e7b8e3d1787 [2022-07-21 01:58:26,222 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 01:58:26,249 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 01:58:26,251 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 01:58:26,252 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 01:58:26,253 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 01:58:26,256 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/heap-manipulation/dll_of_dll-1.i [2022-07-21 01:58:26,314 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da054080f/bceb78d828544e5d8a282aa9cd50a840/FLAGabf7e4a23 [2022-07-21 01:58:26,757 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 01:58:26,758 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/heap-manipulation/dll_of_dll-1.i [2022-07-21 01:58:26,771 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da054080f/bceb78d828544e5d8a282aa9cd50a840/FLAGabf7e4a23 [2022-07-21 01:58:27,114 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da054080f/bceb78d828544e5d8a282aa9cd50a840 [2022-07-21 01:58:27,116 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 01:58:27,117 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 01:58:27,119 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 01:58:27,119 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 01:58:27,125 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 01:58:27,129 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:58:27" (1/1) ... [2022-07-21 01:58:27,130 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7813eec7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:58:27, skipping insertion in model container [2022-07-21 01:58:27,131 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:58:27" (1/1) ... [2022-07-21 01:58:27,137 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 01:58:27,174 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 01:58:27,474 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-1.i[22634,22647] [2022-07-21 01:58:27,547 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 01:58:27,555 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 01:58:27,596 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-1.i[22634,22647] [2022-07-21 01:58:27,621 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 01:58:27,659 INFO L208 MainTranslator]: Completed translation [2022-07-21 01:58:27,660 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:58:27 WrapperNode [2022-07-21 01:58:27,660 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 01:58:27,661 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 01:58:27,662 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 01:58:27,662 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 01:58:27,668 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:58:27" (1/1) ... [2022-07-21 01:58:27,697 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:58:27" (1/1) ... [2022-07-21 01:58:27,736 INFO L137 Inliner]: procedures = 140, calls = 94, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 228 [2022-07-21 01:58:27,736 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 01:58:27,738 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 01:58:27,738 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 01:58:27,738 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 01:58:27,745 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:58:27" (1/1) ... [2022-07-21 01:58:27,746 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:58:27" (1/1) ... [2022-07-21 01:58:27,760 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:58:27" (1/1) ... [2022-07-21 01:58:27,768 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:58:27" (1/1) ... [2022-07-21 01:58:27,779 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:58:27" (1/1) ... [2022-07-21 01:58:27,798 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:58:27" (1/1) ... [2022-07-21 01:58:27,800 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:58:27" (1/1) ... [2022-07-21 01:58:27,804 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 01:58:27,805 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 01:58:27,805 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 01:58:27,805 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 01:58:27,806 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:58:27" (1/1) ... [2022-07-21 01:58:27,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 01:58:27,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 01:58:27,849 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) [2022-07-21 01:58:27,867 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 [2022-07-21 01:58:27,894 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2022-07-21 01:58:27,894 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2022-07-21 01:58:27,895 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_base [2022-07-21 01:58:27,895 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_base [2022-07-21 01:58:27,895 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-21 01:58:27,895 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 01:58:27,895 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_master [2022-07-21 01:58:27,895 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_master [2022-07-21 01:58:27,896 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 01:58:27,896 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-21 01:58:27,896 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-07-21 01:58:27,896 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-07-21 01:58:27,897 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-21 01:58:27,897 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 01:58:27,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-21 01:58:27,897 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_generic [2022-07-21 01:58:27,897 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_generic [2022-07-21 01:58:27,897 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_slave [2022-07-21 01:58:27,897 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_slave [2022-07-21 01:58:27,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 01:58:27,898 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 01:58:27,898 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 01:58:28,057 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 01:58:28,059 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 01:58:28,489 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 01:58:28,499 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 01:58:28,500 INFO L299 CfgBuilder]: Removed 38 assume(true) statements. [2022-07-21 01:58:28,503 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:58:28 BoogieIcfgContainer [2022-07-21 01:58:28,503 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 01:58:28,505 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 01:58:28,505 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 01:58:28,508 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 01:58:28,508 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 01:58:27" (1/3) ... [2022-07-21 01:58:28,509 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ac86136 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:58:28, skipping insertion in model container [2022-07-21 01:58:28,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:58:27" (2/3) ... [2022-07-21 01:58:28,510 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ac86136 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:58:28, skipping insertion in model container [2022-07-21 01:58:28,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:58:28" (3/3) ... [2022-07-21 01:58:28,512 INFO L111 eAbstractionObserver]: Analyzing ICFG dll_of_dll-1.i [2022-07-21 01:58:28,526 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 01:58:28,526 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 01:58:28,592 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 01:58:28,601 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@35480e65, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2779b0d [2022-07-21 01:58:28,602 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 01:58:28,617 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) [2022-07-21 01:58:28,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-07-21 01:58:28,625 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 01:58:28,626 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] [2022-07-21 01:58:28,627 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 01:58:28,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 01:58:28,631 INFO L85 PathProgramCache]: Analyzing trace with hash 760908611, now seen corresponding path program 1 times [2022-07-21 01:58:28,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 01:58:28,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354521457] [2022-07-21 01:58:28,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 01:58:28,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 01:58:28,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:58:28,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 01:58:28,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:58:28,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 01:58:28,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:58:28,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 01:58:29,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:58:29,017 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-21 01:58:29,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 01:58:29,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354521457] [2022-07-21 01:58:29,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354521457] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 01:58:29,021 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 01:58:29,021 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 01:58:29,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504613503] [2022-07-21 01:58:29,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 01:58:29,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 01:58:29,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 01:58:29,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 01:58:29,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 01:58:29,070 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) [2022-07-21 01:58:29,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 01:58:29,272 INFO L93 Difference]: Finished difference Result 251 states and 429 transitions. [2022-07-21 01:58:29,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 01:58:29,274 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 [2022-07-21 01:58:29,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 01:58:29,283 INFO L225 Difference]: With dead ends: 251 [2022-07-21 01:58:29,283 INFO L226 Difference]: Without dead ends: 120 [2022-07-21 01:58:29,287 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 [2022-07-21 01:58:29,290 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 [2022-07-21 01:58:29,291 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] [2022-07-21 01:58:29,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2022-07-21 01:58:29,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2022-07-21 01:58:29,329 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) [2022-07-21 01:58:29,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 149 transitions. [2022-07-21 01:58:29,332 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 149 transitions. Word has length 37 [2022-07-21 01:58:29,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 01:58:29,333 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 149 transitions. [2022-07-21 01:58:29,333 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) [2022-07-21 01:58:29,333 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 149 transitions. [2022-07-21 01:58:29,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-07-21 01:58:29,336 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 01:58:29,336 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] [2022-07-21 01:58:29,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 01:58:29,336 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 01:58:29,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 01:58:29,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1675514385, now seen corresponding path program 1 times [2022-07-21 01:58:29,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 01:58:29,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362534265] [2022-07-21 01:58:29,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 01:58:29,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 01:58:29,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:58:29,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 01:58:29,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:58:29,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 01:58:29,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:58:29,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 01:58:29,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:58:29,651 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-21 01:58:29,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 01:58:29,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362534265] [2022-07-21 01:58:29,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362534265] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 01:58:29,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [743018420] [2022-07-21 01:58:29,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 01:58:29,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 01:58:29,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 01:58:29,654 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) [2022-07-21 01:58:29,685 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-21 01:58:29,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:58:29,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-21 01:58:29,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 01:58:30,011 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-21 01:58:30,011 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 01:58:30,235 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-21 01:58:30,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [743018420] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 01:58:30,236 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 01:58:30,236 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5] total 12 [2022-07-21 01:58:30,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389300434] [2022-07-21 01:58:30,237 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 01:58:30,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-21 01:58:30,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 01:58:30,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-21 01:58:30,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-07-21 01:58:30,239 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) [2022-07-21 01:58:30,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 01:58:30,708 INFO L93 Difference]: Finished difference Result 250 states and 324 transitions. [2022-07-21 01:58:30,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 01:58:30,709 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 [2022-07-21 01:58:30,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 01:58:30,711 INFO L225 Difference]: With dead ends: 250 [2022-07-21 01:58:30,711 INFO L226 Difference]: Without dead ends: 133 [2022-07-21 01:58:30,712 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 [2022-07-21 01:58:30,713 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, 0.4s IncrementalHoareTripleChecker+Time [2022-07-21 01:58:30,713 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 882 Invalid, 508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 465 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-21 01:58:30,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2022-07-21 01:58:30,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2022-07-21 01:58:30,727 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) [2022-07-21 01:58:30,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 164 transitions. [2022-07-21 01:58:30,728 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 164 transitions. Word has length 38 [2022-07-21 01:58:30,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 01:58:30,728 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 164 transitions. [2022-07-21 01:58:30,729 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) [2022-07-21 01:58:30,729 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 164 transitions. [2022-07-21 01:58:30,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-07-21 01:58:30,731 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 01:58:30,732 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] [2022-07-21 01:58:30,770 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-21 01:58:30,955 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 [2022-07-21 01:58:30,956 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 01:58:30,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 01:58:30,956 INFO L85 PathProgramCache]: Analyzing trace with hash 800158065, now seen corresponding path program 1 times [2022-07-21 01:58:30,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 01:58:30,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154860076] [2022-07-21 01:58:30,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 01:58:30,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 01:58:31,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:58:31,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 01:58:31,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:58:31,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 01:58:31,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:58:31,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 01:58:31,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:58:31,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-21 01:58:31,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:58:31,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-21 01:58:31,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:58:31,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 01:58:31,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:58:31,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 01:58:31,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:58:31,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-21 01:58:31,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:58:31,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 01:58:31,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:58:31,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-21 01:58:31,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:58:32,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-21 01:58:32,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:58:32,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 01:58:32,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:58:32,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 01:58:32,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:58:32,039 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 27 proven. 23 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-07-21 01:58:32,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 01:58:32,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154860076] [2022-07-21 01:58:32,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154860076] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 01:58:32,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1030826017] [2022-07-21 01:58:32,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 01:58:32,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 01:58:32,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 01:58:32,042 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) [2022-07-21 01:58:32,071 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-21 01:58:32,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:58:32,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 964 conjuncts, 45 conjunts are in the unsatisfiable core [2022-07-21 01:58:32,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 01:58:32,501 INFO L356 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2022-07-21 01:58:32,502 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 [2022-07-21 01:58:32,510 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 [2022-07-21 01:58:32,519 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 [2022-07-21 01:58:32,598 INFO L356 Elim1Store]: treesize reduction 33, result has 2.9 percent of original size [2022-07-21 01:58:32,598 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 82 treesize of output 34 [2022-07-21 01:58:32,601 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 22 treesize of output 16 [2022-07-21 01:58:32,624 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse2 (select (select |c_#memory_$Pointer$.base| |c_dll_insert_master_#in~dll#1.base|) |c_dll_insert_master_#in~dll#1.offset|))) (let ((.cse1 (not (= .cse2 0)))) (or (and (exists ((v_DerPreprocessor_1 (Array Int Int)) (v_DerPreprocessor_2 (Array Int Int))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_dll_insert_master_#in~dll#1.base|) |c_dll_insert_master_#in~dll#1.offset|))) (and (= (select v_DerPreprocessor_2 |c_dll_insert_master_#in~dll#1.offset|) .cse0) (= (select (store (store (store (store |c_#memory_$Pointer$.base| .cse0 v_DerPreprocessor_1) |c_dll_insert_master_#in~dll#1.base| v_DerPreprocessor_2) .cse0 v_DerPreprocessor_1) |c_dll_insert_master_#in~dll#1.base| v_DerPreprocessor_2) .cse0) v_DerPreprocessor_1)))) .cse1) (and .cse1 (not (= |c_dll_insert_master_#in~dll#1.base| .cse2)))))) is different from true [2022-07-21 01:58:32,713 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 [2022-07-21 01:58:32,743 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 33 proven. 5 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2022-07-21 01:58:32,744 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 01:58:33,073 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-21 01:58:33,073 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 [2022-07-21 01:58:33,078 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 [2022-07-21 01:58:33,086 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 [2022-07-21 01:58:33,140 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 [2022-07-21 01:58:33,148 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 [2022-07-21 01:58:33,173 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-21 01:58:33,173 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 [2022-07-21 01:58:33,183 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 [2022-07-21 01:58:33,192 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 [2022-07-21 01:58:33,247 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 [2022-07-21 01:58:33,258 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 [2022-07-21 01:58:33,371 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 32 proven. 2 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-07-21 01:58:33,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1030826017] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 01:58:33,372 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 01:58:33,372 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 16, 15] total 28 [2022-07-21 01:58:33,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826103606] [2022-07-21 01:58:33,373 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 01:58:33,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-07-21 01:58:33,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 01:58:33,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-07-21 01:58:33,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=645, Unknown=1, NotChecked=50, Total=756 [2022-07-21 01:58:33,375 INFO L87 Difference]: Start difference. First operand 133 states and 164 transitions. Second operand has 28 states, 24 states have (on average 2.9166666666666665) internal successors, (70), 24 states have internal predecessors, (70), 11 states have call successors, (22), 4 states have call predecessors, (22), 8 states have return successors, (18), 11 states have call predecessors, (18), 9 states have call successors, (18) [2022-07-21 01:58:35,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 01:58:35,104 INFO L93 Difference]: Finished difference Result 330 states and 410 transitions. [2022-07-21 01:58:35,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-07-21 01:58:35,107 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 24 states have (on average 2.9166666666666665) internal successors, (70), 24 states have internal predecessors, (70), 11 states have call successors, (22), 4 states have call predecessors, (22), 8 states have return successors, (18), 11 states have call predecessors, (18), 9 states have call successors, (18) Word has length 110 [2022-07-21 01:58:35,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 01:58:35,109 INFO L225 Difference]: With dead ends: 330 [2022-07-21 01:58:35,109 INFO L226 Difference]: Without dead ends: 201 [2022-07-21 01:58:35,110 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 239 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=169, Invalid=1814, Unknown=1, NotChecked=86, Total=2070 [2022-07-21 01:58:35,111 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 255 mSDsluCounter, 1733 mSDsCounter, 0 mSdLazyCounter, 1802 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 1864 SdHoareTripleChecker+Invalid, 2057 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1802 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 183 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-21 01:58:35,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [257 Valid, 1864 Invalid, 2057 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1802 Invalid, 0 Unknown, 183 Unchecked, 1.1s Time] [2022-07-21 01:58:35,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2022-07-21 01:58:35,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 166. [2022-07-21 01:58:35,135 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) [2022-07-21 01:58:35,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 204 transitions. [2022-07-21 01:58:35,138 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 204 transitions. Word has length 110 [2022-07-21 01:58:35,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 01:58:35,140 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 204 transitions. [2022-07-21 01:58:35,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 24 states have (on average 2.9166666666666665) internal successors, (70), 24 states have internal predecessors, (70), 11 states have call successors, (22), 4 states have call predecessors, (22), 8 states have return successors, (18), 11 states have call predecessors, (18), 9 states have call successors, (18) [2022-07-21 01:58:35,141 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 204 transitions. [2022-07-21 01:58:35,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-21 01:58:35,147 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 01:58:35,148 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] [2022-07-21 01:58:35,179 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-21 01:58:35,349 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 [2022-07-21 01:58:35,349 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 01:58:35,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 01:58:35,350 INFO L85 PathProgramCache]: Analyzing trace with hash 614553281, now seen corresponding path program 1 times [2022-07-21 01:58:35,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 01:58:35,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316323445] [2022-07-21 01:58:35,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 01:58:35,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 01:58:35,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:58:35,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 01:58:35,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:58:35,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 01:58:35,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:58:35,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 01:58:35,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:58:35,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-21 01:58:35,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:58:35,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-21 01:58:35,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:58:35,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 01:58:35,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:58:35,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 01:58:35,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:58:35,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-21 01:58:35,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:58:35,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 01:58:35,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:58:35,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-21 01:58:36,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:58:36,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-21 01:58:36,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:58:36,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 01:58:36,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:58:36,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 01:58:36,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:58:36,048 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 15 proven. 23 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2022-07-21 01:58:36,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 01:58:36,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316323445] [2022-07-21 01:58:36,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316323445] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 01:58:36,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1204852095] [2022-07-21 01:58:36,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 01:58:36,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 01:58:36,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 01:58:36,051 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) [2022-07-21 01:58:36,080 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-21 01:58:36,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:58:36,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 988 conjuncts, 55 conjunts are in the unsatisfiable core [2022-07-21 01:58:36,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 01:58:36,582 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 [2022-07-21 01:58:36,633 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 [2022-07-21 01:58:36,769 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2858 (Array Int Int)) (|##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base| Int)) (and (< |##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base| |c_#StackHeapBarrier|) (= (select (select (store |c_old(#memory_$Pointer$.base)| |##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base| v_ArrVal_2858) |c_##fun~$Pointer$~TO~VOID_#in~10#1.base|) |c_##fun~$Pointer$~TO~VOID_#in~10#1.offset|) |c_##fun~$Pointer$~TO~VOID_dll_insert_slave_~next~0#1.base|))) is different from true [2022-07-21 01:58:36,782 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2858 (Array Int Int)) (|##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base| Int)) (and (< |##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base| |c_#StackHeapBarrier|) (= (select (select (store |c_old(#memory_$Pointer$.base)| |##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base| v_ArrVal_2858) |c_##fun~$Pointer$~TO~VOID_#in~10#1.base|) |c_##fun~$Pointer$~TO~VOID_#in~10#1.offset|) 0))) is different from true [2022-07-21 01:58:36,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 01:58:36,811 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 80 proven. 3 refuted. 0 times theorem prover too weak. 46 trivial. 5 not checked. [2022-07-21 01:58:36,811 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 01:58:37,733 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base_139| Int) (v_ArrVal_2898 (Array Int Int))) (or (not (< |v_##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base_139| |c_#StackHeapBarrier|)) (not (= (select (select (store |c_#memory_$Pointer$.base| |v_##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base_139| v_ArrVal_2898) |c_dll_create_generic_~#dll~0.base|) |c_dll_create_generic_~#dll~0.offset|) 0)))) is different from false [2022-07-21 01:58:37,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1204852095] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 01:58:37,736 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 01:58:37,736 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 15] total 24 [2022-07-21 01:58:37,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354877711] [2022-07-21 01:58:37,736 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 01:58:37,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-07-21 01:58:37,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 01:58:37,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-07-21 01:58:37,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=414, Unknown=3, NotChecked=126, Total=600 [2022-07-21 01:58:37,740 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) [2022-07-21 01:58:38,002 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$~TO~VOID_#in~10#1.offset|) 0)) (exists ((v_ArrVal_2858 (Array Int Int)) (|##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base| Int)) (and (< |##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base| |c_#StackHeapBarrier|) (= (select (select (store |c_old(#memory_$Pointer$.base)| |##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base| v_ArrVal_2858) |c_##fun~$Pointer$~TO~VOID_#in~10#1.base|) |c_##fun~$Pointer$~TO~VOID_#in~10#1.offset|) 0)))) is different from true [2022-07-21 01:58:38,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 01:58:38,782 INFO L93 Difference]: Finished difference Result 338 states and 426 transitions. [2022-07-21 01:58:38,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-21 01:58:38,786 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 [2022-07-21 01:58:38,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 01:58:38,791 INFO L225 Difference]: With dead ends: 338 [2022-07-21 01:58:38,791 INFO L226 Difference]: Without dead ends: 180 [2022-07-21 01:58:38,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=144, Invalid=1054, Unknown=8, NotChecked=276, Total=1482 [2022-07-21 01:58:38,797 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 84 mSDsluCounter, 1075 mSDsCounter, 0 mSdLazyCounter, 1142 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 1203 SdHoareTripleChecker+Invalid, 1648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 444 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-21 01:58:38,798 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 1203 Invalid, 1648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1142 Invalid, 0 Unknown, 444 Unchecked, 0.6s Time] [2022-07-21 01:58:38,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2022-07-21 01:58:38,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 171. [2022-07-21 01:58:38,818 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) [2022-07-21 01:58:38,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 210 transitions. [2022-07-21 01:58:38,819 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 210 transitions. Word has length 113 [2022-07-21 01:58:38,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 01:58:38,820 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 210 transitions. [2022-07-21 01:58:38,820 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) [2022-07-21 01:58:38,820 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 210 transitions. [2022-07-21 01:58:38,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-21 01:58:38,821 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 01:58:38,821 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] [2022-07-21 01:58:38,847 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-21 01:58:39,039 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 [2022-07-21 01:58:39,040 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 01:58:39,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 01:58:39,040 INFO L85 PathProgramCache]: Analyzing trace with hash 522299907, now seen corresponding path program 1 times [2022-07-21 01:58:39,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 01:58:39,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424942826] [2022-07-21 01:58:39,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 01:58:39,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 01:58:39,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:58:39,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 01:58:39,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:58:39,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 01:58:39,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:58:39,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 01:58:39,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:58:40,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-21 01:58:40,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:58:40,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-21 01:58:40,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:58:40,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 01:58:40,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:58:40,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 01:58:40,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:58:40,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-21 01:58:40,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:58:40,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 01:58:40,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:58:40,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-21 01:58:40,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:58:43,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-21 01:58:44,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat