./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 e19ca921 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-dev-e19ca92 [2021-12-22 10:25:26,850 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 10:25:26,868 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 10:25:26,899 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 10:25:26,906 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 10:25:26,907 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 10:25:26,909 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 10:25:26,910 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 10:25:26,911 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 10:25:26,912 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 10:25:26,913 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 10:25:26,914 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 10:25:26,914 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 10:25:26,915 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 10:25:26,916 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 10:25:26,917 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 10:25:26,917 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 10:25:26,918 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 10:25:26,919 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 10:25:26,921 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 10:25:26,922 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 10:25:26,923 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 10:25:26,924 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 10:25:26,925 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 10:25:26,929 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 10:25:26,933 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 10:25:26,933 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 10:25:26,934 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 10:25:26,934 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 10:25:26,935 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 10:25:26,936 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 10:25:26,937 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 10:25:26,938 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 10:25:26,938 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 10:25:26,940 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 10:25:26,940 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 10:25:26,941 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 10:25:26,941 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 10:25:26,942 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 10:25:26,942 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 10:25:26,944 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 10:25:26,945 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-22 10:25:26,970 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 10:25:26,972 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 10:25:26,973 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 10:25:26,973 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 10:25:26,974 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 10:25:26,974 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 10:25:26,974 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 10:25:26,975 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 10:25:26,975 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 10:25:26,975 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 10:25:26,976 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 10:25:26,976 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 10:25:26,976 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 10:25:26,976 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 10:25:26,977 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 10:25:26,977 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 10:25:26,977 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 10:25:26,977 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 10:25:26,977 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 10:25:26,977 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 10:25:26,978 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 10:25:26,978 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 10:25:26,978 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 10:25:26,978 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 10:25:26,978 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 10:25:26,978 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 10:25:26,979 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 10:25:26,979 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 10:25:26,979 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 10:25:26,979 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 10:25:26,979 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 10:25:26,979 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 10:25:26,980 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 10:25:26,980 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 10:25:26,980 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0e14b8baad7c8f50637b16b3adcb891ef363d7563e7c4e0e74695e7b8e3d1787 [2021-12-22 10:25:27,221 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 10:25:27,242 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 10:25:27,244 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 10:25:27,245 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 10:25:27,246 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 10:25:27,247 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/heap-manipulation/dll_of_dll-1.i [2021-12-22 10:25:27,292 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ef3078e9/6dbc672b22074250a3f41ccbbac281c1/FLAG6dfb73986 [2021-12-22 10:25:27,802 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 10:25:27,803 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/heap-manipulation/dll_of_dll-1.i [2021-12-22 10:25:27,820 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ef3078e9/6dbc672b22074250a3f41ccbbac281c1/FLAG6dfb73986 [2021-12-22 10:25:28,280 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ef3078e9/6dbc672b22074250a3f41ccbbac281c1 [2021-12-22 10:25:28,283 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 10:25:28,284 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 10:25:28,286 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 10:25:28,287 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 10:25:28,297 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 10:25:28,298 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 10:25:28" (1/1) ... [2021-12-22 10:25:28,299 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68f89e5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:25:28, skipping insertion in model container [2021-12-22 10:25:28,299 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 10:25:28" (1/1) ... [2021-12-22 10:25:28,304 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 10:25:28,331 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 10:25:28,575 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] [2021-12-22 10:25:28,604 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 10:25:28,610 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 10:25:28,649 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] [2021-12-22 10:25:28,665 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 10:25:28,691 INFO L208 MainTranslator]: Completed translation [2021-12-22 10:25:28,691 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:25:28 WrapperNode [2021-12-22 10:25:28,692 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 10:25:28,693 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 10:25:28,694 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 10:25:28,694 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 10:25:28,699 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:25:28" (1/1) ... [2021-12-22 10:25:28,712 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:25:28" (1/1) ... [2021-12-22 10:25:28,736 INFO L137 Inliner]: procedures = 140, calls = 94, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 228 [2021-12-22 10:25:28,737 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 10:25:28,738 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 10:25:28,738 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 10:25:28,738 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 10:25:28,745 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:25:28" (1/1) ... [2021-12-22 10:25:28,745 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:25:28" (1/1) ... [2021-12-22 10:25:28,750 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:25:28" (1/1) ... [2021-12-22 10:25:28,750 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:25:28" (1/1) ... [2021-12-22 10:25:28,764 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:25:28" (1/1) ... [2021-12-22 10:25:28,773 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:25:28" (1/1) ... [2021-12-22 10:25:28,775 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:25:28" (1/1) ... [2021-12-22 10:25:28,779 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 10:25:28,787 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 10:25:28,787 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 10:25:28,787 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 10:25:28,788 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:25:28" (1/1) ... [2021-12-22 10:25:28,793 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 10:25:28,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 10:25:28,816 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-22 10:25:28,821 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-22 10:25:28,846 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2021-12-22 10:25:28,847 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2021-12-22 10:25:28,847 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_base [2021-12-22 10:25:28,848 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_base [2021-12-22 10:25:28,848 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-22 10:25:28,848 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 10:25:28,848 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_master [2021-12-22 10:25:28,848 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_master [2021-12-22 10:25:28,848 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-22 10:25:28,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-22 10:25:28,852 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-12-22 10:25:28,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-12-22 10:25:28,852 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-22 10:25:28,852 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-22 10:25:28,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-22 10:25:28,853 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_generic [2021-12-22 10:25:28,853 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_generic [2021-12-22 10:25:28,853 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_slave [2021-12-22 10:25:28,853 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_slave [2021-12-22 10:25:28,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 10:25:28,854 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 10:25:28,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 10:25:28,959 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 10:25:28,960 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 10:25:29,292 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 10:25:29,298 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 10:25:29,298 INFO L299 CfgBuilder]: Removed 38 assume(true) statements. [2021-12-22 10:25:29,300 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 10:25:29 BoogieIcfgContainer [2021-12-22 10:25:29,300 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 10:25:29,302 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 10:25:29,302 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 10:25:29,304 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 10:25:29,304 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 10:25:28" (1/3) ... [2021-12-22 10:25:29,305 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b2bb4e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 10:25:29, skipping insertion in model container [2021-12-22 10:25:29,305 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:25:28" (2/3) ... [2021-12-22 10:25:29,305 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b2bb4e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 10:25:29, skipping insertion in model container [2021-12-22 10:25:29,305 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 10:25:29" (3/3) ... [2021-12-22 10:25:29,306 INFO L111 eAbstractionObserver]: Analyzing ICFG dll_of_dll-1.i [2021-12-22 10:25:29,309 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 10:25:29,310 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-22 10:25:29,361 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 10:25:29,373 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-22 10:25:29,373 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-22 10:25:29,403 INFO L276 IsEmpty]: Start isEmpty. Operand has 128 states, 96 states have (on average 1.7083333333333333) internal successors, (164), 116 states have internal predecessors, (164), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2021-12-22 10:25:29,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-12-22 10:25:29,408 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 10:25:29,409 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 10:25:29,409 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 10:25:29,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 10:25:29,413 INFO L85 PathProgramCache]: Analyzing trace with hash 760908611, now seen corresponding path program 1 times [2021-12-22 10:25:29,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 10:25:29,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310685802] [2021-12-22 10:25:29,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 10:25:29,421 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 10:25:29,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 10:25:29,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 10:25:29,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 10:25:29,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 10:25:29,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 10:25:29,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 10:25:29,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 10:25:29,723 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-22 10:25:29,724 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 10:25:29,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310685802] [2021-12-22 10:25:29,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310685802] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 10:25:29,725 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 10:25:29,725 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 10:25:29,727 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138432356] [2021-12-22 10:25:29,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 10:25:29,731 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 10:25:29,731 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 10:25:29,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 10:25:29,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 10:25:29,764 INFO L87 Difference]: Start difference. First operand has 128 states, 96 states have (on average 1.7083333333333333) internal successors, (164), 116 states have internal predecessors, (164), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-22 10:25:29,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 10:25:29,892 INFO L93 Difference]: Finished difference Result 251 states and 429 transitions. [2021-12-22 10:25:29,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 10:25:29,894 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 37 [2021-12-22 10:25:29,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 10:25:29,902 INFO L225 Difference]: With dead ends: 251 [2021-12-22 10:25:29,902 INFO L226 Difference]: Without dead ends: 120 [2021-12-22 10:25:29,906 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 10:25:29,909 INFO L933 BasicCegarLoop]: 146 mSDtfsCounter, 32 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 10:25:29,910 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 210 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 10:25:29,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-12-22 10:25:29,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2021-12-22 10:25:29,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 90 states have (on average 1.2777777777777777) internal successors, (115), 108 states have internal predecessors, (115), 24 states have call successors, (24), 6 states have call predecessors, (24), 5 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2021-12-22 10:25:29,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 149 transitions. [2021-12-22 10:25:29,971 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 149 transitions. Word has length 37 [2021-12-22 10:25:29,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 10:25:29,971 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 149 transitions. [2021-12-22 10:25:29,972 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-22 10:25:29,972 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 149 transitions. [2021-12-22 10:25:29,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-12-22 10:25:29,973 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 10:25:29,974 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 10:25:29,974 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 10:25:29,974 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 10:25:29,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 10:25:29,975 INFO L85 PathProgramCache]: Analyzing trace with hash 1675514385, now seen corresponding path program 1 times [2021-12-22 10:25:29,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 10:25:29,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110794389] [2021-12-22 10:25:29,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 10:25:29,976 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 10:25:30,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 10:25:30,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 10:25:30,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 10:25:30,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 10:25:30,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 10:25:30,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 10:25:30,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 10:25:30,407 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-22 10:25:30,408 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 10:25:30,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110794389] [2021-12-22 10:25:30,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110794389] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 10:25:30,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [202037065] [2021-12-22 10:25:30,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 10:25:30,412 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 10:25:30,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 10:25:30,415 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 10:25:30,418 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-22 10:25:30,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 10:25:30,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-22 10:25:30,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 10:25:30,868 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-22 10:25:30,869 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 10:25:31,148 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-22 10:25:31,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [202037065] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 10:25:31,149 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 10:25:31,149 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5] total 12 [2021-12-22 10:25:31,150 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441203936] [2021-12-22 10:25:31,150 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 10:25:31,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-22 10:25:31,151 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 10:25:31,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-22 10:25:31,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2021-12-22 10:25:31,152 INFO L87 Difference]: Start difference. First operand 120 states and 149 transitions. Second operand has 12 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 6 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2021-12-22 10:25:31,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 10:25:31,515 INFO L93 Difference]: Finished difference Result 250 states and 324 transitions. [2021-12-22 10:25:31,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-22 10:25:31,516 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 6 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) Word has length 38 [2021-12-22 10:25:31,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 10:25:31,517 INFO L225 Difference]: With dead ends: 250 [2021-12-22 10:25:31,518 INFO L226 Difference]: Without dead ends: 133 [2021-12-22 10:25:31,519 INFO L932 BasicCegarLoop]: 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 [2021-12-22 10:25:31,520 INFO L933 BasicCegarLoop]: 138 mSDtfsCounter, 55 mSDsluCounter, 832 mSDsCounter, 0 mSdLazyCounter, 377 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 970 SdHoareTripleChecker+Invalid, 420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-22 10:25:31,520 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 970 Invalid, 420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 377 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-22 10:25:31,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2021-12-22 10:25:31,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2021-12-22 10:25:31,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 98 states have (on average 1.2653061224489797) internal successors, (124), 116 states have internal predecessors, (124), 27 states have call successors, (27), 8 states have call predecessors, (27), 7 states have return successors, (13), 11 states have call predecessors, (13), 13 states have call successors, (13) [2021-12-22 10:25:31,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 164 transitions. [2021-12-22 10:25:31,534 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 164 transitions. Word has length 38 [2021-12-22 10:25:31,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 10:25:31,535 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 164 transitions. [2021-12-22 10:25:31,535 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 6 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2021-12-22 10:25:31,535 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 164 transitions. [2021-12-22 10:25:31,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-12-22 10:25:31,539 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 10:25:31,540 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 10:25:31,562 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-22 10:25:31,753 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 10:25:31,754 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 10:25:31,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 10:25:31,754 INFO L85 PathProgramCache]: Analyzing trace with hash 800158065, now seen corresponding path program 1 times [2021-12-22 10:25:31,755 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 10:25:31,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297156726] [2021-12-22 10:25:31,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 10:25:31,755 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 10:25:31,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 10:25:31,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 10:25:31,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 10:25:32,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 10:25:32,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 10:25:32,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 10:25:32,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 10:25:32,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-22 10:25:32,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 10:25:32,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-22 10:25:32,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 10:25:32,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 10:25:32,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 10:25:32,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 10:25:32,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 10:25:32,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-22 10:25:32,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 10:25:32,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 10:25:32,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 10:25:32,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-22 10:25:32,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 10:25:32,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-22 10:25:32,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 10:25:32,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 10:25:32,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 10:25:32,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 10:25:32,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 10:25:32,659 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 27 proven. 23 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-12-22 10:25:32,659 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 10:25:32,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297156726] [2021-12-22 10:25:32,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297156726] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 10:25:32,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [942412934] [2021-12-22 10:25:32,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 10:25:32,662 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 10:25:32,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 10:25:32,664 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 10:25:32,693 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-22 10:25:32,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 10:25:32,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 964 conjuncts, 45 conjunts are in the unsatisfiable core [2021-12-22 10:25:32,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 10:25:33,182 INFO L353 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2021-12-22 10:25:33,183 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 51 [2021-12-22 10:25:33,188 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-12-22 10:25:33,196 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2021-12-22 10:25:33,231 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-22 10:25:33,264 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-22 10:25:33,264 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 34 [2021-12-22 10:25:33,270 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-12-22 10:25:33,334 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2021-12-22 10:25:33,383 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 33 proven. 5 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2021-12-22 10:25:33,384 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 10:25:33,762 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-22 10:25:33,763 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 104 treesize of output 107 [2021-12-22 10:25:33,769 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 116 [2021-12-22 10:25:33,777 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 116 treesize of output 114 [2021-12-22 10:25:33,830 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2021-12-22 10:25:33,839 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2021-12-22 10:25:33,862 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-22 10:25:33,862 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 218 treesize of output 215 [2021-12-22 10:25:33,867 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 250 treesize of output 242 [2021-12-22 10:25:33,873 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 242 treesize of output 238 [2021-12-22 10:25:33,933 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2021-12-22 10:25:33,945 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2021-12-22 10:25:34,175 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 32 proven. 2 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-12-22 10:25:34,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [942412934] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 10:25:34,175 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 10:25:34,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 16, 15] total 27 [2021-12-22 10:25:34,176 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266853389] [2021-12-22 10:25:34,176 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 10:25:34,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-12-22 10:25:34,177 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 10:25:34,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-12-22 10:25:34,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=644, Unknown=0, NotChecked=0, Total=702 [2021-12-22 10:25:34,178 INFO L87 Difference]: Start difference. First operand 133 states and 164 transitions. Second operand has 27 states, 23 states have (on average 2.9565217391304346) internal successors, (68), 23 states have internal predecessors, (68), 11 states have call successors, (22), 4 states have call predecessors, (22), 7 states have return successors, (17), 11 states have call predecessors, (17), 9 states have call successors, (17) [2021-12-22 10:25:35,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 10:25:35,574 INFO L93 Difference]: Finished difference Result 330 states and 410 transitions. [2021-12-22 10:25:35,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-12-22 10:25:35,575 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 23 states have (on average 2.9565217391304346) internal successors, (68), 23 states have internal predecessors, (68), 11 states have call successors, (22), 4 states have call predecessors, (22), 7 states have return successors, (17), 11 states have call predecessors, (17), 9 states have call successors, (17) Word has length 110 [2021-12-22 10:25:35,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 10:25:35,577 INFO L225 Difference]: With dead ends: 330 [2021-12-22 10:25:35,577 INFO L226 Difference]: Without dead ends: 201 [2021-12-22 10:25:35,578 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=175, Invalid=1895, Unknown=0, NotChecked=0, Total=2070 [2021-12-22 10:25:35,579 INFO L933 BasicCegarLoop]: 131 mSDtfsCounter, 256 mSDsluCounter, 1921 mSDsCounter, 0 mSdLazyCounter, 1651 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 2052 SdHoareTripleChecker+Invalid, 1728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-22 10:25:35,579 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [258 Valid, 2052 Invalid, 1728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1651 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-22 10:25:35,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2021-12-22 10:25:35,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 166. [2021-12-22 10:25:35,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 126 states have (on average 1.253968253968254) internal successors, (158), 144 states have internal predecessors, (158), 29 states have call successors, (29), 10 states have call predecessors, (29), 10 states have return successors, (17), 13 states have call predecessors, (17), 15 states have call successors, (17) [2021-12-22 10:25:35,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 204 transitions. [2021-12-22 10:25:35,593 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 204 transitions. Word has length 110 [2021-12-22 10:25:35,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 10:25:35,594 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 204 transitions. [2021-12-22 10:25:35,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 23 states have (on average 2.9565217391304346) internal successors, (68), 23 states have internal predecessors, (68), 11 states have call successors, (22), 4 states have call predecessors, (22), 7 states have return successors, (17), 11 states have call predecessors, (17), 9 states have call successors, (17) [2021-12-22 10:25:35,594 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 204 transitions. [2021-12-22 10:25:35,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-12-22 10:25:35,595 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 10:25:35,596 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 10:25:35,624 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-22 10:25:35,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-12-22 10:25:35,816 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 10:25:35,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 10:25:35,816 INFO L85 PathProgramCache]: Analyzing trace with hash 614553281, now seen corresponding path program 1 times [2021-12-22 10:25:35,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 10:25:35,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499850013] [2021-12-22 10:25:35,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 10:25:35,817 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 10:25:35,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 10:25:35,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 10:25:36,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 10:25:36,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 10:25:36,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 10:25:36,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 10:25:36,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 10:25:36,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-22 10:25:36,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 10:25:36,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-22 10:25:36,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 10:25:36,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 10:25:36,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 10:25:36,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 10:25:36,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 10:25:36,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-22 10:25:36,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 10:25:36,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 10:25:36,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 10:25:36,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-22 10:25:36,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 10:25:36,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-22 10:25:36,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 10:25:36,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 10:25:36,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 10:25:36,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 10:25:36,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 10:25:36,497 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 15 proven. 23 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2021-12-22 10:25:36,497 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 10:25:36,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499850013] [2021-12-22 10:25:36,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499850013] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 10:25:36,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [36691440] [2021-12-22 10:25:36,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 10:25:36,498 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 10:25:36,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 10:25:36,499 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 10:25:36,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-22 10:25:36,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 10:25:36,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 988 conjuncts, 55 conjunts are in the unsatisfiable core [2021-12-22 10:25:36,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 10:25:37,095 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-22 10:25:37,155 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2021-12-22 10:25:37,314 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2858 (Array Int Int)) (|##fun~$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 [2021-12-22 10:25:37,333 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2858 (Array Int Int)) (|##fun~$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 [2021-12-22 10:25:37,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 10:25:37,406 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 80 proven. 3 refuted. 0 times theorem prover too weak. 46 trivial. 5 not checked. [2021-12-22 10:25:37,406 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 10:25:38,452 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base_139| Int) (v_ArrVal_2898 (Array Int Int))) (or (not (< |v_##fun~$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 [2021-12-22 10:25:38,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [36691440] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 10:25:38,454 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-22 10:25:38,454 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 15] total 24 [2021-12-22 10:25:38,455 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639050774] [2021-12-22 10:25:38,455 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-22 10:25:38,455 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-12-22 10:25:38,456 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 10:25:38,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-12-22 10:25:38,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=414, Unknown=3, NotChecked=126, Total=600 [2021-12-22 10:25:38,457 INFO L87 Difference]: Start difference. First operand 166 states and 204 transitions. Second operand has 24 states, 21 states have (on average 3.619047619047619) internal successors, (76), 21 states have internal predecessors, (76), 8 states have call successors, (20), 4 states have call predecessors, (20), 6 states have return successors, (17), 5 states have call predecessors, (17), 8 states have call successors, (17) [2021-12-22 10:25:38,716 WARN L860 $PredicateComparison]: unable to prove that (and (not (= (select (select |c_#memory_$Pointer$.base| |c_##fun~$Pointer$~TO~VOID_#in~10#1.base|) |c_##fun~$Pointer$~TO~VOID_#in~10#1.offset|) 0)) (exists ((v_ArrVal_2858 (Array Int Int)) (|##fun~$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 [2021-12-22 10:25:39,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 10:25:39,448 INFO L93 Difference]: Finished difference Result 338 states and 426 transitions. [2021-12-22 10:25:39,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-22 10:25:39,449 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 21 states have (on average 3.619047619047619) internal successors, (76), 21 states have internal predecessors, (76), 8 states have call successors, (20), 4 states have call predecessors, (20), 6 states have return successors, (17), 5 states have call predecessors, (17), 8 states have call successors, (17) Word has length 113 [2021-12-22 10:25:39,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 10:25:39,451 INFO L225 Difference]: With dead ends: 338 [2021-12-22 10:25:39,451 INFO L226 Difference]: Without dead ends: 180 [2021-12-22 10:25:39,452 INFO L932 BasicCegarLoop]: 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 [2021-12-22 10:25:39,453 INFO L933 BasicCegarLoop]: 126 mSDtfsCounter, 54 mSDsluCounter, 1252 mSDsCounter, 0 mSdLazyCounter, 1166 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 1378 SdHoareTripleChecker+Invalid, 1649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 440 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-22 10:25:39,453 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 1378 Invalid, 1649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1166 Invalid, 0 Unknown, 440 Unchecked, 0.6s Time] [2021-12-22 10:25:39,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2021-12-22 10:25:39,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 171. [2021-12-22 10:25:39,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 129 states have (on average 1.248062015503876) internal successors, (161), 148 states have internal predecessors, (161), 30 states have call successors, (30), 10 states have call predecessors, (30), 11 states have return successors, (19), 14 states have call predecessors, (19), 16 states have call successors, (19) [2021-12-22 10:25:39,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 210 transitions. [2021-12-22 10:25:39,466 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 210 transitions. Word has length 113 [2021-12-22 10:25:39,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 10:25:39,467 INFO L470 AbstractCegarLoop]: Abstraction has 171 states and 210 transitions. [2021-12-22 10:25:39,467 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 21 states have (on average 3.619047619047619) internal successors, (76), 21 states have internal predecessors, (76), 8 states have call successors, (20), 4 states have call predecessors, (20), 6 states have return successors, (17), 5 states have call predecessors, (17), 8 states have call successors, (17) [2021-12-22 10:25:39,467 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 210 transitions. [2021-12-22 10:25:39,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-12-22 10:25:39,469 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 10:25:39,469 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 10:25:39,494 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-22 10:25:39,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 10:25:39,692 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 10:25:39,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 10:25:39,692 INFO L85 PathProgramCache]: Analyzing trace with hash 522299907, now seen corresponding path program 1 times [2021-12-22 10:25:39,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 10:25:39,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183125021] [2021-12-22 10:25:39,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 10:25:39,692 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 10:25:39,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 10:25:40,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 10:25:40,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 10:25:40,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 10:25:40,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 10:25:40,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 10:25:40,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 10:25:40,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-22 10:25:40,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 10:25:40,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-22 10:25:40,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 10:25:40,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 10:25:40,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 10:25:40,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 10:25:40,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 10:25:40,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-22 10:25:40,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 10:25:40,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 10:25:40,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 10:25:41,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-22 10:25:41,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 10:25:43,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-22 10:25:43,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat