./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../sv-benchmarks/c/heap-manipulation/dll_of_dll-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version ff03de63 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/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/heap-manipulation/dll_of_dll-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-MemCleanup-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 valid-memcleanup) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0eca46c14885d62179341dcc13b398752af03e020a80dcf533f4c9afc7372707 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 17:56:10,159 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 17:56:10,164 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 17:56:10,213 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 17:56:10,213 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 17:56:10,214 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 17:56:10,216 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 17:56:10,222 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 17:56:10,224 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 17:56:10,225 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 17:56:10,226 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 17:56:10,227 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 17:56:10,229 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 17:56:10,231 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 17:56:10,233 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 17:56:10,235 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 17:56:10,236 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 17:56:10,242 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 17:56:10,243 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 17:56:10,245 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 17:56:10,250 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 17:56:10,253 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 17:56:10,254 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 17:56:10,255 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 17:56:10,257 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 17:56:10,263 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 17:56:10,263 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 17:56:10,264 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 17:56:10,265 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 17:56:10,266 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 17:56:10,266 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 17:56:10,266 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 17:56:10,267 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 17:56:10,268 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 17:56:10,269 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 17:56:10,269 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 17:56:10,269 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 17:56:10,270 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 17:56:10,270 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 17:56:10,271 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 17:56:10,271 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 17:56:10,272 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-MemCleanup-32bit-Automizer_Default.epf [2021-12-21 17:56:10,292 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 17:56:10,293 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 17:56:10,293 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 17:56:10,294 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 17:56:10,295 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 17:56:10,295 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 17:56:10,295 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 17:56:10,296 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 17:56:10,296 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 17:56:10,296 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 17:56:10,297 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 17:56:10,297 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-21 17:56:10,297 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 17:56:10,297 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 17:56:10,297 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 17:56:10,297 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-21 17:56:10,298 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-21 17:56:10,298 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 17:56:10,298 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-21 17:56:10,298 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 17:56:10,298 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 17:56:10,298 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 17:56:10,298 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 17:56:10,298 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 17:56:10,298 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 17:56:10,299 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 17:56:10,299 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 17:56:10,299 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 17:56:10,299 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 17:56:10,299 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 17:56:10,299 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0eca46c14885d62179341dcc13b398752af03e020a80dcf533f4c9afc7372707 [2021-12-21 17:56:10,545 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 17:56:10,565 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 17:56:10,568 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 17:56:10,569 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 17:56:10,570 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 17:56:10,571 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/heap-manipulation/dll_of_dll-2.i [2021-12-21 17:56:10,639 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7837e052d/8fbccaedadcc4175994018ee32be54ac/FLAG08476290b [2021-12-21 17:56:11,138 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 17:56:11,139 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/heap-manipulation/dll_of_dll-2.i [2021-12-21 17:56:11,160 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7837e052d/8fbccaedadcc4175994018ee32be54ac/FLAG08476290b [2021-12-21 17:56:11,646 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7837e052d/8fbccaedadcc4175994018ee32be54ac [2021-12-21 17:56:11,648 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 17:56:11,649 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 17:56:11,650 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 17:56:11,651 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 17:56:11,653 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 17:56:11,654 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 05:56:11" (1/1) ... [2021-12-21 17:56:11,655 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1431b4da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:56:11, skipping insertion in model container [2021-12-21 17:56:11,655 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 05:56:11" (1/1) ... [2021-12-21 17:56:11,661 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 17:56:11,707 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 17:56:11,927 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/heap-manipulation/dll_of_dll-2.i[22634,22647] [2021-12-21 17:56:11,974 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 17:56:11,985 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 17:56:12,020 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/heap-manipulation/dll_of_dll-2.i[22634,22647] [2021-12-21 17:56:12,042 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 17:56:12,068 INFO L208 MainTranslator]: Completed translation [2021-12-21 17:56:12,069 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:56:12 WrapperNode [2021-12-21 17:56:12,070 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 17:56:12,071 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 17:56:12,071 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 17:56:12,072 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 17:56:12,080 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:56:12" (1/1) ... [2021-12-21 17:56:12,096 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:56:12" (1/1) ... [2021-12-21 17:56:12,124 INFO L137 Inliner]: procedures = 140, calls = 94, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 234 [2021-12-21 17:56:12,125 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 17:56:12,126 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 17:56:12,126 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 17:56:12,126 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 17:56:12,133 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:56:12" (1/1) ... [2021-12-21 17:56:12,133 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:56:12" (1/1) ... [2021-12-21 17:56:12,139 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:56:12" (1/1) ... [2021-12-21 17:56:12,139 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:56:12" (1/1) ... [2021-12-21 17:56:12,151 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:56:12" (1/1) ... [2021-12-21 17:56:12,159 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:56:12" (1/1) ... [2021-12-21 17:56:12,162 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:56:12" (1/1) ... [2021-12-21 17:56:12,167 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 17:56:12,168 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 17:56:12,168 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 17:56:12,169 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 17:56:12,169 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:56:12" (1/1) ... [2021-12-21 17:56:12,176 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 17:56:12,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 17:56:12,209 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) [2021-12-21 17:56:12,211 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 [2021-12-21 17:56:12,236 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2021-12-21 17:56:12,236 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2021-12-21 17:56:12,237 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_base [2021-12-21 17:56:12,237 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_base [2021-12-21 17:56:12,237 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-21 17:56:12,237 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 17:56:12,237 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_master [2021-12-21 17:56:12,237 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_master [2021-12-21 17:56:12,237 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-21 17:56:12,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-21 17:56:12,238 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-12-21 17:56:12,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-12-21 17:56:12,238 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-21 17:56:12,238 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-21 17:56:12,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-21 17:56:12,238 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_generic [2021-12-21 17:56:12,239 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_generic [2021-12-21 17:56:12,239 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_slave [2021-12-21 17:56:12,239 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_slave [2021-12-21 17:56:12,239 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 17:56:12,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 17:56:12,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 17:56:12,355 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 17:56:12,356 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 17:56:12,856 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 17:56:12,871 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 17:56:12,871 INFO L299 CfgBuilder]: Removed 38 assume(true) statements. [2021-12-21 17:56:12,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 05:56:12 BoogieIcfgContainer [2021-12-21 17:56:12,874 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 17:56:12,875 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 17:56:12,875 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 17:56:12,878 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 17:56:12,879 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 05:56:11" (1/3) ... [2021-12-21 17:56:12,879 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a98a4c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 05:56:12, skipping insertion in model container [2021-12-21 17:56:12,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:56:12" (2/3) ... [2021-12-21 17:56:12,880 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a98a4c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 05:56:12, skipping insertion in model container [2021-12-21 17:56:12,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 05:56:12" (3/3) ... [2021-12-21 17:56:12,881 INFO L111 eAbstractionObserver]: Analyzing ICFG dll_of_dll-2.i [2021-12-21 17:56:12,885 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 17:56:12,886 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 98 error locations. [2021-12-21 17:56:12,935 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 17:56:12,942 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=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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 [2021-12-21 17:56:12,943 INFO L340 AbstractCegarLoop]: Starting to check reachability of 98 error locations. [2021-12-21 17:56:12,970 INFO L276 IsEmpty]: Start isEmpty. Operand has 271 states, 142 states have (on average 2.1619718309859155) internal successors, (307), 259 states have internal predecessors, (307), 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) [2021-12-21 17:56:12,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-21 17:56:12,988 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 17:56:12,989 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 17:56:12,990 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ##fun~$Pointer$~TO~VOIDErr0REQUIRES_VIOLATION === [dll_insert_masterErr0REQUIRES_VIOLATION, dll_insert_masterErr1REQUIRES_VIOLATION, dll_insert_masterErr2REQUIRES_VIOLATION (and 95 more)] === [2021-12-21 17:56:13,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 17:56:13,005 INFO L85 PathProgramCache]: Analyzing trace with hash -853608627, now seen corresponding path program 1 times [2021-12-21 17:56:13,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 17:56:13,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825460161] [2021-12-21 17:56:13,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 17:56:13,018 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 17:56:13,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:56:13,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 17:56:13,203 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 17:56:13,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825460161] [2021-12-21 17:56:13,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825460161] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 17:56:13,205 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 17:56:13,205 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-21 17:56:13,207 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042973137] [2021-12-21 17:56:13,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 17:56:13,211 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-21 17:56:13,211 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 17:56:13,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-21 17:56:13,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-21 17:56:13,243 INFO L87 Difference]: Start difference. First operand has 271 states, 142 states have (on average 2.1619718309859155) internal successors, (307), 259 states have internal predecessors, (307), 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 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 17:56:13,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 17:56:13,297 INFO L93 Difference]: Finished difference Result 269 states and 299 transitions. [2021-12-21 17:56:13,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-21 17:56:13,299 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-12-21 17:56:13,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 17:56:13,314 INFO L225 Difference]: With dead ends: 269 [2021-12-21 17:56:13,314 INFO L226 Difference]: Without dead ends: 267 [2021-12-21 17:56:13,316 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-21 17:56:13,320 INFO L933 BasicCegarLoop]: 299 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 17:56:13,321 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 17:56:13,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2021-12-21 17:56:13,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 267. [2021-12-21 17:56:13,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 140 states have (on average 1.8785714285714286) internal successors, (263), 255 states have internal predecessors, (263), 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) [2021-12-21 17:56:13,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 297 transitions. [2021-12-21 17:56:13,396 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 297 transitions. Word has length 9 [2021-12-21 17:56:13,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 17:56:13,397 INFO L470 AbstractCegarLoop]: Abstraction has 267 states and 297 transitions. [2021-12-21 17:56:13,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 17:56:13,398 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 297 transitions. [2021-12-21 17:56:13,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-21 17:56:13,398 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 17:56:13,398 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 17:56:13,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 17:56:13,399 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ##fun~$Pointer$~TO~VOIDErr0REQUIRES_VIOLATION === [dll_insert_masterErr0REQUIRES_VIOLATION, dll_insert_masterErr1REQUIRES_VIOLATION, dll_insert_masterErr2REQUIRES_VIOLATION (and 95 more)] === [2021-12-21 17:56:13,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 17:56:13,400 INFO L85 PathProgramCache]: Analyzing trace with hash -853608565, now seen corresponding path program 1 times [2021-12-21 17:56:13,401 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 17:56:13,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575540266] [2021-12-21 17:56:13,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 17:56:13,401 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 17:56:13,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:56:13,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 17:56:13,465 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 17:56:13,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575540266] [2021-12-21 17:56:13,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575540266] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 17:56:13,466 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 17:56:13,467 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-21 17:56:13,467 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933562535] [2021-12-21 17:56:13,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 17:56:13,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 17:56:13,474 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 17:56:13,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 17:56:13,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 17:56:13,476 INFO L87 Difference]: Start difference. First operand 267 states and 297 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 17:56:13,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 17:56:13,651 INFO L93 Difference]: Finished difference Result 267 states and 299 transitions. [2021-12-21 17:56:13,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 17:56:13,652 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-12-21 17:56:13,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 17:56:13,653 INFO L225 Difference]: With dead ends: 267 [2021-12-21 17:56:13,654 INFO L226 Difference]: Without dead ends: 267 [2021-12-21 17:56:13,659 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 17:56:13,663 INFO L933 BasicCegarLoop]: 282 mSDtfsCounter, 23 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 463 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 17:56:13,664 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 463 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 17:56:13,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2021-12-21 17:56:13,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 265. [2021-12-21 17:56:13,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 140 states have (on average 1.8642857142857143) internal successors, (261), 253 states have internal predecessors, (261), 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) [2021-12-21 17:56:13,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 295 transitions. [2021-12-21 17:56:13,700 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 295 transitions. Word has length 9 [2021-12-21 17:56:13,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 17:56:13,700 INFO L470 AbstractCegarLoop]: Abstraction has 265 states and 295 transitions. [2021-12-21 17:56:13,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 17:56:13,700 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 295 transitions. [2021-12-21 17:56:13,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-21 17:56:13,701 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 17:56:13,701 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 17:56:13,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-21 17:56:13,701 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ##fun~$Pointer$~TO~VOIDErr1REQUIRES_VIOLATION === [dll_insert_masterErr0REQUIRES_VIOLATION, dll_insert_masterErr1REQUIRES_VIOLATION, dll_insert_masterErr2REQUIRES_VIOLATION (and 95 more)] === [2021-12-21 17:56:13,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 17:56:13,701 INFO L85 PathProgramCache]: Analyzing trace with hash -853608564, now seen corresponding path program 1 times [2021-12-21 17:56:13,702 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 17:56:13,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154286893] [2021-12-21 17:56:13,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 17:56:13,702 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 17:56:13,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:56:13,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 17:56:13,855 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 17:56:13,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154286893] [2021-12-21 17:56:13,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154286893] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 17:56:13,857 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 17:56:13,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 17:56:13,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625443662] [2021-12-21 17:56:13,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 17:56:13,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 17:56:13,858 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 17:56:13,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 17:56:13,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 17:56:13,859 INFO L87 Difference]: Start difference. First operand 265 states and 295 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 17:56:13,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 17:56:13,933 INFO L93 Difference]: Finished difference Result 291 states and 329 transitions. [2021-12-21 17:56:13,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 17:56:13,934 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-12-21 17:56:13,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 17:56:13,935 INFO L225 Difference]: With dead ends: 291 [2021-12-21 17:56:13,935 INFO L226 Difference]: Without dead ends: 291 [2021-12-21 17:56:13,936 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-21 17:56:13,941 INFO L933 BasicCegarLoop]: 313 mSDtfsCounter, 19 mSDsluCounter, 904 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 1217 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 17:56:13,942 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 1217 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 17:56:13,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2021-12-21 17:56:13,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 283. [2021-12-21 17:56:13,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 151 states have (on average 1.8278145695364238) internal successors, (276), 264 states have internal predecessors, (276), 29 states have call successors, (29), 8 states have call predecessors, (29), 7 states have return successors, (18), 13 states have call predecessors, (18), 15 states have call successors, (18) [2021-12-21 17:56:13,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 323 transitions. [2021-12-21 17:56:13,952 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 323 transitions. Word has length 9 [2021-12-21 17:56:13,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 17:56:13,952 INFO L470 AbstractCegarLoop]: Abstraction has 283 states and 323 transitions. [2021-12-21 17:56:13,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 17:56:13,952 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 323 transitions. [2021-12-21 17:56:13,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-21 17:56:13,953 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 17:56:13,953 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 17:56:13,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-21 17:56:13,953 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting dll_insert_masterErr0REQUIRES_VIOLATION === [dll_insert_masterErr0REQUIRES_VIOLATION, dll_insert_masterErr1REQUIRES_VIOLATION, dll_insert_masterErr2REQUIRES_VIOLATION (and 95 more)] === [2021-12-21 17:56:13,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 17:56:13,954 INFO L85 PathProgramCache]: Analyzing trace with hash 33414869, now seen corresponding path program 1 times [2021-12-21 17:56:13,954 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 17:56:13,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794079421] [2021-12-21 17:56:13,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 17:56:13,955 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 17:56:13,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:56:13,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 17:56:13,994 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 17:56:13,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794079421] [2021-12-21 17:56:13,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794079421] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 17:56:13,995 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 17:56:13,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-21 17:56:13,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333380829] [2021-12-21 17:56:13,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 17:56:13,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 17:56:13,997 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 17:56:13,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 17:56:13,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 17:56:13,997 INFO L87 Difference]: Start difference. First operand 283 states and 323 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 17:56:14,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 17:56:14,117 INFO L93 Difference]: Finished difference Result 280 states and 320 transitions. [2021-12-21 17:56:14,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 17:56:14,117 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-12-21 17:56:14,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 17:56:14,119 INFO L225 Difference]: With dead ends: 280 [2021-12-21 17:56:14,119 INFO L226 Difference]: Without dead ends: 280 [2021-12-21 17:56:14,120 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 17:56:14,127 INFO L933 BasicCegarLoop]: 278 mSDtfsCounter, 20 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 17:56:14,128 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 460 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 17:56:14,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2021-12-21 17:56:14,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 280. [2021-12-21 17:56:14,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 151 states have (on average 1.8079470198675496) internal successors, (273), 261 states have internal predecessors, (273), 29 states have call successors, (29), 8 states have call predecessors, (29), 7 states have return successors, (18), 13 states have call predecessors, (18), 15 states have call successors, (18) [2021-12-21 17:56:14,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 320 transitions. [2021-12-21 17:56:14,146 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 320 transitions. Word has length 11 [2021-12-21 17:56:14,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 17:56:14,147 INFO L470 AbstractCegarLoop]: Abstraction has 280 states and 320 transitions. [2021-12-21 17:56:14,147 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 17:56:14,147 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 320 transitions. [2021-12-21 17:56:14,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-21 17:56:14,148 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 17:56:14,148 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 17:56:14,148 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-21 17:56:14,148 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting dll_insert_masterErr1REQUIRES_VIOLATION === [dll_insert_masterErr0REQUIRES_VIOLATION, dll_insert_masterErr1REQUIRES_VIOLATION, dll_insert_masterErr2REQUIRES_VIOLATION (and 95 more)] === [2021-12-21 17:56:14,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 17:56:14,149 INFO L85 PathProgramCache]: Analyzing trace with hash 33414870, now seen corresponding path program 1 times [2021-12-21 17:56:14,149 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 17:56:14,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95454262] [2021-12-21 17:56:14,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 17:56:14,150 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 17:56:14,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:56:14,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 17:56:14,216 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 17:56:14,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95454262] [2021-12-21 17:56:14,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95454262] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 17:56:14,217 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 17:56:14,217 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-21 17:56:14,217 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686389437] [2021-12-21 17:56:14,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 17:56:14,218 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 17:56:14,218 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 17:56:14,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 17:56:14,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 17:56:14,219 INFO L87 Difference]: Start difference. First operand 280 states and 320 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 17:56:14,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 17:56:14,336 INFO L93 Difference]: Finished difference Result 277 states and 317 transitions. [2021-12-21 17:56:14,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 17:56:14,336 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-12-21 17:56:14,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 17:56:14,338 INFO L225 Difference]: With dead ends: 277 [2021-12-21 17:56:14,338 INFO L226 Difference]: Without dead ends: 277 [2021-12-21 17:56:14,338 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 17:56:14,339 INFO L933 BasicCegarLoop]: 278 mSDtfsCounter, 17 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 465 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 17:56:14,340 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 465 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 17:56:14,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2021-12-21 17:56:14,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 277. [2021-12-21 17:56:14,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 151 states have (on average 1.7880794701986755) internal successors, (270), 258 states have internal predecessors, (270), 29 states have call successors, (29), 8 states have call predecessors, (29), 7 states have return successors, (18), 13 states have call predecessors, (18), 15 states have call successors, (18) [2021-12-21 17:56:14,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 317 transitions. [2021-12-21 17:56:14,348 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 317 transitions. Word has length 11 [2021-12-21 17:56:14,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 17:56:14,349 INFO L470 AbstractCegarLoop]: Abstraction has 277 states and 317 transitions. [2021-12-21 17:56:14,349 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 17:56:14,349 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 317 transitions. [2021-12-21 17:56:14,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-21 17:56:14,350 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 17:56:14,350 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 17:56:14,350 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-21 17:56:14,350 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting dll_insert_masterErr6REQUIRES_VIOLATION === [dll_insert_masterErr0REQUIRES_VIOLATION, dll_insert_masterErr1REQUIRES_VIOLATION, dll_insert_masterErr2REQUIRES_VIOLATION (and 95 more)] === [2021-12-21 17:56:14,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 17:56:14,351 INFO L85 PathProgramCache]: Analyzing trace with hash -226556130, now seen corresponding path program 1 times [2021-12-21 17:56:14,351 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 17:56:14,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865955346] [2021-12-21 17:56:14,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 17:56:14,352 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 17:56:14,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:56:14,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 17:56:14,444 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 17:56:14,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865955346] [2021-12-21 17:56:14,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865955346] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 17:56:14,444 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 17:56:14,444 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 17:56:14,444 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273768901] [2021-12-21 17:56:14,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 17:56:14,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-21 17:56:14,445 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 17:56:14,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-21 17:56:14,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-21 17:56:14,446 INFO L87 Difference]: Start difference. First operand 277 states and 317 transitions. Second operand has 8 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 17:56:14,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 17:56:14,815 INFO L93 Difference]: Finished difference Result 300 states and 343 transitions. [2021-12-21 17:56:14,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-21 17:56:14,815 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-12-21 17:56:14,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 17:56:14,819 INFO L225 Difference]: With dead ends: 300 [2021-12-21 17:56:14,819 INFO L226 Difference]: Without dead ends: 300 [2021-12-21 17:56:14,819 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-12-21 17:56:14,821 INFO L933 BasicCegarLoop]: 266 mSDtfsCounter, 120 mSDsluCounter, 887 mSDsCounter, 0 mSdLazyCounter, 547 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 1153 SdHoareTripleChecker+Invalid, 562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-21 17:56:14,821 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [120 Valid, 1153 Invalid, 562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 547 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-21 17:56:14,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2021-12-21 17:56:14,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 289. [2021-12-21 17:56:14,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 162 states have (on average 1.7469135802469136) internal successors, (283), 268 states have internal predecessors, (283), 30 states have call successors, (30), 10 states have call predecessors, (30), 7 states have return successors, (19), 13 states have call predecessors, (19), 16 states have call successors, (19) [2021-12-21 17:56:14,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 332 transitions. [2021-12-21 17:56:14,830 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 332 transitions. Word has length 16 [2021-12-21 17:56:14,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 17:56:14,831 INFO L470 AbstractCegarLoop]: Abstraction has 289 states and 332 transitions. [2021-12-21 17:56:14,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 17:56:14,831 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 332 transitions. [2021-12-21 17:56:14,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-21 17:56:14,832 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 17:56:14,832 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 17:56:14,832 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-21 17:56:14,833 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting dll_insert_masterErr7REQUIRES_VIOLATION === [dll_insert_masterErr0REQUIRES_VIOLATION, dll_insert_masterErr1REQUIRES_VIOLATION, dll_insert_masterErr2REQUIRES_VIOLATION (and 95 more)] === [2021-12-21 17:56:14,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 17:56:14,833 INFO L85 PathProgramCache]: Analyzing trace with hash -226556129, now seen corresponding path program 1 times [2021-12-21 17:56:14,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 17:56:14,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428864241] [2021-12-21 17:56:14,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 17:56:14,834 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 17:56:14,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:56:14,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 17:56:14,963 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 17:56:14,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428864241] [2021-12-21 17:56:14,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428864241] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 17:56:14,964 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 17:56:14,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 17:56:14,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909717015] [2021-12-21 17:56:14,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 17:56:14,964 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 17:56:14,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 17:56:14,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 17:56:14,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 17:56:14,966 INFO L87 Difference]: Start difference. First operand 289 states and 332 transitions. Second operand has 7 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 17:56:15,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 17:56:15,412 INFO L93 Difference]: Finished difference Result 299 states and 342 transitions. [2021-12-21 17:56:15,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 17:56:15,413 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-12-21 17:56:15,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 17:56:15,414 INFO L225 Difference]: With dead ends: 299 [2021-12-21 17:56:15,414 INFO L226 Difference]: Without dead ends: 299 [2021-12-21 17:56:15,415 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-21 17:56:15,415 INFO L933 BasicCegarLoop]: 260 mSDtfsCounter, 80 mSDsluCounter, 756 mSDsCounter, 0 mSdLazyCounter, 697 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 1016 SdHoareTripleChecker+Invalid, 706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 697 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-21 17:56:15,415 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 1016 Invalid, 706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 697 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-21 17:56:15,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2021-12-21 17:56:15,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 289. [2021-12-21 17:56:15,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 162 states have (on average 1.7345679012345678) internal successors, (281), 268 states have internal predecessors, (281), 30 states have call successors, (30), 10 states have call predecessors, (30), 7 states have return successors, (19), 13 states have call predecessors, (19), 16 states have call successors, (19) [2021-12-21 17:56:15,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 330 transitions. [2021-12-21 17:56:15,422 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 330 transitions. Word has length 16 [2021-12-21 17:56:15,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 17:56:15,423 INFO L470 AbstractCegarLoop]: Abstraction has 289 states and 330 transitions. [2021-12-21 17:56:15,423 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 17:56:15,423 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 330 transitions. [2021-12-21 17:56:15,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-21 17:56:15,423 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 17:56:15,423 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 17:56:15,424 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-21 17:56:15,424 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting dll_insert_masterErr8REQUIRES_VIOLATION === [dll_insert_masterErr0REQUIRES_VIOLATION, dll_insert_masterErr1REQUIRES_VIOLATION, dll_insert_masterErr2REQUIRES_VIOLATION (and 95 more)] === [2021-12-21 17:56:15,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 17:56:15,425 INFO L85 PathProgramCache]: Analyzing trace with hash 1322891007, now seen corresponding path program 1 times [2021-12-21 17:56:15,425 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 17:56:15,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290264715] [2021-12-21 17:56:15,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 17:56:15,425 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 17:56:15,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:56:15,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 17:56:15,461 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 17:56:15,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290264715] [2021-12-21 17:56:15,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290264715] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 17:56:15,462 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 17:56:15,462 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 17:56:15,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477729218] [2021-12-21 17:56:15,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 17:56:15,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 17:56:15,463 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 17:56:15,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 17:56:15,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 17:56:15,464 INFO L87 Difference]: Start difference. First operand 289 states and 330 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 17:56:15,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 17:56:15,647 INFO L93 Difference]: Finished difference Result 288 states and 329 transitions. [2021-12-21 17:56:15,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 17:56:15,648 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-12-21 17:56:15,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 17:56:15,649 INFO L225 Difference]: With dead ends: 288 [2021-12-21 17:56:15,649 INFO L226 Difference]: Without dead ends: 288 [2021-12-21 17:56:15,649 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-21 17:56:15,650 INFO L933 BasicCegarLoop]: 274 mSDtfsCounter, 40 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 813 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-21 17:56:15,650 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 813 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-21 17:56:15,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2021-12-21 17:56:15,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 288. [2021-12-21 17:56:15,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 162 states have (on average 1.728395061728395) internal successors, (280), 267 states have internal predecessors, (280), 30 states have call successors, (30), 10 states have call predecessors, (30), 7 states have return successors, (19), 13 states have call predecessors, (19), 16 states have call successors, (19) [2021-12-21 17:56:15,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 329 transitions. [2021-12-21 17:56:15,658 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 329 transitions. Word has length 18 [2021-12-21 17:56:15,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 17:56:15,658 INFO L470 AbstractCegarLoop]: Abstraction has 288 states and 329 transitions. [2021-12-21 17:56:15,658 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 17:56:15,658 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 329 transitions. [2021-12-21 17:56:15,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-21 17:56:15,659 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 17:56:15,659 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 17:56:15,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-21 17:56:15,659 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting dll_insert_masterErr9REQUIRES_VIOLATION === [dll_insert_masterErr0REQUIRES_VIOLATION, dll_insert_masterErr1REQUIRES_VIOLATION, dll_insert_masterErr2REQUIRES_VIOLATION (and 95 more)] === [2021-12-21 17:56:15,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 17:56:15,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1322891008, now seen corresponding path program 1 times [2021-12-21 17:56:15,660 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 17:56:15,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177873200] [2021-12-21 17:56:15,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 17:56:15,660 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 17:56:15,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:56:15,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 17:56:15,719 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 17:56:15,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177873200] [2021-12-21 17:56:15,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177873200] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 17:56:15,719 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 17:56:15,719 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 17:56:15,720 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594717928] [2021-12-21 17:56:15,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 17:56:15,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 17:56:15,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 17:56:15,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 17:56:15,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-21 17:56:15,721 INFO L87 Difference]: Start difference. First operand 288 states and 329 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 17:56:15,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 17:56:15,881 INFO L93 Difference]: Finished difference Result 287 states and 328 transitions. [2021-12-21 17:56:15,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 17:56:15,882 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-12-21 17:56:15,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 17:56:15,883 INFO L225 Difference]: With dead ends: 287 [2021-12-21 17:56:15,883 INFO L226 Difference]: Without dead ends: 287 [2021-12-21 17:56:15,884 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-21 17:56:15,884 INFO L933 BasicCegarLoop]: 276 mSDtfsCounter, 55 mSDsluCounter, 638 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 914 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 17:56:15,884 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 914 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 17:56:15,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2021-12-21 17:56:15,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2021-12-21 17:56:15,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 162 states have (on average 1.7222222222222223) internal successors, (279), 266 states have internal predecessors, (279), 30 states have call successors, (30), 10 states have call predecessors, (30), 7 states have return successors, (19), 13 states have call predecessors, (19), 16 states have call successors, (19) [2021-12-21 17:56:15,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 328 transitions. [2021-12-21 17:56:15,895 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 328 transitions. Word has length 18 [2021-12-21 17:56:15,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 17:56:15,895 INFO L470 AbstractCegarLoop]: Abstraction has 287 states and 328 transitions. [2021-12-21 17:56:15,896 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 17:56:15,896 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 328 transitions. [2021-12-21 17:56:15,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-12-21 17:56:15,896 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 17:56:15,896 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 17:56:15,897 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-21 17:56:15,897 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting dll_insert_masterErr10REQUIRES_VIOLATION === [dll_insert_masterErr0REQUIRES_VIOLATION, dll_insert_masterErr1REQUIRES_VIOLATION, dll_insert_masterErr2REQUIRES_VIOLATION (and 95 more)] === [2021-12-21 17:56:15,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 17:56:15,897 INFO L85 PathProgramCache]: Analyzing trace with hash -12061856, now seen corresponding path program 1 times [2021-12-21 17:56:15,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 17:56:15,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772227994] [2021-12-21 17:56:15,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 17:56:15,898 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 17:56:15,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:56:16,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 17:56:16,098 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 17:56:16,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772227994] [2021-12-21 17:56:16,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772227994] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 17:56:16,099 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 17:56:16,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-21 17:56:16,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226016925] [2021-12-21 17:56:16,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 17:56:16,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-21 17:56:16,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 17:56:16,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-21 17:56:16,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-21 17:56:16,100 INFO L87 Difference]: Start difference. First operand 287 states and 328 transitions. Second operand has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 8 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 17:56:16,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 17:56:16,498 INFO L93 Difference]: Finished difference Result 326 states and 372 transitions. [2021-12-21 17:56:16,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-21 17:56:16,498 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 8 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-12-21 17:56:16,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 17:56:16,500 INFO L225 Difference]: With dead ends: 326 [2021-12-21 17:56:16,500 INFO L226 Difference]: Without dead ends: 326 [2021-12-21 17:56:16,500 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2021-12-21 17:56:16,501 INFO L933 BasicCegarLoop]: 272 mSDtfsCounter, 45 mSDsluCounter, 1514 mSDsCounter, 0 mSdLazyCounter, 529 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 1786 SdHoareTripleChecker+Invalid, 551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-21 17:56:16,501 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 1786 Invalid, 551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 529 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-21 17:56:16,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2021-12-21 17:56:16,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 307. [2021-12-21 17:56:16,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 179 states have (on average 1.681564245810056) internal successors, (301), 283 states have internal predecessors, (301), 32 states have call successors, (32), 12 states have call predecessors, (32), 8 states have return successors, (23), 14 states have call predecessors, (23), 18 states have call successors, (23) [2021-12-21 17:56:16,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 356 transitions. [2021-12-21 17:56:16,508 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 356 transitions. Word has length 20 [2021-12-21 17:56:16,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 17:56:16,508 INFO L470 AbstractCegarLoop]: Abstraction has 307 states and 356 transitions. [2021-12-21 17:56:16,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 8 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 17:56:16,508 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 356 transitions. [2021-12-21 17:56:16,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-21 17:56:16,509 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 17:56:16,509 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 17:56:16,509 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-21 17:56:16,509 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ##fun~$Pointer$~TO~VOIDErr1REQUIRES_VIOLATION === [dll_insert_masterErr0REQUIRES_VIOLATION, dll_insert_masterErr1REQUIRES_VIOLATION, dll_insert_masterErr2REQUIRES_VIOLATION (and 95 more)] === [2021-12-21 17:56:16,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 17:56:16,510 INFO L85 PathProgramCache]: Analyzing trace with hash 551710607, now seen corresponding path program 1 times [2021-12-21 17:56:16,510 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 17:56:16,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235506006] [2021-12-21 17:56:16,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 17:56:16,510 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 17:56:16,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:56:16,553 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-21 17:56:16,553 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 17:56:16,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235506006] [2021-12-21 17:56:16,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235506006] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 17:56:16,553 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 17:56:16,554 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-21 17:56:16,554 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779302550] [2021-12-21 17:56:16,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 17:56:16,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 17:56:16,554 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 17:56:16,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 17:56:16,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 17:56:16,556 INFO L87 Difference]: Start difference. First operand 307 states and 356 transitions. Second operand has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 17:56:16,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 17:56:16,653 INFO L93 Difference]: Finished difference Result 305 states and 354 transitions. [2021-12-21 17:56:16,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 17:56:16,654 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-12-21 17:56:16,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 17:56:16,657 INFO L225 Difference]: With dead ends: 305 [2021-12-21 17:56:16,657 INFO L226 Difference]: Without dead ends: 305 [2021-12-21 17:56:16,657 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 17:56:16,658 INFO L933 BasicCegarLoop]: 274 mSDtfsCounter, 21 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 17:56:16,658 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 458 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 17:56:16,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2021-12-21 17:56:16,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 305. [2021-12-21 17:56:16,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 179 states have (on average 1.670391061452514) internal successors, (299), 281 states have internal predecessors, (299), 32 states have call successors, (32), 12 states have call predecessors, (32), 8 states have return successors, (23), 14 states have call predecessors, (23), 18 states have call successors, (23) [2021-12-21 17:56:16,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 354 transitions. [2021-12-21 17:56:16,667 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 354 transitions. Word has length 27 [2021-12-21 17:56:16,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 17:56:16,667 INFO L470 AbstractCegarLoop]: Abstraction has 305 states and 354 transitions. [2021-12-21 17:56:16,667 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 17:56:16,667 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 354 transitions. [2021-12-21 17:56:16,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-12-21 17:56:16,668 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 17:56:16,668 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 17:56:16,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-21 17:56:16,669 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ##fun~$Pointer$~TO~VOIDErr5REQUIRES_VIOLATION === [dll_insert_masterErr0REQUIRES_VIOLATION, dll_insert_masterErr1REQUIRES_VIOLATION, dll_insert_masterErr2REQUIRES_VIOLATION (and 95 more)] === [2021-12-21 17:56:16,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 17:56:16,669 INFO L85 PathProgramCache]: Analyzing trace with hash 67060467, now seen corresponding path program 1 times [2021-12-21 17:56:16,669 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 17:56:16,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039693750] [2021-12-21 17:56:16,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 17:56:16,670 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 17:56:16,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:56:16,744 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-21 17:56:16,744 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 17:56:16,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039693750] [2021-12-21 17:56:16,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039693750] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 17:56:16,745 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 17:56:16,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 17:56:16,745 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442572766] [2021-12-21 17:56:16,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 17:56:16,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 17:56:16,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 17:56:16,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 17:56:16,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 17:56:16,746 INFO L87 Difference]: Start difference. First operand 305 states and 354 transitions. Second operand has 6 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (6), 2 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 17:56:17,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 17:56:17,069 INFO L93 Difference]: Finished difference Result 304 states and 353 transitions. [2021-12-21 17:56:17,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 17:56:17,070 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (6), 2 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-12-21 17:56:17,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 17:56:17,071 INFO L225 Difference]: With dead ends: 304 [2021-12-21 17:56:17,071 INFO L226 Difference]: Without dead ends: 304 [2021-12-21 17:56:17,072 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-12-21 17:56:17,072 INFO L933 BasicCegarLoop]: 268 mSDtfsCounter, 62 mSDsluCounter, 605 mSDsCounter, 0 mSdLazyCounter, 499 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 873 SdHoareTripleChecker+Invalid, 507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-21 17:56:17,072 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 873 Invalid, 507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 499 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-21 17:56:17,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2021-12-21 17:56:17,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 303. [2021-12-21 17:56:17,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 179 states have (on average 1.6592178770949721) internal successors, (297), 279 states have internal predecessors, (297), 32 states have call successors, (32), 12 states have call predecessors, (32), 8 states have return successors, (23), 14 states have call predecessors, (23), 18 states have call successors, (23) [2021-12-21 17:56:17,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 352 transitions. [2021-12-21 17:56:17,079 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 352 transitions. Word has length 31 [2021-12-21 17:56:17,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 17:56:17,080 INFO L470 AbstractCegarLoop]: Abstraction has 303 states and 352 transitions. [2021-12-21 17:56:17,080 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (6), 2 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 17:56:17,080 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 352 transitions. [2021-12-21 17:56:17,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-12-21 17:56:17,081 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 17:56:17,081 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 17:56:17,081 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-21 17:56:17,081 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ##fun~$Pointer$~TO~VOIDErr4REQUIRES_VIOLATION === [dll_insert_masterErr0REQUIRES_VIOLATION, dll_insert_masterErr1REQUIRES_VIOLATION, dll_insert_masterErr2REQUIRES_VIOLATION (and 95 more)] === [2021-12-21 17:56:17,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 17:56:17,082 INFO L85 PathProgramCache]: Analyzing trace with hash 67060466, now seen corresponding path program 1 times [2021-12-21 17:56:17,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 17:56:17,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795516768] [2021-12-21 17:56:17,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 17:56:17,082 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 17:56:17,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:56:17,146 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-21 17:56:17,146 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 17:56:17,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795516768] [2021-12-21 17:56:17,147 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795516768] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 17:56:17,147 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 17:56:17,147 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 17:56:17,147 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746346596] [2021-12-21 17:56:17,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 17:56:17,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 17:56:17,148 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 17:56:17,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 17:56:17,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-21 17:56:17,149 INFO L87 Difference]: Start difference. First operand 303 states and 352 transitions. Second operand has 7 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 2 states have call successors, (6), 2 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 17:56:17,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 17:56:17,377 INFO L93 Difference]: Finished difference Result 301 states and 350 transitions. [2021-12-21 17:56:17,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 17:56:17,377 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 2 states have call successors, (6), 2 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-12-21 17:56:17,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 17:56:17,379 INFO L225 Difference]: With dead ends: 301 [2021-12-21 17:56:17,379 INFO L226 Difference]: Without dead ends: 301 [2021-12-21 17:56:17,379 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-12-21 17:56:17,380 INFO L933 BasicCegarLoop]: 270 mSDtfsCounter, 74 mSDsluCounter, 705 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 975 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-21 17:56:17,380 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 975 Invalid, 402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-21 17:56:17,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2021-12-21 17:56:17,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 301. [2021-12-21 17:56:17,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 179 states have (on average 1.6480446927374302) internal successors, (295), 277 states have internal predecessors, (295), 32 states have call successors, (32), 12 states have call predecessors, (32), 8 states have return successors, (23), 14 states have call predecessors, (23), 18 states have call successors, (23) [2021-12-21 17:56:17,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 350 transitions. [2021-12-21 17:56:17,386 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 350 transitions. Word has length 31 [2021-12-21 17:56:17,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 17:56:17,386 INFO L470 AbstractCegarLoop]: Abstraction has 301 states and 350 transitions. [2021-12-21 17:56:17,386 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 2 states have call successors, (6), 2 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 17:56:17,386 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 350 transitions. [2021-12-21 17:56:17,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-21 17:56:17,388 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 17:56:17,388 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 17:56:17,388 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-21 17:56:17,388 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ##fun~$Pointer$~TO~VOIDErr6REQUIRES_VIOLATION === [dll_insert_masterErr0REQUIRES_VIOLATION, dll_insert_masterErr1REQUIRES_VIOLATION, dll_insert_masterErr2REQUIRES_VIOLATION (and 95 more)] === [2021-12-21 17:56:17,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 17:56:17,389 INFO L85 PathProgramCache]: Analyzing trace with hash 20600531, now seen corresponding path program 1 times [2021-12-21 17:56:17,389 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 17:56:17,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063716804] [2021-12-21 17:56:17,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 17:56:17,389 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 17:56:17,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:56:17,429 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-21 17:56:17,429 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 17:56:17,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063716804] [2021-12-21 17:56:17,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063716804] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 17:56:17,430 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 17:56:17,430 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 17:56:17,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61545937] [2021-12-21 17:56:17,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 17:56:17,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 17:56:17,430 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 17:56:17,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 17:56:17,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 17:56:17,431 INFO L87 Difference]: Start difference. First operand 301 states and 350 transitions. Second operand has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 1 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 17:56:17,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 17:56:17,615 INFO L93 Difference]: Finished difference Result 300 states and 349 transitions. [2021-12-21 17:56:17,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 17:56:17,615 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 1 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-12-21 17:56:17,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 17:56:17,617 INFO L225 Difference]: With dead ends: 300 [2021-12-21 17:56:17,617 INFO L226 Difference]: Without dead ends: 300 [2021-12-21 17:56:17,617 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-21 17:56:17,618 INFO L933 BasicCegarLoop]: 270 mSDtfsCounter, 38 mSDsluCounter, 531 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 801 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-21 17:56:17,618 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 801 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-21 17:56:17,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2021-12-21 17:56:17,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 300. [2021-12-21 17:56:17,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 179 states have (on average 1.6424581005586592) internal successors, (294), 276 states have internal predecessors, (294), 32 states have call successors, (32), 12 states have call predecessors, (32), 8 states have return successors, (23), 14 states have call predecessors, (23), 18 states have call successors, (23) [2021-12-21 17:56:17,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 349 transitions. [2021-12-21 17:56:17,623 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 349 transitions. Word has length 33 [2021-12-21 17:56:17,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 17:56:17,624 INFO L470 AbstractCegarLoop]: Abstraction has 300 states and 349 transitions. [2021-12-21 17:56:17,624 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 1 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 17:56:17,624 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 349 transitions. [2021-12-21 17:56:17,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-21 17:56:17,624 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 17:56:17,624 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 17:56:17,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-21 17:56:17,625 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ##fun~$Pointer$~TO~VOIDErr7REQUIRES_VIOLATION === [dll_insert_masterErr0REQUIRES_VIOLATION, dll_insert_masterErr1REQUIRES_VIOLATION, dll_insert_masterErr2REQUIRES_VIOLATION (and 95 more)] === [2021-12-21 17:56:17,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 17:56:17,625 INFO L85 PathProgramCache]: Analyzing trace with hash 20600532, now seen corresponding path program 1 times [2021-12-21 17:56:17,625 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 17:56:17,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841475152] [2021-12-21 17:56:17,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 17:56:17,625 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 17:56:17,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:56:17,681 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-21 17:56:17,682 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 17:56:17,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841475152] [2021-12-21 17:56:17,682 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841475152] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 17:56:17,682 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 17:56:17,682 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 17:56:17,682 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998801454] [2021-12-21 17:56:17,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 17:56:17,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 17:56:17,683 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 17:56:17,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 17:56:17,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-21 17:56:17,683 INFO L87 Difference]: Start difference. First operand 300 states and 349 transitions. Second operand has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 1 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 17:56:17,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 17:56:17,874 INFO L93 Difference]: Finished difference Result 299 states and 348 transitions. [2021-12-21 17:56:17,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 17:56:17,874 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 1 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-12-21 17:56:17,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 17:56:17,875 INFO L225 Difference]: With dead ends: 299 [2021-12-21 17:56:17,875 INFO L226 Difference]: Without dead ends: 299 [2021-12-21 17:56:17,876 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-21 17:56:17,876 INFO L933 BasicCegarLoop]: 270 mSDtfsCounter, 37 mSDsluCounter, 816 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 1086 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-21 17:56:17,876 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 1086 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-21 17:56:17,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2021-12-21 17:56:17,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 299. [2021-12-21 17:56:17,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 179 states have (on average 1.6368715083798884) internal successors, (293), 275 states have internal predecessors, (293), 32 states have call successors, (32), 12 states have call predecessors, (32), 8 states have return successors, (23), 14 states have call predecessors, (23), 18 states have call successors, (23) [2021-12-21 17:56:17,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 348 transitions. [2021-12-21 17:56:17,883 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 348 transitions. Word has length 33 [2021-12-21 17:56:17,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 17:56:17,883 INFO L470 AbstractCegarLoop]: Abstraction has 299 states and 348 transitions. [2021-12-21 17:56:17,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 1 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 17:56:17,883 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 348 transitions. [2021-12-21 17:56:17,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-12-21 17:56:17,884 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 17:56:17,884 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 17:56:17,884 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-21 17:56:17,884 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ##fun~$Pointer$~TO~VOIDErr8REQUIRES_VIOLATION === [dll_insert_masterErr0REQUIRES_VIOLATION, dll_insert_masterErr1REQUIRES_VIOLATION, dll_insert_masterErr2REQUIRES_VIOLATION (and 95 more)] === [2021-12-21 17:56:17,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 17:56:17,885 INFO L85 PathProgramCache]: Analyzing trace with hash -1677723852, now seen corresponding path program 1 times [2021-12-21 17:56:17,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 17:56:17,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023695307] [2021-12-21 17:56:17,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 17:56:17,885 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 17:56:17,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:56:18,040 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-21 17:56:18,040 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 17:56:18,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023695307] [2021-12-21 17:56:18,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023695307] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 17:56:18,041 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 17:56:18,041 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-21 17:56:18,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235793839] [2021-12-21 17:56:18,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 17:56:18,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-21 17:56:18,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 17:56:18,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-21 17:56:18,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-21 17:56:18,042 INFO L87 Difference]: Start difference. First operand 299 states and 348 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 2 states have call successors, (6), 2 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 17:56:18,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 17:56:18,343 INFO L93 Difference]: Finished difference Result 313 states and 363 transitions. [2021-12-21 17:56:18,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 17:56:18,347 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 2 states have call successors, (6), 2 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-12-21 17:56:18,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 17:56:18,349 INFO L225 Difference]: With dead ends: 313 [2021-12-21 17:56:18,349 INFO L226 Difference]: Without dead ends: 313 [2021-12-21 17:56:18,349 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2021-12-21 17:56:18,350 INFO L933 BasicCegarLoop]: 271 mSDtfsCounter, 24 mSDsluCounter, 1322 mSDsCounter, 0 mSdLazyCounter, 378 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 1593 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-21 17:56:18,350 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 1593 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 378 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-21 17:56:18,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2021-12-21 17:56:18,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 312. [2021-12-21 17:56:18,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 191 states have (on average 1.5968586387434556) internal successors, (305), 288 states have internal predecessors, (305), 32 states have call successors, (32), 12 states have call predecessors, (32), 9 states have return successors, (25), 14 states have call predecessors, (25), 18 states have call successors, (25) [2021-12-21 17:56:18,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 362 transitions. [2021-12-21 17:56:18,357 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 362 transitions. Word has length 35 [2021-12-21 17:56:18,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 17:56:18,357 INFO L470 AbstractCegarLoop]: Abstraction has 312 states and 362 transitions. [2021-12-21 17:56:18,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 2 states have call successors, (6), 2 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 17:56:18,357 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 362 transitions. [2021-12-21 17:56:18,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-12-21 17:56:18,358 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 17:56:18,358 INFO L514 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 17:56:18,358 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-21 17:56:18,358 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ##fun~$Pointer$~TO~VOIDErr8REQUIRES_VIOLATION === [dll_insert_masterErr0REQUIRES_VIOLATION, dll_insert_masterErr1REQUIRES_VIOLATION, dll_insert_masterErr2REQUIRES_VIOLATION (and 95 more)] === [2021-12-21 17:56:18,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 17:56:18,359 INFO L85 PathProgramCache]: Analyzing trace with hash 1451018694, now seen corresponding path program 1 times [2021-12-21 17:56:18,359 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 17:56:18,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535786633] [2021-12-21 17:56:18,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 17:56:18,359 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 17:56:18,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:56:18,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-21 17:56:18,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:56:18,676 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-21 17:56:18,676 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 17:56:18,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535786633] [2021-12-21 17:56:18,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535786633] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 17:56:18,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [342153505] [2021-12-21 17:56:18,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 17:56:18,677 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 17:56:18,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 17:56:18,679 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) [2021-12-21 17:56:18,691 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-21 17:56:18,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:56:18,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 65 conjunts are in the unsatisfiable core [2021-12-21 17:56:18,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 17:56:19,000 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-21 17:56:19,123 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 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 [2021-12-21 17:56:19,287 INFO L353 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2021-12-21 17:56:19,287 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 26 [2021-12-21 17:56:19,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 17:56:19,350 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2021-12-21 17:56:19,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 17:56:19,376 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2021-12-21 17:56:19,482 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 25 treesize of output 13 [2021-12-21 17:56:19,508 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-21 17:56:19,509 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 17:56:19,752 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_578 (Array Int Int)) (|v_##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base_12| Int)) (or (= (select (store |c_#valid| |v_##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base_12| 1) (select (select (store |c_#memory_$Pointer$.base| |v_##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base_12| v_ArrVal_578) |c_##fun~$Pointer$~TO~VOID_#~10#1.base|) |c_##fun~$Pointer$~TO~VOID_#~10#1.offset|)) 1) (not (< |v_##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base_12| |c_#StackHeapBarrier|)))) is different from false [2021-12-21 17:56:19,768 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_578 (Array Int Int)) (|v_##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base_12| Int)) (or (not (< |v_##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base_12| |c_#StackHeapBarrier|)) (= (select (store |c_#valid| |v_##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base_12| 1) (select (select (store |c_#memory_$Pointer$.base| |v_##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base_12| v_ArrVal_578) |c_##fun~$Pointer$~TO~VOID_#in~10#1.base|) |c_##fun~$Pointer$~TO~VOID_#in~10#1.offset|)) 1))) is different from false [2021-12-21 17:56:19,791 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_578 (Array Int Int)) (|v_##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base_12| Int)) (or (not (< |v_##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base_12| |c_#StackHeapBarrier|)) (= (select (store |c_#valid| |v_##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base_12| 1) (select (select (store |c_#memory_$Pointer$.base| |v_##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base_12| v_ArrVal_578) |c_dll_create_generic_~#dll~0.base|) |c_dll_create_generic_~#dll~0.offset|)) 1))) is different from false [2021-12-21 17:56:19,919 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 17:56:19,919 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 27 [2021-12-21 17:56:19,924 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 46 treesize of output 34 [2021-12-21 17:56:19,933 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 42 treesize of output 38 [2021-12-21 17:56:19,951 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-21 17:56:20,103 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 17:56:20,103 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 24 [2021-12-21 17:56:20,108 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-21 17:56:20,115 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 17:56:20,115 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 21 treesize of output 24 [2021-12-21 17:56:21,864 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 23 treesize of output 21 [2021-12-21 17:56:21,926 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 1 not checked. [2021-12-21 17:56:21,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [342153505] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 17:56:21,927 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 17:56:21,927 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16, 17] total 41 [2021-12-21 17:56:21,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483627669] [2021-12-21 17:56:21,927 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 17:56:21,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2021-12-21 17:56:21,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 17:56:21,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-12-21 17:56:21,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=1373, Unknown=4, NotChecked=228, Total=1722 [2021-12-21 17:56:21,929 INFO L87 Difference]: Start difference. First operand 312 states and 362 transitions. Second operand has 42 states, 36 states have (on average 2.4166666666666665) internal successors, (87), 36 states have internal predecessors, (87), 6 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-21 17:56:24,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 17:56:24,063 INFO L93 Difference]: Finished difference Result 339 states and 395 transitions. [2021-12-21 17:56:24,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-21 17:56:24,063 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 36 states have (on average 2.4166666666666665) internal successors, (87), 36 states have internal predecessors, (87), 6 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 51 [2021-12-21 17:56:24,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 17:56:24,065 INFO L225 Difference]: With dead ends: 339 [2021-12-21 17:56:24,065 INFO L226 Difference]: Without dead ends: 339 [2021-12-21 17:56:24,066 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 82 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 518 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=480, Invalid=2658, Unknown=66, NotChecked=336, Total=3540 [2021-12-21 17:56:24,067 INFO L933 BasicCegarLoop]: 235 mSDtfsCounter, 310 mSDsluCounter, 3362 mSDsCounter, 0 mSdLazyCounter, 2521 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 3597 SdHoareTripleChecker+Invalid, 4025 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 2521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1379 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-21 17:56:24,067 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [316 Valid, 3597 Invalid, 4025 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 2521 Invalid, 0 Unknown, 1379 Unchecked, 1.2s Time] [2021-12-21 17:56:24,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2021-12-21 17:56:24,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 328. [2021-12-21 17:56:24,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 206 states have (on average 1.5679611650485437) internal successors, (323), 303 states have internal predecessors, (323), 32 states have call successors, (32), 13 states have call predecessors, (32), 10 states have return successors, (24), 14 states have call predecessors, (24), 18 states have call successors, (24) [2021-12-21 17:56:24,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 379 transitions. [2021-12-21 17:56:24,074 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 379 transitions. Word has length 51 [2021-12-21 17:56:24,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 17:56:24,075 INFO L470 AbstractCegarLoop]: Abstraction has 328 states and 379 transitions. [2021-12-21 17:56:24,075 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 36 states have (on average 2.4166666666666665) internal successors, (87), 36 states have internal predecessors, (87), 6 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-21 17:56:24,075 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 379 transitions. [2021-12-21 17:56:24,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-12-21 17:56:24,076 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 17:56:24,076 INFO L514 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 17:56:24,105 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-21 17:56:24,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-12-21 17:56:24,284 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ##fun~$Pointer$~TO~VOIDErr9REQUIRES_VIOLATION === [dll_insert_masterErr0REQUIRES_VIOLATION, dll_insert_masterErr1REQUIRES_VIOLATION, dll_insert_masterErr2REQUIRES_VIOLATION (and 95 more)] === [2021-12-21 17:56:24,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 17:56:24,284 INFO L85 PathProgramCache]: Analyzing trace with hash 1451018695, now seen corresponding path program 1 times [2021-12-21 17:56:24,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 17:56:24,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034035409] [2021-12-21 17:56:24,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 17:56:24,285 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 17:56:24,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:56:24,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-21 17:56:24,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:56:24,666 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-21 17:56:24,666 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 17:56:24,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034035409] [2021-12-21 17:56:24,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034035409] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 17:56:24,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [173002013] [2021-12-21 17:56:24,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 17:56:24,667 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 17:56:24,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 17:56:24,668 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) [2021-12-21 17:56:24,685 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-21 17:56:24,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:56:24,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 87 conjunts are in the unsatisfiable core [2021-12-21 17:56:24,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 17:56:24,895 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-21 17:56:24,900 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-21 17:56:25,124 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 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 [2021-12-21 17:56:25,129 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 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 [2021-12-21 17:56:25,336 INFO L353 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2021-12-21 17:56:25,336 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2021-12-21 17:56:25,345 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-21 17:56:25,394 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-21 17:56:25,401 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2021-12-21 17:56:25,418 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-21 17:56:25,425 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2021-12-21 17:56:25,515 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 15 treesize of output 7 [2021-12-21 17:56:25,518 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 17 treesize of output 9 [2021-12-21 17:56:25,583 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-21 17:56:25,583 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 17:56:25,724 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_769 (Array Int Int))) (<= 0 (+ (select (select (store |c_#memory_$Pointer$.offset| |c_##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base| v_ArrVal_769) |c_##fun~$Pointer$~TO~VOID_dll_insert_slave_~dll#1.base|) |c_##fun~$Pointer$~TO~VOID_dll_insert_slave_~dll#1.offset|) 4))) (forall ((v_ArrVal_769 (Array Int Int)) (v_ArrVal_770 (Array Int Int))) (<= (+ (select (select (store |c_#memory_$Pointer$.offset| |c_##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base| v_ArrVal_769) |c_##fun~$Pointer$~TO~VOID_dll_insert_slave_~dll#1.base|) |c_##fun~$Pointer$~TO~VOID_dll_insert_slave_~dll#1.offset|) 8) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base| v_ArrVal_770) |c_##fun~$Pointer$~TO~VOID_dll_insert_slave_~dll#1.base|) |c_##fun~$Pointer$~TO~VOID_dll_insert_slave_~dll#1.offset|))))) is different from false [2021-12-21 17:56:28,188 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-21 17:56:28,188 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 1 [2021-12-21 17:56:28,279 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 17:56:28,280 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 62 [2021-12-21 17:56:28,286 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 17:56:28,286 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 54 [2021-12-21 17:56:28,293 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 17:56:28,294 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 80 treesize of output 83 [2021-12-21 17:56:28,303 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 17:56:28,304 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 137 treesize of output 132 [2021-12-21 17:56:28,316 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 101 treesize of output 97 [2021-12-21 17:56:28,321 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 97 treesize of output 93 [2021-12-21 17:56:28,329 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 93 treesize of output 91 [2021-12-21 17:56:29,046 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-21 17:56:29,054 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-21 17:56:29,056 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 25 treesize of output 24 [2021-12-21 17:56:29,086 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 3 not checked. [2021-12-21 17:56:29,086 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [173002013] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 17:56:29,086 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 17:56:29,086 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16, 13] total 39 [2021-12-21 17:56:29,087 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117240893] [2021-12-21 17:56:29,087 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 17:56:29,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2021-12-21 17:56:29,087 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 17:56:29,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-12-21 17:56:29,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=1374, Unknown=7, NotChecked=74, Total=1560 [2021-12-21 17:56:29,089 INFO L87 Difference]: Start difference. First operand 328 states and 379 transitions. Second operand has 40 states, 35 states have (on average 2.6857142857142855) internal successors, (94), 35 states have internal predecessors, (94), 5 states have call successors, (10), 5 states have call predecessors, (10), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-21 17:56:34,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 17:56:34,310 INFO L93 Difference]: Finished difference Result 363 states and 418 transitions. [2021-12-21 17:56:34,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-12-21 17:56:34,311 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 35 states have (on average 2.6857142857142855) internal successors, (94), 35 states have internal predecessors, (94), 5 states have call successors, (10), 5 states have call predecessors, (10), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 51 [2021-12-21 17:56:34,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 17:56:34,313 INFO L225 Difference]: With dead ends: 363 [2021-12-21 17:56:34,313 INFO L226 Difference]: Without dead ends: 363 [2021-12-21 17:56:34,318 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 79 SyntacticMatches, 3 SemanticMatches, 65 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 563 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=673, Invalid=3614, Unknown=7, NotChecked=128, Total=4422 [2021-12-21 17:56:34,320 INFO L933 BasicCegarLoop]: 237 mSDtfsCounter, 342 mSDsluCounter, 3174 mSDsCounter, 0 mSdLazyCounter, 2912 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 3411 SdHoareTripleChecker+Invalid, 4437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 2912 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1365 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-21 17:56:34,322 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [346 Valid, 3411 Invalid, 4437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 2912 Invalid, 0 Unknown, 1365 Unchecked, 1.4s Time] [2021-12-21 17:56:34,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2021-12-21 17:56:34,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 327. [2021-12-21 17:56:34,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 206 states have (on average 1.558252427184466) internal successors, (321), 302 states have internal predecessors, (321), 32 states have call successors, (32), 13 states have call predecessors, (32), 10 states have return successors, (23), 14 states have call predecessors, (23), 18 states have call successors, (23) [2021-12-21 17:56:34,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 376 transitions. [2021-12-21 17:56:34,338 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 376 transitions. Word has length 51 [2021-12-21 17:56:34,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 17:56:34,339 INFO L470 AbstractCegarLoop]: Abstraction has 327 states and 376 transitions. [2021-12-21 17:56:34,339 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 35 states have (on average 2.6857142857142855) internal successors, (94), 35 states have internal predecessors, (94), 5 states have call successors, (10), 5 states have call predecessors, (10), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-21 17:56:34,339 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 376 transitions. [2021-12-21 17:56:34,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-12-21 17:56:34,343 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 17:56:34,343 INFO L514 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 17:56:34,372 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-21 17:56:34,556 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,SelfDestructingSolverStorable17 [2021-12-21 17:56:34,557 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting dll_insert_masterErr10REQUIRES_VIOLATION === [dll_insert_masterErr0REQUIRES_VIOLATION, dll_insert_masterErr1REQUIRES_VIOLATION, dll_insert_masterErr2REQUIRES_VIOLATION (and 95 more)] === [2021-12-21 17:56:34,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 17:56:34,557 INFO L85 PathProgramCache]: Analyzing trace with hash -470108245, now seen corresponding path program 1 times [2021-12-21 17:56:34,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 17:56:34,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955558300] [2021-12-21 17:56:34,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 17:56:34,557 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 17:56:34,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:56:34,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-21 17:56:34,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:56:34,679 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-21 17:56:34,679 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 17:56:34,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955558300] [2021-12-21 17:56:34,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955558300] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 17:56:34,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1810697519] [2021-12-21 17:56:34,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 17:56:34,680 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 17:56:34,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 17:56:34,683 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) [2021-12-21 17:56:34,684 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-21 17:56:34,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:56:34,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 524 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-21 17:56:34,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 17:56:34,919 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-21 17:56:34,920 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 17:56:34,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1810697519] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 17:56:34,920 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 17:56:34,920 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 6 [2021-12-21 17:56:34,920 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822307191] [2021-12-21 17:56:34,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 17:56:34,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 17:56:34,921 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 17:56:34,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 17:56:34,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 17:56:34,922 INFO L87 Difference]: Start difference. First operand 327 states and 376 transitions. Second operand has 5 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 3 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-21 17:56:34,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 17:56:34,953 INFO L93 Difference]: Finished difference Result 313 states and 349 transitions. [2021-12-21 17:56:34,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 17:56:34,954 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 3 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 54 [2021-12-21 17:56:34,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 17:56:34,956 INFO L225 Difference]: With dead ends: 313 [2021-12-21 17:56:34,956 INFO L226 Difference]: Without dead ends: 313 [2021-12-21 17:56:34,956 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-21 17:56:34,956 INFO L933 BasicCegarLoop]: 278 mSDtfsCounter, 29 mSDsluCounter, 810 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 1088 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 17:56:34,957 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 1088 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 17:56:34,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2021-12-21 17:56:34,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 313. [2021-12-21 17:56:34,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 195 states have (on average 1.558974358974359) internal successors, (304), 291 states have internal predecessors, (304), 29 states have call successors, (29), 12 states have call predecessors, (29), 10 states have return successors, (16), 12 states have call predecessors, (16), 15 states have call successors, (16) [2021-12-21 17:56:34,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 349 transitions. [2021-12-21 17:56:34,965 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 349 transitions. Word has length 54 [2021-12-21 17:56:34,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 17:56:34,965 INFO L470 AbstractCegarLoop]: Abstraction has 313 states and 349 transitions. [2021-12-21 17:56:34,965 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 3 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-21 17:56:34,966 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 349 transitions. [2021-12-21 17:56:34,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-12-21 17:56:34,966 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 17:56:34,966 INFO L514 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 17:56:34,998 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-21 17:56:35,180 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 17:56:35,180 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting dll_insert_masterErr12REQUIRES_VIOLATION === [dll_insert_masterErr0REQUIRES_VIOLATION, dll_insert_masterErr1REQUIRES_VIOLATION, dll_insert_masterErr2REQUIRES_VIOLATION (and 95 more)] === [2021-12-21 17:56:35,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 17:56:35,181 INFO L85 PathProgramCache]: Analyzing trace with hash -996489836, now seen corresponding path program 1 times [2021-12-21 17:56:35,181 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 17:56:35,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869709507] [2021-12-21 17:56:35,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 17:56:35,181 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 17:56:35,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:56:35,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-21 17:56:35,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:56:35,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-21 17:56:35,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:56:35,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:56:35,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:56:35,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-21 17:56:35,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:56:35,660 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-21 17:56:35,660 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 17:56:35,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869709507] [2021-12-21 17:56:35,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869709507] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 17:56:35,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [585890602] [2021-12-21 17:56:35,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 17:56:35,661 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 17:56:35,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 17:56:35,664 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 17:56:35,688 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-21 17:56:35,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:56:35,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 550 conjuncts, 58 conjunts are in the unsatisfiable core [2021-12-21 17:56:35,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 17:56:35,997 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 [2021-12-21 17:56:36,050 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 [2021-12-21 17:56:36,372 WARN L860 $PredicateComparison]: unable to prove that (exists ((|##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base| Int) (v_ArrVal_1299 (Array Int Int))) (and (< |##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base| |c_#StackHeapBarrier|) (= |c_##fun~$Pointer$~TO~VOID_dll_insert_slave_~next~0#1.base| (select (select (store |c_old(#memory_$Pointer$.base)| |##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base| v_ArrVal_1299) |c_##fun~$Pointer$~TO~VOID_#in~10#1.base|) |c_##fun~$Pointer$~TO~VOID_#in~10#1.offset|)))) is different from true [2021-12-21 17:56:36,382 WARN L860 $PredicateComparison]: unable to prove that (exists ((|##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base| Int) (v_ArrVal_1299 (Array Int Int))) (and (= (select (select (store |c_old(#memory_$Pointer$.base)| |##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base| v_ArrVal_1299) |c_##fun~$Pointer$~TO~VOID_#in~10#1.base|) |c_##fun~$Pointer$~TO~VOID_#in~10#1.offset|) 0) (< |##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base| |c_#StackHeapBarrier|))) is different from true [2021-12-21 17:56:36,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 17:56:36,448 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 5 not checked. [2021-12-21 17:56:36,449 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 17:56:36,872 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1322 (Array Int Int)) (|v_##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base_40| Int)) (or (not (= (select (select (store |c_#memory_$Pointer$.base| |v_##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base_40| v_ArrVal_1322) |c_dll_create_generic_~#dll~0.base|) |c_dll_create_generic_~#dll~0.offset|) 0)) (not (< |v_##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base_40| |c_#StackHeapBarrier|)))) is different from false [2021-12-21 17:56:36,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [585890602] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 17:56:36,874 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-21 17:56:36,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 32 [2021-12-21 17:56:36,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037274196] [2021-12-21 17:56:36,874 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-21 17:56:36,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-12-21 17:56:36,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 17:56:36,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-12-21 17:56:36,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=789, Unknown=12, NotChecked=174, Total=1056 [2021-12-21 17:56:36,875 INFO L87 Difference]: Start difference. First operand 313 states and 349 transitions. Second operand has 32 states, 29 states have (on average 2.6206896551724137) internal successors, (76), 28 states have internal predecessors, (76), 5 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2021-12-21 17:56:38,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 17:56:38,284 INFO L93 Difference]: Finished difference Result 333 states and 373 transitions. [2021-12-21 17:56:38,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-21 17:56:38,285 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 29 states have (on average 2.6206896551724137) internal successors, (76), 28 states have internal predecessors, (76), 5 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) Word has length 64 [2021-12-21 17:56:38,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 17:56:38,286 INFO L225 Difference]: With dead ends: 333 [2021-12-21 17:56:38,287 INFO L226 Difference]: Without dead ends: 329 [2021-12-21 17:56:38,287 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 70 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 361 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=197, Invalid=1867, Unknown=18, NotChecked=270, Total=2352 [2021-12-21 17:56:38,292 INFO L933 BasicCegarLoop]: 231 mSDtfsCounter, 70 mSDsluCounter, 3896 mSDsCounter, 0 mSdLazyCounter, 2137 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 4127 SdHoareTripleChecker+Invalid, 3406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 2137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1231 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-21 17:56:38,293 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 4127 Invalid, 3406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 2137 Invalid, 0 Unknown, 1231 Unchecked, 0.9s Time] [2021-12-21 17:56:38,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2021-12-21 17:56:38,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 313. [2021-12-21 17:56:38,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 195 states have (on average 1.5538461538461539) internal successors, (303), 291 states have internal predecessors, (303), 29 states have call successors, (29), 12 states have call predecessors, (29), 10 states have return successors, (16), 12 states have call predecessors, (16), 15 states have call successors, (16) [2021-12-21 17:56:38,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 348 transitions. [2021-12-21 17:56:38,304 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 348 transitions. Word has length 64 [2021-12-21 17:56:38,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 17:56:38,308 INFO L470 AbstractCegarLoop]: Abstraction has 313 states and 348 transitions. [2021-12-21 17:56:38,308 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 29 states have (on average 2.6206896551724137) internal successors, (76), 28 states have internal predecessors, (76), 5 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2021-12-21 17:56:38,308 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 348 transitions. [2021-12-21 17:56:38,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-21 17:56:38,309 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 17:56:38,309 INFO L514 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 17:56:38,335 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-21 17:56:38,510 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 17:56:38,510 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting dll_insert_masterErr12REQUIRES_VIOLATION === [dll_insert_masterErr0REQUIRES_VIOLATION, dll_insert_masterErr1REQUIRES_VIOLATION, dll_insert_masterErr2REQUIRES_VIOLATION (and 95 more)] === [2021-12-21 17:56:38,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 17:56:38,510 INFO L85 PathProgramCache]: Analyzing trace with hash 2033150353, now seen corresponding path program 1 times [2021-12-21 17:56:38,510 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 17:56:38,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860882927] [2021-12-21 17:56:38,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 17:56:38,511 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 17:56:38,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:56:38,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-21 17:56:38,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:56:38,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-21 17:56:38,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:56:40,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:56:40,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:56:40,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-21 17:56:40,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:56:41,883 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 7 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-21 17:56:41,883 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 17:56:41,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860882927] [2021-12-21 17:56:41,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860882927] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 17:56:41,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [304512318] [2021-12-21 17:56:41,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 17:56:41,883 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 17:56:41,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 17:56:41,884 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 17:56:41,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-21 17:56:42,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:56:42,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 79 conjunts are in the unsatisfiable core [2021-12-21 17:56:42,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 17:56:42,191 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 5 treesize of output 3 [2021-12-21 17:56:42,411 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 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 [2021-12-21 17:56:42,554 INFO L353 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-12-21 17:56:42,554 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 23 treesize of output 15 [2021-12-21 17:56:42,557 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 [2021-12-21 17:56:47,028 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 29 treesize of output 21 [2021-12-21 17:56:47,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 17:56:47,668 INFO L353 Elim1Store]: treesize reduction 91, result has 20.2 percent of original size [2021-12-21 17:56:47,669 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 35 treesize of output 46 [2021-12-21 17:56:47,686 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 17:56:47,687 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 17:56:48,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [304512318] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 17:56:48,110 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-21 17:56:48,110 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 21] total 43 [2021-12-21 17:56:48,110 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075031073] [2021-12-21 17:56:48,110 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-21 17:56:48,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2021-12-21 17:56:48,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 17:56:48,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2021-12-21 17:56:48,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=1804, Unknown=20, NotChecked=0, Total=1980 [2021-12-21 17:56:48,111 INFO L87 Difference]: Start difference. First operand 313 states and 348 transitions. Second operand has 44 states, 39 states have (on average 2.58974358974359) internal successors, (101), 39 states have internal predecessors, (101), 8 states have call successors, (11), 4 states have call predecessors, (11), 7 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2021-12-21 17:56:50,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 17:56:50,289 INFO L93 Difference]: Finished difference Result 347 states and 386 transitions. [2021-12-21 17:56:50,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-21 17:56:50,289 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 39 states have (on average 2.58974358974359) internal successors, (101), 39 states have internal predecessors, (101), 8 states have call successors, (11), 4 states have call predecessors, (11), 7 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) Word has length 65 [2021-12-21 17:56:50,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 17:56:50,291 INFO L225 Difference]: With dead ends: 347 [2021-12-21 17:56:50,291 INFO L226 Difference]: Without dead ends: 347 [2021-12-21 17:56:50,292 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 65 SyntacticMatches, 4 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 809 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=264, Invalid=3132, Unknown=26, NotChecked=0, Total=3422 [2021-12-21 17:56:50,292 INFO L933 BasicCegarLoop]: 218 mSDtfsCounter, 176 mSDsluCounter, 2123 mSDsCounter, 0 mSdLazyCounter, 2004 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 2341 SdHoareTripleChecker+Invalid, 3882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 2004 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1827 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-21 17:56:50,292 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [176 Valid, 2341 Invalid, 3882 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 2004 Invalid, 0 Unknown, 1827 Unchecked, 1.2s Time] [2021-12-21 17:56:50,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2021-12-21 17:56:50,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 324. [2021-12-21 17:56:50,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 204 states have (on average 1.5441176470588236) internal successors, (315), 298 states have internal predecessors, (315), 29 states have call successors, (29), 12 states have call predecessors, (29), 12 states have return successors, (19), 16 states have call predecessors, (19), 15 states have call successors, (19) [2021-12-21 17:56:50,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 363 transitions. [2021-12-21 17:56:50,300 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 363 transitions. Word has length 65 [2021-12-21 17:56:50,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 17:56:50,300 INFO L470 AbstractCegarLoop]: Abstraction has 324 states and 363 transitions. [2021-12-21 17:56:50,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 39 states have (on average 2.58974358974359) internal successors, (101), 39 states have internal predecessors, (101), 8 states have call successors, (11), 4 states have call predecessors, (11), 7 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2021-12-21 17:56:50,301 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 363 transitions. [2021-12-21 17:56:50,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-21 17:56:50,301 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 17:56:50,301 INFO L514 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 17:56:50,320 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-21 17:56:50,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 17:56:50,507 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting dll_insert_masterErr13REQUIRES_VIOLATION === [dll_insert_masterErr0REQUIRES_VIOLATION, dll_insert_masterErr1REQUIRES_VIOLATION, dll_insert_masterErr2REQUIRES_VIOLATION (and 95 more)] === [2021-12-21 17:56:50,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 17:56:50,508 INFO L85 PathProgramCache]: Analyzing trace with hash 2033150354, now seen corresponding path program 1 times [2021-12-21 17:56:50,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 17:56:50,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307758633] [2021-12-21 17:56:50,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 17:56:50,508 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 17:56:50,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:56:50,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-21 17:56:50,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:56:50,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-21 17:56:50,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:57:12,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:57:12,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:57:12,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-21 17:57:12,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat