./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 c3fed411 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-tmp.no-commuhash-c3fed41 [2021-12-18 19:19:11,272 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-18 19:19:11,274 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-18 19:19:11,302 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-18 19:19:11,302 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-18 19:19:11,304 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-18 19:19:11,305 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-18 19:19:11,306 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-18 19:19:11,308 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-18 19:19:11,308 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-18 19:19:11,309 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-18 19:19:11,310 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-18 19:19:11,311 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-18 19:19:11,312 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-18 19:19:11,313 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-18 19:19:11,314 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-18 19:19:11,314 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-18 19:19:11,315 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-18 19:19:11,316 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-18 19:19:11,318 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-18 19:19:11,319 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-18 19:19:11,320 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-18 19:19:11,321 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-18 19:19:11,322 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-18 19:19:11,324 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-18 19:19:11,324 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-18 19:19:11,325 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-18 19:19:11,325 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-18 19:19:11,326 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-18 19:19:11,326 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-18 19:19:11,327 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-18 19:19:11,327 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-18 19:19:11,328 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-18 19:19:11,329 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-18 19:19:11,331 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-18 19:19:11,331 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-18 19:19:11,332 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-18 19:19:11,332 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-18 19:19:11,332 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-18 19:19:11,333 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-18 19:19:11,334 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-18 19:19:11,335 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-MemCleanup-32bit-Automizer_Default.epf [2021-12-18 19:19:11,364 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-18 19:19:11,366 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-18 19:19:11,367 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-18 19:19:11,367 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-18 19:19:11,368 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-18 19:19:11,368 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-18 19:19:11,369 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-18 19:19:11,369 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-18 19:19:11,369 INFO L138 SettingsManager]: * Use SBE=true [2021-12-18 19:19:11,369 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-18 19:19:11,370 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-18 19:19:11,370 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-18 19:19:11,370 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-18 19:19:11,371 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-18 19:19:11,371 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-18 19:19:11,371 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-18 19:19:11,371 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-18 19:19:11,371 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-18 19:19:11,371 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-18 19:19:11,372 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-18 19:19:11,372 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-18 19:19:11,372 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-18 19:19:11,372 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-18 19:19:11,372 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-18 19:19:11,373 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 19:19:11,373 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-18 19:19:11,373 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-18 19:19:11,373 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-18 19:19:11,373 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-18 19:19:11,374 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-18 19:19:11,374 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0eca46c14885d62179341dcc13b398752af03e020a80dcf533f4c9afc7372707 [2021-12-18 19:19:11,615 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-18 19:19:11,637 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-18 19:19:11,639 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-18 19:19:11,641 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-18 19:19:11,641 INFO L275 PluginConnector]: CDTParser initialized [2021-12-18 19:19:11,642 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/heap-manipulation/dll_of_dll-2.i [2021-12-18 19:19:11,700 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/42ae37e4a/32d293f744854be99c7576e0e2c77f3a/FLAGc7fadc21f [2021-12-18 19:19:12,082 INFO L306 CDTParser]: Found 1 translation units. [2021-12-18 19:19:12,085 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/heap-manipulation/dll_of_dll-2.i [2021-12-18 19:19:12,102 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/42ae37e4a/32d293f744854be99c7576e0e2c77f3a/FLAGc7fadc21f [2021-12-18 19:19:12,438 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/42ae37e4a/32d293f744854be99c7576e0e2c77f3a [2021-12-18 19:19:12,441 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-18 19:19:12,444 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-18 19:19:12,448 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-18 19:19:12,448 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-18 19:19:12,451 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-18 19:19:12,452 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 07:19:12" (1/1) ... [2021-12-18 19:19:12,453 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b9cf99d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:19:12, skipping insertion in model container [2021-12-18 19:19:12,453 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 07:19:12" (1/1) ... [2021-12-18 19:19:12,459 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-18 19:19:12,488 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-18 19:19:12,706 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] [2021-12-18 19:19:12,742 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 19:19:12,748 INFO L203 MainTranslator]: Completed pre-run [2021-12-18 19:19:12,772 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] [2021-12-18 19:19:12,795 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 19:19:12,828 INFO L208 MainTranslator]: Completed translation [2021-12-18 19:19:12,828 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:19:12 WrapperNode [2021-12-18 19:19:12,830 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-18 19:19:12,831 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-18 19:19:12,831 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-18 19:19:12,831 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-18 19:19:12,838 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:19:12" (1/1) ... [2021-12-18 19:19:12,866 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:19:12" (1/1) ... [2021-12-18 19:19:12,907 INFO L137 Inliner]: procedures = 140, calls = 94, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 234 [2021-12-18 19:19:12,908 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-18 19:19:12,910 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-18 19:19:12,910 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-18 19:19:12,910 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-18 19:19:12,917 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:19:12" (1/1) ... [2021-12-18 19:19:12,917 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:19:12" (1/1) ... [2021-12-18 19:19:12,932 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:19:12" (1/1) ... [2021-12-18 19:19:12,934 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:19:12" (1/1) ... [2021-12-18 19:19:12,948 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:19:12" (1/1) ... [2021-12-18 19:19:12,958 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:19:12" (1/1) ... [2021-12-18 19:19:12,964 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:19:12" (1/1) ... [2021-12-18 19:19:12,977 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-18 19:19:12,978 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-18 19:19:12,979 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-18 19:19:12,979 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-18 19:19:12,980 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:19:12" (1/1) ... [2021-12-18 19:19:12,988 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 19:19:12,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 19:19:13,009 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) [2021-12-18 19:19:13,011 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 [2021-12-18 19:19:13,039 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2021-12-18 19:19:13,039 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2021-12-18 19:19:13,039 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_base [2021-12-18 19:19:13,039 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_base [2021-12-18 19:19:13,040 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-18 19:19:13,040 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-18 19:19:13,040 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_master [2021-12-18 19:19:13,040 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_master [2021-12-18 19:19:13,040 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-18 19:19:13,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-18 19:19:13,040 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-12-18 19:19:13,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-12-18 19:19:13,040 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-18 19:19:13,040 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-18 19:19:13,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-18 19:19:13,041 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_generic [2021-12-18 19:19:13,041 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_generic [2021-12-18 19:19:13,041 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_slave [2021-12-18 19:19:13,041 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_slave [2021-12-18 19:19:13,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-18 19:19:13,041 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-18 19:19:13,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-18 19:19:13,144 INFO L236 CfgBuilder]: Building ICFG [2021-12-18 19:19:13,145 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-18 19:19:13,662 INFO L277 CfgBuilder]: Performing block encoding [2021-12-18 19:19:13,669 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-18 19:19:13,669 INFO L301 CfgBuilder]: Removed 38 assume(true) statements. [2021-12-18 19:19:13,676 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 07:19:13 BoogieIcfgContainer [2021-12-18 19:19:13,676 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-18 19:19:13,678 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-18 19:19:13,678 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-18 19:19:13,681 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-18 19:19:13,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 07:19:12" (1/3) ... [2021-12-18 19:19:13,682 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d7ecbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 07:19:13, skipping insertion in model container [2021-12-18 19:19:13,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:19:12" (2/3) ... [2021-12-18 19:19:13,683 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d7ecbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 07:19:13, skipping insertion in model container [2021-12-18 19:19:13,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 07:19:13" (3/3) ... [2021-12-18 19:19:13,684 INFO L111 eAbstractionObserver]: Analyzing ICFG dll_of_dll-2.i [2021-12-18 19:19:13,689 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-18 19:19:13,690 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 98 error locations. [2021-12-18 19:19:13,729 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-18 19:19:13,735 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 [2021-12-18 19:19:13,735 INFO L340 AbstractCegarLoop]: Starting to check reachability of 98 error locations. [2021-12-18 19:19:13,752 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) [2021-12-18 19:19:13,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-18 19:19:13,760 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 19:19:13,763 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 19:19:13,763 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)] === [2021-12-18 19:19:13,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 19:19:13,768 INFO L85 PathProgramCache]: Analyzing trace with hash -853608627, now seen corresponding path program 1 times [2021-12-18 19:19:13,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 19:19:13,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324395176] [2021-12-18 19:19:13,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 19:19:13,776 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 19:19:13,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:19:13,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 19:19:13,940 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 19:19:13,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324395176] [2021-12-18 19:19:13,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324395176] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 19:19:13,942 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 19:19:13,942 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-18 19:19:13,944 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026030080] [2021-12-18 19:19:13,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 19:19:13,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-18 19:19:13,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 19:19:13,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-18 19:19:13,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-18 19:19:13,974 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) [2021-12-18 19:19:14,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 19:19:14,005 INFO L93 Difference]: Finished difference Result 269 states and 299 transitions. [2021-12-18 19:19:14,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-18 19:19:14,007 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 [2021-12-18 19:19:14,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 19:19:14,015 INFO L225 Difference]: With dead ends: 269 [2021-12-18 19:19:14,016 INFO L226 Difference]: Without dead ends: 267 [2021-12-18 19:19:14,017 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 [2021-12-18 19:19:14,020 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 [2021-12-18 19:19:14,021 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] [2021-12-18 19:19:14,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2021-12-18 19:19:14,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 267. [2021-12-18 19:19:14,066 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) [2021-12-18 19:19:14,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 297 transitions. [2021-12-18 19:19:14,072 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 297 transitions. Word has length 9 [2021-12-18 19:19:14,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 19:19:14,073 INFO L470 AbstractCegarLoop]: Abstraction has 267 states and 297 transitions. [2021-12-18 19:19:14,073 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) [2021-12-18 19:19:14,073 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 297 transitions. [2021-12-18 19:19:14,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-18 19:19:14,074 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 19:19:14,074 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 19:19:14,074 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-18 19:19:14,074 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)] === [2021-12-18 19:19:14,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 19:19:14,075 INFO L85 PathProgramCache]: Analyzing trace with hash -853608565, now seen corresponding path program 1 times [2021-12-18 19:19:14,075 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 19:19:14,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26331385] [2021-12-18 19:19:14,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 19:19:14,076 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 19:19:14,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:19:14,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 19:19:14,173 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 19:19:14,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26331385] [2021-12-18 19:19:14,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26331385] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 19:19:14,173 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 19:19:14,173 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-18 19:19:14,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192663016] [2021-12-18 19:19:14,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 19:19:14,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 19:19:14,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 19:19:14,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 19:19:14,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 19:19:14,177 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) [2021-12-18 19:19:14,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 19:19:14,355 INFO L93 Difference]: Finished difference Result 267 states and 299 transitions. [2021-12-18 19:19:14,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 19:19:14,356 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 [2021-12-18 19:19:14,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 19:19:14,358 INFO L225 Difference]: With dead ends: 267 [2021-12-18 19:19:14,358 INFO L226 Difference]: Without dead ends: 267 [2021-12-18 19:19:14,359 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 [2021-12-18 19:19:14,360 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, 0.2s IncrementalHoareTripleChecker+Time [2021-12-18 19:19:14,364 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 463 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-18 19:19:14,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2021-12-18 19:19:14,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 265. [2021-12-18 19:19:14,386 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) [2021-12-18 19:19:14,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 295 transitions. [2021-12-18 19:19:14,396 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 295 transitions. Word has length 9 [2021-12-18 19:19:14,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 19:19:14,396 INFO L470 AbstractCegarLoop]: Abstraction has 265 states and 295 transitions. [2021-12-18 19:19:14,398 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) [2021-12-18 19:19:14,398 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 295 transitions. [2021-12-18 19:19:14,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-18 19:19:14,399 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 19:19:14,399 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 19:19:14,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-18 19:19:14,399 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)] === [2021-12-18 19:19:14,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 19:19:14,400 INFO L85 PathProgramCache]: Analyzing trace with hash -853608564, now seen corresponding path program 1 times [2021-12-18 19:19:14,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 19:19:14,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347713768] [2021-12-18 19:19:14,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 19:19:14,402 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 19:19:14,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:19:14,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 19:19:14,564 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 19:19:14,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347713768] [2021-12-18 19:19:14,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347713768] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 19:19:14,565 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 19:19:14,565 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-18 19:19:14,565 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444037817] [2021-12-18 19:19:14,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 19:19:14,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-18 19:19:14,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 19:19:14,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-18 19:19:14,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-18 19:19:14,568 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) [2021-12-18 19:19:14,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 19:19:14,660 INFO L93 Difference]: Finished difference Result 291 states and 329 transitions. [2021-12-18 19:19:14,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-18 19:19:14,660 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 [2021-12-18 19:19:14,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 19:19:14,662 INFO L225 Difference]: With dead ends: 291 [2021-12-18 19:19:14,662 INFO L226 Difference]: Without dead ends: 291 [2021-12-18 19:19:14,663 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 [2021-12-18 19:19:14,670 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 [2021-12-18 19:19:14,671 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] [2021-12-18 19:19:14,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2021-12-18 19:19:14,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 283. [2021-12-18 19:19:14,702 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) [2021-12-18 19:19:14,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 323 transitions. [2021-12-18 19:19:14,704 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 323 transitions. Word has length 9 [2021-12-18 19:19:14,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 19:19:14,705 INFO L470 AbstractCegarLoop]: Abstraction has 283 states and 323 transitions. [2021-12-18 19:19:14,705 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) [2021-12-18 19:19:14,705 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 323 transitions. [2021-12-18 19:19:14,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-18 19:19:14,705 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 19:19:14,706 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 19:19:14,706 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-18 19:19:14,706 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)] === [2021-12-18 19:19:14,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 19:19:14,709 INFO L85 PathProgramCache]: Analyzing trace with hash 33414869, now seen corresponding path program 1 times [2021-12-18 19:19:14,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 19:19:14,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497511133] [2021-12-18 19:19:14,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 19:19:14,709 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 19:19:14,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:19:14,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 19:19:14,767 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 19:19:14,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497511133] [2021-12-18 19:19:14,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497511133] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 19:19:14,768 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 19:19:14,768 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-18 19:19:14,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193077483] [2021-12-18 19:19:14,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 19:19:14,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 19:19:14,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 19:19:14,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 19:19:14,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 19:19:14,771 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) [2021-12-18 19:19:14,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 19:19:14,876 INFO L93 Difference]: Finished difference Result 280 states and 320 transitions. [2021-12-18 19:19:14,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 19:19:14,877 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 [2021-12-18 19:19:14,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 19:19:14,878 INFO L225 Difference]: With dead ends: 280 [2021-12-18 19:19:14,879 INFO L226 Difference]: Without dead ends: 280 [2021-12-18 19:19:14,879 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 [2021-12-18 19:19:14,889 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 [2021-12-18 19:19:14,891 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] [2021-12-18 19:19:14,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2021-12-18 19:19:14,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 280. [2021-12-18 19:19:14,914 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) [2021-12-18 19:19:14,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 320 transitions. [2021-12-18 19:19:14,917 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 320 transitions. Word has length 11 [2021-12-18 19:19:14,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 19:19:14,918 INFO L470 AbstractCegarLoop]: Abstraction has 280 states and 320 transitions. [2021-12-18 19:19:14,918 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) [2021-12-18 19:19:14,918 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 320 transitions. [2021-12-18 19:19:14,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-18 19:19:14,919 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 19:19:14,919 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 19:19:14,919 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-18 19:19:14,919 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)] === [2021-12-18 19:19:14,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 19:19:14,921 INFO L85 PathProgramCache]: Analyzing trace with hash 33414870, now seen corresponding path program 1 times [2021-12-18 19:19:14,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 19:19:14,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296133136] [2021-12-18 19:19:14,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 19:19:14,922 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 19:19:14,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:19:15,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 19:19:15,002 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 19:19:15,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296133136] [2021-12-18 19:19:15,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296133136] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 19:19:15,003 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 19:19:15,003 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-18 19:19:15,003 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129139711] [2021-12-18 19:19:15,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 19:19:15,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 19:19:15,004 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 19:19:15,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 19:19:15,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 19:19:15,005 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) [2021-12-18 19:19:15,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 19:19:15,114 INFO L93 Difference]: Finished difference Result 277 states and 317 transitions. [2021-12-18 19:19:15,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 19:19:15,116 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 [2021-12-18 19:19:15,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 19:19:15,118 INFO L225 Difference]: With dead ends: 277 [2021-12-18 19:19:15,118 INFO L226 Difference]: Without dead ends: 277 [2021-12-18 19:19:15,118 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 [2021-12-18 19:19:15,119 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 [2021-12-18 19:19:15,120 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] [2021-12-18 19:19:15,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2021-12-18 19:19:15,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 277. [2021-12-18 19:19:15,133 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) [2021-12-18 19:19:15,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 317 transitions. [2021-12-18 19:19:15,140 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 317 transitions. Word has length 11 [2021-12-18 19:19:15,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 19:19:15,140 INFO L470 AbstractCegarLoop]: Abstraction has 277 states and 317 transitions. [2021-12-18 19:19:15,141 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) [2021-12-18 19:19:15,141 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 317 transitions. [2021-12-18 19:19:15,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-18 19:19:15,141 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 19:19:15,142 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 19:19:15,142 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-18 19:19:15,142 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)] === [2021-12-18 19:19:15,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 19:19:15,143 INFO L85 PathProgramCache]: Analyzing trace with hash -226556130, now seen corresponding path program 1 times [2021-12-18 19:19:15,143 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 19:19:15,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14189846] [2021-12-18 19:19:15,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 19:19:15,144 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 19:19:15,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:19:15,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 19:19:15,309 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 19:19:15,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14189846] [2021-12-18 19:19:15,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14189846] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 19:19:15,310 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 19:19:15,310 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-18 19:19:15,310 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415985814] [2021-12-18 19:19:15,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 19:19:15,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-18 19:19:15,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 19:19:15,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-18 19:19:15,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-18 19:19:15,311 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) [2021-12-18 19:19:15,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 19:19:15,645 INFO L93 Difference]: Finished difference Result 300 states and 343 transitions. [2021-12-18 19:19:15,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-18 19:19:15,645 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 [2021-12-18 19:19:15,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 19:19:15,647 INFO L225 Difference]: With dead ends: 300 [2021-12-18 19:19:15,647 INFO L226 Difference]: Without dead ends: 300 [2021-12-18 19:19:15,647 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 [2021-12-18 19:19:15,648 INFO L933 BasicCegarLoop]: 266 mSDtfsCounter, 120 mSDsluCounter, 887 mSDsCounter, 0 mSdLazyCounter, 547 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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 [2021-12-18 19:19:15,648 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] [2021-12-18 19:19:15,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2021-12-18 19:19:15,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 289. [2021-12-18 19:19:15,655 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) [2021-12-18 19:19:15,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 332 transitions. [2021-12-18 19:19:15,657 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 332 transitions. Word has length 16 [2021-12-18 19:19:15,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 19:19:15,657 INFO L470 AbstractCegarLoop]: Abstraction has 289 states and 332 transitions. [2021-12-18 19:19:15,658 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) [2021-12-18 19:19:15,658 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 332 transitions. [2021-12-18 19:19:15,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-18 19:19:15,658 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 19:19:15,670 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 19:19:15,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-18 19:19:15,671 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)] === [2021-12-18 19:19:15,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 19:19:15,672 INFO L85 PathProgramCache]: Analyzing trace with hash -226556129, now seen corresponding path program 1 times [2021-12-18 19:19:15,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 19:19:15,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853372620] [2021-12-18 19:19:15,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 19:19:15,672 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 19:19:15,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:19:15,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 19:19:15,801 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 19:19:15,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853372620] [2021-12-18 19:19:15,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853372620] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 19:19:15,802 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 19:19:15,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-18 19:19:15,803 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036687295] [2021-12-18 19:19:15,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 19:19:15,803 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-18 19:19:15,803 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 19:19:15,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-18 19:19:15,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-18 19:19:15,804 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) [2021-12-18 19:19:16,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 19:19:16,218 INFO L93 Difference]: Finished difference Result 299 states and 342 transitions. [2021-12-18 19:19:16,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-18 19:19:16,218 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 [2021-12-18 19:19:16,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 19:19:16,220 INFO L225 Difference]: With dead ends: 299 [2021-12-18 19:19:16,220 INFO L226 Difference]: Without dead ends: 299 [2021-12-18 19:19:16,221 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-18 19:19:16,221 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 [2021-12-18 19:19:16,221 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] [2021-12-18 19:19:16,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2021-12-18 19:19:16,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 289. [2021-12-18 19:19:16,230 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) [2021-12-18 19:19:16,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 330 transitions. [2021-12-18 19:19:16,232 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 330 transitions. Word has length 16 [2021-12-18 19:19:16,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 19:19:16,232 INFO L470 AbstractCegarLoop]: Abstraction has 289 states and 330 transitions. [2021-12-18 19:19:16,232 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) [2021-12-18 19:19:16,233 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 330 transitions. [2021-12-18 19:19:16,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-18 19:19:16,233 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 19:19:16,234 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 19:19:16,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-18 19:19:16,234 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)] === [2021-12-18 19:19:16,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 19:19:16,237 INFO L85 PathProgramCache]: Analyzing trace with hash 1322891007, now seen corresponding path program 1 times [2021-12-18 19:19:16,237 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 19:19:16,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075350673] [2021-12-18 19:19:16,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 19:19:16,237 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 19:19:16,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:19:16,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 19:19:16,279 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 19:19:16,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075350673] [2021-12-18 19:19:16,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075350673] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 19:19:16,280 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 19:19:16,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-18 19:19:16,280 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692359147] [2021-12-18 19:19:16,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 19:19:16,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-18 19:19:16,281 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 19:19:16,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-18 19:19:16,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-18 19:19:16,282 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) [2021-12-18 19:19:16,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 19:19:16,480 INFO L93 Difference]: Finished difference Result 288 states and 329 transitions. [2021-12-18 19:19:16,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-18 19:19:16,481 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 [2021-12-18 19:19:16,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 19:19:16,482 INFO L225 Difference]: With dead ends: 288 [2021-12-18 19:19:16,482 INFO L226 Difference]: Without dead ends: 288 [2021-12-18 19:19:16,482 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 [2021-12-18 19:19:16,483 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 [2021-12-18 19:19:16,483 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] [2021-12-18 19:19:16,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2021-12-18 19:19:16,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 288. [2021-12-18 19:19:16,489 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) [2021-12-18 19:19:16,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 329 transitions. [2021-12-18 19:19:16,490 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 329 transitions. Word has length 18 [2021-12-18 19:19:16,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 19:19:16,491 INFO L470 AbstractCegarLoop]: Abstraction has 288 states and 329 transitions. [2021-12-18 19:19:16,491 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) [2021-12-18 19:19:16,491 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 329 transitions. [2021-12-18 19:19:16,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-18 19:19:16,492 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 19:19:16,492 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 19:19:16,492 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-18 19:19:16,492 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)] === [2021-12-18 19:19:16,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 19:19:16,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1322891008, now seen corresponding path program 1 times [2021-12-18 19:19:16,493 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 19:19:16,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811836338] [2021-12-18 19:19:16,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 19:19:16,493 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 19:19:16,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:19:16,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 19:19:16,552 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 19:19:16,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811836338] [2021-12-18 19:19:16,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811836338] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 19:19:16,552 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 19:19:16,552 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-18 19:19:16,555 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604464076] [2021-12-18 19:19:16,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 19:19:16,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-18 19:19:16,556 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 19:19:16,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-18 19:19:16,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-18 19:19:16,557 INFO L87 Difference]: Start difference. First operand 288 states and 329 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) [2021-12-18 19:19:16,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 19:19:16,738 INFO L93 Difference]: Finished difference Result 287 states and 328 transitions. [2021-12-18 19:19:16,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 19:19:16,739 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 [2021-12-18 19:19:16,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 19:19:16,740 INFO L225 Difference]: With dead ends: 287 [2021-12-18 19:19:16,740 INFO L226 Difference]: Without dead ends: 287 [2021-12-18 19:19:16,741 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 [2021-12-18 19:19:16,741 INFO L933 BasicCegarLoop]: 276 mSDtfsCounter, 31 mSDsluCounter, 560 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 836 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-18 19:19:16,742 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 836 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-18 19:19:16,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2021-12-18 19:19:16,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2021-12-18 19:19:16,747 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) [2021-12-18 19:19:16,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 328 transitions. [2021-12-18 19:19:16,749 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 328 transitions. Word has length 18 [2021-12-18 19:19:16,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 19:19:16,749 INFO L470 AbstractCegarLoop]: Abstraction has 287 states and 328 transitions. [2021-12-18 19:19:16,750 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) [2021-12-18 19:19:16,750 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 328 transitions. [2021-12-18 19:19:16,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-12-18 19:19:16,750 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 19:19:16,750 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] [2021-12-18 19:19:16,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-18 19:19:16,751 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)] === [2021-12-18 19:19:16,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 19:19:16,751 INFO L85 PathProgramCache]: Analyzing trace with hash -12061856, now seen corresponding path program 1 times [2021-12-18 19:19:16,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 19:19:16,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786764842] [2021-12-18 19:19:16,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 19:19:16,752 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 19:19:16,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:19:16,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 19:19:16,943 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 19:19:16,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786764842] [2021-12-18 19:19:16,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786764842] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 19:19:16,944 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 19:19:16,944 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-18 19:19:16,944 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257982886] [2021-12-18 19:19:16,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 19:19:16,945 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-18 19:19:16,945 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 19:19:16,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-18 19:19:16,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-18 19:19:16,946 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) [2021-12-18 19:19:17,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 19:19:17,367 INFO L93 Difference]: Finished difference Result 326 states and 372 transitions. [2021-12-18 19:19:17,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-18 19:19:17,367 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 [2021-12-18 19:19:17,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 19:19:17,369 INFO L225 Difference]: With dead ends: 326 [2021-12-18 19:19:17,369 INFO L226 Difference]: Without dead ends: 326 [2021-12-18 19:19:17,369 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 [2021-12-18 19:19:17,370 INFO L933 BasicCegarLoop]: 272 mSDtfsCounter, 43 mSDsluCounter, 1743 mSDsCounter, 0 mSdLazyCounter, 590 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 2015 SdHoareTripleChecker+Invalid, 610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-18 19:19:17,370 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 2015 Invalid, 610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 590 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-18 19:19:17,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2021-12-18 19:19:17,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 307. [2021-12-18 19:19:17,376 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) [2021-12-18 19:19:17,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 356 transitions. [2021-12-18 19:19:17,378 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 356 transitions. Word has length 20 [2021-12-18 19:19:17,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 19:19:17,378 INFO L470 AbstractCegarLoop]: Abstraction has 307 states and 356 transitions. [2021-12-18 19:19:17,378 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) [2021-12-18 19:19:17,378 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 356 transitions. [2021-12-18 19:19:17,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-18 19:19:17,379 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 19:19:17,379 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] [2021-12-18 19:19:17,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-18 19:19:17,380 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)] === [2021-12-18 19:19:17,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 19:19:17,380 INFO L85 PathProgramCache]: Analyzing trace with hash 551710607, now seen corresponding path program 1 times [2021-12-18 19:19:17,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 19:19:17,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580894230] [2021-12-18 19:19:17,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 19:19:17,381 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 19:19:17,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:19:17,420 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-18 19:19:17,421 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 19:19:17,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580894230] [2021-12-18 19:19:17,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580894230] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 19:19:17,421 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 19:19:17,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-18 19:19:17,422 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478153130] [2021-12-18 19:19:17,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 19:19:17,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 19:19:17,422 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 19:19:17,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 19:19:17,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 19:19:17,423 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) [2021-12-18 19:19:17,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 19:19:17,525 INFO L93 Difference]: Finished difference Result 305 states and 354 transitions. [2021-12-18 19:19:17,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 19:19:17,526 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 [2021-12-18 19:19:17,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 19:19:17,527 INFO L225 Difference]: With dead ends: 305 [2021-12-18 19:19:17,528 INFO L226 Difference]: Without dead ends: 305 [2021-12-18 19:19:17,528 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 [2021-12-18 19:19:17,529 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 [2021-12-18 19:19:17,529 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] [2021-12-18 19:19:17,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2021-12-18 19:19:17,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 305. [2021-12-18 19:19:17,536 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) [2021-12-18 19:19:17,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 354 transitions. [2021-12-18 19:19:17,537 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 354 transitions. Word has length 27 [2021-12-18 19:19:17,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 19:19:17,538 INFO L470 AbstractCegarLoop]: Abstraction has 305 states and 354 transitions. [2021-12-18 19:19:17,538 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) [2021-12-18 19:19:17,538 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 354 transitions. [2021-12-18 19:19:17,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-12-18 19:19:17,539 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 19:19:17,539 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] [2021-12-18 19:19:17,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-18 19:19:17,540 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)] === [2021-12-18 19:19:17,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 19:19:17,540 INFO L85 PathProgramCache]: Analyzing trace with hash 67060467, now seen corresponding path program 1 times [2021-12-18 19:19:17,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 19:19:17,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967750958] [2021-12-18 19:19:17,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 19:19:17,541 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 19:19:17,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:19:17,622 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-18 19:19:17,623 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 19:19:17,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967750958] [2021-12-18 19:19:17,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967750958] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 19:19:17,623 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 19:19:17,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-18 19:19:17,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086086247] [2021-12-18 19:19:17,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 19:19:17,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 19:19:17,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 19:19:17,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 19:19:17,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-18 19:19:17,625 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) [2021-12-18 19:19:17,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 19:19:17,939 INFO L93 Difference]: Finished difference Result 304 states and 353 transitions. [2021-12-18 19:19:17,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-18 19:19:17,939 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 [2021-12-18 19:19:17,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 19:19:17,941 INFO L225 Difference]: With dead ends: 304 [2021-12-18 19:19:17,941 INFO L226 Difference]: Without dead ends: 304 [2021-12-18 19:19:17,941 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 [2021-12-18 19:19:17,942 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 [2021-12-18 19:19:17,942 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] [2021-12-18 19:19:17,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2021-12-18 19:19:17,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 303. [2021-12-18 19:19:17,948 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) [2021-12-18 19:19:17,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 352 transitions. [2021-12-18 19:19:17,949 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 352 transitions. Word has length 31 [2021-12-18 19:19:17,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 19:19:17,950 INFO L470 AbstractCegarLoop]: Abstraction has 303 states and 352 transitions. [2021-12-18 19:19:17,950 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) [2021-12-18 19:19:17,950 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 352 transitions. [2021-12-18 19:19:17,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-12-18 19:19:17,951 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 19:19:17,951 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] [2021-12-18 19:19:17,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-18 19:19:17,951 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)] === [2021-12-18 19:19:17,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 19:19:17,952 INFO L85 PathProgramCache]: Analyzing trace with hash 67060466, now seen corresponding path program 1 times [2021-12-18 19:19:17,952 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 19:19:17,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463490097] [2021-12-18 19:19:17,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 19:19:17,953 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 19:19:17,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:19:18,019 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-18 19:19:18,019 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 19:19:18,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463490097] [2021-12-18 19:19:18,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463490097] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 19:19:18,020 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 19:19:18,020 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-18 19:19:18,020 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696273237] [2021-12-18 19:19:18,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 19:19:18,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-18 19:19:18,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 19:19:18,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-18 19:19:18,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-18 19:19:18,022 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) [2021-12-18 19:19:18,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 19:19:18,254 INFO L93 Difference]: Finished difference Result 301 states and 350 transitions. [2021-12-18 19:19:18,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-18 19:19:18,254 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 [2021-12-18 19:19:18,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 19:19:18,256 INFO L225 Difference]: With dead ends: 301 [2021-12-18 19:19:18,256 INFO L226 Difference]: Without dead ends: 301 [2021-12-18 19:19:18,256 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 [2021-12-18 19:19:18,257 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 [2021-12-18 19:19:18,257 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] [2021-12-18 19:19:18,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2021-12-18 19:19:18,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 301. [2021-12-18 19:19:18,263 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) [2021-12-18 19:19:18,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 350 transitions. [2021-12-18 19:19:18,265 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 350 transitions. Word has length 31 [2021-12-18 19:19:18,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 19:19:18,265 INFO L470 AbstractCegarLoop]: Abstraction has 301 states and 350 transitions. [2021-12-18 19:19:18,266 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) [2021-12-18 19:19:18,266 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 350 transitions. [2021-12-18 19:19:18,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-18 19:19:18,273 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 19:19:18,274 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] [2021-12-18 19:19:18,274 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-18 19:19:18,274 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)] === [2021-12-18 19:19:18,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 19:19:18,275 INFO L85 PathProgramCache]: Analyzing trace with hash 20600531, now seen corresponding path program 1 times [2021-12-18 19:19:18,275 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 19:19:18,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850275979] [2021-12-18 19:19:18,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 19:19:18,275 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 19:19:18,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:19:18,341 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-18 19:19:18,341 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 19:19:18,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850275979] [2021-12-18 19:19:18,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850275979] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 19:19:18,341 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 19:19:18,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-18 19:19:18,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995370037] [2021-12-18 19:19:18,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 19:19:18,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-18 19:19:18,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 19:19:18,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-18 19:19:18,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-18 19:19:18,345 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) [2021-12-18 19:19:18,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 19:19:18,496 INFO L93 Difference]: Finished difference Result 300 states and 349 transitions. [2021-12-18 19:19:18,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 19:19:18,496 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 [2021-12-18 19:19:18,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 19:19:18,500 INFO L225 Difference]: With dead ends: 300 [2021-12-18 19:19:18,500 INFO L226 Difference]: Without dead ends: 300 [2021-12-18 19:19:18,501 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 [2021-12-18 19:19:18,501 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, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 19:19:18,501 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 801 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 19:19:18,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2021-12-18 19:19:18,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 300. [2021-12-18 19:19:18,510 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) [2021-12-18 19:19:18,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 349 transitions. [2021-12-18 19:19:18,512 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 349 transitions. Word has length 33 [2021-12-18 19:19:18,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 19:19:18,513 INFO L470 AbstractCegarLoop]: Abstraction has 300 states and 349 transitions. [2021-12-18 19:19:18,513 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) [2021-12-18 19:19:18,513 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 349 transitions. [2021-12-18 19:19:18,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-18 19:19:18,514 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 19:19:18,514 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] [2021-12-18 19:19:18,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-18 19:19:18,515 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)] === [2021-12-18 19:19:18,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 19:19:18,515 INFO L85 PathProgramCache]: Analyzing trace with hash 20600532, now seen corresponding path program 1 times [2021-12-18 19:19:18,515 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 19:19:18,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349166915] [2021-12-18 19:19:18,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 19:19:18,516 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 19:19:18,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:19:18,621 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-18 19:19:18,621 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 19:19:18,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349166915] [2021-12-18 19:19:18,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349166915] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 19:19:18,621 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 19:19:18,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-18 19:19:18,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328631870] [2021-12-18 19:19:18,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 19:19:18,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 19:19:18,622 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 19:19:18,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 19:19:18,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-18 19:19:18,623 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) [2021-12-18 19:19:18,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 19:19:18,755 INFO L93 Difference]: Finished difference Result 299 states and 348 transitions. [2021-12-18 19:19:18,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 19:19:18,756 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 [2021-12-18 19:19:18,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 19:19:18,757 INFO L225 Difference]: With dead ends: 299 [2021-12-18 19:19:18,758 INFO L226 Difference]: Without dead ends: 299 [2021-12-18 19:19:18,759 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 [2021-12-18 19:19:18,760 INFO L933 BasicCegarLoop]: 270 mSDtfsCounter, 50 mSDsluCounter, 632 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 902 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 19:19:18,761 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 902 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 19:19:18,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2021-12-18 19:19:18,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 299. [2021-12-18 19:19:18,767 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) [2021-12-18 19:19:18,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 348 transitions. [2021-12-18 19:19:18,769 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 348 transitions. Word has length 33 [2021-12-18 19:19:18,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 19:19:18,769 INFO L470 AbstractCegarLoop]: Abstraction has 299 states and 348 transitions. [2021-12-18 19:19:18,769 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) [2021-12-18 19:19:18,770 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 348 transitions. [2021-12-18 19:19:18,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-12-18 19:19:18,770 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 19:19:18,770 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] [2021-12-18 19:19:18,770 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-18 19:19:18,771 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)] === [2021-12-18 19:19:18,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 19:19:18,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1677723852, now seen corresponding path program 1 times [2021-12-18 19:19:18,771 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 19:19:18,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449539402] [2021-12-18 19:19:18,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 19:19:18,772 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 19:19:18,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:19:18,906 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-18 19:19:18,906 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 19:19:18,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449539402] [2021-12-18 19:19:18,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449539402] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 19:19:18,907 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 19:19:18,907 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-18 19:19:18,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103266255] [2021-12-18 19:19:18,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 19:19:18,908 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-18 19:19:18,908 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 19:19:18,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-18 19:19:18,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-18 19:19:18,909 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) [2021-12-18 19:19:19,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 19:19:19,243 INFO L93 Difference]: Finished difference Result 313 states and 363 transitions. [2021-12-18 19:19:19,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-18 19:19:19,243 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 [2021-12-18 19:19:19,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 19:19:19,245 INFO L225 Difference]: With dead ends: 313 [2021-12-18 19:19:19,245 INFO L226 Difference]: Without dead ends: 313 [2021-12-18 19:19:19,245 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 [2021-12-18 19:19:19,245 INFO L933 BasicCegarLoop]: 271 mSDtfsCounter, 22 mSDsluCounter, 1552 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 1823 SdHoareTripleChecker+Invalid, 447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-18 19:19:19,246 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 1823 Invalid, 447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 430 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-18 19:19:19,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2021-12-18 19:19:19,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 312. [2021-12-18 19:19:19,254 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) [2021-12-18 19:19:19,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 362 transitions. [2021-12-18 19:19:19,255 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 362 transitions. Word has length 35 [2021-12-18 19:19:19,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 19:19:19,256 INFO L470 AbstractCegarLoop]: Abstraction has 312 states and 362 transitions. [2021-12-18 19:19:19,256 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) [2021-12-18 19:19:19,256 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 362 transitions. [2021-12-18 19:19:19,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-12-18 19:19:19,257 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 19:19:19,257 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] [2021-12-18 19:19:19,257 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-18 19:19:19,257 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)] === [2021-12-18 19:19:19,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 19:19:19,258 INFO L85 PathProgramCache]: Analyzing trace with hash 1451018694, now seen corresponding path program 1 times [2021-12-18 19:19:19,258 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 19:19:19,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755902049] [2021-12-18 19:19:19,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 19:19:19,259 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 19:19:19,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:19:19,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-18 19:19:19,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:19:19,586 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-18 19:19:19,587 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 19:19:19,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755902049] [2021-12-18 19:19:19,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755902049] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 19:19:19,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2018287968] [2021-12-18 19:19:19,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 19:19:19,587 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 19:19:19,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 19:19:19,589 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) [2021-12-18 19:19:19,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-18 19:19:19,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:19:19,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 60 conjunts are in the unsatisfiable core [2021-12-18 19:19:19,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 19:19:20,033 INFO L388 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 [2021-12-18 19:19:20,215 INFO L354 Elim1Store]: treesize reduction 30, result has 37.5 percent of original size [2021-12-18 19:19:20,216 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2021-12-18 19:19:20,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:19:20,290 INFO L388 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 [2021-12-18 19:19:20,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:19:20,343 INFO L388 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 [2021-12-18 19:19:20,488 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:19:20,490 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 19:19:20,490 INFO L388 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 17 treesize of output 12 [2021-12-18 19:19:20,522 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-18 19:19:20,522 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 19:19:21,016 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 19:19:21,017 INFO L388 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 [2021-12-18 19:19:21,029 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 19:19:21,030 INFO L388 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 42 treesize of output 42 [2021-12-18 19:19:21,089 INFO L354 Elim1Store]: treesize reduction 5, result has 90.9 percent of original size [2021-12-18 19:19:21,090 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 64 treesize of output 103 [2021-12-18 19:19:21,118 INFO L388 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 55 treesize of output 45 [2021-12-18 19:19:21,681 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 19:19:21,681 INFO L388 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 [2021-12-18 19:19:21,684 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:19:21,691 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 19:19:21,692 INFO L388 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 [2021-12-18 19:19:22,156 INFO L354 Elim1Store]: treesize reduction 10, result has 60.0 percent of original size [2021-12-18 19:19:22,156 INFO L388 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 30 treesize of output 38 [2021-12-18 19:19:22,507 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-18 19:19:22,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2018287968] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 19:19:22,507 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-18 19:19:22,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 14, 13] total 37 [2021-12-18 19:19:22,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645818451] [2021-12-18 19:19:22,508 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-18 19:19:22,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2021-12-18 19:19:22,509 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 19:19:22,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-12-18 19:19:22,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=1297, Unknown=3, NotChecked=0, Total=1406 [2021-12-18 19:19:22,510 INFO L87 Difference]: Start difference. First operand 312 states and 362 transitions. Second operand has 38 states, 32 states have (on average 2.75) internal successors, (88), 32 states have internal predecessors, (88), 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) [2021-12-18 19:19:24,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 19:19:24,457 INFO L93 Difference]: Finished difference Result 327 states and 378 transitions. [2021-12-18 19:19:24,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-12-18 19:19:24,458 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 32 states have (on average 2.75) internal successors, (88), 32 states have internal predecessors, (88), 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 [2021-12-18 19:19:24,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 19:19:24,459 INFO L225 Difference]: With dead ends: 327 [2021-12-18 19:19:24,459 INFO L226 Difference]: Without dead ends: 327 [2021-12-18 19:19:24,461 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 77 SyntacticMatches, 13 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 611 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=428, Invalid=2991, Unknown=3, NotChecked=0, Total=3422 [2021-12-18 19:19:24,461 INFO L933 BasicCegarLoop]: 236 mSDtfsCounter, 190 mSDsluCounter, 3254 mSDsCounter, 0 mSdLazyCounter, 2001 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 3490 SdHoareTripleChecker+Invalid, 3285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 2001 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1234 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-18 19:19:24,461 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [194 Valid, 3490 Invalid, 3285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 2001 Invalid, 0 Unknown, 1234 Unchecked, 0.9s Time] [2021-12-18 19:19:24,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2021-12-18 19:19:24,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 316. [2021-12-18 19:19:24,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 194 states have (on average 1.5876288659793814) internal successors, (308), 290 states have internal predecessors, (308), 33 states have call successors, (33), 13 states have call predecessors, (33), 10 states have return successors, (25), 15 states have call predecessors, (25), 19 states have call successors, (25) [2021-12-18 19:19:24,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 366 transitions. [2021-12-18 19:19:24,471 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 366 transitions. Word has length 51 [2021-12-18 19:19:24,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 19:19:24,471 INFO L470 AbstractCegarLoop]: Abstraction has 316 states and 366 transitions. [2021-12-18 19:19:24,471 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 32 states have (on average 2.75) internal successors, (88), 32 states have internal predecessors, (88), 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) [2021-12-18 19:19:24,472 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 366 transitions. [2021-12-18 19:19:24,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-12-18 19:19:24,473 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 19:19:24,473 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] [2021-12-18 19:19:24,502 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-18 19:19:24,695 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 [2021-12-18 19:19:24,695 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)] === [2021-12-18 19:19:24,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 19:19:24,696 INFO L85 PathProgramCache]: Analyzing trace with hash 1451018695, now seen corresponding path program 1 times [2021-12-18 19:19:24,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 19:19:24,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079596909] [2021-12-18 19:19:24,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 19:19:24,696 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 19:19:24,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:19:24,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-18 19:19:24,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:19:25,100 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-18 19:19:25,100 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 19:19:25,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079596909] [2021-12-18 19:19:25,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079596909] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 19:19:25,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [95716824] [2021-12-18 19:19:25,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 19:19:25,100 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 19:19:25,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 19:19:25,104 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) [2021-12-18 19:19:25,105 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-18 19:19:25,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:19:25,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 93 conjunts are in the unsatisfiable core [2021-12-18 19:19:25,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 19:19:25,336 INFO L388 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 [2021-12-18 19:19:25,480 INFO L388 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 [2021-12-18 19:19:25,484 INFO L388 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 [2021-12-18 19:19:25,633 INFO L354 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2021-12-18 19:19:25,634 INFO L388 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 [2021-12-18 19:19:25,655 INFO L354 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2021-12-18 19:19:25,655 INFO L388 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 15 treesize of output 15 [2021-12-18 19:19:25,728 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-18 19:19:25,728 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 24 treesize of output 28 [2021-12-18 19:19:25,735 INFO L388 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 14 treesize of output 10 [2021-12-18 19:19:25,783 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-18 19:19:25,784 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 14 treesize of output 20 [2021-12-18 19:19:25,874 INFO L354 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2021-12-18 19:19:25,875 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 44 treesize of output 43 [2021-12-18 19:19:25,926 INFO L354 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2021-12-18 19:19:25,927 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 23 treesize of output 26 [2021-12-18 19:19:26,305 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 19:19:26,306 INFO L388 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 26 treesize of output 22 [2021-12-18 19:19:26,312 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-18 19:19:26,312 INFO L388 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 22 treesize of output 10 [2021-12-18 19:19:26,514 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-18 19:19:26,514 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 19:19:26,778 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 19:19:26,778 INFO L388 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 71 [2021-12-18 19:19:26,782 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 19:19:26,782 INFO L388 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 62 [2021-12-18 19:19:26,825 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2021-12-18 19:19:26,893 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2021-12-18 19:19:26,930 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2021-12-18 19:19:27,138 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2021-12-18 19:19:27,226 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2021-12-18 19:19:27,264 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2021-12-18 19:19:29,003 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 19:19:29,004 INFO L388 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 102 treesize of output 94 [2021-12-18 19:19:29,009 INFO L388 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 405 treesize of output 387 [2021-12-18 19:19:29,015 INFO L388 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 567 treesize of output 503 [2021-12-18 19:19:29,026 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 19:19:29,027 INFO L388 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 503 treesize of output 431 [2021-12-18 19:19:29,035 INFO L388 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 569 treesize of output 525 [2021-12-18 19:19:29,048 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-18 19:19:29,048 INFO L388 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 531 treesize of output 512 [2021-12-18 19:19:29,059 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-18 19:19:29,059 INFO L388 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 518 treesize of output 486 [2021-12-18 19:19:29,071 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-18 19:19:29,072 INFO L388 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 13 treesize of output 12 [2021-12-18 19:19:30,525 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 19:19:30,526 INFO L388 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 99 treesize of output 91 [2021-12-18 19:19:30,531 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 19:19:30,531 INFO L388 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 91 treesize of output 75 [2021-12-18 19:19:30,544 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 19:19:30,545 INFO L388 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 113 treesize of output 112 [2021-12-18 19:19:30,554 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 19:19:30,554 INFO L388 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 178 treesize of output 169 [2021-12-18 19:19:30,560 INFO L388 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 175 treesize of output 167 [2021-12-18 19:19:30,570 INFO L388 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 173 treesize of output 163 [2021-12-18 19:19:31,284 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-18 19:19:31,285 INFO L388 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 13 treesize of output 12 [2021-12-18 19:19:32,176 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:19:32,266 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-18 19:19:32,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [95716824] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 19:19:32,266 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-18 19:19:32,267 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 19, 17] total 45 [2021-12-18 19:19:32,267 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098310380] [2021-12-18 19:19:32,267 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-18 19:19:32,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2021-12-18 19:19:32,268 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 19:19:32,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-12-18 19:19:32,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=1893, Unknown=25, NotChecked=0, Total=2070 [2021-12-18 19:19:32,270 INFO L87 Difference]: Start difference. First operand 316 states and 366 transitions. Second operand has 46 states, 41 states have (on average 2.268292682926829) internal successors, (93), 40 states have internal predecessors, (93), 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) [2021-12-18 19:19:34,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 19:19:34,848 INFO L93 Difference]: Finished difference Result 320 states and 371 transitions. [2021-12-18 19:19:34,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-18 19:19:34,849 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 41 states have (on average 2.268292682926829) internal successors, (93), 40 states have internal predecessors, (93), 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 [2021-12-18 19:19:34,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 19:19:34,850 INFO L225 Difference]: With dead ends: 320 [2021-12-18 19:19:34,850 INFO L226 Difference]: Without dead ends: 320 [2021-12-18 19:19:34,851 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 72 SyntacticMatches, 6 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 673 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=510, Invalid=3497, Unknown=25, NotChecked=0, Total=4032 [2021-12-18 19:19:34,852 INFO L933 BasicCegarLoop]: 238 mSDtfsCounter, 169 mSDsluCounter, 3630 mSDsCounter, 0 mSdLazyCounter, 2421 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 3868 SdHoareTripleChecker+Invalid, 4274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 2421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1794 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-18 19:19:34,852 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [173 Valid, 3868 Invalid, 4274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 2421 Invalid, 0 Unknown, 1794 Unchecked, 1.3s Time] [2021-12-18 19:19:34,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2021-12-18 19:19:34,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 315. [2021-12-18 19:19:34,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 194 states have (on average 1.5824742268041236) internal successors, (307), 289 states have internal predecessors, (307), 33 states have call successors, (33), 13 states have call predecessors, (33), 10 states have return successors, (25), 15 states have call predecessors, (25), 19 states have call successors, (25) [2021-12-18 19:19:34,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 365 transitions. [2021-12-18 19:19:34,858 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 365 transitions. Word has length 51 [2021-12-18 19:19:34,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 19:19:34,858 INFO L470 AbstractCegarLoop]: Abstraction has 315 states and 365 transitions. [2021-12-18 19:19:34,858 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 41 states have (on average 2.268292682926829) internal successors, (93), 40 states have internal predecessors, (93), 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) [2021-12-18 19:19:34,859 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 365 transitions. [2021-12-18 19:19:34,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-12-18 19:19:34,861 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 19:19:34,861 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] [2021-12-18 19:19:34,890 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-18 19:19:35,075 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 [2021-12-18 19:19:35,075 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)] === [2021-12-18 19:19:35,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 19:19:35,076 INFO L85 PathProgramCache]: Analyzing trace with hash -470108245, now seen corresponding path program 1 times [2021-12-18 19:19:35,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 19:19:35,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219789890] [2021-12-18 19:19:35,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 19:19:35,076 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 19:19:35,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:19:35,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-18 19:19:35,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:19:35,177 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-18 19:19:35,177 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 19:19:35,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219789890] [2021-12-18 19:19:35,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219789890] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 19:19:35,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [576423271] [2021-12-18 19:19:35,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 19:19:35,178 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 19:19:35,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 19:19:35,179 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) [2021-12-18 19:19:35,223 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-18 19:19:35,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:19:35,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 524 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-18 19:19:35,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 19:19:35,460 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-18 19:19:35,460 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 19:19:35,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [576423271] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 19:19:35,460 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 19:19:35,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 6 [2021-12-18 19:19:35,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194435179] [2021-12-18 19:19:35,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 19:19:35,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-18 19:19:35,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 19:19:35,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-18 19:19:35,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-18 19:19:35,463 INFO L87 Difference]: Start difference. First operand 315 states and 365 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) [2021-12-18 19:19:35,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 19:19:35,491 INFO L93 Difference]: Finished difference Result 298 states and 334 transitions. [2021-12-18 19:19:35,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 19:19:35,492 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 [2021-12-18 19:19:35,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 19:19:35,493 INFO L225 Difference]: With dead ends: 298 [2021-12-18 19:19:35,493 INFO L226 Difference]: Without dead ends: 298 [2021-12-18 19:19:35,494 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 [2021-12-18 19:19:35,494 INFO L933 BasicCegarLoop]: 277 mSDtfsCounter, 28 mSDsluCounter, 808 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 1085 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 [2021-12-18 19:19:35,495 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 1085 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 19:19:35,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2021-12-18 19:19:35,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 296. [2021-12-18 19:19:35,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 180 states have (on average 1.5944444444444446) internal successors, (287), 275 states have internal predecessors, (287), 29 states have call successors, (29), 11 states have call predecessors, (29), 9 states have return successors, (16), 12 states have call predecessors, (16), 15 states have call successors, (16) [2021-12-18 19:19:35,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 332 transitions. [2021-12-18 19:19:35,502 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 332 transitions. Word has length 54 [2021-12-18 19:19:35,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 19:19:35,502 INFO L470 AbstractCegarLoop]: Abstraction has 296 states and 332 transitions. [2021-12-18 19:19:35,502 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) [2021-12-18 19:19:35,502 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 332 transitions. [2021-12-18 19:19:35,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-12-18 19:19:35,503 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 19:19:35,503 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] [2021-12-18 19:19:35,532 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-18 19:19:35,725 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 [2021-12-18 19:19:35,725 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)] === [2021-12-18 19:19:35,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 19:19:35,726 INFO L85 PathProgramCache]: Analyzing trace with hash -996489836, now seen corresponding path program 1 times [2021-12-18 19:19:35,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 19:19:35,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872204155] [2021-12-18 19:19:35,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 19:19:35,726 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 19:19:35,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:19:35,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-18 19:19:35,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:19:35,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-18 19:19:35,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:19:35,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 19:19:35,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:19:36,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-18 19:19:36,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:19:36,235 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-18 19:19:36,235 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 19:19:36,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872204155] [2021-12-18 19:19:36,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872204155] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 19:19:36,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [155271362] [2021-12-18 19:19:36,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 19:19:36,236 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 19:19:36,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 19:19:36,237 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) [2021-12-18 19:19:36,238 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-18 19:19:36,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:19:36,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 550 conjuncts, 64 conjunts are in the unsatisfiable core [2021-12-18 19:19:36,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 19:19:36,572 INFO L388 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 [2021-12-18 19:19:37,004 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-18 19:19:37,004 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 19:19:37,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [155271362] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 19:19:37,485 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-18 19:19:37,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 20] total 31 [2021-12-18 19:19:37,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969849046] [2021-12-18 19:19:37,485 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-18 19:19:37,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-12-18 19:19:37,486 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 19:19:37,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-12-18 19:19:37,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=876, Unknown=30, NotChecked=0, Total=992 [2021-12-18 19:19:37,487 INFO L87 Difference]: Start difference. First operand 296 states and 332 transitions. Second operand has 31 states, 28 states have (on average 2.642857142857143) internal successors, (74), 27 states have internal predecessors, (74), 5 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2021-12-18 19:19:38,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 19:19:38,673 INFO L93 Difference]: Finished difference Result 309 states and 348 transitions. [2021-12-18 19:19:38,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-18 19:19:38,680 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 28 states have (on average 2.642857142857143) internal successors, (74), 27 states have internal predecessors, (74), 5 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) Word has length 64 [2021-12-18 19:19:38,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 19:19:38,681 INFO L225 Difference]: With dead ends: 309 [2021-12-18 19:19:38,681 INFO L226 Difference]: Without dead ends: 309 [2021-12-18 19:19:38,682 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 67 SyntacticMatches, 5 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=191, Invalid=1834, Unknown=45, NotChecked=0, Total=2070 [2021-12-18 19:19:38,683 INFO L933 BasicCegarLoop]: 233 mSDtfsCounter, 66 mSDsluCounter, 3679 mSDsCounter, 0 mSdLazyCounter, 1772 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 3912 SdHoareTripleChecker+Invalid, 2513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1772 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 708 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-18 19:19:38,684 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 3912 Invalid, 2513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1772 Invalid, 0 Unknown, 708 Unchecked, 0.8s Time] [2021-12-18 19:19:38,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2021-12-18 19:19:38,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 300. [2021-12-18 19:19:38,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 183 states have (on average 1.5846994535519126) internal successors, (290), 279 states have internal predecessors, (290), 29 states have call successors, (29), 11 states have call predecessors, (29), 10 states have return successors, (17), 12 states have call predecessors, (17), 15 states have call successors, (17) [2021-12-18 19:19:38,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 336 transitions. [2021-12-18 19:19:38,696 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 336 transitions. Word has length 64 [2021-12-18 19:19:38,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 19:19:38,696 INFO L470 AbstractCegarLoop]: Abstraction has 300 states and 336 transitions. [2021-12-18 19:19:38,697 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 28 states have (on average 2.642857142857143) internal successors, (74), 27 states have internal predecessors, (74), 5 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2021-12-18 19:19:38,697 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 336 transitions. [2021-12-18 19:19:38,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-18 19:19:38,697 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 19:19:38,697 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] [2021-12-18 19:19:38,726 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-18 19:19:38,926 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 [2021-12-18 19:19:38,926 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)] === [2021-12-18 19:19:38,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 19:19:38,927 INFO L85 PathProgramCache]: Analyzing trace with hash 2033150353, now seen corresponding path program 1 times [2021-12-18 19:19:38,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 19:19:38,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078374019] [2021-12-18 19:19:38,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 19:19:38,927 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 19:19:38,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:19:39,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-18 19:19:39,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:19:39,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-18 19:19:39,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:19:43,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 19:19:43,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:19:43,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-18 19:19:43,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:19:44,576 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 7 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-18 19:19:44,577 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 19:19:44,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078374019] [2021-12-18 19:19:44,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078374019] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 19:19:44,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [825326459] [2021-12-18 19:19:44,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 19:19:44,578 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 19:19:44,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 19:19:44,580 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) [2021-12-18 19:19:44,582 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-18 19:19:44,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:19:44,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 49 conjunts are in the unsatisfiable core [2021-12-18 19:19:44,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 19:19:44,927 INFO L388 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 [2021-12-18 19:19:45,243 INFO L388 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 10 treesize of output 8 [2021-12-18 19:20:21,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:20:21,866 INFO L354 Elim1Store]: treesize reduction 70, result has 28.6 percent of original size [2021-12-18 19:20:21,866 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 5 case distinctions, treesize of input 30 treesize of output 43 [2021-12-18 19:20:21,878 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-18 19:20:21,878 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 19:20:22,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [825326459] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 19:20:22,117 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-18 19:20:22,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 19] total 42 [2021-12-18 19:20:22,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501628616] [2021-12-18 19:20:22,118 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-18 19:20:22,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2021-12-18 19:20:22,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 19:20:22,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-12-18 19:20:22,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=1682, Unknown=18, NotChecked=0, Total=1892 [2021-12-18 19:20:22,120 INFO L87 Difference]: Start difference. First operand 300 states and 336 transitions. Second operand has 43 states, 38 states have (on average 2.6578947368421053) internal successors, (101), 39 states have internal predecessors, (101), 9 states have call successors, (11), 3 states have call predecessors, (11), 7 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2021-12-18 19:21:11,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 19:21:11,213 INFO L93 Difference]: Finished difference Result 333 states and 373 transitions. [2021-12-18 19:21:11,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-18 19:21:11,213 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 38 states have (on average 2.6578947368421053) internal successors, (101), 39 states have internal predecessors, (101), 9 states have call successors, (11), 3 states have call predecessors, (11), 7 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) Word has length 65 [2021-12-18 19:21:11,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 19:21:11,215 INFO L225 Difference]: With dead ends: 333 [2021-12-18 19:21:11,215 INFO L226 Difference]: Without dead ends: 329 [2021-12-18 19:21:11,216 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 58 SyntacticMatches, 5 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 744 ImplicationChecksByTransitivity, 84.2s TimeCoverageRelationStatistics Valid=394, Invalid=3348, Unknown=40, NotChecked=0, Total=3782 [2021-12-18 19:21:11,216 INFO L933 BasicCegarLoop]: 219 mSDtfsCounter, 179 mSDsluCounter, 2951 mSDsCounter, 0 mSdLazyCounter, 3134 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 3170 SdHoareTripleChecker+Invalid, 4491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 3134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1304 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-12-18 19:21:11,217 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [179 Valid, 3170 Invalid, 4491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 3134 Invalid, 0 Unknown, 1304 Unchecked, 2.4s Time] [2021-12-18 19:21:11,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2021-12-18 19:21:11,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 323. [2021-12-18 19:21:11,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 204 states have (on average 1.5392156862745099) internal successors, (314), 297 states have internal predecessors, (314), 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) [2021-12-18 19:21:11,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 362 transitions. [2021-12-18 19:21:11,224 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 362 transitions. Word has length 65 [2021-12-18 19:21:11,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 19:21:11,225 INFO L470 AbstractCegarLoop]: Abstraction has 323 states and 362 transitions. [2021-12-18 19:21:11,225 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 38 states have (on average 2.6578947368421053) internal successors, (101), 39 states have internal predecessors, (101), 9 states have call successors, (11), 3 states have call predecessors, (11), 7 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2021-12-18 19:21:11,225 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 362 transitions. [2021-12-18 19:21:11,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-18 19:21:11,226 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 19:21:11,226 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] [2021-12-18 19:21:11,255 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-18 19:21:11,451 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 [2021-12-18 19:21:11,451 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)] === [2021-12-18 19:21:11,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 19:21:11,452 INFO L85 PathProgramCache]: Analyzing trace with hash 2033150354, now seen corresponding path program 1 times [2021-12-18 19:21:11,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 19:21:11,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549724558] [2021-12-18 19:21:11,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 19:21:11,452 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 19:21:11,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:21:11,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-18 19:21:11,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:21:11,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-18 19:21:11,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:21:24,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 19:21:24,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:21:24,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-18 19:21:24,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:21:24,878 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-18 19:21:24,878 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 19:21:24,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549724558] [2021-12-18 19:21:24,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549724558] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 19:21:24,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [34390011] [2021-12-18 19:21:24,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 19:21:24,878 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 19:21:24,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 19:21:24,880 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 19:21:24,883 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-18 19:21:25,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:21:25,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 99 conjunts are in the unsatisfiable core [2021-12-18 19:21:25,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 19:21:25,122 INFO L388 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 [2021-12-18 19:21:25,287 INFO L388 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 [2021-12-18 19:21:25,290 INFO L388 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 [2021-12-18 19:21:25,413 INFO L388 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 [2021-12-18 19:21:25,715 INFO L388 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 [2021-12-18 19:21:25,868 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-12-18 19:21:25,868 INFO L388 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 [2021-12-18 19:21:25,872 INFO L388 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 [2021-12-18 19:21:26,509 INFO L388 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 44 treesize of output 32 [2021-12-18 19:21:27,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:21:27,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:21:27,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:21:27,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:21:27,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:21:27,279 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-18 19:21:27,279 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 28 [2021-12-18 19:21:27,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:21:27,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:21:27,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:21:27,305 INFO L354 Elim1Store]: treesize reduction 21, result has 36.4 percent of original size [2021-12-18 19:21:27,305 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 38 treesize of output 41 [2021-12-18 19:21:27,346 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 19:21:27,346 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 19:21:28,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [34390011] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 19:21:28,193 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-18 19:21:28,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 23] total 41 [2021-12-18 19:21:28,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014661940] [2021-12-18 19:21:28,194 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-18 19:21:28,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2021-12-18 19:21:28,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 19:21:28,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-12-18 19:21:28,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=1688, Unknown=19, NotChecked=0, Total=1892 [2021-12-18 19:21:28,195 INFO L87 Difference]: Start difference. First operand 323 states and 362 transitions. Second operand has 42 states, 37 states have (on average 2.7837837837837838) internal successors, (103), 36 states have internal predecessors, (103), 9 states have call successors, (11), 4 states have call predecessors, (11), 6 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2021-12-18 19:21:30,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 19:21:30,541 INFO L93 Difference]: Finished difference Result 354 states and 395 transitions. [2021-12-18 19:21:30,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-18 19:21:30,541 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 37 states have (on average 2.7837837837837838) internal successors, (103), 36 states have internal predecessors, (103), 9 states have call successors, (11), 4 states have call predecessors, (11), 6 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) Word has length 65 [2021-12-18 19:21:30,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 19:21:30,543 INFO L225 Difference]: With dead ends: 354 [2021-12-18 19:21:30,543 INFO L226 Difference]: Without dead ends: 354 [2021-12-18 19:21:30,544 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 50 SyntacticMatches, 6 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 884 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=307, Invalid=2966, Unknown=33, NotChecked=0, Total=3306 [2021-12-18 19:21:30,544 INFO L933 BasicCegarLoop]: 215 mSDtfsCounter, 148 mSDsluCounter, 1495 mSDsCounter, 0 mSdLazyCounter, 2029 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 1710 SdHoareTripleChecker+Invalid, 2694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 2029 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 640 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-18 19:21:30,545 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [148 Valid, 1710 Invalid, 2694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 2029 Invalid, 0 Unknown, 640 Unchecked, 1.1s Time] [2021-12-18 19:21:30,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2021-12-18 19:21:30,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 323. [2021-12-18 19:21:30,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 204 states have (on average 1.5294117647058822) internal successors, (312), 297 states have internal predecessors, (312), 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) [2021-12-18 19:21:30,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 360 transitions. [2021-12-18 19:21:30,552 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 360 transitions. Word has length 65 [2021-12-18 19:21:30,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 19:21:30,552 INFO L470 AbstractCegarLoop]: Abstraction has 323 states and 360 transitions. [2021-12-18 19:21:30,552 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 37 states have (on average 2.7837837837837838) internal successors, (103), 36 states have internal predecessors, (103), 9 states have call successors, (11), 4 states have call predecessors, (11), 6 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2021-12-18 19:21:30,553 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 360 transitions. [2021-12-18 19:21:30,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-12-18 19:21:30,553 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 19:21:30,553 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, 1, 1] [2021-12-18 19:21:30,582 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-18 19:21:30,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 19:21:30,771 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting dll_insert_masterErr14REQUIRES_VIOLATION === [dll_insert_masterErr0REQUIRES_VIOLATION, dll_insert_masterErr1REQUIRES_VIOLATION, dll_insert_masterErr2REQUIRES_VIOLATION (and 95 more)] === [2021-12-18 19:21:30,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 19:21:30,772 INFO L85 PathProgramCache]: Analyzing trace with hash -352630062, now seen corresponding path program 1 times [2021-12-18 19:21:30,772 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 19:21:30,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685340299] [2021-12-18 19:21:30,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 19:21:30,772 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 19:21:30,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:21:30,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-18 19:21:30,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:21:31,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-18 19:21:31,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:22:13,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 19:22:13,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:22:13,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-18 19:22:13,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:22:14,449 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-18 19:22:14,449 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 19:22:14,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685340299] [2021-12-18 19:22:14,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685340299] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 19:22:14,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1385273482] [2021-12-18 19:22:14,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 19:22:14,449 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 19:22:14,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 19:22:14,450 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 19:22:14,451 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-18 19:22:14,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:22:14,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 580 conjuncts, 24 conjunts are in the unsatisfiable core [2021-12-18 19:22:14,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 19:22:14,754 INFO L388 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 [2021-12-18 19:22:40,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:22:40,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:22:40,113 INFO L354 Elim1Store]: treesize reduction 51, result has 37.8 percent of original size [2021-12-18 19:22:40,113 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 42 [2021-12-18 19:22:40,130 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-18 19:22:40,130 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 19:22:40,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1385273482] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 19:22:40,290 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-18 19:22:40,290 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 14] total 36 [2021-12-18 19:22:40,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074004385] [2021-12-18 19:22:40,290 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-18 19:22:40,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2021-12-18 19:22:40,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 19:22:40,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-12-18 19:22:40,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=1261, Unknown=11, NotChecked=0, Total=1406 [2021-12-18 19:22:40,292 INFO L87 Difference]: Start difference. First operand 323 states and 360 transitions. Second operand has 37 states, 31 states have (on average 2.5806451612903225) internal successors, (80), 32 states have internal predecessors, (80), 10 states have call successors, (11), 5 states have call predecessors, (11), 6 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2021-12-18 19:22:56,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 19:22:56,775 INFO L93 Difference]: Finished difference Result 418 states and 466 transitions. [2021-12-18 19:22:56,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-12-18 19:22:56,776 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 31 states have (on average 2.5806451612903225) internal successors, (80), 32 states have internal predecessors, (80), 10 states have call successors, (11), 5 states have call predecessors, (11), 6 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) Word has length 67 [2021-12-18 19:22:56,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 19:22:56,777 INFO L225 Difference]: With dead ends: 418 [2021-12-18 19:22:56,777 INFO L226 Difference]: Without dead ends: 418 [2021-12-18 19:22:56,779 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 72 SyntacticMatches, 6 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1038 ImplicationChecksByTransitivity, 39.8s TimeCoverageRelationStatistics Valid=484, Invalid=3660, Unknown=16, NotChecked=0, Total=4160 [2021-12-18 19:22:56,779 INFO L933 BasicCegarLoop]: 245 mSDtfsCounter, 251 mSDsluCounter, 2437 mSDsCounter, 0 mSdLazyCounter, 2043 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 2682 SdHoareTripleChecker+Invalid, 2941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 2043 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 789 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-18 19:22:56,779 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [254 Valid, 2682 Invalid, 2941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 2043 Invalid, 0 Unknown, 789 Unchecked, 2.3s Time] [2021-12-18 19:22:56,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2021-12-18 19:22:56,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 392. [2021-12-18 19:22:56,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 262 states have (on average 1.4427480916030535) internal successors, (378), 354 states have internal predecessors, (378), 35 states have call successors, (35), 18 states have call predecessors, (35), 17 states have return successors, (29), 22 states have call predecessors, (29), 21 states have call successors, (29) [2021-12-18 19:22:56,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 442 transitions. [2021-12-18 19:22:56,787 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 442 transitions. Word has length 67 [2021-12-18 19:22:56,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 19:22:56,788 INFO L470 AbstractCegarLoop]: Abstraction has 392 states and 442 transitions. [2021-12-18 19:22:56,788 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 31 states have (on average 2.5806451612903225) internal successors, (80), 32 states have internal predecessors, (80), 10 states have call successors, (11), 5 states have call predecessors, (11), 6 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2021-12-18 19:22:56,788 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 442 transitions. [2021-12-18 19:22:56,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-12-18 19:22:56,788 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 19:22:56,789 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, 1, 1] [2021-12-18 19:22:56,815 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-18 19:22:57,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 19:22:57,003 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting dll_insert_masterErr15REQUIRES_VIOLATION === [dll_insert_masterErr0REQUIRES_VIOLATION, dll_insert_masterErr1REQUIRES_VIOLATION, dll_insert_masterErr2REQUIRES_VIOLATION (and 95 more)] === [2021-12-18 19:22:57,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 19:22:57,004 INFO L85 PathProgramCache]: Analyzing trace with hash -352630061, now seen corresponding path program 1 times [2021-12-18 19:22:57,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 19:22:57,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503070747] [2021-12-18 19:22:57,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 19:22:57,004 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 19:22:57,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:22:57,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-18 19:22:57,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:22:57,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-18 19:22:57,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:27:33,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 19:27:33,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:27:33,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-18 19:27:33,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:27:34,114 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 1 proven. 19 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-18 19:27:34,114 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 19:27:34,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503070747] [2021-12-18 19:27:34,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503070747] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 19:27:34,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1916413112] [2021-12-18 19:27:34,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 19:27:34,115 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 19:27:34,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 19:27:34,120 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 19:27:34,121 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-18 19:27:34,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:27:34,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 580 conjuncts, 47 conjunts are in the unsatisfiable core [2021-12-18 19:27:34,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 19:27:34,552 INFO L388 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 [2021-12-18 19:27:34,555 INFO L388 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 [2021-12-18 19:27:34,617 INFO L388 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 [2021-12-18 19:27:34,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:27:34,906 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 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 15 treesize of output 5 [2021-12-18 19:27:34,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:27:34,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:27:34,962 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-18 19:27:35,133 INFO L388 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 [2021-12-18 19:27:35,318 INFO L388 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 7 treesize of output 5 [2021-12-18 19:27:35,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:27:35,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:27:35,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:27:35,327 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-18 19:27:35,327 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 14 [2021-12-18 19:27:35,348 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 19:27:35,349 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 19:27:35,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1916413112] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 19:27:35,808 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-18 19:27:35,808 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 15] total 37 [2021-12-18 19:27:35,808 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397985049] [2021-12-18 19:27:35,808 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-18 19:27:35,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2021-12-18 19:27:35,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 19:27:35,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-12-18 19:27:35,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=1386, Unknown=0, NotChecked=0, Total=1560 [2021-12-18 19:27:35,810 INFO L87 Difference]: Start difference. First operand 392 states and 442 transitions. Second operand has 38 states, 33 states have (on average 3.3333333333333335) internal successors, (110), 31 states have internal predecessors, (110), 12 states have call successors, (13), 8 states have call predecessors, (13), 7 states have return successors, (8), 6 states have call predecessors, (8), 7 states have call successors, (8) [2021-12-18 19:27:38,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 19:27:38,573 INFO L93 Difference]: Finished difference Result 401 states and 447 transitions. [2021-12-18 19:27:38,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-12-18 19:27:38,573 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 33 states have (on average 3.3333333333333335) internal successors, (110), 31 states have internal predecessors, (110), 12 states have call successors, (13), 8 states have call predecessors, (13), 7 states have return successors, (8), 6 states have call predecessors, (8), 7 states have call successors, (8) Word has length 67 [2021-12-18 19:27:38,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 19:27:38,575 INFO L225 Difference]: With dead ends: 401 [2021-12-18 19:27:38,575 INFO L226 Difference]: Without dead ends: 401 [2021-12-18 19:27:38,576 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 67 SyntacticMatches, 2 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 911 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=450, Invalid=3332, Unknown=0, NotChecked=0, Total=3782 [2021-12-18 19:27:38,577 INFO L933 BasicCegarLoop]: 228 mSDtfsCounter, 419 mSDsluCounter, 1941 mSDsCounter, 0 mSdLazyCounter, 1736 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 421 SdHoareTripleChecker+Valid, 2169 SdHoareTripleChecker+Invalid, 2080 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1736 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 264 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-18 19:27:38,577 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [421 Valid, 2169 Invalid, 2080 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 1736 Invalid, 0 Unknown, 264 Unchecked, 1.2s Time] [2021-12-18 19:27:38,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2021-12-18 19:27:38,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 396. [2021-12-18 19:27:38,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 264 states have (on average 1.4318181818181819) internal successors, (378), 358 states have internal predecessors, (378), 35 states have call successors, (35), 18 states have call predecessors, (35), 19 states have return successors, (32), 22 states have call predecessors, (32), 21 states have call successors, (32) [2021-12-18 19:27:38,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 445 transitions. [2021-12-18 19:27:38,584 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 445 transitions. Word has length 67 [2021-12-18 19:27:38,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 19:27:38,585 INFO L470 AbstractCegarLoop]: Abstraction has 396 states and 445 transitions. [2021-12-18 19:27:38,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 33 states have (on average 3.3333333333333335) internal successors, (110), 31 states have internal predecessors, (110), 12 states have call successors, (13), 8 states have call predecessors, (13), 7 states have return successors, (8), 6 states have call predecessors, (8), 7 states have call successors, (8) [2021-12-18 19:27:38,585 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 445 transitions. [2021-12-18 19:27:38,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-12-18 19:27:38,586 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 19:27:38,586 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 19:27:38,610 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-18 19:27:38,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-12-18 19:27:38,807 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting dll_insert_masterErr6REQUIRES_VIOLATION === [dll_insert_masterErr0REQUIRES_VIOLATION, dll_insert_masterErr1REQUIRES_VIOLATION, dll_insert_masterErr2REQUIRES_VIOLATION (and 95 more)] === [2021-12-18 19:27:38,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 19:27:38,808 INFO L85 PathProgramCache]: Analyzing trace with hash -1124436155, now seen corresponding path program 1 times [2021-12-18 19:27:38,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 19:27:38,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507148801] [2021-12-18 19:27:38,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 19:27:38,808 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 19:27:38,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:27:38,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-18 19:27:38,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:27:38,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 19:27:38,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:27:38,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-18 19:27:38,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:27:38,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-18 19:27:39,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:27:39,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 19:27:39,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:27:39,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-18 19:27:39,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:27:39,025 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 8 proven. 15 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-18 19:27:39,025 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 19:27:39,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507148801] [2021-12-18 19:27:39,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507148801] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 19:27:39,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [466812464] [2021-12-18 19:27:39,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 19:27:39,026 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 19:27:39,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 19:27:39,027 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 19:27:39,028 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-18 19:27:39,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:27:39,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 713 conjuncts, 26 conjunts are in the unsatisfiable core [2021-12-18 19:27:39,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 19:27:39,495 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-12-18 19:27:39,495 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-12-18 19:27:39,508 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-12-18 19:27:39,509 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 19:27:39,722 INFO L354 Elim1Store]: treesize reduction 10, result has 60.0 percent of original size [2021-12-18 19:27:39,723 INFO L388 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 30 treesize of output 38 [2021-12-18 19:27:39,779 INFO L354 Elim1Store]: treesize reduction 10, result has 60.0 percent of original size [2021-12-18 19:27:39,779 INFO L388 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 30 treesize of output 38 [2021-12-18 19:27:39,902 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-12-18 19:27:39,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [466812464] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 19:27:39,902 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-18 19:27:39,902 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 14 [2021-12-18 19:27:39,903 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422980808] [2021-12-18 19:27:39,903 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-18 19:27:39,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-18 19:27:39,903 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 19:27:39,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-18 19:27:39,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2021-12-18 19:27:39,904 INFO L87 Difference]: Start difference. First operand 396 states and 445 transitions. Second operand has 15 states, 12 states have (on average 5.583333333333333) internal successors, (67), 12 states have internal predecessors, (67), 8 states have call successors, (15), 6 states have call predecessors, (15), 5 states have return successors, (9), 6 states have call predecessors, (9), 4 states have call successors, (9) [2021-12-18 19:27:40,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 19:27:40,386 INFO L93 Difference]: Finished difference Result 394 states and 442 transitions. [2021-12-18 19:27:40,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-18 19:27:40,386 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 5.583333333333333) internal successors, (67), 12 states have internal predecessors, (67), 8 states have call successors, (15), 6 states have call predecessors, (15), 5 states have return successors, (9), 6 states have call predecessors, (9), 4 states have call successors, (9) Word has length 83 [2021-12-18 19:27:40,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 19:27:40,387 INFO L225 Difference]: With dead ends: 394 [2021-12-18 19:27:40,387 INFO L226 Difference]: Without dead ends: 394 [2021-12-18 19:27:40,388 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 170 SyntacticMatches, 7 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2021-12-18 19:27:40,388 INFO L933 BasicCegarLoop]: 220 mSDtfsCounter, 158 mSDsluCounter, 1548 mSDsCounter, 0 mSdLazyCounter, 988 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 1768 SdHoareTripleChecker+Invalid, 1567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 988 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 548 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-18 19:27:40,388 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [158 Valid, 1768 Invalid, 1567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 988 Invalid, 0 Unknown, 548 Unchecked, 0.4s Time] [2021-12-18 19:27:40,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2021-12-18 19:27:40,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 394. [2021-12-18 19:27:40,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 264 states have (on average 1.4204545454545454) internal successors, (375), 356 states have internal predecessors, (375), 35 states have call successors, (35), 18 states have call predecessors, (35), 19 states have return successors, (32), 22 states have call predecessors, (32), 21 states have call successors, (32) [2021-12-18 19:27:40,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 442 transitions. [2021-12-18 19:27:40,405 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 442 transitions. Word has length 83 [2021-12-18 19:27:40,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 19:27:40,405 INFO L470 AbstractCegarLoop]: Abstraction has 394 states and 442 transitions. [2021-12-18 19:27:40,405 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 5.583333333333333) internal successors, (67), 12 states have internal predecessors, (67), 8 states have call successors, (15), 6 states have call predecessors, (15), 5 states have return successors, (9), 6 states have call predecessors, (9), 4 states have call successors, (9) [2021-12-18 19:27:40,405 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 442 transitions. [2021-12-18 19:27:40,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-12-18 19:27:40,408 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 19:27:40,409 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 19:27:40,434 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-12-18 19:27:40,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-12-18 19:27:40,631 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting dll_insert_masterErr7REQUIRES_VIOLATION === [dll_insert_masterErr0REQUIRES_VIOLATION, dll_insert_masterErr1REQUIRES_VIOLATION, dll_insert_masterErr2REQUIRES_VIOLATION (and 95 more)] === [2021-12-18 19:27:40,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 19:27:40,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1124436154, now seen corresponding path program 1 times [2021-12-18 19:27:40,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 19:27:40,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630037976] [2021-12-18 19:27:40,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 19:27:40,632 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 19:27:40,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:27:40,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-18 19:27:40,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:27:40,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 19:27:40,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:27:40,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-18 19:27:40,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:27:40,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-18 19:27:40,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:27:40,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 19:27:40,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:27:40,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-18 19:27:40,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:27:40,950 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 8 proven. 16 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-12-18 19:27:40,950 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 19:27:40,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630037976] [2021-12-18 19:27:40,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630037976] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 19:27:40,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [301799710] [2021-12-18 19:27:40,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 19:27:40,951 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 19:27:40,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 19:27:40,952 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 19:27:40,957 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-18 19:27:41,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:27:41,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 713 conjuncts, 42 conjunts are in the unsatisfiable core [2021-12-18 19:27:41,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 19:27:41,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:27:41,433 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 14 [2021-12-18 19:27:41,439 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-18 19:27:41,440 INFO L388 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 11 treesize of output 11 [2021-12-18 19:27:41,461 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 11 proven. 12 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-18 19:27:41,461 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 19:27:41,692 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:27:41,694 INFO L388 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 17 treesize of output 13 [2021-12-18 19:27:41,774 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-18 19:27:41,775 INFO L388 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 22 [2021-12-18 19:27:41,780 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-18 19:27:41,781 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 12 [2021-12-18 19:27:41,836 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 19:27:41,836 INFO L388 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 29 [2021-12-18 19:27:41,843 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-18 19:27:41,843 INFO L388 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 13 treesize of output 12 [2021-12-18 19:27:41,992 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 11 proven. 12 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-18 19:27:41,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [301799710] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 19:27:41,993 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-18 19:27:41,993 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 20 [2021-12-18 19:27:41,993 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478659191] [2021-12-18 19:27:41,993 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-18 19:27:41,994 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-12-18 19:27:41,994 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 19:27:41,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-12-18 19:27:41,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2021-12-18 19:27:41,995 INFO L87 Difference]: Start difference. First operand 394 states and 442 transitions. Second operand has 21 states, 17 states have (on average 4.235294117647059) internal successors, (72), 14 states have internal predecessors, (72), 9 states have call successors, (17), 6 states have call predecessors, (17), 5 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) [2021-12-18 19:27:42,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 19:27:42,699 INFO L93 Difference]: Finished difference Result 395 states and 443 transitions. [2021-12-18 19:27:42,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-18 19:27:42,699 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 17 states have (on average 4.235294117647059) internal successors, (72), 14 states have internal predecessors, (72), 9 states have call successors, (17), 6 states have call predecessors, (17), 5 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) Word has length 83 [2021-12-18 19:27:42,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 19:27:42,700 INFO L225 Difference]: With dead ends: 395 [2021-12-18 19:27:42,701 INFO L226 Difference]: Without dead ends: 395 [2021-12-18 19:27:42,701 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 164 SyntacticMatches, 8 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=119, Invalid=693, Unknown=0, NotChecked=0, Total=812 [2021-12-18 19:27:42,701 INFO L933 BasicCegarLoop]: 245 mSDtfsCounter, 137 mSDsluCounter, 2094 mSDsCounter, 0 mSdLazyCounter, 1304 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 2339 SdHoareTripleChecker+Invalid, 2209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 866 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-18 19:27:42,702 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [140 Valid, 2339 Invalid, 2209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1304 Invalid, 0 Unknown, 866 Unchecked, 0.5s Time] [2021-12-18 19:27:42,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2021-12-18 19:27:42,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 394. [2021-12-18 19:27:42,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 265 states have (on average 1.4075471698113207) internal successors, (373), 355 states have internal predecessors, (373), 35 states have call successors, (35), 18 states have call predecessors, (35), 20 states have return successors, (32), 23 states have call predecessors, (32), 21 states have call successors, (32) [2021-12-18 19:27:42,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 440 transitions. [2021-12-18 19:27:42,709 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 440 transitions. Word has length 83 [2021-12-18 19:27:42,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 19:27:42,709 INFO L470 AbstractCegarLoop]: Abstraction has 394 states and 440 transitions. [2021-12-18 19:27:42,710 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 17 states have (on average 4.235294117647059) internal successors, (72), 14 states have internal predecessors, (72), 9 states have call successors, (17), 6 states have call predecessors, (17), 5 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) [2021-12-18 19:27:42,710 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 440 transitions. [2021-12-18 19:27:42,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-12-18 19:27:42,710 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 19:27:42,710 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1] [2021-12-18 19:27:42,737 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-12-18 19:27:42,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-12-18 19:27:42,935 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting dll_insert_masterErr12REQUIRES_VIOLATION === [dll_insert_masterErr0REQUIRES_VIOLATION, dll_insert_masterErr1REQUIRES_VIOLATION, dll_insert_masterErr2REQUIRES_VIOLATION (and 95 more)] === [2021-12-18 19:27:42,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 19:27:42,935 INFO L85 PathProgramCache]: Analyzing trace with hash 289651718, now seen corresponding path program 1 times [2021-12-18 19:27:42,935 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 19:27:42,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428116523] [2021-12-18 19:27:42,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 19:27:42,935 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 19:27:42,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:27:42,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-18 19:27:43,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:27:43,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-18 19:27:43,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:27:43,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 19:27:43,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:27:43,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-18 19:27:43,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:27:43,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-18 19:27:43,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:27:43,458 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 37 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-18 19:27:43,458 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 19:27:43,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428116523] [2021-12-18 19:27:43,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428116523] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 19:27:43,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [95366520] [2021-12-18 19:27:43,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 19:27:43,459 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 19:27:43,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 19:27:43,459 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 19:27:43,460 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-18 19:27:43,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:27:43,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 701 conjuncts, 60 conjunts are in the unsatisfiable core [2021-12-18 19:27:43,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 19:27:43,936 INFO L388 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 [2021-12-18 19:27:43,990 INFO L388 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 [2021-12-18 19:27:44,250 WARN L860 $PredicateComparison]: unable to prove that (exists ((|##fun~$Pointer$~TO~VOID_dll_insert_slave_~item~0#1.base| Int) (v_ArrVal_4653 (Array Int Int))) (and (< |##fun~$Pointer$~TO~VOID_dll_insert_slave_~item~0#1.base| |c_#StackHeapBarrier|) (= |c_##fun~$Pointer$~TO~VOID_dll_insert_slave_~next~0#1.base| (select (select (store |c_old(#memory_$Pointer$.base)| |##fun~$Pointer$~TO~VOID_dll_insert_slave_~item~0#1.base| v_ArrVal_4653) |c_##fun~$Pointer$~TO~VOID_#in~10#1.base|) |c_##fun~$Pointer$~TO~VOID_#in~10#1.offset|)))) is different from true [2021-12-18 19:27:44,258 WARN L860 $PredicateComparison]: unable to prove that (exists ((|##fun~$Pointer$~TO~VOID_dll_insert_slave_~item~0#1.base| Int) (v_ArrVal_4653 (Array Int Int))) (and (< |##fun~$Pointer$~TO~VOID_dll_insert_slave_~item~0#1.base| |c_#StackHeapBarrier|) (= 0 (select (select (store |c_old(#memory_$Pointer$.base)| |##fun~$Pointer$~TO~VOID_dll_insert_slave_~item~0#1.base| v_ArrVal_4653) |c_##fun~$Pointer$~TO~VOID_#in~10#1.base|) |c_##fun~$Pointer$~TO~VOID_#in~10#1.offset|)))) is different from true [2021-12-18 19:27:44,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:27:44,282 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2021-12-18 19:27:44,293 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 37 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 5 not checked. [2021-12-18 19:27:44,294 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 19:27:44,649 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_##fun~$Pointer$~TO~VOID_dll_insert_slave_~item~0#1.base_216| Int) (v_ArrVal_4676 (Array Int Int))) (or (<= |c_#StackHeapBarrier| |v_##fun~$Pointer$~TO~VOID_dll_insert_slave_~item~0#1.base_216|) (not (= 0 (select (select (store |c_#memory_$Pointer$.base| |v_##fun~$Pointer$~TO~VOID_dll_insert_slave_~item~0#1.base_216| v_ArrVal_4676) |c_dll_create_generic_~#dll~0.base|) |c_dll_create_generic_~#dll~0.offset|))))) is different from false [2021-12-18 19:27:44,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [95366520] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 19:27:44,650 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-18 19:27:44,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 33 [2021-12-18 19:27:44,650 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570681814] [2021-12-18 19:27:44,650 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-18 19:27:44,650 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-12-18 19:27:44,651 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 19:27:44,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-12-18 19:27:44,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=854, Unknown=4, NotChecked=180, Total=1122 [2021-12-18 19:27:44,652 INFO L87 Difference]: Start difference. First operand 394 states and 440 transitions. Second operand has 33 states, 32 states have (on average 3.15625) internal successors, (101), 31 states have internal predecessors, (101), 5 states have call successors, (13), 3 states have call predecessors, (13), 6 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2021-12-18 19:27:45,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 19:27:45,819 INFO L93 Difference]: Finished difference Result 398 states and 443 transitions. [2021-12-18 19:27:45,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-18 19:27:45,820 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 3.15625) internal successors, (101), 31 states have internal predecessors, (101), 5 states have call successors, (13), 3 states have call predecessors, (13), 6 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) Word has length 83 [2021-12-18 19:27:45,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 19:27:45,821 INFO L225 Difference]: With dead ends: 398 [2021-12-18 19:27:45,821 INFO L226 Difference]: Without dead ends: 394 [2021-12-18 19:27:45,822 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 88 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 412 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=207, Invalid=2048, Unknown=13, NotChecked=282, Total=2550 [2021-12-18 19:27:45,822 INFO L933 BasicCegarLoop]: 228 mSDtfsCounter, 80 mSDsluCounter, 3110 mSDsCounter, 0 mSdLazyCounter, 1532 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 3338 SdHoareTripleChecker+Invalid, 2794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1224 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-18 19:27:45,822 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 3338 Invalid, 2794 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1532 Invalid, 0 Unknown, 1224 Unchecked, 0.7s Time] [2021-12-18 19:27:45,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2021-12-18 19:27:45,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 394. [2021-12-18 19:27:45,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 265 states have (on average 1.4037735849056603) internal successors, (372), 355 states have internal predecessors, (372), 35 states have call successors, (35), 18 states have call predecessors, (35), 20 states have return successors, (32), 23 states have call predecessors, (32), 21 states have call successors, (32) [2021-12-18 19:27:45,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 439 transitions. [2021-12-18 19:27:45,828 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 439 transitions. Word has length 83 [2021-12-18 19:27:45,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 19:27:45,829 INFO L470 AbstractCegarLoop]: Abstraction has 394 states and 439 transitions. [2021-12-18 19:27:45,829 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 3.15625) internal successors, (101), 31 states have internal predecessors, (101), 5 states have call successors, (13), 3 states have call predecessors, (13), 6 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2021-12-18 19:27:45,829 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 439 transitions. [2021-12-18 19:27:45,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-12-18 19:27:45,829 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 19:27:45,829 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-12-18 19:27:45,854 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-12-18 19:27:46,030 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-12-18 19:27:46,030 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting dll_insert_masterErr12REQUIRES_VIOLATION === [dll_insert_masterErr0REQUIRES_VIOLATION, dll_insert_masterErr1REQUIRES_VIOLATION, dll_insert_masterErr2REQUIRES_VIOLATION (and 95 more)] === [2021-12-18 19:27:46,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 19:27:46,031 INFO L85 PathProgramCache]: Analyzing trace with hash -603235293, now seen corresponding path program 2 times [2021-12-18 19:27:46,031 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 19:27:46,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758937073] [2021-12-18 19:27:46,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 19:27:46,031 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 19:27:46,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:27:46,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-18 19:27:46,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:27:46,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-18 19:27:46,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Killed by 15