./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 54858612 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 79a0f3fe2cfdc34f95f5ad882c4d01fe846ad912 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-5485861 [2020-10-25 22:06:12,804 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-25 22:06:12,807 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-25 22:06:12,871 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-25 22:06:12,872 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-25 22:06:12,874 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-25 22:06:12,876 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-25 22:06:12,878 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-25 22:06:12,880 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-25 22:06:12,882 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-25 22:06:12,884 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-25 22:06:12,885 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-25 22:06:12,886 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-25 22:06:12,888 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-25 22:06:12,889 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-25 22:06:12,891 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-25 22:06:12,892 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-25 22:06:12,894 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-25 22:06:12,896 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-25 22:06:12,899 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-25 22:06:12,901 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-25 22:06:12,905 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-25 22:06:12,907 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-25 22:06:12,908 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-25 22:06:12,912 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-25 22:06:12,913 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-25 22:06:12,914 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-25 22:06:12,915 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-25 22:06:12,916 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-25 22:06:12,917 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-25 22:06:12,918 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-25 22:06:12,919 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-25 22:06:12,920 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-25 22:06:12,922 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-25 22:06:12,923 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-25 22:06:12,924 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-25 22:06:12,925 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-25 22:06:12,925 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-25 22:06:12,926 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-25 22:06:12,927 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-25 22:06:12,928 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-25 22:06:12,929 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-25 22:06:12,966 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-25 22:06:12,966 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-25 22:06:12,968 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-25 22:06:12,968 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-25 22:06:12,968 INFO L138 SettingsManager]: * Use SBE=true [2020-10-25 22:06:12,969 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-25 22:06:12,969 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-25 22:06:12,969 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-25 22:06:12,969 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-25 22:06:12,969 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-25 22:06:12,970 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-25 22:06:12,970 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-25 22:06:12,970 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-25 22:06:12,970 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-25 22:06:12,971 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-25 22:06:12,973 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-25 22:06:12,973 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-25 22:06:12,974 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-25 22:06:12,974 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-25 22:06:12,974 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-25 22:06:12,974 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-25 22:06:12,975 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-25 22:06:12,975 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-25 22:06:12,975 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-25 22:06:12,975 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-25 22:06:12,976 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-25 22:06:12,976 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-25 22:06:12,976 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-25 22:06:12,976 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-25 22:06:12,977 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 79a0f3fe2cfdc34f95f5ad882c4d01fe846ad912 [2020-10-25 22:06:13,480 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-25 22:06:13,537 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-25 22:06:13,540 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-25 22:06:13,542 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-25 22:06:13,544 INFO L275 PluginConnector]: CDTParser initialized [2020-10-25 22:06:13,545 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i [2020-10-25 22:06:13,647 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c9b7fe4c3/dc683c1e033b4b96b2b4fde8c7d40bb8/FLAG4711b05ae [2020-10-25 22:06:14,485 INFO L306 CDTParser]: Found 1 translation units. [2020-10-25 22:06:14,487 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i [2020-10-25 22:06:14,512 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c9b7fe4c3/dc683c1e033b4b96b2b4fde8c7d40bb8/FLAG4711b05ae [2020-10-25 22:06:14,704 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c9b7fe4c3/dc683c1e033b4b96b2b4fde8c7d40bb8 [2020-10-25 22:06:14,708 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-25 22:06:14,715 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-25 22:06:14,719 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-25 22:06:14,719 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-25 22:06:14,723 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-25 22:06:14,724 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 10:06:14" (1/1) ... [2020-10-25 22:06:14,728 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66dc077f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:06:14, skipping insertion in model container [2020-10-25 22:06:14,729 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 10:06:14" (1/1) ... [2020-10-25 22:06:14,738 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-25 22:06:14,834 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-25 22:06:15,147 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 22:06:15,169 INFO L203 MainTranslator]: Completed pre-run [2020-10-25 22:06:15,229 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 22:06:15,291 INFO L208 MainTranslator]: Completed translation [2020-10-25 22:06:15,292 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:06:15 WrapperNode [2020-10-25 22:06:15,292 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-25 22:06:15,293 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-25 22:06:15,294 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-25 22:06:15,294 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-25 22:06:15,303 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:06:15" (1/1) ... [2020-10-25 22:06:15,323 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:06:15" (1/1) ... [2020-10-25 22:06:15,352 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-25 22:06:15,353 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-25 22:06:15,353 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-25 22:06:15,353 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-25 22:06:15,364 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:06:15" (1/1) ... [2020-10-25 22:06:15,364 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:06:15" (1/1) ... [2020-10-25 22:06:15,369 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:06:15" (1/1) ... [2020-10-25 22:06:15,369 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:06:15" (1/1) ... [2020-10-25 22:06:15,380 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:06:15" (1/1) ... [2020-10-25 22:06:15,386 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:06:15" (1/1) ... [2020-10-25 22:06:15,389 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:06:15" (1/1) ... [2020-10-25 22:06:15,392 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-25 22:06:15,393 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-25 22:06:15,393 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-25 22:06:15,397 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-25 22:06:15,399 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:06:15" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-25 22:06:15,477 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-25 22:06:15,477 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-25 22:06:15,477 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-25 22:06:15,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-25 22:06:15,479 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-25 22:06:15,480 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-25 22:06:15,480 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-25 22:06:15,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-25 22:06:15,482 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-25 22:06:15,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-25 22:06:16,083 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-25 22:06:16,083 INFO L298 CfgBuilder]: Removed 19 assume(true) statements. [2020-10-25 22:06:16,085 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 10:06:16 BoogieIcfgContainer [2020-10-25 22:06:16,086 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-25 22:06:16,088 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-25 22:06:16,088 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-25 22:06:16,093 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-25 22:06:16,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 10:06:14" (1/3) ... [2020-10-25 22:06:16,094 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9ef6cd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 10:06:16, skipping insertion in model container [2020-10-25 22:06:16,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:06:15" (2/3) ... [2020-10-25 22:06:16,095 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9ef6cd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 10:06:16, skipping insertion in model container [2020-10-25 22:06:16,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 10:06:16" (3/3) ... [2020-10-25 22:06:16,097 INFO L111 eAbstractionObserver]: Analyzing ICFG dll-rb-cnstr_1-2.i [2020-10-25 22:06:16,110 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-25 22:06:16,117 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-10-25 22:06:16,132 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-25 22:06:16,176 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-25 22:06:16,177 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-25 22:06:16,177 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-25 22:06:16,177 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-25 22:06:16,178 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-25 22:06:16,178 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-25 22:06:16,178 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-25 22:06:16,178 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-25 22:06:16,205 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-10-25 22:06:16,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-25 22:06:16,213 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 22:06:16,214 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-25 22:06:16,214 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 22:06:16,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 22:06:16,225 INFO L82 PathProgramCache]: Analyzing trace with hash 1819222424, now seen corresponding path program 1 times [2020-10-25 22:06:16,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 22:06:16,238 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805616879] [2020-10-25 22:06:16,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 22:06:16,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 22:06:16,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 22:06:16,478 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805616879] [2020-10-25 22:06:16,478 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 22:06:16,480 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-25 22:06:16,481 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700853540] [2020-10-25 22:06:16,486 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-25 22:06:16,487 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 22:06:16,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-25 22:06:16,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-25 22:06:16,508 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 2 states. [2020-10-25 22:06:16,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 22:06:16,536 INFO L93 Difference]: Finished difference Result 62 states and 99 transitions. [2020-10-25 22:06:16,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-25 22:06:16,538 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2020-10-25 22:06:16,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 22:06:16,550 INFO L225 Difference]: With dead ends: 62 [2020-10-25 22:06:16,551 INFO L226 Difference]: Without dead ends: 26 [2020-10-25 22:06:16,556 INFO L677 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 [2020-10-25 22:06:16,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-25 22:06:16,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-10-25 22:06:16,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-25 22:06:16,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2020-10-25 22:06:16,625 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 7 [2020-10-25 22:06:16,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 22:06:16,626 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2020-10-25 22:06:16,626 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-25 22:06:16,626 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2020-10-25 22:06:16,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-25 22:06:16,627 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 22:06:16,627 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 22:06:16,628 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-25 22:06:16,628 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 22:06:16,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 22:06:16,631 INFO L82 PathProgramCache]: Analyzing trace with hash 177875533, now seen corresponding path program 1 times [2020-10-25 22:06:16,631 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 22:06:16,632 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186747099] [2020-10-25 22:06:16,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 22:06:16,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 22:06:16,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 22:06:16,731 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186747099] [2020-10-25 22:06:16,731 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 22:06:16,731 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-25 22:06:16,731 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074757314] [2020-10-25 22:06:16,733 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-25 22:06:16,733 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 22:06:16,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-25 22:06:16,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-25 22:06:16,734 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand 4 states. [2020-10-25 22:06:16,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 22:06:16,813 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2020-10-25 22:06:16,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-25 22:06:16,813 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-10-25 22:06:16,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 22:06:16,814 INFO L225 Difference]: With dead ends: 35 [2020-10-25 22:06:16,814 INFO L226 Difference]: Without dead ends: 32 [2020-10-25 22:06:16,815 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-25 22:06:16,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-25 22:06:16,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 23. [2020-10-25 22:06:16,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-25 22:06:16,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2020-10-25 22:06:16,821 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 8 [2020-10-25 22:06:16,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 22:06:16,821 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2020-10-25 22:06:16,821 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-25 22:06:16,821 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2020-10-25 22:06:16,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-25 22:06:16,822 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 22:06:16,822 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 22:06:16,822 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-25 22:06:16,823 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 22:06:16,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 22:06:16,823 INFO L82 PathProgramCache]: Analyzing trace with hash -574954344, now seen corresponding path program 1 times [2020-10-25 22:06:16,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 22:06:16,824 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146397515] [2020-10-25 22:06:16,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 22:06:16,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 22:06:17,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 22:06:17,006 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146397515] [2020-10-25 22:06:17,006 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 22:06:17,006 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-25 22:06:17,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58414820] [2020-10-25 22:06:17,007 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-25 22:06:17,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 22:06:17,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-25 22:06:17,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-25 22:06:17,011 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand 5 states. [2020-10-25 22:06:17,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 22:06:17,203 INFO L93 Difference]: Finished difference Result 52 states and 58 transitions. [2020-10-25 22:06:17,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-25 22:06:17,205 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-10-25 22:06:17,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 22:06:17,206 INFO L225 Difference]: With dead ends: 52 [2020-10-25 22:06:17,206 INFO L226 Difference]: Without dead ends: 49 [2020-10-25 22:06:17,209 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-25 22:06:17,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-10-25 22:06:17,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 30. [2020-10-25 22:06:17,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-25 22:06:17,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2020-10-25 22:06:17,221 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 11 [2020-10-25 22:06:17,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 22:06:17,222 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2020-10-25 22:06:17,222 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-25 22:06:17,222 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2020-10-25 22:06:17,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-25 22:06:17,223 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 22:06:17,223 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 22:06:17,224 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-25 22:06:17,224 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 22:06:17,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 22:06:17,226 INFO L82 PathProgramCache]: Analyzing trace with hash -1915994638, now seen corresponding path program 1 times [2020-10-25 22:06:17,226 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 22:06:17,226 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612167960] [2020-10-25 22:06:17,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 22:06:17,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 22:06:17,547 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 22:06:17,547 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612167960] [2020-10-25 22:06:17,547 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1702859236] [2020-10-25 22:06:17,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-25 22:06:17,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 22:06:17,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 36 conjunts are in the unsatisfiable core [2020-10-25 22:06:17,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 22:06:17,717 INFO L384 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 [2020-10-25 22:06:17,718 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-25 22:06:17,736 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-25 22:06:17,745 INFO L384 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 13 treesize of output 9 [2020-10-25 22:06:17,745 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-25 22:06:17,759 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-25 22:06:17,760 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-25 22:06:17,760 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:29, output treesize:24 [2020-10-25 22:06:18,042 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-25 22:06:18,042 INFO L384 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 39 [2020-10-25 22:06:18,044 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-25 22:06:18,148 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2020-10-25 22:06:18,150 INFO L625 ElimStorePlain]: treesize reduction 14, result has 88.9 percent of original size [2020-10-25 22:06:18,160 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-25 22:06:18,198 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-25 22:06:18,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-25 22:06:18,212 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 20 [2020-10-25 22:06:18,213 INFO L545 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-10-25 22:06:18,240 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-25 22:06:18,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-25 22:06:18,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-25 22:06:18,251 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 23 [2020-10-25 22:06:18,252 INFO L545 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-10-25 22:06:18,274 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-25 22:06:18,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-25 22:06:18,280 INFO L545 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2020-10-25 22:06:18,297 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-25 22:06:18,299 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, 4 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-25 22:06:18,300 INFO L244 ElimStorePlain]: Needed 6 recursive calls to eliminate 8 variables, input treesize:114, output treesize:27 [2020-10-25 22:06:18,511 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-25 22:06:18,512 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 26 [2020-10-25 22:06:18,513 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-25 22:06:18,590 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-25 22:06:18,596 INFO L441 ElimStorePlain]: Different costs {2=[|v_#memory_int_31|, |v_#memory_int_32|, |v_#memory_int_33|, |v_#memory_$Pointer$.base_23|], 4=[|v_#memory_int_35|]} [2020-10-25 22:06:18,607 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-25 22:06:18,684 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-25 22:06:18,690 INFO L545 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-25 22:06:18,743 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-25 22:06:18,747 INFO L545 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-25 22:06:18,788 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-25 22:06:18,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-25 22:06:18,793 INFO L545 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2020-10-25 22:06:18,819 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-25 22:06:18,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-25 22:06:18,882 INFO L350 Elim1Store]: treesize reduction 65, result has 46.7 percent of original size [2020-10-25 22:06:18,883 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 57 treesize of output 85 [2020-10-25 22:06:18,884 INFO L545 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2020-10-25 22:06:18,947 INFO L625 ElimStorePlain]: treesize reduction 18, result has 81.4 percent of original size [2020-10-25 22:06:18,979 INFO L545 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-1 vars, 5 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2020-10-25 22:06:18,979 INFO L244 ElimStorePlain]: Needed 7 recursive calls to eliminate 11 variables, input treesize:249, output treesize:43 [2020-10-25 22:06:19,135 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2020-10-25 22:06:19,139 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-25 22:06:19,152 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-25 22:06:19,154 INFO L545 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-25 22:06:19,154 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 6 variables, input treesize:45, output treesize:3 [2020-10-25 22:06:19,158 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 22:06:19,159 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-25 22:06:19,159 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2020-10-25 22:06:19,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484964813] [2020-10-25 22:06:19,160 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-25 22:06:19,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 22:06:19,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-25 22:06:19,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-10-25 22:06:19,162 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 11 states. [2020-10-25 22:06:19,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 22:06:19,943 INFO L93 Difference]: Finished difference Result 65 states and 74 transitions. [2020-10-25 22:06:19,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-25 22:06:19,949 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-10-25 22:06:19,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 22:06:19,951 INFO L225 Difference]: With dead ends: 65 [2020-10-25 22:06:19,952 INFO L226 Difference]: Without dead ends: 62 [2020-10-25 22:06:19,952 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2020-10-25 22:06:19,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-25 22:06:19,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 20. [2020-10-25 22:06:19,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-10-25 22:06:19,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2020-10-25 22:06:19,958 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 14 [2020-10-25 22:06:19,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 22:06:19,959 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2020-10-25 22:06:19,959 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-25 22:06:19,959 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2020-10-25 22:06:19,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-25 22:06:19,960 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 22:06:19,960 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 22:06:20,173 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-25 22:06:20,174 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 22:06:20,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 22:06:20,175 INFO L82 PathProgramCache]: Analyzing trace with hash 1796257513, now seen corresponding path program 1 times [2020-10-25 22:06:20,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 22:06:20,177 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653287157] [2020-10-25 22:06:20,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 22:06:20,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 22:06:20,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 22:06:20,276 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653287157] [2020-10-25 22:06:20,276 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 22:06:20,276 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-25 22:06:20,276 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086474513] [2020-10-25 22:06:20,277 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-25 22:06:20,277 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 22:06:20,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-25 22:06:20,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-25 22:06:20,278 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand 5 states. [2020-10-25 22:06:20,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 22:06:20,387 INFO L93 Difference]: Finished difference Result 38 states and 43 transitions. [2020-10-25 22:06:20,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-25 22:06:20,388 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-10-25 22:06:20,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 22:06:20,389 INFO L225 Difference]: With dead ends: 38 [2020-10-25 22:06:20,389 INFO L226 Difference]: Without dead ends: 29 [2020-10-25 22:06:20,390 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-25 22:06:20,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-25 22:06:20,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 22. [2020-10-25 22:06:20,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-10-25 22:06:20,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2020-10-25 22:06:20,395 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 16 [2020-10-25 22:06:20,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 22:06:20,396 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2020-10-25 22:06:20,396 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-25 22:06:20,396 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2020-10-25 22:06:20,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-25 22:06:20,397 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 22:06:20,397 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 22:06:20,397 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-25 22:06:20,398 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 22:06:20,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 22:06:20,398 INFO L82 PathProgramCache]: Analyzing trace with hash 1798104555, now seen corresponding path program 1 times [2020-10-25 22:06:20,399 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 22:06:20,399 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761186041] [2020-10-25 22:06:20,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 22:06:20,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 22:06:20,412 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 22:06:20,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 22:06:20,429 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 22:06:20,459 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-25 22:06:20,459 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-25 22:06:20,460 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-25 22:06:20,490 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 10:06:20 BoogieIcfgContainer [2020-10-25 22:06:20,490 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-25 22:06:20,491 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-25 22:06:20,491 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-25 22:06:20,491 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-25 22:06:20,492 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 10:06:16" (3/4) ... [2020-10-25 22:06:20,495 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-25 22:06:20,565 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-25 22:06:20,565 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-25 22:06:20,570 INFO L168 Benchmark]: Toolchain (without parser) took 5857.17 ms. Allocated memory was 44.0 MB in the beginning and 86.0 MB in the end (delta: 41.9 MB). Free memory was 20.2 MB in the beginning and 48.4 MB in the end (delta: -28.1 MB). Peak memory consumption was 14.8 MB. Max. memory is 16.1 GB. [2020-10-25 22:06:20,571 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 44.0 MB. Free memory is still 29.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 22:06:20,572 INFO L168 Benchmark]: CACSL2BoogieTranslator took 573.77 ms. Allocated memory was 44.0 MB in the beginning and 58.7 MB in the end (delta: 14.7 MB). Free memory was 19.6 MB in the beginning and 32.5 MB in the end (delta: -12.8 MB). Peak memory consumption was 7.0 MB. Max. memory is 16.1 GB. [2020-10-25 22:06:20,574 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.35 ms. Allocated memory is still 58.7 MB. Free memory was 32.5 MB in the beginning and 30.2 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 22:06:20,575 INFO L168 Benchmark]: Boogie Preprocessor took 39.74 ms. Allocated memory is still 58.7 MB. Free memory was 30.2 MB in the beginning and 28.7 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 22:06:20,575 INFO L168 Benchmark]: RCFGBuilder took 692.82 ms. Allocated memory is still 58.7 MB. Free memory was 28.6 MB in the beginning and 38.7 MB in the end (delta: -10.1 MB). Peak memory consumption was 10.7 MB. Max. memory is 16.1 GB. [2020-10-25 22:06:20,576 INFO L168 Benchmark]: TraceAbstraction took 4402.78 ms. Allocated memory was 58.7 MB in the beginning and 86.0 MB in the end (delta: 27.3 MB). Free memory was 38.1 MB in the beginning and 50.5 MB in the end (delta: -12.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-10-25 22:06:20,577 INFO L168 Benchmark]: Witness Printer took 74.25 ms. Allocated memory is still 86.0 MB. Free memory was 50.5 MB in the beginning and 48.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 22:06:20,590 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 44.0 MB. Free memory is still 29.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 573.77 ms. Allocated memory was 44.0 MB in the beginning and 58.7 MB in the end (delta: 14.7 MB). Free memory was 19.6 MB in the beginning and 32.5 MB in the end (delta: -12.8 MB). Peak memory consumption was 7.0 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 58.35 ms. Allocated memory is still 58.7 MB. Free memory was 32.5 MB in the beginning and 30.2 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 39.74 ms. Allocated memory is still 58.7 MB. Free memory was 30.2 MB in the beginning and 28.7 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 692.82 ms. Allocated memory is still 58.7 MB. Free memory was 28.6 MB in the beginning and 38.7 MB in the end (delta: -10.1 MB). Peak memory consumption was 10.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4402.78 ms. Allocated memory was 58.7 MB in the beginning and 86.0 MB in the end (delta: 27.3 MB). Free memory was 38.1 MB in the beginning and 50.5 MB in the end (delta: -12.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Witness Printer took 74.25 ms. Allocated memory is still 86.0 MB. Free memory was 50.5 MB in the beginning and 48.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 991]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L1005] SLL* list = malloc(sizeof(SLL)); [L1006] list->next = ((void*)0) [L1007] list->prev = ((void*)0) [L1008] list->colour = BLACK [L1010] SLL* end = list; [L1013] COND FALSE !(__VERIFIER_nondet_int()) [L1036] end = ((void*)0) [L1037] end = list [L1040] COND FALSE !(!(((void*)0) != end)) [L1041] EXPR end->colour [L1041] COND FALSE !(!(BLACK == end->colour)) [L1043] COND TRUE ((void*)0) != end [L1045] EXPR end->colour [L1045] COND FALSE !(RED == end->colour) [L1051] EXPR end->next [L1051] COND TRUE !(end->next) [L991] COND FALSE !(0) [L991] __assert_fail ("0", "dll-rb-cnstr_1-2.c", 11, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 35 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.2s, OverallIterations: 6, TraceHistogramMax: 2, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 137 SDtfs, 165 SDslu, 223 SDs, 0 SdLazy, 213 SolverSat, 45 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 46 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 77 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 86 NumberOfCodeBlocks, 86 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 64 ConstructedInterpolants, 6 QuantifiedInterpolants, 7783 SizeOfPredicates, 14 NumberOfNonLiveVariables, 105 ConjunctsInSsa, 36 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 0/4 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...