./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_eb626765-4c57-4a72-963d-10ccad784592/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_eb626765-4c57-4a72-963d-10ccad784592/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_eb626765-4c57-4a72-963d-10ccad784592/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_eb626765-4c57-4a72-963d-10ccad784592/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_eb626765-4c57-4a72-963d-10ccad784592/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_eb626765-4c57-4a72-963d-10ccad784592/bin/uautomizer --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 0adf73b7dd596c46d6accaa4759d997d536c99cf ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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-a4ecdab [2020-11-28 03:16:40,506 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:16:40,522 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:16:40,574 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:16:40,575 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:16:40,582 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:16:40,584 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:16:40,586 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:16:40,588 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:16:40,591 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:16:40,592 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:16:40,595 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:16:40,596 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:16:40,604 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:16:40,605 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:16:40,606 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:16:40,607 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:16:40,608 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:16:40,610 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:16:40,612 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:16:40,614 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:16:40,620 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:16:40,621 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:16:40,623 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:16:40,628 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:16:40,630 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:16:40,630 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:16:40,632 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:16:40,633 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:16:40,635 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:16:40,635 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:16:40,636 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:16:40,638 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:16:40,640 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:16:40,641 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:16:40,641 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:16:40,642 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:16:40,642 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:16:40,643 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:16:40,644 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:16:40,645 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:16:40,647 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_eb626765-4c57-4a72-963d-10ccad784592/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-28 03:16:40,694 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:16:40,694 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:16:40,697 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:16:40,697 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:16:40,697 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:16:40,698 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:16:40,698 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:16:40,698 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:16:40,698 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:16:40,699 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:16:40,700 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 03:16:40,700 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:16:40,700 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 03:16:40,701 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:16:40,701 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:16:40,701 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:16:40,701 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 03:16:40,702 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:16:40,702 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:16:40,702 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:16:40,702 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:16:40,702 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:16:40,703 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:16:40,703 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:16:40,703 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 03:16:40,704 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:16:40,704 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 03:16:40,704 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 03:16:40,704 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:16:40,705 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:/tmp/vcloud-vcloud-master/worker/run_dir_eb626765-4c57-4a72-963d-10ccad784592/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_eb626765-4c57-4a72-963d-10ccad784592/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0adf73b7dd596c46d6accaa4759d997d536c99cf [2020-11-28 03:16:41,044 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:16:41,085 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:16:41,089 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:16:41,090 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:16:41,092 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:16:41,093 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_eb626765-4c57-4a72-963d-10ccad784592/bin/uautomizer/../../sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i [2020-11-28 03:16:41,168 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_eb626765-4c57-4a72-963d-10ccad784592/bin/uautomizer/data/41cdc76ac/937d72f771134a8dbc883e5a7c724fc8/FLAG12ac1acb5 [2020-11-28 03:16:41,806 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:16:41,807 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_eb626765-4c57-4a72-963d-10ccad784592/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i [2020-11-28 03:16:41,829 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_eb626765-4c57-4a72-963d-10ccad784592/bin/uautomizer/data/41cdc76ac/937d72f771134a8dbc883e5a7c724fc8/FLAG12ac1acb5 [2020-11-28 03:16:42,076 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_eb626765-4c57-4a72-963d-10ccad784592/bin/uautomizer/data/41cdc76ac/937d72f771134a8dbc883e5a7c724fc8 [2020-11-28 03:16:42,078 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:16:42,079 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:16:42,081 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:16:42,081 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:16:42,084 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:16:42,085 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:16:42" (1/1) ... [2020-11-28 03:16:42,087 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a769cc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:42, skipping insertion in model container [2020-11-28 03:16:42,087 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:16:42" (1/1) ... [2020-11-28 03:16:42,095 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:16:42,139 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:16:42,465 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:16:42,474 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:16:42,556 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:16:42,615 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:16:42,616 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:42 WrapperNode [2020-11-28 03:16:42,616 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:16:42,617 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:16:42,617 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:16:42,617 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:16:42,625 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:42" (1/1) ... [2020-11-28 03:16:42,639 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:42" (1/1) ... [2020-11-28 03:16:42,677 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:16:42,678 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:16:42,678 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:16:42,679 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:16:42,687 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:42" (1/1) ... [2020-11-28 03:16:42,687 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:42" (1/1) ... [2020-11-28 03:16:42,692 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:42" (1/1) ... [2020-11-28 03:16:42,692 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:42" (1/1) ... [2020-11-28 03:16:42,700 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:42" (1/1) ... [2020-11-28 03:16:42,706 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:42" (1/1) ... [2020-11-28 03:16:42,708 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:42" (1/1) ... [2020-11-28 03:16:42,711 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:16:42,712 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:16:42,713 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:16:42,713 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:16:42,714 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:42" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_eb626765-4c57-4a72-963d-10ccad784592/bin/uautomizer/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 [2020-11-28 03:16:42,785 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-28 03:16:42,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 03:16:42,786 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-28 03:16:42,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-28 03:16:42,786 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:16:42,786 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-28 03:16:42,786 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 03:16:42,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 03:16:42,787 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:16:42,787 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:16:43,416 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:16:43,416 INFO L298 CfgBuilder]: Removed 19 assume(true) statements. [2020-11-28 03:16:43,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:16:43 BoogieIcfgContainer [2020-11-28 03:16:43,418 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:16:43,419 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:16:43,419 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:16:43,423 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:16:43,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:16:42" (1/3) ... [2020-11-28 03:16:43,424 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@555d176d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:16:43, skipping insertion in model container [2020-11-28 03:16:43,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:42" (2/3) ... [2020-11-28 03:16:43,425 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@555d176d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:16:43, skipping insertion in model container [2020-11-28 03:16:43,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:16:43" (3/3) ... [2020-11-28 03:16:43,426 INFO L111 eAbstractionObserver]: Analyzing ICFG sll-rb-cnstr_1-2.i [2020-11-28 03:16:43,437 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:16:43,442 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-11-28 03:16:43,454 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-11-28 03:16:43,481 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:16:43,481 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 03:16:43,482 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:16:43,482 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:16:43,482 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:16:43,482 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:16:43,482 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:16:43,483 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:16:43,501 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-11-28 03:16:43,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-28 03:16:43,507 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:16:43,508 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:16:43,508 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:16:43,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:43,523 INFO L82 PathProgramCache]: Analyzing trace with hash 1819222424, now seen corresponding path program 1 times [2020-11-28 03:16:43,533 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:43,533 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273047290] [2020-11-28 03:16:43,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:43,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:43,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:16:43,740 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273047290] [2020-11-28 03:16:43,741 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:16:43,741 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 03:16:43,743 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750851254] [2020-11-28 03:16:43,749 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 03:16:43,749 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:16:43,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 03:16:43,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 03:16:43,769 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 2 states. [2020-11-28 03:16:43,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:16:43,792 INFO L93 Difference]: Finished difference Result 62 states and 99 transitions. [2020-11-28 03:16:43,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 03:16:43,793 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2020-11-28 03:16:43,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:16:43,804 INFO L225 Difference]: With dead ends: 62 [2020-11-28 03:16:43,804 INFO L226 Difference]: Without dead ends: 26 [2020-11-28 03:16:43,818 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 [2020-11-28 03:16:43,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-11-28 03:16:43,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-11-28 03:16:43,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-11-28 03:16:43,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2020-11-28 03:16:43,863 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 7 [2020-11-28 03:16:43,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:16:43,863 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2020-11-28 03:16:43,863 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 03:16:43,864 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2020-11-28 03:16:43,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-28 03:16:43,865 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:16:43,865 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:16:43,865 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 03:16:43,866 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:16:43,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:43,869 INFO L82 PathProgramCache]: Analyzing trace with hash 177875533, now seen corresponding path program 1 times [2020-11-28 03:16:43,869 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:43,870 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463642150] [2020-11-28 03:16:43,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:43,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:43,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:16:43,977 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463642150] [2020-11-28 03:16:43,977 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:16:43,977 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:16:43,977 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755510484] [2020-11-28 03:16:43,978 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:16:43,979 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:16:43,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:16:43,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:16:43,980 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand 4 states. [2020-11-28 03:16:44,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:16:44,066 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2020-11-28 03:16:44,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:16:44,067 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-11-28 03:16:44,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:16:44,068 INFO L225 Difference]: With dead ends: 35 [2020-11-28 03:16:44,068 INFO L226 Difference]: Without dead ends: 32 [2020-11-28 03:16:44,069 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 [2020-11-28 03:16:44,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-11-28 03:16:44,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 23. [2020-11-28 03:16:44,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-11-28 03:16:44,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2020-11-28 03:16:44,074 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 8 [2020-11-28 03:16:44,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:16:44,074 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2020-11-28 03:16:44,074 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:16:44,075 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2020-11-28 03:16:44,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 03:16:44,075 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:16:44,075 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:16:44,076 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 03:16:44,076 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:16:44,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:44,077 INFO L82 PathProgramCache]: Analyzing trace with hash -574954344, now seen corresponding path program 1 times [2020-11-28 03:16:44,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:44,077 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631490746] [2020-11-28 03:16:44,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:44,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:44,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:16:44,190 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631490746] [2020-11-28 03:16:44,191 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:16:44,191 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 03:16:44,191 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818152575] [2020-11-28 03:16:44,191 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:16:44,192 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:16:44,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:16:44,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:16:44,193 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand 5 states. [2020-11-28 03:16:44,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:16:44,352 INFO L93 Difference]: Finished difference Result 52 states and 58 transitions. [2020-11-28 03:16:44,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 03:16:44,353 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-11-28 03:16:44,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:16:44,355 INFO L225 Difference]: With dead ends: 52 [2020-11-28 03:16:44,355 INFO L226 Difference]: Without dead ends: 49 [2020-11-28 03:16:44,356 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 [2020-11-28 03:16:44,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-11-28 03:16:44,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 30. [2020-11-28 03:16:44,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-11-28 03:16:44,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2020-11-28 03:16:44,365 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 11 [2020-11-28 03:16:44,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:16:44,365 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2020-11-28 03:16:44,365 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:16:44,365 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2020-11-28 03:16:44,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-28 03:16:44,366 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:16:44,366 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:16:44,367 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 03:16:44,367 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:16:44,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:44,368 INFO L82 PathProgramCache]: Analyzing trace with hash -1915994638, now seen corresponding path program 1 times [2020-11-28 03:16:44,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:44,369 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279547030] [2020-11-28 03:16:44,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:44,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:44,643 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:16:44,643 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279547030] [2020-11-28 03:16:44,644 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1586551636] [2020-11-28 03:16:44,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_eb626765-4c57-4a72-963d-10ccad784592/bin/uautomizer/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 [2020-11-28 03:16:44,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:44,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 34 conjunts are in the unsatisfiable core [2020-11-28 03:16:44,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:16:44,830 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 [2020-11-28 03:16:44,833 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 03:16:44,847 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 03:16:44,856 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 [2020-11-28 03:16:44,857 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-28 03:16:44,869 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 03:16:44,869 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-28 03:16:44,870 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:29, output treesize:24 [2020-11-28 03:16:44,979 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 03:16:44,980 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 [2020-11-28 03:16:44,981 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 03:16:45,035 INFO L625 ElimStorePlain]: treesize reduction 14, result has 81.1 percent of original size [2020-11-28 03:16:45,045 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-28 03:16:45,078 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 03:16:45,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-28 03:16:45,089 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 41 treesize of output 20 [2020-11-28 03:16:45,090 INFO L545 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-11-28 03:16:45,107 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 03:16:45,113 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-28 03:16:45,113 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:62, output treesize:27 [2020-11-28 03:16:45,289 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 03:16:45,289 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 [2020-11-28 03:16:45,291 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 03:16:45,342 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 03:16:45,354 INFO L441 ElimStorePlain]: Different costs {2=[|v_#memory_int_24|, |v_#memory_int_25|], 4=[|v_#memory_int_27|]} [2020-11-28 03:16:45,361 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-28 03:16:45,387 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 03:16:45,391 INFO L545 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-28 03:16:45,415 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 03:16:45,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-28 03:16:45,453 INFO L350 Elim1Store]: treesize reduction 42, result has 28.8 percent of original size [2020-11-28 03:16:45,453 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 2 case distinctions, treesize of input 52 treesize of output 45 [2020-11-28 03:16:45,454 INFO L545 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-11-28 03:16:45,494 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 03:16:45,517 INFO L545 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-1 vars, 3 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2020-11-28 03:16:45,524 INFO L244 ElimStorePlain]: Needed 5 recursive calls to eliminate 8 variables, input treesize:80, output treesize:43 [2020-11-28 03:16:45,756 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 [2020-11-28 03:16:45,759 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 03:16:45,769 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 03:16:45,771 INFO L545 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-28 03:16:45,772 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 6 variables, input treesize:45, output treesize:3 [2020-11-28 03:16:45,775 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:16:45,776 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:16:45,776 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2020-11-28 03:16:45,776 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783557640] [2020-11-28 03:16:45,777 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-28 03:16:45,777 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:16:45,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-28 03:16:45,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-11-28 03:16:45,778 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 11 states. [2020-11-28 03:16:50,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:16:50,572 INFO L93 Difference]: Finished difference Result 65 states and 74 transitions. [2020-11-28 03:16:50,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-28 03:16:50,573 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-11-28 03:16:50,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:16:50,574 INFO L225 Difference]: With dead ends: 65 [2020-11-28 03:16:50,575 INFO L226 Difference]: Without dead ends: 62 [2020-11-28 03:16:50,576 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2020-11-28 03:16:50,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-11-28 03:16:50,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 20. [2020-11-28 03:16:50,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-11-28 03:16:50,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2020-11-28 03:16:50,581 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 14 [2020-11-28 03:16:50,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:16:50,581 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2020-11-28 03:16:50,581 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-28 03:16:50,582 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2020-11-28 03:16:50,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-28 03:16:50,582 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:16:50,582 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:16:50,798 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:16:50,799 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:16:50,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:50,799 INFO L82 PathProgramCache]: Analyzing trace with hash 1796257513, now seen corresponding path program 1 times [2020-11-28 03:16:50,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:50,800 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004431586] [2020-11-28 03:16:50,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:50,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:50,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:16:50,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004431586] [2020-11-28 03:16:50,946 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:16:50,946 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 03:16:50,947 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000121832] [2020-11-28 03:16:50,947 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:16:50,947 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:16:50,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:16:50,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:16:50,948 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand 5 states. [2020-11-28 03:16:51,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:16:51,036 INFO L93 Difference]: Finished difference Result 38 states and 43 transitions. [2020-11-28 03:16:51,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:16:51,037 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-11-28 03:16:51,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:16:51,037 INFO L225 Difference]: With dead ends: 38 [2020-11-28 03:16:51,038 INFO L226 Difference]: Without dead ends: 29 [2020-11-28 03:16:51,038 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 [2020-11-28 03:16:51,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-11-28 03:16:51,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 22. [2020-11-28 03:16:51,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-11-28 03:16:51,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2020-11-28 03:16:51,042 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 16 [2020-11-28 03:16:51,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:16:51,043 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2020-11-28 03:16:51,043 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:16:51,043 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2020-11-28 03:16:51,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-28 03:16:51,043 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:16:51,044 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:16:51,044 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-28 03:16:51,044 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:16:51,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:51,044 INFO L82 PathProgramCache]: Analyzing trace with hash 1798104555, now seen corresponding path program 1 times [2020-11-28 03:16:51,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:51,045 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240626896] [2020-11-28 03:16:51,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:51,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:16:51,063 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:16:51,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:16:51,076 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:16:51,094 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:16:51,094 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 03:16:51,095 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-28 03:16:51,123 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:16:51 BoogieIcfgContainer [2020-11-28 03:16:51,123 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:16:51,124 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:16:51,124 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:16:51,124 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:16:51,124 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:16:43" (3/4) ... [2020-11-28 03:16:51,126 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 03:16:51,165 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_eb626765-4c57-4a72-963d-10ccad784592/bin/uautomizer/witness.graphml [2020-11-28 03:16:51,165 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:16:51,168 INFO L168 Benchmark]: Toolchain (without parser) took 9086.64 ms. Allocated memory was 113.2 MB in the beginning and 157.3 MB in the end (delta: 44.0 MB). Free memory was 89.0 MB in the beginning and 102.4 MB in the end (delta: -13.4 MB). Peak memory consumption was 29.9 MB. Max. memory is 16.1 GB. [2020-11-28 03:16:51,168 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 113.2 MB. Free memory is still 69.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:16:51,168 INFO L168 Benchmark]: CACSL2BoogieTranslator took 535.88 ms. Allocated memory is still 113.2 MB. Free memory was 89.0 MB in the beginning and 78.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:16:51,169 INFO L168 Benchmark]: Boogie Procedure Inliner took 60.43 ms. Allocated memory is still 113.2 MB. Free memory was 78.2 MB in the beginning and 76.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:16:51,169 INFO L168 Benchmark]: Boogie Preprocessor took 33.50 ms. Allocated memory is still 113.2 MB. Free memory was 76.1 MB in the beginning and 74.5 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:16:51,170 INFO L168 Benchmark]: RCFGBuilder took 705.38 ms. Allocated memory is still 113.2 MB. Free memory was 74.5 MB in the beginning and 51.8 MB in the end (delta: 22.7 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. [2020-11-28 03:16:51,170 INFO L168 Benchmark]: TraceAbstraction took 7703.81 ms. Allocated memory was 113.2 MB in the beginning and 157.3 MB in the end (delta: 44.0 MB). Free memory was 51.4 MB in the beginning and 104.5 MB in the end (delta: -53.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:16:51,171 INFO L168 Benchmark]: Witness Printer took 41.68 ms. Allocated memory is still 157.3 MB. Free memory was 104.5 MB in the beginning and 102.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:16:51,174 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 113.2 MB. Free memory is still 69.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 535.88 ms. Allocated memory is still 113.2 MB. Free memory was 89.0 MB in the beginning and 78.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 60.43 ms. Allocated memory is still 113.2 MB. Free memory was 78.2 MB in the beginning and 76.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 33.50 ms. Allocated memory is still 113.2 MB. Free memory was 76.1 MB in the beginning and 74.5 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 705.38 ms. Allocated memory is still 113.2 MB. Free memory was 74.5 MB in the beginning and 51.8 MB in the end (delta: 22.7 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 7703.81 ms. Allocated memory was 113.2 MB in the beginning and 157.3 MB in the end (delta: 44.0 MB). Free memory was 51.4 MB in the beginning and 104.5 MB in the end (delta: -53.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 41.68 ms. Allocated memory is still 157.3 MB. Free memory was 104.5 MB in the beginning and 102.4 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: 993]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L1006] SLL* list = malloc(sizeof(SLL)); [L1007] list->next = ((void*)0) [L1008] list->colour = BLACK [L1010] SLL* end = list; [L1013] COND FALSE !(__VERIFIER_nondet_int()) [L1034] end = ((void*)0) [L1035] end = list [L1038] COND FALSE !(!(((void*)0) != end)) [L1039] EXPR end->colour [L1039] COND FALSE !(!(BLACK == end->colour)) [L1041] COND TRUE ((void*)0) != end [L1043] EXPR end->colour [L1043] COND FALSE !(RED == end->colour) [L1049] EXPR end->next [L1049] COND TRUE !(end->next) [L993] COND FALSE !(0) [L993] __assert_fail ("0", "sll-rb-cnstr_1-2.c", 13, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 35 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 7.6s, OverallIterations: 6, TraceHistogramMax: 2, AutomataDifference: 5.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 137 SDtfs, 165 SDslu, 223 SDs, 0 SdLazy, 211 SolverSat, 45 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 4.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 46 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.8s 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, 1.5s InterpolantComputationTime, 86 NumberOfCodeBlocks, 86 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 64 ConstructedInterpolants, 6 QuantifiedInterpolants, 7926 SizeOfPredicates, 12 NumberOfNonLiveVariables, 102 ConjunctsInSsa, 34 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...