./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 69874e26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_29e31c7d-aaf1-42e8-aa7c-704cc1ddd3fd/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_29e31c7d-aaf1-42e8-aa7c-704cc1ddd3fd/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_29e31c7d-aaf1-42e8-aa7c-704cc1ddd3fd/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_29e31c7d-aaf1-42e8-aa7c-704cc1ddd3fd/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_29e31c7d-aaf1-42e8-aa7c-704cc1ddd3fd/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_29e31c7d-aaf1-42e8-aa7c-704cc1ddd3fd/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 0.2.0-69874e2 [2020-12-01 15:03:35,639 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 15:03:35,641 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 15:03:35,720 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 15:03:35,721 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 15:03:35,734 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 15:03:35,736 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 15:03:35,739 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 15:03:35,742 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 15:03:35,743 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 15:03:35,745 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 15:03:35,747 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 15:03:35,748 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 15:03:35,749 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 15:03:35,751 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 15:03:35,753 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 15:03:35,754 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 15:03:35,756 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 15:03:35,758 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 15:03:35,761 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 15:03:35,763 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 15:03:35,765 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 15:03:35,767 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 15:03:35,768 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 15:03:35,772 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 15:03:35,772 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 15:03:35,773 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 15:03:35,774 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 15:03:35,775 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 15:03:35,777 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 15:03:35,777 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 15:03:35,778 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 15:03:35,780 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 15:03:35,781 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 15:03:35,783 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 15:03:35,783 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 15:03:35,784 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 15:03:35,785 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 15:03:35,785 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 15:03:35,786 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 15:03:35,787 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 15:03:35,789 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_29e31c7d-aaf1-42e8-aa7c-704cc1ddd3fd/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-01 15:03:35,815 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 15:03:35,816 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 15:03:35,817 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 15:03:35,818 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 15:03:35,818 INFO L138 SettingsManager]: * Use SBE=true [2020-12-01 15:03:35,819 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 15:03:35,819 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 15:03:35,819 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-01 15:03:35,820 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 15:03:35,820 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 15:03:35,821 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-01 15:03:35,821 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 15:03:35,821 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-01 15:03:35,822 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 15:03:35,822 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 15:03:35,822 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 15:03:35,822 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-01 15:03:35,823 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 15:03:35,823 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-01 15:03:35,823 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 15:03:35,824 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-01 15:03:35,824 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 15:03:35,825 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 15:03:35,825 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 15:03:35,825 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-01 15:03:35,826 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-01 15:03:35,826 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-01 15:03:35,826 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-01 15:03:35,827 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-01 15:03:35,827 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_29e31c7d-aaf1-42e8-aa7c-704cc1ddd3fd/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_29e31c7d-aaf1-42e8-aa7c-704cc1ddd3fd/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0adf73b7dd596c46d6accaa4759d997d536c99cf [2020-12-01 15:03:36,103 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 15:03:36,132 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 15:03:36,135 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 15:03:36,137 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 15:03:36,138 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 15:03:36,139 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_29e31c7d-aaf1-42e8-aa7c-704cc1ddd3fd/bin/uautomizer/../../sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i [2020-12-01 15:03:36,232 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_29e31c7d-aaf1-42e8-aa7c-704cc1ddd3fd/bin/uautomizer/data/d1f05e5d1/e741c0ee70004836b00b23e24f8dfd61/FLAG1a2d06a84 [2020-12-01 15:03:36,998 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 15:03:36,998 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_29e31c7d-aaf1-42e8-aa7c-704cc1ddd3fd/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i [2020-12-01 15:03:37,023 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_29e31c7d-aaf1-42e8-aa7c-704cc1ddd3fd/bin/uautomizer/data/d1f05e5d1/e741c0ee70004836b00b23e24f8dfd61/FLAG1a2d06a84 [2020-12-01 15:03:37,252 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_29e31c7d-aaf1-42e8-aa7c-704cc1ddd3fd/bin/uautomizer/data/d1f05e5d1/e741c0ee70004836b00b23e24f8dfd61 [2020-12-01 15:03:37,255 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 15:03:37,258 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 15:03:37,262 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 15:03:37,263 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 15:03:37,267 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 15:03:37,268 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:03:37" (1/1) ... [2020-12-01 15:03:37,271 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@724f5a6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:03:37, skipping insertion in model container [2020-12-01 15:03:37,271 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:03:37" (1/1) ... [2020-12-01 15:03:37,280 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 15:03:37,344 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 15:03:37,791 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:03:37,801 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 15:03:37,850 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:03:37,900 INFO L208 MainTranslator]: Completed translation [2020-12-01 15:03:37,901 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:03:37 WrapperNode [2020-12-01 15:03:37,901 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 15:03:37,902 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 15:03:37,902 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 15:03:37,902 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 15:03:37,910 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:03:37" (1/1) ... [2020-12-01 15:03:37,925 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:03:37" (1/1) ... [2020-12-01 15:03:37,948 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 15:03:37,949 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 15:03:37,949 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 15:03:37,949 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 15:03:37,957 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:03:37" (1/1) ... [2020-12-01 15:03:37,957 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:03:37" (1/1) ... [2020-12-01 15:03:37,962 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:03:37" (1/1) ... [2020-12-01 15:03:37,962 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:03:37" (1/1) ... [2020-12-01 15:03:37,970 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:03:37" (1/1) ... [2020-12-01 15:03:37,975 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:03:37" (1/1) ... [2020-12-01 15:03:37,994 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:03:37" (1/1) ... [2020-12-01 15:03:37,997 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 15:03:37,998 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 15:03:37,998 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 15:03:37,998 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 15:03:37,999 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:03:37" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_29e31c7d-aaf1-42e8-aa7c-704cc1ddd3fd/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 [2020-12-01 15:03:38,073 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-01 15:03:38,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-01 15:03:38,074 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-01 15:03:38,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-01 15:03:38,074 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-01 15:03:38,075 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-01 15:03:38,075 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-01 15:03:38,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-01 15:03:38,075 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 15:03:38,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 15:03:38,715 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 15:03:38,719 INFO L298 CfgBuilder]: Removed 19 assume(true) statements. [2020-12-01 15:03:38,721 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:03:38 BoogieIcfgContainer [2020-12-01 15:03:38,723 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 15:03:38,725 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-01 15:03:38,725 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-01 15:03:38,729 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-01 15:03:38,729 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 03:03:37" (1/3) ... [2020-12-01 15:03:38,730 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43fea45a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 03:03:38, skipping insertion in model container [2020-12-01 15:03:38,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:03:37" (2/3) ... [2020-12-01 15:03:38,731 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43fea45a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 03:03:38, skipping insertion in model container [2020-12-01 15:03:38,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:03:38" (3/3) ... [2020-12-01 15:03:38,733 INFO L111 eAbstractionObserver]: Analyzing ICFG sll-rb-cnstr_1-2.i [2020-12-01 15:03:38,749 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-01 15:03:38,752 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-12-01 15:03:38,766 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-12-01 15:03:38,792 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-01 15:03:38,793 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-01 15:03:38,793 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-01 15:03:38,793 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-01 15:03:38,793 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-01 15:03:38,794 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-01 15:03:38,794 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-01 15:03:38,794 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-01 15:03:38,811 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-12-01 15:03:38,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-01 15:03:38,816 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:03:38,817 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:03:38,817 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:03:38,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:03:38,824 INFO L82 PathProgramCache]: Analyzing trace with hash 1819222424, now seen corresponding path program 1 times [2020-12-01 15:03:38,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:03:38,835 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885960324] [2020-12-01 15:03:38,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:03:38,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:03:39,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:03:39,059 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885960324] [2020-12-01 15:03:39,060 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:03:39,061 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-01 15:03:39,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502087579] [2020-12-01 15:03:39,068 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-01 15:03:39,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:03:39,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-01 15:03:39,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-01 15:03:39,090 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 2 states. [2020-12-01 15:03:39,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:03:39,113 INFO L93 Difference]: Finished difference Result 62 states and 99 transitions. [2020-12-01 15:03:39,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-01 15:03:39,114 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2020-12-01 15:03:39,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:03:39,124 INFO L225 Difference]: With dead ends: 62 [2020-12-01 15:03:39,124 INFO L226 Difference]: Without dead ends: 26 [2020-12-01 15:03:39,133 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 [2020-12-01 15:03:39,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-12-01 15:03:39,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-12-01 15:03:39,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-12-01 15:03:39,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2020-12-01 15:03:39,173 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 7 [2020-12-01 15:03:39,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:03:39,173 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2020-12-01 15:03:39,173 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-01 15:03:39,174 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2020-12-01 15:03:39,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-01 15:03:39,175 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:03:39,175 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:03:39,175 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-01 15:03:39,175 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:03:39,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:03:39,179 INFO L82 PathProgramCache]: Analyzing trace with hash 177875533, now seen corresponding path program 1 times [2020-12-01 15:03:39,179 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:03:39,179 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188611296] [2020-12-01 15:03:39,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:03:39,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:03:39,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:03:39,331 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188611296] [2020-12-01 15:03:39,331 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:03:39,331 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-01 15:03:39,331 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879212084] [2020-12-01 15:03:39,333 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 15:03:39,333 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:03:39,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 15:03:39,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 15:03:39,336 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand 4 states. [2020-12-01 15:03:39,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:03:39,435 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2020-12-01 15:03:39,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 15:03:39,437 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-12-01 15:03:39,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:03:39,439 INFO L225 Difference]: With dead ends: 35 [2020-12-01 15:03:39,439 INFO L226 Difference]: Without dead ends: 32 [2020-12-01 15:03:39,440 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 [2020-12-01 15:03:39,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-12-01 15:03:39,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 23. [2020-12-01 15:03:39,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-12-01 15:03:39,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2020-12-01 15:03:39,452 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 8 [2020-12-01 15:03:39,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:03:39,453 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2020-12-01 15:03:39,453 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 15:03:39,453 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2020-12-01 15:03:39,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-01 15:03:39,455 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:03:39,456 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:03:39,456 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-01 15:03:39,456 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:03:39,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:03:39,459 INFO L82 PathProgramCache]: Analyzing trace with hash -574954344, now seen corresponding path program 1 times [2020-12-01 15:03:39,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:03:39,460 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304688331] [2020-12-01 15:03:39,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:03:39,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:03:39,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:03:39,594 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304688331] [2020-12-01 15:03:39,594 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:03:39,594 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-01 15:03:39,595 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710569703] [2020-12-01 15:03:39,595 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-01 15:03:39,595 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:03:39,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-01 15:03:39,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:03:39,597 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand 5 states. [2020-12-01 15:03:39,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:03:39,713 INFO L93 Difference]: Finished difference Result 52 states and 58 transitions. [2020-12-01 15:03:39,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-01 15:03:39,714 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-12-01 15:03:39,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:03:39,715 INFO L225 Difference]: With dead ends: 52 [2020-12-01 15:03:39,716 INFO L226 Difference]: Without dead ends: 49 [2020-12-01 15:03:39,716 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 [2020-12-01 15:03:39,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-12-01 15:03:39,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 30. [2020-12-01 15:03:39,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-12-01 15:03:39,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2020-12-01 15:03:39,723 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 11 [2020-12-01 15:03:39,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:03:39,724 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2020-12-01 15:03:39,724 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-01 15:03:39,724 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2020-12-01 15:03:39,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-01 15:03:39,725 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:03:39,725 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:03:39,725 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-01 15:03:39,726 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:03:39,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:03:39,727 INFO L82 PathProgramCache]: Analyzing trace with hash -1915994638, now seen corresponding path program 1 times [2020-12-01 15:03:39,727 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:03:39,727 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723406860] [2020-12-01 15:03:39,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:03:39,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:03:39,916 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:03:39,917 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723406860] [2020-12-01 15:03:39,917 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [418676980] [2020-12-01 15:03:39,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_29e31c7d-aaf1-42e8-aa7c-704cc1ddd3fd/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 [2020-12-01 15:03:40,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:03:40,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 26 conjunts are in the unsatisfiable core [2020-12-01 15:03:40,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:03:40,078 INFO L382 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 [2020-12-01 15:03:40,079 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 15:03:40,101 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 15:03:40,111 INFO L382 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 [2020-12-01 15:03:40,112 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-01 15:03:40,123 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 15:03:40,126 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-01 15:03:40,127 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:26, output treesize:21 [2020-12-01 15:03:40,268 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 15:03:40,268 INFO L382 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 [2020-12-01 15:03:40,277 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-01 15:03:40,286 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 15:03:40,312 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 15:03:40,325 INFO L547 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-01 15:03:40,343 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 15:03:40,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-01 15:03:40,354 INFO L382 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 [2020-12-01 15:03:40,357 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-12-01 15:03:40,373 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 15:03:40,379 INFO L547 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. [2020-12-01 15:03:40,379 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:59, output treesize:24 [2020-12-01 15:03:40,542 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 15:03:40,548 INFO L382 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 [2020-12-01 15:03:40,553 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-01 15:03:40,558 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-01 15:03:40,563 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 15:03:40,606 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 15:03:40,620 INFO L443 ElimStorePlain]: Different costs {2=[|v_#memory_int_24|, |v_#memory_int_25|], 4=[|v_#memory_int_27|]} [2020-12-01 15:03:40,625 INFO L547 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-01 15:03:40,644 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 15:03:40,651 INFO L547 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-01 15:03:40,677 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 15:03:40,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-01 15:03:40,715 INFO L348 Elim1Store]: treesize reduction 42, result has 28.8 percent of original size [2020-12-01 15:03:40,716 INFO L382 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 [2020-12-01 15:03:40,722 INFO L547 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-12-01 15:03:40,743 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 15:03:40,770 INFO L547 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. [2020-12-01 15:03:40,770 INFO L244 ElimStorePlain]: Needed 5 recursive calls to eliminate 8 variables, input treesize:77, output treesize:40 [2020-12-01 15:03:41,113 INFO L382 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 37 treesize of output 13 [2020-12-01 15:03:41,121 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 15:03:41,131 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 15:03:41,133 INFO L547 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-01 15:03:41,134 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 7 variables, input treesize:49, output treesize:3 [2020-12-01 15:03:41,140 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:03:41,141 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-01 15:03:41,141 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2020-12-01 15:03:41,142 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636984106] [2020-12-01 15:03:41,143 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-01 15:03:41,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:03:41,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-01 15:03:41,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-12-01 15:03:41,146 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 11 states. [2020-12-01 15:03:41,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:03:41,899 INFO L93 Difference]: Finished difference Result 65 states and 74 transitions. [2020-12-01 15:03:41,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-01 15:03:41,900 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-12-01 15:03:41,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:03:41,901 INFO L225 Difference]: With dead ends: 65 [2020-12-01 15:03:41,901 INFO L226 Difference]: Without dead ends: 62 [2020-12-01 15:03:41,902 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2020-12-01 15:03:41,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-12-01 15:03:41,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 20. [2020-12-01 15:03:41,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-12-01 15:03:41,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2020-12-01 15:03:41,907 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 14 [2020-12-01 15:03:41,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:03:41,908 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2020-12-01 15:03:41,908 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-01 15:03:41,908 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2020-12-01 15:03:41,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-01 15:03:41,908 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:03:41,908 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:03:42,109 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:03:42,109 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:03:42,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:03:42,110 INFO L82 PathProgramCache]: Analyzing trace with hash 1796257513, now seen corresponding path program 1 times [2020-12-01 15:03:42,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:03:42,111 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007377676] [2020-12-01 15:03:42,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:03:42,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:03:42,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:03:42,278 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007377676] [2020-12-01 15:03:42,279 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:03:42,281 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-01 15:03:42,282 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878298776] [2020-12-01 15:03:42,282 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-01 15:03:42,283 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:03:42,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-01 15:03:42,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:03:42,284 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand 5 states. [2020-12-01 15:03:42,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:03:42,387 INFO L93 Difference]: Finished difference Result 38 states and 43 transitions. [2020-12-01 15:03:42,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-01 15:03:42,388 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-12-01 15:03:42,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:03:42,390 INFO L225 Difference]: With dead ends: 38 [2020-12-01 15:03:42,390 INFO L226 Difference]: Without dead ends: 29 [2020-12-01 15:03:42,391 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 [2020-12-01 15:03:42,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-12-01 15:03:42,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 22. [2020-12-01 15:03:42,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-12-01 15:03:42,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2020-12-01 15:03:42,401 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 16 [2020-12-01 15:03:42,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:03:42,401 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2020-12-01 15:03:42,401 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-01 15:03:42,401 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2020-12-01 15:03:42,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-01 15:03:42,402 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:03:42,402 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:03:42,402 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-01 15:03:42,403 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:03:42,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:03:42,403 INFO L82 PathProgramCache]: Analyzing trace with hash 1798104555, now seen corresponding path program 1 times [2020-12-01 15:03:42,404 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:03:42,404 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82856007] [2020-12-01 15:03:42,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:03:42,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 15:03:42,438 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 15:03:42,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 15:03:42,460 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 15:03:42,490 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-01 15:03:42,491 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-01 15:03:42,491 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-01 15:03:42,534 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 03:03:42 BoogieIcfgContainer [2020-12-01 15:03:42,534 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-01 15:03:42,535 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 15:03:42,536 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 15:03:42,536 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 15:03:42,536 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:03:38" (3/4) ... [2020-12-01 15:03:42,539 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-01 15:03:42,612 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_29e31c7d-aaf1-42e8-aa7c-704cc1ddd3fd/bin/uautomizer/witness.graphml [2020-12-01 15:03:42,612 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 15:03:42,614 INFO L168 Benchmark]: Toolchain (without parser) took 5355.07 ms. Allocated memory was 92.3 MB in the beginning and 136.3 MB in the end (delta: 44.0 MB). Free memory was 62.9 MB in the beginning and 59.1 MB in the end (delta: 3.8 MB). Peak memory consumption was 47.3 MB. Max. memory is 16.1 GB. [2020-12-01 15:03:42,614 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 92.3 MB. Free memory was 54.0 MB in the beginning and 53.9 MB in the end (delta: 44.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:03:42,615 INFO L168 Benchmark]: CACSL2BoogieTranslator took 638.86 ms. Allocated memory is still 92.3 MB. Free memory was 62.7 MB in the beginning and 57.5 MB in the end (delta: 5.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-01 15:03:42,615 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.24 ms. Allocated memory is still 92.3 MB. Free memory was 57.5 MB in the beginning and 55.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 15:03:42,616 INFO L168 Benchmark]: Boogie Preprocessor took 48.19 ms. Allocated memory is still 92.3 MB. Free memory was 55.4 MB in the beginning and 53.8 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:03:42,616 INFO L168 Benchmark]: RCFGBuilder took 725.45 ms. Allocated memory was 92.3 MB in the beginning and 113.2 MB in the end (delta: 21.0 MB). Free memory was 53.8 MB in the beginning and 75.5 MB in the end (delta: -21.7 MB). Peak memory consumption was 12.2 MB. Max. memory is 16.1 GB. [2020-12-01 15:03:42,617 INFO L168 Benchmark]: TraceAbstraction took 3809.78 ms. Allocated memory was 113.2 MB in the beginning and 136.3 MB in the end (delta: 23.1 MB). Free memory was 75.1 MB in the beginning and 61.1 MB in the end (delta: 13.9 MB). Peak memory consumption was 37.9 MB. Max. memory is 16.1 GB. [2020-12-01 15:03:42,617 INFO L168 Benchmark]: Witness Printer took 77.06 ms. Allocated memory is still 136.3 MB. Free memory was 61.1 MB in the beginning and 59.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 15:03:42,623 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 92.3 MB. Free memory was 54.0 MB in the beginning and 53.9 MB in the end (delta: 44.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 638.86 ms. Allocated memory is still 92.3 MB. Free memory was 62.7 MB in the beginning and 57.5 MB in the end (delta: 5.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 46.24 ms. Allocated memory is still 92.3 MB. Free memory was 57.5 MB in the beginning and 55.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 48.19 ms. Allocated memory is still 92.3 MB. Free memory was 55.4 MB in the beginning and 53.8 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 725.45 ms. Allocated memory was 92.3 MB in the beginning and 113.2 MB in the end (delta: 21.0 MB). Free memory was 53.8 MB in the beginning and 75.5 MB in the end (delta: -21.7 MB). Peak memory consumption was 12.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3809.78 ms. Allocated memory was 113.2 MB in the beginning and 136.3 MB in the end (delta: 23.1 MB). Free memory was 75.1 MB in the beginning and 61.1 MB in the end (delta: 13.9 MB). Peak memory consumption was 37.9 MB. Max. memory is 16.1 GB. * Witness Printer took 77.06 ms. Allocated memory is still 136.3 MB. Free memory was 61.1 MB in the beginning and 59.1 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: 3.7s, OverallIterations: 6, TraceHistogramMax: 2, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 137 SDtfs, 165 SDslu, 265 SDs, 0 SdLazy, 251 SolverSat, 45 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.7s 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, 1.6s InterpolantComputationTime, 86 NumberOfCodeBlocks, 86 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 64 ConstructedInterpolants, 6 QuantifiedInterpolants, 7575 SizeOfPredicates, 10 NumberOfNonLiveVariables, 102 ConjunctsInSsa, 26 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...