./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/verifythis/tree_del_iter.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9a8b2e8d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/verifythis/tree_del_iter.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3996209b60f87d3e4d0d43d86633911b8e11add8 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 0.1.25-9a8b2e8 [2020-10-20 01:10:08,629 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 01:10:08,633 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 01:10:08,673 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 01:10:08,674 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 01:10:08,686 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 01:10:08,688 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 01:10:08,692 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 01:10:08,695 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 01:10:08,697 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 01:10:08,699 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 01:10:08,701 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 01:10:08,703 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 01:10:08,705 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 01:10:08,709 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 01:10:08,710 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 01:10:08,711 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 01:10:08,712 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 01:10:08,713 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 01:10:08,715 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 01:10:08,717 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 01:10:08,718 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 01:10:08,719 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 01:10:08,720 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 01:10:08,723 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 01:10:08,723 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 01:10:08,723 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 01:10:08,724 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 01:10:08,725 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 01:10:08,726 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 01:10:08,726 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 01:10:08,727 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 01:10:08,728 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 01:10:08,728 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 01:10:08,730 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 01:10:08,739 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 01:10:08,740 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 01:10:08,741 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 01:10:08,741 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 01:10:08,742 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 01:10:08,743 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 01:10:08,744 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 01:10:08,786 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 01:10:08,786 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 01:10:08,789 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 01:10:08,790 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 01:10:08,790 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 01:10:08,790 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 01:10:08,791 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 01:10:08,791 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 01:10:08,791 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 01:10:08,791 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 01:10:08,792 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 01:10:08,793 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 01:10:08,793 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 01:10:08,793 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 01:10:08,793 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 01:10:08,794 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 01:10:08,794 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 01:10:08,794 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 01:10:08,794 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 01:10:08,795 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 01:10:08,795 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 01:10:08,795 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 01:10:08,796 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 01:10:08,796 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 01:10:08,796 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 01:10:08,797 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 01:10:08,797 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 01:10:08,797 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 01:10:08,797 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 01:10:08,797 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3996209b60f87d3e4d0d43d86633911b8e11add8 [2020-10-20 01:10:09,057 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 01:10:09,071 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 01:10:09,075 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 01:10:09,077 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 01:10:09,077 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 01:10:09,078 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/verifythis/tree_del_iter.c [2020-10-20 01:10:09,143 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ddde5c3fd/5bf8da1a416747cd9dfe228eea44d751/FLAG17d78547a [2020-10-20 01:10:09,731 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 01:10:09,733 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/verifythis/tree_del_iter.c [2020-10-20 01:10:09,743 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ddde5c3fd/5bf8da1a416747cd9dfe228eea44d751/FLAG17d78547a [2020-10-20 01:10:09,998 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ddde5c3fd/5bf8da1a416747cd9dfe228eea44d751 [2020-10-20 01:10:10,002 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 01:10:10,011 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 01:10:10,013 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 01:10:10,013 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 01:10:10,017 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 01:10:10,019 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 01:10:09" (1/1) ... [2020-10-20 01:10:10,024 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2936de78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:10:10, skipping insertion in model container [2020-10-20 01:10:10,024 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 01:10:09" (1/1) ... [2020-10-20 01:10:10,034 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 01:10:10,066 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 01:10:10,305 WARN L1500 CHandler]: Possible shadowing of function min [2020-10-20 01:10:10,321 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 01:10:10,338 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 01:10:10,368 WARN L1500 CHandler]: Possible shadowing of function min [2020-10-20 01:10:10,379 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 01:10:10,401 INFO L208 MainTranslator]: Completed translation [2020-10-20 01:10:10,401 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:10:10 WrapperNode [2020-10-20 01:10:10,402 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 01:10:10,402 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 01:10:10,402 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 01:10:10,402 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 01:10:10,410 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:10:10" (1/1) ... [2020-10-20 01:10:10,422 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:10:10" (1/1) ... [2020-10-20 01:10:10,452 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 01:10:10,453 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 01:10:10,453 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 01:10:10,453 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 01:10:10,464 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:10:10" (1/1) ... [2020-10-20 01:10:10,464 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:10:10" (1/1) ... [2020-10-20 01:10:10,469 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:10:10" (1/1) ... [2020-10-20 01:10:10,470 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:10:10" (1/1) ... [2020-10-20 01:10:10,485 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:10:10" (1/1) ... [2020-10-20 01:10:10,491 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:10:10" (1/1) ... [2020-10-20 01:10:10,494 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:10:10" (1/1) ... [2020-10-20 01:10:10,499 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 01:10:10,500 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 01:10:10,500 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 01:10:10,500 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 01:10:10,501 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:10:10" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 01:10:10,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-20 01:10:10,581 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 01:10:10,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 01:10:10,581 INFO L130 BoogieDeclarations]: Found specification of procedure min [2020-10-20 01:10:10,581 INFO L138 BoogieDeclarations]: Found implementation of procedure min [2020-10-20 01:10:10,581 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-20 01:10:10,582 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-20 01:10:10,582 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_tree [2020-10-20 01:10:10,582 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_tree [2020-10-20 01:10:10,582 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 01:10:10,582 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-20 01:10:10,582 INFO L130 BoogieDeclarations]: Found specification of procedure size [2020-10-20 01:10:10,583 INFO L138 BoogieDeclarations]: Found implementation of procedure size [2020-10-20 01:10:10,583 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 01:10:10,583 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 01:10:10,583 INFO L130 BoogieDeclarations]: Found specification of procedure tree_inorder [2020-10-20 01:10:10,583 INFO L138 BoogieDeclarations]: Found implementation of procedure tree_inorder [2020-10-20 01:10:10,584 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 01:10:11,165 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 01:10:11,166 INFO L298 CfgBuilder]: Removed 33 assume(true) statements. [2020-10-20 01:10:11,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 01:10:11 BoogieIcfgContainer [2020-10-20 01:10:11,168 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 01:10:11,169 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 01:10:11,170 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 01:10:11,173 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 01:10:11,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 01:10:09" (1/3) ... [2020-10-20 01:10:11,175 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c388da7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 01:10:11, skipping insertion in model container [2020-10-20 01:10:11,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:10:10" (2/3) ... [2020-10-20 01:10:11,175 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c388da7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 01:10:11, skipping insertion in model container [2020-10-20 01:10:11,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 01:10:11" (3/3) ... [2020-10-20 01:10:11,177 INFO L111 eAbstractionObserver]: Analyzing ICFG tree_del_iter.c [2020-10-20 01:10:11,190 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 01:10:11,198 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-10-20 01:10:11,209 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-20 01:10:11,235 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 01:10:11,235 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 01:10:11,235 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 01:10:11,235 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 01:10:11,235 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 01:10:11,236 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 01:10:11,236 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 01:10:11,236 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 01:10:11,260 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states. [2020-10-20 01:10:11,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-20 01:10:11,268 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:10:11,269 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:10:11,270 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:10:11,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:10:11,275 INFO L82 PathProgramCache]: Analyzing trace with hash -209466115, now seen corresponding path program 1 times [2020-10-20 01:10:11,292 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:10:11,293 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52344839] [2020-10-20 01:10:11,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:10:11,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:10:11,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-20 01:10:11,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:10:11,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-20 01:10:11,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:10:11,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-20 01:10:11,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:10:11,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-20 01:10:11,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:10:11,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:10:11,663 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52344839] [2020-10-20 01:10:11,664 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:10:11,666 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-20 01:10:11,667 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802212065] [2020-10-20 01:10:11,692 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-20 01:10:11,693 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:10:11,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-20 01:10:11,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-20 01:10:11,713 INFO L87 Difference]: Start difference. First operand 84 states. Second operand 7 states. [2020-10-20 01:10:12,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:10:12,102 INFO L93 Difference]: Finished difference Result 146 states and 197 transitions. [2020-10-20 01:10:12,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 01:10:12,104 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 30 [2020-10-20 01:10:12,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:10:12,118 INFO L225 Difference]: With dead ends: 146 [2020-10-20 01:10:12,119 INFO L226 Difference]: Without dead ends: 81 [2020-10-20 01:10:12,123 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-20 01:10:12,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-10-20 01:10:12,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 76. [2020-10-20 01:10:12,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-20 01:10:12,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 96 transitions. [2020-10-20 01:10:12,186 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 96 transitions. Word has length 30 [2020-10-20 01:10:12,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:10:12,186 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 96 transitions. [2020-10-20 01:10:12,186 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-20 01:10:12,187 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 96 transitions. [2020-10-20 01:10:12,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-20 01:10:12,201 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:10:12,201 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:10:12,202 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 01:10:12,202 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:10:12,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:10:12,203 INFO L82 PathProgramCache]: Analyzing trace with hash -1135307658, now seen corresponding path program 1 times [2020-10-20 01:10:12,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:10:12,203 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023347472] [2020-10-20 01:10:12,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:10:12,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:10:12,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-20 01:10:12,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:10:12,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-20 01:10:12,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:10:12,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-20 01:10:12,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:10:12,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-20 01:10:12,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:10:12,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-20 01:10:12,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:10:12,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-20 01:10:12,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:10:12,444 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-20 01:10:12,445 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023347472] [2020-10-20 01:10:12,445 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1205525169] [2020-10-20 01:10:12,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 01:10:12,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:10:12,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 25 conjunts are in the unsatisfiable core [2020-10-20 01:10:12,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 01:10:12,636 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-20 01:10:12,656 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 01:10:12,656 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 9 [2020-10-20 01:10:12,657 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275096636] [2020-10-20 01:10:12,658 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-20 01:10:12,659 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:10:12,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-20 01:10:12,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-20 01:10:12,659 INFO L87 Difference]: Start difference. First operand 76 states and 96 transitions. Second operand 9 states. [2020-10-20 01:10:13,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:10:13,121 INFO L93 Difference]: Finished difference Result 137 states and 175 transitions. [2020-10-20 01:10:13,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-20 01:10:13,138 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 42 [2020-10-20 01:10:13,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:10:13,141 INFO L225 Difference]: With dead ends: 137 [2020-10-20 01:10:13,141 INFO L226 Difference]: Without dead ends: 81 [2020-10-20 01:10:13,143 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 50 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-10-20 01:10:13,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-10-20 01:10:13,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 78. [2020-10-20 01:10:13,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-20 01:10:13,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 99 transitions. [2020-10-20 01:10:13,159 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 99 transitions. Word has length 42 [2020-10-20 01:10:13,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:10:13,160 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 99 transitions. [2020-10-20 01:10:13,160 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-20 01:10:13,160 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 99 transitions. [2020-10-20 01:10:13,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-20 01:10:13,162 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:10:13,163 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:10:13,376 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-10-20 01:10:13,377 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:10:13,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:10:13,378 INFO L82 PathProgramCache]: Analyzing trace with hash 637081529, now seen corresponding path program 1 times [2020-10-20 01:10:13,378 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:10:13,379 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416911395] [2020-10-20 01:10:13,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:10:13,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:10:13,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-20 01:10:13,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:10:13,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-20 01:10:13,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:10:13,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-20 01:10:13,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:10:13,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-20 01:10:13,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:10:13,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-20 01:10:13,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:10:13,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-20 01:10:13,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:10:13,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-20 01:10:13,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:10:13,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-20 01:10:13,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:10:13,588 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-10-20 01:10:13,589 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416911395] [2020-10-20 01:10:13,589 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:10:13,590 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-20 01:10:13,591 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386177391] [2020-10-20 01:10:13,592 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-20 01:10:13,592 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:10:13,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-20 01:10:13,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-20 01:10:13,593 INFO L87 Difference]: Start difference. First operand 78 states and 99 transitions. Second operand 10 states. [2020-10-20 01:10:13,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:10:13,993 INFO L93 Difference]: Finished difference Result 137 states and 175 transitions. [2020-10-20 01:10:13,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-20 01:10:13,994 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 52 [2020-10-20 01:10:13,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:10:13,996 INFO L225 Difference]: With dead ends: 137 [2020-10-20 01:10:13,996 INFO L226 Difference]: Without dead ends: 83 [2020-10-20 01:10:13,998 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2020-10-20 01:10:13,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-10-20 01:10:14,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 80. [2020-10-20 01:10:14,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-20 01:10:14,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 102 transitions. [2020-10-20 01:10:14,013 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 102 transitions. Word has length 52 [2020-10-20 01:10:14,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:10:14,013 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 102 transitions. [2020-10-20 01:10:14,014 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-20 01:10:14,014 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 102 transitions. [2020-10-20 01:10:14,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-20 01:10:14,016 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:10:14,017 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:10:14,017 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-20 01:10:14,017 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:10:14,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:10:14,018 INFO L82 PathProgramCache]: Analyzing trace with hash -1012320298, now seen corresponding path program 1 times [2020-10-20 01:10:14,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:10:14,019 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740579548] [2020-10-20 01:10:14,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:10:14,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:10:14,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-20 01:10:14,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:10:14,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-20 01:10:14,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:10:14,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-20 01:10:14,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:10:14,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-20 01:10:14,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:10:14,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-20 01:10:14,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:10:14,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-20 01:10:14,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:10:14,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-20 01:10:14,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:10:14,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-20 01:10:14,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:10:14,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-20 01:10:14,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:10:14,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-20 01:10:14,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:10:14,330 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-10-20 01:10:14,331 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740579548] [2020-10-20 01:10:14,331 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1690543519] [2020-10-20 01:10:14,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 01:10:14,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:10:14,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 27 conjunts are in the unsatisfiable core [2020-10-20 01:10:14,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 01:10:14,521 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-10-20 01:10:14,522 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 01:10:14,522 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 15 [2020-10-20 01:10:14,522 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007349066] [2020-10-20 01:10:14,523 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-20 01:10:14,523 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:10:14,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-20 01:10:14,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2020-10-20 01:10:14,524 INFO L87 Difference]: Start difference. First operand 80 states and 102 transitions. Second operand 15 states. [2020-10-20 01:10:15,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:10:15,304 INFO L93 Difference]: Finished difference Result 132 states and 168 transitions. [2020-10-20 01:10:15,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-20 01:10:15,305 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 65 [2020-10-20 01:10:15,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:10:15,307 INFO L225 Difference]: With dead ends: 132 [2020-10-20 01:10:15,307 INFO L226 Difference]: Without dead ends: 85 [2020-10-20 01:10:15,314 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 80 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=89, Invalid=561, Unknown=0, NotChecked=0, Total=650 [2020-10-20 01:10:15,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-10-20 01:10:15,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 84. [2020-10-20 01:10:15,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-10-20 01:10:15,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 107 transitions. [2020-10-20 01:10:15,341 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 107 transitions. Word has length 65 [2020-10-20 01:10:15,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:10:15,343 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 107 transitions. [2020-10-20 01:10:15,343 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-20 01:10:15,343 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 107 transitions. [2020-10-20 01:10:15,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-20 01:10:15,351 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:10:15,352 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:10:15,579 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 01:10:15,580 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:10:15,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:10:15,581 INFO L82 PathProgramCache]: Analyzing trace with hash 417898793, now seen corresponding path program 1 times [2020-10-20 01:10:15,582 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:10:15,582 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034802461] [2020-10-20 01:10:15,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:10:15,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 01:10:15,629 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 01:10:15,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 01:10:15,714 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 01:10:15,782 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 01:10:15,782 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 01:10:15,782 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-20 01:10:15,844 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2020-10-20 01:10:15,845 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2020-10-20 01:10:15,846 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2020-10-20 01:10:15,846 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2020-10-20 01:10:15,847 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2020-10-20 01:10:15,847 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2020-10-20 01:10:15,848 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2020-10-20 01:10:15,848 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2020-10-20 01:10:15,848 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2020-10-20 01:10:15,848 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2020-10-20 01:10:15,849 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2020-10-20 01:10:15,849 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2020-10-20 01:10:15,916 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 01:10:15 BoogieIcfgContainer [2020-10-20 01:10:15,916 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 01:10:15,917 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 01:10:15,917 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 01:10:15,917 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 01:10:15,918 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 01:10:11" (3/4) ... [2020-10-20 01:10:15,921 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-20 01:10:15,926 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2020-10-20 01:10:15,926 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2020-10-20 01:10:15,926 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2020-10-20 01:10:15,926 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2020-10-20 01:10:15,927 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2020-10-20 01:10:15,928 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2020-10-20 01:10:15,928 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2020-10-20 01:10:15,928 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2020-10-20 01:10:15,928 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2020-10-20 01:10:15,929 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2020-10-20 01:10:15,929 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2020-10-20 01:10:15,929 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2020-10-20 01:10:16,005 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 01:10:16,006 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 01:10:16,011 INFO L168 Benchmark]: Toolchain (without parser) took 6003.94 ms. Allocated memory was 42.5 MB in the beginning and 80.7 MB in the end (delta: 38.3 MB). Free memory was 21.9 MB in the beginning and 33.0 MB in the end (delta: -11.0 MB). Peak memory consumption was 27.2 MB. Max. memory is 14.3 GB. [2020-10-20 01:10:16,012 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 32.0 MB. Free memory was 9.8 MB in the beginning and 9.8 MB in the end (delta: 45.6 kB). Peak memory consumption was 45.6 kB. Max. memory is 14.3 GB. [2020-10-20 01:10:16,013 INFO L168 Benchmark]: CACSL2BoogieTranslator took 389.28 ms. Allocated memory was 42.5 MB in the beginning and 43.0 MB in the end (delta: 524.3 kB). Free memory was 21.0 MB in the beginning and 20.3 MB in the end (delta: 694.1 kB). Peak memory consumption was 12.1 MB. Max. memory is 14.3 GB. [2020-10-20 01:10:16,013 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.04 ms. Allocated memory is still 43.0 MB. Free memory was 20.3 MB in the beginning and 18.1 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 14.3 GB. [2020-10-20 01:10:16,015 INFO L168 Benchmark]: Boogie Preprocessor took 46.78 ms. Allocated memory is still 43.0 MB. Free memory was 18.1 MB in the beginning and 15.9 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 14.3 GB. [2020-10-20 01:10:16,019 INFO L168 Benchmark]: RCFGBuilder took 668.54 ms. Allocated memory was 43.0 MB in the beginning and 45.1 MB in the end (delta: 2.1 MB). Free memory was 15.7 MB in the beginning and 17.4 MB in the end (delta: -1.7 MB). Peak memory consumption was 7.8 MB. Max. memory is 14.3 GB. [2020-10-20 01:10:16,022 INFO L168 Benchmark]: TraceAbstraction took 4747.05 ms. Allocated memory was 45.1 MB in the beginning and 80.7 MB in the end (delta: 35.7 MB). Free memory was 16.8 MB in the beginning and 40.2 MB in the end (delta: -23.4 MB). Peak memory consumption was 12.3 MB. Max. memory is 14.3 GB. [2020-10-20 01:10:16,023 INFO L168 Benchmark]: Witness Printer took 88.83 ms. Allocated memory is still 80.7 MB. Free memory was 40.2 MB in the beginning and 33.0 MB in the end (delta: 7.2 MB). Peak memory consumption was 7.2 MB. Max. memory is 14.3 GB. [2020-10-20 01:10:16,028 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 32.0 MB. Free memory was 9.8 MB in the beginning and 9.8 MB in the end (delta: 45.6 kB). Peak memory consumption was 45.6 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 389.28 ms. Allocated memory was 42.5 MB in the beginning and 43.0 MB in the end (delta: 524.3 kB). Free memory was 21.0 MB in the beginning and 20.3 MB in the end (delta: 694.1 kB). Peak memory consumption was 12.1 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 50.04 ms. Allocated memory is still 43.0 MB. Free memory was 20.3 MB in the beginning and 18.1 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 46.78 ms. Allocated memory is still 43.0 MB. Free memory was 18.1 MB in the beginning and 15.9 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 14.3 GB. * RCFGBuilder took 668.54 ms. Allocated memory was 43.0 MB in the beginning and 45.1 MB in the end (delta: 2.1 MB). Free memory was 15.7 MB in the beginning and 17.4 MB in the end (delta: -1.7 MB). Peak memory consumption was 7.8 MB. Max. memory is 14.3 GB. * TraceAbstraction took 4747.05 ms. Allocated memory was 45.1 MB in the beginning and 80.7 MB in the end (delta: 35.7 MB). Free memory was 16.8 MB in the beginning and 40.2 MB in the end (delta: -23.4 MB). Peak memory consumption was 12.3 MB. Max. memory is 14.3 GB. * Witness Printer took 88.83 ms. Allocated memory is still 80.7 MB. Free memory was 40.2 MB in the beginning and 33.0 MB in the end (delta: 7.2 MB). Peak memory consumption was 7.2 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 14]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L110] CALL nondet_tree() [L25] COND FALSE !(__VERIFIER_nondet_bool()) [L28] struct node *n = (struct node *)malloc(sizeof(struct node)); [L29] n->data = __VERIFIER_nondet_int() [L30] CALL, EXPR nondet_tree() [L25] COND TRUE __VERIFIER_nondet_bool() [L26] return 0; VAL [\result={0:0}] [L30] RET, EXPR nondet_tree() VAL [malloc(sizeof(struct node))={-1:0}, n={-1:0}, nondet_tree()={0:0}] [L30] n->left = nondet_tree() [L31] CALL, EXPR nondet_tree() [L25] COND TRUE __VERIFIER_nondet_bool() [L26] return 0; VAL [\result={0:0}] [L31] RET, EXPR nondet_tree() VAL [malloc(sizeof(struct node))={-1:0}, n={-1:0}, nondet_tree()={0:0}] [L31] n->right = nondet_tree() [L32] return n; VAL [\result={-1:0}, malloc(sizeof(struct node))={-1:0}, n={-1:0}] [L110] RET nondet_tree() [L86] CALL, EXPR min(t) VAL [n={-1:0}] [L37] COND FALSE !(!n) [L40] EXPR n->data [L40] int a = n->data; [L41] EXPR n->left VAL [a=2147483647, n={-1:0}, n={-1:0}, n->left={0:0}] [L41] CALL, EXPR min(n->left) VAL [n={0:0}] [L37] COND TRUE !n [L38] return 2147483647; VAL [\result=2147483647, n={0:0}, n={0:0}] [L41] RET, EXPR min(n->left) VAL [a=2147483647, min(n->left)=2147483647, n={-1:0}, n={-1:0}, n->left={0:0}] [L41] int b = min(n->left); [L42] EXPR n->right VAL [a=2147483647, b=2147483647, n={-1:0}, n={-1:0}, n->right={0:0}] [L42] CALL, EXPR min(n->right) VAL [n={0:0}] [L37] COND TRUE !n [L38] return 2147483647; VAL [\result=2147483647, n={0:0}, n={0:0}] [L42] RET, EXPR min(n->right) VAL [a=2147483647, b=2147483647, min(n->right)=2147483647, n={-1:0}, n={-1:0}, n->right={0:0}] [L42] int c = min(n->right); [L43] COND TRUE b <= a && b <= c [L43] return b; VAL [\result=2147483647, a=2147483647, b=2147483647, c=2147483647, n={-1:0}, n={-1:0}] [L86] RET, EXPR min(t) [L86] int a = min(t); [L87] int b; [L89] CALL, EXPR size(t) VAL [t={-1:0}] [L81] COND FALSE !(!t) [L82] EXPR t->left VAL [t={-1:0}, t={-1:0}, t->left={0:0}] [L82] CALL, EXPR size(t->left) VAL [t={0:0}] [L81] COND TRUE !t [L81] return 0; VAL [\result=0, t={0:0}, t={0:0}] [L82] RET, EXPR size(t->left) VAL [size(t->left)=0, t={-1:0}, t={-1:0}, t->left={0:0}] [L82] EXPR t->right VAL [size(t->left)=0, t={-1:0}, t={-1:0}, t->left={0:0}, t->right={0:0}] [L82] CALL, EXPR size(t->right) VAL [t={0:0}] [L81] COND TRUE !t [L81] return 0; VAL [\result=0, t={0:0}, t={0:0}] [L82] RET, EXPR size(t->right) VAL [size(t->left)=0, size(t->right)=0, t={-1:0}, t={-1:0}, t->left={0:0}, t->right={0:0}] [L82] return size(t->left) + size(t->right) + 1; [L89] RET, EXPR size(t) [L89] int n = size(t); [L9] COND FALSE !(!cond) [L91] int *x = calloc(n, sizeof(int)); [L92] CALL tree_inorder(t, x, n) VAL [\old(i)=1, a={-2:0}, t={-1:0}] [L70] COND FALSE !(!t) [L73] EXPR t->left VAL [\old(i)=1, a={-2:0}, a={-2:0}, i=1, t={-1:0}, t={-1:0}, t->left={0:0}] [L73] CALL, EXPR tree_inorder(t->left, a, i) VAL [\old(i)=1, a={-2:0}, t={0:0}] [L70] COND TRUE !t [L71] return i; VAL [\old(i)=1, \result=1, a={-2:0}, a={-2:0}, i=1, t={0:0}, t={0:0}] [L73] RET, EXPR tree_inorder(t->left, a, i) VAL [\old(i)=1, a={-2:0}, a={-2:0}, i=1, t={-1:0}, t={-1:0}, t->left={0:0}, tree_inorder(t->left, a, i)=1] [L73] i = tree_inorder(t->left, a, i) [L74] EXPR i++ [L74] EXPR t->data [L74] a[i++] = t->data [L75] EXPR t->right VAL [\old(i)=1, a={-2:0}, a={-2:0}, i=2, t={-1:0}, t={-1:0}, t->right={0:0}] [L75] CALL, EXPR tree_inorder(t->right, a, i) VAL [\old(i)=2, a={-2:0}, t={0:0}] [L70] COND TRUE !t [L71] return i; VAL [\old(i)=2, \result=2, a={-2:0}, a={-2:0}, i=2, t={0:0}, t={0:0}] [L75] RET, EXPR tree_inorder(t->right, a, i) VAL [\old(i)=1, a={-2:0}, a={-2:0}, i=2, t={-1:0}, t={-1:0}, t->right={0:0}, tree_inorder(t->right, a, i)=2] [L75] i = tree_inorder(t->right, a, i) [L76] return i; VAL [\old(i)=1, \result=2, a={-2:0}, a={-2:0}, i=2, t={-1:0}, t={-1:0}] [L92] RET tree_inorder(t, x, n) [L93] x[0] [L16] COND TRUE !cond [L14] __assert_fail("0", "tree_del_iter.c", 14, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 84 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.5s, OverallIterations: 5, TraceHistogramMax: 3, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 311 SDtfs, 330 SDslu, 1436 SDs, 0 SdLazy, 1192 SolverSat, 135 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 210 GetRequests, 153 SyntacticMatches, 4 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=84occurred 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: 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 12 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 373 NumberOfCodeBlocks, 373 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 290 ConstructedInterpolants, 0 QuantifiedInterpolants, 48598 SizeOfPredicates, 16 NumberOfNonLiveVariables, 593 ConjunctsInSsa, 52 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 103/111 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...