./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/verifythis/tree_del_iter_incorrect.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30f4e4ab Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -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_incorrect.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(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d3ff8ae763cd253b2864cd8208bb318e170f6466 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 0.1.24-30f4e4a [2019-11-28 00:06:26,878 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 00:06:26,881 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 00:06:26,898 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 00:06:26,899 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 00:06:26,901 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 00:06:26,903 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 00:06:26,912 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 00:06:26,917 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 00:06:26,920 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 00:06:26,921 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 00:06:26,923 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 00:06:26,923 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 00:06:26,926 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 00:06:26,927 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 00:06:26,929 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 00:06:26,930 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 00:06:26,931 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 00:06:26,935 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 00:06:26,938 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 00:06:26,942 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 00:06:26,947 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 00:06:26,948 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 00:06:26,950 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 00:06:26,952 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 00:06:26,952 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 00:06:26,952 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 00:06:26,954 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 00:06:26,954 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 00:06:26,955 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 00:06:26,955 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 00:06:26,956 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 00:06:26,957 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 00:06:26,958 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 00:06:26,959 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 00:06:26,959 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 00:06:26,960 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 00:06:26,960 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 00:06:26,961 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 00:06:26,961 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 00:06:26,963 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 00:06:26,964 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-28 00:06:26,989 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 00:06:26,989 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 00:06:26,991 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 00:06:26,993 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 00:06:26,993 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 00:06:26,994 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 00:06:26,994 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 00:06:26,994 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 00:06:26,994 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 00:06:26,995 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 00:06:26,995 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 00:06:26,995 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 00:06:26,995 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 00:06:26,995 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 00:06:26,996 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 00:06:26,997 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 00:06:26,997 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 00:06:26,998 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 00:06:26,998 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 00:06:26,999 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 00:06:26,999 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 00:06:27,001 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 00:06:27,001 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 00:06:27,001 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 00:06:27,001 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 00:06:27,002 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 00:06:27,002 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 00:06:27,002 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 00:06:27,002 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(__VERIFIER_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 -> d3ff8ae763cd253b2864cd8208bb318e170f6466 [2019-11-28 00:06:27,291 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 00:06:27,313 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 00:06:27,317 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 00:06:27,318 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 00:06:27,318 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 00:06:27,319 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/verifythis/tree_del_iter_incorrect.c [2019-11-28 00:06:27,387 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c670b48e/9e4eed285fb444248aee5bae4d69838a/FLAGaa743f43f [2019-11-28 00:06:27,842 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 00:06:27,843 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/verifythis/tree_del_iter_incorrect.c [2019-11-28 00:06:27,849 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c670b48e/9e4eed285fb444248aee5bae4d69838a/FLAGaa743f43f [2019-11-28 00:06:28,198 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c670b48e/9e4eed285fb444248aee5bae4d69838a [2019-11-28 00:06:28,202 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 00:06:28,204 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 00:06:28,205 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 00:06:28,205 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 00:06:28,209 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 00:06:28,210 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 12:06:28" (1/1) ... [2019-11-28 00:06:28,213 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6555944c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:06:28, skipping insertion in model container [2019-11-28 00:06:28,213 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 12:06:28" (1/1) ... [2019-11-28 00:06:28,221 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 00:06:28,251 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 00:06:28,523 WARN L1484 CHandler]: Possible shadowing of function min [2019-11-28 00:06:28,565 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 00:06:28,638 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 00:06:28,662 WARN L1484 CHandler]: Possible shadowing of function min [2019-11-28 00:06:28,673 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 00:06:28,701 INFO L208 MainTranslator]: Completed translation [2019-11-28 00:06:28,701 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:06:28 WrapperNode [2019-11-28 00:06:28,701 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 00:06:28,702 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 00:06:28,702 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 00:06:28,702 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 00:06:28,715 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:06:28" (1/1) ... [2019-11-28 00:06:28,742 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:06:28" (1/1) ... [2019-11-28 00:06:28,772 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 00:06:28,773 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 00:06:28,773 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 00:06:28,773 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 00:06:28,782 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:06:28" (1/1) ... [2019-11-28 00:06:28,782 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:06:28" (1/1) ... [2019-11-28 00:06:28,787 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:06:28" (1/1) ... [2019-11-28 00:06:28,787 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:06:28" (1/1) ... [2019-11-28 00:06:28,799 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:06:28" (1/1) ... [2019-11-28 00:06:28,804 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:06:28" (1/1) ... [2019-11-28 00:06:28,807 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:06:28" (1/1) ... [2019-11-28 00:06:28,811 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 00:06:28,812 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 00:06:28,812 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 00:06:28,812 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 00:06:28,813 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:06:28" (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 [2019-11-28 00:06:28,875 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-28 00:06:28,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-28 00:06:28,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-28 00:06:28,875 INFO L130 BoogieDeclarations]: Found specification of procedure min [2019-11-28 00:06:28,876 INFO L138 BoogieDeclarations]: Found implementation of procedure min [2019-11-28 00:06:28,876 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-28 00:06:28,876 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-28 00:06:28,876 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_tree [2019-11-28 00:06:28,877 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_tree [2019-11-28 00:06:28,877 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-28 00:06:28,877 INFO L130 BoogieDeclarations]: Found specification of procedure size [2019-11-28 00:06:28,877 INFO L138 BoogieDeclarations]: Found implementation of procedure size [2019-11-28 00:06:28,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 00:06:28,878 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 00:06:28,878 INFO L130 BoogieDeclarations]: Found specification of procedure tree_inorder [2019-11-28 00:06:28,878 INFO L138 BoogieDeclarations]: Found implementation of procedure tree_inorder [2019-11-28 00:06:28,878 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-28 00:06:29,444 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 00:06:29,444 INFO L297 CfgBuilder]: Removed 22 assume(true) statements. [2019-11-28 00:06:29,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 12:06:29 BoogieIcfgContainer [2019-11-28 00:06:29,446 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 00:06:29,447 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 00:06:29,448 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 00:06:29,451 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 00:06:29,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 12:06:28" (1/3) ... [2019-11-28 00:06:29,452 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53068c85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 12:06:29, skipping insertion in model container [2019-11-28 00:06:29,453 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:06:28" (2/3) ... [2019-11-28 00:06:29,453 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53068c85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 12:06:29, skipping insertion in model container [2019-11-28 00:06:29,453 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 12:06:29" (3/3) ... [2019-11-28 00:06:29,455 INFO L109 eAbstractionObserver]: Analyzing ICFG tree_del_iter_incorrect.c [2019-11-28 00:06:29,465 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 00:06:29,473 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-11-28 00:06:29,484 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-11-28 00:06:29,505 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 00:06:29,505 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 00:06:29,506 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 00:06:29,506 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 00:06:29,506 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 00:06:29,506 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 00:06:29,506 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 00:06:29,507 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 00:06:29,526 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2019-11-28 00:06:29,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-11-28 00:06:29,534 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 00:06:29,535 INFO L410 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] [2019-11-28 00:06:29,535 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 00:06:29,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 00:06:29,540 INFO L82 PathProgramCache]: Analyzing trace with hash -1356719622, now seen corresponding path program 1 times [2019-11-28 00:06:29,546 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 00:06:29,547 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329114981] [2019-11-28 00:06:29,547 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 00:06:29,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:06:29,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:06:29,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:06:29,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:06:29,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:06:29,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 00:06:29,909 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329114981] [2019-11-28 00:06:29,911 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 00:06:29,914 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-28 00:06:29,915 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818156032] [2019-11-28 00:06:29,921 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-28 00:06:29,922 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 00:06:29,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-28 00:06:29,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-11-28 00:06:29,942 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 6 states. [2019-11-28 00:06:30,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 00:06:30,293 INFO L93 Difference]: Finished difference Result 136 states and 182 transitions. [2019-11-28 00:06:30,294 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 00:06:30,295 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2019-11-28 00:06:30,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 00:06:30,308 INFO L225 Difference]: With dead ends: 136 [2019-11-28 00:06:30,308 INFO L226 Difference]: Without dead ends: 78 [2019-11-28 00:06:30,312 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-11-28 00:06:30,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2019-11-28 00:06:30,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 73. [2019-11-28 00:06:30,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2019-11-28 00:06:30,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 92 transitions. [2019-11-28 00:06:30,373 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 92 transitions. Word has length 28 [2019-11-28 00:06:30,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 00:06:30,374 INFO L462 AbstractCegarLoop]: Abstraction has 73 states and 92 transitions. [2019-11-28 00:06:30,375 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-28 00:06:30,375 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 92 transitions. [2019-11-28 00:06:30,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2019-11-28 00:06:30,378 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 00:06:30,379 INFO L410 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] [2019-11-28 00:06:30,379 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 00:06:30,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 00:06:30,380 INFO L82 PathProgramCache]: Analyzing trace with hash 1337389131, now seen corresponding path program 1 times [2019-11-28 00:06:30,380 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 00:06:30,381 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861101912] [2019-11-28 00:06:30,381 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 00:06:30,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:06:30,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:06:30,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:06:30,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:06:30,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:06:30,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:06:30,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:06:30,625 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-28 00:06:30,625 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861101912] [2019-11-28 00:06:30,626 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1290242466] [2019-11-28 00:06:30,626 INFO L94 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 [2019-11-28 00:06:30,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:06:30,726 INFO L255 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 25 conjunts are in the unsatisfiable core [2019-11-28 00:06:30,737 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 00:06:30,801 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-28 00:06:30,802 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 00:06:30,803 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 9 [2019-11-28 00:06:30,804 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700056410] [2019-11-28 00:06:30,807 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-28 00:06:30,808 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 00:06:30,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-28 00:06:30,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2019-11-28 00:06:30,810 INFO L87 Difference]: Start difference. First operand 73 states and 92 transitions. Second operand 9 states. [2019-11-28 00:06:31,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 00:06:31,247 INFO L93 Difference]: Finished difference Result 132 states and 169 transitions. [2019-11-28 00:06:31,247 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-28 00:06:31,248 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 40 [2019-11-28 00:06:31,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 00:06:31,250 INFO L225 Difference]: With dead ends: 132 [2019-11-28 00:06:31,251 INFO L226 Difference]: Without dead ends: 78 [2019-11-28 00:06:31,253 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 48 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2019-11-28 00:06:31,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2019-11-28 00:06:31,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 75. [2019-11-28 00:06:31,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2019-11-28 00:06:31,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 95 transitions. [2019-11-28 00:06:31,268 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 95 transitions. Word has length 40 [2019-11-28 00:06:31,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 00:06:31,268 INFO L462 AbstractCegarLoop]: Abstraction has 75 states and 95 transitions. [2019-11-28 00:06:31,268 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-28 00:06:31,269 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 95 transitions. [2019-11-28 00:06:31,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2019-11-28 00:06:31,273 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 00:06:31,273 INFO L410 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] [2019-11-28 00:06:31,480 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 00:06:31,481 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 00:06:31,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 00:06:31,482 INFO L82 PathProgramCache]: Analyzing trace with hash -1495057778, now seen corresponding path program 1 times [2019-11-28 00:06:31,483 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 00:06:31,483 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138689524] [2019-11-28 00:06:31,483 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 00:06:31,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:06:31,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:06:31,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:06:31,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:06:31,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:06:31,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:06:31,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:06:31,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:06:31,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:06:31,765 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-11-28 00:06:31,766 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138689524] [2019-11-28 00:06:31,766 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 00:06:31,766 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-11-28 00:06:31,766 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664749163] [2019-11-28 00:06:31,768 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-28 00:06:31,768 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 00:06:31,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-28 00:06:31,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2019-11-28 00:06:31,770 INFO L87 Difference]: Start difference. First operand 75 states and 95 transitions. Second operand 10 states. [2019-11-28 00:06:32,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 00:06:32,225 INFO L93 Difference]: Finished difference Result 132 states and 169 transitions. [2019-11-28 00:06:32,226 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-28 00:06:32,226 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 50 [2019-11-28 00:06:32,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 00:06:32,233 INFO L225 Difference]: With dead ends: 132 [2019-11-28 00:06:32,233 INFO L226 Difference]: Without dead ends: 80 [2019-11-28 00:06:32,234 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2019-11-28 00:06:32,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2019-11-28 00:06:32,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 77. [2019-11-28 00:06:32,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2019-11-28 00:06:32,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 98 transitions. [2019-11-28 00:06:32,271 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 98 transitions. Word has length 50 [2019-11-28 00:06:32,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 00:06:32,273 INFO L462 AbstractCegarLoop]: Abstraction has 77 states and 98 transitions. [2019-11-28 00:06:32,273 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-28 00:06:32,274 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 98 transitions. [2019-11-28 00:06:32,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2019-11-28 00:06:32,278 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 00:06:32,278 INFO L410 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] [2019-11-28 00:06:32,279 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 00:06:32,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 00:06:32,280 INFO L82 PathProgramCache]: Analyzing trace with hash -1674887080, now seen corresponding path program 1 times [2019-11-28 00:06:32,280 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 00:06:32,280 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108921841] [2019-11-28 00:06:32,281 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 00:06:32,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:06:32,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:06:32,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:06:32,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:06:32,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:06:32,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:06:32,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:06:32,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:06:32,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:06:32,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:06:32,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:06:32,719 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2019-11-28 00:06:32,720 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108921841] [2019-11-28 00:06:32,720 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1311354846] [2019-11-28 00:06:32,721 INFO L94 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 [2019-11-28 00:06:32,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:06:32,829 INFO L255 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 17 conjunts are in the unsatisfiable core [2019-11-28 00:06:32,834 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 00:06:32,929 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-11-28 00:06:32,929 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-28 00:06:32,930 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [14] total 17 [2019-11-28 00:06:32,930 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129734931] [2019-11-28 00:06:32,931 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-28 00:06:32,931 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 00:06:32,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-28 00:06:32,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2019-11-28 00:06:32,932 INFO L87 Difference]: Start difference. First operand 77 states and 98 transitions. Second operand 8 states. [2019-11-28 00:06:33,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 00:06:33,124 INFO L93 Difference]: Finished difference Result 126 states and 160 transitions. [2019-11-28 00:06:33,124 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-28 00:06:33,124 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 63 [2019-11-28 00:06:33,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 00:06:33,126 INFO L225 Difference]: With dead ends: 126 [2019-11-28 00:06:33,131 INFO L226 Difference]: Without dead ends: 79 [2019-11-28 00:06:33,132 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=335, Unknown=0, NotChecked=0, Total=380 [2019-11-28 00:06:33,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2019-11-28 00:06:33,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2019-11-28 00:06:33,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2019-11-28 00:06:33,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 102 transitions. [2019-11-28 00:06:33,154 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 102 transitions. Word has length 63 [2019-11-28 00:06:33,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 00:06:33,155 INFO L462 AbstractCegarLoop]: Abstraction has 79 states and 102 transitions. [2019-11-28 00:06:33,155 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-28 00:06:33,155 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 102 transitions. [2019-11-28 00:06:33,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2019-11-28 00:06:33,158 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 00:06:33,158 INFO L410 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] [2019-11-28 00:06:33,369 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 00:06:33,370 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 00:06:33,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 00:06:33,370 INFO L82 PathProgramCache]: Analyzing trace with hash 1897149291, now seen corresponding path program 1 times [2019-11-28 00:06:33,371 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 00:06:33,371 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139383329] [2019-11-28 00:06:33,371 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 00:06:33,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 00:06:33,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 00:06:33,523 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 00:06:33,524 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-28 00:06:33,563 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2019-11-28 00:06:33,564 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2019-11-28 00:06:33,565 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2019-11-28 00:06:33,565 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2019-11-28 00:06:33,570 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2019-11-28 00:06:33,570 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2019-11-28 00:06:33,573 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2019-11-28 00:06:33,573 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2019-11-28 00:06:33,574 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2019-11-28 00:06:33,574 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2019-11-28 00:06:33,576 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2019-11-28 00:06:33,576 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2019-11-28 00:06:33,608 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 12:06:33 BoogieIcfgContainer [2019-11-28 00:06:33,609 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 00:06:33,609 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 00:06:33,609 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 00:06:33,609 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 00:06:33,610 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 12:06:29" (3/4) ... [2019-11-28 00:06:33,612 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-28 00:06:33,616 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2019-11-28 00:06:33,616 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2019-11-28 00:06:33,616 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2019-11-28 00:06:33,617 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2019-11-28 00:06:33,618 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2019-11-28 00:06:33,618 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2019-11-28 00:06:33,618 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2019-11-28 00:06:33,618 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2019-11-28 00:06:33,619 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2019-11-28 00:06:33,619 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2019-11-28 00:06:33,619 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2019-11-28 00:06:33,619 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2019-11-28 00:06:33,710 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 00:06:33,711 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 00:06:33,713 INFO L168 Benchmark]: Toolchain (without parser) took 5509.14 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 226.5 MB). Free memory was 956.3 MB in the beginning and 1.1 GB in the end (delta: -148.2 MB). Peak memory consumption was 78.3 MB. Max. memory is 11.5 GB. [2019-11-28 00:06:33,714 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 00:06:33,715 INFO L168 Benchmark]: CACSL2BoogieTranslator took 496.70 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.3 MB). Free memory was 956.3 MB in the beginning and 1.1 GB in the end (delta: -181.2 MB). Peak memory consumption was 20.4 MB. Max. memory is 11.5 GB. [2019-11-28 00:06:33,715 INFO L168 Benchmark]: Boogie Procedure Inliner took 70.76 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 00:06:33,716 INFO L168 Benchmark]: Boogie Preprocessor took 38.50 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-11-28 00:06:33,717 INFO L168 Benchmark]: RCFGBuilder took 634.59 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 32.3 MB). Peak memory consumption was 32.3 MB. Max. memory is 11.5 GB. [2019-11-28 00:06:33,718 INFO L168 Benchmark]: TraceAbstraction took 4161.43 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 79.2 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -13.7 MB). Peak memory consumption was 65.5 MB. Max. memory is 11.5 GB. [2019-11-28 00:06:33,718 INFO L168 Benchmark]: Witness Printer took 101.86 ms. Allocated memory is still 1.3 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 7.8 MB). Peak memory consumption was 7.8 MB. Max. memory is 11.5 GB. [2019-11-28 00:06:33,722 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 496.70 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.3 MB). Free memory was 956.3 MB in the beginning and 1.1 GB in the end (delta: -181.2 MB). Peak memory consumption was 20.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 70.76 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 38.50 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 634.59 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 32.3 MB). Peak memory consumption was 32.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4161.43 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 79.2 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -13.7 MB). Peak memory consumption was 65.5 MB. Max. memory is 11.5 GB. * Witness Printer took 101.86 ms. Allocated memory is still 1.3 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 7.8 MB). Peak memory consumption was 7.8 MB. Max. memory is 11.5 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: 11]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L100] CALL nondet_tree() [L20] COND FALSE !(__VERIFIER_nondet_bool()) [L23] struct node *n = (struct node *)malloc(sizeof(struct node)); [L24] n->data = __VERIFIER_nondet_int() [L25] CALL, EXPR nondet_tree() [L20] COND TRUE __VERIFIER_nondet_bool() [L21] return 0; VAL [\result={0:0}] [L25] RET, EXPR nondet_tree() VAL [malloc(sizeof(struct node))={-2:0}, n={-2:0}, nondet_tree()={0:0}] [L25] n->left = nondet_tree() [L26] CALL, EXPR nondet_tree() [L20] COND TRUE __VERIFIER_nondet_bool() [L21] return 0; VAL [\result={0:0}] [L26] RET, EXPR nondet_tree() VAL [malloc(sizeof(struct node))={-2:0}, n={-2:0}, nondet_tree()={0:0}] [L26] n->right = nondet_tree() [L27] return n; VAL [\result={-2:0}, malloc(sizeof(struct node))={-2:0}, n={-2:0}] [L100] RET nondet_tree() [L78] CALL, EXPR min(t) VAL [n={-2:0}] [L32] COND FALSE !(!n) [L35] EXPR n->left VAL [n={-2:0}, n={-2:0}, n->left={0:0}] [L35] CALL, EXPR min(n->left) VAL [n={0:0}] [L32] COND TRUE !n [L33] return 2147483647; VAL [\result=2147483647, n={0:0}, n={0:0}] [L35] RET, EXPR min(n->left) VAL [min(n->left)=2147483647, n={-2:0}, n={-2:0}, n->left={0:0}] [L35] int a = min(n->left); [L36] EXPR n->right VAL [a=2147483647, n={-2:0}, n={-2:0}, n->right={0:0}] [L36] CALL, EXPR min(n->right) VAL [n={0:0}] [L32] COND TRUE !n [L33] return 2147483647; VAL [\result=2147483647, n={0:0}, n={0:0}] [L36] RET, EXPR min(n->right) VAL [a=2147483647, min(n->right)=2147483647, n={-2:0}, n={-2:0}, n->right={0:0}] [L36] int b = min(n->right); [L37] COND TRUE a <= b [L37] return a; VAL [\result=2147483647, a=2147483647, b=2147483647, n={-2:0}, n={-2:0}] [L78] RET, EXPR min(t) [L78] int a = min(t); [L79] int b; [L81] CALL, EXPR size(t) VAL [t={-2:0}] [L73] COND FALSE !(!t) [L74] EXPR t->left VAL [t={-2:0}, t={-2:0}, t->left={0:0}] [L74] CALL, EXPR size(t->left) VAL [t={0:0}] [L73] COND TRUE !t [L73] return 0; VAL [\result=0, t={0:0}, t={0:0}] [L74] RET, EXPR size(t->left) VAL [size(t->left)=0, t={-2:0}, t={-2:0}, t->left={0:0}] [L74] EXPR t->right VAL [size(t->left)=0, t={-2:0}, t={-2:0}, t->left={0:0}, t->right={0:0}] [L74] CALL, EXPR size(t->right) VAL [t={0:0}] [L73] COND TRUE !t [L73] return 0; VAL [\result=0, t={0:0}, t={0:0}] [L74] RET, EXPR size(t->right) VAL [size(t->left)=0, size(t->right)=0, t={-2:0}, t={-2:0}, t->left={0:0}, t->right={0:0}] [L74] return size(t->left) + size(t->right) + 1; [L81] RET, EXPR size(t) [L81] int n = size(t); [L83] int *x = calloc(n, sizeof(int)); [L84] CALL tree_inorder(t, x, n) VAL [\old(i)=1, a={-1:0}, t={-2:0}] [L62] COND FALSE !(!t) [L65] EXPR t->left VAL [\old(i)=1, a={-1:0}, a={-1:0}, i=1, t={-2:0}, t={-2:0}, t->left={0:0}] [L65] CALL, EXPR tree_inorder(t->left, a, i) VAL [\old(i)=1, a={-1:0}, t={0:0}] [L62] COND TRUE !t [L63] return i; VAL [\old(i)=1, \result=1, a={-1:0}, a={-1:0}, i=1, t={0:0}, t={0:0}] [L65] RET, EXPR tree_inorder(t->left, a, i) VAL [\old(i)=1, a={-1:0}, a={-1:0}, i=1, t={-2:0}, t={-2:0}, t->left={0:0}, tree_inorder(t->left, a, i)=1] [L65] i = tree_inorder(t->left, a, i) [L66] EXPR i++ [L66] EXPR t->data [L66] a[i++] = t->data [L67] EXPR t->right VAL [\old(i)=1, a={-1:0}, a={-1:0}, i=2, t={-2:0}, t={-2:0}, t->right={0:0}] [L67] CALL, EXPR tree_inorder(t->right, a, i) VAL [\old(i)=2, a={-1:0}, t={0:0}] [L62] COND TRUE !t [L63] return i; VAL [\old(i)=2, \result=2, a={-1:0}, a={-1:0}, i=2, t={0:0}, t={0:0}] [L67] RET, EXPR tree_inorder(t->right, a, i) VAL [\old(i)=1, a={-1:0}, a={-1:0}, i=2, t={-2:0}, t={-2:0}, t->right={0:0}, tree_inorder(t->right, a, i)=2] [L67] i = tree_inorder(t->right, a, i) [L68] return i; VAL [\old(i)=1, \result=2, a={-1:0}, a={-1:0}, i=2, t={-2:0}, t={-2:0}] [L84] RET tree_inorder(t, x, n) [L85] x[0] [L11] COND TRUE !cond [L11] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 76 locations, 4 error locations. Result: UNSAFE, OverallTime: 4.0s, OverallIterations: 5, TraceHistogramMax: 3, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 308 SDtfs, 234 SDslu, 1213 SDs, 0 SdLazy, 649 SolverSat, 104 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 197 GetRequests, 148 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=79occurred in iteration=4, 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, 11 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 359 NumberOfCodeBlocks, 359 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 278 ConstructedInterpolants, 0 QuantifiedInterpolants, 43128 SizeOfPredicates, 13 NumberOfNonLiveVariables, 536 ConjunctsInSsa, 42 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 105/111 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...