./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/verifythis/tree_del_rec_incorrect.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_a402bdbf-60b3-46e4-a8d6-9f6c86075f4f/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_a402bdbf-60b3-46e4-a8d6-9f6c86075f4f/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_a402bdbf-60b3-46e4-a8d6-9f6c86075f4f/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_a402bdbf-60b3-46e4-a8d6-9f6c86075f4f/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/verifythis/tree_del_rec_incorrect.c -s /tmp/vcloud-vcloud-master/worker/run_dir_a402bdbf-60b3-46e4-a8d6-9f6c86075f4f/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_a402bdbf-60b3-46e4-a8d6-9f6c86075f4f/bin/uautomizer --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 a15135be85f1667031698ec5147a101594d0ac7b ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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-f470102 [2019-12-07 12:57:07,181 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 12:57:07,182 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 12:57:07,190 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 12:57:07,190 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 12:57:07,191 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 12:57:07,191 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 12:57:07,193 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 12:57:07,194 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 12:57:07,195 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 12:57:07,195 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 12:57:07,196 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 12:57:07,196 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 12:57:07,197 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 12:57:07,198 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 12:57:07,198 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 12:57:07,199 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 12:57:07,200 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 12:57:07,201 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 12:57:07,203 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 12:57:07,204 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 12:57:07,205 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 12:57:07,205 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 12:57:07,206 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 12:57:07,208 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 12:57:07,208 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 12:57:07,208 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 12:57:07,208 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 12:57:07,209 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 12:57:07,209 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 12:57:07,209 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 12:57:07,210 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 12:57:07,210 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 12:57:07,211 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 12:57:07,211 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 12:57:07,212 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 12:57:07,212 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 12:57:07,212 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 12:57:07,212 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 12:57:07,213 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 12:57:07,213 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 12:57:07,214 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_a402bdbf-60b3-46e4-a8d6-9f6c86075f4f/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-12-07 12:57:07,224 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 12:57:07,224 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 12:57:07,224 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 12:57:07,225 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 12:57:07,225 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 12:57:07,225 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 12:57:07,225 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 12:57:07,225 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 12:57:07,225 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 12:57:07,226 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 12:57:07,226 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 12:57:07,226 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 12:57:07,226 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 12:57:07,226 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 12:57:07,226 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 12:57:07,226 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 12:57:07,226 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 12:57:07,227 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 12:57:07,227 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 12:57:07,227 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 12:57:07,227 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 12:57:07,227 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 12:57:07,227 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 12:57:07,228 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 12:57:07,228 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 12:57:07,228 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 12:57:07,228 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 12:57:07,228 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 12:57:07,228 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 12:57:07,228 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 -> /tmp/vcloud-vcloud-master/worker/run_dir_a402bdbf-60b3-46e4-a8d6-9f6c86075f4f/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__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 -> a15135be85f1667031698ec5147a101594d0ac7b [2019-12-07 12:57:07,336 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 12:57:07,344 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 12:57:07,346 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 12:57:07,347 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 12:57:07,347 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 12:57:07,348 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_a402bdbf-60b3-46e4-a8d6-9f6c86075f4f/bin/uautomizer/../../sv-benchmarks/c/verifythis/tree_del_rec_incorrect.c [2019-12-07 12:57:07,383 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a402bdbf-60b3-46e4-a8d6-9f6c86075f4f/bin/uautomizer/data/acb2b6b5f/08bebd7519ce4261ade8890013b46898/FLAG67e3770f5 [2019-12-07 12:57:07,692 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 12:57:07,693 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_a402bdbf-60b3-46e4-a8d6-9f6c86075f4f/sv-benchmarks/c/verifythis/tree_del_rec_incorrect.c [2019-12-07 12:57:07,697 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a402bdbf-60b3-46e4-a8d6-9f6c86075f4f/bin/uautomizer/data/acb2b6b5f/08bebd7519ce4261ade8890013b46898/FLAG67e3770f5 [2019-12-07 12:57:07,706 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_a402bdbf-60b3-46e4-a8d6-9f6c86075f4f/bin/uautomizer/data/acb2b6b5f/08bebd7519ce4261ade8890013b46898 [2019-12-07 12:57:07,708 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 12:57:07,709 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 12:57:07,709 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 12:57:07,709 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 12:57:07,712 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 12:57:07,712 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:57:07" (1/1) ... [2019-12-07 12:57:07,714 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51f9858b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:57:07, skipping insertion in model container [2019-12-07 12:57:07,715 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:57:07" (1/1) ... [2019-12-07 12:57:07,719 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 12:57:07,733 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 12:57:07,869 WARN L1484 CHandler]: Possible shadowing of function min [2019-12-07 12:57:07,870 WARN L1484 CHandler]: Possible shadowing of function min [2019-12-07 12:57:07,881 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 12:57:07,890 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 12:57:07,902 WARN L1484 CHandler]: Possible shadowing of function min [2019-12-07 12:57:07,902 WARN L1484 CHandler]: Possible shadowing of function min [2019-12-07 12:57:07,909 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 12:57:07,922 INFO L208 MainTranslator]: Completed translation [2019-12-07 12:57:07,922 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:57:07 WrapperNode [2019-12-07 12:57:07,922 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 12:57:07,923 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 12:57:07,923 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 12:57:07,923 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 12:57:07,928 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:57:07" (1/1) ... [2019-12-07 12:57:07,936 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:57:07" (1/1) ... [2019-12-07 12:57:07,951 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 12:57:07,952 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 12:57:07,952 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 12:57:07,952 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 12:57:07,958 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:57:07" (1/1) ... [2019-12-07 12:57:07,958 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:57:07" (1/1) ... [2019-12-07 12:57:07,961 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:57:07" (1/1) ... [2019-12-07 12:57:07,961 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:57:07" (1/1) ... [2019-12-07 12:57:07,968 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:57:07" (1/1) ... [2019-12-07 12:57:07,971 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:57:07" (1/1) ... [2019-12-07 12:57:07,973 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:57:07" (1/1) ... [2019-12-07 12:57:07,976 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 12:57:07,976 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 12:57:07,976 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 12:57:07,976 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 12:57:07,977 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:57:07" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a402bdbf-60b3-46e4-a8d6-9f6c86075f4f/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 12:57:08,016 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 12:57:08,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-12-07 12:57:08,016 INFO L130 BoogieDeclarations]: Found specification of procedure tree_del [2019-12-07 12:57:08,017 INFO L138 BoogieDeclarations]: Found implementation of procedure tree_del [2019-12-07 12:57:08,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-07 12:57:08,017 INFO L130 BoogieDeclarations]: Found specification of procedure min [2019-12-07 12:57:08,017 INFO L138 BoogieDeclarations]: Found implementation of procedure min [2019-12-07 12:57:08,017 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-07 12:57:08,017 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-12-07 12:57:08,017 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_tree [2019-12-07 12:57:08,017 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_tree [2019-12-07 12:57:08,017 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-12-07 12:57:08,017 INFO L130 BoogieDeclarations]: Found specification of procedure size [2019-12-07 12:57:08,017 INFO L138 BoogieDeclarations]: Found implementation of procedure size [2019-12-07 12:57:08,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 12:57:08,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 12:57:08,018 INFO L130 BoogieDeclarations]: Found specification of procedure tree_inorder [2019-12-07 12:57:08,018 INFO L138 BoogieDeclarations]: Found implementation of procedure tree_inorder [2019-12-07 12:57:08,018 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 12:57:08,264 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 12:57:08,265 INFO L287 CfgBuilder]: Removed 19 assume(true) statements. [2019-12-07 12:57:08,266 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:57:08 BoogieIcfgContainer [2019-12-07 12:57:08,266 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 12:57:08,267 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 12:57:08,267 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 12:57:08,269 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 12:57:08,270 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 12:57:07" (1/3) ... [2019-12-07 12:57:08,270 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4174eea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 12:57:08, skipping insertion in model container [2019-12-07 12:57:08,271 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:57:07" (2/3) ... [2019-12-07 12:57:08,271 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4174eea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 12:57:08, skipping insertion in model container [2019-12-07 12:57:08,271 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:57:08" (3/3) ... [2019-12-07 12:57:08,272 INFO L109 eAbstractionObserver]: Analyzing ICFG tree_del_rec_incorrect.c [2019-12-07 12:57:08,281 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 12:57:08,287 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-12-07 12:57:08,298 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-12-07 12:57:08,315 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 12:57:08,315 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 12:57:08,315 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 12:57:08,315 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 12:57:08,315 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 12:57:08,315 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 12:57:08,315 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 12:57:08,315 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 12:57:08,329 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states. [2019-12-07 12:57:08,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-12-07 12:57:08,334 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:57:08,335 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] [2019-12-07 12:57:08,335 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 12:57:08,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:57:08,339 INFO L82 PathProgramCache]: Analyzing trace with hash 1650636720, now seen corresponding path program 1 times [2019-12-07 12:57:08,344 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:57:08,344 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144852028] [2019-12-07 12:57:08,345 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:57:08,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:57:08,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:57:08,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:57:08,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:57:08,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:57:08,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:57:08,543 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144852028] [2019-12-07 12:57:08,544 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 12:57:08,544 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-12-07 12:57:08,544 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101523870] [2019-12-07 12:57:08,547 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 12:57:08,547 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 12:57:08,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 12:57:08,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-12-07 12:57:08,558 INFO L87 Difference]: Start difference. First operand 79 states. Second operand 6 states. [2019-12-07 12:57:08,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:57:08,757 INFO L93 Difference]: Finished difference Result 142 states and 186 transitions. [2019-12-07 12:57:08,758 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 12:57:08,759 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2019-12-07 12:57:08,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 12:57:08,768 INFO L225 Difference]: With dead ends: 142 [2019-12-07 12:57:08,768 INFO L226 Difference]: Without dead ends: 81 [2019-12-07 12:57:08,770 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-12-07 12:57:08,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2019-12-07 12:57:08,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 76. [2019-12-07 12:57:08,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2019-12-07 12:57:08,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 95 transitions. [2019-12-07 12:57:08,805 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 95 transitions. Word has length 28 [2019-12-07 12:57:08,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 12:57:08,805 INFO L462 AbstractCegarLoop]: Abstraction has 76 states and 95 transitions. [2019-12-07 12:57:08,806 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 12:57:08,806 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 95 transitions. [2019-12-07 12:57:08,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2019-12-07 12:57:08,808 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:57:08,808 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] [2019-12-07 12:57:08,808 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 12:57:08,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:57:08,808 INFO L82 PathProgramCache]: Analyzing trace with hash 1726296733, now seen corresponding path program 1 times [2019-12-07 12:57:08,808 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:57:08,809 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436682863] [2019-12-07 12:57:08,809 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:57:08,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:57:08,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:57:08,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:57:08,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:57:08,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:57:08,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:57:08,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:57:08,949 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-12-07 12:57:08,949 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436682863] [2019-12-07 12:57:08,950 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1232254975] [2019-12-07 12:57:08,950 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a402bdbf-60b3-46e4-a8d6-9f6c86075f4f/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 12:57:08,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:57:09,000 INFO L264 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 25 conjunts are in the unsatisfiable core [2019-12-07 12:57:09,005 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:57:09,041 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-12-07 12:57:09,042 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 12:57:09,042 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7] total 11 [2019-12-07 12:57:09,042 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546735394] [2019-12-07 12:57:09,043 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-12-07 12:57:09,043 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 12:57:09,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-12-07 12:57:09,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2019-12-07 12:57:09,044 INFO L87 Difference]: Start difference. First operand 76 states and 95 transitions. Second operand 11 states. [2019-12-07 12:57:09,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:57:09,364 INFO L93 Difference]: Finished difference Result 138 states and 175 transitions. [2019-12-07 12:57:09,365 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-12-07 12:57:09,365 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 40 [2019-12-07 12:57:09,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 12:57:09,368 INFO L225 Difference]: With dead ends: 138 [2019-12-07 12:57:09,368 INFO L226 Difference]: Without dead ends: 81 [2019-12-07 12:57:09,370 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 47 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2019-12-07 12:57:09,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2019-12-07 12:57:09,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 78. [2019-12-07 12:57:09,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2019-12-07 12:57:09,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 98 transitions. [2019-12-07 12:57:09,383 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 98 transitions. Word has length 40 [2019-12-07 12:57:09,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 12:57:09,383 INFO L462 AbstractCegarLoop]: Abstraction has 78 states and 98 transitions. [2019-12-07 12:57:09,383 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-12-07 12:57:09,384 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 98 transitions. [2019-12-07 12:57:09,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2019-12-07 12:57:09,386 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:57:09,386 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] [2019-12-07 12:57:09,587 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 12:57:09,588 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 12:57:09,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:57:09,590 INFO L82 PathProgramCache]: Analyzing trace with hash 1468417888, now seen corresponding path program 1 times [2019-12-07 12:57:09,590 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:57:09,591 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320914695] [2019-12-07 12:57:09,592 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:57:09,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:57:09,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:57:09,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:57:09,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:57:09,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:57:09,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:57:09,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:57:09,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:57:09,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:57:09,763 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-12-07 12:57:09,764 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320914695] [2019-12-07 12:57:09,764 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 12:57:09,764 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-12-07 12:57:09,764 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044228724] [2019-12-07 12:57:09,765 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-12-07 12:57:09,765 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 12:57:09,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-12-07 12:57:09,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2019-12-07 12:57:09,765 INFO L87 Difference]: Start difference. First operand 78 states and 98 transitions. Second operand 10 states. [2019-12-07 12:57:10,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:57:10,006 INFO L93 Difference]: Finished difference Result 138 states and 175 transitions. [2019-12-07 12:57:10,007 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-12-07 12:57:10,007 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 50 [2019-12-07 12:57:10,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 12:57:10,008 INFO L225 Difference]: With dead ends: 138 [2019-12-07 12:57:10,008 INFO L226 Difference]: Without dead ends: 83 [2019-12-07 12:57:10,009 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2019-12-07 12:57:10,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2019-12-07 12:57:10,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 80. [2019-12-07 12:57:10,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2019-12-07 12:57:10,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 101 transitions. [2019-12-07 12:57:10,018 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 101 transitions. Word has length 50 [2019-12-07 12:57:10,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 12:57:10,018 INFO L462 AbstractCegarLoop]: Abstraction has 80 states and 101 transitions. [2019-12-07 12:57:10,018 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-12-07 12:57:10,019 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 101 transitions. [2019-12-07 12:57:10,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2019-12-07 12:57:10,020 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:57:10,020 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] [2019-12-07 12:57:10,021 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 12:57:10,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:57:10,021 INFO L82 PathProgramCache]: Analyzing trace with hash -1054248701, now seen corresponding path program 1 times [2019-12-07 12:57:10,021 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:57:10,021 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740221364] [2019-12-07 12:57:10,021 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:57:10,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:57:10,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:57:10,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:57:10,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:57:10,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:57:10,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:57:10,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:57:10,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:57:10,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:57:10,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:57:10,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:57:10,210 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2019-12-07 12:57:10,210 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740221364] [2019-12-07 12:57:10,210 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1954993093] [2019-12-07 12:57:10,210 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a402bdbf-60b3-46e4-a8d6-9f6c86075f4f/bin/uautomizer/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 [2019-12-07 12:57:10,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:57:10,275 INFO L264 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 17 conjunts are in the unsatisfiable core [2019-12-07 12:57:10,279 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:57:10,316 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-12-07 12:57:10,316 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-12-07 12:57:10,316 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [14] total 17 [2019-12-07 12:57:10,317 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664592339] [2019-12-07 12:57:10,317 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-12-07 12:57:10,317 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 12:57:10,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-12-07 12:57:10,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2019-12-07 12:57:10,317 INFO L87 Difference]: Start difference. First operand 80 states and 101 transitions. Second operand 8 states. [2019-12-07 12:57:10,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:57:10,395 INFO L93 Difference]: Finished difference Result 132 states and 166 transitions. [2019-12-07 12:57:10,395 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-12-07 12:57:10,396 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 63 [2019-12-07 12:57:10,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 12:57:10,397 INFO L225 Difference]: With dead ends: 132 [2019-12-07 12:57:10,397 INFO L226 Difference]: Without dead ends: 82 [2019-12-07 12:57:10,398 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=335, Unknown=0, NotChecked=0, Total=380 [2019-12-07 12:57:10,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2019-12-07 12:57:10,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2019-12-07 12:57:10,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2019-12-07 12:57:10,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 104 transitions. [2019-12-07 12:57:10,406 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 104 transitions. Word has length 63 [2019-12-07 12:57:10,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 12:57:10,406 INFO L462 AbstractCegarLoop]: Abstraction has 82 states and 104 transitions. [2019-12-07 12:57:10,406 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-12-07 12:57:10,406 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 104 transitions. [2019-12-07 12:57:10,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2019-12-07 12:57:10,408 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:57:10,408 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] [2019-12-07 12:57:10,608 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 12:57:10,609 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 12:57:10,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:57:10,609 INFO L82 PathProgramCache]: Analyzing trace with hash -744257626, now seen corresponding path program 1 times [2019-12-07 12:57:10,609 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:57:10,610 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705796152] [2019-12-07 12:57:10,610 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:57:10,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:57:10,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:57:10,676 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 12:57:10,676 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 12:57:10,692 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2019-12-07 12:57:10,693 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2019-12-07 12:57:10,693 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2019-12-07 12:57:10,693 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2019-12-07 12:57:10,695 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2019-12-07 12:57:10,695 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2019-12-07 12:57:10,696 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2019-12-07 12:57:10,696 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2019-12-07 12:57:10,696 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2019-12-07 12:57:10,696 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2019-12-07 12:57:10,696 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2019-12-07 12:57:10,696 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2019-12-07 12:57:10,717 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 12:57:10 BoogieIcfgContainer [2019-12-07 12:57:10,717 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 12:57:10,718 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 12:57:10,718 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 12:57:10,718 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 12:57:10,718 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:57:08" (3/4) ... [2019-12-07 12:57:10,720 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-12-07 12:57:10,722 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2019-12-07 12:57:10,722 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2019-12-07 12:57:10,723 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2019-12-07 12:57:10,723 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2019-12-07 12:57:10,723 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2019-12-07 12:57:10,724 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2019-12-07 12:57:10,724 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2019-12-07 12:57:10,724 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2019-12-07 12:57:10,724 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2019-12-07 12:57:10,724 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2019-12-07 12:57:10,724 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2019-12-07 12:57:10,724 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2019-12-07 12:57:10,770 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_a402bdbf-60b3-46e4-a8d6-9f6c86075f4f/bin/uautomizer/witness.graphml [2019-12-07 12:57:10,770 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 12:57:10,772 INFO L168 Benchmark]: Toolchain (without parser) took 3062.33 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 111.1 MB). Free memory was 944.7 MB in the beginning and 910.2 MB in the end (delta: 34.5 MB). Peak memory consumption was 145.6 MB. Max. memory is 11.5 GB. [2019-12-07 12:57:10,772 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 960.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 12:57:10,772 INFO L168 Benchmark]: CACSL2BoogieTranslator took 213.37 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 111.1 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -159.9 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. [2019-12-07 12:57:10,773 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.41 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-12-07 12:57:10,773 INFO L168 Benchmark]: Boogie Preprocessor took 24.47 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 12:57:10,773 INFO L168 Benchmark]: RCFGBuilder took 289.86 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 38.5 MB). Peak memory consumption was 38.5 MB. Max. memory is 11.5 GB. [2019-12-07 12:57:10,773 INFO L168 Benchmark]: TraceAbstraction took 2450.67 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 917.0 MB in the end (delta: 143.8 MB). Peak memory consumption was 143.8 MB. Max. memory is 11.5 GB. [2019-12-07 12:57:10,774 INFO L168 Benchmark]: Witness Printer took 52.32 ms. Allocated memory is still 1.1 GB. Free memory was 917.0 MB in the beginning and 910.2 MB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2019-12-07 12:57:10,775 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 960.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 213.37 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 111.1 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -159.9 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 28.41 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 24.47 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 289.86 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 38.5 MB). Peak memory consumption was 38.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2450.67 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 917.0 MB in the end (delta: 143.8 MB). Peak memory consumption was 143.8 MB. Max. memory is 11.5 GB. * Witness Printer took 52.32 ms. Allocated memory is still 1.1 GB. Free memory was 917.0 MB in the beginning and 910.2 MB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 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: [L93] 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}] [L93] RET nondet_tree() [L71] 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}] [L71] RET, EXPR min(t) [L71] int a = min(t); [L72] int b; [L74] CALL, EXPR size(t) VAL [t={-2:0}] [L66] COND FALSE !(!t) [L67] EXPR t->left VAL [t={-2:0}, t={-2:0}, t->left={0:0}] [L67] CALL, EXPR size(t->left) VAL [t={0:0}] [L66] COND TRUE !t [L66] return 0; VAL [\result=0, t={0:0}, t={0:0}] [L67] RET, EXPR size(t->left) VAL [size(t->left)=0, t={-2:0}, t={-2:0}, t->left={0:0}] [L67] EXPR t->right VAL [size(t->left)=0, t={-2:0}, t={-2:0}, t->left={0:0}, t->right={0:0}] [L67] CALL, EXPR size(t->right) VAL [t={0:0}] [L66] COND TRUE !t [L66] return 0; VAL [\result=0, t={0:0}, t={0:0}] [L67] 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}] [L67] return size(t->left) + size(t->right) + 1; [L74] RET, EXPR size(t) [L74] int n = size(t); [L76] int *x = calloc(n, sizeof(int)); [L77] CALL tree_inorder(t, x, n) VAL [\old(i)=1, a={-1:0}, t={-2:0}] [L55] COND FALSE !(!t) [L58] 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}] [L58] CALL, EXPR tree_inorder(t->left, a, i) VAL [\old(i)=1, a={-1:0}, t={0:0}] [L55] COND TRUE !t [L56] return i; VAL [\old(i)=1, \result=1, a={-1:0}, a={-1:0}, i=1, t={0:0}, t={0:0}] [L58] 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] [L58] i = tree_inorder(t->left, a, i) [L59] EXPR i++ [L59] EXPR t->data [L59] a[i++] = t->data [L60] 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}] [L60] CALL, EXPR tree_inorder(t->right, a, i) VAL [\old(i)=2, a={-1:0}, t={0:0}] [L55] COND TRUE !t [L56] return i; VAL [\old(i)=2, \result=2, a={-1:0}, a={-1:0}, i=2, t={0:0}, t={0:0}] [L60] 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] [L60] i = tree_inorder(t->right, a, i) [L61] return i; VAL [\old(i)=1, \result=2, a={-1:0}, a={-1:0}, i=2, t={-2:0}, t={-2:0}] [L77] RET tree_inorder(t, x, n) [L78] x[0] [L11] COND TRUE !cond [L11] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 79 locations, 4 error locations. Result: UNSAFE, OverallTime: 2.3s, OverallIterations: 5, TraceHistogramMax: 3, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 313 SDtfs, 221 SDslu, 1325 SDs, 0 SdLazy, 701 SolverSat, 116 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 198 GetRequests, 147 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=82occurred 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: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 11 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 359 NumberOfCodeBlocks, 359 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 278 ConstructedInterpolants, 0 QuantifiedInterpolants, 43596 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...