./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 a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_c4de584c-9b71-4eb2-a12e-8fa1c77b4169/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_c4de584c-9b71-4eb2-a12e-8fa1c77b4169/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_c4de584c-9b71-4eb2-a12e-8fa1c77b4169/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_c4de584c-9b71-4eb2-a12e-8fa1c77b4169/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/verifythis/tree_del_iter_incorrect.c -s /tmp/vcloud-vcloud-master/worker/run_dir_c4de584c-9b71-4eb2-a12e-8fa1c77b4169/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_c4de584c-9b71-4eb2-a12e-8fa1c77b4169/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 74289de26b6d11ce9d727281c5976611ee27d2e8 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 03:16:00,297 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:16:00,301 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:16:00,379 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:16:00,380 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:16:00,386 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:16:00,389 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:16:00,397 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:16:00,400 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:16:00,406 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:16:00,408 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:16:00,410 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:16:00,411 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:16:00,415 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:16:00,417 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:16:00,419 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:16:00,421 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:16:00,425 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:16:00,429 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:16:00,440 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:16:00,442 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:16:00,444 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:16:00,446 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:16:00,448 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:16:00,457 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:16:00,457 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:16:00,458 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:16:00,460 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:16:00,461 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:16:00,462 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:16:00,463 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:16:00,465 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:16:00,467 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:16:00,468 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:16:00,469 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:16:00,470 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:16:00,471 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:16:00,471 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:16:00,472 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:16:00,473 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:16:00,474 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:16:00,477 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_c4de584c-9b71-4eb2-a12e-8fa1c77b4169/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-28 03:16:00,501 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:16:00,501 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:16:00,503 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:16:00,503 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:16:00,504 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:16:00,504 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:16:00,504 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:16:00,504 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:16:00,505 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:16:00,505 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:16:00,506 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 03:16:00,506 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:16:00,506 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 03:16:00,506 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:16:00,507 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:16:00,507 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:16:00,507 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 03:16:00,507 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:16:00,508 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:16:00,508 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:16:00,508 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:16:00,508 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:16:00,509 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:16:00,509 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:16:00,509 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 03:16:00,509 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:16:00,510 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 03:16:00,510 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 03:16:00,510 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:16:00,510 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_c4de584c-9b71-4eb2-a12e-8fa1c77b4169/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_c4de584c-9b71-4eb2-a12e-8fa1c77b4169/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 74289de26b6d11ce9d727281c5976611ee27d2e8 [2020-11-28 03:16:00,821 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:16:00,856 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:16:00,859 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:16:00,860 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:16:00,861 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:16:00,862 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_c4de584c-9b71-4eb2-a12e-8fa1c77b4169/bin/uautomizer/../../sv-benchmarks/c/verifythis/tree_del_iter_incorrect.c [2020-11-28 03:16:00,940 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c4de584c-9b71-4eb2-a12e-8fa1c77b4169/bin/uautomizer/data/2dba330b9/8f8b66da6dbb49f39bb2cf35a28d68a1/FLAGa3c00afbe [2020-11-28 03:16:01,547 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:16:01,548 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_c4de584c-9b71-4eb2-a12e-8fa1c77b4169/sv-benchmarks/c/verifythis/tree_del_iter_incorrect.c [2020-11-28 03:16:01,562 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c4de584c-9b71-4eb2-a12e-8fa1c77b4169/bin/uautomizer/data/2dba330b9/8f8b66da6dbb49f39bb2cf35a28d68a1/FLAGa3c00afbe [2020-11-28 03:16:01,868 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_c4de584c-9b71-4eb2-a12e-8fa1c77b4169/bin/uautomizer/data/2dba330b9/8f8b66da6dbb49f39bb2cf35a28d68a1 [2020-11-28 03:16:01,871 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:16:01,872 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:16:01,874 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:16:01,874 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:16:01,879 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:16:01,880 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:16:01" (1/1) ... [2020-11-28 03:16:01,883 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44108859 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:01, skipping insertion in model container [2020-11-28 03:16:01,883 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:16:01" (1/1) ... [2020-11-28 03:16:01,890 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:16:01,916 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:16:02,138 WARN L1500 CHandler]: Possible shadowing of function min [2020-11-28 03:16:02,155 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:16:02,179 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:16:02,200 WARN L1500 CHandler]: Possible shadowing of function min [2020-11-28 03:16:02,212 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:16:02,235 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:16:02,235 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:02 WrapperNode [2020-11-28 03:16:02,236 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:16:02,237 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:16:02,237 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:16:02,237 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:16:02,247 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:02" (1/1) ... [2020-11-28 03:16:02,271 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:02" (1/1) ... [2020-11-28 03:16:02,312 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:16:02,313 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:16:02,314 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:16:02,314 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:16:02,323 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:02" (1/1) ... [2020-11-28 03:16:02,323 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:02" (1/1) ... [2020-11-28 03:16:02,340 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:02" (1/1) ... [2020-11-28 03:16:02,341 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:02" (1/1) ... [2020-11-28 03:16:02,351 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:02" (1/1) ... [2020-11-28 03:16:02,359 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:02" (1/1) ... [2020-11-28 03:16:02,362 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:02" (1/1) ... [2020-11-28 03:16:02,366 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:16:02,367 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:16:02,367 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:16:02,368 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:16:02,376 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:02" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c4de584c-9b71-4eb2-a12e-8fa1c77b4169/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:16:02,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-28 03:16:02,429 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:16:02,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 03:16:02,430 INFO L130 BoogieDeclarations]: Found specification of procedure min [2020-11-28 03:16:02,430 INFO L138 BoogieDeclarations]: Found implementation of procedure min [2020-11-28 03:16:02,430 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-28 03:16:02,430 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-28 03:16:02,432 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_tree [2020-11-28 03:16:02,432 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_tree [2020-11-28 03:16:02,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 03:16:02,433 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-28 03:16:02,433 INFO L130 BoogieDeclarations]: Found specification of procedure size [2020-11-28 03:16:02,433 INFO L138 BoogieDeclarations]: Found implementation of procedure size [2020-11-28 03:16:02,433 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:16:02,433 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:16:02,433 INFO L130 BoogieDeclarations]: Found specification of procedure tree_inorder [2020-11-28 03:16:02,433 INFO L138 BoogieDeclarations]: Found implementation of procedure tree_inorder [2020-11-28 03:16:02,433 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 03:16:03,185 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:16:03,186 INFO L298 CfgBuilder]: Removed 32 assume(true) statements. [2020-11-28 03:16:03,188 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:16:03 BoogieIcfgContainer [2020-11-28 03:16:03,189 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:16:03,203 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:16:03,203 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:16:03,206 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:16:03,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:16:01" (1/3) ... [2020-11-28 03:16:03,207 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2459219c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:16:03, skipping insertion in model container [2020-11-28 03:16:03,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:02" (2/3) ... [2020-11-28 03:16:03,208 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2459219c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:16:03, skipping insertion in model container [2020-11-28 03:16:03,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:16:03" (3/3) ... [2020-11-28 03:16:03,210 INFO L111 eAbstractionObserver]: Analyzing ICFG tree_del_iter_incorrect.c [2020-11-28 03:16:03,220 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:16:03,225 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-11-28 03:16:03,237 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-28 03:16:03,272 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:16:03,273 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 03:16:03,273 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:16:03,273 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:16:03,273 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:16:03,273 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:16:03,273 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:16:03,274 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:16:03,294 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states. [2020-11-28 03:16:03,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-28 03:16:03,303 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:16:03,304 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:16:03,304 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:16:03,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:03,311 INFO L82 PathProgramCache]: Analyzing trace with hash 1820768447, now seen corresponding path program 1 times [2020-11-28 03:16:03,321 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:03,322 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505905687] [2020-11-28 03:16:03,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:03,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:03,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-28 03:16:03,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:03,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-11-28 03:16:03,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:03,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-11-28 03:16:03,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:03,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-11-28 03:16:03,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:03,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:16:03,615 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505905687] [2020-11-28 03:16:03,616 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:16:03,617 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:16:03,618 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868840867] [2020-11-28 03:16:03,622 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:16:03,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:16:03,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:16:03,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:16:03,649 INFO L87 Difference]: Start difference. First operand 82 states. Second operand 4 states. [2020-11-28 03:16:04,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:16:04,032 INFO L93 Difference]: Finished difference Result 140 states and 184 transitions. [2020-11-28 03:16:04,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:16:04,034 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-11-28 03:16:04,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:16:04,046 INFO L225 Difference]: With dead ends: 140 [2020-11-28 03:16:04,047 INFO L226 Difference]: Without dead ends: 78 [2020-11-28 03:16:04,051 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:16:04,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-11-28 03:16:04,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 73. [2020-11-28 03:16:04,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-11-28 03:16:04,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 90 transitions. [2020-11-28 03:16:04,114 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 90 transitions. Word has length 30 [2020-11-28 03:16:04,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:16:04,114 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 90 transitions. [2020-11-28 03:16:04,114 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:16:04,115 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 90 transitions. [2020-11-28 03:16:04,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-28 03:16:04,117 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:16:04,117 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:16:04,118 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 03:16:04,118 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:16:04,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:04,119 INFO L82 PathProgramCache]: Analyzing trace with hash -1773134271, now seen corresponding path program 1 times [2020-11-28 03:16:04,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:04,119 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322642399] [2020-11-28 03:16:04,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:04,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:04,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-28 03:16:04,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:04,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-11-28 03:16:04,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:04,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-11-28 03:16:04,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:04,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-11-28 03:16:04,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:04,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:16:04,331 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322642399] [2020-11-28 03:16:04,331 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:16:04,331 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-28 03:16:04,331 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617368911] [2020-11-28 03:16:04,333 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 03:16:04,333 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:16:04,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 03:16:04,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:16:04,334 INFO L87 Difference]: Start difference. First operand 73 states and 90 transitions. Second operand 7 states. [2020-11-28 03:16:04,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:16:04,674 INFO L93 Difference]: Finished difference Result 130 states and 164 transitions. [2020-11-28 03:16:04,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 03:16:04,676 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 30 [2020-11-28 03:16:04,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:16:04,680 INFO L225 Difference]: With dead ends: 130 [2020-11-28 03:16:04,680 INFO L226 Difference]: Without dead ends: 80 [2020-11-28 03:16:04,681 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-11-28 03:16:04,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-11-28 03:16:04,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 75. [2020-11-28 03:16:04,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-11-28 03:16:04,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 94 transitions. [2020-11-28 03:16:04,696 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 94 transitions. Word has length 30 [2020-11-28 03:16:04,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:16:04,696 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 94 transitions. [2020-11-28 03:16:04,696 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 03:16:04,696 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 94 transitions. [2020-11-28 03:16:04,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-11-28 03:16:04,699 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:16:04,702 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:16:04,703 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 03:16:04,703 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:16:04,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:04,704 INFO L82 PathProgramCache]: Analyzing trace with hash 459981034, now seen corresponding path program 1 times [2020-11-28 03:16:04,705 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:04,705 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849019684] [2020-11-28 03:16:04,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:04,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:04,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-28 03:16:04,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:04,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-11-28 03:16:04,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:04,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-11-28 03:16:04,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:04,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-28 03:16:04,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:04,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-11-28 03:16:04,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:05,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-11-28 03:16:05,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:05,027 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-11-28 03:16:05,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849019684] [2020-11-28 03:16:05,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [148857490] [2020-11-28 03:16:05,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c4de584c-9b71-4eb2-a12e-8fa1c77b4169/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:16:05,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:05,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 25 conjunts are in the unsatisfiable core [2020-11-28 03:16:05,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:16:05,320 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-11-28 03:16:05,320 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:16:05,321 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 10 [2020-11-28 03:16:05,321 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118835236] [2020-11-28 03:16:05,322 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-28 03:16:05,322 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:16:05,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-28 03:16:05,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-11-28 03:16:05,323 INFO L87 Difference]: Start difference. First operand 75 states and 94 transitions. Second operand 10 states. [2020-11-28 03:16:06,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:16:06,005 INFO L93 Difference]: Finished difference Result 136 states and 173 transitions. [2020-11-28 03:16:06,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-28 03:16:06,006 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 42 [2020-11-28 03:16:06,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:16:06,008 INFO L225 Difference]: With dead ends: 136 [2020-11-28 03:16:06,008 INFO L226 Difference]: Without dead ends: 80 [2020-11-28 03:16:06,010 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 49 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2020-11-28 03:16:06,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-11-28 03:16:06,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 77. [2020-11-28 03:16:06,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-11-28 03:16:06,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 97 transitions. [2020-11-28 03:16:06,023 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 97 transitions. Word has length 42 [2020-11-28 03:16:06,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:16:06,024 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 97 transitions. [2020-11-28 03:16:06,024 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-28 03:16:06,024 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 97 transitions. [2020-11-28 03:16:06,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-11-28 03:16:06,026 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:16:06,026 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:16:06,240 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-11-28 03:16:06,240 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:16:06,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:06,241 INFO L82 PathProgramCache]: Analyzing trace with hash 1512984621, now seen corresponding path program 1 times [2020-11-28 03:16:06,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:06,241 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346250178] [2020-11-28 03:16:06,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:06,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:06,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-28 03:16:06,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:06,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-11-28 03:16:06,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:06,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-28 03:16:06,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:06,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-11-28 03:16:06,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:06,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-28 03:16:06,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:06,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-28 03:16:06,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:06,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-11-28 03:16:06,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:06,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-11-28 03:16:06,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:06,529 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-11-28 03:16:06,529 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346250178] [2020-11-28 03:16:06,530 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:16:06,530 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-11-28 03:16:06,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921606365] [2020-11-28 03:16:06,534 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-28 03:16:06,534 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:16:06,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-28 03:16:06,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-11-28 03:16:06,535 INFO L87 Difference]: Start difference. First operand 77 states and 97 transitions. Second operand 10 states. [2020-11-28 03:16:07,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:16:07,046 INFO L93 Difference]: Finished difference Result 136 states and 173 transitions. [2020-11-28 03:16:07,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-28 03:16:07,047 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 52 [2020-11-28 03:16:07,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:16:07,050 INFO L225 Difference]: With dead ends: 136 [2020-11-28 03:16:07,050 INFO L226 Difference]: Without dead ends: 82 [2020-11-28 03:16:07,051 INFO L677 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 [2020-11-28 03:16:07,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-11-28 03:16:07,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 79. [2020-11-28 03:16:07,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-11-28 03:16:07,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 100 transitions. [2020-11-28 03:16:07,075 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 100 transitions. Word has length 52 [2020-11-28 03:16:07,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:16:07,076 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 100 transitions. [2020-11-28 03:16:07,076 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-28 03:16:07,076 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 100 transitions. [2020-11-28 03:16:07,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-11-28 03:16:07,086 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:16:07,086 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:16:07,087 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 03:16:07,087 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:16:07,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:07,087 INFO L82 PathProgramCache]: Analyzing trace with hash -2124599638, now seen corresponding path program 1 times [2020-11-28 03:16:07,088 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:07,088 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667559777] [2020-11-28 03:16:07,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:07,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:07,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-28 03:16:07,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:07,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-11-28 03:16:07,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:07,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-28 03:16:07,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:07,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-11-28 03:16:07,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:07,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-28 03:16:07,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:07,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-11-28 03:16:07,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:07,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-11-28 03:16:07,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:07,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-28 03:16:07,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:07,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-11-28 03:16:07,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:07,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-11-28 03:16:07,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:07,510 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-11-28 03:16:07,510 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667559777] [2020-11-28 03:16:07,511 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1152402416] [2020-11-28 03:16:07,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c4de584c-9b71-4eb2-a12e-8fa1c77b4169/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 [2020-11-28 03:16:07,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:07,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 31 conjunts are in the unsatisfiable core [2020-11-28 03:16:07,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:16:07,785 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-11-28 03:16:07,786 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:16:07,786 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 14 [2020-11-28 03:16:07,786 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811861012] [2020-11-28 03:16:07,790 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-11-28 03:16:07,790 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:16:07,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-11-28 03:16:07,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-11-28 03:16:07,791 INFO L87 Difference]: Start difference. First operand 79 states and 100 transitions. Second operand 14 states. [2020-11-28 03:16:08,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:16:08,459 INFO L93 Difference]: Finished difference Result 129 states and 163 transitions. [2020-11-28 03:16:08,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-11-28 03:16:08,471 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 65 [2020-11-28 03:16:08,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:16:08,473 INFO L225 Difference]: With dead ends: 129 [2020-11-28 03:16:08,473 INFO L226 Difference]: Without dead ends: 82 [2020-11-28 03:16:08,474 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 80 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=72, Invalid=390, Unknown=0, NotChecked=0, Total=462 [2020-11-28 03:16:08,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-11-28 03:16:08,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 81. [2020-11-28 03:16:08,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-11-28 03:16:08,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 104 transitions. [2020-11-28 03:16:08,492 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 104 transitions. Word has length 65 [2020-11-28 03:16:08,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:16:08,493 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 104 transitions. [2020-11-28 03:16:08,493 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-11-28 03:16:08,493 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 104 transitions. [2020-11-28 03:16:08,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-11-28 03:16:08,496 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:16:08,496 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:16:08,717 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:16:08,718 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:16:08,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:08,718 INFO L82 PathProgramCache]: Analyzing trace with hash 334261757, now seen corresponding path program 1 times [2020-11-28 03:16:08,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:08,719 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262444408] [2020-11-28 03:16:08,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:08,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:16:08,775 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:16:08,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:16:08,824 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:16:08,863 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:16:08,863 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 03:16:08,864 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-28 03:16:08,895 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2020-11-28 03:16:08,896 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2020-11-28 03:16:08,897 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2020-11-28 03:16:08,897 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2020-11-28 03:16:08,900 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2020-11-28 03:16:08,900 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2020-11-28 03:16:08,900 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2020-11-28 03:16:08,900 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2020-11-28 03:16:08,901 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2020-11-28 03:16:08,901 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2020-11-28 03:16:08,901 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2020-11-28 03:16:08,902 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2020-11-28 03:16:08,968 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:16:08 BoogieIcfgContainer [2020-11-28 03:16:08,968 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:16:08,969 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:16:08,969 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:16:08,969 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:16:08,969 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:16:03" (3/4) ... [2020-11-28 03:16:08,971 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 03:16:08,978 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2020-11-28 03:16:08,978 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2020-11-28 03:16:08,979 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2020-11-28 03:16:08,979 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2020-11-28 03:16:08,980 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2020-11-28 03:16:08,980 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2020-11-28 03:16:08,980 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2020-11-28 03:16:08,980 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2020-11-28 03:16:08,980 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2020-11-28 03:16:08,981 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2020-11-28 03:16:08,981 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2020-11-28 03:16:08,981 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2020-11-28 03:16:09,078 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_c4de584c-9b71-4eb2-a12e-8fa1c77b4169/bin/uautomizer/witness.graphml [2020-11-28 03:16:09,078 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:16:09,080 INFO L168 Benchmark]: Toolchain (without parser) took 7206.86 ms. Allocated memory was 111.1 MB in the beginning and 161.5 MB in the end (delta: 50.3 MB). Free memory was 80.3 MB in the beginning and 84.4 MB in the end (delta: -4.1 MB). Peak memory consumption was 44.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:16:09,081 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 75.5 MB. Free memory is still 33.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:16:09,081 INFO L168 Benchmark]: CACSL2BoogieTranslator took 362.23 ms. Allocated memory is still 111.1 MB. Free memory was 80.3 MB in the beginning and 85.9 MB in the end (delta: -5.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:16:09,083 INFO L168 Benchmark]: Boogie Procedure Inliner took 75.10 ms. Allocated memory is still 111.1 MB. Free memory was 85.9 MB in the beginning and 83.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:16:09,083 INFO L168 Benchmark]: Boogie Preprocessor took 53.14 ms. Allocated memory is still 111.1 MB. Free memory was 83.8 MB in the beginning and 82.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:16:09,083 INFO L168 Benchmark]: RCFGBuilder took 821.88 ms. Allocated memory is still 111.1 MB. Free memory was 82.2 MB in the beginning and 50.0 MB in the end (delta: 32.2 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.1 GB. [2020-11-28 03:16:09,084 INFO L168 Benchmark]: TraceAbstraction took 5765.72 ms. Allocated memory was 111.1 MB in the beginning and 161.5 MB in the end (delta: 50.3 MB). Free memory was 88.7 MB in the beginning and 90.6 MB in the end (delta: -1.9 MB). Peak memory consumption was 46.9 MB. Max. memory is 16.1 GB. [2020-11-28 03:16:09,084 INFO L168 Benchmark]: Witness Printer took 109.33 ms. Allocated memory is still 161.5 MB. Free memory was 90.6 MB in the beginning and 84.4 MB in the end (delta: 6.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-28 03:16:09,088 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 75.5 MB. Free memory is still 33.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 362.23 ms. Allocated memory is still 111.1 MB. Free memory was 80.3 MB in the beginning and 85.9 MB in the end (delta: -5.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 75.10 ms. Allocated memory is still 111.1 MB. Free memory was 85.9 MB in the beginning and 83.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 53.14 ms. Allocated memory is still 111.1 MB. Free memory was 83.8 MB in the beginning and 82.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 821.88 ms. Allocated memory is still 111.1 MB. Free memory was 82.2 MB in the beginning and 50.0 MB in the end (delta: 32.2 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5765.72 ms. Allocated memory was 111.1 MB in the beginning and 161.5 MB in the end (delta: 50.3 MB). Free memory was 88.7 MB in the beginning and 90.6 MB in the end (delta: -1.9 MB). Peak memory consumption was 46.9 MB. Max. memory is 16.1 GB. * Witness Printer took 109.33 ms. Allocated memory is still 161.5 MB. Free memory was 90.6 MB in the beginning and 84.4 MB in the end (delta: 6.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 14]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L105] CALL nondet_tree() [L25] COND FALSE !(__VERIFIER_nondet_bool()) [L28] struct node *n = (struct node *)malloc(sizeof(struct node)); [L29] n->data = __VERIFIER_nondet_int() [L30] CALL, EXPR nondet_tree() [L25] COND TRUE __VERIFIER_nondet_bool() [L26] return 0; VAL [\result={0:0}] [L30] RET, EXPR nondet_tree() VAL [malloc(sizeof(struct node))={-2:0}, n={-2:0}, nondet_tree()={0:0}] [L30] n->left = nondet_tree() [L31] CALL, EXPR nondet_tree() [L25] COND TRUE __VERIFIER_nondet_bool() [L26] return 0; VAL [\result={0:0}] [L31] RET, EXPR nondet_tree() VAL [malloc(sizeof(struct node))={-2:0}, n={-2:0}, nondet_tree()={0:0}] [L31] n->right = nondet_tree() [L32] return n; VAL [\result={-2:0}, malloc(sizeof(struct node))={-2:0}, n={-2:0}] [L105] RET nondet_tree() [L83] CALL, EXPR min(t) VAL [n={-2:0}] [L37] COND FALSE !(!n) [L40] EXPR n->left VAL [n={-2:0}, n={-2:0}, n->left={0:0}] [L40] CALL, EXPR min(n->left) VAL [n={0:0}] [L37] COND TRUE !n [L38] return 2147483647; VAL [\result=2147483647, n={0:0}, n={0:0}] [L40] RET, EXPR min(n->left) VAL [min(n->left)=2147483647, n={-2:0}, n={-2:0}, n->left={0:0}] [L40] int a = min(n->left); [L41] EXPR n->right VAL [a=2147483647, n={-2:0}, n={-2:0}, n->right={0:0}] [L41] CALL, EXPR min(n->right) VAL [n={0:0}] [L37] COND TRUE !n [L38] return 2147483647; VAL [\result=2147483647, n={0:0}, n={0:0}] [L41] RET, EXPR min(n->right) VAL [a=2147483647, min(n->right)=2147483647, n={-2:0}, n={-2:0}, n->right={0:0}] [L41] int b = min(n->right); [L42] COND TRUE a <= b [L42] return a; VAL [\result=2147483647, a=2147483647, b=2147483647, n={-2:0}, n={-2:0}] [L83] RET, EXPR min(t) [L83] int a = min(t); [L84] int b; [L86] CALL, EXPR size(t) VAL [t={-2:0}] [L78] COND FALSE !(!t) [L79] EXPR t->left VAL [t={-2:0}, t={-2:0}, t->left={0:0}] [L79] CALL, EXPR size(t->left) VAL [t={0:0}] [L78] COND TRUE !t [L78] return 0; VAL [\result=0, t={0:0}, t={0:0}] [L79] RET, EXPR size(t->left) VAL [size(t->left)=0, t={-2:0}, t={-2:0}, t->left={0:0}] [L79] EXPR t->right VAL [size(t->left)=0, t={-2:0}, t={-2:0}, t->left={0:0}, t->right={0:0}] [L79] CALL, EXPR size(t->right) VAL [t={0:0}] [L78] COND TRUE !t [L78] return 0; VAL [\result=0, t={0:0}, t={0:0}] [L79] 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}] [L79] return size(t->left) + size(t->right) + 1; [L86] RET, EXPR size(t) [L86] int n = size(t); [L10] COND FALSE !(!cond) [L88] int *x = calloc(n, sizeof(int)); [L89] CALL tree_inorder(t, x, n) VAL [\old(i)=1, a={-3:0}, t={-2:0}] [L67] COND FALSE !(!t) [L70] EXPR t->left VAL [\old(i)=1, a={-3:0}, a={-3:0}, i=1, t={-2:0}, t={-2:0}, t->left={0:0}] [L70] CALL, EXPR tree_inorder(t->left, a, i) VAL [\old(i)=1, a={-3:0}, t={0:0}] [L67] COND TRUE !t [L68] return i; VAL [\old(i)=1, \result=1, a={-3:0}, a={-3:0}, i=1, t={0:0}, t={0:0}] [L70] RET, EXPR tree_inorder(t->left, a, i) VAL [\old(i)=1, a={-3:0}, a={-3:0}, i=1, t={-2:0}, t={-2:0}, t->left={0:0}, tree_inorder(t->left, a, i)=1] [L70] i = tree_inorder(t->left, a, i) [L71] EXPR i++ [L71] EXPR t->data [L71] a[i++] = t->data [L72] EXPR t->right VAL [\old(i)=1, a={-3:0}, a={-3:0}, i=2, t={-2:0}, t={-2:0}, t->right={0:0}] [L72] CALL, EXPR tree_inorder(t->right, a, i) VAL [\old(i)=2, a={-3:0}, t={0:0}] [L67] COND TRUE !t [L68] return i; VAL [\old(i)=2, \result=2, a={-3:0}, a={-3:0}, i=2, t={0:0}, t={0:0}] [L72] RET, EXPR tree_inorder(t->right, a, i) VAL [\old(i)=1, a={-3:0}, a={-3:0}, i=2, t={-2:0}, t={-2:0}, t->right={0:0}, tree_inorder(t->right, a, i)=2] [L72] i = tree_inorder(t->right, a, i) [L73] return i; VAL [\old(i)=1, \result=2, a={-3:0}, a={-3:0}, i=2, t={-2:0}, t={-2:0}] [L89] RET tree_inorder(t, x, n) [L90] x[0] [L16] COND TRUE !cond [L14] __assert_fail("0", "tree_del_iter_incorrect.c", 14, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 82 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 5.5s, OverallIterations: 6, TraceHistogramMax: 3, AutomataDifference: 2.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 383 SDtfs, 375 SDslu, 1435 SDs, 0 SdLazy, 1063 SolverSat, 168 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 216 GetRequests, 160 SyntacticMatches, 4 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=82occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 17 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 403 NumberOfCodeBlocks, 403 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 319 ConstructedInterpolants, 0 QuantifiedInterpolants, 51451 SizeOfPredicates, 17 NumberOfNonLiveVariables, 590 ConjunctsInSsa, 56 ConjunctsInUnsatCore, 7 InterpolantComputations, 3 PerfectInterpolantSequences, 103/111 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...