./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/list-properties/simple-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 678e0110 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_fac3f76d-d8c5-40fb-9440-3d7e7dafc2a7/bin/ukojak/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_fac3f76d-d8c5-40fb-9440-3d7e7dafc2a7/bin/ukojak/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_fac3f76d-d8c5-40fb-9440-3d7e7dafc2a7/bin/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_fac3f76d-d8c5-40fb-9440-3d7e7dafc2a7/bin/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/list-properties/simple-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_fac3f76d-d8c5-40fb-9440-3d7e7dafc2a7/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_fac3f76d-d8c5-40fb-9440-3d7e7dafc2a7/bin/ukojak --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 Kojak --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d0cf6b9a1a7372eb466349e319faa44cf865bdad ................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.24-678e011 [2019-11-19 22:31:05,391 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-19 22:31:05,394 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-19 22:31:05,409 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-19 22:31:05,409 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-19 22:31:05,410 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-19 22:31:05,412 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-19 22:31:05,414 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-19 22:31:05,417 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-19 22:31:05,418 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-19 22:31:05,419 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-19 22:31:05,420 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-19 22:31:05,421 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-19 22:31:05,425 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-19 22:31:05,427 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-19 22:31:05,429 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-19 22:31:05,430 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-19 22:31:05,435 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-19 22:31:05,439 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-19 22:31:05,443 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-19 22:31:05,449 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-19 22:31:05,452 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-19 22:31:05,455 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-19 22:31:05,456 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-19 22:31:05,459 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-19 22:31:05,459 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-19 22:31:05,459 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-19 22:31:05,461 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-19 22:31:05,462 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-19 22:31:05,464 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-19 22:31:05,464 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-19 22:31:05,465 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-19 22:31:05,466 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-19 22:31:05,467 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-19 22:31:05,468 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-19 22:31:05,469 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-19 22:31:05,470 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-19 22:31:05,470 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-19 22:31:05,470 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-19 22:31:05,472 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-19 22:31:05,473 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-19 22:31:05,474 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_fac3f76d-d8c5-40fb-9440-3d7e7dafc2a7/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf [2019-11-19 22:31:05,495 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-19 22:31:05,495 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-19 22:31:05,496 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-19 22:31:05,497 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2019-11-19 22:31:05,497 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-19 22:31:05,498 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-19 22:31:05,498 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-19 22:31:05,498 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-19 22:31:05,499 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-19 22:31:05,499 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-19 22:31:05,500 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-19 22:31:05,500 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-19 22:31:05,501 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-19 22:31:05,501 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-19 22:31:05,501 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-19 22:31:05,501 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-19 22:31:05,502 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-19 22:31:05,502 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-19 22:31:05,502 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2019-11-19 22:31:05,503 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2019-11-19 22:31:05,503 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-19 22:31:05,503 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-19 22:31:05,503 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2019-11-19 22:31:05,504 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-19 22:31:05,504 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-19 22:31:05,504 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-19 22:31:05,505 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2019-11-19 22:31:05,505 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-19 22:31:05,505 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-19 22:31:05,505 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_fac3f76d-d8c5-40fb-9440-3d7e7dafc2a7/bin/ukojak 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 -> Kojak 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 -> d0cf6b9a1a7372eb466349e319faa44cf865bdad [2019-11-19 22:31:05,679 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-19 22:31:05,692 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-19 22:31:05,695 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-19 22:31:05,697 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-19 22:31:05,697 INFO L275 PluginConnector]: CDTParser initialized [2019-11-19 22:31:05,698 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_fac3f76d-d8c5-40fb-9440-3d7e7dafc2a7/bin/ukojak/../../sv-benchmarks/c/list-properties/simple-1.i [2019-11-19 22:31:05,761 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_fac3f76d-d8c5-40fb-9440-3d7e7dafc2a7/bin/ukojak/data/121c7d38b/cbc5edf51d064dc694dda7b6c491e6ef/FLAG4d445c1f9 [2019-11-19 22:31:06,254 INFO L306 CDTParser]: Found 1 translation units. [2019-11-19 22:31:06,254 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_fac3f76d-d8c5-40fb-9440-3d7e7dafc2a7/sv-benchmarks/c/list-properties/simple-1.i [2019-11-19 22:31:06,271 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_fac3f76d-d8c5-40fb-9440-3d7e7dafc2a7/bin/ukojak/data/121c7d38b/cbc5edf51d064dc694dda7b6c491e6ef/FLAG4d445c1f9 [2019-11-19 22:31:06,525 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_fac3f76d-d8c5-40fb-9440-3d7e7dafc2a7/bin/ukojak/data/121c7d38b/cbc5edf51d064dc694dda7b6c491e6ef [2019-11-19 22:31:06,528 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-19 22:31:06,530 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-19 22:31:06,531 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-19 22:31:06,531 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-19 22:31:06,535 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-19 22:31:06,536 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 10:31:06" (1/1) ... [2019-11-19 22:31:06,539 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ea86b8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:31:06, skipping insertion in model container [2019-11-19 22:31:06,539 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 10:31:06" (1/1) ... [2019-11-19 22:31:06,548 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-19 22:31:06,602 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-19 22:31:07,109 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 22:31:07,126 INFO L188 MainTranslator]: Completed pre-run [2019-11-19 22:31:07,185 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 22:31:07,244 INFO L192 MainTranslator]: Completed translation [2019-11-19 22:31:07,244 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:31:07 WrapperNode [2019-11-19 22:31:07,245 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-19 22:31:07,246 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-19 22:31:07,246 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-19 22:31:07,246 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-19 22:31:07,256 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:31:07" (1/1) ... [2019-11-19 22:31:07,272 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:31:07" (1/1) ... [2019-11-19 22:31:07,296 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-19 22:31:07,297 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-19 22:31:07,297 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-19 22:31:07,297 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-19 22:31:07,307 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:31:07" (1/1) ... [2019-11-19 22:31:07,307 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:31:07" (1/1) ... [2019-11-19 22:31:07,311 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:31:07" (1/1) ... [2019-11-19 22:31:07,311 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:31:07" (1/1) ... [2019-11-19 22:31:07,318 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:31:07" (1/1) ... [2019-11-19 22:31:07,323 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:31:07" (1/1) ... [2019-11-19 22:31:07,325 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:31:07" (1/1) ... [2019-11-19 22:31:07,328 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-19 22:31:07,328 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-19 22:31:07,328 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-19 22:31:07,328 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-19 22:31:07,330 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:31:07" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fac3f76d-d8c5-40fb-9440-3d7e7dafc2a7/bin/ukojak/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (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:10000 [2019-11-19 22:31:07,408 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-11-19 22:31:07,408 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-11-19 22:31:07,409 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-19 22:31:07,409 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-19 22:31:07,409 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-19 22:31:07,409 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-19 22:31:07,410 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-19 22:31:07,410 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-19 22:31:07,410 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-19 22:31:07,617 INFO L689 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-11-19 22:31:07,832 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-19 22:31:07,832 INFO L285 CfgBuilder]: Removed 6 assume(true) statements. [2019-11-19 22:31:07,834 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 10:31:07 BoogieIcfgContainer [2019-11-19 22:31:07,834 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-19 22:31:07,835 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2019-11-19 22:31:07,835 INFO L271 PluginConnector]: Initializing CodeCheck... [2019-11-19 22:31:07,850 INFO L275 PluginConnector]: CodeCheck initialized [2019-11-19 22:31:07,851 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 10:31:07" (1/1) ... [2019-11-19 22:31:07,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:31:07,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-11-19 22:31:07,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 18 states and 23 transitions. [2019-11-19 22:31:07,901 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 23 transitions. [2019-11-19 22:31:07,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-19 22:31:07,907 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-11-19 22:31:08,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:31:08,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:31:08,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-11-19 22:31:08,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 18 states and 21 transitions. [2019-11-19 22:31:08,073 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2019-11-19 22:31:08,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-19 22:31:08,074 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-11-19 22:31:08,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:31:08,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:31:08,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-11-19 22:31:08,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 23 states and 30 transitions. [2019-11-19 22:31:08,324 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 30 transitions. [2019-11-19 22:31:08,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-19 22:31:08,325 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-11-19 22:31:08,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:31:08,486 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:31:09,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-11-19 22:31:09,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 27 states and 39 transitions. [2019-11-19 22:31:09,127 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 39 transitions. [2019-11-19 22:31:09,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-19 22:31:09,131 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-11-19 22:31:09,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:31:09,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:31:09,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:31:09,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:31:09,355 WARN L483 CodeCheckObserver]: This program is UNSAFE, Check terminated with 4 iterations. [2019-11-19 22:31:09,392 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 19.11 10:31:09 ImpRootNode [2019-11-19 22:31:09,393 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2019-11-19 22:31:09,393 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-19 22:31:09,393 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-19 22:31:09,394 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-19 22:31:09,395 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 10:31:07" (3/4) ... [2019-11-19 22:31:09,397 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-19 22:31:09,481 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_fac3f76d-d8c5-40fb-9440-3d7e7dafc2a7/bin/ukojak/witness.graphml [2019-11-19 22:31:09,484 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-19 22:31:09,487 INFO L168 Benchmark]: Toolchain (without parser) took 2956.00 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.8 MB). Free memory was 939.3 MB in the beginning and 1.0 GB in the end (delta: -63.6 MB). Peak memory consumption was 82.2 MB. Max. memory is 11.5 GB. [2019-11-19 22:31:09,487 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 22:31:09,489 INFO L168 Benchmark]: CACSL2BoogieTranslator took 714.73 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.8 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -189.0 MB). Peak memory consumption was 19.3 MB. Max. memory is 11.5 GB. [2019-11-19 22:31:09,490 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.56 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 22:31:09,491 INFO L168 Benchmark]: Boogie Preprocessor took 31.28 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-19 22:31:09,491 INFO L168 Benchmark]: RCFGBuilder took 506.02 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. [2019-11-19 22:31:09,493 INFO L168 Benchmark]: CodeCheck took 1558.44 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 92.3 MB). Peak memory consumption was 92.3 MB. Max. memory is 11.5 GB. [2019-11-19 22:31:09,493 INFO L168 Benchmark]: Witness Printer took 90.61 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-19 22:31:09,502 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck: - StatisticsResult: Ultimate CodeCheck benchmark data CFG has 2 procedures, 19 locations, 1 error locations. Result: UNSAFE, OverallTime: 1.4s, OverallIterations: 4, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 72 SDtfs, 20 SDslu, 16 SDs, 0 SdLazy, 134 SolverSat, 38 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 211 GetRequests, 186 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 42 NumberOfCodeBlocks, 42 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 26 ConstructedInterpolants, 0 QuantifiedInterpolants, 1300 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 1/2 InterpolantCoveringCapability, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - CounterExampleResult [Line: 538]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L521] List a = (List) malloc(sizeof(struct node)); [L522] COND FALSE !(a == 0) [L523] List t; [L524] List p = a; [L525] a->h = 2 [L526] COND TRUE __VERIFIER_nondet_int() [L527] p->h = 1 [L528] t = (List) malloc(sizeof(struct node)) [L529] COND FALSE !(t == 0) [L530] p->n = t [L531] EXPR p->n [L531] p = p->n [L526] COND FALSE !(__VERIFIER_nondet_int()) [L533] p->h = 2 [L534] p->n = 0 [L535] p = a [L536] COND TRUE p!=0 [L537] EXPR p->h [L537] COND TRUE p->h != 2 [L538] __VERIFIER_error() * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 714.73 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.8 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -189.0 MB). Peak memory consumption was 19.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 50.56 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 31.28 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 506.02 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. * CodeCheck took 1558.44 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 92.3 MB). Peak memory consumption was 92.3 MB. Max. memory is 11.5 GB. * Witness Printer took 90.61 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...