./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/forester-heap/dll-sorted-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 69874e26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_026c3ae6-901d-4348-939e-918794b4c0dd/bin/ukojak/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_026c3ae6-901d-4348-939e-918794b4c0dd/bin/ukojak/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_026c3ae6-901d-4348-939e-918794b4c0dd/bin/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_026c3ae6-901d-4348-939e-918794b4c0dd/bin/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/forester-heap/dll-sorted-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_026c3ae6-901d-4348-939e-918794b4c0dd/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_026c3ae6-901d-4348-939e-918794b4c0dd/bin/ukojak --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 Kojak --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 635ef9d2e243ceee348a174080644f4e80f3ae61 ...................................................................................................................................................................................................................................................................................... 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 0.2.0-69874e2 [2020-12-01 17:25:55,708 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 17:25:55,712 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 17:25:55,836 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 17:25:55,836 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 17:25:55,851 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 17:25:55,854 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 17:25:55,860 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 17:25:55,864 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 17:25:55,872 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 17:25:55,874 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 17:25:55,877 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 17:25:55,878 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 17:25:55,883 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 17:25:55,886 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 17:25:55,889 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 17:25:55,892 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 17:25:55,893 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 17:25:55,901 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 17:25:55,911 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 17:25:55,914 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 17:25:55,916 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 17:25:55,920 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 17:25:55,921 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 17:25:55,933 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 17:25:55,934 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 17:25:55,935 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 17:25:55,938 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 17:25:55,939 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 17:25:55,941 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 17:25:55,942 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 17:25:55,943 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 17:25:55,946 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 17:25:55,948 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 17:25:55,950 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 17:25:55,950 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 17:25:55,952 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 17:25:55,953 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 17:25:55,953 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 17:25:55,955 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 17:25:55,958 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 17:25:55,961 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_026c3ae6-901d-4348-939e-918794b4c0dd/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf [2020-12-01 17:25:56,012 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 17:25:56,013 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 17:25:56,015 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-01 17:25:56,015 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2020-12-01 17:25:56,016 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 17:25:56,017 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 17:25:56,017 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 17:25:56,018 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 17:25:56,018 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-01 17:25:56,018 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 17:25:56,020 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 17:25:56,020 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-01 17:25:56,021 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 17:25:56,021 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-01 17:25:56,021 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 17:25:56,022 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 17:25:56,022 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 17:25:56,022 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-01 17:25:56,023 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2020-12-01 17:25:56,023 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2020-12-01 17:25:56,023 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 17:25:56,024 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 17:25:56,024 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2020-12-01 17:25:56,024 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 17:25:56,025 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 17:25:56,025 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-01 17:25:56,025 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2020-12-01 17:25:56,026 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-01 17:25:56,026 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-01 17:25:56,026 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_026c3ae6-901d-4348-939e-918794b4c0dd/bin/ukojak/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_026c3ae6-901d-4348-939e-918794b4c0dd/bin/ukojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 635ef9d2e243ceee348a174080644f4e80f3ae61 [2020-12-01 17:25:56,364 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 17:25:56,404 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 17:25:56,407 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 17:25:56,409 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 17:25:56,412 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 17:25:56,413 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_026c3ae6-901d-4348-939e-918794b4c0dd/bin/ukojak/../../sv-benchmarks/c/forester-heap/dll-sorted-1.i [2020-12-01 17:25:56,501 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_026c3ae6-901d-4348-939e-918794b4c0dd/bin/ukojak/data/ac96e10b7/661d1a35992b446db5ea3fd74b64bdaa/FLAG0d788b6fe [2020-12-01 17:25:57,263 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 17:25:57,264 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_026c3ae6-901d-4348-939e-918794b4c0dd/sv-benchmarks/c/forester-heap/dll-sorted-1.i [2020-12-01 17:25:57,284 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_026c3ae6-901d-4348-939e-918794b4c0dd/bin/ukojak/data/ac96e10b7/661d1a35992b446db5ea3fd74b64bdaa/FLAG0d788b6fe [2020-12-01 17:25:57,457 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_026c3ae6-901d-4348-939e-918794b4c0dd/bin/ukojak/data/ac96e10b7/661d1a35992b446db5ea3fd74b64bdaa [2020-12-01 17:25:57,460 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 17:25:57,463 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 17:25:57,468 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 17:25:57,468 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 17:25:57,473 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 17:25:57,475 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 05:25:57" (1/1) ... [2020-12-01 17:25:57,478 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@705182ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:25:57, skipping insertion in model container [2020-12-01 17:25:57,478 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 05:25:57" (1/1) ... [2020-12-01 17:25:57,488 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 17:25:57,566 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 17:25:58,049 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 17:25:58,070 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 17:25:58,126 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 17:25:58,194 INFO L208 MainTranslator]: Completed translation [2020-12-01 17:25:58,195 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:25:58 WrapperNode [2020-12-01 17:25:58,195 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 17:25:58,197 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 17:25:58,197 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 17:25:58,197 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 17:25:58,208 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:25:58" (1/1) ... [2020-12-01 17:25:58,227 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:25:58" (1/1) ... [2020-12-01 17:25:58,263 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 17:25:58,265 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 17:25:58,265 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 17:25:58,265 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 17:25:58,278 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:25:58" (1/1) ... [2020-12-01 17:25:58,279 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:25:58" (1/1) ... [2020-12-01 17:25:58,290 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:25:58" (1/1) ... [2020-12-01 17:25:58,290 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:25:58" (1/1) ... [2020-12-01 17:25:58,304 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:25:58" (1/1) ... [2020-12-01 17:25:58,313 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:25:58" (1/1) ... [2020-12-01 17:25:58,316 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:25:58" (1/1) ... [2020-12-01 17:25:58,321 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 17:25:58,323 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 17:25:58,323 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 17:25:58,323 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 17:25:58,324 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:25:58" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_026c3ae6-901d-4348-939e-918794b4c0dd/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 [2020-12-01 17:25:58,395 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-12-01 17:25:58,396 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-12-01 17:25:58,396 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-01 17:25:58,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-01 17:25:58,396 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-01 17:25:58,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-01 17:25:58,396 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-01 17:25:58,397 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-01 17:25:58,397 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-01 17:25:58,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-01 17:25:58,397 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 17:25:58,397 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 17:25:59,637 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 17:25:59,638 INFO L298 CfgBuilder]: Removed 22 assume(true) statements. [2020-12-01 17:25:59,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 05:25:59 BoogieIcfgContainer [2020-12-01 17:25:59,641 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 17:25:59,643 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2020-12-01 17:25:59,643 INFO L271 PluginConnector]: Initializing CodeCheck... [2020-12-01 17:25:59,657 INFO L275 PluginConnector]: CodeCheck initialized [2020-12-01 17:25:59,657 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 05:25:59" (1/1) ... [2020-12-01 17:25:59,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 17:25:59,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:25:59,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 49 states and 82 transitions. [2020-12-01 17:25:59,740 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 82 transitions. [2020-12-01 17:25:59,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-01 17:25:59,746 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:25:59,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:25:59,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 17:25:59,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:25:59,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 41 states and 64 transitions. [2020-12-01 17:25:59,947 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 64 transitions. [2020-12-01 17:25:59,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-01 17:25:59,948 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:25:59,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:26:00,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 17:26:00,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:26:00,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 43 states and 67 transitions. [2020-12-01 17:26:00,125 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 67 transitions. [2020-12-01 17:26:00,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-01 17:26:00,125 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:26:00,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:26:00,289 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-01 17:26:00,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:26:00,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 42 states and 65 transitions. [2020-12-01 17:26:00,669 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 65 transitions. [2020-12-01 17:26:00,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-01 17:26:00,671 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:26:00,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:26:00,792 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-01 17:26:00,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:26:00,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 42 states and 61 transitions. [2020-12-01 17:26:00,808 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 61 transitions. [2020-12-01 17:26:00,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-01 17:26:00,811 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:26:00,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 17:26:00,903 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 17:26:00,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 17:26:00,978 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 17:26:01,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 17:26:01,149 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 17:26:01,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 17:26:01,261 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 17:26:01,483 WARN L483 CodeCheckObserver]: This program is UNSAFE, Check terminated with 5 iterations. [2020-12-01 17:26:01,551 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 01.12 05:26:01 ImpRootNode [2020-12-01 17:26:01,551 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2020-12-01 17:26:01,553 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 17:26:01,553 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 17:26:01,553 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 17:26:01,554 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 05:25:59" (3/4) ... [2020-12-01 17:26:01,557 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-01 17:26:01,679 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_026c3ae6-901d-4348-939e-918794b4c0dd/bin/ukojak/witness.graphml [2020-12-01 17:26:01,679 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 17:26:01,682 INFO L168 Benchmark]: Toolchain (without parser) took 4217.21 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 69.8 MB in the beginning and 73.1 MB in the end (delta: -3.3 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-12-01 17:26:01,682 INFO L168 Benchmark]: CDTParser took 0.38 ms. Allocated memory is still 100.7 MB. Free memory was 57.8 MB in the beginning and 57.8 MB in the end (delta: 16.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 17:26:01,683 INFO L168 Benchmark]: CACSL2BoogieTranslator took 727.62 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 69.4 MB in the beginning and 84.8 MB in the end (delta: -15.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-01 17:26:01,684 INFO L168 Benchmark]: Boogie Procedure Inliner took 66.95 ms. Allocated memory is still 121.6 MB. Free memory was 84.8 MB in the beginning and 82.6 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 17:26:01,684 INFO L168 Benchmark]: Boogie Preprocessor took 57.17 ms. Allocated memory is still 121.6 MB. Free memory was 82.6 MB in the beginning and 80.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 17:26:01,685 INFO L168 Benchmark]: RCFGBuilder took 1318.86 ms. Allocated memory is still 121.6 MB. Free memory was 80.6 MB in the beginning and 91.2 MB in the end (delta: -10.6 MB). Peak memory consumption was 50.3 MB. Max. memory is 16.1 GB. [2020-12-01 17:26:01,685 INFO L168 Benchmark]: CodeCheck took 1909.60 ms. Allocated memory is still 121.6 MB. Free memory was 91.2 MB in the beginning and 76.1 MB in the end (delta: 15.1 MB). Peak memory consumption was 18.4 MB. Max. memory is 16.1 GB. [2020-12-01 17:26:01,686 INFO L168 Benchmark]: Witness Printer took 126.79 ms. Allocated memory is still 121.6 MB. Free memory was 76.1 MB in the beginning and 73.1 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 17:26:01,691 INFO L339 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, 49 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.7s, OverallIterations: 5, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 170 SDtfs, 40 SDslu, 48 SDs, 0 SdLazy, 152 SolverSat, 64 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 331 GetRequests, 317 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 60 NumberOfCodeBlocks, 60 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 38 ConstructedInterpolants, 0 QuantifiedInterpolants, 612 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 4/4 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: 985]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L997] SLL* head = malloc(sizeof(SLL)); [L998] head->next = ((void*)0) [L999] head->prev = ((void*)0) [L1000] head->data = 0 [L1002] SLL* x = head; [L1003] int marked = 0; [L1006] COND TRUE __VERIFIER_nondet_int() || !marked [L1009] x->next = malloc(sizeof(SLL)) [L1010] EXPR x->next [L1010] x->next->prev = x [L1011] EXPR x->next [L1011] x = x->next [L1012] x->next = ((void*)0) [L1014] COND TRUE __VERIFIER_nondet_int() [L1016] marked = 1 [L1019] COND TRUE \read(marked) [L1020] x->data = 1 [L1006] COND FALSE !(__VERIFIER_nondet_int() || !marked) [L1025] x = head [L1027] COND FALSE !(!(((void*)0) != x)) [L1028] marked = 0 [L1030] EXPR x->next [L1030] x->next != ((void*)0) && x->next->data == 0 [L1030] EXPR x->next [L1030] EXPR x->next->data [L1030] x->next != ((void*)0) && x->next->data == 0 [L1030] COND FALSE !(x->next != ((void*)0) && x->next->data == 0) [L1035] EXPR x->next [L1035] x->next != ((void*)0) && __VERIFIER_nondet_int() [L1035] x->next != ((void*)0) && __VERIFIER_nondet_int() [L1035] COND TRUE x->next != ((void*)0) && __VERIFIER_nondet_int() [L1037] EXPR x->next [L1037] x = x->next [L1038] EXPR x->data [L1038] COND TRUE !(x->data != 1) [L1038] CALL reach_error() [L985] COND FALSE !(0) [L985] __assert_fail ("0", "dll-sorted-1.c", 16, __extension__ __PRETTY_FUNCTION__) * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38 ms. Allocated memory is still 100.7 MB. Free memory was 57.8 MB in the beginning and 57.8 MB in the end (delta: 16.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 727.62 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 69.4 MB in the beginning and 84.8 MB in the end (delta: -15.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 66.95 ms. Allocated memory is still 121.6 MB. Free memory was 84.8 MB in the beginning and 82.6 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 57.17 ms. Allocated memory is still 121.6 MB. Free memory was 82.6 MB in the beginning and 80.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1318.86 ms. Allocated memory is still 121.6 MB. Free memory was 80.6 MB in the beginning and 91.2 MB in the end (delta: -10.6 MB). Peak memory consumption was 50.3 MB. Max. memory is 16.1 GB. * CodeCheck took 1909.60 ms. Allocated memory is still 121.6 MB. Free memory was 91.2 MB in the beginning and 76.1 MB in the end (delta: 15.1 MB). Peak memory consumption was 18.4 MB. Max. memory is 16.1 GB. * Witness Printer took 126.79 ms. Allocated memory is still 121.6 MB. Free memory was 76.1 MB in the beginning and 73.1 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...