./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/forester-heap/sll-circular-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_2a1b1c68-2a2a-4b54-a145-9df92230ab75/bin/ukojak/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_2a1b1c68-2a2a-4b54-a145-9df92230ab75/bin/ukojak/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_2a1b1c68-2a2a-4b54-a145-9df92230ab75/bin/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_2a1b1c68-2a2a-4b54-a145-9df92230ab75/bin/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/forester-heap/sll-circular-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_2a1b1c68-2a2a-4b54-a145-9df92230ab75/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_2a1b1c68-2a2a-4b54-a145-9df92230ab75/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 b651d63eb42259dfd3a213a6671e4c58ee528ad0 .............................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-01 20:41:06,665 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-01 20:41:06,666 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-01 20:41:06,673 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-01 20:41:06,673 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-01 20:41:06,674 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-01 20:41:06,675 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-01 20:41:06,677 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-01 20:41:06,678 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-01 20:41:06,679 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-01 20:41:06,680 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-01 20:41:06,680 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-01 20:41:06,681 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-01 20:41:06,681 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-01 20:41:06,682 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-01 20:41:06,683 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-01 20:41:06,684 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-01 20:41:06,684 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-01 20:41:06,686 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-01 20:41:06,687 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-01 20:41:06,689 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-01 20:41:06,689 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-01 20:41:06,690 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-01 20:41:06,691 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-01 20:41:06,692 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-01 20:41:06,692 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-01 20:41:06,692 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-01 20:41:06,693 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-01 20:41:06,693 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-01 20:41:06,694 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-01 20:41:06,694 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-01 20:41:06,694 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-01 20:41:06,695 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-01 20:41:06,695 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-01 20:41:06,696 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-01 20:41:06,696 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-01 20:41:06,697 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-01 20:41:06,697 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-01 20:41:06,697 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-01 20:41:06,698 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-01 20:41:06,699 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-01 20:41:06,699 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_2a1b1c68-2a2a-4b54-a145-9df92230ab75/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf [2019-12-01 20:41:06,711 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-01 20:41:06,712 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-01 20:41:06,712 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-01 20:41:06,713 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2019-12-01 20:41:06,713 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-01 20:41:06,713 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-01 20:41:06,714 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-01 20:41:06,714 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-01 20:41:06,714 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-01 20:41:06,714 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-01 20:41:06,714 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-01 20:41:06,715 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-01 20:41:06,715 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-01 20:41:06,715 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-01 20:41:06,715 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-01 20:41:06,715 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-01 20:41:06,716 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-01 20:41:06,716 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-01 20:41:06,716 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2019-12-01 20:41:06,716 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2019-12-01 20:41:06,716 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-01 20:41:06,716 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-01 20:41:06,717 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2019-12-01 20:41:06,717 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-01 20:41:06,717 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-01 20:41:06,717 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-01 20:41:06,717 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2019-12-01 20:41:06,718 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-01 20:41:06,718 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-01 20:41:06,718 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_2a1b1c68-2a2a-4b54-a145-9df92230ab75/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 -> b651d63eb42259dfd3a213a6671e4c58ee528ad0 [2019-12-01 20:41:06,827 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-01 20:41:06,837 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-01 20:41:06,840 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-01 20:41:06,841 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-01 20:41:06,842 INFO L275 PluginConnector]: CDTParser initialized [2019-12-01 20:41:06,842 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_2a1b1c68-2a2a-4b54-a145-9df92230ab75/bin/ukojak/../../sv-benchmarks/c/forester-heap/sll-circular-2.i [2019-12-01 20:41:06,886 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2a1b1c68-2a2a-4b54-a145-9df92230ab75/bin/ukojak/data/0e9a39e71/e8fb634d67fe43a0ad8018d15060fb17/FLAGe518781bd [2019-12-01 20:41:07,333 INFO L306 CDTParser]: Found 1 translation units. [2019-12-01 20:41:07,334 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_2a1b1c68-2a2a-4b54-a145-9df92230ab75/sv-benchmarks/c/forester-heap/sll-circular-2.i [2019-12-01 20:41:07,342 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2a1b1c68-2a2a-4b54-a145-9df92230ab75/bin/ukojak/data/0e9a39e71/e8fb634d67fe43a0ad8018d15060fb17/FLAGe518781bd [2019-12-01 20:41:07,350 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_2a1b1c68-2a2a-4b54-a145-9df92230ab75/bin/ukojak/data/0e9a39e71/e8fb634d67fe43a0ad8018d15060fb17 [2019-12-01 20:41:07,352 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-01 20:41:07,353 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-01 20:41:07,353 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-01 20:41:07,353 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-01 20:41:07,355 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-01 20:41:07,356 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 08:41:07" (1/1) ... [2019-12-01 20:41:07,358 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48ac8ce1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 08:41:07, skipping insertion in model container [2019-12-01 20:41:07,358 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 08:41:07" (1/1) ... [2019-12-01 20:41:07,362 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-01 20:41:07,389 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-01 20:41:07,583 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-01 20:41:07,589 INFO L203 MainTranslator]: Completed pre-run [2019-12-01 20:41:07,618 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-01 20:41:07,654 INFO L208 MainTranslator]: Completed translation [2019-12-01 20:41:07,654 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 08:41:07 WrapperNode [2019-12-01 20:41:07,654 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-01 20:41:07,655 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-01 20:41:07,655 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-01 20:41:07,655 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-01 20:41:07,661 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 08:41:07" (1/1) ... [2019-12-01 20:41:07,671 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 08:41:07" (1/1) ... [2019-12-01 20:41:07,686 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-01 20:41:07,686 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-01 20:41:07,686 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-01 20:41:07,686 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-01 20:41:07,692 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 08:41:07" (1/1) ... [2019-12-01 20:41:07,692 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 08:41:07" (1/1) ... [2019-12-01 20:41:07,694 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 08:41:07" (1/1) ... [2019-12-01 20:41:07,694 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 08:41:07" (1/1) ... [2019-12-01 20:41:07,702 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 08:41:07" (1/1) ... [2019-12-01 20:41:07,707 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 08:41:07" (1/1) ... [2019-12-01 20:41:07,709 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 08:41:07" (1/1) ... [2019-12-01 20:41:07,711 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-01 20:41:07,712 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-01 20:41:07,712 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-01 20:41:07,712 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-01 20:41:07,712 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 08:41:07" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2a1b1c68-2a2a-4b54-a145-9df92230ab75/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 [2019-12-01 20:41:07,752 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-01 20:41:07,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-01 20:41:07,753 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-12-01 20:41:07,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-12-01 20:41:07,753 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-12-01 20:41:07,753 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-01 20:41:07,753 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-01 20:41:07,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-01 20:41:07,997 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-01 20:41:07,997 INFO L287 CfgBuilder]: Removed 13 assume(true) statements. [2019-12-01 20:41:07,998 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 08:41:07 BoogieIcfgContainer [2019-12-01 20:41:07,998 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-01 20:41:07,998 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2019-12-01 20:41:07,999 INFO L271 PluginConnector]: Initializing CodeCheck... [2019-12-01 20:41:08,005 INFO L275 PluginConnector]: CodeCheck initialized [2019-12-01 20:41:08,006 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 08:41:07" (1/1) ... [2019-12-01 20:41:08,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-01 20:41:08,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-12-01 20:41:08,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 29 states and 46 transitions. [2019-12-01 20:41:08,035 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 46 transitions. [2019-12-01 20:41:08,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-12-01 20:41:08,037 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-12-01 20:41:08,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-01 20:41:08,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-01 20:41:08,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-12-01 20:41:08,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 29 states and 41 transitions. [2019-12-01 20:41:08,133 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 41 transitions. [2019-12-01 20:41:08,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-12-01 20:41:08,133 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-12-01 20:41:08,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-01 20:41:08,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-01 20:41:08,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-12-01 20:41:08,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 33 states and 49 transitions. [2019-12-01 20:41:08,275 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 49 transitions. [2019-12-01 20:41:08,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-12-01 20:41:08,275 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-12-01 20:41:08,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-01 20:41:08,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-01 20:41:08,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-12-01 20:41:08,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 35 states and 51 transitions. [2019-12-01 20:41:08,326 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 51 transitions. [2019-12-01 20:41:08,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-01 20:41:08,328 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-12-01 20:41:08,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-01 20:41:08,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-01 20:41:08,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-12-01 20:41:08,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 35 states and 50 transitions. [2019-12-01 20:41:08,363 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 50 transitions. [2019-12-01 20:41:08,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-01 20:41:08,364 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-12-01 20:41:08,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-01 20:41:08,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-01 20:41:08,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-12-01 20:41:08,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 39 states and 57 transitions. [2019-12-01 20:41:08,518 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 57 transitions. [2019-12-01 20:41:08,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-01 20:41:08,518 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-12-01 20:41:08,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-01 20:41:08,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-01 20:41:08,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-01 20:41:08,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-01 20:41:08,606 WARN L483 CodeCheckObserver]: This program is UNSAFE, Check terminated with 6 iterations. [2019-12-01 20:41:08,628 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 01.12 08:41:08 ImpRootNode [2019-12-01 20:41:08,628 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2019-12-01 20:41:08,628 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-01 20:41:08,628 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-01 20:41:08,628 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-01 20:41:08,629 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 08:41:07" (3/4) ... [2019-12-01 20:41:08,630 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-12-01 20:41:08,660 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_2a1b1c68-2a2a-4b54-a145-9df92230ab75/bin/ukojak/witness.graphml [2019-12-01 20:41:08,660 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-01 20:41:08,662 INFO L168 Benchmark]: Toolchain (without parser) took 1308.93 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 109.1 MB). Free memory was 939.7 MB in the beginning and 982.3 MB in the end (delta: -42.6 MB). Peak memory consumption was 66.5 MB. Max. memory is 11.5 GB. [2019-12-01 20:41:08,662 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 961.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-01 20:41:08,663 INFO L168 Benchmark]: CACSL2BoogieTranslator took 301.67 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 109.1 MB). Free memory was 939.7 MB in the beginning and 1.1 GB in the end (delta: -153.3 MB). Peak memory consumption was 17.8 MB. Max. memory is 11.5 GB. [2019-12-01 20:41:08,663 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.69 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-01 20:41:08,663 INFO L168 Benchmark]: Boogie Preprocessor took 25.37 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-12-01 20:41:08,664 INFO L168 Benchmark]: RCFGBuilder took 286.70 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 28.3 MB). Peak memory consumption was 28.3 MB. Max. memory is 11.5 GB. [2019-12-01 20:41:08,664 INFO L168 Benchmark]: CodeCheck took 629.26 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 987.7 MB in the end (delta: 71.7 MB). Peak memory consumption was 71.7 MB. Max. memory is 11.5 GB. [2019-12-01 20:41:08,665 INFO L168 Benchmark]: Witness Printer took 32.53 ms. Allocated memory is still 1.1 GB. Free memory was 987.7 MB in the beginning and 982.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-12-01 20:41:08,667 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 1 procedures, 29 locations, 3 error locations. Result: UNSAFE, OverallTime: 0.5s, OverallIterations: 6, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 256 SDtfs, 120 SDslu, 220 SDs, 0 SdLazy, 266 SolverSat, 82 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 276 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 46 NumberOfCodeBlocks, 46 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 30 ConstructedInterpolants, 0 QuantifiedInterpolants, 617 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 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: 1021]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L985] SLL* head = malloc(sizeof(SLL)); [L986] head->next = head [L987] head->data = 0 [L989] SLL* x = head; [L990] int state = 1; [L993] COND FALSE !(__VERIFIER_nondet_int()) [L1014] x->data = state [L1016] EXPR head->next [L1016] x = head->next [L1017] COND FALSE !(!(((void*)0) != x)) [L1019] EXPR x->data [L1019] COND TRUE x->data != 0 [L1021] EXPR x->next [L1021] EXPR x->next->data [L1021] EXPR x->next->data != 0 && x->data > x->next->data [L1021] EXPR x->data [L1021] EXPR x->next [L1021] EXPR x->next->data [L1021] EXPR x->next->data != 0 && x->data > x->next->data [L1021] COND TRUE !(x->next->data != 0 && x->data > x->next->data) [L1021] __VERIFIER_error() * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 961.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 301.67 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 109.1 MB). Free memory was 939.7 MB in the beginning and 1.1 GB in the end (delta: -153.3 MB). Peak memory consumption was 17.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 30.69 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 25.37 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 286.70 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 28.3 MB). Peak memory consumption was 28.3 MB. Max. memory is 11.5 GB. * CodeCheck took 629.26 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 987.7 MB in the end (delta: 71.7 MB). Peak memory consumption was 71.7 MB. Max. memory is 11.5 GB. * Witness Printer took 32.53 ms. Allocated memory is still 1.1 GB. Free memory was 987.7 MB in the beginning and 982.3 MB 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...