./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/forester-heap/dll-token-2.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_a279127f-9734-4acc-89d6-61a90aa0a763/bin/ukojak/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_a279127f-9734-4acc-89d6-61a90aa0a763/bin/ukojak/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_a279127f-9734-4acc-89d6-61a90aa0a763/bin/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_a279127f-9734-4acc-89d6-61a90aa0a763/bin/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/forester-heap/dll-token-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_a279127f-9734-4acc-89d6-61a90aa0a763/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_a279127f-9734-4acc-89d6-61a90aa0a763/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 1d66a07d2a90ded112831066684eab385c0c1369 ....................................................................................................................................................................................................................................................................................... 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 16:55:05,540 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 16:55:05,555 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 16:55:05,612 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 16:55:05,613 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 16:55:05,614 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 16:55:05,616 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 16:55:05,618 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 16:55:05,621 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 16:55:05,622 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 16:55:05,623 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 16:55:05,625 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 16:55:05,626 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 16:55:05,627 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 16:55:05,628 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 16:55:05,632 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 16:55:05,633 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 16:55:05,634 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 16:55:05,636 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 16:55:05,639 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 16:55:05,641 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 16:55:05,643 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 16:55:05,645 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 16:55:05,646 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 16:55:05,653 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 16:55:05,656 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 16:55:05,656 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 16:55:05,657 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 16:55:05,662 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 16:55:05,663 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 16:55:05,664 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 16:55:05,664 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 16:55:05,666 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 16:55:05,668 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 16:55:05,669 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 16:55:05,670 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 16:55:05,670 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 16:55:05,671 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 16:55:05,671 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 16:55:05,672 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 16:55:05,673 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 16:55:05,675 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_a279127f-9734-4acc-89d6-61a90aa0a763/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf [2020-12-01 16:55:05,711 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 16:55:05,716 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 16:55:05,717 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-01 16:55:05,718 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2020-12-01 16:55:05,718 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 16:55:05,719 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 16:55:05,719 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 16:55:05,719 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 16:55:05,719 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-01 16:55:05,719 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 16:55:05,721 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 16:55:05,721 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-01 16:55:05,721 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 16:55:05,721 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-01 16:55:05,721 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 16:55:05,722 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 16:55:05,722 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 16:55:05,722 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-01 16:55:05,722 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2020-12-01 16:55:05,723 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2020-12-01 16:55:05,723 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 16:55:05,723 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 16:55:05,723 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2020-12-01 16:55:05,723 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 16:55:05,724 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 16:55:05,724 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-01 16:55:05,724 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2020-12-01 16:55:05,724 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-01 16:55:05,725 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-01 16:55:05,725 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_a279127f-9734-4acc-89d6-61a90aa0a763/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_a279127f-9734-4acc-89d6-61a90aa0a763/bin/ukojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1d66a07d2a90ded112831066684eab385c0c1369 [2020-12-01 16:55:06,010 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 16:55:06,046 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 16:55:06,050 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 16:55:06,051 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 16:55:06,053 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 16:55:06,054 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_a279127f-9734-4acc-89d6-61a90aa0a763/bin/ukojak/../../sv-benchmarks/c/forester-heap/dll-token-2.i [2020-12-01 16:55:06,126 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a279127f-9734-4acc-89d6-61a90aa0a763/bin/ukojak/data/3c5cd2a61/1b1cf1bee5214080bc3196c68ecc6a84/FLAGeb324c2fb [2020-12-01 16:55:06,661 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 16:55:06,661 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_a279127f-9734-4acc-89d6-61a90aa0a763/sv-benchmarks/c/forester-heap/dll-token-2.i [2020-12-01 16:55:06,679 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a279127f-9734-4acc-89d6-61a90aa0a763/bin/ukojak/data/3c5cd2a61/1b1cf1bee5214080bc3196c68ecc6a84/FLAGeb324c2fb [2020-12-01 16:55:06,958 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_a279127f-9734-4acc-89d6-61a90aa0a763/bin/ukojak/data/3c5cd2a61/1b1cf1bee5214080bc3196c68ecc6a84 [2020-12-01 16:55:06,961 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 16:55:06,963 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 16:55:06,965 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 16:55:06,966 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 16:55:06,970 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 16:55:06,971 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 04:55:06" (1/1) ... [2020-12-01 16:55:06,974 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a53727c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:55:06, skipping insertion in model container [2020-12-01 16:55:06,974 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 04:55:06" (1/1) ... [2020-12-01 16:55:06,982 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 16:55:07,048 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 16:55:07,333 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 16:55:07,341 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 16:55:07,382 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 16:55:07,449 INFO L208 MainTranslator]: Completed translation [2020-12-01 16:55:07,449 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:55:07 WrapperNode [2020-12-01 16:55:07,450 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 16:55:07,451 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 16:55:07,451 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 16:55:07,451 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 16:55:07,466 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:55:07" (1/1) ... [2020-12-01 16:55:07,485 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:55:07" (1/1) ... [2020-12-01 16:55:07,506 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 16:55:07,507 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 16:55:07,508 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 16:55:07,508 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 16:55:07,516 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:55:07" (1/1) ... [2020-12-01 16:55:07,517 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:55:07" (1/1) ... [2020-12-01 16:55:07,521 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:55:07" (1/1) ... [2020-12-01 16:55:07,526 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:55:07" (1/1) ... [2020-12-01 16:55:07,541 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:55:07" (1/1) ... [2020-12-01 16:55:07,552 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:55:07" (1/1) ... [2020-12-01 16:55:07,554 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:55:07" (1/1) ... [2020-12-01 16:55:07,557 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 16:55:07,558 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 16:55:07,558 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 16:55:07,568 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 16:55:07,569 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:55:07" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a279127f-9734-4acc-89d6-61a90aa0a763/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 16:55:07,650 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-12-01 16:55:07,651 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-12-01 16:55:07,651 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-01 16:55:07,651 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-01 16:55:07,651 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-01 16:55:07,651 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-01 16:55:07,652 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-01 16:55:07,652 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-01 16:55:07,652 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-01 16:55:07,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-01 16:55:07,653 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 16:55:07,653 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 16:55:08,290 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 16:55:08,290 INFO L298 CfgBuilder]: Removed 19 assume(true) statements. [2020-12-01 16:55:08,292 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 04:55:08 BoogieIcfgContainer [2020-12-01 16:55:08,292 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 16:55:08,293 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2020-12-01 16:55:08,293 INFO L271 PluginConnector]: Initializing CodeCheck... [2020-12-01 16:55:08,304 INFO L275 PluginConnector]: CodeCheck initialized [2020-12-01 16:55:08,304 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 04:55:08" (1/1) ... [2020-12-01 16:55:08,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:55:08,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 16:55:08,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 46 states and 75 transitions. [2020-12-01 16:55:08,357 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 75 transitions. [2020-12-01 16:55:08,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-01 16:55:08,362 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 16:55:08,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:55:08,615 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 16:55:08,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 16:55:08,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 39 states and 59 transitions. [2020-12-01 16:55:08,672 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 59 transitions. [2020-12-01 16:55:08,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-01 16:55:08,672 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 16:55:08,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:55:08,736 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 16:55:08,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 16:55:08,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 43 states and 64 transitions. [2020-12-01 16:55:08,858 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 64 transitions. [2020-12-01 16:55:08,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-01 16:55:08,859 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 16:55:08,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:55:08,903 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 16:55:08,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 16:55:08,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 43 states and 61 transitions. [2020-12-01 16:55:08,911 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 61 transitions. [2020-12-01 16:55:08,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-01 16:55:08,912 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 16:55:08,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:55:09,015 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 16:55:09,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 16:55:09,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 38 states and 52 transitions. [2020-12-01 16:55:09,231 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 52 transitions. [2020-12-01 16:55:09,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-01 16:55:09,232 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 16:55:09,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:55:09,357 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 16:55:09,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 16:55:09,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 37 states and 50 transitions. [2020-12-01 16:55:09,456 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 50 transitions. [2020-12-01 16:55:09,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-01 16:55:09,456 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 16:55:09,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:55:09,629 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 16:55:10,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 16:55:10,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 44 states and 59 transitions. [2020-12-01 16:55:10,354 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 59 transitions. [2020-12-01 16:55:10,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-01 16:55:10,355 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 16:55:10,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 16:55:10,376 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 16:55:10,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 16:55:10,394 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 16:55:10,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 16:55:10,493 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 16:55:10,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 16:55:10,542 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 16:55:10,720 WARN L483 CodeCheckObserver]: This program is UNSAFE, Check terminated with 7 iterations. [2020-12-01 16:55:10,761 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 01.12 04:55:10 ImpRootNode [2020-12-01 16:55:10,775 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2020-12-01 16:55:10,776 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 16:55:10,776 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 16:55:10,776 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 16:55:10,777 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 04:55:08" (3/4) ... [2020-12-01 16:55:10,779 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-01 16:55:10,857 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_a279127f-9734-4acc-89d6-61a90aa0a763/bin/ukojak/witness.graphml [2020-12-01 16:55:10,858 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 16:55:10,860 INFO L168 Benchmark]: Toolchain (without parser) took 3895.63 ms. Allocated memory was 117.4 MB in the beginning and 148.9 MB in the end (delta: 31.5 MB). Free memory was 79.0 MB in the beginning and 68.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 41.4 MB. Max. memory is 16.1 GB. [2020-12-01 16:55:10,864 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 117.4 MB. Free memory was 96.8 MB in the beginning and 96.8 MB in the end (delta: 62.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 16:55:10,869 INFO L168 Benchmark]: CACSL2BoogieTranslator took 484.53 ms. Allocated memory is still 117.4 MB. Free memory was 78.8 MB in the beginning and 81.4 MB in the end (delta: -2.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-01 16:55:10,870 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.89 ms. Allocated memory is still 117.4 MB. Free memory was 81.4 MB in the beginning and 79.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 16:55:10,870 INFO L168 Benchmark]: Boogie Preprocessor took 50.05 ms. Allocated memory is still 117.4 MB. Free memory was 79.3 MB in the beginning and 77.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 16:55:10,871 INFO L168 Benchmark]: RCFGBuilder took 734.37 ms. Allocated memory is still 117.4 MB. Free memory was 77.5 MB in the beginning and 49.6 MB in the end (delta: 27.9 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. [2020-12-01 16:55:10,872 INFO L168 Benchmark]: CodeCheck took 2481.84 ms. Allocated memory was 117.4 MB in the beginning and 148.9 MB in the end (delta: 31.5 MB). Free memory was 49.6 MB in the beginning and 71.5 MB in the end (delta: -21.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 16.1 GB. [2020-12-01 16:55:10,875 INFO L168 Benchmark]: Witness Printer took 82.75 ms. Allocated memory is still 148.9 MB. Free memory was 71.5 MB in the beginning and 68.3 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-01 16:55:10,880 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, 46 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.3s, OverallIterations: 7, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 652 SDtfs, 294 SDslu, 570 SDs, 0 SdLazy, 768 SolverSat, 324 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 552 GetRequests, 508 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 511 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 82 NumberOfCodeBlocks, 82 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 59 ConstructedInterpolants, 0 QuantifiedInterpolants, 2253 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 2/2 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: 992]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L1004] SLL* head = malloc(sizeof(SLL)); [L1005] head->next = ((void*)0) [L1006] head->prev = ((void*)0) [L1007] head->data = 0 [L1009] SLL* x = head; [L1012] COND FALSE !(__VERIFIER_nondet_int()) [L1021] x->data = 1 [L1022] x->next = malloc(sizeof(SLL)) [L1023] EXPR x->next [L1023] x->next->prev = x [L1024] EXPR x->next [L1024] x->next->data = 2 [L1026] x = head [L1028] COND FALSE !(!(((void*)0) != x)) [L1030] EXPR x->data [L1030] COND FALSE !(1 != x->data) [L1035] EXPR x->data [L1035] COND FALSE !(!(1 == x->data)) [L1036] EXPR x->next [L1036] x = x->next [L1037] EXPR x->data [L1037] COND TRUE !(2 != x->data) [L1037] CALL reach_error() [L992] COND FALSE !(0) [L992] __assert_fail ("0", "dll-token-2.c", 12, __extension__ __PRETTY_FUNCTION__) * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 117.4 MB. Free memory was 96.8 MB in the beginning and 96.8 MB in the end (delta: 62.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 484.53 ms. Allocated memory is still 117.4 MB. Free memory was 78.8 MB in the beginning and 81.4 MB in the end (delta: -2.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 55.89 ms. Allocated memory is still 117.4 MB. Free memory was 81.4 MB in the beginning and 79.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 50.05 ms. Allocated memory is still 117.4 MB. Free memory was 79.3 MB in the beginning and 77.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 734.37 ms. Allocated memory is still 117.4 MB. Free memory was 77.5 MB in the beginning and 49.6 MB in the end (delta: 27.9 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. * CodeCheck took 2481.84 ms. Allocated memory was 117.4 MB in the beginning and 148.9 MB in the end (delta: 31.5 MB). Free memory was 49.6 MB in the beginning and 71.5 MB in the end (delta: -21.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 16.1 GB. * Witness Printer took 82.75 ms. Allocated memory is still 148.9 MB. Free memory was 71.5 MB in the beginning and 68.3 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...