./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/forester-heap/dll-01-1.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_e945f70a-5664-4687-b397-11d1ce567cfd/bin/ukojak/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_e945f70a-5664-4687-b397-11d1ce567cfd/bin/ukojak/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_e945f70a-5664-4687-b397-11d1ce567cfd/bin/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_e945f70a-5664-4687-b397-11d1ce567cfd/bin/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/forester-heap/dll-01-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_e945f70a-5664-4687-b397-11d1ce567cfd/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_e945f70a-5664-4687-b397-11d1ce567cfd/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 cdf63a831807312c569006a76efbe1414243703d ................................................................................................................................................................................................................................................................................................................................ 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 16:40:24,667 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 16:40:24,672 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 16:40:24,741 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 16:40:24,742 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 16:40:24,744 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 16:40:24,747 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 16:40:24,750 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 16:40:24,753 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 16:40:24,755 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 16:40:24,757 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 16:40:24,759 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 16:40:24,760 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 16:40:24,762 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 16:40:24,764 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 16:40:24,766 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 16:40:24,768 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 16:40:24,770 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 16:40:24,783 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 16:40:24,786 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 16:40:24,789 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 16:40:24,796 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 16:40:24,798 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 16:40:24,799 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 16:40:24,804 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 16:40:24,804 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 16:40:24,805 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 16:40:24,818 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 16:40:24,819 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 16:40:24,821 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 16:40:24,822 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 16:40:24,824 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 16:40:24,827 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 16:40:24,832 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 16:40:24,835 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 16:40:24,836 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 16:40:24,837 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 16:40:24,838 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 16:40:24,838 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 16:40:24,840 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 16:40:24,841 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 16:40:24,845 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_e945f70a-5664-4687-b397-11d1ce567cfd/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf [2020-12-01 16:40:24,905 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 16:40:24,905 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 16:40:24,907 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-01 16:40:24,908 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2020-12-01 16:40:24,909 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 16:40:24,909 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 16:40:24,910 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 16:40:24,910 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 16:40:24,911 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-01 16:40:24,911 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 16:40:24,913 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 16:40:24,913 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-01 16:40:24,914 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 16:40:24,914 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-01 16:40:24,914 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 16:40:24,914 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 16:40:24,915 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 16:40:24,915 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-01 16:40:24,915 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2020-12-01 16:40:24,916 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2020-12-01 16:40:24,916 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 16:40:24,916 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 16:40:24,917 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2020-12-01 16:40:24,917 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 16:40:24,917 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 16:40:24,918 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-01 16:40:24,918 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2020-12-01 16:40:24,918 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-01 16:40:24,919 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-01 16:40:24,919 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_e945f70a-5664-4687-b397-11d1ce567cfd/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_e945f70a-5664-4687-b397-11d1ce567cfd/bin/ukojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cdf63a831807312c569006a76efbe1414243703d [2020-12-01 16:40:25,276 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 16:40:25,337 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 16:40:25,343 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 16:40:25,346 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 16:40:25,347 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 16:40:25,349 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_e945f70a-5664-4687-b397-11d1ce567cfd/bin/ukojak/../../sv-benchmarks/c/forester-heap/dll-01-1.i [2020-12-01 16:40:25,490 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e945f70a-5664-4687-b397-11d1ce567cfd/bin/ukojak/data/3a70a4e5d/202cd7bacb9641dc971c86405d587882/FLAGb92e26b2b [2020-12-01 16:40:26,135 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 16:40:26,138 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_e945f70a-5664-4687-b397-11d1ce567cfd/sv-benchmarks/c/forester-heap/dll-01-1.i [2020-12-01 16:40:26,163 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e945f70a-5664-4687-b397-11d1ce567cfd/bin/ukojak/data/3a70a4e5d/202cd7bacb9641dc971c86405d587882/FLAGb92e26b2b [2020-12-01 16:40:26,451 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_e945f70a-5664-4687-b397-11d1ce567cfd/bin/ukojak/data/3a70a4e5d/202cd7bacb9641dc971c86405d587882 [2020-12-01 16:40:26,456 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 16:40:26,461 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 16:40:26,467 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 16:40:26,467 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 16:40:26,472 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 16:40:26,474 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 04:40:26" (1/1) ... [2020-12-01 16:40:26,482 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f54d9b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:40:26, skipping insertion in model container [2020-12-01 16:40:26,482 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 04:40:26" (1/1) ... [2020-12-01 16:40:26,497 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 16:40:26,582 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 16:40:27,024 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 16:40:27,041 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 16:40:27,153 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 16:40:27,238 INFO L208 MainTranslator]: Completed translation [2020-12-01 16:40:27,241 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:40:27 WrapperNode [2020-12-01 16:40:27,241 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 16:40:27,245 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 16:40:27,245 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 16:40:27,246 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 16:40:27,255 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:40:27" (1/1) ... [2020-12-01 16:40:27,276 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:40:27" (1/1) ... [2020-12-01 16:40:27,315 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 16:40:27,316 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 16:40:27,317 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 16:40:27,317 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 16:40:27,328 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:40:27" (1/1) ... [2020-12-01 16:40:27,329 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:40:27" (1/1) ... [2020-12-01 16:40:27,334 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:40:27" (1/1) ... [2020-12-01 16:40:27,347 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:40:27" (1/1) ... [2020-12-01 16:40:27,375 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:40:27" (1/1) ... [2020-12-01 16:40:27,398 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:40:27" (1/1) ... [2020-12-01 16:40:27,402 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:40:27" (1/1) ... [2020-12-01 16:40:27,407 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 16:40:27,409 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 16:40:27,409 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 16:40:27,409 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 16:40:27,411 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:40:27" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e945f70a-5664-4687-b397-11d1ce567cfd/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 16:40:27,504 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-12-01 16:40:27,504 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-12-01 16:40:27,504 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-01 16:40:27,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-01 16:40:27,505 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-01 16:40:27,505 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-01 16:40:27,506 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-01 16:40:27,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-01 16:40:27,506 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 16:40:27,506 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 16:40:28,668 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 16:40:28,668 INFO L298 CfgBuilder]: Removed 34 assume(true) statements. [2020-12-01 16:40:28,672 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 04:40:28 BoogieIcfgContainer [2020-12-01 16:40:28,672 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 16:40:28,673 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2020-12-01 16:40:28,674 INFO L271 PluginConnector]: Initializing CodeCheck... [2020-12-01 16:40:28,689 INFO L275 PluginConnector]: CodeCheck initialized [2020-12-01 16:40:28,690 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 04:40:28" (1/1) ... [2020-12-01 16:40:28,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:40:28,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 16:40:28,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 79 states and 136 transitions. [2020-12-01 16:40:28,788 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 136 transitions. [2020-12-01 16:40:28,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-01 16:40:28,795 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 16:40:28,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:40:29,037 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 16:40:29,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 16:40:29,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 63 states and 103 transitions. [2020-12-01 16:40:29,092 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 103 transitions. [2020-12-01 16:40:29,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-01 16:40:29,093 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 16:40:29,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:40:29,269 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 16:40:29,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 16:40:29,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 62 states and 99 transitions. [2020-12-01 16:40:29,309 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 99 transitions. [2020-12-01 16:40:29,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-01 16:40:29,311 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 16:40:29,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:40:29,589 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 16:40:29,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 16:40:29,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 63 states and 97 transitions. [2020-12-01 16:40:29,925 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 97 transitions. [2020-12-01 16:40:29,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-01 16:40:29,927 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 16:40:29,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:40:30,005 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 16:40:30,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 16:40:30,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 67 states and 102 transitions. [2020-12-01 16:40:30,434 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 102 transitions. [2020-12-01 16:40:30,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-01 16:40:30,436 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 16:40:30,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:40:30,561 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 16:40:30,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 16:40:30,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 66 states and 98 transitions. [2020-12-01 16:40:30,644 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 98 transitions. [2020-12-01 16:40:30,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-01 16:40:30,648 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 16:40:30,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:40:30,776 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 16:40:30,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 16:40:30,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 68 states and 100 transitions. [2020-12-01 16:40:30,840 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 100 transitions. [2020-12-01 16:40:30,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-01 16:40:30,847 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 16:40:30,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:40:30,978 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 16:40:31,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 16:40:31,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 67 states and 96 transitions. [2020-12-01 16:40:31,044 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 96 transitions. [2020-12-01 16:40:31,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-01 16:40:31,054 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 16:40:31,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:40:31,142 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 16:40:31,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 16:40:31,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 69 states and 97 transitions. [2020-12-01 16:40:31,168 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 97 transitions. [2020-12-01 16:40:31,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-01 16:40:31,170 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 16:40:31,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:40:31,296 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 16:40:31,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 16:40:31,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 68 states and 94 transitions. [2020-12-01 16:40:31,358 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 94 transitions. [2020-12-01 16:40:31,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-01 16:40:31,359 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 16:40:31,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:40:32,153 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 16:40:35,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 16:40:35,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 79 states and 111 transitions. [2020-12-01 16:40:35,559 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 111 transitions. [2020-12-01 16:40:35,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-01 16:40:35,560 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 16:40:35,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:40:35,591 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-01 16:40:35,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 16:40:35,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 78 states and 109 transitions. [2020-12-01 16:40:35,607 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 109 transitions. [2020-12-01 16:40:35,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-01 16:40:35,609 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 16:40:35,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 16:40:35,690 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 16:40:35,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 16:40:35,751 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 16:40:35,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 16:40:35,874 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 16:40:35,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 16:40:35,972 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 16:40:36,307 WARN L483 CodeCheckObserver]: This program is UNSAFE, Check terminated with 12 iterations. [2020-12-01 16:40:36,389 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 01.12 04:40:36 ImpRootNode [2020-12-01 16:40:36,389 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2020-12-01 16:40:36,390 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 16:40:36,390 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 16:40:36,390 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 16:40:36,391 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 04:40:28" (3/4) ... [2020-12-01 16:40:36,394 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-01 16:40:36,512 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_e945f70a-5664-4687-b397-11d1ce567cfd/bin/ukojak/witness.graphml [2020-12-01 16:40:36,512 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 16:40:36,515 INFO L168 Benchmark]: Toolchain (without parser) took 10052.57 ms. Allocated memory was 109.1 MB in the beginning and 159.4 MB in the end (delta: 50.3 MB). Free memory was 77.8 MB in the beginning and 79.7 MB in the end (delta: -1.9 MB). Peak memory consumption was 46.8 MB. Max. memory is 16.1 GB. [2020-12-01 16:40:36,516 INFO L168 Benchmark]: CDTParser took 0.37 ms. Allocated memory is still 83.9 MB. Free memory was 41.2 MB in the beginning and 41.1 MB in the end (delta: 75.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 16:40:36,517 INFO L168 Benchmark]: CACSL2BoogieTranslator took 775.35 ms. Allocated memory is still 109.1 MB. Free memory was 77.2 MB in the beginning and 73.2 MB in the end (delta: 4.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-01 16:40:36,518 INFO L168 Benchmark]: Boogie Procedure Inliner took 70.54 ms. Allocated memory is still 109.1 MB. Free memory was 73.2 MB in the beginning and 70.5 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 16:40:36,520 INFO L168 Benchmark]: Boogie Preprocessor took 91.40 ms. Allocated memory is still 109.1 MB. Free memory was 70.5 MB in the beginning and 68.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 16:40:36,521 INFO L168 Benchmark]: RCFGBuilder took 1263.57 ms. Allocated memory is still 109.1 MB. Free memory was 68.4 MB in the beginning and 64.6 MB in the end (delta: 3.9 MB). Peak memory consumption was 36.4 MB. Max. memory is 16.1 GB. [2020-12-01 16:40:36,522 INFO L168 Benchmark]: CodeCheck took 7716.13 ms. Allocated memory was 109.1 MB in the beginning and 159.4 MB in the end (delta: 50.3 MB). Free memory was 64.6 MB in the beginning and 82.8 MB in the end (delta: -18.3 MB). Peak memory consumption was 31.7 MB. Max. memory is 16.1 GB. [2020-12-01 16:40:36,523 INFO L168 Benchmark]: Witness Printer took 122.31 ms. Allocated memory is still 159.4 MB. Free memory was 82.8 MB in the beginning and 79.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 16:40:36,529 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, 79 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 7.5s, OverallIterations: 12, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 26926 SDtfs, 10648 SDslu, 9352 SDs, 0 SdLazy, 30078 SolverSat, 11750 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1548 GetRequests, 1469 SyntacticMatches, 1 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1693 ImplicationChecksByTransitivity, 4.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 209 NumberOfCodeBlocks, 209 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 173 ConstructedInterpolants, 0 QuantifiedInterpolants, 20301 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 1/1 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: [L1003] SLL* list = malloc(sizeof(SLL)); [L1004] list->next = ((void*)0) [L1005] list->prev = ((void*)0) [L1006] COND FALSE !(!(list != ((void*)0))) [L1006] COND FALSE !(__VERIFIER_nondet_int()) [L1006] list->inner = malloc(sizeof(SLL)) [L1006] EXPR list->inner [L1006] list->inner->next = ((void*)0) [L1006] EXPR list->inner [L1006] list->inner->inner = ((void*)0) [L1006] EXPR list->inner [L1006] EXPR list->inner != ((void*)0) || list->inner == ((void*)0) [L1006] COND FALSE !(!(list->inner != ((void*)0) || list->inner == ((void*)0))) [L1008] SLL* end = list; [L1011] COND FALSE !(__VERIFIER_nondet_int()) [L1022] end = ((void*)0) [L1023] end = list [L1026] COND FALSE !(!(((void*)0) != end)) [L1028] COND TRUE ((void*)0) != end [L1030] int len = 0; [L1031] EXPR end->inner [L1031] SLL* inner = end->inner; [L1032] COND TRUE ((void*)0) != inner [L1034] COND TRUE len == 0 [L1035] len = 1 [L1038] COND FALSE !(!(((void*)0) != inner)) [L1039] EXPR inner->inner [L1039] COND FALSE !(!(((void*)0) == inner->inner)) [L1040] EXPR inner->next [L1040] COND TRUE !(((void*)0) != inner->next) [L1040] CALL reach_error() [L992] COND FALSE !(0) [L992] __assert_fail ("0", "dll-01-1.c", 12, __extension__ __PRETTY_FUNCTION__) * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37 ms. Allocated memory is still 83.9 MB. Free memory was 41.2 MB in the beginning and 41.1 MB in the end (delta: 75.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 775.35 ms. Allocated memory is still 109.1 MB. Free memory was 77.2 MB in the beginning and 73.2 MB in the end (delta: 4.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 70.54 ms. Allocated memory is still 109.1 MB. Free memory was 73.2 MB in the beginning and 70.5 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 91.40 ms. Allocated memory is still 109.1 MB. Free memory was 70.5 MB in the beginning and 68.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1263.57 ms. Allocated memory is still 109.1 MB. Free memory was 68.4 MB in the beginning and 64.6 MB in the end (delta: 3.9 MB). Peak memory consumption was 36.4 MB. Max. memory is 16.1 GB. * CodeCheck took 7716.13 ms. Allocated memory was 109.1 MB in the beginning and 159.4 MB in the end (delta: 50.3 MB). Free memory was 64.6 MB in the beginning and 82.8 MB in the end (delta: -18.3 MB). Peak memory consumption was 31.7 MB. Max. memory is 16.1 GB. * Witness Printer took 122.31 ms. Allocated memory is still 159.4 MB. Free memory was 82.8 MB in the beginning and 79.7 MB in the end (delta: 3.1 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...