./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 a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_b7dbb07a-452e-46bb-9cb6-4dbd9433cf09/bin/ukojak/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_b7dbb07a-452e-46bb-9cb6-4dbd9433cf09/bin/ukojak/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_b7dbb07a-452e-46bb-9cb6-4dbd9433cf09/bin/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_b7dbb07a-452e-46bb-9cb6-4dbd9433cf09/bin/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/forester-heap/dll-01-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_b7dbb07a-452e-46bb-9cb6-4dbd9433cf09/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_b7dbb07a-452e-46bb-9cb6-4dbd9433cf09/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-a4ecdab [2020-11-29 19:16:05,626 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 19:16:05,648 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 19:16:05,719 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 19:16:05,720 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 19:16:05,721 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 19:16:05,723 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 19:16:05,727 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 19:16:05,729 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 19:16:05,731 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 19:16:05,732 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 19:16:05,734 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 19:16:05,735 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 19:16:05,737 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 19:16:05,738 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 19:16:05,740 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 19:16:05,742 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 19:16:05,743 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 19:16:05,746 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 19:16:05,749 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 19:16:05,752 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 19:16:05,754 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 19:16:05,756 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 19:16:05,757 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 19:16:05,762 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 19:16:05,762 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 19:16:05,763 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 19:16:05,764 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 19:16:05,765 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 19:16:05,766 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 19:16:05,767 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 19:16:05,768 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 19:16:05,770 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 19:16:05,771 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 19:16:05,772 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 19:16:05,773 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 19:16:05,774 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 19:16:05,774 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 19:16:05,774 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 19:16:05,775 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 19:16:05,776 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 19:16:05,777 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_b7dbb07a-452e-46bb-9cb6-4dbd9433cf09/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf [2020-11-29 19:16:05,807 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 19:16:05,807 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 19:16:05,808 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-29 19:16:05,808 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2020-11-29 19:16:05,809 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 19:16:05,810 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 19:16:05,810 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 19:16:05,810 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 19:16:05,810 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 19:16:05,811 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 19:16:05,811 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 19:16:05,811 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 19:16:05,811 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 19:16:05,812 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 19:16:05,812 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 19:16:05,812 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 19:16:05,812 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 19:16:05,813 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 19:16:05,813 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2020-11-29 19:16:05,813 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2020-11-29 19:16:05,814 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 19:16:05,814 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 19:16:05,814 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2020-11-29 19:16:05,814 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 19:16:05,815 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 19:16:05,815 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 19:16:05,815 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2020-11-29 19:16:05,815 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 19:16:05,816 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 19:16:05,816 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_b7dbb07a-452e-46bb-9cb6-4dbd9433cf09/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_b7dbb07a-452e-46bb-9cb6-4dbd9433cf09/bin/ukojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cdf63a831807312c569006a76efbe1414243703d [2020-11-29 19:16:06,094 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 19:16:06,136 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 19:16:06,139 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 19:16:06,142 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 19:16:06,144 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 19:16:06,149 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_b7dbb07a-452e-46bb-9cb6-4dbd9433cf09/bin/ukojak/../../sv-benchmarks/c/forester-heap/dll-01-1.i [2020-11-29 19:16:06,257 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b7dbb07a-452e-46bb-9cb6-4dbd9433cf09/bin/ukojak/data/86973c6c3/6652615bde184a2c8e55bae6f9c00d77/FLAG5efdc1ecd [2020-11-29 19:16:06,888 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 19:16:06,889 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_b7dbb07a-452e-46bb-9cb6-4dbd9433cf09/sv-benchmarks/c/forester-heap/dll-01-1.i [2020-11-29 19:16:06,916 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b7dbb07a-452e-46bb-9cb6-4dbd9433cf09/bin/ukojak/data/86973c6c3/6652615bde184a2c8e55bae6f9c00d77/FLAG5efdc1ecd [2020-11-29 19:16:07,137 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_b7dbb07a-452e-46bb-9cb6-4dbd9433cf09/bin/ukojak/data/86973c6c3/6652615bde184a2c8e55bae6f9c00d77 [2020-11-29 19:16:07,140 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 19:16:07,142 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 19:16:07,144 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 19:16:07,171 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 19:16:07,176 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 19:16:07,177 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:16:07" (1/1) ... [2020-11-29 19:16:07,180 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69ed25d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:16:07, skipping insertion in model container [2020-11-29 19:16:07,180 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:16:07" (1/1) ... [2020-11-29 19:16:07,189 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 19:16:07,239 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 19:16:07,627 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:16:07,640 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 19:16:07,757 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:16:07,821 INFO L208 MainTranslator]: Completed translation [2020-11-29 19:16:07,821 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:16:07 WrapperNode [2020-11-29 19:16:07,822 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 19:16:07,823 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 19:16:07,823 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 19:16:07,824 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 19:16:07,833 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:16:07" (1/1) ... [2020-11-29 19:16:07,852 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:16:07" (1/1) ... [2020-11-29 19:16:07,889 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 19:16:07,894 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 19:16:07,895 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 19:16:07,895 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 19:16:07,906 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:16:07" (1/1) ... [2020-11-29 19:16:07,907 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:16:07" (1/1) ... [2020-11-29 19:16:07,931 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:16:07" (1/1) ... [2020-11-29 19:16:07,932 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:16:07" (1/1) ... [2020-11-29 19:16:07,947 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:16:07" (1/1) ... [2020-11-29 19:16:07,969 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:16:07" (1/1) ... [2020-11-29 19:16:07,976 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:16:07" (1/1) ... [2020-11-29 19:16:07,980 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 19:16:07,981 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 19:16:07,982 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 19:16:07,982 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 19:16:07,983 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:16:07" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b7dbb07a-452e-46bb-9cb6-4dbd9433cf09/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 [2020-11-29 19:16:08,063 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-29 19:16:08,064 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-29 19:16:08,064 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-29 19:16:08,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-29 19:16:08,064 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 19:16:08,064 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-29 19:16:08,064 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 19:16:08,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 19:16:08,065 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 19:16:08,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 19:16:09,191 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 19:16:09,191 INFO L298 CfgBuilder]: Removed 34 assume(true) statements. [2020-11-29 19:16:09,194 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:16:09 BoogieIcfgContainer [2020-11-29 19:16:09,194 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 19:16:09,196 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2020-11-29 19:16:09,196 INFO L271 PluginConnector]: Initializing CodeCheck... [2020-11-29 19:16:09,209 INFO L275 PluginConnector]: CodeCheck initialized [2020-11-29 19:16:09,210 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:16:09" (1/1) ... [2020-11-29 19:16:09,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:16:09,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 19:16:09,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 79 states and 136 transitions. [2020-11-29 19:16:09,272 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 136 transitions. [2020-11-29 19:16:09,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-29 19:16:09,276 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 19:16:09,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:16:09,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:16:09,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 19:16:09,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 63 states and 103 transitions. [2020-11-29 19:16:09,500 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 103 transitions. [2020-11-29 19:16:09,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-29 19:16:09,501 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 19:16:09,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:16:09,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:16:09,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 19:16:09,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 62 states and 99 transitions. [2020-11-29 19:16:09,646 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 99 transitions. [2020-11-29 19:16:09,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-29 19:16:09,647 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 19:16:09,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:16:09,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:16:10,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 19:16:10,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 63 states and 97 transitions. [2020-11-29 19:16:10,501 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 97 transitions. [2020-11-29 19:16:10,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-29 19:16:10,502 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 19:16:10,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:16:10,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:16:10,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 19:16:10,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 67 states and 102 transitions. [2020-11-29 19:16:10,942 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 102 transitions. [2020-11-29 19:16:10,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-29 19:16:10,943 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 19:16:10,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:16:11,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:16:11,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 19:16:11,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 66 states and 98 transitions. [2020-11-29 19:16:11,120 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 98 transitions. [2020-11-29 19:16:11,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-29 19:16:11,123 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 19:16:11,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:16:11,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:16:11,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 19:16:11,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 68 states and 100 transitions. [2020-11-29 19:16:11,277 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 100 transitions. [2020-11-29 19:16:11,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-29 19:16:11,279 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 19:16:11,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:16:11,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:16:11,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 19:16:11,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 67 states and 96 transitions. [2020-11-29 19:16:11,414 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 96 transitions. [2020-11-29 19:16:11,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-29 19:16:11,415 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 19:16:11,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:16:11,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:16:11,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 19:16:11,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 69 states and 97 transitions. [2020-11-29 19:16:11,507 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 97 transitions. [2020-11-29 19:16:11,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-29 19:16:11,508 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 19:16:11,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:16:11,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:16:11,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 19:16:11,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 68 states and 94 transitions. [2020-11-29 19:16:11,671 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 94 transitions. [2020-11-29 19:16:11,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-29 19:16:11,672 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 19:16:11,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:16:12,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:16:15,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 19:16:15,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 79 states and 111 transitions. [2020-11-29 19:16:15,807 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 111 transitions. [2020-11-29 19:16:15,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-29 19:16:15,808 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 19:16:15,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:16:15,836 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-29 19:16:15,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 19:16:15,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 78 states and 109 transitions. [2020-11-29 19:16:15,852 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 109 transitions. [2020-11-29 19:16:15,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-29 19:16:15,853 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 19:16:15,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:16:15,893 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:16:15,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:16:15,930 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:16:16,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:16:16,097 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:16:16,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:16:16,174 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:16:16,256 WARN L483 CodeCheckObserver]: This program is UNSAFE, Check terminated with 12 iterations. [2020-11-29 19:16:16,318 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 29.11 07:16:16 ImpRootNode [2020-11-29 19:16:16,318 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2020-11-29 19:16:16,319 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 19:16:16,319 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 19:16:16,319 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 19:16:16,320 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:16:09" (3/4) ... [2020-11-29 19:16:16,323 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-29 19:16:16,411 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_b7dbb07a-452e-46bb-9cb6-4dbd9433cf09/bin/ukojak/witness.graphml [2020-11-29 19:16:16,411 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 19:16:16,414 INFO L168 Benchmark]: Toolchain (without parser) took 9270.04 ms. Allocated memory was 88.1 MB in the beginning and 142.6 MB in the end (delta: 54.5 MB). Free memory was 62.7 MB in the beginning and 71.7 MB in the end (delta: -9.0 MB). Peak memory consumption was 46.3 MB. Max. memory is 16.1 GB. [2020-11-29 19:16:16,415 INFO L168 Benchmark]: CDTParser took 0.42 ms. Allocated memory is still 88.1 MB. Free memory is still 51.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:16:16,416 INFO L168 Benchmark]: CACSL2BoogieTranslator took 678.22 ms. Allocated memory is still 88.1 MB. Free memory was 62.5 MB in the beginning and 53.9 MB in the end (delta: 8.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-29 19:16:16,431 INFO L168 Benchmark]: Boogie Procedure Inliner took 66.55 ms. Allocated memory is still 88.1 MB. Free memory was 53.9 MB in the beginning and 51.6 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:16:16,432 INFO L168 Benchmark]: Boogie Preprocessor took 86.35 ms. Allocated memory is still 88.1 MB. Free memory was 51.6 MB in the beginning and 49.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:16:16,433 INFO L168 Benchmark]: RCFGBuilder took 1212.80 ms. Allocated memory was 88.1 MB in the beginning and 117.4 MB in the end (delta: 29.4 MB). Free memory was 49.2 MB in the beginning and 56.9 MB in the end (delta: -7.6 MB). Peak memory consumption was 23.2 MB. Max. memory is 16.1 GB. [2020-11-29 19:16:16,435 INFO L168 Benchmark]: CodeCheck took 7122.35 ms. Allocated memory was 117.4 MB in the beginning and 142.6 MB in the end (delta: 25.2 MB). Free memory was 56.9 MB in the beginning and 73.8 MB in the end (delta: -16.9 MB). Peak memory consumption was 9.0 MB. Max. memory is 16.1 GB. [2020-11-29 19:16:16,436 INFO L168 Benchmark]: Witness Printer took 92.53 ms. Allocated memory is still 142.6 MB. Free memory was 73.8 MB in the beginning and 71.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:16:16,443 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: 7.0s, 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, 1471 SyntacticMatches, 1 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1605 ImplicationChecksByTransitivity, 4.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 209 NumberOfCodeBlocks, 209 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 173 ConstructedInterpolants, 0 QuantifiedInterpolants, 19020 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 0.42 ms. Allocated memory is still 88.1 MB. Free memory is still 51.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 678.22 ms. Allocated memory is still 88.1 MB. Free memory was 62.5 MB in the beginning and 53.9 MB in the end (delta: 8.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 66.55 ms. Allocated memory is still 88.1 MB. Free memory was 53.9 MB in the beginning and 51.6 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 86.35 ms. Allocated memory is still 88.1 MB. Free memory was 51.6 MB in the beginning and 49.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1212.80 ms. Allocated memory was 88.1 MB in the beginning and 117.4 MB in the end (delta: 29.4 MB). Free memory was 49.2 MB in the beginning and 56.9 MB in the end (delta: -7.6 MB). Peak memory consumption was 23.2 MB. Max. memory is 16.1 GB. * CodeCheck took 7122.35 ms. Allocated memory was 117.4 MB in the beginning and 142.6 MB in the end (delta: 25.2 MB). Free memory was 56.9 MB in the beginning and 73.8 MB in the end (delta: -16.9 MB). Peak memory consumption was 9.0 MB. Max. memory is 16.1 GB. * Witness Printer took 92.53 ms. Allocated memory is still 142.6 MB. Free memory was 73.8 MB in the beginning and 71.7 MB in the end (delta: 2.1 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...