./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/forester-heap/sll-01-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_871b7e95-e123-4984-8750-c94fc8ff014c/bin/ukojak/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_871b7e95-e123-4984-8750-c94fc8ff014c/bin/ukojak/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_871b7e95-e123-4984-8750-c94fc8ff014c/bin/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_871b7e95-e123-4984-8750-c94fc8ff014c/bin/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/forester-heap/sll-01-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_871b7e95-e123-4984-8750-c94fc8ff014c/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_871b7e95-e123-4984-8750-c94fc8ff014c/bin/ukojak --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Kojak --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 31de2fb67e84e52bb7705ac8720e6b139fef2d91 ..................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-01 13:51:07,668 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-01 13:51:07,669 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-01 13:51:07,677 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-01 13:51:07,677 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-01 13:51:07,677 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-01 13:51:07,678 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-01 13:51:07,680 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-01 13:51:07,681 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-01 13:51:07,681 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-01 13:51:07,682 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-01 13:51:07,683 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-01 13:51:07,683 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-01 13:51:07,684 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-01 13:51:07,684 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-01 13:51:07,685 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-01 13:51:07,685 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-01 13:51:07,686 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-01 13:51:07,687 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-01 13:51:07,689 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-01 13:51:07,690 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-01 13:51:07,690 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-01 13:51:07,691 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-01 13:51:07,692 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-01 13:51:07,693 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-01 13:51:07,693 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-01 13:51:07,693 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-01 13:51:07,694 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-01 13:51:07,694 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-01 13:51:07,695 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-01 13:51:07,695 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-01 13:51:07,695 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-01 13:51:07,696 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-01 13:51:07,696 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-01 13:51:07,697 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-01 13:51:07,697 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-01 13:51:07,697 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-01 13:51:07,697 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-01 13:51:07,698 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-01 13:51:07,698 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-01 13:51:07,698 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-01 13:51:07,699 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_871b7e95-e123-4984-8750-c94fc8ff014c/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf [2019-12-01 13:51:07,708 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-01 13:51:07,708 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-01 13:51:07,709 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-01 13:51:07,709 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2019-12-01 13:51:07,709 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-01 13:51:07,710 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-01 13:51:07,710 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-01 13:51:07,710 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-01 13:51:07,710 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-01 13:51:07,710 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-01 13:51:07,710 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-01 13:51:07,710 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-01 13:51:07,711 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-01 13:51:07,711 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-01 13:51:07,711 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-01 13:51:07,711 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-01 13:51:07,711 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-01 13:51:07,711 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-01 13:51:07,711 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2019-12-01 13:51:07,711 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2019-12-01 13:51:07,712 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-01 13:51:07,712 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-01 13:51:07,712 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2019-12-01 13:51:07,712 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-01 13:51:07,712 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-01 13:51:07,712 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-01 13:51:07,712 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2019-12-01 13:51:07,712 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-01 13:51:07,713 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-01 13:51:07,713 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_871b7e95-e123-4984-8750-c94fc8ff014c/bin/ukojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 31de2fb67e84e52bb7705ac8720e6b139fef2d91 [2019-12-01 13:51:07,810 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-01 13:51:07,817 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-01 13:51:07,820 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-01 13:51:07,821 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-01 13:51:07,821 INFO L275 PluginConnector]: CDTParser initialized [2019-12-01 13:51:07,822 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_871b7e95-e123-4984-8750-c94fc8ff014c/bin/ukojak/../../sv-benchmarks/c/forester-heap/sll-01-2.i [2019-12-01 13:51:07,869 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_871b7e95-e123-4984-8750-c94fc8ff014c/bin/ukojak/data/d0645e434/a7a18c7e30024bba99b7d1870fa69371/FLAG5cfbf9bad [2019-12-01 13:51:08,236 INFO L306 CDTParser]: Found 1 translation units. [2019-12-01 13:51:08,236 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_871b7e95-e123-4984-8750-c94fc8ff014c/sv-benchmarks/c/forester-heap/sll-01-2.i [2019-12-01 13:51:08,245 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_871b7e95-e123-4984-8750-c94fc8ff014c/bin/ukojak/data/d0645e434/a7a18c7e30024bba99b7d1870fa69371/FLAG5cfbf9bad [2019-12-01 13:51:08,640 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_871b7e95-e123-4984-8750-c94fc8ff014c/bin/ukojak/data/d0645e434/a7a18c7e30024bba99b7d1870fa69371 [2019-12-01 13:51:08,642 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-01 13:51:08,643 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-01 13:51:08,644 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-01 13:51:08,644 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-01 13:51:08,646 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-01 13:51:08,647 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 01:51:08" (1/1) ... [2019-12-01 13:51:08,649 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48ac8ce1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:51:08, skipping insertion in model container [2019-12-01 13:51:08,649 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 01:51:08" (1/1) ... [2019-12-01 13:51:08,654 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-01 13:51:08,680 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-01 13:51:08,890 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-01 13:51:08,895 INFO L203 MainTranslator]: Completed pre-run [2019-12-01 13:51:08,927 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-01 13:51:08,956 INFO L208 MainTranslator]: Completed translation [2019-12-01 13:51:08,956 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:51:08 WrapperNode [2019-12-01 13:51:08,956 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-01 13:51:08,957 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-01 13:51:08,957 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-01 13:51:08,957 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-01 13:51:08,962 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:51:08" (1/1) ... [2019-12-01 13:51:08,973 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:51:08" (1/1) ... [2019-12-01 13:51:08,991 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-01 13:51:08,991 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-01 13:51:08,991 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-01 13:51:08,991 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-01 13:51:08,997 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:51:08" (1/1) ... [2019-12-01 13:51:08,997 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:51:08" (1/1) ... [2019-12-01 13:51:09,000 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:51:08" (1/1) ... [2019-12-01 13:51:09,000 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:51:08" (1/1) ... [2019-12-01 13:51:09,006 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:51:08" (1/1) ... [2019-12-01 13:51:09,011 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:51:08" (1/1) ... [2019-12-01 13:51:09,013 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:51:08" (1/1) ... [2019-12-01 13:51:09,015 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-01 13:51:09,016 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-01 13:51:09,016 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-01 13:51:09,016 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-01 13:51:09,017 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:51:08" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_871b7e95-e123-4984-8750-c94fc8ff014c/bin/ukojak/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2019-12-01 13:51:09,057 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-12-01 13:51:09,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-12-01 13:51:09,057 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-12-01 13:51:09,057 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-01 13:51:09,057 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-01 13:51:09,057 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-01 13:51:09,431 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-01 13:51:09,431 INFO L287 CfgBuilder]: Removed 34 assume(true) statements. [2019-12-01 13:51:09,432 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 01:51:09 BoogieIcfgContainer [2019-12-01 13:51:09,432 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-01 13:51:09,433 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2019-12-01 13:51:09,433 INFO L271 PluginConnector]: Initializing CodeCheck... [2019-12-01 13:51:09,441 INFO L275 PluginConnector]: CodeCheck initialized [2019-12-01 13:51:09,441 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 01:51:09" (1/1) ... [2019-12-01 13:51:09,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-01 13:51:09,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-12-01 13:51:09,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 74 states and 118 transitions. [2019-12-01 13:51:09,473 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 118 transitions. [2019-12-01 13:51:09,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-12-01 13:51:09,475 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-12-01 13:51:09,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-01 13:51:09,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-01 13:51:09,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-12-01 13:51:09,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 72 states and 113 transitions. [2019-12-01 13:51:09,586 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 113 transitions. [2019-12-01 13:51:09,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-12-01 13:51:09,586 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-12-01 13:51:09,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-01 13:51:09,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-01 13:51:09,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-12-01 13:51:09,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 70 states and 108 transitions. [2019-12-01 13:51:09,645 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 108 transitions. [2019-12-01 13:51:09,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-12-01 13:51:09,646 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-12-01 13:51:09,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-01 13:51:09,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-01 13:51:09,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-12-01 13:51:09,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 70 states and 103 transitions. [2019-12-01 13:51:09,684 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 103 transitions. [2019-12-01 13:51:09,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-12-01 13:51:09,685 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-12-01 13:51:09,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-01 13:51:09,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-01 13:51:09,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-12-01 13:51:09,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 68 states and 98 transitions. [2019-12-01 13:51:09,744 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 98 transitions. [2019-12-01 13:51:09,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-12-01 13:51:09,744 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-12-01 13:51:09,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-01 13:51:09,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-01 13:51:09,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-12-01 13:51:09,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 72 states and 104 transitions. [2019-12-01 13:51:09,901 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 104 transitions. [2019-12-01 13:51:09,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-12-01 13:51:09,901 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-12-01 13:51:09,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-01 13:51:09,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-01 13:51:09,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-12-01 13:51:09,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 70 states and 99 transitions. [2019-12-01 13:51:09,928 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 99 transitions. [2019-12-01 13:51:09,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-12-01 13:51:09,928 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-12-01 13:51:09,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-01 13:51:09,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-01 13:51:09,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-12-01 13:51:09,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 72 states and 100 transitions. [2019-12-01 13:51:09,986 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 100 transitions. [2019-12-01 13:51:09,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-12-01 13:51:09,986 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-12-01 13:51:09,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-01 13:51:10,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-01 13:51:10,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-12-01 13:51:10,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 70 states and 95 transitions. [2019-12-01 13:51:10,056 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 95 transitions. [2019-12-01 13:51:10,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-12-01 13:51:10,057 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-12-01 13:51:10,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-01 13:51:10,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-01 13:51:10,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-12-01 13:51:10,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 72 states and 95 transitions. [2019-12-01 13:51:10,092 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 95 transitions. [2019-12-01 13:51:10,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-12-01 13:51:10,093 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-12-01 13:51:10,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-01 13:51:10,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-01 13:51:10,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-12-01 13:51:10,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 70 states and 91 transitions. [2019-12-01 13:51:10,157 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 91 transitions. [2019-12-01 13:51:10,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-12-01 13:51:10,157 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-12-01 13:51:10,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-01 13:51:10,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-01 13:51:12,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-12-01 13:51:12,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 81 states and 106 transitions. [2019-12-01 13:51:12,017 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 106 transitions. [2019-12-01 13:51:12,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-12-01 13:51:12,017 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-12-01 13:51:12,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-01 13:51:12,069 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-01 13:51:12,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-12-01 13:51:12,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 79 states and 104 transitions. [2019-12-01 13:51:12,110 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 104 transitions. [2019-12-01 13:51:12,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-12-01 13:51:12,111 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-12-01 13:51:12,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-01 13:51:12,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-01 13:51:13,082 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 33 [2019-12-01 13:51:13,832 WARN L192 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2019-12-01 13:51:15,448 WARN L192 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 27 [2019-12-01 13:51:15,971 WARN L192 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 26 [2019-12-01 13:51:18,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-12-01 13:51:18,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 93 states and 123 transitions. [2019-12-01 13:51:18,488 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 123 transitions. [2019-12-01 13:51:18,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-12-01 13:51:18,490 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-12-01 13:51:18,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-01 13:51:18,505 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-01 13:51:18,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-12-01 13:51:18,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 86 states and 114 transitions. [2019-12-01 13:51:18,856 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 114 transitions. [2019-12-01 13:51:18,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-12-01 13:51:18,857 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-12-01 13:51:18,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-01 13:51:19,127 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-01 13:51:19,885 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2019-12-01 13:51:20,479 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2019-12-01 13:51:21,069 WARN L192 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 39 [2019-12-01 13:51:21,529 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2019-12-01 13:51:22,191 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2019-12-01 13:51:24,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-12-01 13:51:24,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 97 states and 133 transitions. [2019-12-01 13:51:24,851 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 133 transitions. [2019-12-01 13:51:24,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-12-01 13:51:24,851 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-12-01 13:51:24,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-01 13:51:25,442 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-01 13:51:26,501 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2019-12-01 13:51:29,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-12-01 13:51:29,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 105 states and 144 transitions. [2019-12-01 13:51:29,592 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 144 transitions. [2019-12-01 13:51:29,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-12-01 13:51:29,593 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-12-01 13:51:29,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-01 13:51:29,780 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-01 13:51:34,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-12-01 13:51:34,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 116 states and 159 transitions. [2019-12-01 13:51:34,820 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 159 transitions. [2019-12-01 13:51:34,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-12-01 13:51:34,821 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-12-01 13:51:34,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-01 13:51:35,211 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-01 13:51:40,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-12-01 13:51:40,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 126 states and 180 transitions. [2019-12-01 13:51:40,401 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 180 transitions. [2019-12-01 13:51:40,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-12-01 13:51:40,402 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-12-01 13:51:40,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-01 13:51:40,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-01 13:51:40,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-01 13:51:40,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-01 13:51:40,519 WARN L483 CodeCheckObserver]: This program is UNSAFE, Check terminated with 19 iterations. [2019-12-01 13:51:40,550 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 01.12 01:51:40 ImpRootNode [2019-12-01 13:51:40,550 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2019-12-01 13:51:40,550 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-01 13:51:40,550 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-01 13:51:40,550 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-01 13:51:40,551 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 01:51:09" (3/4) ... [2019-12-01 13:51:40,552 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-12-01 13:51:40,598 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_871b7e95-e123-4984-8750-c94fc8ff014c/bin/ukojak/witness.graphml [2019-12-01 13:51:40,598 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-01 13:51:40,599 INFO L168 Benchmark]: Toolchain (without parser) took 31956.56 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 300.4 MB). Free memory was 937.1 MB in the beginning and 985.3 MB in the end (delta: -48.3 MB). Peak memory consumption was 252.2 MB. Max. memory is 11.5 GB. [2019-12-01 13:51:40,600 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 958.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-01 13:51:40,600 INFO L168 Benchmark]: CACSL2BoogieTranslator took 313.18 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 93.8 MB). Free memory was 937.1 MB in the beginning and 1.1 GB in the end (delta: -139.7 MB). Peak memory consumption was 18.0 MB. Max. memory is 11.5 GB. [2019-12-01 13:51:40,601 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.87 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-12-01 13:51:40,601 INFO L168 Benchmark]: Boogie Preprocessor took 24.65 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-01 13:51:40,601 INFO L168 Benchmark]: RCFGBuilder took 416.72 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 54.1 MB). Peak memory consumption was 54.1 MB. Max. memory is 11.5 GB. [2019-12-01 13:51:40,602 INFO L168 Benchmark]: CodeCheck took 31117.19 ms. Allocated memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: 206.6 MB). Free memory was 1.0 GB in the beginning and 988.6 MB in the end (delta: 28.7 MB). Peak memory consumption was 235.3 MB. Max. memory is 11.5 GB. [2019-12-01 13:51:40,602 INFO L168 Benchmark]: Witness Printer took 47.95 ms. Allocated memory is still 1.3 GB. Free memory was 988.6 MB in the beginning and 985.3 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 11.5 GB. [2019-12-01 13:51:40,605 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck: - StatisticsResult: Ultimate CodeCheck benchmark data CFG has 1 procedures, 74 locations, 13 error locations. Result: UNSAFE, OverallTime: 31.0s, OverallIterations: 19, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 1510672 SDtfs, 332060 SDslu, 199104 SDs, 0 SdLazy, 1670060 SolverSat, 851600 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2472 GetRequests, 2223 SyntacticMatches, 15 SemanticMatches, 234 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20805 ImplicationChecksByTransitivity, 29.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 357 NumberOfCodeBlocks, 357 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 309 ConstructedInterpolants, 0 QuantifiedInterpolants, 60431 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 18 InterpolantComputations, 15 PerfectInterpolantSequences, 6/10 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: 1025]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L991] SLL* list = malloc(sizeof(SLL)); [L992] list->next = ((void*)0) [L993] COND FALSE !(!(list != ((void*)0))) [L993] COND FALSE !(__VERIFIER_nondet_int()) [L993] list->inner = malloc(sizeof(SLL)) [L993] EXPR list->inner [L993] list->inner->next = ((void*)0) [L993] EXPR list->inner [L993] list->inner->inner = ((void*)0) [L993] EXPR list->inner [L993] EXPR list->inner != ((void*)0) || list->inner == ((void*)0) [L993] COND FALSE !(!(list->inner != ((void*)0) || list->inner == ((void*)0))) [L995] SLL* end = list; [L998] COND FALSE !(__VERIFIER_nondet_int()) [L1008] end = ((void*)0) [L1009] end = list [L1012] COND FALSE !(!(((void*)0) != end)) [L1014] COND TRUE ((void*)0) != end [L1016] int len = 0; [L1017] EXPR end->inner [L1017] SLL* inner = end->inner; [L1018] COND TRUE ((void*)0) != inner [L1020] COND TRUE len == 0 [L1021] len = 1 [L1024] COND FALSE !(!(((void*)0) != inner)) [L1025] EXPR inner->inner [L1025] COND FALSE !(!(((void*)0) == inner->inner)) [L1026] EXPR inner->next [L1026] COND FALSE !(!(((void*)0) == inner->next)) [L1027] EXPR inner->inner [L1027] inner = inner->inner [L1028] COND TRUE len == 1 [L1029] EXPR inner->inner [L1029] inner = inner->inner [L1018] COND TRUE ((void*)0) != inner [L1020] COND FALSE !(len == 0) [L1023] len = 2 [L1024] COND FALSE !(!(((void*)0) != inner)) [L1025] EXPR inner->inner [L1025] COND TRUE !(((void*)0) == inner->inner) [L1025] __VERIFIER_error() * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 958.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 313.18 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 93.8 MB). Free memory was 937.1 MB in the beginning and 1.1 GB in the end (delta: -139.7 MB). Peak memory consumption was 18.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 33.87 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 24.65 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 416.72 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 54.1 MB). Peak memory consumption was 54.1 MB. Max. memory is 11.5 GB. * CodeCheck took 31117.19 ms. Allocated memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: 206.6 MB). Free memory was 1.0 GB in the beginning and 988.6 MB in the end (delta: 28.7 MB). Peak memory consumption was 235.3 MB. Max. memory is 11.5 GB. * Witness Printer took 47.95 ms. Allocated memory is still 1.3 GB. Free memory was 988.6 MB in the beginning and 985.3 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 11.5 GB. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...