./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/forester-heap/sll-token-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 678e0110 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_ddb8430b-e8ba-41f4-8770-6b3b7d5c800d/bin/ukojak/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_ddb8430b-e8ba-41f4-8770-6b3b7d5c800d/bin/ukojak/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_ddb8430b-e8ba-41f4-8770-6b3b7d5c800d/bin/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_ddb8430b-e8ba-41f4-8770-6b3b7d5c800d/bin/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/forester-heap/sll-token-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_ddb8430b-e8ba-41f4-8770-6b3b7d5c800d/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_ddb8430b-e8ba-41f4-8770-6b3b7d5c800d/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 60dcf5da7f0124de96473d8010137f60c5cb2803 .......................................................................................................................................................................................................................................................... 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 0.1.24-678e011 [2019-11-20 05:16:44,592 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 05:16:44,595 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 05:16:44,609 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 05:16:44,609 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 05:16:44,611 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 05:16:44,612 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 05:16:44,621 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 05:16:44,626 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 05:16:44,630 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 05:16:44,632 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 05:16:44,633 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 05:16:44,633 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 05:16:44,634 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 05:16:44,635 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 05:16:44,636 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 05:16:44,637 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 05:16:44,637 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 05:16:44,639 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 05:16:44,641 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 05:16:44,642 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 05:16:44,643 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 05:16:44,644 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 05:16:44,645 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 05:16:44,647 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 05:16:44,647 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 05:16:44,648 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 05:16:44,648 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 05:16:44,649 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 05:16:44,650 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 05:16:44,650 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 05:16:44,651 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 05:16:44,652 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 05:16:44,654 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 05:16:44,655 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 05:16:44,657 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 05:16:44,658 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 05:16:44,658 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 05:16:44,658 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 05:16:44,659 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 05:16:44,662 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 05:16:44,662 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_ddb8430b-e8ba-41f4-8770-6b3b7d5c800d/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf [2019-11-20 05:16:44,674 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 05:16:44,675 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 05:16:44,675 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-20 05:16:44,675 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2019-11-20 05:16:44,676 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 05:16:44,676 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 05:16:44,676 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 05:16:44,677 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 05:16:44,677 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 05:16:44,677 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 05:16:44,677 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 05:16:44,677 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-20 05:16:44,677 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 05:16:44,678 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-20 05:16:44,678 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 05:16:44,678 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 05:16:44,678 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 05:16:44,678 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-20 05:16:44,679 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2019-11-20 05:16:44,679 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2019-11-20 05:16:44,679 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 05:16:44,679 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 05:16:44,679 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2019-11-20 05:16:44,680 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 05:16:44,680 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 05:16:44,680 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-20 05:16:44,680 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2019-11-20 05:16:44,680 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-20 05:16:44,680 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-20 05:16:44,681 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_ddb8430b-e8ba-41f4-8770-6b3b7d5c800d/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 -> 60dcf5da7f0124de96473d8010137f60c5cb2803 [2019-11-20 05:16:44,850 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 05:16:44,860 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 05:16:44,863 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 05:16:44,864 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 05:16:44,865 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 05:16:44,865 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_ddb8430b-e8ba-41f4-8770-6b3b7d5c800d/bin/ukojak/../../sv-benchmarks/c/forester-heap/sll-token-1.i [2019-11-20 05:16:44,914 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ddb8430b-e8ba-41f4-8770-6b3b7d5c800d/bin/ukojak/data/97021aac2/0050fc3b9a344a43ba5bf0963e45b55e/FLAG171bc07dc [2019-11-20 05:16:45,408 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 05:16:45,408 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_ddb8430b-e8ba-41f4-8770-6b3b7d5c800d/sv-benchmarks/c/forester-heap/sll-token-1.i [2019-11-20 05:16:45,422 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ddb8430b-e8ba-41f4-8770-6b3b7d5c800d/bin/ukojak/data/97021aac2/0050fc3b9a344a43ba5bf0963e45b55e/FLAG171bc07dc [2019-11-20 05:16:45,885 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_ddb8430b-e8ba-41f4-8770-6b3b7d5c800d/bin/ukojak/data/97021aac2/0050fc3b9a344a43ba5bf0963e45b55e [2019-11-20 05:16:45,887 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 05:16:45,888 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 05:16:45,889 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 05:16:45,889 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 05:16:45,893 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 05:16:45,899 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:16:45" (1/1) ... [2019-11-20 05:16:45,901 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32390c5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:16:45, skipping insertion in model container [2019-11-20 05:16:45,901 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:16:45" (1/1) ... [2019-11-20 05:16:45,906 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 05:16:45,945 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 05:16:46,252 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 05:16:46,264 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 05:16:46,314 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 05:16:46,366 INFO L192 MainTranslator]: Completed translation [2019-11-20 05:16:46,367 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:16:46 WrapperNode [2019-11-20 05:16:46,367 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 05:16:46,368 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 05:16:46,368 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 05:16:46,368 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 05:16:46,376 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:16:46" (1/1) ... [2019-11-20 05:16:46,390 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:16:46" (1/1) ... [2019-11-20 05:16:46,411 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 05:16:46,411 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 05:16:46,411 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 05:16:46,412 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 05:16:46,423 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:16:46" (1/1) ... [2019-11-20 05:16:46,423 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:16:46" (1/1) ... [2019-11-20 05:16:46,427 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:16:46" (1/1) ... [2019-11-20 05:16:46,427 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:16:46" (1/1) ... [2019-11-20 05:16:46,434 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:16:46" (1/1) ... [2019-11-20 05:16:46,444 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:16:46" (1/1) ... [2019-11-20 05:16:46,451 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:16:46" (1/1) ... [2019-11-20 05:16:46,462 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 05:16:46,462 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 05:16:46,462 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 05:16:46,462 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 05:16:46,463 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:16:46" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ddb8430b-e8ba-41f4-8770-6b3b7d5c800d/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 [2019-11-20 05:16:46,512 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-20 05:16:46,512 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-20 05:16:46,513 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-20 05:16:46,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-20 05:16:46,513 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-20 05:16:46,513 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-20 05:16:46,513 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 05:16:46,513 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 05:16:46,937 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 05:16:46,937 INFO L285 CfgBuilder]: Removed 19 assume(true) statements. [2019-11-20 05:16:46,938 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:16:46 BoogieIcfgContainer [2019-11-20 05:16:46,938 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 05:16:46,939 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2019-11-20 05:16:46,939 INFO L271 PluginConnector]: Initializing CodeCheck... [2019-11-20 05:16:46,948 INFO L275 PluginConnector]: CodeCheck initialized [2019-11-20 05:16:46,949 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:16:46" (1/1) ... [2019-11-20 05:16:46,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:16:46,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-11-20 05:16:46,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 41 states and 64 transitions. [2019-11-20 05:16:46,991 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 64 transitions. [2019-11-20 05:16:46,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-20 05:16:46,993 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-11-20 05:16:47,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:16:47,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:16:47,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-11-20 05:16:47,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 41 states and 59 transitions. [2019-11-20 05:16:47,116 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 59 transitions. [2019-11-20 05:16:47,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-20 05:16:47,116 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-11-20 05:16:47,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:16:47,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:16:47,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-11-20 05:16:47,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 39 states and 55 transitions. [2019-11-20 05:16:47,200 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 55 transitions. [2019-11-20 05:16:47,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-20 05:16:47,201 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-11-20 05:16:47,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:16:47,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:16:47,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-11-20 05:16:47,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 43 states and 61 transitions. [2019-11-20 05:16:47,305 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 61 transitions. [2019-11-20 05:16:47,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-20 05:16:47,305 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-11-20 05:16:47,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:16:47,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:16:47,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-11-20 05:16:47,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 43 states and 57 transitions. [2019-11-20 05:16:47,340 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 57 transitions. [2019-11-20 05:16:47,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-20 05:16:47,341 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-11-20 05:16:47,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:16:47,379 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-20 05:16:47,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-11-20 05:16:47,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 37 states and 49 transitions. [2019-11-20 05:16:47,452 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 49 transitions. [2019-11-20 05:16:47,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-20 05:16:47,453 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-11-20 05:16:47,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 05:16:47,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 05:16:47,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 05:16:47,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 05:16:47,613 WARN L483 CodeCheckObserver]: This program is UNSAFE, Check terminated with 6 iterations. [2019-11-20 05:16:47,639 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 20.11 05:16:47 ImpRootNode [2019-11-20 05:16:47,639 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2019-11-20 05:16:47,639 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 05:16:47,639 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 05:16:47,640 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 05:16:47,640 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:16:46" (3/4) ... [2019-11-20 05:16:47,643 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-20 05:16:47,691 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_ddb8430b-e8ba-41f4-8770-6b3b7d5c800d/bin/ukojak/witness.graphml [2019-11-20 05:16:47,694 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 05:16:47,696 INFO L168 Benchmark]: Toolchain (without parser) took 1807.59 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.2 MB). Free memory was 940.7 MB in the beginning and 1.0 GB in the end (delta: -93.5 MB). Peak memory consumption was 39.6 MB. Max. memory is 11.5 GB. [2019-11-20 05:16:47,697 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 05:16:47,698 INFO L168 Benchmark]: CACSL2BoogieTranslator took 478.53 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.2 MB). Free memory was 940.7 MB in the beginning and 1.1 GB in the end (delta: -175.0 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. [2019-11-20 05:16:47,700 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.11 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 05:16:47,701 INFO L168 Benchmark]: Boogie Preprocessor took 50.49 ms. Allocated memory is still 1.2 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. [2019-11-20 05:16:47,702 INFO L168 Benchmark]: RCFGBuilder took 476.33 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 27.8 MB). Peak memory consumption was 27.8 MB. Max. memory is 11.5 GB. [2019-11-20 05:16:47,703 INFO L168 Benchmark]: CodeCheck took 700.26 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 48.3 MB). Peak memory consumption was 48.3 MB. Max. memory is 11.5 GB. [2019-11-20 05:16:47,703 INFO L168 Benchmark]: Witness Printer took 55.25 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 05:16:47,708 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, 41 locations, 6 error locations. Result: UNSAFE, OverallTime: 0.6s, OverallIterations: 6, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 224 SDtfs, 44 SDslu, 52 SDs, 0 SdLazy, 160 SolverSat, 64 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 246 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 31 ConstructedInterpolants, 0 QuantifiedInterpolants, 507 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 2/2 InterpolantCoveringCapability, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - CounterExampleResult [Line: 1020]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L992] SLL* head = malloc(sizeof(SLL)); [L993] head->next = ((void*)0) [L994] head->data = 0 [L996] SLL* x = head; [L999] COND FALSE !(__VERIFIER_nondet_int()) [L1007] x->data = 1 [L1008] x->next = malloc(sizeof(SLL)) [L1009] EXPR x->next [L1009] x->next->data = 2 [L1011] x = head [L1013] COND FALSE !(!(((void*)0) != x)) [L1015] EXPR x->data [L1015] COND FALSE !(1 != x->data) [L1020] EXPR x->data [L1020] COND TRUE !(2 == x->data) [L1020] __VERIFIER_error() * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 478.53 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.2 MB). Free memory was 940.7 MB in the beginning and 1.1 GB in the end (delta: -175.0 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 43.11 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 50.49 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 476.33 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 27.8 MB). Peak memory consumption was 27.8 MB. Max. memory is 11.5 GB. * CodeCheck took 700.26 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 48.3 MB). Peak memory consumption was 48.3 MB. Max. memory is 11.5 GB. * Witness Printer took 55.25 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...