./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/list-ext-properties/list-ext.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_b7931d4d-be4b-4fc9-8185-7be3b40c94b3/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_b7931d4d-be4b-4fc9-8185-7be3b40c94b3/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_b7931d4d-be4b-4fc9-8185-7be3b40c94b3/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_b7931d4d-be4b-4fc9-8185-7be3b40c94b3/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/list-ext-properties/list-ext.i -s /tmp/vcloud-vcloud-master/worker/run_dir_b7931d4d-be4b-4fc9-8185-7be3b40c94b3/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_b7931d4d-be4b-4fc9-8185-7be3b40c94b3/bin/uautomizer --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a3eaec471f51d4269ee2125af75884a2ba8bd8fa ..................................................................................................................................................................................................................................................................................... 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 [2019-12-07 10:07:46,484 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 10:07:46,485 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 10:07:46,493 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 10:07:46,493 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 10:07:46,494 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 10:07:46,495 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 10:07:46,496 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 10:07:46,497 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 10:07:46,498 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 10:07:46,498 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 10:07:46,499 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 10:07:46,499 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 10:07:46,500 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 10:07:46,501 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 10:07:46,501 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 10:07:46,502 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 10:07:46,502 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 10:07:46,504 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 10:07:46,505 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 10:07:46,506 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 10:07:46,507 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 10:07:46,508 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 10:07:46,508 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 10:07:46,510 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 10:07:46,510 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 10:07:46,510 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 10:07:46,511 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 10:07:46,511 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 10:07:46,512 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 10:07:46,512 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 10:07:46,512 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 10:07:46,513 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 10:07:46,513 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 10:07:46,514 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 10:07:46,514 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 10:07:46,514 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 10:07:46,514 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 10:07:46,514 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 10:07:46,515 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 10:07:46,515 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 10:07:46,516 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_b7931d4d-be4b-4fc9-8185-7be3b40c94b3/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-12-07 10:07:46,525 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 10:07:46,525 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 10:07:46,526 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 10:07:46,526 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 10:07:46,526 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 10:07:46,526 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 10:07:46,527 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 10:07:46,527 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 10:07:46,527 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 10:07:46,527 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 10:07:46,527 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 10:07:46,527 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 10:07:46,527 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 10:07:46,527 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 10:07:46,528 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 10:07:46,528 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 10:07:46,528 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 10:07:46,528 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 10:07:46,528 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 10:07:46,528 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 10:07:46,528 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 10:07:46,529 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 10:07:46,529 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 10:07:46,529 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 10:07:46,529 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 10:07:46,529 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 10:07:46,529 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 10:07:46,529 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 10:07:46,529 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 10:07:46,529 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_b7931d4d-be4b-4fc9-8185-7be3b40c94b3/bin/uautomizer 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 -> Automizer 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 -> a3eaec471f51d4269ee2125af75884a2ba8bd8fa [2019-12-07 10:07:46,627 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 10:07:46,635 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 10:07:46,638 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 10:07:46,638 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 10:07:46,639 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 10:07:46,639 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_b7931d4d-be4b-4fc9-8185-7be3b40c94b3/bin/uautomizer/../../sv-benchmarks/c/list-ext-properties/list-ext.i [2019-12-07 10:07:46,676 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b7931d4d-be4b-4fc9-8185-7be3b40c94b3/bin/uautomizer/data/e580bafb4/f0848ecd980340b1a91d99161f0d2f6e/FLAG6c64d434f [2019-12-07 10:07:47,132 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 10:07:47,133 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_b7931d4d-be4b-4fc9-8185-7be3b40c94b3/sv-benchmarks/c/list-ext-properties/list-ext.i [2019-12-07 10:07:47,142 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b7931d4d-be4b-4fc9-8185-7be3b40c94b3/bin/uautomizer/data/e580bafb4/f0848ecd980340b1a91d99161f0d2f6e/FLAG6c64d434f [2019-12-07 10:07:47,151 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_b7931d4d-be4b-4fc9-8185-7be3b40c94b3/bin/uautomizer/data/e580bafb4/f0848ecd980340b1a91d99161f0d2f6e [2019-12-07 10:07:47,153 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 10:07:47,154 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 10:07:47,154 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 10:07:47,154 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 10:07:47,157 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 10:07:47,157 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 10:07:47" (1/1) ... [2019-12-07 10:07:47,159 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fcd4d65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:07:47, skipping insertion in model container [2019-12-07 10:07:47,159 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 10:07:47" (1/1) ... [2019-12-07 10:07:47,164 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 10:07:47,187 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 10:07:47,388 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 10:07:47,394 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 10:07:47,425 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 10:07:47,455 INFO L208 MainTranslator]: Completed translation [2019-12-07 10:07:47,456 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:07:47 WrapperNode [2019-12-07 10:07:47,456 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 10:07:47,456 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 10:07:47,457 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 10:07:47,457 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 10:07:47,462 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:07:47" (1/1) ... [2019-12-07 10:07:47,472 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:07:47" (1/1) ... [2019-12-07 10:07:47,489 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 10:07:47,489 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 10:07:47,489 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 10:07:47,489 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 10:07:47,495 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:07:47" (1/1) ... [2019-12-07 10:07:47,495 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:07:47" (1/1) ... [2019-12-07 10:07:47,498 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:07:47" (1/1) ... [2019-12-07 10:07:47,498 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:07:47" (1/1) ... [2019-12-07 10:07:47,503 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:07:47" (1/1) ... [2019-12-07 10:07:47,506 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:07:47" (1/1) ... [2019-12-07 10:07:47,508 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:07:47" (1/1) ... [2019-12-07 10:07:47,509 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 10:07:47,510 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 10:07:47,510 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 10:07:47,510 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 10:07:47,510 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:07:47" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b7931d4d-be4b-4fc9-8185-7be3b40c94b3/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (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:2000 [2019-12-07 10:07:47,549 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-07 10:07:47,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-07 10:07:47,549 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-12-07 10:07:47,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-12-07 10:07:47,549 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-12-07 10:07:47,550 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 10:07:47,550 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 10:07:47,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 10:07:47,742 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 10:07:47,743 INFO L287 CfgBuilder]: Removed 15 assume(true) statements. [2019-12-07 10:07:47,743 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 10:07:47 BoogieIcfgContainer [2019-12-07 10:07:47,744 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 10:07:47,744 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 10:07:47,744 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 10:07:47,746 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 10:07:47,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 10:07:47" (1/3) ... [2019-12-07 10:07:47,747 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b598746 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 10:07:47, skipping insertion in model container [2019-12-07 10:07:47,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:07:47" (2/3) ... [2019-12-07 10:07:47,747 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b598746 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 10:07:47, skipping insertion in model container [2019-12-07 10:07:47,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 10:07:47" (3/3) ... [2019-12-07 10:07:47,748 INFO L109 eAbstractionObserver]: Analyzing ICFG list-ext.i [2019-12-07 10:07:47,754 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 10:07:47,759 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 10:07:47,766 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 10:07:47,780 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 10:07:47,780 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 10:07:47,780 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 10:07:47,780 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 10:07:47,780 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 10:07:47,780 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 10:07:47,781 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 10:07:47,781 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 10:07:47,790 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2019-12-07 10:07:47,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-12-07 10:07:47,794 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 10:07:47,794 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 10:07:47,794 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 10:07:47,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 10:07:47,798 INFO L82 PathProgramCache]: Analyzing trace with hash 1648325711, now seen corresponding path program 1 times [2019-12-07 10:07:47,803 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 10:07:47,803 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867223592] [2019-12-07 10:07:47,804 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 10:07:47,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:07:47,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 10:07:47,886 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867223592] [2019-12-07 10:07:47,887 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 10:07:47,887 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 10:07:47,887 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782149842] [2019-12-07 10:07:47,890 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-07 10:07:47,890 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 10:07:47,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-07 10:07:47,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 10:07:47,900 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2019-12-07 10:07:47,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 10:07:47,913 INFO L93 Difference]: Finished difference Result 55 states and 80 transitions. [2019-12-07 10:07:47,913 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-07 10:07:47,913 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2019-12-07 10:07:47,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 10:07:47,919 INFO L225 Difference]: With dead ends: 55 [2019-12-07 10:07:47,919 INFO L226 Difference]: Without dead ends: 23 [2019-12-07 10:07:47,921 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 10:07:47,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-12-07 10:07:47,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-12-07 10:07:47,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-12-07 10:07:47,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 28 transitions. [2019-12-07 10:07:47,943 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 28 transitions. Word has length 12 [2019-12-07 10:07:47,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 10:07:47,943 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 28 transitions. [2019-12-07 10:07:47,943 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-07 10:07:47,943 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 28 transitions. [2019-12-07 10:07:47,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-12-07 10:07:47,944 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 10:07:47,944 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 10:07:47,944 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 10:07:47,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 10:07:47,944 INFO L82 PathProgramCache]: Analyzing trace with hash 1013764981, now seen corresponding path program 1 times [2019-12-07 10:07:47,944 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 10:07:47,945 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085010582] [2019-12-07 10:07:47,945 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 10:07:47,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 10:07:47,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 10:07:48,001 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 10:07:48,001 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 10:07:48,021 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 10:07:48 BoogieIcfgContainer [2019-12-07 10:07:48,021 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 10:07:48,022 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 10:07:48,022 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 10:07:48,022 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 10:07:48,022 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 10:07:47" (3/4) ... [2019-12-07 10:07:48,024 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-12-07 10:07:48,056 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_b7931d4d-be4b-4fc9-8185-7be3b40c94b3/bin/uautomizer/witness.graphml [2019-12-07 10:07:48,056 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 10:07:48,057 INFO L168 Benchmark]: Toolchain (without parser) took 903.14 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.2 MB). Free memory was 940.9 MB in the beginning and 1.0 GB in the end (delta: -108.8 MB). Peak memory consumption was 24.4 MB. Max. memory is 11.5 GB. [2019-12-07 10:07:48,058 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 961.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 10:07:48,058 INFO L168 Benchmark]: CACSL2BoogieTranslator took 301.83 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.2 MB). Free memory was 940.9 MB in the beginning and 1.1 GB in the end (delta: -170.9 MB). Peak memory consumption was 18.0 MB. Max. memory is 11.5 GB. [2019-12-07 10:07:48,059 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.54 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. [2019-12-07 10:07:48,059 INFO L168 Benchmark]: Boogie Preprocessor took 20.48 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. [2019-12-07 10:07:48,060 INFO L168 Benchmark]: RCFGBuilder took 233.83 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: 28.8 MB). Peak memory consumption was 28.8 MB. Max. memory is 11.5 GB. [2019-12-07 10:07:48,060 INFO L168 Benchmark]: TraceAbstraction took 277.34 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: 22.6 MB). Peak memory consumption was 22.6 MB. Max. memory is 11.5 GB. [2019-12-07 10:07:48,060 INFO L168 Benchmark]: Witness Printer took 34.24 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. [2019-12-07 10:07:48,063 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * 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 961.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 301.83 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.2 MB). Free memory was 940.9 MB in the beginning and 1.1 GB in the end (delta: -170.9 MB). Peak memory consumption was 18.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 32.54 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. * Boogie Preprocessor took 20.48 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. * RCFGBuilder took 233.83 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: 28.8 MB). Peak memory consumption was 28.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 277.34 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: 22.6 MB). Peak memory consumption was 22.6 MB. Max. memory is 11.5 GB. * Witness Printer took 34.24 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. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 556]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L521] int i = 0; [L522] int y = 0; [L523] List a = (List) malloc(sizeof(struct node)); [L524] COND FALSE !(a == 0) [L525] List t; [L526] List p = a; [L527] i < 10 && __VERIFIER_nondet_int() [L527] i < 10 && __VERIFIER_nondet_int() [L527] COND FALSE !(i < 10 && __VERIFIER_nondet_int()) [L535] y < 10 && __VERIFIER_nondet_int() [L535] y < 10 && __VERIFIER_nondet_int() [L535] COND FALSE !(y < 10 && __VERIFIER_nondet_int()) [L543] p->h = 3 [L544] i = 0 [L545] y = 0 [L546] p = a [L547] EXPR p->h [L547] COND FALSE !(p->h == 1) [L551] EXPR p->h [L551] COND FALSE !(p->h == 2) [L555] EXPR p->h [L555] COND TRUE p->h != 3 || (i + y) < 20 [L556] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 33 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 42 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 30 NumberOfCodeBlocks, 30 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 121 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...