./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive-simple/id_b3_o2-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_e4f45730-030e-41ac-8310-8d02db57eb3c/bin/ukojak/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_e4f45730-030e-41ac-8310-8d02db57eb3c/bin/ukojak/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_e4f45730-030e-41ac-8310-8d02db57eb3c/bin/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_e4f45730-030e-41ac-8310-8d02db57eb3c/bin/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/recursive-simple/id_b3_o2-2.c -s /tmp/vcloud-vcloud-master/worker/working_dir_e4f45730-030e-41ac-8310-8d02db57eb3c/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_e4f45730-030e-41ac-8310-8d02db57eb3c/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 3bf945356a28265a842df89cdbf40bfa9a223140 .............................................................................................................................................................................................................................................. 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-cad4683 [2019-10-22 10:12:56,519 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 10:12:56,520 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 10:12:56,529 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 10:12:56,529 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 10:12:56,530 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 10:12:56,531 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 10:12:56,533 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 10:12:56,534 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 10:12:56,535 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 10:12:56,536 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 10:12:56,537 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 10:12:56,537 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 10:12:56,538 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 10:12:56,538 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 10:12:56,539 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 10:12:56,546 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 10:12:56,547 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 10:12:56,548 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 10:12:56,549 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 10:12:56,550 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 10:12:56,551 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 10:12:56,552 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 10:12:56,553 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 10:12:56,554 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 10:12:56,555 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 10:12:56,555 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 10:12:56,555 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 10:12:56,556 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 10:12:56,561 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 10:12:56,562 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 10:12:56,562 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 10:12:56,563 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 10:12:56,564 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 10:12:56,564 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 10:12:56,564 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 10:12:56,565 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 10:12:56,565 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 10:12:56,565 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 10:12:56,566 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 10:12:56,567 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 10:12:56,567 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_e4f45730-030e-41ac-8310-8d02db57eb3c/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf [2019-10-22 10:12:56,578 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 10:12:56,579 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 10:12:56,579 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 10:12:56,579 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2019-10-22 10:12:56,580 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 10:12:56,580 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 10:12:56,580 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 10:12:56,581 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 10:12:56,581 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 10:12:56,581 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 10:12:56,581 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 10:12:56,581 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 10:12:56,581 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 10:12:56,581 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 10:12:56,582 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 10:12:56,582 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 10:12:56,582 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 10:12:56,582 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 10:12:56,582 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2019-10-22 10:12:56,582 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2019-10-22 10:12:56,582 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 10:12:56,583 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 10:12:56,583 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2019-10-22 10:12:56,583 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 10:12:56,583 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 10:12:56,583 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 10:12:56,583 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2019-10-22 10:12:56,583 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 10:12:56,584 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 10:12:56,584 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/working_dir_e4f45730-030e-41ac-8310-8d02db57eb3c/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 -> 3bf945356a28265a842df89cdbf40bfa9a223140 [2019-10-22 10:12:56,608 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 10:12:56,619 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 10:12:56,624 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 10:12:56,625 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 10:12:56,625 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 10:12:56,626 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_e4f45730-030e-41ac-8310-8d02db57eb3c/bin/ukojak/../../sv-benchmarks/c/recursive-simple/id_b3_o2-2.c [2019-10-22 10:12:56,675 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_e4f45730-030e-41ac-8310-8d02db57eb3c/bin/ukojak/data/067333fa3/e27985e516b8449bba8794baefe1afc1/FLAG6f1f6e9d9 [2019-10-22 10:12:57,045 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 10:12:57,045 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_e4f45730-030e-41ac-8310-8d02db57eb3c/sv-benchmarks/c/recursive-simple/id_b3_o2-2.c [2019-10-22 10:12:57,049 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_e4f45730-030e-41ac-8310-8d02db57eb3c/bin/ukojak/data/067333fa3/e27985e516b8449bba8794baefe1afc1/FLAG6f1f6e9d9 [2019-10-22 10:12:57,468 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_e4f45730-030e-41ac-8310-8d02db57eb3c/bin/ukojak/data/067333fa3/e27985e516b8449bba8794baefe1afc1 [2019-10-22 10:12:57,470 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 10:12:57,472 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 10:12:57,473 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 10:12:57,473 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 10:12:57,476 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 10:12:57,477 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 10:12:57" (1/1) ... [2019-10-22 10:12:57,479 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d53c513 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:12:57, skipping insertion in model container [2019-10-22 10:12:57,479 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 10:12:57" (1/1) ... [2019-10-22 10:12:57,487 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 10:12:57,501 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 10:12:57,616 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 10:12:57,620 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 10:12:57,686 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 10:12:57,699 INFO L192 MainTranslator]: Completed translation [2019-10-22 10:12:57,699 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:12:57 WrapperNode [2019-10-22 10:12:57,699 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 10:12:57,700 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 10:12:57,700 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 10:12:57,700 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 10:12:57,706 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:12:57" (1/1) ... [2019-10-22 10:12:57,710 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:12:57" (1/1) ... [2019-10-22 10:12:57,727 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 10:12:57,727 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 10:12:57,727 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 10:12:57,727 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 10:12:57,737 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:12:57" (1/1) ... [2019-10-22 10:12:57,737 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:12:57" (1/1) ... [2019-10-22 10:12:57,737 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:12:57" (1/1) ... [2019-10-22 10:12:57,738 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:12:57" (1/1) ... [2019-10-22 10:12:57,739 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:12:57" (1/1) ... [2019-10-22 10:12:57,741 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:12:57" (1/1) ... [2019-10-22 10:12:57,742 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:12:57" (1/1) ... [2019-10-22 10:12:57,743 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 10:12:57,743 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 10:12:57,743 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 10:12:57,744 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 10:12:57,744 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:12:57" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e4f45730-030e-41ac-8310-8d02db57eb3c/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 [2019-10-22 10:12:57,805 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 10:12:57,806 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 10:12:57,806 INFO L130 BoogieDeclarations]: Found specification of procedure id [2019-10-22 10:12:57,807 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2019-10-22 10:12:57,971 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 10:12:57,971 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-22 10:12:57,972 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 10:12:57 BoogieIcfgContainer [2019-10-22 10:12:57,972 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 10:12:57,972 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2019-10-22 10:12:57,973 INFO L271 PluginConnector]: Initializing CodeCheck... [2019-10-22 10:12:57,982 INFO L275 PluginConnector]: CodeCheck initialized [2019-10-22 10:12:57,983 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 10:12:57" (1/1) ... [2019-10-22 10:12:57,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 10:12:58,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-10-22 10:12:58,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 14 states and 16 transitions. [2019-10-22 10:12:58,027 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2019-10-22 10:12:58,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-10-22 10:12:58,033 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-10-22 10:12:58,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 10:12:58,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 10:12:58,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-10-22 10:12:58,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 18 states and 21 transitions. [2019-10-22 10:12:58,264 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2019-10-22 10:12:58,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-10-22 10:12:58,265 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-10-22 10:12:58,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 10:12:58,466 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-22 10:12:58,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-10-22 10:12:58,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 25 states and 32 transitions. [2019-10-22 10:12:58,845 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 32 transitions. [2019-10-22 10:12:58,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-10-22 10:12:58,846 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-10-22 10:12:58,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 10:12:58,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 10:12:58,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 10:12:58,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 10:12:58,965 WARN L489 CodeCheckObserver]: This program is UNSAFE, Check terminated with 3 iterations. [2019-10-22 10:12:58,992 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 22.10 10:12:58 ImpRootNode [2019-10-22 10:12:58,992 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2019-10-22 10:12:58,993 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 10:12:58,993 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 10:12:58,994 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 10:12:58,994 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 10:12:57" (3/4) ... [2019-10-22 10:12:58,996 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-10-22 10:12:59,034 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_e4f45730-030e-41ac-8310-8d02db57eb3c/bin/ukojak/witness.graphml [2019-10-22 10:12:59,035 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 10:12:59,036 INFO L168 Benchmark]: Toolchain (without parser) took 1564.34 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.1 MB). Free memory was 943.4 MB in the beginning and 1.0 GB in the end (delta: -76.1 MB). Peak memory consumption was 66.0 MB. Max. memory is 11.5 GB. [2019-10-22 10:12:59,037 INFO L168 Benchmark]: CDTParser took 0.20 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. [2019-10-22 10:12:59,037 INFO L168 Benchmark]: CACSL2BoogieTranslator took 226.96 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.1 MB). Free memory was 943.4 MB in the beginning and 1.1 GB in the end (delta: -194.8 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. [2019-10-22 10:12:59,038 INFO L168 Benchmark]: Boogie Procedure Inliner took 27.02 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. [2019-10-22 10:12:59,038 INFO L168 Benchmark]: Boogie Preprocessor took 15.84 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. [2019-10-22 10:12:59,039 INFO L168 Benchmark]: RCFGBuilder took 228.75 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: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. [2019-10-22 10:12:59,039 INFO L168 Benchmark]: CodeCheck took 1019.99 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: 99.0 MB). Peak memory consumption was 99.0 MB. Max. memory is 11.5 GB. [2019-10-22 10:12:59,039 INFO L168 Benchmark]: Witness Printer took 41.99 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. [2019-10-22 10:12:59,042 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 2 procedures, 14 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.9s, OverallIterations: 3, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 28 SDtfs, 12 SDslu, 20 SDs, 0 SdLazy, 84 SolverSat, 36 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 180 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 45 NumberOfCodeBlocks, 45 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 884 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 1 PerfectInterpolantSequences, 2/4 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: 15]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L12] int input = __VERIFIER_nondet_int(); [L13] CALL, EXPR id(input) VAL [\old(x)=2] [L5] COND FALSE !(x==0) VAL [\old(x)=2, x=2] [L6] CALL, EXPR id((unsigned int)x-1) VAL [\old(x)=1] [L5] COND FALSE !(x==0) VAL [\old(x)=1, x=1] [L6] CALL, EXPR id((unsigned int)x-1) VAL [\old(x)=0] [L5] COND TRUE x==0 [L5] return 0; VAL [\old(x)=0, \result=0, x=0] [L6] RET, EXPR id((unsigned int)x-1) VAL [\old(x)=1, id((unsigned int)x-1)=0, x=1] [L6] int ret = id((unsigned int)x-1) + 1; [L7] COND FALSE !(ret > 3) [L8] return ret; VAL [\old(x)=1, \result=1, ret=1, x=1] [L6] RET, EXPR id((unsigned int)x-1) VAL [\old(x)=2, id((unsigned int)x-1)=1, x=2] [L6] int ret = id((unsigned int)x-1) + 1; [L7] COND FALSE !(ret > 3) [L8] return ret; VAL [\old(x)=2, \result=2, ret=2, x=2] [L13] RET, EXPR id(input) [L13] int result = id(input); [L14] COND TRUE result == 2 [L15] __VERIFIER_error() * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 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 226.96 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.1 MB). Free memory was 943.4 MB in the beginning and 1.1 GB in the end (delta: -194.8 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 27.02 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 15.84 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 228.75 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: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. * CodeCheck took 1019.99 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: 99.0 MB). Peak memory consumption was 99.0 MB. Max. memory is 11.5 GB. * Witness Printer took 41.99 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...