./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 678e0110 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_0d87cb80-7414-47d1-8876-19cc1eb37119/bin/ukojak/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_0d87cb80-7414-47d1-8876-19cc1eb37119/bin/ukojak/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_0d87cb80-7414-47d1-8876-19cc1eb37119/bin/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_0d87cb80-7414-47d1-8876-19cc1eb37119/bin/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/recursive-simple/id_b3_o2-2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_0d87cb80-7414-47d1-8876-19cc1eb37119/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_0d87cb80-7414-47d1-8876-19cc1eb37119/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 0.1.24-678e011 [2019-11-19 23:53:22,025 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-19 23:53:22,027 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-19 23:53:22,045 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-19 23:53:22,045 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-19 23:53:22,047 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-19 23:53:22,049 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-19 23:53:22,060 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-19 23:53:22,065 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-19 23:53:22,066 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-19 23:53:22,067 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-19 23:53:22,069 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-19 23:53:22,069 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-19 23:53:22,070 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-19 23:53:22,071 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-19 23:53:22,073 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-19 23:53:22,074 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-19 23:53:22,075 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-19 23:53:22,077 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-19 23:53:22,079 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-19 23:53:22,081 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-19 23:53:22,082 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-19 23:53:22,084 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-19 23:53:22,085 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-19 23:53:22,088 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-19 23:53:22,088 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-19 23:53:22,088 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-19 23:53:22,089 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-19 23:53:22,090 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-19 23:53:22,091 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-19 23:53:22,091 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-19 23:53:22,092 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-19 23:53:22,092 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-19 23:53:22,093 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-19 23:53:22,094 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-19 23:53:22,094 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-19 23:53:22,095 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-19 23:53:22,095 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-19 23:53:22,095 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-19 23:53:22,096 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-19 23:53:22,097 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-19 23:53:22,098 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_0d87cb80-7414-47d1-8876-19cc1eb37119/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf [2019-11-19 23:53:22,112 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-19 23:53:22,113 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-19 23:53:22,113 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-19 23:53:22,114 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2019-11-19 23:53:22,114 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-19 23:53:22,115 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-19 23:53:22,115 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-19 23:53:22,115 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-19 23:53:22,115 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-19 23:53:22,116 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-19 23:53:22,116 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-19 23:53:22,116 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-19 23:53:22,116 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-19 23:53:22,116 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-19 23:53:22,117 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-19 23:53:22,117 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-19 23:53:22,117 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-19 23:53:22,117 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-19 23:53:22,118 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2019-11-19 23:53:22,118 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2019-11-19 23:53:22,118 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-19 23:53:22,118 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-19 23:53:22,118 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2019-11-19 23:53:22,119 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-19 23:53:22,119 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-19 23:53:22,119 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-19 23:53:22,119 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2019-11-19 23:53:22,120 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-19 23:53:22,120 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-19 23:53:22,120 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_0d87cb80-7414-47d1-8876-19cc1eb37119/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 [2019-11-19 23:53:22,326 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-19 23:53:22,343 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-19 23:53:22,347 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-19 23:53:22,349 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-19 23:53:22,350 INFO L275 PluginConnector]: CDTParser initialized [2019-11-19 23:53:22,352 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_0d87cb80-7414-47d1-8876-19cc1eb37119/bin/ukojak/../../sv-benchmarks/c/recursive-simple/id_b3_o2-2.c [2019-11-19 23:53:22,428 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0d87cb80-7414-47d1-8876-19cc1eb37119/bin/ukojak/data/46886f86c/5ea61bd531014a5eb2077a4ddde9c97d/FLAG626d91118 [2019-11-19 23:53:22,945 INFO L306 CDTParser]: Found 1 translation units. [2019-11-19 23:53:22,946 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_0d87cb80-7414-47d1-8876-19cc1eb37119/sv-benchmarks/c/recursive-simple/id_b3_o2-2.c [2019-11-19 23:53:22,952 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0d87cb80-7414-47d1-8876-19cc1eb37119/bin/ukojak/data/46886f86c/5ea61bd531014a5eb2077a4ddde9c97d/FLAG626d91118 [2019-11-19 23:53:23,284 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_0d87cb80-7414-47d1-8876-19cc1eb37119/bin/ukojak/data/46886f86c/5ea61bd531014a5eb2077a4ddde9c97d [2019-11-19 23:53:23,290 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-19 23:53:23,292 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-19 23:53:23,297 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-19 23:53:23,297 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-19 23:53:23,301 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-19 23:53:23,302 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 11:53:23" (1/1) ... [2019-11-19 23:53:23,305 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4bae6bdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:53:23, skipping insertion in model container [2019-11-19 23:53:23,305 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 11:53:23" (1/1) ... [2019-11-19 23:53:23,313 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-19 23:53:23,332 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-19 23:53:23,547 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 23:53:23,551 INFO L188 MainTranslator]: Completed pre-run [2019-11-19 23:53:23,646 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 23:53:23,667 INFO L192 MainTranslator]: Completed translation [2019-11-19 23:53:23,668 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:53:23 WrapperNode [2019-11-19 23:53:23,668 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-19 23:53:23,670 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-19 23:53:23,670 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-19 23:53:23,670 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-19 23:53:23,683 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:53:23" (1/1) ... [2019-11-19 23:53:23,692 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:53:23" (1/1) ... [2019-11-19 23:53:23,712 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-19 23:53:23,712 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-19 23:53:23,713 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-19 23:53:23,713 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-19 23:53:23,724 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:53:23" (1/1) ... [2019-11-19 23:53:23,724 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:53:23" (1/1) ... [2019-11-19 23:53:23,725 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:53:23" (1/1) ... [2019-11-19 23:53:23,726 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:53:23" (1/1) ... [2019-11-19 23:53:23,732 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:53:23" (1/1) ... [2019-11-19 23:53:23,736 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:53:23" (1/1) ... [2019-11-19 23:53:23,737 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:53:23" (1/1) ... [2019-11-19 23:53:23,744 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-19 23:53:23,745 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-19 23:53:23,745 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-19 23:53:23,745 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-19 23:53:23,747 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:53:23" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0d87cb80-7414-47d1-8876-19cc1eb37119/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 [2019-11-19 23:53:23,823 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-19 23:53:23,824 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-19 23:53:23,824 INFO L130 BoogieDeclarations]: Found specification of procedure id [2019-11-19 23:53:23,825 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2019-11-19 23:53:24,071 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-19 23:53:24,071 INFO L285 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-19 23:53:24,073 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 11:53:24 BoogieIcfgContainer [2019-11-19 23:53:24,073 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-19 23:53:24,073 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2019-11-19 23:53:24,073 INFO L271 PluginConnector]: Initializing CodeCheck... [2019-11-19 23:53:24,087 INFO L275 PluginConnector]: CodeCheck initialized [2019-11-19 23:53:24,087 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 11:53:24" (1/1) ... [2019-11-19 23:53:24,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:53:24,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-11-19 23:53:24,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 14 states and 16 transitions. [2019-11-19 23:53:24,203 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2019-11-19 23:53:24,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-19 23:53:24,224 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-11-19 23:53:24,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:53:24,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 23:53:24,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-11-19 23:53:24,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 18 states and 21 transitions. [2019-11-19 23:53:24,562 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2019-11-19 23:53:24,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-19 23:53:24,562 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-11-19 23:53:24,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:53:24,832 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-19 23:53:25,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-11-19 23:53:25,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 25 states and 32 transitions. [2019-11-19 23:53:25,534 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 32 transitions. [2019-11-19 23:53:25,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-11-19 23:53:25,536 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-11-19 23:53:25,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:53:25,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:53:25,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:53:25,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:53:25,786 WARN L483 CodeCheckObserver]: This program is UNSAFE, Check terminated with 3 iterations. [2019-11-19 23:53:25,823 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 19.11 11:53:25 ImpRootNode [2019-11-19 23:53:25,823 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2019-11-19 23:53:25,823 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-19 23:53:25,824 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-19 23:53:25,824 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-19 23:53:25,825 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 11:53:24" (3/4) ... [2019-11-19 23:53:25,827 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-19 23:53:25,910 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_0d87cb80-7414-47d1-8876-19cc1eb37119/bin/ukojak/witness.graphml [2019-11-19 23:53:25,910 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-19 23:53:25,912 INFO L168 Benchmark]: Toolchain (without parser) took 2620.38 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.9 MB). Free memory was 950.1 MB in the beginning and 1.0 GB in the end (delta: -73.2 MB). Peak memory consumption was 75.7 MB. Max. memory is 11.5 GB. [2019-11-19 23:53:25,913 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 23:53:25,914 INFO L168 Benchmark]: CACSL2BoogieTranslator took 373.12 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.9 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -190.5 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. [2019-11-19 23:53:25,914 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.24 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. [2019-11-19 23:53:25,914 INFO L168 Benchmark]: Boogie Preprocessor took 32.06 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. [2019-11-19 23:53:25,915 INFO L168 Benchmark]: RCFGBuilder took 327.94 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: 22.8 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. [2019-11-19 23:53:25,915 INFO L168 Benchmark]: CodeCheck took 1749.79 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: 94.5 MB). Peak memory consumption was 94.5 MB. Max. memory is 11.5 GB. [2019-11-19 23:53:25,916 INFO L168 Benchmark]: Witness Printer took 86.93 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. [2019-11-19 23:53:25,918 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: 1.6s, 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, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s 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 0.36 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 373.12 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.9 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -190.5 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 42.24 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 32.06 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 327.94 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: 22.8 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. * CodeCheck took 1749.79 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: 94.5 MB). Peak memory consumption was 94.5 MB. Max. memory is 11.5 GB. * Witness Printer took 86.93 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...