./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive/BallRajamani-SPIN2000-Fig1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_e6125731-7548-4fa5-926c-32f94895a1f1/bin/ukojak/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_e6125731-7548-4fa5-926c-32f94895a1f1/bin/ukojak/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_e6125731-7548-4fa5-926c-32f94895a1f1/bin/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_e6125731-7548-4fa5-926c-32f94895a1f1/bin/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/recursive/BallRajamani-SPIN2000-Fig1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_e6125731-7548-4fa5-926c-32f94895a1f1/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_e6125731-7548-4fa5-926c-32f94895a1f1/bin/ukojak --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Kojak --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash dc0ee77d2c77f6a72f7fe76138da8c8b9afd4553 ....................................................................................................................................................................................................................................................... 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 0.2.0-a4ecdab [2020-11-28 04:40:15,947 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 04:40:15,950 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 04:40:16,035 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 04:40:16,045 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 04:40:16,047 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 04:40:16,049 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 04:40:16,052 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 04:40:16,054 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 04:40:16,055 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 04:40:16,057 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 04:40:16,059 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 04:40:16,059 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 04:40:16,061 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 04:40:16,062 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 04:40:16,064 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 04:40:16,065 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 04:40:16,067 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 04:40:16,069 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 04:40:16,074 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 04:40:16,079 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 04:40:16,081 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 04:40:16,083 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 04:40:16,085 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 04:40:16,093 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 04:40:16,098 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 04:40:16,098 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 04:40:16,099 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 04:40:16,101 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 04:40:16,103 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 04:40:16,103 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 04:40:16,105 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 04:40:16,107 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 04:40:16,108 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 04:40:16,110 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 04:40:16,110 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 04:40:16,111 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 04:40:16,112 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 04:40:16,112 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 04:40:16,114 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 04:40:16,114 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 04:40:16,117 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_e6125731-7548-4fa5-926c-32f94895a1f1/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf [2020-11-28 04:40:16,160 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 04:40:16,160 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 04:40:16,162 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 04:40:16,162 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2020-11-28 04:40:16,163 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 04:40:16,163 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 04:40:16,164 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 04:40:16,164 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 04:40:16,164 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 04:40:16,164 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 04:40:16,165 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 04:40:16,166 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 04:40:16,166 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 04:40:16,166 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 04:40:16,166 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 04:40:16,167 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 04:40:16,167 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 04:40:16,167 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 04:40:16,167 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2020-11-28 04:40:16,168 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2020-11-28 04:40:16,168 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 04:40:16,168 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 04:40:16,168 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2020-11-28 04:40:16,169 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 04:40:16,169 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 04:40:16,169 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 04:40:16,169 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2020-11-28 04:40:16,169 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 04:40:16,170 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 04:40:16,171 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_e6125731-7548-4fa5-926c-32f94895a1f1/bin/ukojak/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_e6125731-7548-4fa5-926c-32f94895a1f1/bin/ukojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dc0ee77d2c77f6a72f7fe76138da8c8b9afd4553 [2020-11-28 04:40:16,495 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 04:40:16,525 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 04:40:16,527 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 04:40:16,528 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 04:40:16,529 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 04:40:16,530 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_e6125731-7548-4fa5-926c-32f94895a1f1/bin/ukojak/../../sv-benchmarks/c/recursive/BallRajamani-SPIN2000-Fig1.c [2020-11-28 04:40:16,622 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e6125731-7548-4fa5-926c-32f94895a1f1/bin/ukojak/data/1d1eaeed3/f1e521c2ff044058884e05cc528e200e/FLAGef428db0b [2020-11-28 04:40:17,154 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 04:40:17,155 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_e6125731-7548-4fa5-926c-32f94895a1f1/sv-benchmarks/c/recursive/BallRajamani-SPIN2000-Fig1.c [2020-11-28 04:40:17,162 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e6125731-7548-4fa5-926c-32f94895a1f1/bin/ukojak/data/1d1eaeed3/f1e521c2ff044058884e05cc528e200e/FLAGef428db0b [2020-11-28 04:40:17,536 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_e6125731-7548-4fa5-926c-32f94895a1f1/bin/ukojak/data/1d1eaeed3/f1e521c2ff044058884e05cc528e200e [2020-11-28 04:40:17,539 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 04:40:17,544 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 04:40:17,547 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 04:40:17,548 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 04:40:17,552 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 04:40:17,553 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:40:17" (1/1) ... [2020-11-28 04:40:17,555 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65bd028 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:40:17, skipping insertion in model container [2020-11-28 04:40:17,556 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:40:17" (1/1) ... [2020-11-28 04:40:17,563 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 04:40:17,579 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 04:40:17,742 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 04:40:17,766 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 04:40:17,804 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 04:40:17,820 INFO L208 MainTranslator]: Completed translation [2020-11-28 04:40:17,821 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:40:17 WrapperNode [2020-11-28 04:40:17,821 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 04:40:17,826 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 04:40:17,826 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 04:40:17,826 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 04:40:17,836 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:40:17" (1/1) ... [2020-11-28 04:40:17,846 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:40:17" (1/1) ... [2020-11-28 04:40:17,865 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 04:40:17,866 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 04:40:17,867 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 04:40:17,867 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 04:40:17,875 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:40:17" (1/1) ... [2020-11-28 04:40:17,876 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:40:17" (1/1) ... [2020-11-28 04:40:17,888 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:40:17" (1/1) ... [2020-11-28 04:40:17,889 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:40:17" (1/1) ... [2020-11-28 04:40:17,892 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:40:17" (1/1) ... [2020-11-28 04:40:17,893 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:40:17" (1/1) ... [2020-11-28 04:40:17,894 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:40:17" (1/1) ... [2020-11-28 04:40:17,896 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 04:40:17,897 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 04:40:17,897 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 04:40:17,897 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 04:40:17,905 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:40:17" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e6125731-7548-4fa5-926c-32f94895a1f1/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 [2020-11-28 04:40:17,983 INFO L130 BoogieDeclarations]: Found specification of procedure A [2020-11-28 04:40:17,984 INFO L138 BoogieDeclarations]: Found implementation of procedure A [2020-11-28 04:40:17,985 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 04:40:17,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 04:40:17,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 04:40:17,986 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 04:40:18,298 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 04:40:18,298 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-11-28 04:40:18,301 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:40:18 BoogieIcfgContainer [2020-11-28 04:40:18,301 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 04:40:18,304 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2020-11-28 04:40:18,304 INFO L271 PluginConnector]: Initializing CodeCheck... [2020-11-28 04:40:18,318 INFO L275 PluginConnector]: CodeCheck initialized [2020-11-28 04:40:18,318 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:40:18" (1/1) ... [2020-11-28 04:40:18,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 04:40:18,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:40:18,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 16 states and 19 transitions. [2020-11-28 04:40:18,368 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2020-11-28 04:40:18,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-28 04:40:18,373 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:40:18,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:40:18,768 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-28 04:40:18,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:40:18,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 22 states and 26 transitions. [2020-11-28 04:40:18,937 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2020-11-28 04:40:18,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-11-28 04:40:18,939 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:40:19,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 04:40:19,002 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 04:40:19,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 04:40:19,056 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 04:40:19,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 04:40:19,181 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 04:40:19,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 04:40:19,204 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 04:40:19,231 WARN L483 CodeCheckObserver]: This program is UNSAFE, Check terminated with 2 iterations. [2020-11-28 04:40:19,301 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 28.11 04:40:19 ImpRootNode [2020-11-28 04:40:19,301 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2020-11-28 04:40:19,302 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 04:40:19,302 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 04:40:19,302 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 04:40:19,303 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:40:18" (3/4) ... [2020-11-28 04:40:19,305 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 04:40:19,362 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_e6125731-7548-4fa5-926c-32f94895a1f1/bin/ukojak/witness.graphml [2020-11-28 04:40:19,362 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 04:40:19,365 INFO L168 Benchmark]: Toolchain (without parser) took 1819.99 ms. Allocated memory is still 96.5 MB. Free memory was 62.2 MB in the beginning and 55.7 MB in the end (delta: 6.6 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. [2020-11-28 04:40:19,365 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 96.5 MB. Free memory was 68.0 MB in the beginning and 68.0 MB in the end (delta: 25.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 04:40:19,366 INFO L168 Benchmark]: CACSL2BoogieTranslator took 274.48 ms. Allocated memory is still 96.5 MB. Free memory was 62.0 MB in the beginning and 73.6 MB in the end (delta: -11.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 04:40:19,366 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.58 ms. Allocated memory is still 96.5 MB. Free memory was 73.6 MB in the beginning and 72.6 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 04:40:19,367 INFO L168 Benchmark]: Boogie Preprocessor took 29.73 ms. Allocated memory is still 96.5 MB. Free memory was 72.6 MB in the beginning and 71.5 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 04:40:19,368 INFO L168 Benchmark]: RCFGBuilder took 404.14 ms. Allocated memory is still 96.5 MB. Free memory was 71.5 MB in the beginning and 58.5 MB in the end (delta: 13.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-28 04:40:19,368 INFO L168 Benchmark]: CodeCheck took 997.64 ms. Allocated memory is still 96.5 MB. Free memory was 58.5 MB in the beginning and 58.7 MB in the end (delta: -202.4 kB). Peak memory consumption was 1.6 MB. Max. memory is 16.1 GB. [2020-11-28 04:40:19,369 INFO L168 Benchmark]: Witness Printer took 60.54 ms. Allocated memory is still 96.5 MB. Free memory was 58.7 MB in the beginning and 55.7 MB in the end (delta: 3.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-28 04:40:19,373 INFO L339 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, 16 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 15 SDtfs, 6 SDslu, 8 SDs, 0 SdLazy, 21 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 93 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 42 NumberOfCodeBlocks, 42 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 14 ConstructedInterpolants, 0 QuantifiedInterpolants, 896 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 0 PerfectInterpolantSequences, 1/4 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: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L16] int g; [L28] int g = __VERIFIER_nondet_int(); [L29] int h = !g; VAL [g=0] [L30] CALL A(g,h) VAL [\old(a1)=-1, \old(a2)=0, \old(g)=0, g=0] [L19] COND TRUE \read(a1) VAL [\old(a1)=-1, \old(a2)=0, \old(g)=0, a1=-1, a2=0, g=0] [L20] CALL A(a2,a1) VAL [\old(a1)=0, \old(a2)=-1, \old(g)=0, g=0] [L19] COND FALSE !(\read(a1)) [L22] g = a2 VAL [\old(a1)=0, \old(a2)=-1, \old(g)=0, a1=0, a2=-1, g=-1] [L20] RET A(a2,a1) VAL [\old(a1)=-1, \old(a2)=0, \old(g)=0, A(a2,a1)=0, a1=-1, a2=0, g=-1] [L30] RET A(g,h) VAL [g=-1] [L31] CALL A(g,h) VAL [\old(a1)=-1, \old(a2)=0, \old(g)=-1, g=-1] [L19] COND TRUE \read(a1) VAL [\old(a1)=-1, \old(a2)=0, \old(g)=-1, a1=-1, a2=0, g=-1] [L20] CALL A(a2,a1) VAL [\old(a1)=0, \old(a2)=-1, \old(g)=-1, g=-1] [L19] COND FALSE !(\read(a1)) [L22] g = a2 VAL [\old(a1)=0, \old(a2)=-1, \old(g)=-1, a1=0, a2=-1, g=-1] [L20] RET A(a2,a1) VAL [\old(a1)=-1, \old(a2)=0, \old(g)=-1, A(a2,a1)=0, a1=-1, a2=0, g=-1] [L31] RET A(g,h) VAL [g=-1] [L32] COND TRUE \read(g) VAL [g=-1] [L3] __assert_fail("0", "BallRajamani-SPIN2000-Fig1.c", 3, "reach_error") VAL [g=-1] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 96.5 MB. Free memory was 68.0 MB in the beginning and 68.0 MB in the end (delta: 25.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 274.48 ms. Allocated memory is still 96.5 MB. Free memory was 62.0 MB in the beginning and 73.6 MB in the end (delta: -11.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 39.58 ms. Allocated memory is still 96.5 MB. Free memory was 73.6 MB in the beginning and 72.6 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 29.73 ms. Allocated memory is still 96.5 MB. Free memory was 72.6 MB in the beginning and 71.5 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 404.14 ms. Allocated memory is still 96.5 MB. Free memory was 71.5 MB in the beginning and 58.5 MB in the end (delta: 13.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * CodeCheck took 997.64 ms. Allocated memory is still 96.5 MB. Free memory was 58.5 MB in the beginning and 58.7 MB in the end (delta: -202.4 kB). Peak memory consumption was 1.6 MB. Max. memory is 16.1 GB. * Witness Printer took 60.54 ms. Allocated memory is still 96.5 MB. Free memory was 58.7 MB in the beginning and 55.7 MB in the end (delta: 3.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...