./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-acceleration/underapprox_1-1.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_a65464bb-2162-4cea-ba1a-f064da0147aa/bin/ukojak/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_a65464bb-2162-4cea-ba1a-f064da0147aa/bin/ukojak/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_a65464bb-2162-4cea-ba1a-f064da0147aa/bin/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_a65464bb-2162-4cea-ba1a-f064da0147aa/bin/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/loop-acceleration/underapprox_1-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_a65464bb-2162-4cea-ba1a-f064da0147aa/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_a65464bb-2162-4cea-ba1a-f064da0147aa/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 517a91fa544aee14f6c894b24f388accaee55d2d ............................................................................................................................................................................................................................................................................. 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 04:44:48,325 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 04:44:48,327 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 04:44:48,404 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 04:44:48,405 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 04:44:48,410 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 04:44:48,413 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 04:44:48,416 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 04:44:48,418 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 04:44:48,419 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 04:44:48,420 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 04:44:48,422 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 04:44:48,423 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 04:44:48,425 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 04:44:48,427 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 04:44:48,430 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 04:44:48,432 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 04:44:48,438 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 04:44:48,444 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 04:44:48,452 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 04:44:48,456 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 04:44:48,457 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 04:44:48,460 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 04:44:48,461 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 04:44:48,469 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 04:44:48,470 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 04:44:48,470 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 04:44:48,473 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 04:44:48,473 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 04:44:48,475 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 04:44:48,475 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 04:44:48,477 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 04:44:48,479 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 04:44:48,480 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 04:44:48,482 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 04:44:48,482 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 04:44:48,483 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 04:44:48,483 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 04:44:48,483 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 04:44:48,484 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 04:44:48,485 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 04:44:48,488 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_a65464bb-2162-4cea-ba1a-f064da0147aa/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf [2020-11-28 04:44:48,529 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 04:44:48,530 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 04:44:48,531 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 04:44:48,532 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2020-11-28 04:44:48,532 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 04:44:48,533 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 04:44:48,533 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 04:44:48,533 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 04:44:48,533 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 04:44:48,533 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 04:44:48,534 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 04:44:48,535 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 04:44:48,535 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 04:44:48,535 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 04:44:48,535 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 04:44:48,536 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 04:44:48,536 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 04:44:48,536 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 04:44:48,536 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2020-11-28 04:44:48,536 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2020-11-28 04:44:48,536 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 04:44:48,537 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 04:44:48,537 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2020-11-28 04:44:48,537 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 04:44:48,537 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 04:44:48,537 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 04:44:48,538 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2020-11-28 04:44:48,538 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 04:44:48,538 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 04:44:48,538 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_a65464bb-2162-4cea-ba1a-f064da0147aa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_a65464bb-2162-4cea-ba1a-f064da0147aa/bin/ukojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 517a91fa544aee14f6c894b24f388accaee55d2d [2020-11-28 04:44:48,842 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 04:44:48,874 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 04:44:48,877 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 04:44:48,879 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 04:44:48,880 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 04:44:48,881 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_a65464bb-2162-4cea-ba1a-f064da0147aa/bin/ukojak/../../sv-benchmarks/c/loop-acceleration/underapprox_1-1.c [2020-11-28 04:44:48,980 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a65464bb-2162-4cea-ba1a-f064da0147aa/bin/ukojak/data/b73d16b25/08513cbba5be47d0bad652ccb56365e6/FLAG9429994e5 [2020-11-28 04:44:49,519 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 04:44:49,520 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_a65464bb-2162-4cea-ba1a-f064da0147aa/sv-benchmarks/c/loop-acceleration/underapprox_1-1.c [2020-11-28 04:44:49,534 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a65464bb-2162-4cea-ba1a-f064da0147aa/bin/ukojak/data/b73d16b25/08513cbba5be47d0bad652ccb56365e6/FLAG9429994e5 [2020-11-28 04:44:49,895 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_a65464bb-2162-4cea-ba1a-f064da0147aa/bin/ukojak/data/b73d16b25/08513cbba5be47d0bad652ccb56365e6 [2020-11-28 04:44:49,898 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 04:44:49,900 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 04:44:49,902 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 04:44:49,902 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 04:44:49,920 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 04:44:49,921 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:44:49" (1/1) ... [2020-11-28 04:44:49,923 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67c15401 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:44:49, skipping insertion in model container [2020-11-28 04:44:49,924 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:44:49" (1/1) ... [2020-11-28 04:44:49,937 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 04:44:49,960 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 04:44:50,252 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 04:44:50,289 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 04:44:50,320 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 04:44:50,334 INFO L208 MainTranslator]: Completed translation [2020-11-28 04:44:50,335 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:44:50 WrapperNode [2020-11-28 04:44:50,335 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 04:44:50,337 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 04:44:50,337 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 04:44:50,338 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 04:44:50,345 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:44:50" (1/1) ... [2020-11-28 04:44:50,354 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:44:50" (1/1) ... [2020-11-28 04:44:50,375 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 04:44:50,376 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 04:44:50,376 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 04:44:50,376 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 04:44:50,387 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:44:50" (1/1) ... [2020-11-28 04:44:50,388 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:44:50" (1/1) ... [2020-11-28 04:44:50,389 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:44:50" (1/1) ... [2020-11-28 04:44:50,390 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:44:50" (1/1) ... [2020-11-28 04:44:50,393 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:44:50" (1/1) ... [2020-11-28 04:44:50,398 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:44:50" (1/1) ... [2020-11-28 04:44:50,400 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:44:50" (1/1) ... [2020-11-28 04:44:50,402 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 04:44:50,403 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 04:44:50,403 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 04:44:50,403 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 04:44:50,405 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:44:50" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a65464bb-2162-4cea-ba1a-f064da0147aa/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 04:44:50,497 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 04:44:50,498 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 04:44:50,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 04:44:50,498 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 04:44:50,798 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 04:44:50,798 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-28 04:44:50,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:44:50 BoogieIcfgContainer [2020-11-28 04:44:50,801 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 04:44:50,802 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2020-11-28 04:44:50,802 INFO L271 PluginConnector]: Initializing CodeCheck... [2020-11-28 04:44:50,834 INFO L275 PluginConnector]: CodeCheck initialized [2020-11-28 04:44:50,844 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:44:50" (1/1) ... [2020-11-28 04:44:50,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 04:44:50,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:44:50,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 7 states and 8 transitions. [2020-11-28 04:44:50,902 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 8 transitions. [2020-11-28 04:44:50,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-28 04:44:50,906 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:44:51,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:44:51,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 04:44:51,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:44:51,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 9 states and 10 transitions. [2020-11-28 04:44:51,376 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2020-11-28 04:44:51,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-28 04:44:51,377 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:44:51,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:44:51,533 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 04:44:51,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:44:51,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 10 states and 13 transitions. [2020-11-28 04:44:51,751 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 13 transitions. [2020-11-28 04:44:51,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-28 04:44:51,751 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:44:51,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:44:51,945 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 04:44:52,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:44:52,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 11 states and 14 transitions. [2020-11-28 04:44:52,208 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 14 transitions. [2020-11-28 04:44:52,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-28 04:44:52,208 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:44:52,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:44:52,410 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 04:44:52,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:44:52,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 12 states and 16 transitions. [2020-11-28 04:44:52,691 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 16 transitions. [2020-11-28 04:44:52,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-28 04:44:52,692 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:44:52,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:44:52,890 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 04:44:53,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:44:53,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 13 states and 18 transitions. [2020-11-28 04:44:53,213 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 18 transitions. [2020-11-28 04:44:53,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-28 04:44:53,213 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:44:53,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:44:53,384 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 04:44:53,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:44:53,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 14 states and 20 transitions. [2020-11-28 04:44:53,703 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 20 transitions. [2020-11-28 04:44:53,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 04:44:53,704 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:44:53,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 04:44:53,760 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 04:44:53,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 04:44:53,798 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 04:44:53,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 04:44:53,878 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 04:44:53,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 04:44:53,900 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 04:44:53,939 WARN L483 CodeCheckObserver]: This program is UNSAFE, Check terminated with 7 iterations. [2020-11-28 04:44:53,972 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 28.11 04:44:53 ImpRootNode [2020-11-28 04:44:53,973 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2020-11-28 04:44:53,976 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 04:44:53,977 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 04:44:53,977 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 04:44:53,978 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:44:50" (3/4) ... [2020-11-28 04:44:53,980 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 04:44:54,045 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_a65464bb-2162-4cea-ba1a-f064da0147aa/bin/ukojak/witness.graphml [2020-11-28 04:44:54,045 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 04:44:54,047 INFO L168 Benchmark]: Toolchain (without parser) took 4146.53 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 57.0 MB in the beginning and 57.0 MB in the end (delta: 57.1 kB). Peak memory consumption was 17.8 MB. Max. memory is 16.1 GB. [2020-11-28 04:44:54,048 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 71.3 MB. Free memory was 32.9 MB in the beginning and 32.8 MB in the end (delta: 33.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 04:44:54,054 INFO L168 Benchmark]: CACSL2BoogieTranslator took 434.19 ms. Allocated memory is still 88.1 MB. Free memory was 56.9 MB in the beginning and 66.6 MB in the end (delta: -9.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 04:44:54,056 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.22 ms. Allocated memory is still 88.1 MB. Free memory was 66.6 MB in the beginning and 65.3 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 04:44:54,057 INFO L168 Benchmark]: Boogie Preprocessor took 26.17 ms. Allocated memory is still 88.1 MB. Free memory was 65.3 MB in the beginning and 64.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 04:44:54,058 INFO L168 Benchmark]: RCFGBuilder took 398.13 ms. Allocated memory is still 88.1 MB. Free memory was 64.2 MB in the beginning and 51.6 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-28 04:44:54,060 INFO L168 Benchmark]: CodeCheck took 3170.83 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 51.6 MB in the beginning and 59.4 MB in the end (delta: -7.8 MB). Peak memory consumption was 12.3 MB. Max. memory is 16.1 GB. [2020-11-28 04:44:54,064 INFO L168 Benchmark]: Witness Printer took 68.70 ms. Allocated memory is still 107.0 MB. Free memory was 59.1 MB in the beginning and 57.0 MB in the end (delta: 2.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 04:44:54,070 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 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 3.0s, OverallIterations: 7, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 32 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 894 SolverSat, 522 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 307 GetRequests, 261 SyntacticMatches, 6 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 576 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 49 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 33 ConstructedInterpolants, 0 QuantifiedInterpolants, 1084 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 1 PerfectInterpolantSequences, 0/35 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: [L13] unsigned int x = 0; [L14] unsigned int y = 1; [L16] COND TRUE x < 6 [L17] x++ [L18] y *= 2 [L16] COND TRUE x < 6 [L17] x++ [L18] y *= 2 [L16] COND TRUE x < 6 [L17] x++ [L18] y *= 2 [L16] COND TRUE x < 6 [L17] x++ [L18] y *= 2 [L16] COND TRUE x < 6 [L17] x++ [L18] y *= 2 [L16] COND TRUE x < 6 [L17] x++ [L18] y *= 2 [L16] COND FALSE !(x < 6) [L6] COND TRUE !(cond) [L3] __assert_fail("0", "underapprox_1-1.c", 3, "reach_error") * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 71.3 MB. Free memory was 32.9 MB in the beginning and 32.8 MB in the end (delta: 33.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 434.19 ms. Allocated memory is still 88.1 MB. Free memory was 56.9 MB in the beginning and 66.6 MB in the end (delta: -9.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 38.22 ms. Allocated memory is still 88.1 MB. Free memory was 66.6 MB in the beginning and 65.3 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 26.17 ms. Allocated memory is still 88.1 MB. Free memory was 65.3 MB in the beginning and 64.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 398.13 ms. Allocated memory is still 88.1 MB. Free memory was 64.2 MB in the beginning and 51.6 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * CodeCheck took 3170.83 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 51.6 MB in the beginning and 59.4 MB in the end (delta: -7.8 MB). Peak memory consumption was 12.3 MB. Max. memory is 16.1 GB. * Witness Printer took 68.70 ms. Allocated memory is still 107.0 MB. Free memory was 59.1 MB in the beginning and 57.0 MB in the end (delta: 2.1 MB). There was no memory consumed. Max. memory is 16.1 GB. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...