./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound1.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_3fe6a996-28d7-41e3-a2fa-7abbb28cb900/bin/ukojak/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_3fe6a996-28d7-41e3-a2fa-7abbb28cb900/bin/ukojak/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_3fe6a996-28d7-41e3-a2fa-7abbb28cb900/bin/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_3fe6a996-28d7-41e3-a2fa-7abbb28cb900/bin/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_3fe6a996-28d7-41e3-a2fa-7abbb28cb900/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_3fe6a996-28d7-41e3-a2fa-7abbb28cb900/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 b16d444b17d990870a86defe9950d11248e76627 ...................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 20:48:27,471 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 20:48:27,473 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 20:48:27,530 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 20:48:27,531 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 20:48:27,536 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 20:48:27,562 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 20:48:27,570 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 20:48:27,573 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 20:48:27,581 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 20:48:27,583 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 20:48:27,585 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 20:48:27,586 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 20:48:27,591 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 20:48:27,593 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 20:48:27,595 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 20:48:27,597 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 20:48:27,602 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 20:48:27,606 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 20:48:27,613 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 20:48:27,616 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 20:48:27,617 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 20:48:27,620 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 20:48:27,621 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 20:48:27,632 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 20:48:27,633 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 20:48:27,633 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 20:48:27,636 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 20:48:27,637 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 20:48:27,638 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 20:48:27,638 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 20:48:27,640 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 20:48:27,642 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 20:48:27,644 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 20:48:27,645 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 20:48:27,646 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 20:48:27,647 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 20:48:27,647 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 20:48:27,647 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 20:48:27,648 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 20:48:27,649 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 20:48:27,656 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_3fe6a996-28d7-41e3-a2fa-7abbb28cb900/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf [2020-11-29 20:48:27,702 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 20:48:27,705 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 20:48:27,707 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-29 20:48:27,708 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2020-11-29 20:48:27,709 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 20:48:27,709 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 20:48:27,709 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 20:48:27,710 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 20:48:27,710 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 20:48:27,710 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 20:48:27,711 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 20:48:27,712 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 20:48:27,712 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 20:48:27,712 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 20:48:27,712 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 20:48:27,713 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 20:48:27,713 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 20:48:27,713 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 20:48:27,714 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2020-11-29 20:48:27,714 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2020-11-29 20:48:27,714 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 20:48:27,714 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 20:48:27,715 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2020-11-29 20:48:27,715 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 20:48:27,715 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 20:48:27,715 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 20:48:27,716 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2020-11-29 20:48:27,716 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 20:48:27,716 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 20:48:27,718 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_3fe6a996-28d7-41e3-a2fa-7abbb28cb900/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_3fe6a996-28d7-41e3-a2fa-7abbb28cb900/bin/ukojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b16d444b17d990870a86defe9950d11248e76627 [2020-11-29 20:48:28,004 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 20:48:28,038 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 20:48:28,041 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 20:48:28,043 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 20:48:28,044 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 20:48:28,045 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_3fe6a996-28d7-41e3-a2fa-7abbb28cb900/bin/ukojak/../../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound1.c [2020-11-29 20:48:28,120 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3fe6a996-28d7-41e3-a2fa-7abbb28cb900/bin/ukojak/data/aeaf1a347/34b115acb2ae475b904e47ac7595c65c/FLAGa44e4f7cc [2020-11-29 20:48:28,695 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 20:48:28,695 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_3fe6a996-28d7-41e3-a2fa-7abbb28cb900/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound1.c [2020-11-29 20:48:28,702 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3fe6a996-28d7-41e3-a2fa-7abbb28cb900/bin/ukojak/data/aeaf1a347/34b115acb2ae475b904e47ac7595c65c/FLAGa44e4f7cc [2020-11-29 20:48:29,055 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_3fe6a996-28d7-41e3-a2fa-7abbb28cb900/bin/ukojak/data/aeaf1a347/34b115acb2ae475b904e47ac7595c65c [2020-11-29 20:48:29,065 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 20:48:29,066 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 20:48:29,070 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 20:48:29,071 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 20:48:29,075 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 20:48:29,076 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:48:29" (1/1) ... [2020-11-29 20:48:29,078 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@184f5b03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:48:29, skipping insertion in model container [2020-11-29 20:48:29,079 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:48:29" (1/1) ... [2020-11-29 20:48:29,086 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 20:48:29,106 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 20:48:29,253 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:48:29,265 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 20:48:29,286 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:48:29,311 INFO L208 MainTranslator]: Completed translation [2020-11-29 20:48:29,314 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:48:29 WrapperNode [2020-11-29 20:48:29,314 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 20:48:29,316 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 20:48:29,316 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 20:48:29,316 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 20:48:29,324 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:48:29" (1/1) ... [2020-11-29 20:48:29,332 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:48:29" (1/1) ... [2020-11-29 20:48:29,352 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 20:48:29,352 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 20:48:29,353 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 20:48:29,353 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 20:48:29,361 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:48:29" (1/1) ... [2020-11-29 20:48:29,362 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:48:29" (1/1) ... [2020-11-29 20:48:29,363 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:48:29" (1/1) ... [2020-11-29 20:48:29,364 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:48:29" (1/1) ... [2020-11-29 20:48:29,368 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:48:29" (1/1) ... [2020-11-29 20:48:29,372 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:48:29" (1/1) ... [2020-11-29 20:48:29,373 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:48:29" (1/1) ... [2020-11-29 20:48:29,375 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 20:48:29,376 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 20:48:29,377 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 20:48:29,377 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 20:48:29,378 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:48:29" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3fe6a996-28d7-41e3-a2fa-7abbb28cb900/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 [2020-11-29 20:48:29,451 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-11-29 20:48:29,451 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-11-29 20:48:29,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 20:48:29,452 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 20:48:29,452 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 20:48:29,452 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 20:48:29,453 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-11-29 20:48:29,453 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-11-29 20:48:29,875 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 20:48:29,875 INFO L298 CfgBuilder]: Removed 7 assume(true) statements. [2020-11-29 20:48:29,878 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:48:29 BoogieIcfgContainer [2020-11-29 20:48:29,878 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 20:48:29,879 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2020-11-29 20:48:29,879 INFO L271 PluginConnector]: Initializing CodeCheck... [2020-11-29 20:48:29,890 INFO L275 PluginConnector]: CodeCheck initialized [2020-11-29 20:48:29,891 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:48:29" (1/1) ... [2020-11-29 20:48:29,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:48:29,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 20:48:29,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 26 states and 37 transitions. [2020-11-29 20:48:29,946 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 37 transitions. [2020-11-29 20:48:29,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-29 20:48:29,953 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 20:48:30,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:48:30,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-29 20:48:30,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:48:30,241 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-11-29 20:48:30,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 20:48:30,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 30 states and 48 transitions. [2020-11-29 20:48:30,408 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 48 transitions. [2020-11-29 20:48:30,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-29 20:48:30,410 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 20:48:30,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:48:30,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 24 conjunts are in the unsatisfiable core [2020-11-29 20:48:30,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:48:30,707 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-11-29 20:48:31,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 20:48:31,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 33 states and 55 transitions. [2020-11-29 20:48:31,273 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 55 transitions. [2020-11-29 20:48:31,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-29 20:48:31,274 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 20:48:31,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:48:31,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 24 conjunts are in the unsatisfiable core [2020-11-29 20:48:31,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:48:31,582 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-11-29 20:48:32,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 20:48:32,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 37 states and 64 transitions. [2020-11-29 20:48:32,744 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 64 transitions. [2020-11-29 20:48:32,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-11-29 20:48:32,747 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 20:48:32,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:48:32,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-29 20:48:32,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:48:32,866 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-11-29 20:48:32,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 20:48:32,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 37 states and 63 transitions. [2020-11-29 20:48:32,923 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 63 transitions. [2020-11-29 20:48:32,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-11-29 20:48:32,924 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 20:48:32,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:48:32,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 25 conjunts are in the unsatisfiable core [2020-11-29 20:48:32,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:48:33,183 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-11-29 20:48:33,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 20:48:33,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 28 states and 39 transitions. [2020-11-29 20:48:33,484 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 39 transitions. [2020-11-29 20:48:33,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-11-29 20:48:33,486 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 20:48:33,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:48:33,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-29 20:48:33,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:48:33,746 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-11-29 20:48:35,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 20:48:35,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 28 states and 38 transitions. [2020-11-29 20:48:35,109 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 38 transitions. [2020-11-29 20:48:35,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-11-29 20:48:35,111 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 20:48:35,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:48:35,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-29 20:48:35,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:48:35,768 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 20:48:35,932 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 9 proven. 13 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-11-29 20:48:38,386 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-11-29 20:48:40,317 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2020-11-29 20:48:41,966 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-11-29 20:48:42,912 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-11-29 20:48:44,834 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-11-29 20:48:49,412 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2020-11-29 20:48:52,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 20:48:52,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 30 states and 40 transitions. [2020-11-29 20:48:52,059 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 40 transitions. [2020-11-29 20:48:52,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-11-29 20:48:52,061 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 20:48:52,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:48:52,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-29 20:48:52,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:48:52,786 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 17 proven. 10 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-11-29 20:49:50,261 WARN L193 SmtUtils]: Spent 27.47 s on a formula simplification that was a NOOP. DAG size: 26 [2020-11-29 20:50:28,005 WARN L193 SmtUtils]: Spent 16.21 s on a formula simplification that was a NOOP. DAG size: 27 [2020-11-29 20:52:05,878 WARN L193 SmtUtils]: Spent 32.66 s on a formula simplification that was a NOOP. DAG size: 27 [2020-11-29 20:53:17,465 WARN L193 SmtUtils]: Spent 15.12 s on a formula simplification that was a NOOP. DAG size: 28 [2020-11-29 20:54:11,435 WARN L193 SmtUtils]: Spent 7.47 s on a formula simplification that was a NOOP. DAG size: 23 [2020-11-29 20:54:36,930 WARN L193 SmtUtils]: Spent 6.30 s on a formula simplification that was a NOOP. DAG size: 24 [2020-11-29 20:55:51,270 WARN L193 SmtUtils]: Spent 19.07 s on a formula simplification that was a NOOP. DAG size: 24 [2020-11-29 20:56:44,041 WARN L193 SmtUtils]: Spent 10.06 s on a formula simplification that was a NOOP. DAG size: 25 [2020-11-29 20:57:52,742 WARN L193 SmtUtils]: Spent 18.01 s on a formula simplification that was a NOOP. DAG size: 21 [2020-11-29 20:58:42,764 WARN L193 SmtUtils]: Spent 10.25 s on a formula simplification that was a NOOP. DAG size: 22 [2020-11-29 20:59:27,826 WARN L193 SmtUtils]: Spent 11.23 s on a formula simplification that was a NOOP. DAG size: 22 [2020-11-29 21:00:06,769 WARN L193 SmtUtils]: Spent 12.34 s on a formula simplification that was a NOOP. DAG size: 23 [2020-11-29 21:00:33,863 WARN L193 SmtUtils]: Spent 1.24 s on a formula simplification that was a NOOP. DAG size: 17 [2020-11-29 21:01:08,063 WARN L193 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2020-11-29 21:01:35,737 WARN L193 SmtUtils]: Spent 2.21 s on a formula simplification that was a NOOP. DAG size: 19 [2020-11-29 21:01:44,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 21:01:44,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 24 states and 32 transitions. [2020-11-29 21:01:44,733 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 32 transitions. [2020-11-29 21:01:44,734 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-29 21:01:44,734 WARN L425 CodeCheckObserver]: This Program is SAFE, Check terminated with 9 iterations. [2020-11-29 21:01:44,742 INFO L765 CodeCheckObserver]: All specifications hold 1 specifications checked. All of them hold [2020-11-29 21:01:45,357 WARN L193 SmtUtils]: Spent 586.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 1 [2020-11-29 21:01:45,574 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 1 [2020-11-29 21:01:48,312 WARN L193 SmtUtils]: Spent 2.58 s on a formula simplification. DAG size of input: 30 DAG size of output: 3 [2020-11-29 21:01:48,373 INFO L569 CodeCheckObserver]: Invariant with dag size 1 [2020-11-29 21:01:48,376 INFO L569 CodeCheckObserver]: Invariant with dag size 1 [2020-11-29 21:01:48,377 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 29.11 09:01:48 ImpRootNode [2020-11-29 21:01:48,377 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2020-11-29 21:01:48,377 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 21:01:48,378 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 21:01:48,378 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 21:01:48,378 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:48:29" (3/4) ... [2020-11-29 21:01:48,382 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-29 21:01:48,387 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2020-11-29 21:01:48,387 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2020-11-29 21:01:48,391 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2020-11-29 21:01:48,392 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2020-11-29 21:01:48,392 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-29 21:01:48,392 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 21:01:48,440 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_3fe6a996-28d7-41e3-a2fa-7abbb28cb900/bin/ukojak/witness.graphml [2020-11-29 21:01:48,441 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 21:01:48,442 INFO L168 Benchmark]: Toolchain (without parser) took 799375.22 ms. Allocated memory was 100.7 MB in the beginning and 161.5 MB in the end (delta: 60.8 MB). Free memory was 73.7 MB in the beginning and 90.3 MB in the end (delta: -16.6 MB). Peak memory consumption was 44.8 MB. Max. memory is 16.1 GB. [2020-11-29 21:01:48,442 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 100.7 MB. Free memory is still 60.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 21:01:48,443 INFO L168 Benchmark]: CACSL2BoogieTranslator took 244.74 ms. Allocated memory is still 100.7 MB. Free memory was 73.5 MB in the beginning and 75.8 MB in the end (delta: -2.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-29 21:01:48,443 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.03 ms. Allocated memory is still 100.7 MB. Free memory was 75.8 MB in the beginning and 74.3 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 21:01:48,444 INFO L168 Benchmark]: Boogie Preprocessor took 23.15 ms. Allocated memory is still 100.7 MB. Free memory was 74.3 MB in the beginning and 73.2 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 21:01:48,444 INFO L168 Benchmark]: RCFGBuilder took 501.47 ms. Allocated memory is still 100.7 MB. Free memory was 73.2 MB in the beginning and 54.8 MB in the end (delta: 18.3 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2020-11-29 21:01:48,445 INFO L168 Benchmark]: CodeCheck took 798498.33 ms. Allocated memory was 100.7 MB in the beginning and 161.5 MB in the end (delta: 60.8 MB). Free memory was 54.8 MB in the beginning and 93.5 MB in the end (delta: -38.6 MB). Peak memory consumption was 23.5 MB. Max. memory is 16.1 GB. [2020-11-29 21:01:48,445 INFO L168 Benchmark]: Witness Printer took 63.24 ms. Allocated memory is still 161.5 MB. Free memory was 93.5 MB in the beginning and 90.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-29 21:01:48,448 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 3 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 794.8s, OverallIterations: 9, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 5544 SDtfs, 1128 SDslu, 1288 SDs, 0 SdLazy, 12836 SolverSat, 3794 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 52.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2387 GetRequests, 2246 SyntacticMatches, 23 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5260 ImplicationChecksByTransitivity, 742.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 286 NumberOfCodeBlocks, 286 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 278 ConstructedInterpolants, 0 QuantifiedInterpolants, 28107 SizeOfPredicates, 30 NumberOfNonLiveVariables, 955 ConjunctsInSsa, 121 ConjunctsInUnsatCore, 8 InterpolantComputations, 4 PerfectInterpolantSequences, 267/298 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 - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 57]: Loop Invariant Derived loop invariant: 1 * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 100.7 MB. Free memory is still 60.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 244.74 ms. Allocated memory is still 100.7 MB. Free memory was 73.5 MB in the beginning and 75.8 MB in the end (delta: -2.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 36.03 ms. Allocated memory is still 100.7 MB. Free memory was 75.8 MB in the beginning and 74.3 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 23.15 ms. Allocated memory is still 100.7 MB. Free memory was 74.3 MB in the beginning and 73.2 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 501.47 ms. Allocated memory is still 100.7 MB. Free memory was 73.2 MB in the beginning and 54.8 MB in the end (delta: 18.3 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * CodeCheck took 798498.33 ms. Allocated memory was 100.7 MB in the beginning and 161.5 MB in the end (delta: 60.8 MB). Free memory was 54.8 MB in the beginning and 93.5 MB in the end (delta: -38.6 MB). Peak memory consumption was 23.5 MB. Max. memory is 16.1 GB. * Witness Printer took 63.24 ms. Allocated memory is still 161.5 MB. Free memory was 93.5 MB in the beginning and 90.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. RESULT: Ultimate proved your program to be correct! [MP z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Forcibly destroying the process Received shutdown request...