./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector/gcd_4.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_5a362ce1-c48d-4831-b9b1-147991398c8f/bin/ukojak/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_5a362ce1-c48d-4831-b9b1-147991398c8f/bin/ukojak/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_5a362ce1-c48d-4831-b9b1-147991398c8f/bin/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_5a362ce1-c48d-4831-b9b1-147991398c8f/bin/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/bitvector/gcd_4.c -s /tmp/vcloud-vcloud-master/worker/run_dir_5a362ce1-c48d-4831-b9b1-147991398c8f/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_5a362ce1-c48d-4831-b9b1-147991398c8f/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 9c20edfd7ede05443471560aa2c7be34d4e8c171 .......................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 04:40:55,362 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 04:40:55,365 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 04:40:55,432 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 04:40:55,444 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 04:40:55,447 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 04:40:55,449 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 04:40:55,451 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 04:40:55,454 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 04:40:55,455 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 04:40:55,456 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 04:40:55,458 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 04:40:55,458 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 04:40:55,460 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 04:40:55,461 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 04:40:55,463 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 04:40:55,464 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 04:40:55,465 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 04:40:55,468 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 04:40:55,471 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 04:40:55,477 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 04:40:55,483 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 04:40:55,485 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 04:40:55,489 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 04:40:55,493 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 04:40:55,497 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 04:40:55,498 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 04:40:55,499 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 04:40:55,501 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 04:40:55,502 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 04:40:55,503 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 04:40:55,504 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 04:40:55,506 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 04:40:55,508 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 04:40:55,509 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 04:40:55,510 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 04:40:55,511 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 04:40:55,511 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 04:40:55,511 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 04:40:55,513 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 04:40:55,514 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 04:40:55,517 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_5a362ce1-c48d-4831-b9b1-147991398c8f/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf [2020-11-28 04:40:55,560 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 04:40:55,561 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 04:40:55,562 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 04:40:55,563 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2020-11-28 04:40:55,563 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 04:40:55,564 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 04:40:55,564 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 04:40:55,564 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 04:40:55,564 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 04:40:55,565 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 04:40:55,566 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 04:40:55,566 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 04:40:55,566 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 04:40:55,566 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 04:40:55,567 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 04:40:55,567 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 04:40:55,567 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 04:40:55,567 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 04:40:55,568 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2020-11-28 04:40:55,568 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2020-11-28 04:40:55,568 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 04:40:55,568 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 04:40:55,569 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2020-11-28 04:40:55,569 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 04:40:55,569 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 04:40:55,569 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 04:40:55,570 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2020-11-28 04:40:55,570 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 04:40:55,570 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 04:40:55,570 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_5a362ce1-c48d-4831-b9b1-147991398c8f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_5a362ce1-c48d-4831-b9b1-147991398c8f/bin/ukojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9c20edfd7ede05443471560aa2c7be34d4e8c171 [2020-11-28 04:40:55,832 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 04:40:55,863 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 04:40:55,868 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 04:40:55,870 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 04:40:55,871 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 04:40:55,872 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_5a362ce1-c48d-4831-b9b1-147991398c8f/bin/ukojak/../../sv-benchmarks/c/bitvector/gcd_4.c [2020-11-28 04:40:55,956 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5a362ce1-c48d-4831-b9b1-147991398c8f/bin/ukojak/data/9043025a6/a30480f907e94401bbb169f6e9af382c/FLAG10e4744fd [2020-11-28 04:40:56,427 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 04:40:56,428 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_5a362ce1-c48d-4831-b9b1-147991398c8f/sv-benchmarks/c/bitvector/gcd_4.c [2020-11-28 04:40:56,442 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5a362ce1-c48d-4831-b9b1-147991398c8f/bin/ukojak/data/9043025a6/a30480f907e94401bbb169f6e9af382c/FLAG10e4744fd [2020-11-28 04:40:56,829 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_5a362ce1-c48d-4831-b9b1-147991398c8f/bin/ukojak/data/9043025a6/a30480f907e94401bbb169f6e9af382c [2020-11-28 04:40:56,832 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 04:40:56,833 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 04:40:56,835 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 04:40:56,835 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 04:40:56,838 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 04:40:56,839 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:40:56" (1/1) ... [2020-11-28 04:40:56,841 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@519959a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:40:56, skipping insertion in model container [2020-11-28 04:40:56,841 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:40:56" (1/1) ... [2020-11-28 04:40:56,850 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 04:40:56,864 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 04:40:57,095 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 04:40:57,103 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 04:40:57,120 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 04:40:57,134 INFO L208 MainTranslator]: Completed translation [2020-11-28 04:40:57,134 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:40:57 WrapperNode [2020-11-28 04:40:57,135 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 04:40:57,136 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 04:40:57,136 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 04:40:57,136 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 04:40:57,144 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:40:57" (1/1) ... [2020-11-28 04:40:57,151 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:40:57" (1/1) ... [2020-11-28 04:40:57,168 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 04:40:57,169 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 04:40:57,169 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 04:40:57,170 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 04:40:57,178 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:40:57" (1/1) ... [2020-11-28 04:40:57,178 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:40:57" (1/1) ... [2020-11-28 04:40:57,180 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:40:57" (1/1) ... [2020-11-28 04:40:57,180 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:40:57" (1/1) ... [2020-11-28 04:40:57,184 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:40:57" (1/1) ... [2020-11-28 04:40:57,188 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:40:57" (1/1) ... [2020-11-28 04:40:57,189 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:40:57" (1/1) ... [2020-11-28 04:40:57,191 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 04:40:57,192 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 04:40:57,192 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 04:40:57,192 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 04:40:57,193 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:40:57" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5a362ce1-c48d-4831-b9b1-147991398c8f/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 04:40:57,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 04:40:57,259 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 04:40:57,259 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 04:40:57,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 04:40:57,260 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-11-28 04:40:57,260 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-11-28 04:40:57,685 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 04:40:57,685 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-28 04:40:57,687 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:40:57 BoogieIcfgContainer [2020-11-28 04:40:57,688 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 04:40:57,688 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2020-11-28 04:40:57,688 INFO L271 PluginConnector]: Initializing CodeCheck... [2020-11-28 04:40:57,696 INFO L275 PluginConnector]: CodeCheck initialized [2020-11-28 04:40:57,696 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:40:57" (1/1) ... [2020-11-28 04:40:57,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 04:40:57,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:40:57,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 15 states and 19 transitions. [2020-11-28 04:40:57,739 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 19 transitions. [2020-11-28 04:40:57,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-28 04:40:57,741 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:40:57,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:40:57,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 04:40:57,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 04:40:57,899 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-28 04:40:57,899 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 04:40:57,953 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 04:40:57,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:40:57,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 15 states and 17 transitions. [2020-11-28 04:40:57,985 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2020-11-28 04:40:57,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-28 04:40:57,985 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:40:58,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:40:58,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 04:40:58,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 04:40:58,046 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-28 04:40:58,046 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 04:40:58,073 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 04:40:58,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:40:58,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 16 states and 20 transitions. [2020-11-28 04:40:58,187 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2020-11-28 04:40:58,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-28 04:40:58,187 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:40:58,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:40:58,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-28 04:40:58,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 04:40:58,276 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-28 04:40:58,279 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 04:40:58,338 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 04:40:58,369 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 04:40:58,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:40:58,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 17 states and 23 transitions. [2020-11-28 04:40:58,535 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 23 transitions. [2020-11-28 04:40:58,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 04:40:58,536 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:40:58,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:40:58,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 15 conjunts are in the unsatisfiable core [2020-11-28 04:40:58,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 04:40:58,616 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-28 04:40:58,616 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 04:40:58,626 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 3, 1] term [2020-11-28 04:40:58,628 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 04:40:58,676 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 04:40:58,696 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 04:40:58,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:40:58,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 18 states and 25 transitions. [2020-11-28 04:40:58,852 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 25 transitions. [2020-11-28 04:40:58,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 04:40:58,854 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:40:58,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:40:58,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 16 conjunts are in the unsatisfiable core [2020-11-28 04:40:58,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 04:40:58,926 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-28 04:40:58,927 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 04:40:58,931 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 3, 1] term [2020-11-28 04:40:58,931 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 04:40:58,945 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 3, 1] term [2020-11-28 04:40:58,947 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 04:40:58,999 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 04:40:59,014 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 04:40:59,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:40:59,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 19 states and 27 transitions. [2020-11-28 04:40:59,226 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 27 transitions. [2020-11-28 04:40:59,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-28 04:40:59,227 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:40:59,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:40:59,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 15 conjunts are in the unsatisfiable core [2020-11-28 04:40:59,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 04:40:59,438 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 04:41:00,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:41:00,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 24 states and 41 transitions. [2020-11-28 04:41:00,121 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 41 transitions. [2020-11-28 04:41:00,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-28 04:41:00,122 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:41:00,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:41:00,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 27 conjunts are in the unsatisfiable core [2020-11-28 04:41:00,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 04:41:00,881 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 04:41:02,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:41:02,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 22 states and 25 transitions. [2020-11-28 04:41:02,416 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2020-11-28 04:41:02,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-28 04:41:02,418 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:41:02,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:41:02,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 27 conjunts are in the unsatisfiable core [2020-11-28 04:41:02,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 04:41:03,465 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 04:41:10,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:41:10,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 22 states and 24 transitions. [2020-11-28 04:41:10,885 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2020-11-28 04:41:10,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-28 04:41:10,885 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:41:10,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:41:10,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 22 conjunts are in the unsatisfiable core [2020-11-28 04:41:10,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 04:41:12,392 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-28 04:41:14,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:41:14,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 18 states and 19 transitions. [2020-11-28 04:41:14,331 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2020-11-28 04:41:14,332 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 04:41:14,332 WARN L425 CodeCheckObserver]: This Program is SAFE, Check terminated with 10 iterations. [2020-11-28 04:41:14,339 INFO L765 CodeCheckObserver]: All specifications hold 1 specifications checked. All of them hold [2020-11-28 04:41:14,578 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2020-11-28 04:41:14,646 INFO L569 CodeCheckObserver]: Invariant with dag size 12 [2020-11-28 04:41:14,655 INFO L569 CodeCheckObserver]: Invariant with dag size 34 [2020-11-28 04:41:14,665 INFO L569 CodeCheckObserver]: Invariant with dag size 1 [2020-11-28 04:41:14,666 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 28.11 04:41:14 ImpRootNode [2020-11-28 04:41:14,666 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2020-11-28 04:41:14,666 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 04:41:14,670 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 04:41:14,671 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 04:41:14,671 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:40:57" (3/4) ... [2020-11-28 04:41:14,674 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 04:41:14,680 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2020-11-28 04:41:14,684 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-11-28 04:41:14,685 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-11-28 04:41:14,685 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-28 04:41:14,685 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 04:41:14,710 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\result + 3 * y == 63 && y == 18) && x == 63 [2020-11-28 04:41:14,741 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_5a362ce1-c48d-4831-b9b1-147991398c8f/bin/ukojak/witness.graphml [2020-11-28 04:41:14,741 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 04:41:14,743 INFO L168 Benchmark]: Toolchain (without parser) took 17909.00 ms. Allocated memory was 92.3 MB in the beginning and 136.3 MB in the end (delta: 44.0 MB). Free memory was 62.9 MB in the beginning and 47.8 MB in the end (delta: 15.1 MB). Peak memory consumption was 58.6 MB. Max. memory is 16.1 GB. [2020-11-28 04:41:14,743 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 92.3 MB. Free memory was 52.0 MB in the beginning and 51.9 MB in the end (delta: 38.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 04:41:14,744 INFO L168 Benchmark]: CACSL2BoogieTranslator took 300.10 ms. Allocated memory is still 92.3 MB. Free memory was 62.6 MB in the beginning and 70.5 MB in the end (delta: -7.9 MB). Peak memory consumption was 9.7 MB. Max. memory is 16.1 GB. [2020-11-28 04:41:14,745 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.93 ms. Allocated memory is still 92.3 MB. Free memory was 70.5 MB in the beginning and 69.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 04:41:14,745 INFO L168 Benchmark]: Boogie Preprocessor took 21.88 ms. Allocated memory is still 92.3 MB. Free memory was 69.1 MB in the beginning and 68.1 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 04:41:14,746 INFO L168 Benchmark]: RCFGBuilder took 495.73 ms. Allocated memory is still 92.3 MB. Free memory was 68.1 MB in the beginning and 48.9 MB in the end (delta: 19.2 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2020-11-28 04:41:14,747 INFO L168 Benchmark]: CodeCheck took 16977.56 ms. Allocated memory was 92.3 MB in the beginning and 136.3 MB in the end (delta: 44.0 MB). Free memory was 48.9 MB in the beginning and 50.9 MB in the end (delta: -2.1 MB). Peak memory consumption was 42.6 MB. Max. memory is 16.1 GB. [2020-11-28 04:41:14,747 INFO L168 Benchmark]: Witness Printer took 75.41 ms. Allocated memory is still 136.3 MB. Free memory was 50.9 MB in the beginning and 47.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 04:41:14,752 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, 15 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 16.6s, OverallIterations: 10, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2624 SDtfs, 1096 SDslu, 0 SDs, 0 SdLazy, 8450 SolverSat, 2542 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1081 GetRequests, 921 SyntacticMatches, 24 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9218 ImplicationChecksByTransitivity, 14.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 3.7s InterpolantComputationTime, 111 NumberOfCodeBlocks, 111 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 102 ConstructedInterpolants, 0 QuantifiedInterpolants, 6691 SizeOfPredicates, 59 NumberOfNonLiveVariables, 607 ConjunctsInSsa, 140 ConjunctsInUnsatCore, 9 InterpolantComputations, 2 PerfectInterpolantSequences, 10/75 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: 3]: 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: 12]: Loop Invariant Derived loop invariant: (\result + 3 * y == 63 && y == 18) && x == 63 - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: (((((((y == 18 && a + 54 == x) && b + 2 * x == 126) && x == 63) || (((y == 18 && x == 63) && a == 63) && b == 18)) || (((y == 18 && x == a + 18) && x == 63) && b == 18)) || (((y == 18 && a + 54 == x) && x == 63) && 4 * y == b + 63)) || (((y == 18 && a + 54 == x) && x == 63) && b == 18)) || (((y == 18 && a + 2 * y == 63) && x == 63) && b == 18) - InvariantResult [Line: 45]: Loop Invariant Derived loop invariant: 1 * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 92.3 MB. Free memory was 52.0 MB in the beginning and 51.9 MB in the end (delta: 38.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 300.10 ms. Allocated memory is still 92.3 MB. Free memory was 62.6 MB in the beginning and 70.5 MB in the end (delta: -7.9 MB). Peak memory consumption was 9.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 32.93 ms. Allocated memory is still 92.3 MB. Free memory was 70.5 MB in the beginning and 69.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 21.88 ms. Allocated memory is still 92.3 MB. Free memory was 69.1 MB in the beginning and 68.1 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 495.73 ms. Allocated memory is still 92.3 MB. Free memory was 68.1 MB in the beginning and 48.9 MB in the end (delta: 19.2 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * CodeCheck took 16977.56 ms. Allocated memory was 92.3 MB in the beginning and 136.3 MB in the end (delta: 44.0 MB). Free memory was 48.9 MB in the beginning and 50.9 MB in the end (delta: -2.1 MB). Peak memory consumption was 42.6 MB. Max. memory is 16.1 GB. * Witness Printer took 75.41 ms. Allocated memory is still 136.3 MB. Free memory was 50.9 MB in the beginning and 47.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. RESULT: Ultimate proved your program to be correct! Received shutdown request...