./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 678e0110 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_4bda8c3c-f0ca-4112-a3f2-e3a95133e736/bin/ukojak/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_4bda8c3c-f0ca-4112-a3f2-e3a95133e736/bin/ukojak/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_4bda8c3c-f0ca-4112-a3f2-e3a95133e736/bin/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_4bda8c3c-f0ca-4112-a3f2-e3a95133e736/bin/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/bitvector/gcd_4.c -s /tmp/vcloud-vcloud-master/worker/run_dir_4bda8c3c-f0ca-4112-a3f2-e3a95133e736/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_4bda8c3c-f0ca-4112-a3f2-e3a95133e736/bin/ukojak --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Kojak --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9918b49e0d76e4ce36b6a6760021b33460a8ae9b ....................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-678e011 [2019-11-19 21:36:27,982 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-19 21:36:27,983 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-19 21:36:27,997 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-19 21:36:27,997 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-19 21:36:27,998 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-19 21:36:28,000 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-19 21:36:28,008 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-19 21:36:28,012 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-19 21:36:28,016 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-19 21:36:28,017 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-19 21:36:28,018 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-19 21:36:28,018 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-19 21:36:28,020 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-19 21:36:28,021 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-19 21:36:28,022 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-19 21:36:28,023 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-19 21:36:28,024 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-19 21:36:28,026 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-19 21:36:28,029 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-19 21:36:28,032 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-19 21:36:28,034 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-19 21:36:28,036 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-19 21:36:28,037 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-19 21:36:28,041 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-19 21:36:28,041 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-19 21:36:28,041 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-19 21:36:28,042 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-19 21:36:28,043 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-19 21:36:28,044 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-19 21:36:28,044 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-19 21:36:28,045 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-19 21:36:28,045 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-19 21:36:28,046 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-19 21:36:28,047 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-19 21:36:28,047 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-19 21:36:28,047 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-19 21:36:28,048 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-19 21:36:28,048 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-19 21:36:28,048 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-19 21:36:28,050 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-19 21:36:28,050 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_4bda8c3c-f0ca-4112-a3f2-e3a95133e736/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf [2019-11-19 21:36:28,073 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-19 21:36:28,073 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-19 21:36:28,074 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-19 21:36:28,074 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2019-11-19 21:36:28,074 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-19 21:36:28,075 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-19 21:36:28,075 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-19 21:36:28,075 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-19 21:36:28,075 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-19 21:36:28,075 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-19 21:36:28,076 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-19 21:36:28,076 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-19 21:36:28,076 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-19 21:36:28,076 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-19 21:36:28,076 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-19 21:36:28,076 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-19 21:36:28,077 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-19 21:36:28,077 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-19 21:36:28,077 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2019-11-19 21:36:28,077 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2019-11-19 21:36:28,077 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-19 21:36:28,078 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-19 21:36:28,078 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2019-11-19 21:36:28,078 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-19 21:36:28,078 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-19 21:36:28,078 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-19 21:36:28,079 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2019-11-19 21:36:28,079 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-19 21:36:28,079 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-19 21:36:28,079 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_4bda8c3c-f0ca-4112-a3f2-e3a95133e736/bin/ukojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9918b49e0d76e4ce36b6a6760021b33460a8ae9b [2019-11-19 21:36:28,252 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-19 21:36:28,267 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-19 21:36:28,269 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-19 21:36:28,271 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-19 21:36:28,272 INFO L275 PluginConnector]: CDTParser initialized [2019-11-19 21:36:28,273 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_4bda8c3c-f0ca-4112-a3f2-e3a95133e736/bin/ukojak/../../sv-benchmarks/c/bitvector/gcd_4.c [2019-11-19 21:36:28,334 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4bda8c3c-f0ca-4112-a3f2-e3a95133e736/bin/ukojak/data/8ce095e5d/899f56b008264428855cbc9338ae8f0e/FLAG6d10c3a0f [2019-11-19 21:36:28,676 INFO L306 CDTParser]: Found 1 translation units. [2019-11-19 21:36:28,677 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_4bda8c3c-f0ca-4112-a3f2-e3a95133e736/sv-benchmarks/c/bitvector/gcd_4.c [2019-11-19 21:36:28,682 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4bda8c3c-f0ca-4112-a3f2-e3a95133e736/bin/ukojak/data/8ce095e5d/899f56b008264428855cbc9338ae8f0e/FLAG6d10c3a0f [2019-11-19 21:36:29,059 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_4bda8c3c-f0ca-4112-a3f2-e3a95133e736/bin/ukojak/data/8ce095e5d/899f56b008264428855cbc9338ae8f0e [2019-11-19 21:36:29,062 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-19 21:36:29,064 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-19 21:36:29,066 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-19 21:36:29,066 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-19 21:36:29,069 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-19 21:36:29,070 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 09:36:29" (1/1) ... [2019-11-19 21:36:29,073 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ff4b1a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:36:29, skipping insertion in model container [2019-11-19 21:36:29,073 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 09:36:29" (1/1) ... [2019-11-19 21:36:29,079 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-19 21:36:29,098 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-19 21:36:29,262 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 21:36:29,267 INFO L188 MainTranslator]: Completed pre-run [2019-11-19 21:36:29,340 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 21:36:29,355 INFO L192 MainTranslator]: Completed translation [2019-11-19 21:36:29,355 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:36:29 WrapperNode [2019-11-19 21:36:29,356 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-19 21:36:29,356 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-19 21:36:29,356 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-19 21:36:29,357 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-19 21:36:29,364 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:36:29" (1/1) ... [2019-11-19 21:36:29,371 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:36:29" (1/1) ... [2019-11-19 21:36:29,390 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-19 21:36:29,391 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-19 21:36:29,391 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-19 21:36:29,391 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-19 21:36:29,399 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:36:29" (1/1) ... [2019-11-19 21:36:29,405 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:36:29" (1/1) ... [2019-11-19 21:36:29,407 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:36:29" (1/1) ... [2019-11-19 21:36:29,407 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:36:29" (1/1) ... [2019-11-19 21:36:29,412 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:36:29" (1/1) ... [2019-11-19 21:36:29,417 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:36:29" (1/1) ... [2019-11-19 21:36:29,422 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:36:29" (1/1) ... [2019-11-19 21:36:29,428 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-19 21:36:29,428 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-19 21:36:29,428 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-19 21:36:29,428 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-19 21:36:29,429 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:36:29" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4bda8c3c-f0ca-4112-a3f2-e3a95133e736/bin/ukojak/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2019-11-19 21:36:29,497 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-19 21:36:29,497 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-19 21:36:29,497 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-11-19 21:36:29,498 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-11-19 21:36:29,780 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-19 21:36:29,781 INFO L285 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-19 21:36:29,782 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:36:29 BoogieIcfgContainer [2019-11-19 21:36:29,782 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-19 21:36:29,783 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2019-11-19 21:36:29,783 INFO L271 PluginConnector]: Initializing CodeCheck... [2019-11-19 21:36:29,792 INFO L275 PluginConnector]: CodeCheck initialized [2019-11-19 21:36:29,796 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:36:29" (1/1) ... [2019-11-19 21:36:29,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 21:36:29,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-11-19 21:36:29,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 15 states and 19 transitions. [2019-11-19 21:36:29,853 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 19 transitions. [2019-11-19 21:36:29,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-19 21:36:29,855 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-11-19 21:36:29,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 21:36:29,939 INFO L255 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-19 21:36:29,943 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 21:36:29,966 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 21:36:30,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 21:36:30,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-11-19 21:36:30,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 15 states and 17 transitions. [2019-11-19 21:36:30,046 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2019-11-19 21:36:30,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-19 21:36:30,046 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-11-19 21:36:30,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 21:36:30,063 INFO L255 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-19 21:36:30,064 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 21:36:30,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 21:36:30,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-11-19 21:36:30,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 16 states and 20 transitions. [2019-11-19 21:36:30,172 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2019-11-19 21:36:30,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-19 21:36:30,173 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-11-19 21:36:30,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 21:36:30,194 INFO L255 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-19 21:36:30,198 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 21:36:30,202 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 21:36:30,218 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 21:36:30,231 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 21:36:30,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-11-19 21:36:30,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 17 states and 23 transitions. [2019-11-19 21:36:30,296 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 23 transitions. [2019-11-19 21:36:30,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-19 21:36:30,299 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-11-19 21:36:30,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 21:36:30,321 INFO L255 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 13 conjunts are in the unsatisfiable core [2019-11-19 21:36:30,322 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 21:36:30,326 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 21:36:30,339 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 21:36:30,373 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 21:36:30,386 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 21:36:30,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-11-19 21:36:30,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 18 states and 25 transitions. [2019-11-19 21:36:30,520 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 25 transitions. [2019-11-19 21:36:30,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-19 21:36:30,521 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-11-19 21:36:30,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 21:36:30,556 INFO L255 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 14 conjunts are in the unsatisfiable core [2019-11-19 21:36:30,557 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 21:36:30,562 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 21:36:30,577 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 21:36:30,580 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 21:36:30,626 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 21:36:30,639 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 21:36:30,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-11-19 21:36:30,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 19 states and 27 transitions. [2019-11-19 21:36:30,794 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 27 transitions. [2019-11-19 21:36:30,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-19 21:36:30,795 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-11-19 21:36:30,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 21:36:30,826 INFO L255 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 17 conjunts are in the unsatisfiable core [2019-11-19 21:36:30,828 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 21:36:30,945 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 21:36:31,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-11-19 21:36:31,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 24 states and 40 transitions. [2019-11-19 21:36:31,446 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 40 transitions. [2019-11-19 21:36:31,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-19 21:36:31,447 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-11-19 21:36:31,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 21:36:31,494 WARN L253 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 28 conjunts are in the unsatisfiable core [2019-11-19 21:36:31,495 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 21:36:31,994 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 21:36:32,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-11-19 21:36:32,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 22 states and 25 transitions. [2019-11-19 21:36:32,836 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2019-11-19 21:36:32,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-19 21:36:32,838 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-11-19 21:36:32,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 21:36:32,867 WARN L253 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 33 conjunts are in the unsatisfiable core [2019-11-19 21:36:32,868 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 21:36:33,663 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 21:36:35,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-11-19 21:36:35,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 24 states and 27 transitions. [2019-11-19 21:36:35,573 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2019-11-19 21:36:35,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-11-19 21:36:35,574 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-11-19 21:36:35,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 21:36:35,606 WARN L253 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 33 conjunts are in the unsatisfiable core [2019-11-19 21:36:35,607 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 21:36:35,721 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-19 21:36:35,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-11-19 21:36:35,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 18 states and 19 transitions. [2019-11-19 21:36:35,851 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2019-11-19 21:36:35,851 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-19 21:36:35,852 WARN L425 CodeCheckObserver]: This Program is SAFE, Check terminated with 10 iterations. [2019-11-19 21:36:35,860 INFO L765 CodeCheckObserver]: All specifications hold 1 specifications checked. All of them hold [2019-11-19 21:36:35,949 INFO L569 CodeCheckObserver]: Invariant with dag size 15 [2019-11-19 21:36:35,960 INFO L569 CodeCheckObserver]: Invariant with dag size 38 [2019-11-19 21:36:35,970 INFO L569 CodeCheckObserver]: Invariant with dag size 1 [2019-11-19 21:36:35,979 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 19.11 09:36:35 ImpRootNode [2019-11-19 21:36:35,979 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2019-11-19 21:36:35,979 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-19 21:36:35,979 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-19 21:36:35,980 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-19 21:36:35,980 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:36:29" (3/4) ... [2019-11-19 21:36:35,983 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-19 21:36:35,990 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2019-11-19 21:36:35,995 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2019-11-19 21:36:35,995 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2019-11-19 21:36:35,996 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-19 21:36:36,027 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (y == 18 && 2 * x == 7 * y) && x == \result + 3 * y [2019-11-19 21:36:36,066 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_4bda8c3c-f0ca-4112-a3f2-e3a95133e736/bin/ukojak/witness.graphml [2019-11-19 21:36:36,066 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-19 21:36:36,069 INFO L168 Benchmark]: Toolchain (without parser) took 7004.16 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 187.2 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -153.6 MB). Peak memory consumption was 33.6 MB. Max. memory is 11.5 GB. [2019-11-19 21:36:36,069 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 21:36:36,070 INFO L168 Benchmark]: CACSL2BoogieTranslator took 289.80 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.7 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -190.8 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. [2019-11-19 21:36:36,071 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.18 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 21:36:36,073 INFO L168 Benchmark]: Boogie Preprocessor took 37.20 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2019-11-19 21:36:36,075 INFO L168 Benchmark]: RCFGBuilder took 354.17 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. [2019-11-19 21:36:36,075 INFO L168 Benchmark]: CodeCheck took 6196.28 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 42.5 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 4.2 MB). Peak memory consumption was 46.6 MB. Max. memory is 11.5 GB. [2019-11-19 21:36:36,076 INFO L168 Benchmark]: Witness Printer took 87.31 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 11.5 GB. [2019-11-19 21:36:36,079 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck: - StatisticsResult: Ultimate CodeCheck benchmark data CFG has 2 procedures, 15 locations, 1 error locations. Result: SAFE, OverallTime: 6.0s, OverallIterations: 10, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 2608 SDtfs, 872 SDslu, 8 SDs, 0 SdLazy, 7870 SolverSat, 2414 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1117 GetRequests, 976 SyntacticMatches, 23 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6524 ImplicationChecksByTransitivity, 4.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 111 NumberOfCodeBlocks, 111 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 102 ConstructedInterpolants, 0 QuantifiedInterpolants, 8900 SizeOfPredicates, 57 NumberOfNonLiveVariables, 346 ConjunctsInSsa, 161 ConjunctsInUnsatCore, 9 InterpolantComputations, 2 PerfectInterpolantSequences, 5/75 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: 6]: 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: 10]: Loop Invariant Derived loop invariant: (y == 18 && 2 * x == 7 * y) && x == \result + 3 * y - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: (((((((b == y && x == 63) && y == 18) && a + 2 * y == x) || (((b == y && x == 63) && a + y == x) && y == 18)) || (((b + x == 4 * y && x == 63) && a + 3 * y == x) && y == 18)) || (((7 * y == b + 2 * x && x == 63) && a + 3 * y == x) && y == 18)) || (((x == 3 * y + a && b == y) && x == 63) && y == 18)) || (((b == y && x == 63) && a == x) && y == 18) - InvariantResult [Line: 43]: Loop Invariant Derived loop invariant: 1 * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 289.80 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.7 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -190.8 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 34.18 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 37.20 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 354.17 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. * CodeCheck took 6196.28 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 42.5 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 4.2 MB). Peak memory consumption was 46.6 MB. Max. memory is 11.5 GB. * Witness Printer took 87.31 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 11.5 GB. RESULT: Ultimate proved your program to be correct! Received shutdown request...