./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ed493b1-1b28-41fb-88f8-130a0ecf83ee/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ed493b1-1b28-41fb-88f8-130a0ecf83ee/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ed493b1-1b28-41fb-88f8-130a0ecf83ee/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ed493b1-1b28-41fb-88f8-130a0ecf83ee/bin/uautomizer-j4sWxH34Be/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ed493b1-1b28-41fb-88f8-130a0ecf83ee/bin/uautomizer-j4sWxH34Be/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ed493b1-1b28-41fb-88f8-130a0ecf83ee/bin/uautomizer-j4sWxH34Be --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 626f3da6fd18561761a79d5d72b6e4952ec90284e3abc32807b89f761ebfb898 .................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-21 18:59:27,320 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 18:59:27,322 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 18:59:27,373 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 18:59:27,374 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 18:59:27,379 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 18:59:27,381 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 18:59:27,385 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 18:59:27,388 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 18:59:27,396 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 18:59:27,397 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 18:59:27,399 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 18:59:27,399 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 18:59:27,400 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 18:59:27,401 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 18:59:27,403 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 18:59:27,404 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 18:59:27,404 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 18:59:27,406 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 18:59:27,409 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 18:59:27,410 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 18:59:27,411 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 18:59:27,413 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 18:59:27,414 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 18:59:27,417 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 18:59:27,418 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 18:59:27,418 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 18:59:27,419 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 18:59:27,419 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 18:59:27,420 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 18:59:27,421 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 18:59:27,422 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 18:59:27,422 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 18:59:27,423 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 18:59:27,424 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 18:59:27,425 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 18:59:27,425 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 18:59:27,426 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 18:59:27,426 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 18:59:27,427 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 18:59:27,428 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 18:59:27,429 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ed493b1-1b28-41fb-88f8-130a0ecf83ee/bin/uautomizer-j4sWxH34Be/config/svcomp-Overflow-64bit-Automizer_Default.epf [2021-10-21 18:59:27,458 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 18:59:27,458 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 18:59:27,458 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 18:59:27,458 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 18:59:27,459 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 18:59:27,460 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 18:59:27,460 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 18:59:27,460 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 18:59:27,460 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-21 18:59:27,460 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 18:59:27,461 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 18:59:27,461 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-21 18:59:27,461 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 18:59:27,461 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-21 18:59:27,461 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-21 18:59:27,461 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 18:59:27,462 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 18:59:27,462 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-21 18:59:27,462 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 18:59:27,462 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 18:59:27,462 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 18:59:27,463 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 18:59:27,463 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 18:59:27,463 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 18:59:27,463 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-21 18:59:27,463 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 18:59:27,464 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-21 18:59:27,464 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-21 18:59:27,464 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 18:59:27,464 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_worker_vcloud-master_on_vcloud-master/run_dir_9ed493b1-1b28-41fb-88f8-130a0ecf83ee/bin/uautomizer-j4sWxH34Be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ed493b1-1b28-41fb-88f8-130a0ecf83ee/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 626f3da6fd18561761a79d5d72b6e4952ec90284e3abc32807b89f761ebfb898 [2021-10-21 18:59:27,694 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 18:59:27,715 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 18:59:27,717 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 18:59:27,718 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 18:59:27,719 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 18:59:27,720 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ed493b1-1b28-41fb-88f8-130a0ecf83ee/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig1.c [2021-10-21 18:59:27,790 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ed493b1-1b28-41fb-88f8-130a0ecf83ee/bin/uautomizer-j4sWxH34Be/data/49694d863/b89802c99fb74eaa8df0ac0855b1d79e/FLAG06efee3c4 [2021-10-21 18:59:28,232 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 18:59:28,233 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ed493b1-1b28-41fb-88f8-130a0ecf83ee/sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig1.c [2021-10-21 18:59:28,238 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ed493b1-1b28-41fb-88f8-130a0ecf83ee/bin/uautomizer-j4sWxH34Be/data/49694d863/b89802c99fb74eaa8df0ac0855b1d79e/FLAG06efee3c4 [2021-10-21 18:59:28,624 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ed493b1-1b28-41fb-88f8-130a0ecf83ee/bin/uautomizer-j4sWxH34Be/data/49694d863/b89802c99fb74eaa8df0ac0855b1d79e [2021-10-21 18:59:28,627 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 18:59:28,628 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 18:59:28,630 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 18:59:28,630 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 18:59:28,645 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 18:59:28,646 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 06:59:28" (1/1) ... [2021-10-21 18:59:28,647 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ee798d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 06:59:28, skipping insertion in model container [2021-10-21 18:59:28,648 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 06:59:28" (1/1) ... [2021-10-21 18:59:28,654 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 18:59:28,682 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 18:59:28,850 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 18:59:28,853 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 18:59:28,863 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 18:59:28,872 INFO L208 MainTranslator]: Completed translation [2021-10-21 18:59:28,872 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 06:59:28 WrapperNode [2021-10-21 18:59:28,872 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 18:59:28,873 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 18:59:28,873 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 18:59:28,874 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 18:59:28,885 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 06:59:28" (1/1) ... [2021-10-21 18:59:28,891 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 06:59:28" (1/1) ... [2021-10-21 18:59:28,912 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 18:59:28,914 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 18:59:28,914 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 18:59:28,914 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 18:59:28,925 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 06:59:28" (1/1) ... [2021-10-21 18:59:28,925 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 06:59:28" (1/1) ... [2021-10-21 18:59:28,926 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 06:59:28" (1/1) ... [2021-10-21 18:59:28,926 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 06:59:28" (1/1) ... [2021-10-21 18:59:28,927 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 06:59:28" (1/1) ... [2021-10-21 18:59:28,930 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 06:59:28" (1/1) ... [2021-10-21 18:59:28,931 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 06:59:28" (1/1) ... [2021-10-21 18:59:28,932 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 18:59:28,933 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 18:59:28,933 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 18:59:28,933 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 18:59:28,936 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 06:59:28" (1/1) ... [2021-10-21 18:59:28,955 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 18:59:28,970 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ed493b1-1b28-41fb-88f8-130a0ecf83ee/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 18:59:28,984 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ed493b1-1b28-41fb-88f8-130a0ecf83ee/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 18:59:28,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ed493b1-1b28-41fb-88f8-130a0ecf83ee/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 18:59:29,015 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 18:59:29,016 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 18:59:29,162 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 18:59:29,162 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-21 18:59:29,164 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 06:59:29 BoogieIcfgContainer [2021-10-21 18:59:29,164 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 18:59:29,166 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 18:59:29,166 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 18:59:29,171 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 18:59:29,172 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 06:59:28" (1/3) ... [2021-10-21 18:59:29,180 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d832b5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 06:59:29, skipping insertion in model container [2021-10-21 18:59:29,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 06:59:28" (2/3) ... [2021-10-21 18:59:29,181 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d832b5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 06:59:29, skipping insertion in model container [2021-10-21 18:59:29,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 06:59:29" (3/3) ... [2021-10-21 18:59:29,182 INFO L111 eAbstractionObserver]: Analyzing ICFG CookSeeZuleger-TACAS2013-Fig1.c [2021-10-21 18:59:29,187 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 18:59:29,187 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-10-21 18:59:29,231 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 18:59:29,252 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-21 18:59:29,253 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-21 18:59:29,266 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 10 states have (on average 1.7) internal successors, (17), 14 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 18:59:29,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-21 18:59:29,271 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 18:59:29,272 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-21 18:59:29,272 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-21 18:59:29,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 18:59:29,278 INFO L82 PathProgramCache]: Analyzing trace with hash 963531, now seen corresponding path program 1 times [2021-10-21 18:59:29,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 18:59:29,287 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010065928] [2021-10-21 18:59:29,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 18:59:29,288 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 18:59:29,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 18:59:29,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 18:59:29,493 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 18:59:29,493 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010065928] [2021-10-21 18:59:29,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010065928] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 18:59:29,494 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 18:59:29,495 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-21 18:59:29,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563879484] [2021-10-21 18:59:29,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 18:59:29,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 18:59:29,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 18:59:29,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 18:59:29,525 INFO L87 Difference]: Start difference. First operand has 15 states, 10 states have (on average 1.7) internal successors, (17), 14 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 18:59:29,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 18:59:29,574 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2021-10-21 18:59:29,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 18:59:29,576 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-10-21 18:59:29,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 18:59:29,583 INFO L225 Difference]: With dead ends: 19 [2021-10-21 18:59:29,584 INFO L226 Difference]: Without dead ends: 10 [2021-10-21 18:59:29,588 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 18:59:29,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-10-21 18:59:29,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-10-21 18:59:29,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 18:59:29,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2021-10-21 18:59:29,617 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 4 [2021-10-21 18:59:29,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 18:59:29,618 INFO L470 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2021-10-21 18:59:29,618 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 18:59:29,619 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2021-10-21 18:59:29,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-21 18:59:29,620 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 18:59:29,620 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-21 18:59:29,620 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-21 18:59:29,621 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-21 18:59:29,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 18:59:29,625 INFO L82 PathProgramCache]: Analyzing trace with hash 963339, now seen corresponding path program 1 times [2021-10-21 18:59:29,625 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 18:59:29,626 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79523502] [2021-10-21 18:59:29,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 18:59:29,627 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 18:59:29,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 18:59:29,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 18:59:29,683 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 18:59:29,683 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79523502] [2021-10-21 18:59:29,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79523502] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 18:59:29,684 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 18:59:29,684 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-21 18:59:29,685 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208973270] [2021-10-21 18:59:29,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 18:59:29,687 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 18:59:29,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 18:59:29,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 18:59:29,690 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 18:59:29,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 18:59:29,703 INFO L93 Difference]: Finished difference Result 10 states and 11 transitions. [2021-10-21 18:59:29,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 18:59:29,704 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-10-21 18:59:29,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 18:59:29,705 INFO L225 Difference]: With dead ends: 10 [2021-10-21 18:59:29,705 INFO L226 Difference]: Without dead ends: 9 [2021-10-21 18:59:29,706 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 18:59:29,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-10-21 18:59:29,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-10-21 18:59:29,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 18:59:29,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2021-10-21 18:59:29,710 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 4 [2021-10-21 18:59:29,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 18:59:29,711 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2021-10-21 18:59:29,711 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 18:59:29,712 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2021-10-21 18:59:29,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-21 18:59:29,713 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 18:59:29,713 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-21 18:59:29,713 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-21 18:59:29,713 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-21 18:59:29,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 18:59:29,716 INFO L82 PathProgramCache]: Analyzing trace with hash 29869514, now seen corresponding path program 1 times [2021-10-21 18:59:29,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 18:59:29,717 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680729067] [2021-10-21 18:59:29,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 18:59:29,717 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 18:59:29,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 18:59:29,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 18:59:29,771 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 18:59:29,771 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680729067] [2021-10-21 18:59:29,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680729067] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 18:59:29,771 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 18:59:29,772 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-21 18:59:29,772 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193233556] [2021-10-21 18:59:29,772 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 18:59:29,773 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 18:59:29,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 18:59:29,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 18:59:29,775 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 18:59:29,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 18:59:29,791 INFO L93 Difference]: Finished difference Result 10 states and 11 transitions. [2021-10-21 18:59:29,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 18:59:29,791 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-21 18:59:29,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 18:59:29,792 INFO L225 Difference]: With dead ends: 10 [2021-10-21 18:59:29,793 INFO L226 Difference]: Without dead ends: 9 [2021-10-21 18:59:29,793 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 18:59:29,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-10-21 18:59:29,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2021-10-21 18:59:29,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 18:59:29,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 9 transitions. [2021-10-21 18:59:29,798 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 9 transitions. Word has length 5 [2021-10-21 18:59:29,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 18:59:29,798 INFO L470 AbstractCegarLoop]: Abstraction has 8 states and 9 transitions. [2021-10-21 18:59:29,798 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 18:59:29,799 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 9 transitions. [2021-10-21 18:59:29,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-21 18:59:29,799 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 18:59:29,799 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-21 18:59:29,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-21 18:59:29,800 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-21 18:59:29,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 18:59:29,801 INFO L82 PathProgramCache]: Analyzing trace with hash 29863556, now seen corresponding path program 1 times [2021-10-21 18:59:29,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 18:59:29,802 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891623338] [2021-10-21 18:59:29,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 18:59:29,803 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 18:59:29,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 18:59:29,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 18:59:29,831 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 18:59:29,831 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891623338] [2021-10-21 18:59:29,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891623338] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 18:59:29,832 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 18:59:29,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-21 18:59:29,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068091156] [2021-10-21 18:59:29,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 18:59:29,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 18:59:29,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 18:59:29,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 18:59:29,834 INFO L87 Difference]: Start difference. First operand 8 states and 9 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 18:59:29,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 18:59:29,842 INFO L93 Difference]: Finished difference Result 8 states and 9 transitions. [2021-10-21 18:59:29,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 18:59:29,844 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-21 18:59:29,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 18:59:29,845 INFO L225 Difference]: With dead ends: 8 [2021-10-21 18:59:29,845 INFO L226 Difference]: Without dead ends: 0 [2021-10-21 18:59:29,846 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 18:59:29,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-21 18:59:29,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-21 18:59:29,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 18:59:29,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-21 18:59:29,847 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 5 [2021-10-21 18:59:29,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 18:59:29,848 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-21 18:59:29,848 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 18:59:29,848 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-21 18:59:29,849 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-21 18:59:29,853 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 18:59:29,853 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 18:59:29,854 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 18:59:29,854 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 18:59:29,854 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-21 18:59:29,857 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-21 18:59:29,860 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 18:59:29,871 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 18:59:29,887 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2021-10-21 18:59:29,887 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-21 18:59:29,888 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2021-10-21 18:59:29,888 INFO L857 garLoopResultBuilder]: For program point L23(line 23) no Hoare annotation was computed. [2021-10-21 18:59:29,889 INFO L857 garLoopResultBuilder]: For program point L23-1(line 23) no Hoare annotation was computed. [2021-10-21 18:59:29,890 INFO L857 garLoopResultBuilder]: For program point L19(lines 19 24) no Hoare annotation was computed. [2021-10-21 18:59:29,891 INFO L853 garLoopResultBuilder]: At program point L19-2(lines 18 25) the Hoare annotation is: (and (<= ULTIMATE.start_main_~y~0 2147483647) (<= ULTIMATE.start_main_~x~0 2147483647)) [2021-10-21 18:59:29,892 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2021-10-21 18:59:29,892 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2021-10-21 18:59:29,892 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-21 18:59:29,892 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-21 18:59:29,893 INFO L853 garLoopResultBuilder]: At program point L26(lines 14 27) the Hoare annotation is: (<= ULTIMATE.start_main_~y~0 2147483647) [2021-10-21 18:59:29,893 INFO L857 garLoopResultBuilder]: For program point L20(line 20) no Hoare annotation was computed. [2021-10-21 18:59:29,893 INFO L857 garLoopResultBuilder]: For program point L20-1(line 20) no Hoare annotation was computed. [2021-10-21 18:59:29,893 INFO L857 garLoopResultBuilder]: For program point L18-2(lines 18 25) no Hoare annotation was computed. [2021-10-21 18:59:29,898 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 18:59:29,909 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 06:59:29 BoogieIcfgContainer [2021-10-21 18:59:29,910 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 18:59:29,910 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 18:59:29,910 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 18:59:29,910 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 18:59:29,911 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 06:59:29" (3/4) ... [2021-10-21 18:59:29,914 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-21 18:59:29,925 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-10-21 18:59:29,925 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-21 18:59:29,977 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ed493b1-1b28-41fb-88f8-130a0ecf83ee/bin/uautomizer-j4sWxH34Be/witness.graphml [2021-10-21 18:59:29,977 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 18:59:29,979 INFO L168 Benchmark]: Toolchain (without parser) took 1350.10 ms. Allocated memory is still 100.7 MB. Free memory was 67.7 MB in the beginning and 34.3 MB in the end (delta: 33.5 MB). Peak memory consumption was 30.9 MB. Max. memory is 16.1 GB. [2021-10-21 18:59:29,979 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 77.6 MB. Free memory was 53.4 MB in the beginning and 53.4 MB in the end (delta: 21.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 18:59:29,980 INFO L168 Benchmark]: CACSL2BoogieTranslator took 242.90 ms. Allocated memory is still 100.7 MB. Free memory was 67.4 MB in the beginning and 78.8 MB in the end (delta: -11.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-21 18:59:29,980 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.40 ms. Allocated memory is still 100.7 MB. Free memory was 78.8 MB in the beginning and 77.6 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 18:59:29,981 INFO L168 Benchmark]: Boogie Preprocessor took 17.97 ms. Allocated memory is still 100.7 MB. Free memory was 77.6 MB in the beginning and 76.8 MB in the end (delta: 748.5 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 18:59:29,981 INFO L168 Benchmark]: RCFGBuilder took 231.66 ms. Allocated memory is still 100.7 MB. Free memory was 76.8 MB in the beginning and 68.4 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-21 18:59:29,981 INFO L168 Benchmark]: TraceAbstraction took 743.89 ms. Allocated memory is still 100.7 MB. Free memory was 67.8 MB in the beginning and 37.0 MB in the end (delta: 30.9 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.1 GB. [2021-10-21 18:59:29,982 INFO L168 Benchmark]: Witness Printer took 67.15 ms. Allocated memory is still 100.7 MB. Free memory was 36.4 MB in the beginning and 34.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 18:59:29,987 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 77.6 MB. Free memory was 53.4 MB in the beginning and 53.4 MB in the end (delta: 21.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 242.90 ms. Allocated memory is still 100.7 MB. Free memory was 67.4 MB in the beginning and 78.8 MB in the end (delta: -11.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 39.40 ms. Allocated memory is still 100.7 MB. Free memory was 78.8 MB in the beginning and 77.6 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 17.97 ms. Allocated memory is still 100.7 MB. Free memory was 77.6 MB in the beginning and 76.8 MB in the end (delta: 748.5 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 231.66 ms. Allocated memory is still 100.7 MB. Free memory was 76.8 MB in the beginning and 68.4 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 743.89 ms. Allocated memory is still 100.7 MB. Free memory was 67.8 MB in the beginning and 37.0 MB in the end (delta: 30.9 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.1 GB. * Witness Printer took 67.15 ms. Allocated memory is still 100.7 MB. Free memory was 36.4 MB in the beginning and 34.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 23]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 23]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 668.3ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 11.6ms, AutomataDifference: 131.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 31.8ms, InitialAbstractionConstructionTime: 9.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 29 SDtfs, 20 SDslu, 2 SDs, 0 SdLazy, 19 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 39.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=0, InterpolantAutomatonStates: 12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 23.6ms AutomataMinimizationTime, 4 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 3 NumberOfFragments, 10 HoareAnnotationTreeSize, 2 FomulaSimplifications, 11 FormulaSimplificationTreeSizeReduction, 13.5ms HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 11.7ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 23.0ms SsaConstructionTime, 49.9ms SatisfiabilityAnalysisTime, 193.0ms InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 14 ConstructedInterpolants, 0 QuantifiedInterpolants, 38 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: y <= 2147483647 && x <= 2147483647 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: y <= 2147483647 RESULT: Ultimate proved your program to be correct! [2021-10-21 18:59:30,038 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ed493b1-1b28-41fb-88f8-130a0ecf83ee/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...