./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-acceleration/simple_2-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7e70badd Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9686a7b-f192-4a52-901c-e3e467c981a1/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9686a7b-f192-4a52-901c-e3e467c981a1/bin/uautomizer-wIGwrQj20G/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9686a7b-f192-4a52-901c-e3e467c981a1/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9686a7b-f192-4a52-901c-e3e467c981a1/bin/uautomizer-wIGwrQj20G/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-acceleration/simple_2-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9686a7b-f192-4a52-901c-e3e467c981a1/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9686a7b-f192-4a52-901c-e3e467c981a1/bin/uautomizer-wIGwrQj20G --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ca20d2ad08bf0f7fa23e269f0ee97814132c0c2a0f348f398575419f579ef49b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-7e70bad [2021-11-23 12:40:26,175 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 12:40:26,179 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 12:40:26,262 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 12:40:26,263 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 12:40:26,264 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 12:40:26,267 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 12:40:26,270 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 12:40:26,273 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 12:40:26,274 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 12:40:26,276 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 12:40:26,277 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 12:40:26,278 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 12:40:26,280 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 12:40:26,282 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 12:40:26,284 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 12:40:26,285 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 12:40:26,287 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 12:40:26,289 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 12:40:26,293 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 12:40:26,295 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 12:40:26,304 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 12:40:26,306 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 12:40:26,308 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 12:40:26,312 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 12:40:26,313 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 12:40:26,313 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 12:40:26,315 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 12:40:26,324 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 12:40:26,326 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 12:40:26,326 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 12:40:26,328 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 12:40:26,330 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 12:40:26,332 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 12:40:26,334 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 12:40:26,335 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 12:40:26,336 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 12:40:26,336 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 12:40:26,336 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 12:40:26,338 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 12:40:26,339 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 12:40:26,340 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9686a7b-f192-4a52-901c-e3e467c981a1/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-23 12:40:26,395 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 12:40:26,395 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 12:40:26,396 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 12:40:26,396 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 12:40:26,397 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 12:40:26,397 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 12:40:26,398 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 12:40:26,398 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 12:40:26,398 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 12:40:26,398 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 12:40:26,399 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 12:40:26,399 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 12:40:26,399 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 12:40:26,399 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 12:40:26,400 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 12:40:26,400 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 12:40:26,400 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 12:40:26,400 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 12:40:26,400 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 12:40:26,401 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 12:40:26,401 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 12:40:26,401 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 12:40:26,401 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 12:40:26,402 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 12:40:26,402 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 12:40:26,402 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 12:40:26,402 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 12:40:26,403 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 12:40:26,403 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-23 12:40:26,403 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-23 12:40:26,403 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 12:40:26,404 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 12:40:26,404 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_d9686a7b-f192-4a52-901c-e3e467c981a1/bin/uautomizer-wIGwrQj20G/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9686a7b-f192-4a52-901c-e3e467c981a1/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ca20d2ad08bf0f7fa23e269f0ee97814132c0c2a0f348f398575419f579ef49b [2021-11-23 12:40:26,668 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 12:40:26,694 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 12:40:26,697 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 12:40:26,699 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 12:40:26,700 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 12:40:26,702 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9686a7b-f192-4a52-901c-e3e467c981a1/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/loop-acceleration/simple_2-2.c [2021-11-23 12:40:26,766 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9686a7b-f192-4a52-901c-e3e467c981a1/bin/uautomizer-wIGwrQj20G/data/0f0580474/ff500bdf5ae5421d932336d99a9d99fb/FLAGedb9a9e0f [2021-11-23 12:40:27,322 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 12:40:27,323 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9686a7b-f192-4a52-901c-e3e467c981a1/sv-benchmarks/c/loop-acceleration/simple_2-2.c [2021-11-23 12:40:27,332 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9686a7b-f192-4a52-901c-e3e467c981a1/bin/uautomizer-wIGwrQj20G/data/0f0580474/ff500bdf5ae5421d932336d99a9d99fb/FLAGedb9a9e0f [2021-11-23 12:40:27,685 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9686a7b-f192-4a52-901c-e3e467c981a1/bin/uautomizer-wIGwrQj20G/data/0f0580474/ff500bdf5ae5421d932336d99a9d99fb [2021-11-23 12:40:27,689 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 12:40:27,691 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 12:40:27,695 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 12:40:27,696 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 12:40:27,699 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 12:40:27,700 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:40:27" (1/1) ... [2021-11-23 12:40:27,702 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33315589 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:40:27, skipping insertion in model container [2021-11-23 12:40:27,703 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:40:27" (1/1) ... [2021-11-23 12:40:27,712 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 12:40:27,729 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 12:40:27,894 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9686a7b-f192-4a52-901c-e3e467c981a1/sv-benchmarks/c/loop-acceleration/simple_2-2.c[372,385] [2021-11-23 12:40:27,930 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 12:40:27,940 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 12:40:27,953 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9686a7b-f192-4a52-901c-e3e467c981a1/sv-benchmarks/c/loop-acceleration/simple_2-2.c[372,385] [2021-11-23 12:40:27,955 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 12:40:27,969 INFO L208 MainTranslator]: Completed translation [2021-11-23 12:40:27,970 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:40:27 WrapperNode [2021-11-23 12:40:27,970 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 12:40:27,972 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 12:40:27,972 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 12:40:27,972 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 12:40:27,981 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:40:27" (1/1) ... [2021-11-23 12:40:27,988 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:40:27" (1/1) ... [2021-11-23 12:40:28,007 INFO L137 Inliner]: procedures = 13, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 26 [2021-11-23 12:40:28,007 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 12:40:28,008 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 12:40:28,008 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 12:40:28,008 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 12:40:28,017 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:40:27" (1/1) ... [2021-11-23 12:40:28,018 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:40:27" (1/1) ... [2021-11-23 12:40:28,019 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:40:27" (1/1) ... [2021-11-23 12:40:28,019 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:40:27" (1/1) ... [2021-11-23 12:40:28,022 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:40:27" (1/1) ... [2021-11-23 12:40:28,026 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:40:27" (1/1) ... [2021-11-23 12:40:28,027 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:40:27" (1/1) ... [2021-11-23 12:40:28,028 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 12:40:28,029 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 12:40:28,029 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 12:40:28,030 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 12:40:28,031 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:40:27" (1/1) ... [2021-11-23 12:40:28,039 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 12:40:28,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9686a7b-f192-4a52-901c-e3e467c981a1/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:40:28,073 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9686a7b-f192-4a52-901c-e3e467c981a1/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 12:40:28,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9686a7b-f192-4a52-901c-e3e467c981a1/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 12:40:28,136 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 12:40:28,136 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 12:40:28,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 12:40:28,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 12:40:28,206 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 12:40:28,208 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 12:40:28,347 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 12:40:28,355 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 12:40:28,355 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 12:40:28,360 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:40:28 BoogieIcfgContainer [2021-11-23 12:40:28,360 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 12:40:28,362 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 12:40:28,362 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 12:40:28,366 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 12:40:28,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 12:40:27" (1/3) ... [2021-11-23 12:40:28,368 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@453b60fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 12:40:28, skipping insertion in model container [2021-11-23 12:40:28,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:40:27" (2/3) ... [2021-11-23 12:40:28,369 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@453b60fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 12:40:28, skipping insertion in model container [2021-11-23 12:40:28,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:40:28" (3/3) ... [2021-11-23 12:40:28,371 INFO L111 eAbstractionObserver]: Analyzing ICFG simple_2-2.c [2021-11-23 12:40:28,377 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 12:40:28,378 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 12:40:28,450 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 12:40:28,461 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=PETRI_NET, 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 [2021-11-23 12:40:28,461 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 12:40:28,481 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 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) [2021-11-23 12:40:28,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-23 12:40:28,493 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:40:28,494 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-23 12:40:28,495 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:40:28,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:40:28,505 INFO L85 PathProgramCache]: Analyzing trace with hash 889633835, now seen corresponding path program 1 times [2021-11-23 12:40:28,521 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:40:28,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167890328] [2021-11-23 12:40:28,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:40:28,523 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:40:28,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 12:40:28,618 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 12:40:28,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 12:40:28,665 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 12:40:28,668 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-23 12:40:28,669 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-23 12:40:28,672 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 12:40:28,680 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2021-11-23 12:40:28,684 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-23 12:40:28,716 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 12:40:28 BoogieIcfgContainer [2021-11-23 12:40:28,716 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-23 12:40:28,718 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 12:40:28,718 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 12:40:28,719 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 12:40:28,719 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:40:28" (3/4) ... [2021-11-23 12:40:28,726 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-23 12:40:28,785 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9686a7b-f192-4a52-901c-e3e467c981a1/bin/uautomizer-wIGwrQj20G/witness.graphml [2021-11-23 12:40:28,785 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 12:40:28,787 INFO L158 Benchmark]: Toolchain (without parser) took 1094.87ms. Allocated memory is still 109.1MB. Free memory was 79.5MB in the beginning and 58.6MB in the end (delta: 20.9MB). Peak memory consumption was 17.9MB. Max. memory is 16.1GB. [2021-11-23 12:40:28,788 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 109.1MB. Free memory is still 62.6MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 12:40:28,792 INFO L158 Benchmark]: CACSL2BoogieTranslator took 275.51ms. Allocated memory is still 109.1MB. Free memory was 79.2MB in the beginning and 84.5MB in the end (delta: -5.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 12:40:28,793 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.55ms. Allocated memory is still 109.1MB. Free memory was 84.5MB in the beginning and 83.2MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 12:40:28,793 INFO L158 Benchmark]: Boogie Preprocessor took 20.38ms. Allocated memory is still 109.1MB. Free memory was 83.2MB in the beginning and 82.3MB in the end (delta: 865.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 12:40:28,794 INFO L158 Benchmark]: RCFGBuilder took 330.91ms. Allocated memory is still 109.1MB. Free memory was 81.9MB in the beginning and 73.8MB in the end (delta: 8.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 12:40:28,795 INFO L158 Benchmark]: TraceAbstraction took 354.01ms. Allocated memory is still 109.1MB. Free memory was 73.2MB in the beginning and 60.6MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-23 12:40:28,795 INFO L158 Benchmark]: Witness Printer took 66.90ms. Allocated memory is still 109.1MB. Free memory was 60.2MB in the beginning and 58.6MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 12:40:28,798 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 109.1MB. Free memory is still 62.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 275.51ms. Allocated memory is still 109.1MB. Free memory was 79.2MB in the beginning and 84.5MB in the end (delta: -5.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.55ms. Allocated memory is still 109.1MB. Free memory was 84.5MB in the beginning and 83.2MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 20.38ms. Allocated memory is still 109.1MB. Free memory was 83.2MB in the beginning and 82.3MB in the end (delta: 865.9kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 330.91ms. Allocated memory is still 109.1MB. Free memory was 81.9MB in the beginning and 73.8MB in the end (delta: 8.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 354.01ms. Allocated memory is still 109.1MB. Free memory was 73.2MB in the beginning and 60.6MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Witness Printer took 66.90ms. Allocated memory is still 109.1MB. Free memory was 60.2MB in the beginning and 58.6MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 8]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L14] unsigned int x = __VERIFIER_nondet_uint(); [L16] COND FALSE !(x < 0x0fffffff) VAL [x=268435455] [L20] CALL __VERIFIER_assert(x > 0x0fffffff) [L7] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L8] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, 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: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 RESULT: Ultimate proved your program to be incorrect! [2021-11-23 12:40:28,854 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9686a7b-f192-4a52-901c-e3e467c981a1/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE