./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops/while_infinite_loop_4.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95ffe1e6-7e30-48d2-b159-353275ee7299/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95ffe1e6-7e30-48d2-b159-353275ee7299/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95ffe1e6-7e30-48d2-b159-353275ee7299/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95ffe1e6-7e30-48d2-b159-353275ee7299/bin/uautomizer-DQz5hQGWxF/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loops/while_infinite_loop_4.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95ffe1e6-7e30-48d2-b159-353275ee7299/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95ffe1e6-7e30-48d2-b159-353275ee7299/bin/uautomizer-DQz5hQGWxF --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 4e1af5f99f69a9274241fcc833ef9ca578ac40199221caab0e395b3d77967510 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 06:39:05,723 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 06:39:05,725 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 06:39:05,772 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 06:39:05,773 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 06:39:05,778 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 06:39:05,780 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 06:39:05,784 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 06:39:05,787 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 06:39:05,792 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 06:39:05,793 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 06:39:05,795 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 06:39:05,796 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 06:39:05,798 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 06:39:05,799 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 06:39:05,801 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 06:39:05,802 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 06:39:05,803 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 06:39:05,805 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 06:39:05,813 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 06:39:05,817 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 06:39:05,818 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 06:39:05,821 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 06:39:05,826 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 06:39:05,830 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 06:39:05,834 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 06:39:05,835 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 06:39:05,836 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 06:39:05,837 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 06:39:05,839 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 06:39:05,840 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 06:39:05,841 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 06:39:05,843 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 06:39:05,844 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 06:39:05,846 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 06:39:05,846 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 06:39:05,847 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 06:39:05,847 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 06:39:05,848 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 06:39:05,848 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 06:39:05,849 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 06:39:05,850 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95ffe1e6-7e30-48d2-b159-353275ee7299/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-20 06:39:05,890 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 06:39:05,890 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 06:39:05,891 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 06:39:05,891 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 06:39:05,899 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 06:39:05,899 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 06:39:05,900 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 06:39:05,900 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 06:39:05,901 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 06:39:05,901 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 06:39:05,902 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 06:39:05,902 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 06:39:05,903 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 06:39:05,903 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 06:39:05,903 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 06:39:05,903 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 06:39:05,903 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 06:39:05,904 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 06:39:05,904 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 06:39:05,904 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 06:39:05,904 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 06:39:05,905 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 06:39:05,905 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 06:39:05,905 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 06:39:05,905 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:39:05,905 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 06:39:05,906 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 06:39:05,906 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 06:39:05,906 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 06:39:05,908 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 06:39:05,908 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-20 06:39:05,908 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-20 06:39:05,908 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 06:39:05,909 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 06:39:05,909 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_95ffe1e6-7e30-48d2-b159-353275ee7299/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95ffe1e6-7e30-48d2-b159-353275ee7299/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4e1af5f99f69a9274241fcc833ef9ca578ac40199221caab0e395b3d77967510 [2021-11-20 06:39:06,243 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 06:39:06,265 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 06:39:06,267 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 06:39:06,269 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 06:39:06,270 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 06:39:06,271 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95ffe1e6-7e30-48d2-b159-353275ee7299/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/loops/while_infinite_loop_4.c [2021-11-20 06:39:06,348 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95ffe1e6-7e30-48d2-b159-353275ee7299/bin/uautomizer-DQz5hQGWxF/data/d37747532/f9647dae4407476fa41407d63ab97570/FLAG5656fc425 [2021-11-20 06:39:06,827 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 06:39:06,828 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95ffe1e6-7e30-48d2-b159-353275ee7299/sv-benchmarks/c/loops/while_infinite_loop_4.c [2021-11-20 06:39:06,835 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95ffe1e6-7e30-48d2-b159-353275ee7299/bin/uautomizer-DQz5hQGWxF/data/d37747532/f9647dae4407476fa41407d63ab97570/FLAG5656fc425 [2021-11-20 06:39:07,201 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95ffe1e6-7e30-48d2-b159-353275ee7299/bin/uautomizer-DQz5hQGWxF/data/d37747532/f9647dae4407476fa41407d63ab97570 [2021-11-20 06:39:07,203 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 06:39:07,205 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 06:39:07,206 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 06:39:07,207 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 06:39:07,210 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 06:39:07,211 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:39:07" (1/1) ... [2021-11-20 06:39:07,212 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10092c0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:39:07, skipping insertion in model container [2021-11-20 06:39:07,212 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:39:07" (1/1) ... [2021-11-20 06:39:07,221 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 06:39:07,233 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 06:39:07,411 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_95ffe1e6-7e30-48d2-b159-353275ee7299/sv-benchmarks/c/loops/while_infinite_loop_4.c[333,346] [2021-11-20 06:39:07,419 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:39:07,428 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 06:39:07,440 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_95ffe1e6-7e30-48d2-b159-353275ee7299/sv-benchmarks/c/loops/while_infinite_loop_4.c[333,346] [2021-11-20 06:39:07,443 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:39:07,457 INFO L208 MainTranslator]: Completed translation [2021-11-20 06:39:07,458 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:39:07 WrapperNode [2021-11-20 06:39:07,458 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 06:39:07,459 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 06:39:07,460 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 06:39:07,460 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 06:39:07,467 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:39:07" (1/1) ... [2021-11-20 06:39:07,479 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:39:07" (1/1) ... [2021-11-20 06:39:07,498 INFO L137 Inliner]: procedures = 13, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 27 [2021-11-20 06:39:07,498 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 06:39:07,499 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 06:39:07,500 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 06:39:07,500 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 06:39:07,509 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:39:07" (1/1) ... [2021-11-20 06:39:07,510 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:39:07" (1/1) ... [2021-11-20 06:39:07,512 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:39:07" (1/1) ... [2021-11-20 06:39:07,512 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:39:07" (1/1) ... [2021-11-20 06:39:07,516 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:39:07" (1/1) ... [2021-11-20 06:39:07,522 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:39:07" (1/1) ... [2021-11-20 06:39:07,529 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:39:07" (1/1) ... [2021-11-20 06:39:07,537 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 06:39:07,538 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 06:39:07,539 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 06:39:07,539 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 06:39:07,540 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:39:07" (1/1) ... [2021-11-20 06:39:07,547 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:39:07,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95ffe1e6-7e30-48d2-b159-353275ee7299/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:39:07,572 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95ffe1e6-7e30-48d2-b159-353275ee7299/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 06:39:07,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95ffe1e6-7e30-48d2-b159-353275ee7299/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 06:39:07,616 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 06:39:07,617 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 06:39:07,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 06:39:07,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 06:39:07,617 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-20 06:39:07,617 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-20 06:39:07,676 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 06:39:07,678 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 06:39:07,770 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 06:39:07,776 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 06:39:07,776 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-20 06:39:07,778 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:39:07 BoogieIcfgContainer [2021-11-20 06:39:07,779 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 06:39:07,780 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 06:39:07,781 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 06:39:07,785 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 06:39:07,785 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 06:39:07" (1/3) ... [2021-11-20 06:39:07,786 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41ba87b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:39:07, skipping insertion in model container [2021-11-20 06:39:07,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:39:07" (2/3) ... [2021-11-20 06:39:07,787 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41ba87b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:39:07, skipping insertion in model container [2021-11-20 06:39:07,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:39:07" (3/3) ... [2021-11-20 06:39:07,788 INFO L111 eAbstractionObserver]: Analyzing ICFG while_infinite_loop_4.c [2021-11-20 06:39:07,794 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 06:39:07,795 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 06:39:07,872 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 06:39:07,887 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 [2021-11-20 06:39:07,887 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-20 06:39:07,917 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 12 states have (on average 1.5) internal successors, (18), 14 states have internal predecessors, (18), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 06:39:07,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-20 06:39:07,940 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:39:07,941 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:39:07,941 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:39:07,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:39:07,948 INFO L85 PathProgramCache]: Analyzing trace with hash 1809845147, now seen corresponding path program 1 times [2021-11-20 06:39:07,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:39:07,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810176311] [2021-11-20 06:39:07,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:39:07,961 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:39:08,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:08,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:39:08,149 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:39:08,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810176311] [2021-11-20 06:39:08,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810176311] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:39:08,151 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:39:08,151 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 06:39:08,153 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282414] [2021-11-20 06:39:08,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:39:08,159 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-20 06:39:08,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:39:08,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-20 06:39:08,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 06:39:08,201 INFO L87 Difference]: Start difference. First operand has 17 states, 12 states have (on average 1.5) internal successors, (18), 14 states have internal predecessors, (18), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:39:08,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:39:08,221 INFO L93 Difference]: Finished difference Result 27 states and 38 transitions. [2021-11-20 06:39:08,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-20 06:39:08,226 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-20 06:39:08,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:39:08,234 INFO L225 Difference]: With dead ends: 27 [2021-11-20 06:39:08,235 INFO L226 Difference]: Without dead ends: 12 [2021-11-20 06:39:08,238 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 06:39:08,244 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:39:08,246 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:39:08,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-11-20 06:39:08,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-11-20 06:39:08,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 10 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 06:39:08,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2021-11-20 06:39:08,285 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 7 [2021-11-20 06:39:08,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:39:08,286 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2021-11-20 06:39:08,286 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:39:08,286 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2021-11-20 06:39:08,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-20 06:39:08,287 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:39:08,287 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:39:08,288 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 06:39:08,289 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:39:08,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:39:08,293 INFO L85 PathProgramCache]: Analyzing trace with hash 763822052, now seen corresponding path program 1 times [2021-11-20 06:39:08,293 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:39:08,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270723474] [2021-11-20 06:39:08,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:39:08,295 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:39:08,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:39:08,327 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 06:39:08,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:39:08,380 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 06:39:08,380 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-20 06:39:08,383 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-20 06:39:08,385 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 06:39:08,394 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-20 06:39:08,397 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-20 06:39:08,426 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 06:39:08 BoogieIcfgContainer [2021-11-20 06:39:08,427 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-20 06:39:08,428 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-20 06:39:08,429 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-20 06:39:08,429 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-20 06:39:08,430 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:39:07" (3/4) ... [2021-11-20 06:39:08,432 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-20 06:39:08,478 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95ffe1e6-7e30-48d2-b159-353275ee7299/bin/uautomizer-DQz5hQGWxF/witness.graphml [2021-11-20 06:39:08,479 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-20 06:39:08,480 INFO L158 Benchmark]: Toolchain (without parser) took 1274.97ms. Allocated memory is still 117.4MB. Free memory was 82.1MB in the beginning and 57.6MB in the end (delta: 24.5MB). Peak memory consumption was 22.2MB. Max. memory is 16.1GB. [2021-11-20 06:39:08,481 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 117.4MB. Free memory was 88.6MB in the beginning and 88.6MB in the end (delta: 26.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 06:39:08,482 INFO L158 Benchmark]: CACSL2BoogieTranslator took 252.35ms. Allocated memory is still 117.4MB. Free memory was 81.9MB in the beginning and 92.7MB in the end (delta: -10.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-20 06:39:08,484 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.20ms. Allocated memory is still 117.4MB. Free memory was 92.7MB in the beginning and 91.7MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 06:39:08,484 INFO L158 Benchmark]: Boogie Preprocessor took 38.24ms. Allocated memory is still 117.4MB. Free memory was 91.7MB in the beginning and 90.6MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 06:39:08,485 INFO L158 Benchmark]: RCFGBuilder took 240.45ms. Allocated memory is still 117.4MB. Free memory was 90.6MB in the beginning and 82.2MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-20 06:39:08,485 INFO L158 Benchmark]: TraceAbstraction took 647.36ms. Allocated memory is still 117.4MB. Free memory was 81.8MB in the beginning and 59.7MB in the end (delta: 22.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2021-11-20 06:39:08,486 INFO L158 Benchmark]: Witness Printer took 50.47ms. Allocated memory is still 117.4MB. Free memory was 59.7MB in the beginning and 57.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 06:39:08,491 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 117.4MB. Free memory was 88.6MB in the beginning and 88.6MB in the end (delta: 26.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 252.35ms. Allocated memory is still 117.4MB. Free memory was 81.9MB in the beginning and 92.7MB in the end (delta: -10.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.20ms. Allocated memory is still 117.4MB. Free memory was 92.7MB in the beginning and 91.7MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.24ms. Allocated memory is still 117.4MB. Free memory was 91.7MB in the beginning and 90.6MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 240.45ms. Allocated memory is still 117.4MB. Free memory was 90.6MB in the beginning and 82.2MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 647.36ms. Allocated memory is still 117.4MB. Free memory was 81.8MB in the beginning and 59.7MB in the end (delta: 22.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Witness Printer took 50.47ms. Allocated memory is still 117.4MB. Free memory was 59.7MB in the beginning and 57.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. 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: 7]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L12] int x=0; VAL [x=0] [L26] COND TRUE 1 [L28] CALL eval() [L16] COND TRUE 1 [L17] x=1 VAL [x=1] [L28] RET eval() [L29] CALL __VERIFIER_assert(x==0) VAL [\old(cond)=0, x=1] [L6] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, x=1] [L7] reach_error() VAL [\old(cond)=0, cond=0, x=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 12 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 12 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 16 NumberOfCodeBlocks, 16 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 6 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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! [2021-11-20 06:39:08,552 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95ffe1e6-7e30-48d2-b159-353275ee7299/bin/uautomizer-DQz5hQGWxF/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