./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted/Copenhagen.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28dbc024-3042-464a-8be8-0fa4f49e25ce/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28dbc024-3042-464a-8be8-0fa4f49e25ce/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28dbc024-3042-464a-8be8-0fa4f49e25ce/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28dbc024-3042-464a-8be8-0fa4f49e25ce/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted/Copenhagen.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28dbc024-3042-464a-8be8-0fa4f49e25ce/bin/uautomizer-DrprNOufMa/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28dbc024-3042-464a-8be8-0fa4f49e25ce/bin/uautomizer-DrprNOufMa --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 97f3ae71d7e55617c3dc3c40b5dfbc58b84ebe43530264553a18780748bc766c --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 22:21:55,801 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 22:21:55,803 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 22:21:55,834 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 22:21:55,835 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 22:21:55,836 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 22:21:55,838 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 22:21:55,840 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 22:21:55,842 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 22:21:55,843 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 22:21:55,844 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 22:21:55,846 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 22:21:55,846 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 22:21:55,847 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 22:21:55,849 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 22:21:55,850 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 22:21:55,851 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 22:21:55,852 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 22:21:55,853 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 22:21:55,855 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 22:21:55,857 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 22:21:55,858 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 22:21:55,859 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 22:21:55,860 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 22:21:55,862 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 22:21:55,863 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 22:21:55,863 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 22:21:55,864 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 22:21:55,864 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 22:21:55,865 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 22:21:55,865 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 22:21:55,866 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 22:21:55,866 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 22:21:55,867 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 22:21:55,868 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 22:21:55,868 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 22:21:55,869 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 22:21:55,869 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 22:21:55,869 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 22:21:55,870 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 22:21:55,870 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 22:21:55,871 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28dbc024-3042-464a-8be8-0fa4f49e25ce/bin/uautomizer-DrprNOufMa/config/svcomp-Overflow-64bit-Automizer_Default.epf [2021-12-06 22:21:55,893 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 22:21:55,894 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 22:21:55,894 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 22:21:55,894 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 22:21:55,895 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 22:21:55,895 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 22:21:55,896 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 22:21:55,896 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 22:21:55,896 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 22:21:55,896 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 22:21:55,897 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-06 22:21:55,897 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 22:21:55,897 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 22:21:55,897 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 22:21:55,897 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 22:21:55,897 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 22:21:55,898 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-12-06 22:21:55,898 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 22:21:55,898 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 22:21:55,898 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 22:21:55,898 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 22:21:55,899 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 22:21:55,899 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 22:21:55,899 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 22:21:55,899 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 22:21:55,899 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 22:21:55,899 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 22:21:55,900 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 22:21:55,900 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 22:21:55,900 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 22:21:55,900 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 22:21:55,900 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_28dbc024-3042-464a-8be8-0fa4f49e25ce/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28dbc024-3042-464a-8be8-0fa4f49e25ce/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 97f3ae71d7e55617c3dc3c40b5dfbc58b84ebe43530264553a18780748bc766c [2021-12-06 22:21:56,092 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 22:21:56,107 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 22:21:56,109 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 22:21:56,110 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 22:21:56,110 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 22:21:56,111 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28dbc024-3042-464a-8be8-0fa4f49e25ce/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/termination-crafted/Copenhagen.c [2021-12-06 22:21:56,164 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28dbc024-3042-464a-8be8-0fa4f49e25ce/bin/uautomizer-DrprNOufMa/data/70368e22b/5dbd104007444c52820c763cbbe50690/FLAGe92356981 [2021-12-06 22:21:56,522 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 22:21:56,523 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28dbc024-3042-464a-8be8-0fa4f49e25ce/sv-benchmarks/c/termination-crafted/Copenhagen.c [2021-12-06 22:21:56,527 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28dbc024-3042-464a-8be8-0fa4f49e25ce/bin/uautomizer-DrprNOufMa/data/70368e22b/5dbd104007444c52820c763cbbe50690/FLAGe92356981 [2021-12-06 22:21:56,539 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28dbc024-3042-464a-8be8-0fa4f49e25ce/bin/uautomizer-DrprNOufMa/data/70368e22b/5dbd104007444c52820c763cbbe50690 [2021-12-06 22:21:56,541 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 22:21:56,543 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 22:21:56,544 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 22:21:56,544 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 22:21:56,547 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 22:21:56,548 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 10:21:56" (1/1) ... [2021-12-06 22:21:56,549 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d04109d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:21:56, skipping insertion in model container [2021-12-06 22:21:56,549 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 10:21:56" (1/1) ... [2021-12-06 22:21:56,555 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 22:21:56,565 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 22:21:56,679 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 22:21:56,682 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 22:21:56,692 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 22:21:56,700 INFO L208 MainTranslator]: Completed translation [2021-12-06 22:21:56,700 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:21:56 WrapperNode [2021-12-06 22:21:56,700 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 22:21:56,701 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 22:21:56,701 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 22:21:56,701 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 22:21:56,707 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:21:56" (1/1) ... [2021-12-06 22:21:56,710 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:21:56" (1/1) ... [2021-12-06 22:21:56,721 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 24 [2021-12-06 22:21:56,721 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 22:21:56,722 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 22:21:56,722 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 22:21:56,722 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 22:21:56,727 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:21:56" (1/1) ... [2021-12-06 22:21:56,728 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:21:56" (1/1) ... [2021-12-06 22:21:56,728 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:21:56" (1/1) ... [2021-12-06 22:21:56,728 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:21:56" (1/1) ... [2021-12-06 22:21:56,730 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:21:56" (1/1) ... [2021-12-06 22:21:56,732 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:21:56" (1/1) ... [2021-12-06 22:21:56,733 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:21:56" (1/1) ... [2021-12-06 22:21:56,733 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 22:21:56,734 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 22:21:56,734 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 22:21:56,734 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 22:21:56,735 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:21:56" (1/1) ... [2021-12-06 22:21:56,740 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 22:21:56,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28dbc024-3042-464a-8be8-0fa4f49e25ce/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:21:56,758 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28dbc024-3042-464a-8be8-0fa4f49e25ce/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 22:21:56,761 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28dbc024-3042-464a-8be8-0fa4f49e25ce/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 22:21:56,795 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 22:21:56,796 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 22:21:56,850 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 22:21:56,851 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 22:21:56,919 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 22:21:56,925 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 22:21:56,926 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-06 22:21:56,927 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 10:21:56 BoogieIcfgContainer [2021-12-06 22:21:56,928 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 22:21:56,930 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 22:21:56,930 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 22:21:56,933 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 22:21:56,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 10:21:56" (1/3) ... [2021-12-06 22:21:56,934 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18bfdf02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 10:21:56, skipping insertion in model container [2021-12-06 22:21:56,935 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:21:56" (2/3) ... [2021-12-06 22:21:56,935 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18bfdf02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 10:21:56, skipping insertion in model container [2021-12-06 22:21:56,935 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 10:21:56" (3/3) ... [2021-12-06 22:21:56,936 INFO L111 eAbstractionObserver]: Analyzing ICFG Copenhagen.c [2021-12-06 22:21:56,942 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 22:21:56,942 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-12-06 22:21:56,989 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 22:21:56,997 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 [2021-12-06 22:21:56,998 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-12-06 22:21:57,010 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 10 states have (on average 1.6) internal successors, (16), 14 states have internal predecessors, (16), 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) [2021-12-06 22:21:57,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-12-06 22:21:57,014 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:21:57,015 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-12-06 22:21:57,015 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-12-06 22:21:57,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:21:57,019 INFO L85 PathProgramCache]: Analyzing trace with hash 925796, now seen corresponding path program 1 times [2021-12-06 22:21:57,026 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:21:57,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212897744] [2021-12-06 22:21:57,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:21:57,027 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:21:57,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:57,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:21:57,127 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:21:57,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212897744] [2021-12-06 22:21:57,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212897744] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:21:57,128 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:21:57,129 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 22:21:57,130 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765582975] [2021-12-06 22:21:57,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:21:57,134 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:21:57,134 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:21:57,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:21:57,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 22:21:57,157 INFO L87 Difference]: Start difference. First operand has 15 states, 10 states have (on average 1.6) internal successors, (16), 14 states have internal predecessors, (16), 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), 3 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) [2021-12-06 22:21:57,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:21:57,193 INFO L93 Difference]: Finished difference Result 31 states and 33 transitions. [2021-12-06 22:21:57,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:21:57,196 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 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 [2021-12-06 22:21:57,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:21:57,204 INFO L225 Difference]: With dead ends: 31 [2021-12-06 22:21:57,204 INFO L226 Difference]: Without dead ends: 18 [2021-12-06 22:21:57,207 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 22:21:57,212 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 10 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:21:57,213 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 17 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:21:57,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-12-06 22:21:57,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 13. [2021-12-06 22:21:57,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 12 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) [2021-12-06 22:21:57,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2021-12-06 22:21:57,245 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 4 [2021-12-06 22:21:57,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:21:57,246 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2021-12-06 22:21:57,246 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 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) [2021-12-06 22:21:57,246 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2021-12-06 22:21:57,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-12-06 22:21:57,247 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:21:57,247 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-12-06 22:21:57,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 22:21:57,248 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-12-06 22:21:57,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:21:57,249 INFO L85 PathProgramCache]: Analyzing trace with hash 28699721, now seen corresponding path program 1 times [2021-12-06 22:21:57,249 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:21:57,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667873996] [2021-12-06 22:21:57,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:21:57,250 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:21:57,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:57,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:21:57,273 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:21:57,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667873996] [2021-12-06 22:21:57,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667873996] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:21:57,274 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:21:57,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 22:21:57,275 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555028688] [2021-12-06 22:21:57,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:21:57,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:21:57,276 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:21:57,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:21:57,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 22:21:57,278 INFO L87 Difference]: Start difference. First operand 13 states and 13 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) [2021-12-06 22:21:57,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:21:57,288 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2021-12-06 22:21:57,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:21:57,288 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 [2021-12-06 22:21:57,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:21:57,289 INFO L225 Difference]: With dead ends: 13 [2021-12-06 22:21:57,289 INFO L226 Difference]: Without dead ends: 12 [2021-12-06 22:21:57,290 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 22:21:57,292 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 5 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:21:57,293 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 8 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:21:57,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-12-06 22:21:57,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-12-06 22:21:57,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 11 states have internal predecessors, (12), 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) [2021-12-06 22:21:57,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2021-12-06 22:21:57,297 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 5 [2021-12-06 22:21:57,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:21:57,297 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2021-12-06 22:21:57,297 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) [2021-12-06 22:21:57,297 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2021-12-06 22:21:57,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-06 22:21:57,298 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:21:57,298 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-06 22:21:57,298 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 22:21:57,299 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-12-06 22:21:57,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:21:57,299 INFO L85 PathProgramCache]: Analyzing trace with hash 889691398, now seen corresponding path program 1 times [2021-12-06 22:21:57,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:21:57,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960089681] [2021-12-06 22:21:57,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:21:57,300 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:21:57,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:57,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:21:57,332 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:21:57,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960089681] [2021-12-06 22:21:57,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960089681] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:21:57,333 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:21:57,333 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 22:21:57,334 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473335156] [2021-12-06 22:21:57,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:21:57,334 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 22:21:57,334 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:21:57,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 22:21:57,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 22:21:57,336 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 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) [2021-12-06 22:21:57,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:21:57,361 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2021-12-06 22:21:57,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 22:21:57,361 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 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 6 [2021-12-06 22:21:57,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:21:57,362 INFO L225 Difference]: With dead ends: 17 [2021-12-06 22:21:57,362 INFO L226 Difference]: Without dead ends: 16 [2021-12-06 22:21:57,363 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 22:21:57,364 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 5 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:21:57,365 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 15 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:21:57,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-12-06 22:21:57,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 14. [2021-12-06 22:21:57,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 13 states have internal predecessors, (14), 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) [2021-12-06 22:21:57,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2021-12-06 22:21:57,369 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 6 [2021-12-06 22:21:57,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:21:57,370 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2021-12-06 22:21:57,370 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 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) [2021-12-06 22:21:57,370 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2021-12-06 22:21:57,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-06 22:21:57,371 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:21:57,371 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:21:57,371 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-06 22:21:57,371 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-12-06 22:21:57,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:21:57,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1810629611, now seen corresponding path program 1 times [2021-12-06 22:21:57,373 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:21:57,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277289947] [2021-12-06 22:21:57,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:21:57,373 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:21:57,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:57,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:21:57,399 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:21:57,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277289947] [2021-12-06 22:21:57,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277289947] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:21:57,400 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:21:57,400 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 22:21:57,400 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856848771] [2021-12-06 22:21:57,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:21:57,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:21:57,401 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:21:57,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:21:57,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 22:21:57,402 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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) [2021-12-06 22:21:57,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:21:57,409 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2021-12-06 22:21:57,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:21:57,410 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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 7 [2021-12-06 22:21:57,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:21:57,410 INFO L225 Difference]: With dead ends: 14 [2021-12-06 22:21:57,410 INFO L226 Difference]: Without dead ends: 13 [2021-12-06 22:21:57,411 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 22:21:57,412 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 3 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:21:57,413 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 8 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:21:57,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-12-06 22:21:57,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-12-06 22:21:57,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 12 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) [2021-12-06 22:21:57,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2021-12-06 22:21:57,417 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 7 [2021-12-06 22:21:57,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:21:57,417 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2021-12-06 22:21:57,417 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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) [2021-12-06 22:21:57,417 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2021-12-06 22:21:57,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-06 22:21:57,418 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:21:57,418 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:21:57,418 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-06 22:21:57,419 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-12-06 22:21:57,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:21:57,419 INFO L85 PathProgramCache]: Analyzing trace with hash 553302605, now seen corresponding path program 1 times [2021-12-06 22:21:57,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:21:57,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145539437] [2021-12-06 22:21:57,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:21:57,420 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:21:57,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:57,451 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:21:57,452 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:21:57,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145539437] [2021-12-06 22:21:57,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145539437] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:21:57,452 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:21:57,452 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 22:21:57,452 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859505050] [2021-12-06 22:21:57,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:21:57,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 22:21:57,453 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:21:57,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 22:21:57,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 22:21:57,454 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 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) [2021-12-06 22:21:57,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:21:57,470 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2021-12-06 22:21:57,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 22:21:57,471 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 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) Word has length 9 [2021-12-06 22:21:57,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:21:57,471 INFO L225 Difference]: With dead ends: 13 [2021-12-06 22:21:57,472 INFO L226 Difference]: Without dead ends: 12 [2021-12-06 22:21:57,472 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 22:21:57,473 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 4 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:21:57,474 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 6 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:21:57,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-12-06 22:21:57,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-12-06 22:21:57,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 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) [2021-12-06 22:21:57,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2021-12-06 22:21:57,477 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 9 [2021-12-06 22:21:57,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:21:57,478 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2021-12-06 22:21:57,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 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) [2021-12-06 22:21:57,478 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2021-12-06 22:21:57,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-06 22:21:57,479 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:21:57,479 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2021-12-06 22:21:57,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-06 22:21:57,479 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-12-06 22:21:57,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:21:57,480 INFO L85 PathProgramCache]: Analyzing trace with hash -852139857, now seen corresponding path program 1 times [2021-12-06 22:21:57,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:21:57,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602598748] [2021-12-06 22:21:57,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:21:57,481 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:21:57,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:57,516 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:21:57,517 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:21:57,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602598748] [2021-12-06 22:21:57,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602598748] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:21:57,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1056164477] [2021-12-06 22:21:57,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:21:57,518 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:21:57,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28dbc024-3042-464a-8be8-0fa4f49e25ce/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:21:57,519 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28dbc024-3042-464a-8be8-0fa4f49e25ce/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:21:57,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28dbc024-3042-464a-8be8-0fa4f49e25ce/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 22:21:57,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:57,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 22:21:57,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:21:57,595 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:21:57,595 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:21:57,635 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:21:57,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1056164477] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:21:57,635 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 22:21:57,636 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-12-06 22:21:57,636 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972830954] [2021-12-06 22:21:57,636 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 22:21:57,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 22:21:57,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:21:57,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 22:21:57,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-06 22:21:57,637 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 8 states, 7 states have (on average 3.0) internal successors, (21), 8 states have internal predecessors, (21), 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) [2021-12-06 22:21:57,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:21:57,680 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2021-12-06 22:21:57,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 22:21:57,681 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 8 states have internal predecessors, (21), 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 11 [2021-12-06 22:21:57,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:21:57,681 INFO L225 Difference]: With dead ends: 14 [2021-12-06 22:21:57,681 INFO L226 Difference]: Without dead ends: 0 [2021-12-06 22:21:57,682 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-12-06 22:21:57,683 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 7 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:21:57,683 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 6 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:21:57,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-06 22:21:57,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-06 22:21:57,684 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) [2021-12-06 22:21:57,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-06 22:21:57,685 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2021-12-06 22:21:57,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:21:57,685 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-06 22:21:57,685 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 8 states have internal predecessors, (21), 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) [2021-12-06 22:21:57,685 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-06 22:21:57,685 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-06 22:21:57,688 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 4 remaining) [2021-12-06 22:21:57,688 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 4 remaining) [2021-12-06 22:21:57,689 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 4 remaining) [2021-12-06 22:21:57,689 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 4 remaining) [2021-12-06 22:21:57,710 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28dbc024-3042-464a-8be8-0fa4f49e25ce/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 22:21:57,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28dbc024-3042-464a-8be8-0fa4f49e25ce/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-12-06 22:21:57,896 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-12-06 22:21:57,989 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-12-06 22:21:57,989 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-12-06 22:21:57,990 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 19) no Hoare annotation was computed. [2021-12-06 22:21:57,990 INFO L861 garLoopResultBuilder]: At program point L21(lines 11 22) the Hoare annotation is: true [2021-12-06 22:21:57,991 INFO L858 garLoopResultBuilder]: For program point L19(line 19) no Hoare annotation was computed. [2021-12-06 22:21:57,991 INFO L858 garLoopResultBuilder]: For program point L19-1(line 19) no Hoare annotation was computed. [2021-12-06 22:21:57,991 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-12-06 22:21:57,992 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-12-06 22:21:57,992 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 19) no Hoare annotation was computed. [2021-12-06 22:21:57,992 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-12-06 22:21:57,993 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-12-06 22:21:57,993 INFO L858 garLoopResultBuilder]: For program point L18(line 18) no Hoare annotation was computed. [2021-12-06 22:21:57,993 INFO L858 garLoopResultBuilder]: For program point L18-1(line 18) no Hoare annotation was computed. [2021-12-06 22:21:57,994 INFO L854 garLoopResultBuilder]: At program point L16-2(lines 16 20) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= |ULTIMATE.start_main_~y~0#1| 2147483647)) [2021-12-06 22:21:57,994 INFO L858 garLoopResultBuilder]: For program point L16-3(lines 16 20) no Hoare annotation was computed. [2021-12-06 22:21:58,003 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2021-12-06 22:21:58,007 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-06 22:21:58,042 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.12 10:21:58 BoogieIcfgContainer [2021-12-06 22:21:58,042 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-06 22:21:58,044 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-06 22:21:58,044 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-06 22:21:58,044 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-06 22:21:58,045 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 10:21:56" (3/4) ... [2021-12-06 22:21:58,053 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-06 22:21:58,068 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-12-06 22:21:58,069 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-12-06 22:21:58,069 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-06 22:21:58,096 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28dbc024-3042-464a-8be8-0fa4f49e25ce/bin/uautomizer-DrprNOufMa/witness.graphml [2021-12-06 22:21:58,096 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-06 22:21:58,096 INFO L158 Benchmark]: Toolchain (without parser) took 1554.03ms. Allocated memory is still 119.5MB. Free memory was 86.3MB in the beginning and 85.7MB in the end (delta: 614.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 22:21:58,097 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 73.4MB. Free memory was 51.6MB in the beginning and 51.5MB in the end (delta: 21.3kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 22:21:58,097 INFO L158 Benchmark]: CACSL2BoogieTranslator took 156.52ms. Allocated memory is still 119.5MB. Free memory was 86.0MB in the beginning and 97.6MB in the end (delta: -11.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-06 22:21:58,097 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.38ms. Allocated memory is still 119.5MB. Free memory was 97.6MB in the beginning and 96.3MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 22:21:58,098 INFO L158 Benchmark]: Boogie Preprocessor took 11.53ms. Allocated memory is still 119.5MB. Free memory was 96.3MB in the beginning and 95.5MB in the end (delta: 743.7kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 22:21:58,098 INFO L158 Benchmark]: RCFGBuilder took 194.02ms. Allocated memory is still 119.5MB. Free memory was 95.5MB in the beginning and 86.4MB in the end (delta: 9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-06 22:21:58,098 INFO L158 Benchmark]: TraceAbstraction took 1112.95ms. Allocated memory is still 119.5MB. Free memory was 86.4MB in the beginning and 88.2MB in the end (delta: -1.8MB). Peak memory consumption was 43.9kB. Max. memory is 16.1GB. [2021-12-06 22:21:58,098 INFO L158 Benchmark]: Witness Printer took 52.42ms. Allocated memory is still 119.5MB. Free memory was 88.2MB in the beginning and 85.7MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 22:21:58,100 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 73.4MB. Free memory was 51.6MB in the beginning and 51.5MB in the end (delta: 21.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 156.52ms. Allocated memory is still 119.5MB. Free memory was 86.0MB in the beginning and 97.6MB in the end (delta: -11.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 20.38ms. Allocated memory is still 119.5MB. Free memory was 97.6MB in the beginning and 96.3MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 11.53ms. Allocated memory is still 119.5MB. Free memory was 96.3MB in the beginning and 95.5MB in the end (delta: 743.7kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 194.02ms. Allocated memory is still 119.5MB. Free memory was 95.5MB in the beginning and 86.4MB in the end (delta: 9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 1112.95ms. Allocated memory is still 119.5MB. Free memory was 86.4MB in the beginning and 88.2MB in the end (delta: -1.8MB). Peak memory consumption was 43.9kB. Max. memory is 16.1GB. * Witness Printer took 52.42ms. Allocated memory is still 119.5MB. Free memory was 88.2MB in the beginning and 85.7MB in the end (delta: 2.5MB). 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 - PositiveResult [Line: 18]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 18]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 19]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 19]: 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: 1.0s, OverallIterations: 6, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 34 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 34 mSDsluCounter, 60 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 23 mSDsCounter, 12 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 65 IncrementalHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 12 mSolverCounterUnsat, 37 mSDtfsCounter, 65 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 42 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=0, InterpolantAutomatonStates: 24, 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, 6 MinimizatonAttempts, 7 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 6 NumberOfFragments, 8 HoareAnnotationTreeSize, 2 FomulaSimplifications, 6 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 27 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 53 NumberOfCodeBlocks, 53 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 56 ConstructedInterpolants, 0 QuantifiedInterpolants, 140 SizeOfPredicates, 2 NumberOfNonLiveVariables, 28 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 8 InterpolantComputations, 5 PerfectInterpolantSequences, 2/14 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: 11]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: x <= 2147483647 && y <= 2147483647 RESULT: Ultimate proved your program to be correct! [2021-12-06 22:21:58,127 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28dbc024-3042-464a-8be8-0fa4f49e25ce/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE