./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted/NestedRecursion_1c.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8130a48b-a056-43a0-b771-47fa60bb1ac8/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8130a48b-a056-43a0-b771-47fa60bb1ac8/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8130a48b-a056-43a0-b771-47fa60bb1ac8/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8130a48b-a056-43a0-b771-47fa60bb1ac8/bin/utaipan-SDwSMHVbGG/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted/NestedRecursion_1c.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8130a48b-a056-43a0-b771-47fa60bb1ac8/bin/utaipan-SDwSMHVbGG/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8130a48b-a056-43a0-b771-47fa60bb1ac8/bin/utaipan-SDwSMHVbGG --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash f5c626d5135dc189cbc332c41f07b76804a58f47ee910790099695b0d83f1587 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-29 05:18:22,688 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 05:18:22,690 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 05:18:22,719 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 05:18:22,720 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 05:18:22,721 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 05:18:22,723 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 05:18:22,725 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 05:18:22,728 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 05:18:22,729 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 05:18:22,730 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 05:18:22,732 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 05:18:22,732 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 05:18:22,733 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 05:18:22,735 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 05:18:22,737 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 05:18:22,738 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 05:18:22,739 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 05:18:22,741 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 05:18:22,744 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 05:18:22,746 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 05:18:22,747 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 05:18:22,749 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 05:18:22,750 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 05:18:22,754 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 05:18:22,755 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 05:18:22,755 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 05:18:22,756 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 05:18:22,757 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 05:18:22,758 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 05:18:22,759 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 05:18:22,760 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 05:18:22,761 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 05:18:22,764 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 05:18:22,766 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 05:18:22,766 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 05:18:22,768 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 05:18:22,768 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 05:18:22,768 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 05:18:22,769 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 05:18:22,770 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 05:18:22,771 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8130a48b-a056-43a0-b771-47fa60bb1ac8/bin/utaipan-SDwSMHVbGG/config/svcomp-Overflow-64bit-Taipan_Default.epf [2021-10-29 05:18:22,815 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 05:18:22,818 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 05:18:22,819 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 05:18:22,819 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 05:18:22,820 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 05:18:22,820 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 05:18:22,820 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-29 05:18:22,820 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 05:18:22,828 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 05:18:22,828 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-29 05:18:22,829 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-29 05:18:22,829 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 05:18:22,830 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-29 05:18:22,830 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-29 05:18:22,830 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-29 05:18:22,831 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 05:18:22,831 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-29 05:18:22,832 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 05:18:22,832 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 05:18:22,832 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 05:18:22,832 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 05:18:22,833 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 05:18:22,833 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-29 05:18:22,833 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 05:18:22,833 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 05:18:22,834 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 05:18:22,834 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 05:18:22,834 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 05:18:22,834 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:18:22,836 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 05:18:22,837 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 05:18:22,837 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 05:18:22,837 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-29 05:18:22,837 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-29 05:18:22,838 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 05:18:22,838 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 05:18:22,838 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 05:18:22,838 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_8130a48b-a056-43a0-b771-47fa60bb1ac8/bin/utaipan-SDwSMHVbGG/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8130a48b-a056-43a0-b771-47fa60bb1ac8/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f5c626d5135dc189cbc332c41f07b76804a58f47ee910790099695b0d83f1587 [2021-10-29 05:18:23,129 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 05:18:23,158 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 05:18:23,161 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 05:18:23,163 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 05:18:23,164 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 05:18:23,165 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8130a48b-a056-43a0-b771-47fa60bb1ac8/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/termination-crafted/NestedRecursion_1c.c [2021-10-29 05:18:23,246 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8130a48b-a056-43a0-b771-47fa60bb1ac8/bin/utaipan-SDwSMHVbGG/data/096e26995/1d79d245b6554f4c84f6245cf18b71d9/FLAGa78853343 [2021-10-29 05:18:23,741 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 05:18:23,743 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8130a48b-a056-43a0-b771-47fa60bb1ac8/sv-benchmarks/c/termination-crafted/NestedRecursion_1c.c [2021-10-29 05:18:23,755 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8130a48b-a056-43a0-b771-47fa60bb1ac8/bin/utaipan-SDwSMHVbGG/data/096e26995/1d79d245b6554f4c84f6245cf18b71d9/FLAGa78853343 [2021-10-29 05:18:24,097 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8130a48b-a056-43a0-b771-47fa60bb1ac8/bin/utaipan-SDwSMHVbGG/data/096e26995/1d79d245b6554f4c84f6245cf18b71d9 [2021-10-29 05:18:24,100 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 05:18:24,102 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 05:18:24,103 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 05:18:24,103 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 05:18:24,107 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 05:18:24,108 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:18:24" (1/1) ... [2021-10-29 05:18:24,109 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c089066 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:18:24, skipping insertion in model container [2021-10-29 05:18:24,109 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:18:24" (1/1) ... [2021-10-29 05:18:24,117 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 05:18:24,129 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 05:18:24,350 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:18:24,354 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 05:18:24,369 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:18:24,384 INFO L208 MainTranslator]: Completed translation [2021-10-29 05:18:24,385 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:18:24 WrapperNode [2021-10-29 05:18:24,385 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 05:18:24,386 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 05:18:24,386 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 05:18:24,387 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 05:18:24,395 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:18:24" (1/1) ... [2021-10-29 05:18:24,399 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:18:24" (1/1) ... [2021-10-29 05:18:24,416 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 05:18:24,417 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 05:18:24,417 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 05:18:24,417 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 05:18:24,426 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:18:24" (1/1) ... [2021-10-29 05:18:24,426 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:18:24" (1/1) ... [2021-10-29 05:18:24,429 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:18:24" (1/1) ... [2021-10-29 05:18:24,430 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:18:24" (1/1) ... [2021-10-29 05:18:24,434 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:18:24" (1/1) ... [2021-10-29 05:18:24,437 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:18:24" (1/1) ... [2021-10-29 05:18:24,441 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:18:24" (1/1) ... [2021-10-29 05:18:24,446 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 05:18:24,447 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 05:18:24,449 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 05:18:24,449 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 05:18:24,450 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:18:24" (1/1) ... [2021-10-29 05:18:24,457 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:18:24,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8130a48b-a056-43a0-b771-47fa60bb1ac8/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:18:24,489 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8130a48b-a056-43a0-b771-47fa60bb1ac8/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 05:18:24,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8130a48b-a056-43a0-b771-47fa60bb1ac8/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 05:18:24,538 INFO L130 BoogieDeclarations]: Found specification of procedure rec1 [2021-10-29 05:18:24,538 INFO L138 BoogieDeclarations]: Found implementation of procedure rec1 [2021-10-29 05:18:24,539 INFO L130 BoogieDeclarations]: Found specification of procedure rec2 [2021-10-29 05:18:24,539 INFO L138 BoogieDeclarations]: Found implementation of procedure rec2 [2021-10-29 05:18:24,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 05:18:24,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 05:18:24,790 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 05:18:24,790 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-29 05:18:24,793 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:18:24 BoogieIcfgContainer [2021-10-29 05:18:24,793 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 05:18:24,795 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 05:18:24,795 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 05:18:24,798 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 05:18:24,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:18:24" (1/3) ... [2021-10-29 05:18:24,800 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d90557f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:18:24, skipping insertion in model container [2021-10-29 05:18:24,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:18:24" (2/3) ... [2021-10-29 05:18:24,800 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d90557f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:18:24, skipping insertion in model container [2021-10-29 05:18:24,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:18:24" (3/3) ... [2021-10-29 05:18:24,802 INFO L111 eAbstractionObserver]: Analyzing ICFG NestedRecursion_1c.c [2021-10-29 05:18:24,807 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 05:18:24,808 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-10-29 05:18:24,861 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 05:18:24,869 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-29 05:18:24,869 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-10-29 05:18:24,888 INFO L276 IsEmpty]: Start isEmpty. Operand has 42 states, 23 states have (on average 1.5217391304347827) internal successors, (35), 33 states have internal predecessors, (35), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-10-29 05:18:24,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-29 05:18:24,893 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:18:24,894 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-29 05:18:24,895 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting rec2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-10-29 05:18:24,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:18:24,902 INFO L85 PathProgramCache]: Analyzing trace with hash 70122184, now seen corresponding path program 1 times [2021-10-29 05:18:24,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:18:24,913 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601457577] [2021-10-29 05:18:24,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:18:24,915 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:18:24,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:18:25,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:18:25,074 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:18:25,083 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601457577] [2021-10-29 05:18:25,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601457577] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:18:25,084 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:18:25,085 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-29 05:18:25,086 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154028450] [2021-10-29 05:18:25,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-29 05:18:25,091 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:18:25,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-29 05:18:25,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-29 05:18:25,124 INFO L87 Difference]: Start difference. First operand has 42 states, 23 states have (on average 1.5217391304347827) internal successors, (35), 33 states have internal predecessors, (35), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 5 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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) [2021-10-29 05:18:25,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:18:25,229 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2021-10-29 05:18:25,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-29 05:18:25,231 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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 5 [2021-10-29 05:18:25,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:18:25,241 INFO L225 Difference]: With dead ends: 42 [2021-10-29 05:18:25,242 INFO L226 Difference]: Without dead ends: 39 [2021-10-29 05:18:25,247 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-29 05:18:25,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-10-29 05:18:25,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2021-10-29 05:18:25,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 22 states have (on average 1.5) internal successors, (33), 31 states have internal predecessors, (33), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-10-29 05:18:25,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 44 transitions. [2021-10-29 05:18:25,302 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 44 transitions. Word has length 5 [2021-10-29 05:18:25,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:18:25,303 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 44 transitions. [2021-10-29 05:18:25,303 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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) [2021-10-29 05:18:25,304 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 44 transitions. [2021-10-29 05:18:25,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-29 05:18:25,305 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:18:25,305 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-29 05:18:25,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-29 05:18:25,307 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting rec2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-10-29 05:18:25,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:18:25,312 INFO L85 PathProgramCache]: Analyzing trace with hash -2121179530, now seen corresponding path program 1 times [2021-10-29 05:18:25,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:18:25,313 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330450913] [2021-10-29 05:18:25,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:18:25,314 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:18:25,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:18:25,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:18:25,355 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:18:25,356 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330450913] [2021-10-29 05:18:25,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330450913] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:18:25,357 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:18:25,357 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-29 05:18:25,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374743992] [2021-10-29 05:18:25,360 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 05:18:25,361 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:18:25,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 05:18:25,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:18:25,364 INFO L87 Difference]: Start difference. First operand 39 states and 44 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2021-10-29 05:18:25,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:18:25,389 INFO L93 Difference]: Finished difference Result 41 states and 46 transitions. [2021-10-29 05:18:25,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 05:18:25,391 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), 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 6 [2021-10-29 05:18:25,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:18:25,395 INFO L225 Difference]: With dead ends: 41 [2021-10-29 05:18:25,396 INFO L226 Difference]: Without dead ends: 40 [2021-10-29 05:18:25,397 INFO L786 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 [2021-10-29 05:18:25,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-10-29 05:18:25,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 38. [2021-10-29 05:18:25,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 30 states have internal predecessors, (32), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-10-29 05:18:25,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2021-10-29 05:18:25,417 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 6 [2021-10-29 05:18:25,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:18:25,418 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2021-10-29 05:18:25,418 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), 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) [2021-10-29 05:18:25,420 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2021-10-29 05:18:25,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-29 05:18:25,422 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:18:25,423 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:18:25,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-29 05:18:25,424 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-10-29 05:18:25,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:18:25,425 INFO L85 PathProgramCache]: Analyzing trace with hash -509849608, now seen corresponding path program 1 times [2021-10-29 05:18:25,425 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:18:25,426 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746271400] [2021-10-29 05:18:25,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:18:25,430 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:18:25,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:18:25,504 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-29 05:18:25,505 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:18:25,505 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746271400] [2021-10-29 05:18:25,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746271400] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:18:25,506 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:18:25,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-29 05:18:25,506 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620953435] [2021-10-29 05:18:25,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-29 05:18:25,514 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:18:25,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-29 05:18:25,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-29 05:18:25,516 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-29 05:18:25,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:18:25,582 INFO L93 Difference]: Finished difference Result 84 states and 98 transitions. [2021-10-29 05:18:25,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-29 05:18:25,583 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2021-10-29 05:18:25,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:18:25,585 INFO L225 Difference]: With dead ends: 84 [2021-10-29 05:18:25,585 INFO L226 Difference]: Without dead ends: 53 [2021-10-29 05:18:25,587 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-29 05:18:25,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-10-29 05:18:25,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 46. [2021-10-29 05:18:25,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 27 states have (on average 1.3703703703703705) internal successors, (37), 36 states have internal predecessors, (37), 7 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2021-10-29 05:18:25,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 51 transitions. [2021-10-29 05:18:25,603 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 51 transitions. Word has length 16 [2021-10-29 05:18:25,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:18:25,603 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 51 transitions. [2021-10-29 05:18:25,606 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-29 05:18:25,606 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 51 transitions. [2021-10-29 05:18:25,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-29 05:18:25,608 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:18:25,608 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:18:25,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-29 05:18:25,610 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting rec2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-10-29 05:18:25,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:18:25,611 INFO L85 PathProgramCache]: Analyzing trace with hash -1925643664, now seen corresponding path program 1 times [2021-10-29 05:18:25,611 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:18:25,612 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239607064] [2021-10-29 05:18:25,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:18:25,612 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:18:25,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:18:25,655 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-29 05:18:25,655 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:18:25,655 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239607064] [2021-10-29 05:18:25,656 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239607064] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:18:25,656 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:18:25,656 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-29 05:18:25,657 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857139955] [2021-10-29 05:18:25,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 05:18:25,657 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:18:25,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 05:18:25,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:18:25,659 INFO L87 Difference]: Start difference. First operand 46 states and 51 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-29 05:18:25,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:18:25,681 INFO L93 Difference]: Finished difference Result 46 states and 51 transitions. [2021-10-29 05:18:25,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 05:18:25,682 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2021-10-29 05:18:25,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:18:25,684 INFO L225 Difference]: With dead ends: 46 [2021-10-29 05:18:25,684 INFO L226 Difference]: Without dead ends: 45 [2021-10-29 05:18:25,685 INFO L786 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 [2021-10-29 05:18:25,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-10-29 05:18:25,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2021-10-29 05:18:25,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 27 states have (on average 1.3333333333333333) internal successors, (36), 35 states have internal predecessors, (36), 7 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2021-10-29 05:18:25,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 50 transitions. [2021-10-29 05:18:25,694 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 50 transitions. Word has length 19 [2021-10-29 05:18:25,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:18:25,695 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 50 transitions. [2021-10-29 05:18:25,695 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-29 05:18:25,695 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 50 transitions. [2021-10-29 05:18:25,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-29 05:18:25,696 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:18:25,697 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:18:25,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-29 05:18:25,697 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting rec2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-10-29 05:18:25,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:18:25,698 INFO L85 PathProgramCache]: Analyzing trace with hash 1379292549, now seen corresponding path program 1 times [2021-10-29 05:18:25,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:18:25,699 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286001846] [2021-10-29 05:18:25,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:18:25,699 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:18:25,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:18:25,753 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-29 05:18:25,753 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:18:25,754 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286001846] [2021-10-29 05:18:25,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286001846] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:18:25,754 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:18:25,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-29 05:18:25,755 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750266251] [2021-10-29 05:18:25,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 05:18:25,755 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:18:25,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 05:18:25,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:18:25,757 INFO L87 Difference]: Start difference. First operand 45 states and 50 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-29 05:18:25,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:18:25,779 INFO L93 Difference]: Finished difference Result 51 states and 59 transitions. [2021-10-29 05:18:25,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 05:18:25,780 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 25 [2021-10-29 05:18:25,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:18:25,782 INFO L225 Difference]: With dead ends: 51 [2021-10-29 05:18:25,782 INFO L226 Difference]: Without dead ends: 50 [2021-10-29 05:18:25,782 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:18:25,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-10-29 05:18:25,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2021-10-29 05:18:25,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 31 states have (on average 1.2903225806451613) internal successors, (40), 39 states have internal predecessors, (40), 7 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (11), 7 states have call predecessors, (11), 6 states have call successors, (11) [2021-10-29 05:18:25,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 58 transitions. [2021-10-29 05:18:25,803 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 58 transitions. Word has length 25 [2021-10-29 05:18:25,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:18:25,803 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 58 transitions. [2021-10-29 05:18:25,803 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-29 05:18:25,804 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 58 transitions. [2021-10-29 05:18:25,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-29 05:18:25,805 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:18:25,805 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:18:25,805 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-29 05:18:25,806 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-10-29 05:18:25,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:18:25,806 INFO L85 PathProgramCache]: Analyzing trace with hash -483037003, now seen corresponding path program 1 times [2021-10-29 05:18:25,806 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:18:25,807 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106608060] [2021-10-29 05:18:25,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:18:25,807 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:18:25,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:18:25,916 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-29 05:18:25,916 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:18:25,917 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106608060] [2021-10-29 05:18:25,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106608060] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:18:25,917 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:18:25,917 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-29 05:18:25,918 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273277048] [2021-10-29 05:18:25,918 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-29 05:18:25,919 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:18:25,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-29 05:18:25,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-10-29 05:18:25,920 INFO L87 Difference]: Start difference. First operand 50 states and 58 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-29 05:18:25,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:18:25,997 INFO L93 Difference]: Finished difference Result 64 states and 74 transitions. [2021-10-29 05:18:25,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-29 05:18:25,998 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 32 [2021-10-29 05:18:25,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:18:25,999 INFO L225 Difference]: With dead ends: 64 [2021-10-29 05:18:25,999 INFO L226 Difference]: Without dead ends: 0 [2021-10-29 05:18:26,001 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-10-29 05:18:26,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-29 05:18:26,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-29 05:18:26,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:18:26,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-29 05:18:26,002 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 32 [2021-10-29 05:18:26,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:18:26,003 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-29 05:18:26,003 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-29 05:18:26,003 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-29 05:18:26,003 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-29 05:18:26,006 INFO L764 garLoopResultBuilder]: Registering result SAFE for location rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-29 05:18:26,007 INFO L764 garLoopResultBuilder]: Registering result SAFE for location rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-29 05:18:26,007 INFO L764 garLoopResultBuilder]: Registering result SAFE for location rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-29 05:18:26,008 INFO L764 garLoopResultBuilder]: Registering result SAFE for location rec1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-29 05:18:26,008 INFO L764 garLoopResultBuilder]: Registering result SAFE for location rec1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-29 05:18:26,008 INFO L764 garLoopResultBuilder]: Registering result SAFE for location rec1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-29 05:18:26,009 INFO L764 garLoopResultBuilder]: Registering result SAFE for location rec2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-29 05:18:26,009 INFO L764 garLoopResultBuilder]: Registering result SAFE for location rec2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-29 05:18:26,009 INFO L764 garLoopResultBuilder]: Registering result SAFE for location rec2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-29 05:18:26,009 INFO L764 garLoopResultBuilder]: Registering result SAFE for location rec2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-29 05:18:26,010 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-29 05:18:26,012 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-29 05:18:26,016 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:18:26,018 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:18:26,019 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:18:26,020 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:18:26,021 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:18:26,022 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:18:26,039 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:18:26,040 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:18:26,041 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:18:26,042 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:18:26,043 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:18:26,045 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:18:26,046 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:18:26,048 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:18:26,063 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:18:26,064 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:18:26,065 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:18:26,066 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:18:26,067 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:18:26,068 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:18:26,068 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:18:26,069 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:18:26,070 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:18:26,075 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:18:26,075 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:18:26,076 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:18:26,103 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:18:26,110 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:18:26,111 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:18:26,112 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:18:26,112 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:18:26,113 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:18:26,123 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:18:26,124 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:18:26,125 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:18:26,125 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:18:26,126 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:18:26,127 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:18:26,128 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:18:26,128 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:18:26,129 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:18:26,130 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:18:26,131 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:18:26,132 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:18:26,132 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:18:26,143 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:18:26,144 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:18:26,219 INFO L857 garLoopResultBuilder]: For program point rec1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2021-10-29 05:18:26,225 INFO L857 garLoopResultBuilder]: For program point rec1FINAL(lines 11 15) no Hoare annotation was computed. [2021-10-29 05:18:26,225 INFO L857 garLoopResultBuilder]: For program point rec1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2021-10-29 05:18:26,225 INFO L857 garLoopResultBuilder]: For program point rec1EXIT(lines 11 15) no Hoare annotation was computed. [2021-10-29 05:18:26,225 INFO L857 garLoopResultBuilder]: For program point L14(line 14) no Hoare annotation was computed. [2021-10-29 05:18:26,226 INFO L860 garLoopResultBuilder]: At program point rec1ENTRY(lines 11 15) the Hoare annotation is: true [2021-10-29 05:18:26,226 INFO L857 garLoopResultBuilder]: For program point L14-1(line 14) no Hoare annotation was computed. [2021-10-29 05:18:26,226 INFO L857 garLoopResultBuilder]: For program point L12(lines 12 13) no Hoare annotation was computed. [2021-10-29 05:18:26,226 INFO L853 garLoopResultBuilder]: At program point L14-2(line 14) the Hoare annotation is: (not (<= |rec1_#in~i| 0)) [2021-10-29 05:18:26,227 INFO L857 garLoopResultBuilder]: For program point L14-3(line 14) no Hoare annotation was computed. [2021-10-29 05:18:26,227 INFO L857 garLoopResultBuilder]: For program point L14-4(line 14) no Hoare annotation was computed. [2021-10-29 05:18:26,227 INFO L857 garLoopResultBuilder]: For program point rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2021-10-29 05:18:26,227 INFO L857 garLoopResultBuilder]: For program point L14-5(line 14) no Hoare annotation was computed. [2021-10-29 05:18:26,228 INFO L853 garLoopResultBuilder]: At program point L14-6(line 14) the Hoare annotation is: (not (<= |rec1_#in~i| 0)) [2021-10-29 05:18:26,228 INFO L857 garLoopResultBuilder]: For program point rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2021-10-29 05:18:26,228 INFO L857 garLoopResultBuilder]: For program point rec1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2021-10-29 05:18:26,228 INFO L857 garLoopResultBuilder]: For program point L14-7(line 14) no Hoare annotation was computed. [2021-10-29 05:18:26,229 INFO L857 garLoopResultBuilder]: For program point rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2021-10-29 05:18:26,229 INFO L853 garLoopResultBuilder]: At program point L14-8(line 14) the Hoare annotation is: (not (<= |rec1_#in~i| 0)) [2021-10-29 05:18:26,229 INFO L857 garLoopResultBuilder]: For program point L14-9(line 14) no Hoare annotation was computed. [2021-10-29 05:18:26,243 INFO L857 garLoopResultBuilder]: For program point L14-10(line 14) no Hoare annotation was computed. [2021-10-29 05:18:26,243 INFO L857 garLoopResultBuilder]: For program point L14-11(line 14) no Hoare annotation was computed. [2021-10-29 05:18:26,244 INFO L857 garLoopResultBuilder]: For program point rec2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2021-10-29 05:18:26,244 INFO L857 garLoopResultBuilder]: For program point rec2FINAL(lines 17 21) no Hoare annotation was computed. [2021-10-29 05:18:26,244 INFO L857 garLoopResultBuilder]: For program point rec2EXIT(lines 17 21) no Hoare annotation was computed. [2021-10-29 05:18:26,245 INFO L857 garLoopResultBuilder]: For program point L20(line 20) no Hoare annotation was computed. [2021-10-29 05:18:26,245 INFO L857 garLoopResultBuilder]: For program point L20-1(line 20) no Hoare annotation was computed. [2021-10-29 05:18:26,245 INFO L857 garLoopResultBuilder]: For program point L18(lines 18 19) no Hoare annotation was computed. [2021-10-29 05:18:26,245 INFO L853 garLoopResultBuilder]: At program point L20-2(line 20) the Hoare annotation is: (or (not (<= |rec2_#in~j| 2147483647)) (and (<= 1 rec2_~j) (<= rec2_~j 2147483647))) [2021-10-29 05:18:26,246 INFO L857 garLoopResultBuilder]: For program point L20-3(line 20) no Hoare annotation was computed. [2021-10-29 05:18:26,246 INFO L853 garLoopResultBuilder]: At program point L20-4(line 20) the Hoare annotation is: (or (not (<= |rec2_#in~j| 2147483647)) (and (<= |rec2_#t~ret3| 0) (<= 1 rec2_~j) (<= rec2_~j 2147483647))) [2021-10-29 05:18:26,246 INFO L857 garLoopResultBuilder]: For program point L20-5(line 20) no Hoare annotation was computed. [2021-10-29 05:18:26,247 INFO L857 garLoopResultBuilder]: For program point L20-6(line 20) no Hoare annotation was computed. [2021-10-29 05:18:26,247 INFO L857 garLoopResultBuilder]: For program point L20-7(line 20) no Hoare annotation was computed. [2021-10-29 05:18:26,247 INFO L860 garLoopResultBuilder]: At program point rec2ENTRY(lines 17 21) the Hoare annotation is: true [2021-10-29 05:18:26,247 INFO L857 garLoopResultBuilder]: For program point rec2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2021-10-29 05:18:26,248 INFO L857 garLoopResultBuilder]: For program point rec2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2021-10-29 05:18:26,248 INFO L857 garLoopResultBuilder]: For program point rec2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2021-10-29 05:18:26,248 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-29 05:18:26,248 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-29 05:18:26,249 INFO L853 garLoopResultBuilder]: At program point L25(line 25) the Hoare annotation is: (<= ULTIMATE.start_main_~x~0 2147483647) [2021-10-29 05:18:26,249 INFO L857 garLoopResultBuilder]: For program point L25-1(line 25) no Hoare annotation was computed. [2021-10-29 05:18:26,253 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2021-10-29 05:18:26,255 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 05:18:26,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 05:18:26 BoogieIcfgContainer [2021-10-29 05:18:26,264 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 05:18:26,264 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 05:18:26,265 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 05:18:26,265 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 05:18:26,265 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:18:24" (3/4) ... [2021-10-29 05:18:26,268 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-29 05:18:26,275 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure rec1 [2021-10-29 05:18:26,275 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure rec2 [2021-10-29 05:18:26,281 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-10-29 05:18:26,281 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-29 05:18:26,282 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-29 05:18:26,321 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8130a48b-a056-43a0-b771-47fa60bb1ac8/bin/utaipan-SDwSMHVbGG/witness.graphml [2021-10-29 05:18:26,322 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 05:18:26,323 INFO L168 Benchmark]: Toolchain (without parser) took 2221.00 ms. Allocated memory was 100.7 MB in the beginning and 146.8 MB in the end (delta: 46.1 MB). Free memory was 74.0 MB in the beginning and 87.5 MB in the end (delta: -13.5 MB). Peak memory consumption was 32.6 MB. Max. memory is 16.1 GB. [2021-10-29 05:18:26,324 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 79.7 MB. Free memory was 39.0 MB in the beginning and 38.9 MB in the end (delta: 71.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:18:26,324 INFO L168 Benchmark]: CACSL2BoogieTranslator took 282.10 ms. Allocated memory is still 100.7 MB. Free memory was 73.7 MB in the beginning and 77.0 MB in the end (delta: -3.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-29 05:18:26,325 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.09 ms. Allocated memory is still 100.7 MB. Free memory was 77.0 MB in the beginning and 75.8 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:18:26,325 INFO L168 Benchmark]: Boogie Preprocessor took 29.26 ms. Allocated memory is still 100.7 MB. Free memory was 75.5 MB in the beginning and 74.7 MB in the end (delta: 846.6 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:18:26,326 INFO L168 Benchmark]: RCFGBuilder took 345.51 ms. Allocated memory is still 100.7 MB. Free memory was 74.7 MB in the beginning and 65.0 MB in the end (delta: 9.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-29 05:18:26,326 INFO L168 Benchmark]: TraceAbstraction took 1469.13 ms. Allocated memory was 100.7 MB in the beginning and 146.8 MB in the end (delta: 46.1 MB). Free memory was 64.7 MB in the beginning and 90.4 MB in the end (delta: -25.7 MB). Peak memory consumption was 22.0 MB. Max. memory is 16.1 GB. [2021-10-29 05:18:26,327 INFO L168 Benchmark]: Witness Printer took 57.34 ms. Allocated memory is still 146.8 MB. Free memory was 90.4 MB in the beginning and 87.5 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:18:26,329 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 79.7 MB. Free memory was 39.0 MB in the beginning and 38.9 MB in the end (delta: 71.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 282.10 ms. Allocated memory is still 100.7 MB. Free memory was 73.7 MB in the beginning and 77.0 MB in the end (delta: -3.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 30.09 ms. Allocated memory is still 100.7 MB. Free memory was 77.0 MB in the beginning and 75.8 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 29.26 ms. Allocated memory is still 100.7 MB. Free memory was 75.5 MB in the beginning and 74.7 MB in the end (delta: 846.6 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 345.51 ms. Allocated memory is still 100.7 MB. Free memory was 74.7 MB in the beginning and 65.0 MB in the end (delta: 9.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1469.13 ms. Allocated memory was 100.7 MB in the beginning and 146.8 MB in the end (delta: 46.1 MB). Free memory was 64.7 MB in the beginning and 90.4 MB in the end (delta: -25.7 MB). Peak memory consumption was 22.0 MB. Max. memory is 16.1 GB. * Witness Printer took 57.34 ms. Allocated memory is still 146.8 MB. Free memory was 90.4 MB in the beginning and 87.5 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s 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: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: 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 3 procedures, 42 locations, 10 error locations. Started 1 CEGAR loops. OverallTime: 1.3s, OverallIterations: 6, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 219 SDtfs, 52 SDslu, 489 SDs, 0 SdLazy, 125 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=50occurred in iteration=5, InterpolantAutomatonStates: 32, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 9 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 47 PreInvPairs, 51 NumberOfFragments, 44 HoareAnnotationTreeSize, 47 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 8 FomulaSimplificationsInter, 42 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 103 NumberOfCodeBlocks, 103 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 97 ConstructedInterpolants, 0 QuantifiedInterpolants, 173 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 28/28 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 10 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-29 05:18:26,371 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8130a48b-a056-43a0-b771-47fa60bb1ac8/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...