./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/verifythis/elimination_max_rec.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be11a726-835d-41fe-ba77-d7727aee1744/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be11a726-835d-41fe-ba77-d7727aee1744/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be11a726-835d-41fe-ba77-d7727aee1744/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be11a726-835d-41fe-ba77-d7727aee1744/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/verifythis/elimination_max_rec.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be11a726-835d-41fe-ba77-d7727aee1744/bin/utaipan-I9t0OCRTmS/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be11a726-835d-41fe-ba77-d7727aee1744/bin/utaipan-I9t0OCRTmS --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 32bit --witnessprinter.graph.data.programhash 1d89bfe4b4c4586e423a8e3ebdbb120ac074219803de53807cd9f075553c6e3a --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-19 08:17:54,726 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 08:17:54,728 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 08:17:54,762 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 08:17:54,763 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 08:17:54,767 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 08:17:54,768 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 08:17:54,771 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 08:17:54,774 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 08:17:54,776 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 08:17:54,776 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 08:17:54,780 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 08:17:54,781 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 08:17:54,784 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 08:17:54,785 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 08:17:54,787 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 08:17:54,789 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 08:17:54,789 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 08:17:54,790 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 08:17:54,792 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 08:17:54,793 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 08:17:54,794 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 08:17:54,795 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 08:17:54,796 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 08:17:54,799 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 08:17:54,800 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 08:17:54,800 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 08:17:54,801 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 08:17:54,801 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 08:17:54,802 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 08:17:54,803 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 08:17:54,804 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 08:17:54,804 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 08:17:54,805 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 08:17:54,806 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 08:17:54,806 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 08:17:54,807 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 08:17:54,807 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 08:17:54,808 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 08:17:54,808 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 08:17:54,809 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 08:17:54,810 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be11a726-835d-41fe-ba77-d7727aee1744/bin/utaipan-I9t0OCRTmS/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-11-19 08:17:54,842 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 08:17:54,846 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 08:17:54,848 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 08:17:54,848 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 08:17:54,849 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 08:17:54,849 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 08:17:54,849 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 08:17:54,850 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 08:17:54,850 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 08:17:54,850 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 08:17:54,851 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 08:17:54,851 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 08:17:54,852 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 08:17:54,852 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 08:17:54,852 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 08:17:54,852 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 08:17:54,852 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 08:17:54,853 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 08:17:54,853 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 08:17:54,853 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 08:17:54,854 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-19 08:17:54,854 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 08:17:54,854 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 08:17:54,856 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 08:17:54,856 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 08:17:54,856 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 08:17:54,856 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 08:17:54,856 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-19 08:17:54,857 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 08:17:54,857 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 08:17:54,857 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 08:17:54,857 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 08:17:54,858 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 08:17:54,858 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 08:17:54,858 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:17:54,858 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 08:17:54,859 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 08:17:54,859 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 08:17:54,859 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 08:17:54,859 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 08:17:54,859 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 08:17:54,860 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 08:17:54,860 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 08:17:54,860 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_be11a726-835d-41fe-ba77-d7727aee1744/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be11a726-835d-41fe-ba77-d7727aee1744/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1d89bfe4b4c4586e423a8e3ebdbb120ac074219803de53807cd9f075553c6e3a [2022-11-19 08:17:55,103 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 08:17:55,128 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 08:17:55,131 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 08:17:55,132 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 08:17:55,133 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 08:17:55,135 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be11a726-835d-41fe-ba77-d7727aee1744/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/verifythis/elimination_max_rec.c [2022-11-19 08:17:55,221 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be11a726-835d-41fe-ba77-d7727aee1744/bin/utaipan-I9t0OCRTmS/data/f575e1501/11f22919c56f44e48af1fa5ff3b726b4/FLAG359b39801 [2022-11-19 08:17:55,718 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 08:17:55,719 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be11a726-835d-41fe-ba77-d7727aee1744/sv-benchmarks/c/verifythis/elimination_max_rec.c [2022-11-19 08:17:55,724 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be11a726-835d-41fe-ba77-d7727aee1744/bin/utaipan-I9t0OCRTmS/data/f575e1501/11f22919c56f44e48af1fa5ff3b726b4/FLAG359b39801 [2022-11-19 08:17:56,220 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be11a726-835d-41fe-ba77-d7727aee1744/bin/utaipan-I9t0OCRTmS/data/f575e1501/11f22919c56f44e48af1fa5ff3b726b4 [2022-11-19 08:17:56,223 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 08:17:56,227 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 08:17:56,228 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 08:17:56,229 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 08:17:56,233 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 08:17:56,233 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:17:56" (1/1) ... [2022-11-19 08:17:56,235 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@355842f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:17:56, skipping insertion in model container [2022-11-19 08:17:56,235 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:17:56" (1/1) ... [2022-11-19 08:17:56,244 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 08:17:56,259 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 08:17:56,454 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be11a726-835d-41fe-ba77-d7727aee1744/sv-benchmarks/c/verifythis/elimination_max_rec.c[493,506] [2022-11-19 08:17:56,481 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:17:56,502 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 08:17:56,518 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be11a726-835d-41fe-ba77-d7727aee1744/sv-benchmarks/c/verifythis/elimination_max_rec.c[493,506] [2022-11-19 08:17:56,541 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:17:56,555 INFO L208 MainTranslator]: Completed translation [2022-11-19 08:17:56,555 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:17:56 WrapperNode [2022-11-19 08:17:56,556 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 08:17:56,557 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 08:17:56,557 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 08:17:56,557 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 08:17:56,565 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:17:56" (1/1) ... [2022-11-19 08:17:56,582 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:17:56" (1/1) ... [2022-11-19 08:17:56,602 INFO L138 Inliner]: procedures = 19, calls = 20, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 27 [2022-11-19 08:17:56,603 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 08:17:56,603 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 08:17:56,604 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 08:17:56,604 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 08:17:56,613 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:17:56" (1/1) ... [2022-11-19 08:17:56,614 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:17:56" (1/1) ... [2022-11-19 08:17:56,618 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:17:56" (1/1) ... [2022-11-19 08:17:56,619 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:17:56" (1/1) ... [2022-11-19 08:17:56,636 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:17:56" (1/1) ... [2022-11-19 08:17:56,640 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:17:56" (1/1) ... [2022-11-19 08:17:56,645 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:17:56" (1/1) ... [2022-11-19 08:17:56,650 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:17:56" (1/1) ... [2022-11-19 08:17:56,652 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 08:17:56,654 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 08:17:56,654 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 08:17:56,655 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 08:17:56,656 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:17:56" (1/1) ... [2022-11-19 08:17:56,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:17:56,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be11a726-835d-41fe-ba77-d7727aee1744/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:17:56,687 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be11a726-835d-41fe-ba77-d7727aee1744/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 08:17:56,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be11a726-835d-41fe-ba77-d7727aee1744/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 08:17:56,728 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 08:17:56,728 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-19 08:17:56,728 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-19 08:17:56,728 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 08:17:56,728 INFO L130 BoogieDeclarations]: Found specification of procedure check [2022-11-19 08:17:56,728 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2022-11-19 08:17:56,728 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 08:17:56,728 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 08:17:56,729 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 08:17:56,729 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 08:17:56,729 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-19 08:17:56,729 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-19 08:17:56,729 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 08:17:56,858 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 08:17:56,860 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 08:17:57,112 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 08:17:57,178 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 08:17:57,178 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-19 08:17:57,180 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:17:57 BoogieIcfgContainer [2022-11-19 08:17:57,181 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 08:17:57,183 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 08:17:57,184 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 08:17:57,187 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 08:17:57,187 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:17:56" (1/3) ... [2022-11-19 08:17:57,188 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@381d3ab8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:17:57, skipping insertion in model container [2022-11-19 08:17:57,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:17:56" (2/3) ... [2022-11-19 08:17:57,189 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@381d3ab8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:17:57, skipping insertion in model container [2022-11-19 08:17:57,189 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:17:57" (3/3) ... [2022-11-19 08:17:57,190 INFO L112 eAbstractionObserver]: Analyzing ICFG elimination_max_rec.c [2022-11-19 08:17:57,208 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 08:17:57,209 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-19 08:17:57,260 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 08:17:57,267 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7238a4fb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 08:17:57,267 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-11-19 08:17:57,272 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 25 states have internal predecessors, (27), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-19 08:17:57,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-19 08:17:57,280 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:17:57,280 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-19 08:17:57,281 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, checkErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-19 08:17:57,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:17:57,287 INFO L85 PathProgramCache]: Analyzing trace with hash -1259650339, now seen corresponding path program 1 times [2022-11-19 08:17:57,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:17:57,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388585288] [2022-11-19 08:17:57,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:17:57,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:17:57,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:17:57,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:17:57,555 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:17:57,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388585288] [2022-11-19 08:17:57,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388585288] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:17:57,557 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:17:57,557 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 08:17:57,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869902698] [2022-11-19 08:17:57,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:17:57,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:17:57,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:17:57,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:17:57,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:17:57,599 INFO L87 Difference]: Start difference. First operand has 35 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 25 states have internal predecessors, (27), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-19 08:17:57,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:17:57,679 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2022-11-19 08:17:57,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:17:57,681 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 6 [2022-11-19 08:17:57,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:17:57,688 INFO L225 Difference]: With dead ends: 35 [2022-11-19 08:17:57,689 INFO L226 Difference]: Without dead ends: 25 [2022-11-19 08:17:57,691 INFO L412 NwaCegarLoop]: 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 [2022-11-19 08:17:57,695 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 4 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:17:57,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 56 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:17:57,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-11-19 08:17:57,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2022-11-19 08:17:57,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 19 states have internal predecessors, (20), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-19 08:17:57,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2022-11-19 08:17:57,736 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 6 [2022-11-19 08:17:57,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:17:57,737 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2022-11-19 08:17:57,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-19 08:17:57,737 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2022-11-19 08:17:57,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-19 08:17:57,738 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:17:57,738 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:17:57,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 08:17:57,738 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, checkErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-19 08:17:57,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:17:57,739 INFO L85 PathProgramCache]: Analyzing trace with hash -394454805, now seen corresponding path program 1 times [2022-11-19 08:17:57,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:17:57,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100548007] [2022-11-19 08:17:57,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:17:57,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:17:57,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:17:57,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:17:57,894 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:17:57,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100548007] [2022-11-19 08:17:57,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100548007] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:17:57,894 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:17:57,895 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:17:57,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247925294] [2022-11-19 08:17:57,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:17:57,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 08:17:57,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:17:57,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 08:17:57,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 08:17:57,898 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand has 4 states, 2 states have (on average 2.5) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-19 08:17:57,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:17:57,932 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2022-11-19 08:17:57,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 08:17:57,935 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 2 states have (on average 2.5) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2022-11-19 08:17:57,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:17:57,938 INFO L225 Difference]: With dead ends: 25 [2022-11-19 08:17:57,938 INFO L226 Difference]: Without dead ends: 24 [2022-11-19 08:17:57,938 INFO L412 NwaCegarLoop]: 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 [2022-11-19 08:17:57,940 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 1 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 08:17:57,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 50 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 08:17:57,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-11-19 08:17:57,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-11-19 08:17:57,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 18 states have internal predecessors, (19), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-19 08:17:57,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2022-11-19 08:17:57,952 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 7 [2022-11-19 08:17:57,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:17:57,953 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2022-11-19 08:17:57,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 2 states have (on average 2.5) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-19 08:17:57,953 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2022-11-19 08:17:57,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-19 08:17:57,955 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:17:57,956 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:17:57,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 08:17:57,956 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting checkErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, checkErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-19 08:17:57,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:17:57,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1257182402, now seen corresponding path program 1 times [2022-11-19 08:17:57,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:17:57,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401279689] [2022-11-19 08:17:57,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:17:57,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:17:57,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:17:58,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:17:58,065 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:17:58,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401279689] [2022-11-19 08:17:58,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401279689] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:17:58,066 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:17:58,066 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 08:17:58,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192213552] [2022-11-19 08:17:58,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:17:58,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 08:17:58,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:17:58,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 08:17:58,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:17:58,068 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-19 08:17:58,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:17:58,137 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2022-11-19 08:17:58,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 08:17:58,138 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 16 [2022-11-19 08:17:58,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:17:58,139 INFO L225 Difference]: With dead ends: 39 [2022-11-19 08:17:58,140 INFO L226 Difference]: Without dead ends: 37 [2022-11-19 08:17:58,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-19 08:17:58,142 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 19 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 08:17:58,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 60 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 08:17:58,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-11-19 08:17:58,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 34. [2022-11-19 08:17:58,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 26 states have internal predecessors, (30), 6 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-19 08:17:58,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2022-11-19 08:17:58,156 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 16 [2022-11-19 08:17:58,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:17:58,158 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2022-11-19 08:17:58,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-19 08:17:58,159 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2022-11-19 08:17:58,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-19 08:17:58,161 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:17:58,161 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:17:58,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 08:17:58,162 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting checkErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, checkErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-19 08:17:58,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:17:58,165 INFO L85 PathProgramCache]: Analyzing trace with hash 1257182594, now seen corresponding path program 1 times [2022-11-19 08:17:58,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:17:58,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684512707] [2022-11-19 08:17:58,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:17:58,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:17:58,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:17:58,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:17:58,364 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:17:58,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684512707] [2022-11-19 08:17:58,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684512707] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:17:58,365 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:17:58,365 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 08:17:58,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826115269] [2022-11-19 08:17:58,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:17:58,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 08:17:58,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:17:58,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 08:17:58,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-19 08:17:58,368 INFO L87 Difference]: Start difference. First operand 34 states and 39 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, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-19 08:17:58,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:17:58,455 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2022-11-19 08:17:58,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 08:17:58,455 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, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 16 [2022-11-19 08:17:58,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:17:58,456 INFO L225 Difference]: With dead ends: 34 [2022-11-19 08:17:58,456 INFO L226 Difference]: Without dead ends: 33 [2022-11-19 08:17:58,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-19 08:17:58,465 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 22 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:17:58,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 26 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:17:58,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-11-19 08:17:58,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2022-11-19 08:17:58,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 25 states have internal predecessors, (28), 6 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-19 08:17:58,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2022-11-19 08:17:58,479 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 16 [2022-11-19 08:17:58,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:17:58,480 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2022-11-19 08:17:58,480 INFO L496 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, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-19 08:17:58,481 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2022-11-19 08:17:58,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-19 08:17:58,483 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:17:58,483 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:17:58,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 08:17:58,484 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting checkErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, checkErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-19 08:17:58,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:17:58,486 INFO L85 PathProgramCache]: Analyzing trace with hash 317954823, now seen corresponding path program 1 times [2022-11-19 08:17:58,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:17:58,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229004992] [2022-11-19 08:17:58,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:17:58,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:17:58,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:17:58,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:17:58,613 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:17:58,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229004992] [2022-11-19 08:17:58,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229004992] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:17:58,613 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:17:58,613 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-19 08:17:58,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015740333] [2022-11-19 08:17:58,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:17:58,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-19 08:17:58,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:17:58,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-19 08:17:58,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-19 08:17:58,616 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand has 7 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-19 08:17:58,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:17:58,704 INFO L93 Difference]: Finished difference Result 35 states and 38 transitions. [2022-11-19 08:17:58,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 08:17:58,705 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17 [2022-11-19 08:17:58,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:17:58,706 INFO L225 Difference]: With dead ends: 35 [2022-11-19 08:17:58,706 INFO L226 Difference]: Without dead ends: 34 [2022-11-19 08:17:58,707 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-19 08:17:58,708 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 21 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 08:17:58,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 68 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 08:17:58,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-11-19 08:17:58,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2022-11-19 08:17:58,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 25 states have internal predecessors, (27), 6 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-19 08:17:58,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2022-11-19 08:17:58,715 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 17 [2022-11-19 08:17:58,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:17:58,716 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2022-11-19 08:17:58,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-19 08:17:58,716 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2022-11-19 08:17:58,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-19 08:17:58,717 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:17:58,717 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:17:58,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-19 08:17:58,718 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting checkErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, checkErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-19 08:17:58,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:17:58,718 INFO L85 PathProgramCache]: Analyzing trace with hash 1954952880, now seen corresponding path program 1 times [2022-11-19 08:17:58,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:17:58,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412699115] [2022-11-19 08:17:58,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:17:58,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:17:58,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:17:58,904 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 08:17:58,905 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:17:58,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412699115] [2022-11-19 08:17:58,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412699115] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:17:58,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1433103291] [2022-11-19 08:17:58,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:17:58,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:17:58,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be11a726-835d-41fe-ba77-d7727aee1744/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:17:58,911 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be11a726-835d-41fe-ba77-d7727aee1744/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:17:58,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be11a726-835d-41fe-ba77-d7727aee1744/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 08:17:59,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:17:59,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-19 08:17:59,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:17:59,097 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 08:17:59,097 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:17:59,242 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 08:17:59,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1433103291] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:17:59,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1369851864] [2022-11-19 08:17:59,276 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2022-11-19 08:17:59,276 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 08:17:59,282 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-19 08:17:59,291 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 08:17:59,291 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2022-11-19 08:17:59,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87739386] [2022-11-19 08:17:59,292 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 08:17:59,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-19 08:17:59,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:17:59,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-19 08:17:59,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2022-11-19 08:17:59,297 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand has 17 states, 16 states have (on average 2.125) internal successors, (34), 12 states have internal predecessors, (34), 6 states have call successors, (11), 6 states have call predecessors, (11), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-19 08:17:59,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:17:59,634 INFO L93 Difference]: Finished difference Result 74 states and 85 transitions. [2022-11-19 08:17:59,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-19 08:17:59,634 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 12 states have internal predecessors, (34), 6 states have call successors, (11), 6 states have call predecessors, (11), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 26 [2022-11-19 08:17:59,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:17:59,639 INFO L225 Difference]: With dead ends: 74 [2022-11-19 08:17:59,639 INFO L226 Difference]: Without dead ends: 73 [2022-11-19 08:17:59,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=248, Invalid=682, Unknown=0, NotChecked=0, Total=930 [2022-11-19 08:17:59,644 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 105 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:17:59,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 116 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:17:59,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-11-19 08:17:59,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 62. [2022-11-19 08:17:59,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 45 states have (on average 1.288888888888889) internal successors, (58), 48 states have internal predecessors, (58), 12 states have call successors, (12), 7 states have call predecessors, (12), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-19 08:17:59,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 76 transitions. [2022-11-19 08:17:59,668 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 76 transitions. Word has length 26 [2022-11-19 08:17:59,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:17:59,669 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 76 transitions. [2022-11-19 08:17:59,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 12 states have internal predecessors, (34), 6 states have call successors, (11), 6 states have call predecessors, (11), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-19 08:17:59,669 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 76 transitions. [2022-11-19 08:17:59,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-19 08:17:59,671 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:17:59,671 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:17:59,687 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be11a726-835d-41fe-ba77-d7727aee1744/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-19 08:17:59,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be11a726-835d-41fe-ba77-d7727aee1744/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:17:59,877 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting checkErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, checkErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-19 08:17:59,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:17:59,877 INFO L85 PathProgramCache]: Analyzing trace with hash 473997203, now seen corresponding path program 1 times [2022-11-19 08:17:59,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:17:59,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170450297] [2022-11-19 08:17:59,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:17:59,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:17:59,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:18:00,055 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 08:18:00,055 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:18:00,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170450297] [2022-11-19 08:18:00,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170450297] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:18:00,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [943299682] [2022-11-19 08:18:00,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:18:00,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:18:00,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be11a726-835d-41fe-ba77-d7727aee1744/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:18:00,060 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be11a726-835d-41fe-ba77-d7727aee1744/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:18:00,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be11a726-835d-41fe-ba77-d7727aee1744/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-19 08:18:00,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:18:00,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-19 08:18:00,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:18:00,217 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 08:18:00,225 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:18:00,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [943299682] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:18:00,226 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 08:18:00,227 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 10 [2022-11-19 08:18:00,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007109191] [2022-11-19 08:18:00,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:18:00,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-19 08:18:00,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:18:00,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-19 08:18:00,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-11-19 08:18:00,229 INFO L87 Difference]: Start difference. First operand 62 states and 76 transitions. Second operand has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-19 08:18:00,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:18:00,345 INFO L93 Difference]: Finished difference Result 63 states and 77 transitions. [2022-11-19 08:18:00,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-19 08:18:00,345 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 27 [2022-11-19 08:18:00,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:18:00,349 INFO L225 Difference]: With dead ends: 63 [2022-11-19 08:18:00,349 INFO L226 Difference]: Without dead ends: 62 [2022-11-19 08:18:00,350 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2022-11-19 08:18:00,352 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 34 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:18:00,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 56 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:18:00,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-11-19 08:18:00,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2022-11-19 08:18:00,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 45 states have (on average 1.2222222222222223) internal successors, (55), 47 states have internal predecessors, (55), 12 states have call successors, (12), 7 states have call predecessors, (12), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-19 08:18:00,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 73 transitions. [2022-11-19 08:18:00,381 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 73 transitions. Word has length 27 [2022-11-19 08:18:00,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:18:00,382 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 73 transitions. [2022-11-19 08:18:00,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-19 08:18:00,389 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 73 transitions. [2022-11-19 08:18:00,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-19 08:18:00,390 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:18:00,390 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:18:00,396 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be11a726-835d-41fe-ba77-d7727aee1744/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-19 08:18:00,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be11a726-835d-41fe-ba77-d7727aee1744/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:18:00,596 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting checkErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, checkErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-19 08:18:00,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:18:00,597 INFO L85 PathProgramCache]: Analyzing trace with hash 474003161, now seen corresponding path program 1 times [2022-11-19 08:18:00,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:18:00,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388345422] [2022-11-19 08:18:00,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:18:00,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:18:00,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:18:00,719 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 08:18:00,719 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:18:00,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388345422] [2022-11-19 08:18:00,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388345422] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:18:00,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [160746602] [2022-11-19 08:18:00,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:18:00,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:18:00,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be11a726-835d-41fe-ba77-d7727aee1744/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:18:00,721 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be11a726-835d-41fe-ba77-d7727aee1744/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:18:00,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be11a726-835d-41fe-ba77-d7727aee1744/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-19 08:18:00,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:18:00,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-19 08:18:00,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:18:00,919 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 08:18:00,919 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:18:01,085 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 08:18:01,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [160746602] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:18:01,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1631957958] [2022-11-19 08:18:01,088 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2022-11-19 08:18:01,088 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 08:18:01,089 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-19 08:18:01,090 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 08:18:01,090 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 21 [2022-11-19 08:18:01,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156793763] [2022-11-19 08:18:01,090 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 08:18:01,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-19 08:18:01,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:18:01,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-19 08:18:01,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=390, Unknown=0, NotChecked=0, Total=462 [2022-11-19 08:18:01,092 INFO L87 Difference]: Start difference. First operand 61 states and 73 transitions. Second operand has 22 states, 21 states have (on average 2.0) internal successors, (42), 16 states have internal predecessors, (42), 9 states have call successors, (13), 7 states have call predecessors, (13), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-19 08:18:01,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:18:01,408 INFO L93 Difference]: Finished difference Result 65 states and 77 transitions. [2022-11-19 08:18:01,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-19 08:18:01,409 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.0) internal successors, (42), 16 states have internal predecessors, (42), 9 states have call successors, (13), 7 states have call predecessors, (13), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Word has length 27 [2022-11-19 08:18:01,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:18:01,410 INFO L225 Difference]: With dead ends: 65 [2022-11-19 08:18:01,410 INFO L226 Difference]: Without dead ends: 64 [2022-11-19 08:18:01,411 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=233, Invalid=823, Unknown=0, NotChecked=0, Total=1056 [2022-11-19 08:18:01,411 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 103 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 08:18:01,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 78 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 08:18:01,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-11-19 08:18:01,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 60. [2022-11-19 08:18:01,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 45 states have (on average 1.1333333333333333) internal successors, (51), 46 states have internal predecessors, (51), 12 states have call successors, (12), 7 states have call predecessors, (12), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-19 08:18:01,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 69 transitions. [2022-11-19 08:18:01,421 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 69 transitions. Word has length 27 [2022-11-19 08:18:01,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:18:01,421 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 69 transitions. [2022-11-19 08:18:01,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.0) internal successors, (42), 16 states have internal predecessors, (42), 9 states have call successors, (13), 7 states have call predecessors, (13), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-19 08:18:01,422 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 69 transitions. [2022-11-19 08:18:01,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-19 08:18:01,423 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:18:01,423 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:18:01,435 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be11a726-835d-41fe-ba77-d7727aee1744/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-19 08:18:01,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be11a726-835d-41fe-ba77-d7727aee1744/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:18:01,629 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting checkErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, checkErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-19 08:18:01,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:18:01,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1802980486, now seen corresponding path program 2 times [2022-11-19 08:18:01,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:18:01,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740090903] [2022-11-19 08:18:01,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:18:01,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:18:01,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:18:02,004 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-19 08:18:02,004 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:18:02,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740090903] [2022-11-19 08:18:02,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740090903] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:18:02,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [988166267] [2022-11-19 08:18:02,005 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 08:18:02,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:18:02,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be11a726-835d-41fe-ba77-d7727aee1744/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:18:02,008 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be11a726-835d-41fe-ba77-d7727aee1744/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:18:02,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be11a726-835d-41fe-ba77-d7727aee1744/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-19 08:18:02,132 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-19 08:18:02,132 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 08:18:02,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-19 08:18:02,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:18:02,369 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-19 08:18:02,370 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:18:02,639 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-19 08:18:02,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [988166267] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:18:02,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [938229296] [2022-11-19 08:18:02,644 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2022-11-19 08:18:02,644 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 08:18:02,645 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-19 08:18:02,646 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 08:18:02,646 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 8, 8] total 29 [2022-11-19 08:18:02,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149729120] [2022-11-19 08:18:02,647 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 08:18:02,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-19 08:18:02,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:18:02,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-19 08:18:02,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=752, Unknown=0, NotChecked=0, Total=870 [2022-11-19 08:18:02,651 INFO L87 Difference]: Start difference. First operand 60 states and 69 transitions. Second operand has 30 states, 26 states have (on average 2.4615384615384617) internal successors, (64), 23 states have internal predecessors, (64), 12 states have call successors, (21), 8 states have call predecessors, (21), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-19 08:18:03,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:18:03,913 INFO L93 Difference]: Finished difference Result 77 states and 89 transitions. [2022-11-19 08:18:03,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-19 08:18:03,914 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 26 states have (on average 2.4615384615384617) internal successors, (64), 23 states have internal predecessors, (64), 12 states have call successors, (21), 8 states have call predecessors, (21), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Word has length 56 [2022-11-19 08:18:03,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:18:03,915 INFO L225 Difference]: With dead ends: 77 [2022-11-19 08:18:03,915 INFO L226 Difference]: Without dead ends: 0 [2022-11-19 08:18:03,919 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1131 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1100, Invalid=3592, Unknown=0, NotChecked=0, Total=4692 [2022-11-19 08:18:03,922 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 350 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 08:18:03,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [350 Valid, 59 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 381 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 08:18:03,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-19 08:18:03,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-19 08:18:03,924 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) [2022-11-19 08:18:03,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-19 08:18:03,924 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 56 [2022-11-19 08:18:03,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:18:03,925 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-19 08:18:03,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 26 states have (on average 2.4615384615384617) internal successors, (64), 23 states have internal predecessors, (64), 12 states have call successors, (21), 8 states have call predecessors, (21), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-19 08:18:03,925 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-19 08:18:03,925 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-19 08:18:03,928 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 6 remaining) [2022-11-19 08:18:03,929 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 6 remaining) [2022-11-19 08:18:03,930 INFO L805 garLoopResultBuilder]: Registering result SAFE for location checkErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 6 remaining) [2022-11-19 08:18:03,930 INFO L805 garLoopResultBuilder]: Registering result SAFE for location checkErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 6 remaining) [2022-11-19 08:18:03,930 INFO L805 garLoopResultBuilder]: Registering result SAFE for location checkErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 6 remaining) [2022-11-19 08:18:03,930 INFO L805 garLoopResultBuilder]: Registering result SAFE for location checkErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 6 remaining) [2022-11-19 08:18:03,948 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be11a726-835d-41fe-ba77-d7727aee1744/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-19 08:18:04,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be11a726-835d-41fe-ba77-d7727aee1744/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:18:04,146 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-19 08:18:05,062 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 46) no Hoare annotation was computed. [2022-11-19 08:18:05,063 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-19 08:18:05,063 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 46) no Hoare annotation was computed. [2022-11-19 08:18:05,063 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-19 08:18:05,063 INFO L899 garLoopResultBuilder]: For program point L46(line 46) no Hoare annotation was computed. [2022-11-19 08:18:05,063 INFO L899 garLoopResultBuilder]: For program point L46-1(line 46) no Hoare annotation was computed. [2022-11-19 08:18:05,063 INFO L895 garLoopResultBuilder]: At program point L44(line 44) the Hoare annotation is: (<= |ULTIMATE.start_main_~n~0#1| 2147483647) [2022-11-19 08:18:05,064 INFO L895 garLoopResultBuilder]: At program point L46-2(line 46) the Hoare annotation is: (and (< |ULTIMATE.start_main_~n~0#1| 1073741824) (<= 0 |ULTIMATE.start_main_~n~0#1|)) [2022-11-19 08:18:05,064 INFO L899 garLoopResultBuilder]: For program point L44-1(line 44) no Hoare annotation was computed. [2022-11-19 08:18:05,064 INFO L895 garLoopResultBuilder]: At program point L46-3(line 46) the Hoare annotation is: (<= |ULTIMATE.start_main_~n~0#1| 2147483647) [2022-11-19 08:18:05,064 INFO L902 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 7 9) the Hoare annotation is: true [2022-11-19 08:18:05,064 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 7 9) no Hoare annotation was computed. [2022-11-19 08:18:05,064 INFO L899 garLoopResultBuilder]: For program point checkErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2022-11-19 08:18:05,064 INFO L902 garLoopResultBuilder]: At program point L33(line 33) the Hoare annotation is: true [2022-11-19 08:18:05,065 INFO L899 garLoopResultBuilder]: For program point L33-1(line 33) no Hoare annotation was computed. [2022-11-19 08:18:05,065 INFO L902 garLoopResultBuilder]: At program point checkENTRY(lines 16 39) the Hoare annotation is: true [2022-11-19 08:18:05,065 INFO L899 garLoopResultBuilder]: For program point checkErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 26) no Hoare annotation was computed. [2022-11-19 08:18:05,065 INFO L899 garLoopResultBuilder]: For program point L25(lines 25 26) no Hoare annotation was computed. [2022-11-19 08:18:05,065 INFO L899 garLoopResultBuilder]: For program point L25-1(line 25) no Hoare annotation was computed. [2022-11-19 08:18:05,065 INFO L899 garLoopResultBuilder]: For program point L25-2(line 25) no Hoare annotation was computed. [2022-11-19 08:18:05,066 INFO L895 garLoopResultBuilder]: At program point L25-4(lines 25 26) the Hoare annotation is: (let ((.cse5 (<= |check_#in~y| 2147483646))) (let ((.cse4 (<= check_~n 2147483647)) (.cse6 (<= 1 check_~y)) (.cse7 (<= 1 check_~x)) (.cse8 (<= check_~y 2147483646)) (.cse0 (not .cse5)) (.cse1 (not (<= 1 |check_#in~x|))) (.cse2 (not (<= |check_#in~n| 2147483647))) (.cse3 (not (<= 1 |check_#in~y|)))) (and (or .cse0 .cse1 .cse2 .cse3 (and .cse4 .cse5 .cse6 (< check_~x 2147483647) .cse7 .cse8)) (or .cse0 .cse1 (<= check_~x 2) .cse2 (not (<= |check_#in~x| 1)) .cse3) (or .cse0 .cse1 (<= check_~x 3) .cse2 .cse3 (not (<= |check_#in~x| 2))) (or .cse0 (not (= |check_#in~x| 0)) .cse2 (and .cse4 (= check_~x 0) (< 0 (+ check_~y 2147483648)) .cse8) (and .cse4 .cse5 .cse6 (<= check_~x 1) .cse7 .cse8)) (or .cse0 .cse1 .cse2 (<= check_~x 4) .cse3 (not (<= |check_#in~x| 3)))))) [2022-11-19 08:18:05,066 INFO L899 garLoopResultBuilder]: For program point L17(line 17) no Hoare annotation was computed. [2022-11-19 08:18:05,066 INFO L899 garLoopResultBuilder]: For program point checkFINAL(lines 16 39) no Hoare annotation was computed. [2022-11-19 08:18:05,067 INFO L902 garLoopResultBuilder]: At program point L36(line 36) the Hoare annotation is: true [2022-11-19 08:18:05,067 INFO L899 garLoopResultBuilder]: For program point L36-1(line 36) no Hoare annotation was computed. [2022-11-19 08:18:05,067 INFO L899 garLoopResultBuilder]: For program point checkErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 26) no Hoare annotation was computed. [2022-11-19 08:18:05,067 INFO L899 garLoopResultBuilder]: For program point L28(line 28) no Hoare annotation was computed. [2022-11-19 08:18:05,067 INFO L899 garLoopResultBuilder]: For program point checkErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2022-11-19 08:18:05,067 INFO L899 garLoopResultBuilder]: For program point L26(line 26) no Hoare annotation was computed. [2022-11-19 08:18:05,068 INFO L899 garLoopResultBuilder]: For program point L26-1(line 26) no Hoare annotation was computed. [2022-11-19 08:18:05,068 INFO L895 garLoopResultBuilder]: At program point L20(line 20) the Hoare annotation is: (let ((.cse1 (not (<= 1 |check_#in~x|))) (.cse3 (not (<= 1 |check_#in~y|))) (.cse0 (not (<= |check_#in~y| 2147483646))) (.cse4 (<= check_~n 2147483647)) (.cse5 (<= check_~y 2147483646)) (.cse2 (not (<= |check_#in~n| 2147483647)))) (and (or .cse0 .cse1 .cse2 (not (<= |check_#in~x| 1)) .cse3 (<= check_~x 1)) (or .cse0 .cse1 .cse2 (<= check_~x 4) .cse3 (not (<= |check_#in~x| 4))) (or .cse0 .cse1 .cse2 .cse3 (and .cse4 (not (<= check_~y check_~x)) (<= 1 check_~x) .cse5)) (or .cse0 .cse1 (<= check_~x 3) .cse2 .cse3 (not (<= |check_#in~x| 3))) (or .cse0 .cse1 (<= check_~x 2) .cse2 .cse3 (not (<= |check_#in~x| 2))) (or .cse0 (and .cse4 (<= (+ check_~x 1) check_~y) (= check_~x 0) .cse5) (not (= |check_#in~x| 0)) .cse2))) [2022-11-19 08:18:05,068 INFO L899 garLoopResultBuilder]: For program point L20-1(line 20) no Hoare annotation was computed. [2022-11-19 08:18:05,068 INFO L899 garLoopResultBuilder]: For program point checkEXIT(lines 16 39) no Hoare annotation was computed. [2022-11-19 08:18:05,069 INFO L902 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 10 12) the Hoare annotation is: true [2022-11-19 08:18:05,069 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 10 12) no Hoare annotation was computed. [2022-11-19 08:18:05,072 INFO L444 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:18:05,074 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-19 08:18:05,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 08:18:05 BoogieIcfgContainer [2022-11-19 08:18:05,087 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-19 08:18:05,088 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-19 08:18:05,088 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-19 08:18:05,088 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-19 08:18:05,088 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:17:57" (3/4) ... [2022-11-19 08:18:05,091 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-19 08:18:05,096 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2022-11-19 08:18:05,097 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure check [2022-11-19 08:18:05,097 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2022-11-19 08:18:05,101 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 24 nodes and edges [2022-11-19 08:18:05,102 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2022-11-19 08:18:05,102 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-19 08:18:05,102 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-19 08:18:05,138 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be11a726-835d-41fe-ba77-d7727aee1744/bin/utaipan-I9t0OCRTmS/witness.graphml [2022-11-19 08:18:05,138 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-19 08:18:05,139 INFO L158 Benchmark]: Toolchain (without parser) took 8912.10ms. Allocated memory was 127.9MB in the beginning and 195.0MB in the end (delta: 67.1MB). Free memory was 94.5MB in the beginning and 89.3MB in the end (delta: 5.1MB). Peak memory consumption was 72.2MB. Max. memory is 16.1GB. [2022-11-19 08:18:05,139 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 88.1MB. Free memory was 41.7MB in the beginning and 41.6MB in the end (delta: 45.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 08:18:05,140 INFO L158 Benchmark]: CACSL2BoogieTranslator took 327.39ms. Allocated memory is still 127.9MB. Free memory was 94.2MB in the beginning and 103.0MB in the end (delta: -8.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-19 08:18:05,140 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.28ms. Allocated memory is still 127.9MB. Free memory was 103.0MB in the beginning and 101.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 08:18:05,140 INFO L158 Benchmark]: Boogie Preprocessor took 49.74ms. Allocated memory is still 127.9MB. Free memory was 101.3MB in the beginning and 100.1MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 08:18:05,141 INFO L158 Benchmark]: RCFGBuilder took 527.10ms. Allocated memory is still 127.9MB. Free memory was 100.1MB in the beginning and 86.2MB in the end (delta: 13.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-19 08:18:05,141 INFO L158 Benchmark]: TraceAbstraction took 7903.78ms. Allocated memory was 127.9MB in the beginning and 195.0MB in the end (delta: 67.1MB). Free memory was 85.5MB in the beginning and 92.5MB in the end (delta: -7.0MB). Peak memory consumption was 62.6MB. Max. memory is 16.1GB. [2022-11-19 08:18:05,142 INFO L158 Benchmark]: Witness Printer took 50.78ms. Allocated memory is still 195.0MB. Free memory was 92.5MB in the beginning and 89.3MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 08:18:05,144 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 88.1MB. Free memory was 41.7MB in the beginning and 41.6MB in the end (delta: 45.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 327.39ms. Allocated memory is still 127.9MB. Free memory was 94.2MB in the beginning and 103.0MB in the end (delta: -8.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.28ms. Allocated memory is still 127.9MB. Free memory was 103.0MB in the beginning and 101.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 49.74ms. Allocated memory is still 127.9MB. Free memory was 101.3MB in the beginning and 100.1MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 527.10ms. Allocated memory is still 127.9MB. Free memory was 100.1MB in the beginning and 86.2MB in the end (delta: 13.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 7903.78ms. Allocated memory was 127.9MB in the beginning and 195.0MB in the end (delta: 67.1MB). Free memory was 85.5MB in the beginning and 92.5MB in the end (delta: -7.0MB). Peak memory consumption was 62.6MB. Max. memory is 16.1GB. * Witness Printer took 50.78ms. Allocated memory is still 195.0MB. Free memory was 92.5MB in the beginning and 89.3MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 46]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 46]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 26]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 26]: 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 4 procedures, 35 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 7.8s, OverallIterations: 9, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.9s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 660 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 659 mSDsluCounter, 569 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 422 mSDsCounter, 110 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1055 IncrementalHoareTripleChecker+Invalid, 1165 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 110 mSolverCounterUnsat, 147 mSDtfsCounter, 1055 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 379 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1528 ImplicationChecksByTransitivity, 2.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=62occurred in iteration=6, InterpolantAutomatonStates: 114, 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, 9 MinimizatonAttempts, 20 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 77 PreInvPairs, 90 NumberOfFragments, 330 HoareAnnotationTreeSize, 77 FomulaSimplifications, 82 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 10 FomulaSimplificationsInter, 2144 FormulaSimplificationTreeSizeReductionInter, 0.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 334 NumberOfCodeBlocks, 334 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 427 ConstructedInterpolants, 0 QuantifiedInterpolants, 1070 SizeOfPredicates, 25 NumberOfNonLiveVariables, 756 ConjunctsInSsa, 44 ConjunctsInUnsatCore, 16 InterpolantComputations, 6 PerfectInterpolantSequences, 203/339 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 6 specifications checked. All of them hold - InvariantResult [Line: 46]: Loop Invariant Derived loop invariant: n <= 2147483647 RESULT: Ultimate proved your program to be correct! [2022-11-19 08:18:05,166 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be11a726-835d-41fe-ba77-d7727aee1744/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE