./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench/fermat1-ll.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97b9536-2ff6-4064-ba98-e3fcf29337e1/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97b9536-2ff6-4064-ba98-e3fcf29337e1/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_f97b9536-2ff6-4064-ba98-e3fcf29337e1/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97b9536-2ff6-4064-ba98-e3fcf29337e1/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench/fermat1-ll.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97b9536-2ff6-4064-ba98-e3fcf29337e1/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97b9536-2ff6-4064-ba98-e3fcf29337e1/bin/utaipan-I9t0OCRTmS --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c5787d4099664297951b30a30ca371dd536df07843738ed8698fe723430a974c --- 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 07:48:57,820 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:48:57,822 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:48:57,854 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:48:57,855 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:48:57,856 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:48:57,858 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:48:57,860 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:48:57,862 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:48:57,868 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:48:57,869 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:48:57,873 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:48:57,874 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:48:57,881 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:48:57,884 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:48:57,886 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:48:57,888 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:48:57,891 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:48:57,894 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:48:57,902 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:48:57,904 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:48:57,905 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:48:57,909 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:48:57,910 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:48:57,919 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:48:57,920 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:48:57,920 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:48:57,922 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:48:57,922 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:48:57,923 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:48:57,924 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:48:57,926 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:48:57,928 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:48:57,929 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:48:57,931 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:48:57,932 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:48:57,933 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:48:57,933 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:48:57,933 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:48:57,934 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:48:57,935 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:48:57,936 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97b9536-2ff6-4064-ba98-e3fcf29337e1/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-19 07:48:57,984 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:48:57,985 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:48:57,986 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:48:57,986 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:48:57,987 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:48:57,987 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:48:57,988 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:48:57,988 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:48:57,988 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:48:57,988 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:48:57,989 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:48:57,990 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:48:57,990 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:48:57,990 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:48:57,991 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:48:57,991 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:48:57,991 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:48:57,991 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:48:57,992 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:48:57,992 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 07:48:57,993 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:48:57,993 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 07:48:57,993 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:48:57,993 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:48:57,994 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:48:57,994 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:48:57,994 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 07:48:57,996 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:48:57,996 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:48:57,996 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:48:57,997 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:48:57,997 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:48:57,997 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:48:57,998 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:48:57,998 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:48:57,998 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:48:57,999 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:48:57,999 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:48:57,999 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:48:57,999 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:48:58,000 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:48:58,001 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_f97b9536-2ff6-4064-ba98-e3fcf29337e1/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97b9536-2ff6-4064-ba98-e3fcf29337e1/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c5787d4099664297951b30a30ca371dd536df07843738ed8698fe723430a974c [2022-11-19 07:48:58,279 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:48:58,307 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:48:58,317 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:48:58,318 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:48:58,320 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:48:58,321 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97b9536-2ff6-4064-ba98-e3fcf29337e1/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/nla-digbench/fermat1-ll.c [2022-11-19 07:48:58,394 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97b9536-2ff6-4064-ba98-e3fcf29337e1/bin/utaipan-I9t0OCRTmS/data/989376587/d6e96bed4b3a44e6b16693652ffbbe70/FLAG66ef51eb7 [2022-11-19 07:48:58,972 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:48:58,972 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97b9536-2ff6-4064-ba98-e3fcf29337e1/sv-benchmarks/c/nla-digbench/fermat1-ll.c [2022-11-19 07:48:58,984 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97b9536-2ff6-4064-ba98-e3fcf29337e1/bin/utaipan-I9t0OCRTmS/data/989376587/d6e96bed4b3a44e6b16693652ffbbe70/FLAG66ef51eb7 [2022-11-19 07:48:59,314 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97b9536-2ff6-4064-ba98-e3fcf29337e1/bin/utaipan-I9t0OCRTmS/data/989376587/d6e96bed4b3a44e6b16693652ffbbe70 [2022-11-19 07:48:59,317 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:48:59,318 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:48:59,320 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:48:59,320 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:48:59,326 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:48:59,327 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:48:59" (1/1) ... [2022-11-19 07:48:59,328 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@432d22f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:59, skipping insertion in model container [2022-11-19 07:48:59,329 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:48:59" (1/1) ... [2022-11-19 07:48:59,337 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:48:59,356 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:48:59,550 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_f97b9536-2ff6-4064-ba98-e3fcf29337e1/sv-benchmarks/c/nla-digbench/fermat1-ll.c[535,548] [2022-11-19 07:48:59,569 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:48:59,578 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:48:59,591 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_f97b9536-2ff6-4064-ba98-e3fcf29337e1/sv-benchmarks/c/nla-digbench/fermat1-ll.c[535,548] [2022-11-19 07:48:59,600 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:48:59,614 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:48:59,614 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:59 WrapperNode [2022-11-19 07:48:59,615 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:48:59,616 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:48:59,616 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:48:59,616 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:48:59,624 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:59" (1/1) ... [2022-11-19 07:48:59,631 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:59" (1/1) ... [2022-11-19 07:48:59,649 INFO L138 Inliner]: procedures = 14, calls = 13, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 54 [2022-11-19 07:48:59,650 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:48:59,650 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:48:59,650 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:48:59,651 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:48:59,658 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:59" (1/1) ... [2022-11-19 07:48:59,658 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:59" (1/1) ... [2022-11-19 07:48:59,660 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:59" (1/1) ... [2022-11-19 07:48:59,660 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:59" (1/1) ... [2022-11-19 07:48:59,663 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:59" (1/1) ... [2022-11-19 07:48:59,668 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:59" (1/1) ... [2022-11-19 07:48:59,669 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:59" (1/1) ... [2022-11-19 07:48:59,670 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:59" (1/1) ... [2022-11-19 07:48:59,672 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:48:59,673 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:48:59,673 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:48:59,673 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:48:59,679 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:59" (1/1) ... [2022-11-19 07:48:59,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:48:59,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97b9536-2ff6-4064-ba98-e3fcf29337e1/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:48:59,714 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97b9536-2ff6-4064-ba98-e3fcf29337e1/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:48:59,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97b9536-2ff6-4064-ba98-e3fcf29337e1/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:48:59,760 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:48:59,761 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-19 07:48:59,761 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-19 07:48:59,761 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 07:48:59,761 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:48:59,761 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:48:59,761 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-19 07:48:59,761 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-19 07:48:59,832 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:48:59,834 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:49:00,084 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:49:00,107 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:49:00,107 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-19 07:49:00,110 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:49:00 BoogieIcfgContainer [2022-11-19 07:49:00,110 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:49:00,112 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:49:00,112 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:49:00,116 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:49:00,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:48:59" (1/3) ... [2022-11-19 07:49:00,117 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@573d3108 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:49:00, skipping insertion in model container [2022-11-19 07:49:00,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:59" (2/3) ... [2022-11-19 07:49:00,117 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@573d3108 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:49:00, skipping insertion in model container [2022-11-19 07:49:00,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:49:00" (3/3) ... [2022-11-19 07:49:00,119 INFO L112 eAbstractionObserver]: Analyzing ICFG fermat1-ll.c [2022-11-19 07:49:00,140 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:49:00,141 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 07:49:00,222 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:49:00,232 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;@3a0d9f73, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:49:00,232 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 07:49:00,237 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 15 states have internal predecessors, (22), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-19 07:49:00,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-19 07:49:00,247 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:49:00,248 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:49:00,250 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:49:00,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:49:00,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1148820818, now seen corresponding path program 1 times [2022-11-19 07:49:00,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:49:00,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006757015] [2022-11-19 07:49:00,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:49:00,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:49:00,398 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 07:49:00,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [709634845] [2022-11-19 07:49:00,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:49:00,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:49:00,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97b9536-2ff6-4064-ba98-e3fcf29337e1/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:49:00,407 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97b9536-2ff6-4064-ba98-e3fcf29337e1/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:49:00,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97b9536-2ff6-4064-ba98-e3fcf29337e1/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 07:49:00,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:49:00,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-19 07:49:00,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:49:00,587 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 07:49:00,587 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:49:00,588 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:49:00,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006757015] [2022-11-19 07:49:00,589 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 07:49:00,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [709634845] [2022-11-19 07:49:00,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [709634845] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:49:00,591 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:49:00,591 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 07:49:00,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768074156] [2022-11-19 07:49:00,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:49:00,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-19 07:49:00,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:49:00,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-19 07:49:00,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 07:49:00,658 INFO L87 Difference]: Start difference. First operand has 24 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 15 states have internal predecessors, (22), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-19 07:49:00,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:49:00,722 INFO L93 Difference]: Finished difference Result 42 states and 65 transitions. [2022-11-19 07:49:00,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-19 07:49:00,725 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 13 [2022-11-19 07:49:00,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:49:00,736 INFO L225 Difference]: With dead ends: 42 [2022-11-19 07:49:00,737 INFO L226 Difference]: Without dead ends: 22 [2022-11-19 07:49:00,741 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 07:49:00,745 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:49:00,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 27 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:49:00,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-11-19 07:49:00,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-11-19 07:49:00,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-19 07:49:00,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 28 transitions. [2022-11-19 07:49:00,795 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 28 transitions. Word has length 13 [2022-11-19 07:49:00,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:49:00,796 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 28 transitions. [2022-11-19 07:49:00,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-19 07:49:00,797 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 28 transitions. [2022-11-19 07:49:00,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-19 07:49:00,799 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:49:00,799 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:49:00,815 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97b9536-2ff6-4064-ba98-e3fcf29337e1/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-19 07:49:01,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97b9536-2ff6-4064-ba98-e3fcf29337e1/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-19 07:49:01,006 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:49:01,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:49:01,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1227498849, now seen corresponding path program 1 times [2022-11-19 07:49:01,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:49:01,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532235654] [2022-11-19 07:49:01,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:49:01,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:49:01,027 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 07:49:01,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [457633103] [2022-11-19 07:49:01,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:49:01,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:49:01,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97b9536-2ff6-4064-ba98-e3fcf29337e1/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:49:01,042 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97b9536-2ff6-4064-ba98-e3fcf29337e1/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:49:01,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97b9536-2ff6-4064-ba98-e3fcf29337e1/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-19 07:49:01,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:49:01,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-19 07:49:01,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:49:01,481 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 07:49:01,484 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:49:01,484 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:49:01,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532235654] [2022-11-19 07:49:01,485 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 07:49:01,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [457633103] [2022-11-19 07:49:01,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [457633103] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:49:01,488 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:49:01,489 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-19 07:49:01,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084908598] [2022-11-19 07:49:01,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:49:01,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-19 07:49:01,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:49:01,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-19 07:49:01,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:49:01,496 INFO L87 Difference]: Start difference. First operand 22 states and 28 transitions. Second operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-19 07:49:03,002 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-19 07:49:05,005 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-19 07:49:08,455 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-19 07:49:10,293 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-19 07:49:10,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:49:10,348 INFO L93 Difference]: Finished difference Result 38 states and 49 transitions. [2022-11-19 07:49:10,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 07:49:10,349 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 13 [2022-11-19 07:49:10,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:49:10,350 INFO L225 Difference]: With dead ends: 38 [2022-11-19 07:49:10,350 INFO L226 Difference]: Without dead ends: 36 [2022-11-19 07:49:10,351 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-19 07:49:10,352 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 23 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2022-11-19 07:49:10,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 55 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 109 Invalid, 1 Unknown, 0 Unchecked, 8.8s Time] [2022-11-19 07:49:10,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-11-19 07:49:10,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2022-11-19 07:49:10,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 23 states have internal predecessors, (29), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-19 07:49:10,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 46 transitions. [2022-11-19 07:49:10,369 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 46 transitions. Word has length 13 [2022-11-19 07:49:10,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:49:10,369 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 46 transitions. [2022-11-19 07:49:10,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-19 07:49:10,370 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 46 transitions. [2022-11-19 07:49:10,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-19 07:49:10,370 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:49:10,370 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:49:10,389 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97b9536-2ff6-4064-ba98-e3fcf29337e1/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-19 07:49:10,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97b9536-2ff6-4064-ba98-e3fcf29337e1/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-11-19 07:49:10,577 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:49:10,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:49:10,578 INFO L85 PathProgramCache]: Analyzing trace with hash 331459558, now seen corresponding path program 1 times [2022-11-19 07:49:10,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:49:10,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726472523] [2022-11-19 07:49:10,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:49:10,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:49:10,590 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 07:49:10,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [680705590] [2022-11-19 07:49:10,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:49:10,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:49:10,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97b9536-2ff6-4064-ba98-e3fcf29337e1/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:49:10,592 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97b9536-2ff6-4064-ba98-e3fcf29337e1/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:49:10,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97b9536-2ff6-4064-ba98-e3fcf29337e1/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-19 07:49:10,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:49:10,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-19 07:49:10,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:49:10,777 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 07:49:10,777 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:49:10,985 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 07:49:10,986 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:49:10,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726472523] [2022-11-19 07:49:10,986 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 07:49:10,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [680705590] [2022-11-19 07:49:10,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [680705590] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:49:10,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1062293558] [2022-11-19 07:49:11,010 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2022-11-19 07:49:11,011 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:49:11,015 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:49:11,020 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:49:11,021 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:49:11,487 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 38 for LOIs [2022-11-19 07:49:11,501 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 93 for LOIs [2022-11-19 07:49:11,583 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:49:18,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1062293558] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:49:18,964 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-19 07:49:18,964 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [8, 7] total 20 [2022-11-19 07:49:18,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118795046] [2022-11-19 07:49:18,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:49:18,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-19 07:49:18,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:49:18,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-19 07:49:18,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2022-11-19 07:49:18,967 INFO L87 Difference]: Start difference. First operand 35 states and 46 transitions. Second operand has 11 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-19 07:49:19,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:49:19,334 INFO L93 Difference]: Finished difference Result 55 states and 70 transitions. [2022-11-19 07:49:19,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-19 07:49:19,335 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 19 [2022-11-19 07:49:19,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:49:19,337 INFO L225 Difference]: With dead ends: 55 [2022-11-19 07:49:19,337 INFO L226 Difference]: Without dead ends: 48 [2022-11-19 07:49:19,337 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 34 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2022-11-19 07:49:19,339 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 54 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 53 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-19 07:49:19,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 62 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 83 Invalid, 0 Unknown, 53 Unchecked, 0.3s Time] [2022-11-19 07:49:19,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-11-19 07:49:19,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2022-11-19 07:49:19,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 31 states have (on average 1.2903225806451613) internal successors, (40), 32 states have internal predecessors, (40), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-19 07:49:19,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 63 transitions. [2022-11-19 07:49:19,372 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 63 transitions. Word has length 19 [2022-11-19 07:49:19,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:49:19,372 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 63 transitions. [2022-11-19 07:49:19,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-19 07:49:19,373 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 63 transitions. [2022-11-19 07:49:19,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-19 07:49:19,374 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:49:19,374 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:49:19,387 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97b9536-2ff6-4064-ba98-e3fcf29337e1/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-19 07:49:19,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97b9536-2ff6-4064-ba98-e3fcf29337e1/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:49:19,580 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:49:19,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:49:19,581 INFO L85 PathProgramCache]: Analyzing trace with hash 2125265906, now seen corresponding path program 1 times [2022-11-19 07:49:19,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:49:19,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198114192] [2022-11-19 07:49:19,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:49:19,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:49:19,590 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 07:49:19,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [142883019] [2022-11-19 07:49:19,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:49:19,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:49:19,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97b9536-2ff6-4064-ba98-e3fcf29337e1/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:49:19,599 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97b9536-2ff6-4064-ba98-e3fcf29337e1/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:49:19,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97b9536-2ff6-4064-ba98-e3fcf29337e1/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-19 07:49:19,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:49:19,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-19 07:49:19,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:49:19,886 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-19 07:49:19,886 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:49:20,132 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-19 07:49:20,132 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:49:20,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198114192] [2022-11-19 07:49:20,133 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 07:49:20,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [142883019] [2022-11-19 07:49:20,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [142883019] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:49:20,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [59554811] [2022-11-19 07:49:20,136 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2022-11-19 07:49:20,136 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:49:20,136 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:49:20,137 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:49:20,137 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:49:21,323 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 84 for LOIs [2022-11-19 07:49:21,462 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 93 for LOIs [2022-11-19 07:49:21,499 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:49:30,780 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '767#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-19 07:49:30,780 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 07:49:30,780 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-19 07:49:30,781 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6] total 12 [2022-11-19 07:49:30,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020844997] [2022-11-19 07:49:30,781 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-19 07:49:30,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-19 07:49:30,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:49:30,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-19 07:49:30,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=513, Unknown=1, NotChecked=0, Total=600 [2022-11-19 07:49:30,783 INFO L87 Difference]: Start difference. First operand 48 states and 63 transitions. Second operand has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 11 states have internal predecessors, (26), 5 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-19 07:49:31,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:49:31,275 INFO L93 Difference]: Finished difference Result 65 states and 85 transitions. [2022-11-19 07:49:31,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-19 07:49:31,276 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 11 states have internal predecessors, (26), 5 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) Word has length 27 [2022-11-19 07:49:31,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:49:31,277 INFO L225 Difference]: With dead ends: 65 [2022-11-19 07:49:31,277 INFO L226 Difference]: Without dead ends: 61 [2022-11-19 07:49:31,277 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=103, Invalid=598, Unknown=1, NotChecked=0, Total=702 [2022-11-19 07:49:31,280 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 51 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-19 07:49:31,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 76 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-19 07:49:31,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-11-19 07:49:31,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 37. [2022-11-19 07:49:31,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 24 states have internal predecessors, (29), 9 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-19 07:49:31,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 46 transitions. [2022-11-19 07:49:31,322 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 46 transitions. Word has length 27 [2022-11-19 07:49:31,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:49:31,322 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 46 transitions. [2022-11-19 07:49:31,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 11 states have internal predecessors, (26), 5 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-19 07:49:31,323 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 46 transitions. [2022-11-19 07:49:31,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-19 07:49:31,326 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:49:31,326 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:49:31,337 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97b9536-2ff6-4064-ba98-e3fcf29337e1/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-19 07:49:31,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97b9536-2ff6-4064-ba98-e3fcf29337e1/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:49:31,532 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:49:31,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:49:31,533 INFO L85 PathProgramCache]: Analyzing trace with hash -486030064, now seen corresponding path program 1 times [2022-11-19 07:49:31,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:49:31,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894137260] [2022-11-19 07:49:31,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:49:31,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:49:31,542 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 07:49:31,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [361352096] [2022-11-19 07:49:31,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:49:31,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:49:31,543 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97b9536-2ff6-4064-ba98-e3fcf29337e1/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:49:31,544 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97b9536-2ff6-4064-ba98-e3fcf29337e1/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:49:31,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97b9536-2ff6-4064-ba98-e3fcf29337e1/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-19 07:49:31,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:49:31,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-19 07:49:31,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:49:31,820 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 22 proven. 4 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-19 07:49:31,820 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:49:32,211 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 22 proven. 4 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-19 07:49:32,212 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:49:32,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894137260] [2022-11-19 07:49:32,212 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 07:49:32,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [361352096] [2022-11-19 07:49:32,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [361352096] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:49:32,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [606224118] [2022-11-19 07:49:32,215 INFO L159 IcfgInterpreter]: Started Sifa with 22 locations of interest [2022-11-19 07:49:32,215 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:49:32,216 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:49:32,216 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:49:32,216 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:49:35,883 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 8 for LOIs [2022-11-19 07:49:35,891 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 93 for LOIs [2022-11-19 07:49:35,921 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:49:43,654 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1228#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-19 07:49:43,655 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 07:49:43,655 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-19 07:49:43,655 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 13 [2022-11-19 07:49:43,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819017174] [2022-11-19 07:49:43,656 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-19 07:49:43,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-19 07:49:43,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:49:43,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-19 07:49:43,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=702, Unknown=1, NotChecked=0, Total=812 [2022-11-19 07:49:43,657 INFO L87 Difference]: Start difference. First operand 37 states and 46 transitions. Second operand has 13 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 10 states have internal predecessors, (28), 4 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-19 07:49:45,700 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-19 07:49:47,833 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-19 07:49:48,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:49:48,017 INFO L93 Difference]: Finished difference Result 87 states and 117 transitions. [2022-11-19 07:49:48,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 07:49:48,018 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 10 states have internal predecessors, (28), 4 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9) Word has length 47 [2022-11-19 07:49:48,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:49:48,019 INFO L225 Difference]: With dead ends: 87 [2022-11-19 07:49:48,019 INFO L226 Difference]: Without dead ends: 0 [2022-11-19 07:49:48,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 109 SyntacticMatches, 4 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 288 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=124, Invalid=805, Unknown=1, NotChecked=0, Total=930 [2022-11-19 07:49:48,021 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 25 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 22 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:49:48,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 77 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 169 Invalid, 2 Unknown, 0 Unchecked, 4.2s Time] [2022-11-19 07:49:48,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-19 07:49:48,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-19 07:49:48,022 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 07:49:48,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-19 07:49:48,022 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 47 [2022-11-19 07:49:48,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:49:48,023 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-19 07:49:48,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 10 states have internal predecessors, (28), 4 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-19 07:49:48,023 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-19 07:49:48,023 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-19 07:49:48,026 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-19 07:49:48,040 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97b9536-2ff6-4064-ba98-e3fcf29337e1/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-19 07:49:48,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97b9536-2ff6-4064-ba98-e3fcf29337e1/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:49:48,235 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-19 07:50:06,262 WARN L233 SmtUtils]: Spent 8.36s on a formula simplification. DAG size of input: 109 DAG size of output: 87 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-11-19 07:50:08,857 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-19 07:50:08,858 INFO L895 garLoopResultBuilder]: At program point L24(line 24) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (<= 0 (+ |ULTIMATE.start_main_~A~0#1| 2147483648)) (= (select |#length| 3) 12) (<= 0 (+ |ULTIMATE.start_main_~R~0#1| 2147483648)) (<= |ULTIMATE.start_main_~R~0#1| 2147483647) (= 13 (select |#length| 2)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= (select |#valid| 1) 1) (<= |ULTIMATE.start_main_~A~0#1| 2147483647) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse0 0) 48) (= (select .cse0 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2022-11-19 07:50:08,858 INFO L895 garLoopResultBuilder]: At program point L24-1(line 24) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (not (= (ite (< (+ (* |ULTIMATE.start_main_~R~0#1| |ULTIMATE.start_main_~R~0#1|) 1) (+ (* 2 |ULTIMATE.start_main_~R~0#1|) |ULTIMATE.start_main_~A~0#1|)) 1 0) 0)) (= (select |#length| 3) 12) (= 13 (select |#length| 2)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= (select |#valid| 1) 1) (<= |ULTIMATE.start_main_~A~0#1| 2147483647) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse0 0) 48) (= (select .cse0 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2022-11-19 07:50:08,858 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-19 07:50:08,858 INFO L895 garLoopResultBuilder]: At program point L33-2(lines 33 53) the Hoare annotation is: (let ((.cse1 (* 2 |ULTIMATE.start_main_~v~0#1|)) (.cse2 (* |ULTIMATE.start_main_~u~0#1| |ULTIMATE.start_main_~u~0#1|)) (.cse0 (* |ULTIMATE.start_main_~v~0#1| |ULTIMATE.start_main_~v~0#1|))) (let ((.cse3 (div (+ .cse1 .cse2 (* (- 2) |ULTIMATE.start_main_~u~0#1|) (- .cse0)) 4)) (.cse5 (select |#memory_int| 1))) (and (not (= (ite (< (+ (* |ULTIMATE.start_main_~R~0#1| |ULTIMATE.start_main_~R~0#1|) 1) (+ (* 2 |ULTIMATE.start_main_~R~0#1|) |ULTIMATE.start_main_~A~0#1|)) 1 0) 0)) (= (select |#length| 3) 12) (= (+ (* |ULTIMATE.start_main_~A~0#1| 4) (* |ULTIMATE.start_main_~r~0#1| 4) .cse0 (* 2 |ULTIMATE.start_main_~u~0#1|)) (+ .cse1 .cse2)) (= 13 (select |#length| 2)) (<= .cse3 |ULTIMATE.start_main_~A~0#1|) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (not (= (ite (= (let ((.cse4 (mod |ULTIMATE.start_main_~A~0#1| 2))) (ite (and (< |ULTIMATE.start_main_~A~0#1| 0) (not (= .cse4 0))) (+ (- 2) .cse4) .cse4)) 1) 1 0) 0)) (= (select |#valid| 1) 1) (<= |ULTIMATE.start_main_~A~0#1| 2147483647) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse5 0) 48) (not (< .cse3 |ULTIMATE.start_main_~A~0#1|)) (= (select .cse5 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0)))) [2022-11-19 07:50:08,859 INFO L895 garLoopResultBuilder]: At program point L46-1(lines 33 53) the Hoare annotation is: (let ((.cse1 (select |#memory_int| 1))) (and (not (= (ite (< (+ (* |ULTIMATE.start_main_~R~0#1| |ULTIMATE.start_main_~R~0#1|) 1) (+ (* 2 |ULTIMATE.start_main_~R~0#1|) |ULTIMATE.start_main_~A~0#1|)) 1 0) 0)) (= (select |#length| 3) 12) (= (+ (* |ULTIMATE.start_main_~A~0#1| 4) (* |ULTIMATE.start_main_~r~0#1| 4) (* |ULTIMATE.start_main_~v~0#1| |ULTIMATE.start_main_~v~0#1|) (* 2 |ULTIMATE.start_main_~u~0#1|)) (+ (* 2 |ULTIMATE.start_main_~v~0#1|) (* |ULTIMATE.start_main_~u~0#1| |ULTIMATE.start_main_~u~0#1|))) (= 13 (select |#length| 2)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (not (= (ite (= (let ((.cse0 (mod |ULTIMATE.start_main_~A~0#1| 2))) (ite (and (< |ULTIMATE.start_main_~A~0#1| 0) (not (= .cse0 0))) (+ (- 2) .cse0) .cse0)) 1) 1 0) 0)) (= (select |#valid| 1) 1) (<= |ULTIMATE.start_main_~A~0#1| 2147483647) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse1 0) 48) (= (select .cse1 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2022-11-19 07:50:08,859 INFO L895 garLoopResultBuilder]: At program point L46-2(lines 33 53) the Hoare annotation is: (let ((.cse17 (select |#memory_int| 1)) (.cse16 (* 2 |ULTIMATE.start_main_~R~0#1|))) (let ((.cse0 (not (= (ite (< (+ (* |ULTIMATE.start_main_~R~0#1| |ULTIMATE.start_main_~R~0#1|) 1) (+ .cse16 |ULTIMATE.start_main_~A~0#1|)) 1 0) 0))) (.cse1 (= (select |#length| 3) 12)) (.cse2 (= 13 (select |#length| 2))) (.cse3 (= 2 (select |#length| 1))) (.cse4 (= (select |#valid| 3) 1)) (.cse5 (not (= (ite (= (let ((.cse18 (mod |ULTIMATE.start_main_~A~0#1| 2))) (ite (and (< |ULTIMATE.start_main_~A~0#1| 0) (not (= .cse18 0))) (+ (- 2) .cse18) .cse18)) 1) 1 0) 0))) (.cse6 (= (select |#valid| 1) 1)) (.cse7 (<= |ULTIMATE.start_main_~A~0#1| 2147483647)) (.cse8 (= (select |#valid| 0) 0)) (.cse9 (= (select |#valid| 2) 1)) (.cse10 (= |#NULL.offset| 0)) (.cse11 (= (select .cse17 0) 48)) (.cse12 (= (select .cse17 1) 0)) (.cse13 (< 0 |#StackHeapBarrier|)) (.cse14 (= |#NULL.base| 0))) (or (and .cse0 .cse1 (not (< |ULTIMATE.start_main_~r~0#1| 0)) (= (+ (* |ULTIMATE.start_main_~A~0#1| 4) (* |ULTIMATE.start_main_~r~0#1| 4) (* |ULTIMATE.start_main_~v~0#1| |ULTIMATE.start_main_~v~0#1|) (* 2 |ULTIMATE.start_main_~u~0#1|)) (+ (* 2 |ULTIMATE.start_main_~v~0#1|) (* |ULTIMATE.start_main_~u~0#1| |ULTIMATE.start_main_~u~0#1|))) .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14) (and .cse0 .cse1 .cse2 (= |ULTIMATE.start_main_~v~0#1| 1) .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 (= (+ |ULTIMATE.start_main_~A~0#1| |ULTIMATE.start_main_~r~0#1|) (let ((.cse15 (div (+ (- 1) |ULTIMATE.start_main_~u~0#1|) 2))) (* .cse15 .cse15))) .cse9 .cse10 .cse11 .cse12 (= (+ .cse16 1) |ULTIMATE.start_main_~u~0#1|) .cse13 .cse14)))) [2022-11-19 07:50:08,859 INFO L895 garLoopResultBuilder]: At program point L38-2(lines 38 44) the Hoare annotation is: (let ((.cse1 (select |#memory_int| 1))) (and (not (= (ite (< (+ (* |ULTIMATE.start_main_~R~0#1| |ULTIMATE.start_main_~R~0#1|) 1) (+ (* 2 |ULTIMATE.start_main_~R~0#1|) |ULTIMATE.start_main_~A~0#1|)) 1 0) 0)) (= (select |#length| 3) 12) (= (+ (* |ULTIMATE.start_main_~A~0#1| 4) (* |ULTIMATE.start_main_~r~0#1| 4) (* |ULTIMATE.start_main_~v~0#1| |ULTIMATE.start_main_~v~0#1|) (* 2 |ULTIMATE.start_main_~u~0#1|)) (+ (* 2 |ULTIMATE.start_main_~v~0#1|) (* |ULTIMATE.start_main_~u~0#1| |ULTIMATE.start_main_~u~0#1|))) (= 13 (select |#length| 2)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (not (= (ite (= (let ((.cse0 (mod |ULTIMATE.start_main_~A~0#1| 2))) (ite (and (< |ULTIMATE.start_main_~A~0#1| 0) (not (= .cse0 0))) (+ (- 2) .cse0) .cse0)) 1) 1 0) 0)) (= (select |#valid| 1) 1) (<= |ULTIMATE.start_main_~A~0#1| 2147483647) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse1 0) 48) (= (select .cse1 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2022-11-19 07:50:08,860 INFO L895 garLoopResultBuilder]: At program point L34(line 34) the Hoare annotation is: (let ((.cse17 (select |#memory_int| 1)) (.cse16 (* 2 |ULTIMATE.start_main_~R~0#1|))) (let ((.cse0 (not (= (ite (< (+ (* |ULTIMATE.start_main_~R~0#1| |ULTIMATE.start_main_~R~0#1|) 1) (+ .cse16 |ULTIMATE.start_main_~A~0#1|)) 1 0) 0))) (.cse1 (= (select |#length| 3) 12)) (.cse2 (= 13 (select |#length| 2))) (.cse3 (= 2 (select |#length| 1))) (.cse4 (= (select |#valid| 3) 1)) (.cse5 (not (= (ite (= (let ((.cse18 (mod |ULTIMATE.start_main_~A~0#1| 2))) (ite (and (< |ULTIMATE.start_main_~A~0#1| 0) (not (= .cse18 0))) (+ (- 2) .cse18) .cse18)) 1) 1 0) 0))) (.cse6 (= (select |#valid| 1) 1)) (.cse7 (<= |ULTIMATE.start_main_~A~0#1| 2147483647)) (.cse8 (= (select |#valid| 0) 0)) (.cse9 (= (select |#valid| 2) 1)) (.cse10 (= |#NULL.offset| 0)) (.cse11 (= (select .cse17 0) 48)) (.cse12 (= (select .cse17 1) 0)) (.cse13 (< 0 |#StackHeapBarrier|)) (.cse14 (= |#NULL.base| 0))) (or (and .cse0 .cse1 (not (< |ULTIMATE.start_main_~r~0#1| 0)) (= (+ (* |ULTIMATE.start_main_~A~0#1| 4) (* |ULTIMATE.start_main_~r~0#1| 4) (* |ULTIMATE.start_main_~v~0#1| |ULTIMATE.start_main_~v~0#1|) (* 2 |ULTIMATE.start_main_~u~0#1|)) (+ (* 2 |ULTIMATE.start_main_~v~0#1|) (* |ULTIMATE.start_main_~u~0#1| |ULTIMATE.start_main_~u~0#1|))) .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14) (and .cse0 .cse1 .cse2 (= |ULTIMATE.start_main_~v~0#1| 1) .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 (= (+ |ULTIMATE.start_main_~A~0#1| |ULTIMATE.start_main_~r~0#1|) (let ((.cse15 (div (+ (- 1) |ULTIMATE.start_main_~u~0#1|) 2))) (* .cse15 .cse15))) .cse9 .cse10 .cse11 .cse12 (= (+ .cse16 1) |ULTIMATE.start_main_~u~0#1|) .cse13 .cse14)))) [2022-11-19 07:50:08,860 INFO L899 garLoopResultBuilder]: For program point L34-1(lines 33 53) no Hoare annotation was computed. [2022-11-19 07:50:08,860 INFO L899 garLoopResultBuilder]: For program point L26(line 26) no Hoare annotation was computed. [2022-11-19 07:50:08,860 INFO L902 garLoopResultBuilder]: At program point L55(line 55) the Hoare annotation is: true [2022-11-19 07:50:08,860 INFO L895 garLoopResultBuilder]: At program point L47(line 47) the Hoare annotation is: (let ((.cse1 (select |#memory_int| 1))) (and (not (= (ite (< (+ (* |ULTIMATE.start_main_~R~0#1| |ULTIMATE.start_main_~R~0#1|) 1) (+ (* 2 |ULTIMATE.start_main_~R~0#1|) |ULTIMATE.start_main_~A~0#1|)) 1 0) 0)) (= (select |#length| 3) 12) (= (+ (* |ULTIMATE.start_main_~A~0#1| 4) (* |ULTIMATE.start_main_~r~0#1| 4) (* |ULTIMATE.start_main_~v~0#1| |ULTIMATE.start_main_~v~0#1|) (* 2 |ULTIMATE.start_main_~u~0#1|)) (+ (* 2 |ULTIMATE.start_main_~v~0#1|) (* |ULTIMATE.start_main_~u~0#1| |ULTIMATE.start_main_~u~0#1|))) (= 13 (select |#length| 2)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (not (= (ite (= (let ((.cse0 (mod |ULTIMATE.start_main_~A~0#1| 2))) (ite (and (< |ULTIMATE.start_main_~A~0#1| 0) (not (= .cse0 0))) (+ (- 2) .cse0) .cse0)) 1) 1 0) 0)) (= (select |#valid| 1) 1) (<= |ULTIMATE.start_main_~A~0#1| 2147483647) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse1 0) 48) (= (select .cse1 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2022-11-19 07:50:08,860 INFO L899 garLoopResultBuilder]: For program point L47-1(lines 46 52) no Hoare annotation was computed. [2022-11-19 07:50:08,861 INFO L895 garLoopResultBuilder]: At program point L39(line 39) the Hoare annotation is: (let ((.cse1 (select |#memory_int| 1))) (and (not (= (ite (< (+ (* |ULTIMATE.start_main_~R~0#1| |ULTIMATE.start_main_~R~0#1|) 1) (+ (* 2 |ULTIMATE.start_main_~R~0#1|) |ULTIMATE.start_main_~A~0#1|)) 1 0) 0)) (= (select |#length| 3) 12) (= (+ (* |ULTIMATE.start_main_~A~0#1| 4) (* |ULTIMATE.start_main_~r~0#1| 4) (* |ULTIMATE.start_main_~v~0#1| |ULTIMATE.start_main_~v~0#1|) (* 2 |ULTIMATE.start_main_~u~0#1|)) (+ (* 2 |ULTIMATE.start_main_~v~0#1|) (* |ULTIMATE.start_main_~u~0#1| |ULTIMATE.start_main_~u~0#1|))) (= 13 (select |#length| 2)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (not (= (ite (= (let ((.cse0 (mod |ULTIMATE.start_main_~A~0#1| 2))) (ite (and (< |ULTIMATE.start_main_~A~0#1| 0) (not (= .cse0 0))) (+ (- 2) .cse0) .cse0)) 1) 1 0) 0)) (= (select |#valid| 1) 1) (<= |ULTIMATE.start_main_~A~0#1| 2147483647) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse1 0) 48) (= (select .cse1 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2022-11-19 07:50:08,861 INFO L899 garLoopResultBuilder]: For program point L39-1(lines 38 44) no Hoare annotation was computed. [2022-11-19 07:50:08,861 INFO L902 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 8 10) the Hoare annotation is: true [2022-11-19 07:50:08,861 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 8 10) no Hoare annotation was computed. [2022-11-19 07:50:08,861 INFO L902 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 11 17) the Hoare annotation is: true [2022-11-19 07:50:08,861 INFO L899 garLoopResultBuilder]: For program point L13(lines 13 14) no Hoare annotation was computed. [2022-11-19 07:50:08,861 INFO L899 garLoopResultBuilder]: For program point L12(lines 12 15) no Hoare annotation was computed. [2022-11-19 07:50:08,861 INFO L899 garLoopResultBuilder]: For program point L12-2(lines 11 17) no Hoare annotation was computed. [2022-11-19 07:50:08,862 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 11 17) no Hoare annotation was computed. [2022-11-19 07:50:08,862 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2022-11-19 07:50:08,865 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-11-19 07:50:08,867 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-19 07:50:08,888 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 07:50:08 BoogieIcfgContainer [2022-11-19 07:50:08,889 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-19 07:50:08,889 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-19 07:50:08,889 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-19 07:50:08,890 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-19 07:50:08,890 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:49:00" (3/4) ... [2022-11-19 07:50:08,893 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-19 07:50:08,899 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2022-11-19 07:50:08,899 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2022-11-19 07:50:08,903 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2022-11-19 07:50:08,903 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2022-11-19 07:50:08,904 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-19 07:50:08,904 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-19 07:50:08,941 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97b9536-2ff6-4064-ba98-e3fcf29337e1/bin/utaipan-I9t0OCRTmS/witness.graphml [2022-11-19 07:50:08,941 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-19 07:50:08,942 INFO L158 Benchmark]: Toolchain (without parser) took 69623.90ms. Allocated memory was 94.4MB in the beginning and 174.1MB in the end (delta: 79.7MB). Free memory was 59.0MB in the beginning and 83.8MB in the end (delta: -24.8MB). Peak memory consumption was 54.2MB. Max. memory is 16.1GB. [2022-11-19 07:50:08,942 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 94.4MB. Free memory is still 75.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 07:50:08,943 INFO L158 Benchmark]: CACSL2BoogieTranslator took 295.00ms. Allocated memory is still 94.4MB. Free memory was 58.7MB in the beginning and 70.5MB in the end (delta: -11.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-19 07:50:08,943 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.92ms. Allocated memory is still 94.4MB. Free memory was 70.5MB in the beginning and 68.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 07:50:08,943 INFO L158 Benchmark]: Boogie Preprocessor took 21.55ms. Allocated memory is still 94.4MB. Free memory was 68.9MB in the beginning and 67.8MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 07:50:08,944 INFO L158 Benchmark]: RCFGBuilder took 437.63ms. Allocated memory is still 94.4MB. Free memory was 67.8MB in the beginning and 55.8MB in the end (delta: 12.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-19 07:50:08,944 INFO L158 Benchmark]: TraceAbstraction took 68776.70ms. Allocated memory was 94.4MB in the beginning and 174.1MB in the end (delta: 79.7MB). Free memory was 55.2MB in the beginning and 87.0MB in the end (delta: -31.7MB). Peak memory consumption was 88.4MB. Max. memory is 16.1GB. [2022-11-19 07:50:08,945 INFO L158 Benchmark]: Witness Printer took 52.32ms. Allocated memory is still 174.1MB. Free memory was 87.0MB in the beginning and 83.8MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 07:50:08,946 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 94.4MB. Free memory is still 75.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 295.00ms. Allocated memory is still 94.4MB. Free memory was 58.7MB in the beginning and 70.5MB in the end (delta: -11.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.92ms. Allocated memory is still 94.4MB. Free memory was 70.5MB in the beginning and 68.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 21.55ms. Allocated memory is still 94.4MB. Free memory was 68.9MB in the beginning and 67.8MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 437.63ms. Allocated memory is still 94.4MB. Free memory was 67.8MB in the beginning and 55.8MB in the end (delta: 12.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 68776.70ms. Allocated memory was 94.4MB in the beginning and 174.1MB in the end (delta: 79.7MB). Free memory was 55.2MB in the beginning and 87.0MB in the end (delta: -31.7MB). Peak memory consumption was 88.4MB. Max. memory is 16.1GB. * Witness Printer took 52.32ms. Allocated memory is still 174.1MB. Free memory was 87.0MB in the beginning and 83.8MB 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: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 68.7s, OverallIterations: 5, TraceHistogramMax: 6, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 14.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 20.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 3 mSolverCounterUnknown, 172 SdHoareTripleChecker+Valid, 13.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 153 mSDsluCounter, 297 SdHoareTripleChecker+Invalid, 13.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 53 IncrementalHoareTripleChecker+Unchecked, 198 mSDsCounter, 70 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 547 IncrementalHoareTripleChecker+Invalid, 673 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 70 mSolverCounterUnsat, 99 mSDtfsCounter, 547 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 303 GetRequests, 217 SyntacticMatches, 8 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 542 ImplicationChecksByTransitivity, 25.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=48occurred in iteration=3, InterpolantAutomatonStates: 36, 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, 5 MinimizatonAttempts, 25 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 12 LocationsWithAnnotation, 38 PreInvPairs, 67 NumberOfFragments, 1355 HoareAnnotationTreeSize, 38 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 12 FomulaSimplificationsInter, 8145 FormulaSimplificationTreeSizeReductionInter, 20.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 119 NumberOfCodeBlocks, 119 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 204 ConstructedInterpolants, 0 QuantifiedInterpolants, 1170 SizeOfPredicates, 19 NumberOfNonLiveVariables, 401 ConjunctsInSsa, 61 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 132/152 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: OVERALL_TIME: 0.6s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 3, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 16, DAG_INTERPRETER_EARLY_EXITS: 1, TOOLS_POST_APPLICATIONS: 13, TOOLS_POST_TIME: 0.1s, TOOLS_POST_CALL_APPLICATIONS: 10, TOOLS_POST_CALL_TIME: 0.2s, TOOLS_POST_RETURN_APPLICATIONS: 6, TOOLS_POST_RETURN_TIME: 0.0s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 29, TOOLS_QUANTIFIERELIM_TIME: 0.3s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.1s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 44, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 10, DOMAIN_JOIN_TIME: 0.1s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 0, DOMAIN_WIDEN_TIME: 0.0s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 0, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 16, DOMAIN_ISBOTTOM_TIME: 0.0s, LOOP_SUMMARIZER_APPLICATIONS: 0, LOOP_SUMMARIZER_CACHE_MISSES: 0, LOOP_SUMMARIZER_OVERALL_TIME: 0.0s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 0, CALL_SUMMARIZER_APPLICATIONS: 6, CALL_SUMMARIZER_CACHE_MISSES: 2, CALL_SUMMARIZER_OVERALL_TIME: 0.0s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.0s, DAG_COMPRESSION_PROCESSED_NODES: 127, DAG_COMPRESSION_RETAINED_NODES: 48, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 33]: Loop Invariant Derived loop invariant: ((((((((((((((!((if R * R + 1 < 2 * R + A then 1 else 0) == 0) && unknown-#length-unknown[3] == 12) && A * 4 + r * 4 + v * v + 2 * u == 2 * v + u * u) && 13 == unknown-#length-unknown[2]) && 2 == unknown-#length-unknown[1]) && \valid[3] == 1) && !((if (if A < 0 && !(A % 2 == 0) then -2 + A % 2 else A % 2) == 1 then 1 else 0) == 0)) && \valid[1] == 1) && A <= 2147483647) && \valid[0] == 0) && \valid[2] == 1) && #NULL == 0) && unknown-#memory_int-unknown[1][0] == 48) && unknown-#memory_int-unknown[1][1] == 0) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0 - InvariantResult [Line: 33]: Loop Invariant Derived loop invariant: ((((((((((((((((!((if R * R + 1 < 2 * R + A then 1 else 0) == 0) && unknown-#length-unknown[3] == 12) && !(r < 0)) && A * 4 + r * 4 + v * v + 2 * u == 2 * v + u * u) && 13 == unknown-#length-unknown[2]) && 2 == unknown-#length-unknown[1]) && \valid[3] == 1) && !((if (if A < 0 && !(A % 2 == 0) then -2 + A % 2 else A % 2) == 1 then 1 else 0) == 0)) && \valid[1] == 1) && A <= 2147483647) && \valid[0] == 0) && \valid[2] == 1) && #NULL == 0) && unknown-#memory_int-unknown[1][0] == 48) && unknown-#memory_int-unknown[1][1] == 0) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) || (((((((((((((((((!((if R * R + 1 < 2 * R + A then 1 else 0) == 0) && unknown-#length-unknown[3] == 12) && 13 == unknown-#length-unknown[2]) && v == 1) && 2 == unknown-#length-unknown[1]) && \valid[3] == 1) && !((if (if A < 0 && !(A % 2 == 0) then -2 + A % 2 else A % 2) == 1 then 1 else 0) == 0)) && \valid[1] == 1) && A <= 2147483647) && \valid[0] == 0) && A + r == (-1 + u) / 2 * ((-1 + u) / 2)) && \valid[2] == 1) && #NULL == 0) && unknown-#memory_int-unknown[1][0] == 48) && unknown-#memory_int-unknown[1][1] == 0) && 2 * R + 1 == u) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: ((((((((((((((!((if R * R + 1 < 2 * R + A then 1 else 0) == 0) && unknown-#length-unknown[3] == 12) && A * 4 + r * 4 + v * v + 2 * u == 2 * v + u * u) && 13 == unknown-#length-unknown[2]) && 2 == unknown-#length-unknown[1]) && \valid[3] == 1) && !((if (if A < 0 && !(A % 2 == 0) then -2 + A % 2 else A % 2) == 1 then 1 else 0) == 0)) && \valid[1] == 1) && A <= 2147483647) && \valid[0] == 0) && \valid[2] == 1) && #NULL == 0) && unknown-#memory_int-unknown[1][0] == 48) && unknown-#memory_int-unknown[1][1] == 0) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0 - InvariantResult [Line: 55]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-11-19 07:50:08,986 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97b9536-2ff6-4064-ba98-e3fcf29337e1/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