./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/lcm2_valuebound1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90148568-6259-4978-920f-bd5646f1b7b9/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90148568-6259-4978-920f-bd5646f1b7b9/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90148568-6259-4978-920f-bd5646f1b7b9/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90148568-6259-4978-920f-bd5646f1b7b9/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/lcm2_valuebound1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90148568-6259-4978-920f-bd5646f1b7b9/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90148568-6259-4978-920f-bd5646f1b7b9/bin/utaipan-TEXQjIfE4P --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 75b979445b16a7d0cbf48464bf7b748fed9f6cd2ca88a888f2b108d83230a494 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 01:23:34,919 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 01:23:34,922 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 01:23:34,956 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 01:23:34,956 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 01:23:34,958 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 01:23:34,960 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 01:23:34,962 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 01:23:34,965 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 01:23:34,966 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 01:23:34,967 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 01:23:34,969 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 01:23:34,969 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 01:23:34,971 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 01:23:34,973 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 01:23:34,974 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 01:23:34,975 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 01:23:34,976 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 01:23:34,979 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 01:23:34,982 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 01:23:34,984 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 01:23:34,985 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 01:23:34,987 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 01:23:34,988 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 01:23:34,992 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 01:23:34,992 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 01:23:34,993 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 01:23:34,994 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 01:23:34,994 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 01:23:34,996 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 01:23:34,996 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 01:23:34,997 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 01:23:34,998 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 01:23:34,999 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 01:23:35,000 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 01:23:35,001 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 01:23:35,001 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 01:23:35,002 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 01:23:35,002 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 01:23:35,003 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 01:23:35,004 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 01:23:35,005 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90148568-6259-4978-920f-bd5646f1b7b9/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-21 01:23:35,030 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 01:23:35,030 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 01:23:35,031 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 01:23:35,031 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 01:23:35,032 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 01:23:35,032 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 01:23:35,033 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 01:23:35,033 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 01:23:35,033 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 01:23:35,034 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 01:23:35,034 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 01:23:35,034 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 01:23:35,035 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 01:23:35,035 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 01:23:35,036 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 01:23:35,036 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 01:23:35,036 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 01:23:35,037 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 01:23:35,037 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 01:23:35,038 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 01:23:35,038 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 01:23:35,038 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 01:23:35,038 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 01:23:35,039 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 01:23:35,039 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 01:23:35,039 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 01:23:35,039 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 01:23:35,039 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 01:23:35,040 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 01:23:35,040 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 01:23:35,040 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 01:23:35,040 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 01:23:35,041 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:23:35,041 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 01:23:35,041 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 01:23:35,041 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 01:23:35,042 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 01:23:35,042 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 01:23:35,042 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 01:23:35,042 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 01:23:35,042 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 01:23:35,043 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90148568-6259-4978-920f-bd5646f1b7b9/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90148568-6259-4978-920f-bd5646f1b7b9/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 75b979445b16a7d0cbf48464bf7b748fed9f6cd2ca88a888f2b108d83230a494 [2021-11-21 01:23:35,277 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 01:23:35,297 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 01:23:35,300 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 01:23:35,301 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 01:23:35,302 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 01:23:35,303 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90148568-6259-4978-920f-bd5646f1b7b9/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/nla-digbench-scaling/lcm2_valuebound1.c [2021-11-21 01:23:35,380 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90148568-6259-4978-920f-bd5646f1b7b9/bin/utaipan-TEXQjIfE4P/data/e7d13f014/ead5c0fec8fd4704bab066191dd37c2a/FLAGd12c08d39 [2021-11-21 01:23:35,857 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 01:23:35,858 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90148568-6259-4978-920f-bd5646f1b7b9/sv-benchmarks/c/nla-digbench-scaling/lcm2_valuebound1.c [2021-11-21 01:23:35,864 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90148568-6259-4978-920f-bd5646f1b7b9/bin/utaipan-TEXQjIfE4P/data/e7d13f014/ead5c0fec8fd4704bab066191dd37c2a/FLAGd12c08d39 [2021-11-21 01:23:36,255 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90148568-6259-4978-920f-bd5646f1b7b9/bin/utaipan-TEXQjIfE4P/data/e7d13f014/ead5c0fec8fd4704bab066191dd37c2a [2021-11-21 01:23:36,275 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 01:23:36,277 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 01:23:36,278 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 01:23:36,279 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 01:23:36,282 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 01:23:36,283 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:23:36" (1/1) ... [2021-11-21 01:23:36,285 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f6be929 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:23:36, skipping insertion in model container [2021-11-21 01:23:36,285 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:23:36" (1/1) ... [2021-11-21 01:23:36,291 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 01:23:36,304 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:23:36,488 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90148568-6259-4978-920f-bd5646f1b7b9/sv-benchmarks/c/nla-digbench-scaling/lcm2_valuebound1.c[537,550] [2021-11-21 01:23:36,505 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:23:36,514 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 01:23:36,528 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90148568-6259-4978-920f-bd5646f1b7b9/sv-benchmarks/c/nla-digbench-scaling/lcm2_valuebound1.c[537,550] [2021-11-21 01:23:36,535 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:23:36,549 INFO L208 MainTranslator]: Completed translation [2021-11-21 01:23:36,549 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:23:36 WrapperNode [2021-11-21 01:23:36,549 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 01:23:36,550 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 01:23:36,551 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 01:23:36,551 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 01:23:36,559 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:23:36" (1/1) ... [2021-11-21 01:23:36,566 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:23:36" (1/1) ... [2021-11-21 01:23:36,585 INFO L137 Inliner]: procedures = 14, calls = 22, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 52 [2021-11-21 01:23:36,586 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 01:23:36,586 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 01:23:36,586 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 01:23:36,587 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 01:23:36,594 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:23:36" (1/1) ... [2021-11-21 01:23:36,595 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:23:36" (1/1) ... [2021-11-21 01:23:36,596 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:23:36" (1/1) ... [2021-11-21 01:23:36,597 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:23:36" (1/1) ... [2021-11-21 01:23:36,600 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:23:36" (1/1) ... [2021-11-21 01:23:36,604 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:23:36" (1/1) ... [2021-11-21 01:23:36,608 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:23:36" (1/1) ... [2021-11-21 01:23:36,610 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 01:23:36,611 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 01:23:36,611 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 01:23:36,611 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 01:23:36,612 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:23:36" (1/1) ... [2021-11-21 01:23:36,627 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:23:36,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90148568-6259-4978-920f-bd5646f1b7b9/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:23:36,670 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90148568-6259-4978-920f-bd5646f1b7b9/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 01:23:36,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90148568-6259-4978-920f-bd5646f1b7b9/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 01:23:36,716 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 01:23:36,716 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-21 01:23:36,717 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-21 01:23:36,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 01:23:36,717 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 01:23:36,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 01:23:36,717 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-21 01:23:36,718 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-21 01:23:36,781 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 01:23:36,783 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 01:23:36,962 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 01:23:36,987 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 01:23:36,987 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-21 01:23:36,990 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:23:36 BoogieIcfgContainer [2021-11-21 01:23:37,000 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 01:23:37,001 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 01:23:37,002 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 01:23:37,005 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 01:23:37,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:23:36" (1/3) ... [2021-11-21 01:23:37,006 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@725906b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:23:37, skipping insertion in model container [2021-11-21 01:23:37,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:23:36" (2/3) ... [2021-11-21 01:23:37,007 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@725906b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:23:37, skipping insertion in model container [2021-11-21 01:23:37,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:23:36" (3/3) ... [2021-11-21 01:23:37,008 INFO L111 eAbstractionObserver]: Analyzing ICFG lcm2_valuebound1.c [2021-11-21 01:23:37,014 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 01:23:37,014 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-21 01:23:37,077 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 01:23:37,084 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-21 01:23:37,084 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-21 01:23:37,101 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-21 01:23:37,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-21 01:23:37,107 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:23:37,108 INFO L514 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:23:37,109 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:23:37,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:23:37,115 INFO L85 PathProgramCache]: Analyzing trace with hash 727522484, now seen corresponding path program 1 times [2021-11-21 01:23:37,128 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:23:37,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20725055] [2021-11-21 01:23:37,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:23:37,132 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:23:37,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:23:37,329 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-21 01:23:37,330 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:23:37,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20725055] [2021-11-21 01:23:37,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20725055] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:23:37,333 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:23:37,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-21 01:23:37,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809102566] [2021-11-21 01:23:37,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:23:37,342 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-21 01:23:37,342 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:23:37,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-21 01:23:37,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-21 01:23:37,388 INFO L87 Difference]: Start difference. First operand has 23 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-11-21 01:23:37,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:23:37,452 INFO L93 Difference]: Finished difference Result 35 states and 48 transitions. [2021-11-21 01:23:37,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-21 01:23:37,454 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 26 [2021-11-21 01:23:37,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:23:37,462 INFO L225 Difference]: With dead ends: 35 [2021-11-21 01:23:37,462 INFO L226 Difference]: Without dead ends: 21 [2021-11-21 01:23:37,465 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-21 01:23:37,469 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:23:37,471 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 25 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 01:23:37,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-11-21 01:23:37,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2021-11-21 01:23:37,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 10 states have (on average 1.2) internal successors, (12), 11 states have internal predecessors, (12), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-11-21 01:23:37,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 27 transitions. [2021-11-21 01:23:37,512 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 27 transitions. Word has length 26 [2021-11-21 01:23:37,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:23:37,514 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 27 transitions. [2021-11-21 01:23:37,514 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-11-21 01:23:37,515 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 27 transitions. [2021-11-21 01:23:37,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-21 01:23:37,517 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:23:37,517 INFO L514 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:23:37,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 01:23:37,517 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:23:37,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:23:37,519 INFO L85 PathProgramCache]: Analyzing trace with hash 671128121, now seen corresponding path program 1 times [2021-11-21 01:23:37,519 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:23:37,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002554134] [2021-11-21 01:23:37,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:23:37,520 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:23:37,562 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 01:23:37,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1225361262] [2021-11-21 01:23:37,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:23:37,563 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:23:37,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90148568-6259-4978-920f-bd5646f1b7b9/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:23:37,566 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90148568-6259-4978-920f-bd5646f1b7b9/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:23:37,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90148568-6259-4978-920f-bd5646f1b7b9/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-21 01:23:37,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:23:37,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-21 01:23:37,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:23:38,097 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-21 01:23:38,097 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 01:23:38,098 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:23:38,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002554134] [2021-11-21 01:23:38,098 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 01:23:38,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1225361262] [2021-11-21 01:23:38,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1225361262] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:23:38,099 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:23:38,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:23:38,100 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778459378] [2021-11-21 01:23:38,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:23:38,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:23:38,101 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:23:38,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:23:38,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:23:38,103 INFO L87 Difference]: Start difference. First operand 21 states and 27 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-11-21 01:23:38,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:23:38,218 INFO L93 Difference]: Finished difference Result 31 states and 38 transitions. [2021-11-21 01:23:38,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 01:23:38,221 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 26 [2021-11-21 01:23:38,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:23:38,222 INFO L225 Difference]: With dead ends: 31 [2021-11-21 01:23:38,222 INFO L226 Difference]: Without dead ends: 28 [2021-11-21 01:23:38,223 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-21 01:23:38,225 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 6 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:23:38,226 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 80 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:23:38,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-11-21 01:23:38,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-11-21 01:23:38,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 16 states have internal predecessors, (17), 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) [2021-11-21 01:23:38,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2021-11-21 01:23:38,237 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 26 [2021-11-21 01:23:38,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:23:38,238 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2021-11-21 01:23:38,238 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-11-21 01:23:38,238 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2021-11-21 01:23:38,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-21 01:23:38,240 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:23:38,240 INFO L514 BasicCegarLoop]: trace histogram [6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:23:38,250 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90148568-6259-4978-920f-bd5646f1b7b9/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-21 01:23:38,444 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90148568-6259-4978-920f-bd5646f1b7b9/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:23:38,445 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:23:38,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:23:38,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1013354018, now seen corresponding path program 1 times [2021-11-21 01:23:38,446 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:23:38,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694948514] [2021-11-21 01:23:38,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:23:38,447 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:23:38,491 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 01:23:38,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [236904212] [2021-11-21 01:23:38,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:23:38,492 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:23:38,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90148568-6259-4978-920f-bd5646f1b7b9/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:23:38,511 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90148568-6259-4978-920f-bd5646f1b7b9/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:23:38,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90148568-6259-4978-920f-bd5646f1b7b9/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-21 01:23:38,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:23:38,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-21 01:23:38,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:23:39,317 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-21 01:23:39,318 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:23:40,073 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-21 01:23:40,074 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:23:40,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694948514] [2021-11-21 01:23:40,074 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 01:23:40,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [236904212] [2021-11-21 01:23:40,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [236904212] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:23:40,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1626804473] [2021-11-21 01:23:40,101 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2021-11-21 01:23:40,101 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:23:40,107 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:23:40,112 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:23:40,113 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 01:23:44,730 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 61 for LOIs [2021-11-21 01:23:44,988 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 20 for LOIs [2021-11-21 01:23:45,038 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 01:23:45,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1626804473] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:23:45,823 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-21 01:23:45,823 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [8, 8] total 22 [2021-11-21 01:23:45,824 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402192333] [2021-11-21 01:23:45,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:23:45,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-21 01:23:45,825 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:23:45,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-21 01:23:45,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=360, Unknown=0, NotChecked=0, Total=462 [2021-11-21 01:23:45,827 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand has 12 states, 8 states have (on average 1.375) internal successors, (11), 6 states have internal predecessors, (11), 6 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 5 states have call predecessors, (7), 6 states have call successors, (7) [2021-11-21 01:23:46,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:23:46,262 INFO L93 Difference]: Finished difference Result 28 states and 34 transitions. [2021-11-21 01:23:46,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-21 01:23:46,263 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 8 states have (on average 1.375) internal successors, (11), 6 states have internal predecessors, (11), 6 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 5 states have call predecessors, (7), 6 states have call successors, (7) Word has length 33 [2021-11-21 01:23:46,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:23:46,263 INFO L225 Difference]: With dead ends: 28 [2021-11-21 01:23:46,264 INFO L226 Difference]: Without dead ends: 0 [2021-11-21 01:23:46,264 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 76 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=113, Invalid=439, Unknown=0, NotChecked=0, Total=552 [2021-11-21 01:23:46,266 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 16 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:23:46,266 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 22 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-21 01:23:46,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-21 01:23:46,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-21 01:23:46,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:23:46,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-21 01:23:46,268 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 33 [2021-11-21 01:23:46,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:23:46,268 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-21 01:23:46,268 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 8 states have (on average 1.375) internal successors, (11), 6 states have internal predecessors, (11), 6 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 5 states have call predecessors, (7), 6 states have call successors, (7) [2021-11-21 01:23:46,269 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-21 01:23:46,269 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-21 01:23:46,271 INFO L764 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-21 01:23:46,309 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90148568-6259-4978-920f-bd5646f1b7b9/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-21 01:23:46,490 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90148568-6259-4978-920f-bd5646f1b7b9/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:23:46,492 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-21 01:23:47,045 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-21 01:23:47,046 INFO L854 garLoopResultBuilder]: At program point L29(line 29) the Hoare annotation is: (let ((.cse1 (mod |ULTIMATE.start_main_~b~0#1| 4294967296)) (.cse0 (select |#memory_int| 2)) (.cse2 (mod |ULTIMATE.start_main_~a~0#1| 4294967296)) (.cse3 (select |#memory_int| 1))) (and (= (select .cse0 0) 108) (= 7 (select |#length| 2)) (= (select |#length| 3) 12) (= (select .cse0 3) 50) (= (select .cse0 5) 99) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= (select .cse0 1) 99) (= (select .cse0 4) 46) (<= .cse1 1) (<= 1 .cse2) (<= 1 .cse1) (= (select |#valid| 1) 1) (= (select .cse0 6) 0) (= 109 (select .cse0 2)) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse3 0) 48) (<= .cse2 1) (= (select .cse3 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2021-11-21 01:23:47,046 INFO L854 garLoopResultBuilder]: At program point L27(line 27) the Hoare annotation is: (let ((.cse1 (mod |ULTIMATE.start_main_~b~0#1| 4294967296)) (.cse0 (select |#memory_int| 2)) (.cse2 (mod |ULTIMATE.start_main_~a~0#1| 4294967296)) (.cse3 (select |#memory_int| 1))) (and (= (select .cse0 0) 108) (= 7 (select |#length| 2)) (= (select |#length| 3) 12) (= (select .cse0 3) 50) (= (select .cse0 5) 99) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= (select .cse0 1) 99) (= (select .cse0 4) 46) (<= .cse1 1) (<= 1 .cse2) (<= 1 .cse1) (= (select |#valid| 1) 1) (= (select .cse0 6) 0) (= 109 (select .cse0 2)) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse3 0) 48) (<= .cse2 1) (= (select .cse3 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2021-11-21 01:23:47,046 INFO L854 garLoopResultBuilder]: At program point L25(line 25) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 2)) (.cse1 (select |#memory_int| 1))) (and (= (select .cse0 0) 108) (= 7 (select |#length| 2)) (= (select |#length| 3) 12) (= (select .cse0 3) 50) (= (select .cse0 5) 99) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= (select .cse0 1) 99) (= (select .cse0 4) 46) (= (select |#valid| 1) 1) (= (select .cse0 6) 0) (= 109 (select .cse0 2)) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse1 0) 48) (<= (mod |ULTIMATE.start_main_~a~0#1| 4294967296) 1) (= (select .cse1 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2021-11-21 01:23:47,046 INFO L854 garLoopResultBuilder]: At program point L25-1(line 25) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 2)) (.cse1 (select |#memory_int| 1))) (and (= (select .cse0 0) 108) (= 7 (select |#length| 2)) (= (select |#length| 3) 12) (= (select .cse0 3) 50) (= (select .cse0 5) 99) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= (select .cse0 1) 99) (= (select .cse0 4) 46) (<= (mod |ULTIMATE.start_main_~b~0#1| 4294967296) 1) (= (select |#valid| 1) 1) (= (select .cse0 6) 0) (= 109 (select .cse0 2)) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse1 0) 48) (<= (mod |ULTIMATE.start_main_~a~0#1| 4294967296) 1) (= (select .cse1 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2021-11-21 01:23:47,047 INFO L854 garLoopResultBuilder]: At program point L23(line 23) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 2)) (.cse1 (select |#memory_int| 1))) (and (= (select .cse0 0) 108) (= 7 (select |#length| 2)) (= (select |#length| 3) 12) (= (select .cse0 3) 50) (= (select .cse0 5) 99) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= (select .cse0 1) 99) (= (select .cse0 4) 46) (= (select |#valid| 1) 1) (= (select .cse0 6) 0) (= 109 (select .cse0 2)) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse1 0) 48) (= (select .cse1 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2021-11-21 01:23:47,047 INFO L858 garLoopResultBuilder]: For program point L23-1(line 23) no Hoare annotation was computed. [2021-11-21 01:23:47,047 INFO L861 garLoopResultBuilder]: At program point L52(line 52) the Hoare annotation is: true [2021-11-21 01:23:47,047 INFO L854 garLoopResultBuilder]: At program point L38(line 38) the Hoare annotation is: (let ((.cse1 (mod |ULTIMATE.start_main_~b~0#1| 4294967296)) (.cse0 (select |#memory_int| 2)) (.cse2 (mod |ULTIMATE.start_main_~a~0#1| 4294967296)) (.cse3 (select |#memory_int| 1))) (and (= (select .cse0 0) 108) (= 7 (select |#length| 2)) (= (select |#length| 3) 12) (= (select .cse0 3) 50) (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~u~0#1|) (= (select .cse0 5) 99) (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) (= 2 (select |#length| 1)) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~v~0#1|) (= (select |#valid| 3) 1) (= (select .cse0 1) 99) (= (select .cse0 4) 46) (<= .cse1 1) (<= 1 .cse2) (<= 1 .cse1) (= (select |#valid| 1) 1) (= (select .cse0 6) 0) (= 109 (select .cse0 2)) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|) (= (select .cse3 0) 48) (<= .cse2 1) (= (select .cse3 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2021-11-21 01:23:47,047 INFO L858 garLoopResultBuilder]: For program point L38-1(lines 37 50) no Hoare annotation was computed. [2021-11-21 01:23:47,048 INFO L858 garLoopResultBuilder]: For program point L30(line 30) no Hoare annotation was computed. [2021-11-21 01:23:47,048 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-21 01:23:47,048 INFO L854 garLoopResultBuilder]: At program point L26(line 26) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 2)) (.cse1 (mod |ULTIMATE.start_main_~a~0#1| 4294967296)) (.cse2 (select |#memory_int| 1))) (and (= (select .cse0 0) 108) (= 7 (select |#length| 2)) (= (select |#length| 3) 12) (= (select .cse0 3) 50) (= (select .cse0 5) 99) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= (select .cse0 1) 99) (= (select .cse0 4) 46) (<= (mod |ULTIMATE.start_main_~b~0#1| 4294967296) 1) (<= 1 .cse1) (= (select |#valid| 1) 1) (= (select .cse0 6) 0) (= 109 (select .cse0 2)) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse2 0) 48) (<= .cse1 1) (= (select .cse2 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2021-11-21 01:23:47,048 INFO L854 garLoopResultBuilder]: At program point L43-2(lines 37 50) the Hoare annotation is: (let ((.cse1 (mod |ULTIMATE.start_main_~b~0#1| 4294967296)) (.cse0 (select |#memory_int| 2)) (.cse2 (mod |ULTIMATE.start_main_~a~0#1| 4294967296)) (.cse3 (select |#memory_int| 1))) (and (= (select .cse0 0) 108) (= 7 (select |#length| 2)) (= (select |#length| 3) 12) (= (select .cse0 3) 50) (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~u~0#1|) (= (select .cse0 5) 99) (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) (= 2 (select |#length| 1)) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~v~0#1|) (= (select |#valid| 3) 1) (= (select .cse0 1) 99) (= (select .cse0 4) 46) (<= .cse1 1) (<= 1 .cse2) (<= 1 .cse1) (= (select |#valid| 1) 1) (= (select .cse0 6) 0) (= 109 (select .cse0 2)) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|) (= (select .cse3 0) 48) (<= .cse2 1) (= (select .cse3 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2021-11-21 01:23:47,049 INFO L854 garLoopResultBuilder]: At program point L37-2(lines 37 50) the Hoare annotation is: (and (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~u~0#1|) (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~v~0#1|) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|)) [2021-11-21 01:23:47,049 INFO L861 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 8 10) the Hoare annotation is: true [2021-11-21 01:23:47,049 INFO L858 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 8 10) no Hoare annotation was computed. [2021-11-21 01:23:47,049 INFO L861 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 11 17) the Hoare annotation is: true [2021-11-21 01:23:47,049 INFO L858 garLoopResultBuilder]: For program point L13(lines 13 14) no Hoare annotation was computed. [2021-11-21 01:23:47,049 INFO L858 garLoopResultBuilder]: For program point L12(lines 12 15) no Hoare annotation was computed. [2021-11-21 01:23:47,050 INFO L858 garLoopResultBuilder]: For program point L12-2(lines 11 17) no Hoare annotation was computed. [2021-11-21 01:23:47,050 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 11 17) no Hoare annotation was computed. [2021-11-21 01:23:47,050 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-11-21 01:23:47,053 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-11-21 01:23:47,054 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-21 01:23:47,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 01:23:47 BoogieIcfgContainer [2021-11-21 01:23:47,097 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-21 01:23:47,098 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-21 01:23:47,098 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-21 01:23:47,098 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-21 01:23:47,098 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:23:36" (3/4) ... [2021-11-21 01:23:47,101 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-21 01:23:47,106 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2021-11-21 01:23:47,107 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2021-11-21 01:23:47,127 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2021-11-21 01:23:47,127 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-11-21 01:23:47,128 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-11-21 01:23:47,128 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-21 01:23:47,128 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-21 01:23:47,233 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90148568-6259-4978-920f-bd5646f1b7b9/bin/utaipan-TEXQjIfE4P/witness.graphml [2021-11-21 01:23:47,233 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-21 01:23:47,234 INFO L158 Benchmark]: Toolchain (without parser) took 10956.83ms. Allocated memory was 117.4MB in the beginning and 172.0MB in the end (delta: 54.5MB). Free memory was 80.2MB in the beginning and 117.0MB in the end (delta: -36.9MB). Peak memory consumption was 17.1MB. Max. memory is 16.1GB. [2021-11-21 01:23:47,234 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 117.4MB. Free memory is still 97.3MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 01:23:47,235 INFO L158 Benchmark]: CACSL2BoogieTranslator took 271.31ms. Allocated memory is still 117.4MB. Free memory was 80.0MB in the beginning and 93.4MB in the end (delta: -13.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-21 01:23:47,235 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.29ms. Allocated memory is still 117.4MB. Free memory was 93.4MB in the beginning and 91.9MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 01:23:47,235 INFO L158 Benchmark]: Boogie Preprocessor took 23.68ms. Allocated memory is still 117.4MB. Free memory was 91.9MB in the beginning and 90.8MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-21 01:23:47,236 INFO L158 Benchmark]: RCFGBuilder took 389.02ms. Allocated memory is still 117.4MB. Free memory was 90.8MB in the beginning and 79.8MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-21 01:23:47,236 INFO L158 Benchmark]: TraceAbstraction took 10095.90ms. Allocated memory was 117.4MB in the beginning and 172.0MB in the end (delta: 54.5MB). Free memory was 79.4MB in the beginning and 120.2MB in the end (delta: -40.8MB). Peak memory consumption was 85.8MB. Max. memory is 16.1GB. [2021-11-21 01:23:47,237 INFO L158 Benchmark]: Witness Printer took 135.39ms. Allocated memory is still 172.0MB. Free memory was 119.1MB in the beginning and 117.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-21 01:23:47,239 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 117.4MB. Free memory is still 97.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 271.31ms. Allocated memory is still 117.4MB. Free memory was 80.0MB in the beginning and 93.4MB in the end (delta: -13.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.29ms. Allocated memory is still 117.4MB. Free memory was 93.4MB in the beginning and 91.9MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 23.68ms. Allocated memory is still 117.4MB. Free memory was 91.9MB in the beginning and 90.8MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 389.02ms. Allocated memory is still 117.4MB. Free memory was 90.8MB in the beginning and 79.8MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 10095.90ms. Allocated memory was 117.4MB in the beginning and 172.0MB in the end (delta: 54.5MB). Free memory was 79.4MB in the beginning and 120.2MB in the end (delta: -40.8MB). Peak memory consumption was 85.8MB. Max. memory is 16.1GB. * Witness Printer took 135.39ms. Allocated memory is still 172.0MB. Free memory was 119.1MB in the beginning and 117.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - 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, 23 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 10.0s, OverallIterations: 3, TraceHistogramMax: 6, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.6s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 27 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 22 mSDsluCounter, 127 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 76 mSDsCounter, 25 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 145 IncrementalHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 25 mSolverCounterUnsat, 56 mSDtfsCounter, 145 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 127 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=2, InterpolantAutomatonStates: 19, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 12 LocationsWithAnnotation, 22 PreInvPairs, 26 NumberOfFragments, 1014 HoareAnnotationTreeSize, 22 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 12 FomulaSimplificationsInter, 489 FormulaSimplificationTreeSizeReductionInter, 0.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 85 NumberOfCodeBlocks, 85 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 114 ConstructedInterpolants, 0 QuantifiedInterpolants, 392 SizeOfPredicates, 14 NumberOfNonLiveVariables, 226 ConjunctsInSsa, 50 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 112/128 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: 4.9s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 3, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 25, DAG_INTERPRETER_EARLY_EXITS: 1, TOOLS_POST_APPLICATIONS: 16, TOOLS_POST_TIME: 0.7s, TOOLS_POST_CALL_APPLICATIONS: 23, TOOLS_POST_CALL_TIME: 2.2s, TOOLS_POST_RETURN_APPLICATIONS: 16, TOOLS_POST_RETURN_TIME: 1.6s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 54, TOOLS_QUANTIFIERELIM_TIME: 4.6s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.2s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 68, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 29, DOMAIN_JOIN_TIME: 0.2s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 0, DOMAIN_WIDEN_TIME: 0.0s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 1, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 25, DOMAIN_ISBOTTOM_TIME: 0.0s, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME: 0.6s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 0.6s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 1, CALL_SUMMARIZER_APPLICATIONS: 16, 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: 294, DAG_COMPRESSION_RETAINED_NODES: 71, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: (((((((((((((((((((((((((unknown-#memory_int-unknown[2][0] == 108 && 7 == unknown-#length-unknown[2]) && unknown-#length-unknown[3] == 12) && unknown-#memory_int-unknown[2][3] == 50) && b == u) && unknown-#memory_int-unknown[2][5] == 99) && b == y) && 2 == unknown-#length-unknown[1]) && a == v) && \valid[3] == 1) && unknown-#memory_int-unknown[2][1] == 99) && unknown-#memory_int-unknown[2][4] == 46) && b % 4294967296 <= 1) && 1 <= a % 4294967296) && 1 <= b % 4294967296) && \valid[1] == 1) && unknown-#memory_int-unknown[2][6] == 0) && 109 == unknown-#memory_int-unknown[2][2]) && \valid[0] == 0) && \valid[2] == 1) && #NULL == 0) && a == x) && unknown-#memory_int-unknown[1][0] == 48) && a % 4294967296 <= 1) && unknown-#memory_int-unknown[1][1] == 0) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0 - InvariantResult [Line: 52]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-11-21 01:23:47,283 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90148568-6259-4978-920f-bd5646f1b7b9/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE