./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops/lu.cmp.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_6ef52bf5-0dcb-4b67-b8cb-42c0a06da633/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef52bf5-0dcb-4b67-b8cb-42c0a06da633/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_6ef52bf5-0dcb-4b67-b8cb-42c0a06da633/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef52bf5-0dcb-4b67-b8cb-42c0a06da633/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/loops/lu.cmp.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef52bf5-0dcb-4b67-b8cb-42c0a06da633/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_6ef52bf5-0dcb-4b67-b8cb-42c0a06da633/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 9f7b9e2e2452a973cdb1a73a9c368f26d19387c763b2be4ad10c01e7a31f6598 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 02:00:18,112 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 02:00:18,114 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 02:00:18,163 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 02:00:18,164 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 02:00:18,170 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 02:00:18,172 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 02:00:18,176 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 02:00:18,178 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 02:00:18,186 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 02:00:18,188 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 02:00:18,190 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 02:00:18,190 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 02:00:18,193 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 02:00:18,195 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 02:00:18,203 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 02:00:18,205 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 02:00:18,207 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 02:00:18,209 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 02:00:18,215 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 02:00:18,217 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 02:00:18,218 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 02:00:18,220 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 02:00:18,221 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 02:00:18,224 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 02:00:18,224 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 02:00:18,225 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 02:00:18,226 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 02:00:18,226 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 02:00:18,228 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 02:00:18,228 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 02:00:18,229 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 02:00:18,230 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 02:00:18,231 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 02:00:18,232 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 02:00:18,232 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 02:00:18,233 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 02:00:18,233 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 02:00:18,234 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 02:00:18,235 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 02:00:18,235 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 02:00:18,236 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef52bf5-0dcb-4b67-b8cb-42c0a06da633/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-21 02:00:18,262 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 02:00:18,262 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 02:00:18,263 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 02:00:18,263 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 02:00:18,264 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 02:00:18,264 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 02:00:18,264 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 02:00:18,264 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 02:00:18,265 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 02:00:18,265 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 02:00:18,265 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 02:00:18,265 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 02:00:18,266 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 02:00:18,266 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 02:00:18,266 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 02:00:18,266 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 02:00:18,267 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 02:00:18,267 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 02:00:18,267 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 02:00:18,268 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 02:00:18,268 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 02:00:18,268 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 02:00:18,268 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 02:00:18,269 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 02:00:18,269 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 02:00:18,269 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 02:00:18,269 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 02:00:18,269 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 02:00:18,270 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 02:00:18,270 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 02:00:18,270 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 02:00:18,270 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 02:00:18,271 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 02:00:18,271 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 02:00:18,271 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 02:00:18,271 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 02:00:18,272 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 02:00:18,272 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 02:00:18,272 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 02:00:18,272 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 02:00:18,272 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 02:00:18,273 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_6ef52bf5-0dcb-4b67-b8cb-42c0a06da633/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef52bf5-0dcb-4b67-b8cb-42c0a06da633/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9f7b9e2e2452a973cdb1a73a9c368f26d19387c763b2be4ad10c01e7a31f6598 [2021-11-21 02:00:18,523 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 02:00:18,562 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 02:00:18,565 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 02:00:18,566 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 02:00:18,568 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 02:00:18,569 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef52bf5-0dcb-4b67-b8cb-42c0a06da633/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/loops/lu.cmp.c [2021-11-21 02:00:18,653 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef52bf5-0dcb-4b67-b8cb-42c0a06da633/bin/utaipan-TEXQjIfE4P/data/14c7b9809/5730ce9b19284e3fad7eb220e157c14d/FLAG25a52c14a [2021-11-21 02:00:19,081 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 02:00:19,081 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef52bf5-0dcb-4b67-b8cb-42c0a06da633/sv-benchmarks/c/loops/lu.cmp.c [2021-11-21 02:00:19,088 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef52bf5-0dcb-4b67-b8cb-42c0a06da633/bin/utaipan-TEXQjIfE4P/data/14c7b9809/5730ce9b19284e3fad7eb220e157c14d/FLAG25a52c14a [2021-11-21 02:00:19,473 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef52bf5-0dcb-4b67-b8cb-42c0a06da633/bin/utaipan-TEXQjIfE4P/data/14c7b9809/5730ce9b19284e3fad7eb220e157c14d [2021-11-21 02:00:19,476 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 02:00:19,477 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 02:00:19,492 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 02:00:19,492 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 02:00:19,496 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 02:00:19,497 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 02:00:19" (1/1) ... [2021-11-21 02:00:19,500 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17578f7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:00:19, skipping insertion in model container [2021-11-21 02:00:19,501 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 02:00:19" (1/1) ... [2021-11-21 02:00:19,507 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 02:00:19,527 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 02:00:19,683 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_6ef52bf5-0dcb-4b67-b8cb-42c0a06da633/sv-benchmarks/c/loops/lu.cmp.c[318,331] [2021-11-21 02:00:19,727 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 02:00:19,736 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 02:00:19,748 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_6ef52bf5-0dcb-4b67-b8cb-42c0a06da633/sv-benchmarks/c/loops/lu.cmp.c[318,331] [2021-11-21 02:00:19,771 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 02:00:19,785 INFO L208 MainTranslator]: Completed translation [2021-11-21 02:00:19,786 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:00:19 WrapperNode [2021-11-21 02:00:19,786 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 02:00:19,787 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 02:00:19,787 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 02:00:19,787 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 02:00:19,794 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:00:19" (1/1) ... [2021-11-21 02:00:19,803 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:00:19" (1/1) ... [2021-11-21 02:00:19,836 INFO L137 Inliner]: procedures = 17, calls = 47, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 224 [2021-11-21 02:00:19,836 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 02:00:19,837 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 02:00:19,837 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 02:00:19,838 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 02:00:19,846 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:00:19" (1/1) ... [2021-11-21 02:00:19,846 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:00:19" (1/1) ... [2021-11-21 02:00:19,853 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:00:19" (1/1) ... [2021-11-21 02:00:19,857 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:00:19" (1/1) ... [2021-11-21 02:00:19,871 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:00:19" (1/1) ... [2021-11-21 02:00:19,878 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:00:19" (1/1) ... [2021-11-21 02:00:19,880 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:00:19" (1/1) ... [2021-11-21 02:00:19,884 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 02:00:19,885 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 02:00:19,885 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 02:00:19,886 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 02:00:19,887 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:00:19" (1/1) ... [2021-11-21 02:00:19,914 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 02:00:19,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef52bf5-0dcb-4b67-b8cb-42c0a06da633/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 02:00:19,944 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef52bf5-0dcb-4b67-b8cb-42c0a06da633/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 02:00:19,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef52bf5-0dcb-4b67-b8cb-42c0a06da633/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 02:00:19,993 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 02:00:19,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 02:00:19,993 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 02:00:19,993 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-11-21 02:00:19,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-11-21 02:00:19,994 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 02:00:19,994 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 02:00:19,994 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 02:00:20,112 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 02:00:20,114 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 02:00:20,415 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 02:00:20,510 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 02:00:20,510 INFO L301 CfgBuilder]: Removed 11 assume(true) statements. [2021-11-21 02:00:20,513 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 02:00:20 BoogieIcfgContainer [2021-11-21 02:00:20,513 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 02:00:20,515 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 02:00:20,515 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 02:00:20,519 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 02:00:20,519 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 02:00:19" (1/3) ... [2021-11-21 02:00:20,520 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71ebf0d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 02:00:20, skipping insertion in model container [2021-11-21 02:00:20,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:00:19" (2/3) ... [2021-11-21 02:00:20,521 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71ebf0d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 02:00:20, skipping insertion in model container [2021-11-21 02:00:20,521 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 02:00:20" (3/3) ... [2021-11-21 02:00:20,522 INFO L111 eAbstractionObserver]: Analyzing ICFG lu.cmp.c [2021-11-21 02:00:20,528 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 02:00:20,528 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-21 02:00:20,599 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 02:00:20,613 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 02:00:20,614 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-21 02:00:20,655 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 20 states have (on average 1.8) internal successors, (36), 21 states have internal predecessors, (36), 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 02:00:20,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-21 02:00:20,661 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 02:00:20,661 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-21 02:00:20,662 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 02:00:20,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 02:00:20,670 INFO L85 PathProgramCache]: Analyzing trace with hash 219396429, now seen corresponding path program 1 times [2021-11-21 02:00:20,695 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 02:00:20,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506220781] [2021-11-21 02:00:20,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 02:00:20,697 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 02:00:20,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 02:00:20,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 02:00:20,876 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 02:00:20,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506220781] [2021-11-21 02:00:20,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506220781] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 02:00:20,877 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 02:00:20,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 02:00:20,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618791815] [2021-11-21 02:00:20,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 02:00:20,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 02:00:20,885 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 02:00:20,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 02:00:20,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 02:00:20,916 INFO L87 Difference]: Start difference. First operand has 22 states, 20 states have (on average 1.8) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 02:00:20,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 02:00:20,991 INFO L93 Difference]: Finished difference Result 44 states and 73 transitions. [2021-11-21 02:00:20,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 02:00:20,993 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-21 02:00:20,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 02:00:21,001 INFO L225 Difference]: With dead ends: 44 [2021-11-21 02:00:21,001 INFO L226 Difference]: Without dead ends: 8 [2021-11-21 02:00:21,005 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 02:00:21,008 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 34 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 02:00:21,010 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 26 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 02:00:21,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2021-11-21 02:00:21,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2021-11-21 02:00:21,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 02:00:21,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 9 transitions. [2021-11-21 02:00:21,049 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 9 transitions. Word has length 5 [2021-11-21 02:00:21,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 02:00:21,050 INFO L470 AbstractCegarLoop]: Abstraction has 8 states and 9 transitions. [2021-11-21 02:00:21,050 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 02:00:21,052 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 9 transitions. [2021-11-21 02:00:21,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-21 02:00:21,053 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 02:00:21,053 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-21 02:00:21,053 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 02:00:21,054 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 02:00:21,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 02:00:21,057 INFO L85 PathProgramCache]: Analyzing trace with hash -1788574205, now seen corresponding path program 1 times [2021-11-21 02:00:21,057 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 02:00:21,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943027065] [2021-11-21 02:00:21,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 02:00:21,059 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 02:00:21,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 02:00:21,162 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-21 02:00:21,163 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 02:00:21,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943027065] [2021-11-21 02:00:21,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943027065] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 02:00:21,163 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 02:00:21,164 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 02:00:21,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222281542] [2021-11-21 02:00:21,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 02:00:21,165 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 02:00:21,165 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 02:00:21,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 02:00:21,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 02:00:21,166 INFO L87 Difference]: Start difference. First operand 8 states and 9 transitions. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 02:00:21,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 02:00:21,197 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2021-11-21 02:00:21,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 02:00:21,198 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-21 02:00:21,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 02:00:21,198 INFO L225 Difference]: With dead ends: 15 [2021-11-21 02:00:21,199 INFO L226 Difference]: Without dead ends: 13 [2021-11-21 02:00:21,199 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 02:00:21,201 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 6 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 02:00:21,202 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 7 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 02:00:21,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-11-21 02:00:21,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2021-11-21 02:00:21,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 02:00:21,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2021-11-21 02:00:21,210 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 6 [2021-11-21 02:00:21,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 02:00:21,211 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2021-11-21 02:00:21,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 02:00:21,212 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2021-11-21 02:00:21,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-21 02:00:21,213 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 02:00:21,213 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2021-11-21 02:00:21,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-21 02:00:21,214 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 02:00:21,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 02:00:21,216 INFO L85 PathProgramCache]: Analyzing trace with hash 253668577, now seen corresponding path program 1 times [2021-11-21 02:00:21,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 02:00:21,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243355955] [2021-11-21 02:00:21,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 02:00:21,218 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 02:00:21,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 02:00:21,337 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-21 02:00:21,338 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 02:00:21,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243355955] [2021-11-21 02:00:21,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243355955] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 02:00:21,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1297182561] [2021-11-21 02:00:21,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 02:00:21,344 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 02:00:21,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef52bf5-0dcb-4b67-b8cb-42c0a06da633/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 02:00:21,351 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef52bf5-0dcb-4b67-b8cb-42c0a06da633/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 02:00:21,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef52bf5-0dcb-4b67-b8cb-42c0a06da633/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-21 02:00:21,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 02:00:21,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-21 02:00:21,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 02:00:21,607 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-21 02:00:21,608 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 02:00:21,678 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-21 02:00:21,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1297182561] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 02:00:21,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [638792071] [2021-11-21 02:00:21,710 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2021-11-21 02:00:21,710 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 02:00:21,714 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 02:00:21,720 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 02:00:21,720 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 02:00:21,817 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 19 [2021-11-21 02:00:22,323 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 35 [2021-11-21 02:00:22,370 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 21 [2021-11-21 02:00:22,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:22,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:22,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:22,871 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 416 treesize of output 424 [2021-11-21 02:00:22,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:22,914 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 424 treesize of output 391 [2021-11-21 02:00:22,965 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef52bf5-0dcb-4b67-b8cb-42c0a06da633/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-21 02:00:23,142 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef52bf5-0dcb-4b67-b8cb-42c0a06da633/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 02:00:23,143 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: Should have been eliminated by DER at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.DerPreprocessor.(DerPreprocessor.java:108) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:340) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:140) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne(DualJunctionSaa.java:115) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryExhaustivelyToEliminate(DualJunctionSaa.java:93) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToEliminateOne(QuantifierPusher.java:903) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyNewEliminationTechniquesExhaustively(QuantifierPusher.java:865) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyDualJunctionEliminationTechniques(QuantifierPusher.java:783) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective2(QuantifierPusher.java:425) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:355) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:162) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:169) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:243) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:233) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:92) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.newQuantifier(SymbolicTools.java:278) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.projectExistentially(SymbolicTools.java:264) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermDomainOperationProvider.projectExistentially(TermDomainOperationProvider.java:1) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateTransformer.strongestPostcondition(PredicateTransformer.java:131) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:116) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpretForSingleMarker(DagInterpreter.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarizeInternal(FixpointLoopSummarizer.java:125) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarize(FixpointLoopSummarizer.java:98) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretLoop(DagInterpreter.java:177) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:168) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-21 02:00:23,146 INFO L158 Benchmark]: Toolchain (without parser) took 3668.27ms. Allocated memory was 86.0MB in the beginning and 104.9MB in the end (delta: 18.9MB). Free memory was 47.2MB in the beginning and 36.1MB in the end (delta: 11.2MB). Peak memory consumption was 30.0MB. Max. memory is 16.1GB. [2021-11-21 02:00:23,146 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 86.0MB. Free memory is still 63.9MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 02:00:23,147 INFO L158 Benchmark]: CACSL2BoogieTranslator took 294.21ms. Allocated memory is still 86.0MB. Free memory was 47.1MB in the beginning and 60.3MB in the end (delta: -13.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-21 02:00:23,147 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.55ms. Allocated memory is still 86.0MB. Free memory was 60.3MB in the beginning and 57.8MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-21 02:00:23,148 INFO L158 Benchmark]: Boogie Preprocessor took 47.22ms. Allocated memory is still 86.0MB. Free memory was 57.8MB in the beginning and 56.0MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 02:00:23,149 INFO L158 Benchmark]: RCFGBuilder took 628.02ms. Allocated memory is still 86.0MB. Free memory was 56.0MB in the beginning and 36.8MB in the end (delta: 19.2MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2021-11-21 02:00:23,149 INFO L158 Benchmark]: TraceAbstraction took 2630.01ms. Allocated memory was 86.0MB in the beginning and 104.9MB in the end (delta: 18.9MB). Free memory was 36.5MB in the beginning and 36.1MB in the end (delta: 392.1kB). Peak memory consumption was 19.9MB. Max. memory is 16.1GB. [2021-11-21 02:00:23,152 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 86.0MB. Free memory is still 63.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 294.21ms. Allocated memory is still 86.0MB. Free memory was 47.1MB in the beginning and 60.3MB in the end (delta: -13.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.55ms. Allocated memory is still 86.0MB. Free memory was 60.3MB in the beginning and 57.8MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 47.22ms. Allocated memory is still 86.0MB. Free memory was 57.8MB in the beginning and 56.0MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 628.02ms. Allocated memory is still 86.0MB. Free memory was 56.0MB in the beginning and 36.8MB in the end (delta: 19.2MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 2630.01ms. Allocated memory was 86.0MB in the beginning and 104.9MB in the end (delta: 18.9MB). Free memory was 36.5MB in the beginning and 36.1MB in the end (delta: 392.1kB). Peak memory consumption was 19.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: Should have been eliminated by DER de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: Should have been eliminated by DER: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.DerPreprocessor.(DerPreprocessor.java:108) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-21 02:00:23,192 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef52bf5-0dcb-4b67-b8cb-42c0a06da633/bin/utaipan-TEXQjIfE4P/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 Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef52bf5-0dcb-4b67-b8cb-42c0a06da633/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef52bf5-0dcb-4b67-b8cb-42c0a06da633/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_6ef52bf5-0dcb-4b67-b8cb-42c0a06da633/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef52bf5-0dcb-4b67-b8cb-42c0a06da633/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/loops/lu.cmp.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef52bf5-0dcb-4b67-b8cb-42c0a06da633/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef52bf5-0dcb-4b67-b8cb-42c0a06da633/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 9f7b9e2e2452a973cdb1a73a9c368f26d19387c763b2be4ad10c01e7a31f6598 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 02:00:25,473 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 02:00:25,477 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 02:00:25,527 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 02:00:25,528 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 02:00:25,533 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 02:00:25,535 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 02:00:25,539 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 02:00:25,543 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 02:00:25,551 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 02:00:25,552 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 02:00:25,554 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 02:00:25,554 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 02:00:25,557 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 02:00:25,559 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 02:00:25,563 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 02:00:25,565 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 02:00:25,566 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 02:00:25,568 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 02:00:25,575 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 02:00:25,577 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 02:00:25,579 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 02:00:25,581 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 02:00:25,582 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 02:00:25,585 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 02:00:25,585 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 02:00:25,586 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 02:00:25,587 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 02:00:25,587 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 02:00:25,588 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 02:00:25,588 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 02:00:25,589 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 02:00:25,589 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 02:00:25,590 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 02:00:25,591 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 02:00:25,591 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 02:00:25,592 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 02:00:25,592 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 02:00:25,593 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 02:00:25,594 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 02:00:25,594 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 02:00:25,595 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef52bf5-0dcb-4b67-b8cb-42c0a06da633/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-21 02:00:25,632 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 02:00:25,632 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 02:00:25,633 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 02:00:25,633 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 02:00:25,633 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 02:00:25,634 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 02:00:25,634 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 02:00:25,634 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 02:00:25,634 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 02:00:25,635 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 02:00:25,635 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 02:00:25,635 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 02:00:25,636 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 02:00:25,636 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 02:00:25,636 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 02:00:25,637 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 02:00:25,637 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 02:00:25,637 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 02:00:25,637 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 02:00:25,637 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-21 02:00:25,638 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-21 02:00:25,638 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 02:00:25,638 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 02:00:25,638 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 02:00:25,639 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 02:00:25,639 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 02:00:25,639 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-21 02:00:25,639 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 02:00:25,640 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 02:00:25,640 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 02:00:25,640 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 02:00:25,640 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 02:00:25,641 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-21 02:00:25,641 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-21 02:00:25,641 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 02:00:25,641 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 02:00:25,641 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 02:00:25,642 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_6ef52bf5-0dcb-4b67-b8cb-42c0a06da633/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef52bf5-0dcb-4b67-b8cb-42c0a06da633/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9f7b9e2e2452a973cdb1a73a9c368f26d19387c763b2be4ad10c01e7a31f6598 [2021-11-21 02:00:26,005 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 02:00:26,025 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 02:00:26,028 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 02:00:26,029 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 02:00:26,030 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 02:00:26,031 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef52bf5-0dcb-4b67-b8cb-42c0a06da633/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/loops/lu.cmp.c [2021-11-21 02:00:26,114 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef52bf5-0dcb-4b67-b8cb-42c0a06da633/bin/utaipan-TEXQjIfE4P/data/901834058/e1855e3d51304599a6e28e949f0522c7/FLAG35773b356 [2021-11-21 02:00:26,650 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 02:00:26,655 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef52bf5-0dcb-4b67-b8cb-42c0a06da633/sv-benchmarks/c/loops/lu.cmp.c [2021-11-21 02:00:26,664 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef52bf5-0dcb-4b67-b8cb-42c0a06da633/bin/utaipan-TEXQjIfE4P/data/901834058/e1855e3d51304599a6e28e949f0522c7/FLAG35773b356 [2021-11-21 02:00:26,971 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef52bf5-0dcb-4b67-b8cb-42c0a06da633/bin/utaipan-TEXQjIfE4P/data/901834058/e1855e3d51304599a6e28e949f0522c7 [2021-11-21 02:00:26,974 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 02:00:26,975 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 02:00:26,976 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 02:00:26,976 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 02:00:26,992 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 02:00:26,993 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 02:00:26" (1/1) ... [2021-11-21 02:00:26,994 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a7e065b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:00:26, skipping insertion in model container [2021-11-21 02:00:26,994 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 02:00:26" (1/1) ... [2021-11-21 02:00:26,999 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 02:00:27,026 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 02:00:27,167 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_6ef52bf5-0dcb-4b67-b8cb-42c0a06da633/sv-benchmarks/c/loops/lu.cmp.c[318,331] [2021-11-21 02:00:27,258 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 02:00:27,271 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 02:00:27,280 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_6ef52bf5-0dcb-4b67-b8cb-42c0a06da633/sv-benchmarks/c/loops/lu.cmp.c[318,331] [2021-11-21 02:00:27,306 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 02:00:27,325 INFO L208 MainTranslator]: Completed translation [2021-11-21 02:00:27,325 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:00:27 WrapperNode [2021-11-21 02:00:27,325 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 02:00:27,326 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 02:00:27,327 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 02:00:27,327 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 02:00:27,335 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:00:27" (1/1) ... [2021-11-21 02:00:27,350 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:00:27" (1/1) ... [2021-11-21 02:00:27,380 INFO L137 Inliner]: procedures = 18, calls = 47, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 224 [2021-11-21 02:00:27,380 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 02:00:27,381 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 02:00:27,381 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 02:00:27,381 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 02:00:27,390 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:00:27" (1/1) ... [2021-11-21 02:00:27,390 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:00:27" (1/1) ... [2021-11-21 02:00:27,397 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:00:27" (1/1) ... [2021-11-21 02:00:27,397 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:00:27" (1/1) ... [2021-11-21 02:00:27,411 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:00:27" (1/1) ... [2021-11-21 02:00:27,420 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:00:27" (1/1) ... [2021-11-21 02:00:27,422 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:00:27" (1/1) ... [2021-11-21 02:00:27,427 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 02:00:27,428 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 02:00:27,428 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 02:00:27,428 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 02:00:27,429 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:00:27" (1/1) ... [2021-11-21 02:00:27,451 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 02:00:27,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef52bf5-0dcb-4b67-b8cb-42c0a06da633/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 02:00:27,479 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef52bf5-0dcb-4b67-b8cb-42c0a06da633/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 02:00:27,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef52bf5-0dcb-4b67-b8cb-42c0a06da633/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 02:00:27,530 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 02:00:27,530 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2021-11-21 02:00:27,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2021-11-21 02:00:27,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-21 02:00:27,531 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 02:00:27,531 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 02:00:27,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 02:00:27,531 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 02:00:27,674 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 02:00:27,691 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 02:00:43,616 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 02:00:43,628 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 02:00:43,629 INFO L301 CfgBuilder]: Removed 11 assume(true) statements. [2021-11-21 02:00:43,631 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 02:00:43 BoogieIcfgContainer [2021-11-21 02:00:43,631 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 02:00:43,633 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 02:00:43,633 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 02:00:43,636 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 02:00:43,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 02:00:26" (1/3) ... [2021-11-21 02:00:43,638 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16464e0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 02:00:43, skipping insertion in model container [2021-11-21 02:00:43,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:00:27" (2/3) ... [2021-11-21 02:00:43,639 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16464e0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 02:00:43, skipping insertion in model container [2021-11-21 02:00:43,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 02:00:43" (3/3) ... [2021-11-21 02:00:43,645 INFO L111 eAbstractionObserver]: Analyzing ICFG lu.cmp.c [2021-11-21 02:00:43,657 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 02:00:43,658 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-21 02:00:43,731 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 02:00:43,739 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 02:00:43,739 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-21 02:00:43,754 INFO L276 IsEmpty]: Start isEmpty. Operand has 50 states, 48 states have (on average 1.6041666666666667) internal successors, (77), 49 states have internal predecessors, (77), 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 02:00:43,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-21 02:00:43,760 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 02:00:43,760 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-21 02:00:43,761 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 02:00:43,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 02:00:43,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1809811384, now seen corresponding path program 1 times [2021-11-21 02:00:43,778 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 02:00:43,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [712155346] [2021-11-21 02:00:43,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 02:00:43,780 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 02:00:43,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef52bf5-0dcb-4b67-b8cb-42c0a06da633/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 02:00:43,783 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef52bf5-0dcb-4b67-b8cb-42c0a06da633/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 02:00:43,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef52bf5-0dcb-4b67-b8cb-42c0a06da633/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-21 02:00:43,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 02:00:43,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 02:00:43,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 02:00:44,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 02:00:44,108 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 02:00:44,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 02:00:44,251 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 02:00:44,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [712155346] [2021-11-21 02:00:44,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [712155346] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 02:00:44,253 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 02:00:44,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-21 02:00:44,255 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376998814] [2021-11-21 02:00:44,255 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 02:00:44,260 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 02:00:44,260 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 02:00:44,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 02:00:44,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-21 02:00:44,297 INFO L87 Difference]: Start difference. First operand has 50 states, 48 states have (on average 1.6041666666666667) internal successors, (77), 49 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 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 02:00:45,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 02:00:45,587 INFO L93 Difference]: Finished difference Result 103 states and 162 transitions. [2021-11-21 02:00:45,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 02:00:45,599 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-21 02:00:45,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 02:00:45,608 INFO L225 Difference]: With dead ends: 103 [2021-11-21 02:00:45,609 INFO L226 Difference]: Without dead ends: 18 [2021-11-21 02:00:45,613 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-11-21 02:00:45,617 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 71 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-21 02:00:45,618 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 168 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-21 02:00:45,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-11-21 02:00:45,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-11-21 02:00:45,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 17 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 02:00:45,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2021-11-21 02:00:45,647 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 7 [2021-11-21 02:00:45,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 02:00:45,648 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions. [2021-11-21 02:00:45,648 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 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 02:00:45,648 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2021-11-21 02:00:45,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-21 02:00:45,649 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 02:00:45,649 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 02:00:45,663 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef52bf5-0dcb-4b67-b8cb-42c0a06da633/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-21 02:00:45,858 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef52bf5-0dcb-4b67-b8cb-42c0a06da633/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 02:00:45,858 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 02:00:45,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 02:00:45,859 INFO L85 PathProgramCache]: Analyzing trace with hash 116728450, now seen corresponding path program 1 times [2021-11-21 02:00:45,861 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 02:00:45,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [879547499] [2021-11-21 02:00:45,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 02:00:45,863 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 02:00:45,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef52bf5-0dcb-4b67-b8cb-42c0a06da633/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 02:00:45,864 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef52bf5-0dcb-4b67-b8cb-42c0a06da633/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 02:00:45,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef52bf5-0dcb-4b67-b8cb-42c0a06da633/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-21 02:00:46,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 02:00:46,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-21 02:00:46,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 02:00:46,760 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 02:00:46,761 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 02:00:47,076 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 02:00:47,077 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 02:00:47,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [879547499] [2021-11-21 02:00:47,078 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [879547499] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 02:00:47,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1954679387] [2021-11-21 02:00:47,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 02:00:47,079 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-21 02:00:47,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef52bf5-0dcb-4b67-b8cb-42c0a06da633/bin/utaipan-TEXQjIfE4P/cvc4 [2021-11-21 02:00:47,084 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef52bf5-0dcb-4b67-b8cb-42c0a06da633/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-21 02:00:47,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef52bf5-0dcb-4b67-b8cb-42c0a06da633/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2021-11-21 02:00:47,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 02:00:47,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-21 02:00:47,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 02:00:47,598 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 02:00:47,598 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 02:00:47,764 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 02:00:47,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1954679387] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 02:00:47,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1081520334] [2021-11-21 02:00:47,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 02:00:47,765 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 02:00:47,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef52bf5-0dcb-4b67-b8cb-42c0a06da633/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 02:00:47,771 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef52bf5-0dcb-4b67-b8cb-42c0a06da633/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 02:00:47,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef52bf5-0dcb-4b67-b8cb-42c0a06da633/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-21 02:00:47,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 02:00:47,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-21 02:00:47,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 02:00:48,158 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 02:00:48,158 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 02:00:48,313 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 02:00:48,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1081520334] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 02:00:48,313 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-21 02:00:48,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 8 [2021-11-21 02:00:48,315 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761249288] [2021-11-21 02:00:48,315 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-21 02:00:48,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-21 02:00:48,316 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 02:00:48,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-21 02:00:48,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-11-21 02:00:48,317 INFO L87 Difference]: Start difference. First operand 18 states and 21 transitions. Second operand has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 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 02:00:52,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 02:00:52,317 INFO L93 Difference]: Finished difference Result 94 states and 111 transitions. [2021-11-21 02:00:52,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-21 02:00:52,318 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-21 02:00:52,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 02:00:52,320 INFO L225 Difference]: With dead ends: 94 [2021-11-21 02:00:52,321 INFO L226 Difference]: Without dead ends: 78 [2021-11-21 02:00:52,321 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-11-21 02:00:52,323 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 72 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2021-11-21 02:00:52,324 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 41 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2021-11-21 02:00:52,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-11-21 02:00:52,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 47. [2021-11-21 02:00:52,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.2173913043478262) internal successors, (56), 46 states have internal predecessors, (56), 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 02:00:52,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 56 transitions. [2021-11-21 02:00:52,339 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 56 transitions. Word has length 15 [2021-11-21 02:00:52,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 02:00:52,339 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 56 transitions. [2021-11-21 02:00:52,339 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 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 02:00:52,340 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 56 transitions. [2021-11-21 02:00:52,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-21 02:00:52,340 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 02:00:52,341 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 02:00:52,365 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef52bf5-0dcb-4b67-b8cb-42c0a06da633/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-21 02:00:52,567 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef52bf5-0dcb-4b67-b8cb-42c0a06da633/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2021-11-21 02:00:52,792 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef52bf5-0dcb-4b67-b8cb-42c0a06da633/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-21 02:00:52,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef52bf5-0dcb-4b67-b8cb-42c0a06da633/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef52bf5-0dcb-4b67-b8cb-42c0a06da633/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef52bf5-0dcb-4b67-b8cb-42c0a06da633/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 02:00:52,965 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 02:00:52,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 02:00:52,967 INFO L85 PathProgramCache]: Analyzing trace with hash 1891735812, now seen corresponding path program 1 times [2021-11-21 02:00:52,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 02:00:52,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [838992190] [2021-11-21 02:00:52,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 02:00:52,968 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 02:00:52,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef52bf5-0dcb-4b67-b8cb-42c0a06da633/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 02:00:52,969 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef52bf5-0dcb-4b67-b8cb-42c0a06da633/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 02:00:52,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef52bf5-0dcb-4b67-b8cb-42c0a06da633/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-21 02:00:53,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 02:00:53,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-21 02:00:53,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 02:00:53,847 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 02:00:53,847 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 02:00:54,248 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 02:00:54,248 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 02:00:54,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [838992190] [2021-11-21 02:00:54,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [838992190] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 02:00:54,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1846032672] [2021-11-21 02:00:54,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 02:00:54,250 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-21 02:00:54,250 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef52bf5-0dcb-4b67-b8cb-42c0a06da633/bin/utaipan-TEXQjIfE4P/cvc4 [2021-11-21 02:00:54,252 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef52bf5-0dcb-4b67-b8cb-42c0a06da633/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-21 02:00:54,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef52bf5-0dcb-4b67-b8cb-42c0a06da633/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2021-11-21 02:00:54,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 02:00:54,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-21 02:00:54,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 02:00:55,011 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 02:00:55,011 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 02:00:55,184 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 02:00:55,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1846032672] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 02:00:55,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2010210448] [2021-11-21 02:00:55,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 02:00:55,185 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 02:00:55,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef52bf5-0dcb-4b67-b8cb-42c0a06da633/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 02:00:55,187 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef52bf5-0dcb-4b67-b8cb-42c0a06da633/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 02:00:55,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef52bf5-0dcb-4b67-b8cb-42c0a06da633/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-21 02:00:55,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 02:00:55,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-21 02:00:55,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 02:00:55,679 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 02:00:55,679 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 02:00:56,022 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 02:00:56,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2010210448] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 02:00:56,022 INFO L186 FreeRefinementEngine]: Found 2 perfect and 4 imperfect interpolant sequences. [2021-11-21 02:00:56,023 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [6, 6, 6, 6] total 14 [2021-11-21 02:00:56,023 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964497678] [2021-11-21 02:00:56,023 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 02:00:56,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 02:00:56,024 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 02:00:56,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 02:00:56,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2021-11-21 02:00:56,025 INFO L87 Difference]: Start difference. First operand 47 states and 56 transitions. Second operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 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 02:00:58,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 02:00:58,611 INFO L93 Difference]: Finished difference Result 92 states and 110 transitions. [2021-11-21 02:00:58,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 02:00:58,613 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-21 02:00:58,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 02:00:58,614 INFO L225 Difference]: With dead ends: 92 [2021-11-21 02:00:58,615 INFO L226 Difference]: Without dead ends: 90 [2021-11-21 02:00:58,616 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-11-21 02:00:58,617 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 35 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-21 02:00:58,618 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 35 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-11-21 02:00:58,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2021-11-21 02:00:58,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 70. [2021-11-21 02:00:58,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 69 states have (on average 1.2028985507246377) internal successors, (83), 69 states have internal predecessors, (83), 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 02:00:58,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 83 transitions. [2021-11-21 02:00:58,641 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 83 transitions. Word has length 15 [2021-11-21 02:00:58,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 02:00:58,642 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 83 transitions. [2021-11-21 02:00:58,642 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 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 02:00:58,642 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 83 transitions. [2021-11-21 02:00:58,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-21 02:00:58,644 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 02:00:58,644 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1] [2021-11-21 02:00:58,676 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef52bf5-0dcb-4b67-b8cb-42c0a06da633/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-21 02:00:58,853 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef52bf5-0dcb-4b67-b8cb-42c0a06da633/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2021-11-21 02:00:59,063 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef52bf5-0dcb-4b67-b8cb-42c0a06da633/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-11-21 02:00:59,250 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef52bf5-0dcb-4b67-b8cb-42c0a06da633/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef52bf5-0dcb-4b67-b8cb-42c0a06da633/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef52bf5-0dcb-4b67-b8cb-42c0a06da633/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 02:00:59,251 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 02:00:59,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 02:00:59,251 INFO L85 PathProgramCache]: Analyzing trace with hash -865137092, now seen corresponding path program 1 times [2021-11-21 02:00:59,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 02:00:59,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [946942416] [2021-11-21 02:00:59,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 02:00:59,252 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 02:00:59,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef52bf5-0dcb-4b67-b8cb-42c0a06da633/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 02:00:59,256 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef52bf5-0dcb-4b67-b8cb-42c0a06da633/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 02:00:59,260 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef52bf5-0dcb-4b67-b8cb-42c0a06da633/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-21 02:01:00,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 02:01:00,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-21 02:01:00,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 02:01:00,784 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 44 proven. 6 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-11-21 02:01:00,785 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 02:01:01,347 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 44 proven. 6 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-11-21 02:01:01,347 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 02:01:01,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [946942416] [2021-11-21 02:01:01,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [946942416] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 02:01:01,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1201279026] [2021-11-21 02:01:01,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 02:01:01,349 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-21 02:01:01,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef52bf5-0dcb-4b67-b8cb-42c0a06da633/bin/utaipan-TEXQjIfE4P/cvc4 [2021-11-21 02:01:01,351 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef52bf5-0dcb-4b67-b8cb-42c0a06da633/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-21 02:01:01,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef52bf5-0dcb-4b67-b8cb-42c0a06da633/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2021-11-21 02:01:01,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 02:01:01,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-21 02:01:01,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 02:01:02,345 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 53 proven. 6 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-21 02:01:02,345 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 02:01:03,049 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 53 proven. 6 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-21 02:01:03,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1201279026] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 02:01:03,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [688835980] [2021-11-21 02:01:03,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 02:01:03,051 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 02:01:03,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef52bf5-0dcb-4b67-b8cb-42c0a06da633/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 02:01:03,052 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef52bf5-0dcb-4b67-b8cb-42c0a06da633/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 02:01:03,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef52bf5-0dcb-4b67-b8cb-42c0a06da633/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-21 02:01:03,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 02:01:03,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-21 02:01:03,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 02:01:03,724 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 53 proven. 6 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-21 02:01:03,725 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 02:01:04,141 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 53 proven. 6 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-21 02:01:04,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [688835980] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 02:01:04,142 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-21 02:01:04,142 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 5, 5, 5, 5] total 16 [2021-11-21 02:01:04,142 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106658119] [2021-11-21 02:01:04,143 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-21 02:01:04,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-21 02:01:04,144 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 02:01:04,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-21 02:01:04,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2021-11-21 02:01:04,145 INFO L87 Difference]: Start difference. First operand 70 states and 83 transitions. Second operand has 16 states, 16 states have (on average 4.125) internal successors, (66), 16 states have internal predecessors, (66), 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 02:01:17,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 02:01:17,173 INFO L93 Difference]: Finished difference Result 266 states and 342 transitions. [2021-11-21 02:01:17,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-11-21 02:01:17,175 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.125) internal successors, (66), 16 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-21 02:01:17,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 02:01:17,177 INFO L225 Difference]: With dead ends: 266 [2021-11-21 02:01:17,177 INFO L226 Difference]: Without dead ends: 220 [2021-11-21 02:01:17,180 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1057 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=762, Invalid=2778, Unknown=0, NotChecked=0, Total=3540 [2021-11-21 02:01:17,181 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 348 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 348 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2021-11-21 02:01:17,182 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [348 Valid, 70 Invalid, 409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 294 Invalid, 0 Unknown, 0 Unchecked, 8.4s Time] [2021-11-21 02:01:17,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2021-11-21 02:01:17,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 208. [2021-11-21 02:01:17,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 207 states have (on average 1.1497584541062802) internal successors, (238), 207 states have internal predecessors, (238), 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 02:01:17,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 238 transitions. [2021-11-21 02:01:17,223 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 238 transitions. Word has length 43 [2021-11-21 02:01:17,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 02:01:17,223 INFO L470 AbstractCegarLoop]: Abstraction has 208 states and 238 transitions. [2021-11-21 02:01:17,224 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.125) internal successors, (66), 16 states have internal predecessors, (66), 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 02:01:17,224 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 238 transitions. [2021-11-21 02:01:17,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-21 02:01:17,228 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 02:01:17,228 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 18, 15, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1] [2021-11-21 02:01:17,266 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef52bf5-0dcb-4b67-b8cb-42c0a06da633/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-21 02:01:17,460 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef52bf5-0dcb-4b67-b8cb-42c0a06da633/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-21 02:01:17,644 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef52bf5-0dcb-4b67-b8cb-42c0a06da633/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2021-11-21 02:01:17,838 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef52bf5-0dcb-4b67-b8cb-42c0a06da633/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef52bf5-0dcb-4b67-b8cb-42c0a06da633/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef52bf5-0dcb-4b67-b8cb-42c0a06da633/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt [2021-11-21 02:01:17,839 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 02:01:17,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 02:01:17,839 INFO L85 PathProgramCache]: Analyzing trace with hash 556208144, now seen corresponding path program 2 times [2021-11-21 02:01:17,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 02:01:17,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2024988977] [2021-11-21 02:01:17,845 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-21 02:01:17,845 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 02:01:17,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef52bf5-0dcb-4b67-b8cb-42c0a06da633/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 02:01:17,849 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef52bf5-0dcb-4b67-b8cb-42c0a06da633/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 02:01:17,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef52bf5-0dcb-4b67-b8cb-42c0a06da633/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-21 02:01:17,904 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-21 02:01:17,905 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 02:01:17,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-21 02:01:17,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 02:01:19,096 INFO L134 CoverageAnalysis]: Checked inductivity of 680 backedges. 0 proven. 318 refuted. 0 times theorem prover too weak. 362 trivial. 0 not checked. [2021-11-21 02:01:19,097 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 02:01:20,446 INFO L134 CoverageAnalysis]: Checked inductivity of 680 backedges. 0 proven. 318 refuted. 0 times theorem prover too weak. 362 trivial. 0 not checked. [2021-11-21 02:01:20,447 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 02:01:20,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2024988977] [2021-11-21 02:01:20,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2024988977] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 02:01:20,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [991063905] [2021-11-21 02:01:20,447 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-21 02:01:20,448 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-21 02:01:20,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef52bf5-0dcb-4b67-b8cb-42c0a06da633/bin/utaipan-TEXQjIfE4P/cvc4 [2021-11-21 02:01:20,449 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef52bf5-0dcb-4b67-b8cb-42c0a06da633/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-21 02:01:20,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef52bf5-0dcb-4b67-b8cb-42c0a06da633/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-11-21 02:01:20,648 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-21 02:01:20,648 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 02:01:20,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-21 02:01:20,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 02:01:21,880 INFO L134 CoverageAnalysis]: Checked inductivity of 680 backedges. 0 proven. 318 refuted. 0 times theorem prover too weak. 362 trivial. 0 not checked. [2021-11-21 02:01:21,880 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 02:01:22,880 INFO L134 CoverageAnalysis]: Checked inductivity of 680 backedges. 0 proven. 318 refuted. 0 times theorem prover too weak. 362 trivial. 0 not checked. [2021-11-21 02:01:22,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [991063905] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 02:01:22,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [287992979] [2021-11-21 02:01:22,881 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-21 02:01:22,881 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 02:01:22,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef52bf5-0dcb-4b67-b8cb-42c0a06da633/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 02:01:22,884 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef52bf5-0dcb-4b67-b8cb-42c0a06da633/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 02:01:22,885 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef52bf5-0dcb-4b67-b8cb-42c0a06da633/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-21 02:01:22,937 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-21 02:01:22,937 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 02:01:22,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-21 02:01:22,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 02:01:23,964 INFO L134 CoverageAnalysis]: Checked inductivity of 680 backedges. 0 proven. 318 refuted. 0 times theorem prover too weak. 362 trivial. 0 not checked. [2021-11-21 02:01:23,964 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 02:01:24,849 INFO L134 CoverageAnalysis]: Checked inductivity of 680 backedges. 0 proven. 318 refuted. 0 times theorem prover too weak. 362 trivial. 0 not checked. [2021-11-21 02:01:24,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [287992979] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 02:01:24,849 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-21 02:01:24,850 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 8 [2021-11-21 02:01:24,850 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329040738] [2021-11-21 02:01:24,850 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-21 02:01:24,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-21 02:01:24,851 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 02:01:24,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-21 02:01:24,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-21 02:01:24,853 INFO L87 Difference]: Start difference. First operand 208 states and 238 transitions. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 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 02:01:26,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 02:01:26,748 INFO L93 Difference]: Finished difference Result 208 states and 238 transitions. [2021-11-21 02:01:26,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 02:01:26,749 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2021-11-21 02:01:26,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 02:01:26,750 INFO L225 Difference]: With dead ends: 208 [2021-11-21 02:01:26,750 INFO L226 Difference]: Without dead ends: 0 [2021-11-21 02:01:26,752 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 543 GetRequests, 534 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-11-21 02:01:26,753 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 12 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-11-21 02:01:26,753 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 14 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-11-21 02:01:26,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-21 02:01:26,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-21 02:01:26,755 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 02:01:26,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-21 02:01:26,755 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 91 [2021-11-21 02:01:26,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 02:01:26,756 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-21 02:01:26,756 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 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 02:01:26,756 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-21 02:01:26,756 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-21 02:01:26,759 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-21 02:01:26,773 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef52bf5-0dcb-4b67-b8cb-42c0a06da633/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-21 02:01:26,997 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef52bf5-0dcb-4b67-b8cb-42c0a06da633/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-21 02:01:27,176 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef52bf5-0dcb-4b67-b8cb-42c0a06da633/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2021-11-21 02:01:27,373 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef52bf5-0dcb-4b67-b8cb-42c0a06da633/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef52bf5-0dcb-4b67-b8cb-42c0a06da633/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef52bf5-0dcb-4b67-b8cb-42c0a06da633/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt [2021-11-21 02:01:27,375 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-21 02:01:29,230 INFO L858 garLoopResultBuilder]: For program point L93-2(lines 93 104) no Hoare annotation was computed. [2021-11-21 02:01:29,230 INFO L854 garLoopResultBuilder]: At program point L93-3(lines 93 104) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~n~0#1| (_ bv5 32)))) (or (and (= |ULTIMATE.start_main_~i~0#1| (_ bv0 32)) .cse0) (and (= |ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv1 32)) (bvslt |ULTIMATE.start_main_~i~0#1| (_ bv50 32)) .cse0))) [2021-11-21 02:01:29,230 INFO L858 garLoopResultBuilder]: For program point L93-4(lines 93 104) no Hoare annotation was computed. [2021-11-21 02:01:29,231 INFO L858 garLoopResultBuilder]: For program point L118-2(lines 118 136) no Hoare annotation was computed. [2021-11-21 02:01:29,231 INFO L854 garLoopResultBuilder]: At program point L118-3(lines 118 136) the Hoare annotation is: (= |ULTIMATE.start_main_~n~0#1| (_ bv5 32)) [2021-11-21 02:01:29,231 INFO L858 garLoopResultBuilder]: For program point L118-4(lines 118 136) no Hoare annotation was computed. [2021-11-21 02:01:29,231 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-21 02:01:29,231 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-11-21 02:01:29,232 INFO L854 garLoopResultBuilder]: At program point L153(lines 111 155) the Hoare annotation is: (= |ULTIMATE.start_main_~n~0#1| (_ bv5 32)) [2021-11-21 02:01:29,232 INFO L858 garLoopResultBuilder]: For program point L120(line 120) no Hoare annotation was computed. [2021-11-21 02:01:29,232 INFO L858 garLoopResultBuilder]: For program point L129-2(lines 129 135) no Hoare annotation was computed. [2021-11-21 02:01:29,232 INFO L858 garLoopResultBuilder]: For program point L96-2(lines 96 101) no Hoare annotation was computed. [2021-11-21 02:01:29,233 INFO L854 garLoopResultBuilder]: At program point L129-3(lines 129 135) the Hoare annotation is: (= |ULTIMATE.start_main_~n~0#1| (_ bv5 32)) [2021-11-21 02:01:29,233 INFO L854 garLoopResultBuilder]: At program point L96-3(lines 96 101) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~n~0#1| (_ bv5 32)))) (or (and (= |ULTIMATE.start_main_~i~0#1| (_ bv0 32)) .cse0) (and (= |ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv1 32)) .cse0 (bvsle |ULTIMATE.start_main_~i~0#1| (_ bv5 32))))) [2021-11-21 02:01:29,233 INFO L858 garLoopResultBuilder]: For program point L96-4(lines 96 101) no Hoare annotation was computed. [2021-11-21 02:01:29,233 INFO L858 garLoopResultBuilder]: For program point L121-2(lines 121 128) no Hoare annotation was computed. [2021-11-21 02:01:29,233 INFO L854 garLoopResultBuilder]: At program point L121-3(lines 121 128) the Hoare annotation is: (= |ULTIMATE.start_main_~n~0#1| (_ bv5 32)) [2021-11-21 02:01:29,234 INFO L858 garLoopResultBuilder]: For program point L121-4(lines 121 128) no Hoare annotation was computed. [2021-11-21 02:01:29,234 INFO L858 garLoopResultBuilder]: For program point L80(lines 80 81) no Hoare annotation was computed. [2021-11-21 02:01:29,234 INFO L858 garLoopResultBuilder]: For program point L146-2(lines 146 152) no Hoare annotation was computed. [2021-11-21 02:01:29,234 INFO L854 garLoopResultBuilder]: At program point L146-3(lines 146 152) the Hoare annotation is: (= |ULTIMATE.start_main_~n~0#1| (_ bv5 32)) [2021-11-21 02:01:29,234 INFO L858 garLoopResultBuilder]: For program point L80-2(lines 80 81) no Hoare annotation was computed. [2021-11-21 02:01:29,235 INFO L858 garLoopResultBuilder]: For program point L146-4(lines 146 152) no Hoare annotation was computed. [2021-11-21 02:01:29,235 INFO L858 garLoopResultBuilder]: For program point L138-2(lines 138 144) no Hoare annotation was computed. [2021-11-21 02:01:29,235 INFO L854 garLoopResultBuilder]: At program point L138-3(lines 138 144) the Hoare annotation is: (= |ULTIMATE.start_main_~n~0#1| (_ bv5 32)) [2021-11-21 02:01:29,235 INFO L858 garLoopResultBuilder]: For program point L6(lines 6 8) no Hoare annotation was computed. [2021-11-21 02:01:29,236 INFO L858 garLoopResultBuilder]: For program point L138-4(lines 138 144) no Hoare annotation was computed. [2021-11-21 02:01:29,236 INFO L854 garLoopResultBuilder]: At program point L6-2(lines 5 10) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv1 32))) (.cse1 (= |ULTIMATE.start_main_~n~0#1| (_ bv5 32))) (.cse2 (bvsle |ULTIMATE.start_main_~i~0#1| (_ bv5 32)))) (or (and (not (= |ULTIMATE.start_main_~i~0#1| (_ bv0 32))) .cse0 .cse1 .cse2) (and .cse0 (not (= |ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~i~0#1|)) .cse1 .cse2))) [2021-11-21 02:01:29,236 INFO L858 garLoopResultBuilder]: For program point L7(line 7) no Hoare annotation was computed. [2021-11-21 02:01:29,236 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-11-21 02:01:29,236 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 7) no Hoare annotation was computed. [2021-11-21 02:01:29,237 INFO L854 garLoopResultBuilder]: At program point L82(lines 76 83) the Hoare annotation is: (= |ULTIMATE.start_main_~n~0#1| (_ bv5 32)) [2021-11-21 02:01:29,237 INFO L858 garLoopResultBuilder]: For program point L99(line 99) no Hoare annotation was computed. [2021-11-21 02:01:29,237 INFO L858 garLoopResultBuilder]: For program point L132-2(lines 132 133) no Hoare annotation was computed. [2021-11-21 02:01:29,237 INFO L858 garLoopResultBuilder]: For program point L99-2(line 99) no Hoare annotation was computed. [2021-11-21 02:01:29,238 INFO L854 garLoopResultBuilder]: At program point L132-3(lines 132 133) the Hoare annotation is: (= |ULTIMATE.start_main_~n~0#1| (_ bv5 32)) [2021-11-21 02:01:29,238 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-21 02:01:29,238 INFO L858 garLoopResultBuilder]: For program point L132-4(lines 132 133) no Hoare annotation was computed. [2021-11-21 02:01:29,238 INFO L858 garLoopResultBuilder]: For program point L124(lines 124 126) no Hoare annotation was computed. [2021-11-21 02:01:29,238 INFO L858 garLoopResultBuilder]: For program point L124-1(lines 124 126) no Hoare annotation was computed. [2021-11-21 02:01:29,239 INFO L858 garLoopResultBuilder]: For program point L149-2(lines 149 150) no Hoare annotation was computed. [2021-11-21 02:01:29,239 INFO L854 garLoopResultBuilder]: At program point L149-3(lines 149 150) the Hoare annotation is: (= |ULTIMATE.start_main_~n~0#1| (_ bv5 32)) [2021-11-21 02:01:29,239 INFO L858 garLoopResultBuilder]: For program point L149-4(lines 149 150) no Hoare annotation was computed. [2021-11-21 02:01:29,239 INFO L854 garLoopResultBuilder]: At program point L108(lines 85 109) the Hoare annotation is: (= |ULTIMATE.start_main_~n~0#1| (_ bv5 32)) [2021-11-21 02:01:29,240 INFO L858 garLoopResultBuilder]: For program point L141-2(lines 141 142) no Hoare annotation was computed. [2021-11-21 02:01:29,240 INFO L854 garLoopResultBuilder]: At program point L141-3(lines 141 142) the Hoare annotation is: (= |ULTIMATE.start_main_~n~0#1| (_ bv5 32)) [2021-11-21 02:01:29,240 INFO L858 garLoopResultBuilder]: For program point L141-4(lines 141 142) no Hoare annotation was computed. [2021-11-21 02:01:29,240 INFO L858 garLoopResultBuilder]: For program point L125-2(lines 125 126) no Hoare annotation was computed. [2021-11-21 02:01:29,240 INFO L854 garLoopResultBuilder]: At program point L125-3(lines 125 126) the Hoare annotation is: (= |ULTIMATE.start_main_~n~0#1| (_ bv5 32)) [2021-11-21 02:01:29,241 INFO L858 garLoopResultBuilder]: For program point L117(line 117) no Hoare annotation was computed. [2021-11-21 02:01:29,245 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1] [2021-11-21 02:01:29,246 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-21 02:01:29,266 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 02:01:29 BoogieIcfgContainer [2021-11-21 02:01:29,267 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-21 02:01:29,267 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-21 02:01:29,267 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-21 02:01:29,268 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-21 02:01:29,268 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 02:00:43" (3/4) ... [2021-11-21 02:01:29,271 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-21 02:01:29,286 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2021-11-21 02:01:29,287 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-11-21 02:01:29,287 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-21 02:01:29,288 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-21 02:01:29,339 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef52bf5-0dcb-4b67-b8cb-42c0a06da633/bin/utaipan-TEXQjIfE4P/witness.graphml [2021-11-21 02:01:29,339 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-21 02:01:29,340 INFO L158 Benchmark]: Toolchain (without parser) took 62364.43ms. Allocated memory was 69.2MB in the beginning and 100.7MB in the end (delta: 31.5MB). Free memory was 48.5MB in the beginning and 59.6MB in the end (delta: -11.1MB). Peak memory consumption was 19.5MB. Max. memory is 16.1GB. [2021-11-21 02:01:29,340 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 69.2MB. Free memory was 50.0MB in the beginning and 50.0MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 02:01:29,340 INFO L158 Benchmark]: CACSL2BoogieTranslator took 349.73ms. Allocated memory is still 69.2MB. Free memory was 48.4MB in the beginning and 48.2MB in the end (delta: 153.9kB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-21 02:01:29,341 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.95ms. Allocated memory is still 69.2MB. Free memory was 48.0MB in the beginning and 45.7MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-21 02:01:29,341 INFO L158 Benchmark]: Boogie Preprocessor took 46.41ms. Allocated memory is still 69.2MB. Free memory was 45.7MB in the beginning and 43.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-21 02:01:29,342 INFO L158 Benchmark]: RCFGBuilder took 16202.81ms. Allocated memory is still 69.2MB. Free memory was 43.6MB in the beginning and 40.4MB in the end (delta: 3.3MB). Peak memory consumption was 15.1MB. Max. memory is 16.1GB. [2021-11-21 02:01:29,342 INFO L158 Benchmark]: TraceAbstraction took 45633.86ms. Allocated memory was 69.2MB in the beginning and 100.7MB in the end (delta: 31.5MB). Free memory was 40.1MB in the beginning and 64.7MB in the end (delta: -24.7MB). Peak memory consumption was 45.7MB. Max. memory is 16.1GB. [2021-11-21 02:01:29,343 INFO L158 Benchmark]: Witness Printer took 71.73ms. Allocated memory is still 100.7MB. Free memory was 64.7MB in the beginning and 59.6MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-21 02:01:29,345 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 69.2MB. Free memory was 50.0MB in the beginning and 50.0MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 349.73ms. Allocated memory is still 69.2MB. Free memory was 48.4MB in the beginning and 48.2MB in the end (delta: 153.9kB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 53.95ms. Allocated memory is still 69.2MB. Free memory was 48.0MB in the beginning and 45.7MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 46.41ms. Allocated memory is still 69.2MB. Free memory was 45.7MB in the beginning and 43.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 16202.81ms. Allocated memory is still 69.2MB. Free memory was 43.6MB in the beginning and 40.4MB in the end (delta: 3.3MB). Peak memory consumption was 15.1MB. Max. memory is 16.1GB. * TraceAbstraction took 45633.86ms. Allocated memory was 69.2MB in the beginning and 100.7MB in the end (delta: 31.5MB). Free memory was 40.1MB in the beginning and 64.7MB in the end (delta: -24.7MB). Peak memory consumption was 45.7MB. Max. memory is 16.1GB. * Witness Printer took 71.73ms. Allocated memory is still 100.7MB. Free memory was 64.7MB in the beginning and 59.6MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. 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: 7]: 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 1 procedures, 50 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 45.5s, OverallIterations: 5, TraceHistogramMax: 18, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 22.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.9s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 538 SdHoareTripleChecker+Valid, 17.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 538 mSDsluCounter, 328 SdHoareTripleChecker+Invalid, 16.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 244 mSDsCounter, 141 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 487 IncrementalHoareTripleChecker+Invalid, 628 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 141 mSolverCounterUnsat, 84 mSDtfsCounter, 487 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1024 GetRequests, 930 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1125 ImplicationChecksByTransitivity, 7.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=208occurred in iteration=4, InterpolantAutomatonStates: 74, 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, 63 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 15 LocationsWithAnnotation, 15 PreInvPairs, 87 NumberOfFragments, 101 HoareAnnotationTreeSize, 15 FomulaSimplifications, 591 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 15 FomulaSimplificationsInter, 1932 FormulaSimplificationTreeSizeReductionInter, 1.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 3.0s SatisfiabilityAnalysisTime, 14.2s InterpolantComputationTime, 499 NumberOfCodeBlocks, 247 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 972 ConstructedInterpolants, 0 QuantifiedInterpolants, 2811 SizeOfPredicates, 32 NumberOfNonLiveVariables, 796 ConjunctsInSsa, 57 ConjunctsInUnsatCore, 26 InterpolantComputations, 4 PerfectInterpolantSequences, 2724/4704 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: (((!(i == 0bv32) && cond == 1bv32) && n == 5bv32) && ~bvsle32(i, 5bv32)) || (((cond == 1bv32 && !(j == i)) && n == 5bv32) && ~bvsle32(i, 5bv32)) - InvariantResult [Line: 93]: Loop Invariant Derived loop invariant: (i == 0bv32 && n == 5bv32) || ((cond == 1bv32 && ~bvslt32(i, 50bv32)) && n == 5bv32) - InvariantResult [Line: 129]: Loop Invariant Derived loop invariant: n == 5bv32 - InvariantResult [Line: 118]: Loop Invariant Derived loop invariant: n == 5bv32 - InvariantResult [Line: 85]: Loop Invariant Derived loop invariant: n == 5bv32 - InvariantResult [Line: 125]: Loop Invariant Derived loop invariant: n == 5bv32 - InvariantResult [Line: 76]: Loop Invariant Derived loop invariant: n == 5bv32 - InvariantResult [Line: 149]: Loop Invariant Derived loop invariant: n == 5bv32 - InvariantResult [Line: 111]: Loop Invariant Derived loop invariant: n == 5bv32 - InvariantResult [Line: 146]: Loop Invariant Derived loop invariant: n == 5bv32 - InvariantResult [Line: 96]: Loop Invariant Derived loop invariant: (i == 0bv32 && n == 5bv32) || ((cond == 1bv32 && n == 5bv32) && ~bvsle32(i, 5bv32)) - InvariantResult [Line: 138]: Loop Invariant Derived loop invariant: n == 5bv32 - InvariantResult [Line: 132]: Loop Invariant Derived loop invariant: n == 5bv32 - InvariantResult [Line: 141]: Loop Invariant Derived loop invariant: n == 5bv32 - InvariantResult [Line: 121]: Loop Invariant Derived loop invariant: n == 5bv32 RESULT: Ultimate proved your program to be correct! [2021-11-21 02:01:29,496 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef52bf5-0dcb-4b67-b8cb-42c0a06da633/bin/utaipan-TEXQjIfE4P/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