./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/verifythis/elimination_max.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_aafefc04-8421-4677-9819-e6033c9fa1ba/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafefc04-8421-4677-9819-e6033c9fa1ba/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_aafefc04-8421-4677-9819-e6033c9fa1ba/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafefc04-8421-4677-9819-e6033c9fa1ba/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/verifythis/elimination_max.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafefc04-8421-4677-9819-e6033c9fa1ba/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_aafefc04-8421-4677-9819-e6033c9fa1ba/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 0bc7b1b837bfd7794f122f6504da8d835bb2276ae4afe0cc0d058d385032d49e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 01:50:32,268 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 01:50:32,271 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 01:50:32,306 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 01:50:32,306 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 01:50:32,308 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 01:50:32,310 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 01:50:32,312 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 01:50:32,315 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 01:50:32,316 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 01:50:32,317 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 01:50:32,319 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 01:50:32,320 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 01:50:32,321 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 01:50:32,323 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 01:50:32,325 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 01:50:32,326 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 01:50:32,327 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 01:50:32,330 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 01:50:32,333 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 01:50:32,335 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 01:50:32,341 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 01:50:32,342 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 01:50:32,343 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 01:50:32,347 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 01:50:32,348 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 01:50:32,349 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 01:50:32,350 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 01:50:32,350 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 01:50:32,359 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 01:50:32,360 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 01:50:32,361 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 01:50:32,362 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 01:50:32,363 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 01:50:32,364 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 01:50:32,365 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 01:50:32,365 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 01:50:32,366 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 01:50:32,366 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 01:50:32,367 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 01:50:32,368 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 01:50:32,374 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafefc04-8421-4677-9819-e6033c9fa1ba/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-21 01:50:32,411 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 01:50:32,411 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 01:50:32,412 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 01:50:32,412 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 01:50:32,412 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 01:50:32,413 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 01:50:32,413 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 01:50:32,413 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 01:50:32,413 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 01:50:32,414 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 01:50:32,414 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 01:50:32,414 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 01:50:32,414 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 01:50:32,415 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 01:50:32,415 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 01:50:32,415 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 01:50:32,415 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 01:50:32,416 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 01:50:32,416 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 01:50:32,417 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 01:50:32,417 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 01:50:32,417 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 01:50:32,417 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 01:50:32,417 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 01:50:32,418 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 01:50:32,418 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 01:50:32,418 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 01:50:32,418 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 01:50:32,419 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 01:50:32,419 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 01:50:32,419 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 01:50:32,425 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 01:50:32,426 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:50:32,426 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 01:50:32,426 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 01:50:32,426 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 01:50:32,427 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 01:50:32,427 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 01:50:32,427 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 01:50:32,427 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 01:50:32,427 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 01:50:32,428 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_aafefc04-8421-4677-9819-e6033c9fa1ba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafefc04-8421-4677-9819-e6033c9fa1ba/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0bc7b1b837bfd7794f122f6504da8d835bb2276ae4afe0cc0d058d385032d49e [2021-11-21 01:50:32,726 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 01:50:32,761 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 01:50:32,763 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 01:50:32,765 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 01:50:32,766 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 01:50:32,767 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafefc04-8421-4677-9819-e6033c9fa1ba/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/verifythis/elimination_max.c [2021-11-21 01:50:32,846 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafefc04-8421-4677-9819-e6033c9fa1ba/bin/utaipan-TEXQjIfE4P/data/91120cba8/de7422ee35684b88ae8fd6dec5da9b99/FLAGc36d28733 [2021-11-21 01:50:33,307 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 01:50:33,308 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafefc04-8421-4677-9819-e6033c9fa1ba/sv-benchmarks/c/verifythis/elimination_max.c [2021-11-21 01:50:33,314 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafefc04-8421-4677-9819-e6033c9fa1ba/bin/utaipan-TEXQjIfE4P/data/91120cba8/de7422ee35684b88ae8fd6dec5da9b99/FLAGc36d28733 [2021-11-21 01:50:33,666 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafefc04-8421-4677-9819-e6033c9fa1ba/bin/utaipan-TEXQjIfE4P/data/91120cba8/de7422ee35684b88ae8fd6dec5da9b99 [2021-11-21 01:50:33,672 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 01:50:33,674 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 01:50:33,675 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 01:50:33,676 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 01:50:33,679 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 01:50:33,680 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:50:33" (1/1) ... [2021-11-21 01:50:33,681 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@785922b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:50:33, skipping insertion in model container [2021-11-21 01:50:33,682 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:50:33" (1/1) ... [2021-11-21 01:50:33,689 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 01:50:33,703 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:50:33,893 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_aafefc04-8421-4677-9819-e6033c9fa1ba/sv-benchmarks/c/verifythis/elimination_max.c[485,498] [2021-11-21 01:50:33,908 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:50:33,920 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 01:50:33,932 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_aafefc04-8421-4677-9819-e6033c9fa1ba/sv-benchmarks/c/verifythis/elimination_max.c[485,498] [2021-11-21 01:50:33,939 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:50:33,953 INFO L208 MainTranslator]: Completed translation [2021-11-21 01:50:33,954 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:50:33 WrapperNode [2021-11-21 01:50:33,954 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 01:50:33,955 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 01:50:33,956 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 01:50:33,956 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 01:50:33,963 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:50:33" (1/1) ... [2021-11-21 01:50:33,971 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:50:33" (1/1) ... [2021-11-21 01:50:33,991 INFO L137 Inliner]: procedures = 18, calls = 20, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 63 [2021-11-21 01:50:33,991 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 01:50:33,992 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 01:50:33,992 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 01:50:33,993 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 01:50:34,001 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:50:33" (1/1) ... [2021-11-21 01:50:34,002 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:50:33" (1/1) ... [2021-11-21 01:50:34,004 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:50:33" (1/1) ... [2021-11-21 01:50:34,004 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:50:33" (1/1) ... [2021-11-21 01:50:34,021 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:50:33" (1/1) ... [2021-11-21 01:50:34,027 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:50:33" (1/1) ... [2021-11-21 01:50:34,035 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:50:33" (1/1) ... [2021-11-21 01:50:34,042 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 01:50:34,043 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 01:50:34,044 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 01:50:34,045 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 01:50:34,046 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:50:33" (1/1) ... [2021-11-21 01:50:34,054 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:50:34,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafefc04-8421-4677-9819-e6033c9fa1ba/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:50:34,085 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafefc04-8421-4677-9819-e6033c9fa1ba/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 01:50:34,101 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafefc04-8421-4677-9819-e6033c9fa1ba/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 01:50:34,131 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 01:50:34,131 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-21 01:50:34,131 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-21 01:50:34,131 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 01:50:34,132 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-21 01:50:34,132 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 01:50:34,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 01:50:34,132 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-21 01:50:34,133 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-21 01:50:34,133 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-21 01:50:34,133 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 01:50:34,202 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 01:50:34,204 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 01:50:34,363 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 01:50:34,437 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 01:50:34,437 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-21 01:50:34,439 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:50:34 BoogieIcfgContainer [2021-11-21 01:50:34,440 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 01:50:34,442 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 01:50:34,442 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 01:50:34,445 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 01:50:34,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:50:33" (1/3) ... [2021-11-21 01:50:34,446 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69cd5120 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:50:34, skipping insertion in model container [2021-11-21 01:50:34,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:50:33" (2/3) ... [2021-11-21 01:50:34,447 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69cd5120 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:50:34, skipping insertion in model container [2021-11-21 01:50:34,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:50:34" (3/3) ... [2021-11-21 01:50:34,448 INFO L111 eAbstractionObserver]: Analyzing ICFG elimination_max.c [2021-11-21 01:50:34,453 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 01:50:34,453 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-21 01:50:34,502 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 01:50:34,510 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-21 01:50:34,510 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-21 01:50:34,526 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-21 01:50:34,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-21 01:50:34,531 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:50:34,532 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:50:34,533 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:50:34,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:50:34,545 INFO L85 PathProgramCache]: Analyzing trace with hash 953681700, now seen corresponding path program 1 times [2021-11-21 01:50:34,554 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:50:34,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825227238] [2021-11-21 01:50:34,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:50:34,555 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:50:34,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:50:34,882 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-21 01:50:34,883 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:50:34,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825227238] [2021-11-21 01:50:34,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825227238] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:50:34,884 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:50:34,884 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-21 01:50:34,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492437930] [2021-11-21 01:50:34,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:50:34,891 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-21 01:50:34,891 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:50:34,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-21 01:50:34,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-21 01:50:34,919 INFO L87 Difference]: Start difference. First operand has 20 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-21 01:50:35,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:50:35,024 INFO L93 Difference]: Finished difference Result 35 states and 42 transitions. [2021-11-21 01:50:35,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 01:50:35,026 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 14 [2021-11-21 01:50:35,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:50:35,033 INFO L225 Difference]: With dead ends: 35 [2021-11-21 01:50:35,033 INFO L226 Difference]: Without dead ends: 23 [2021-11-21 01:50:35,036 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-21 01:50:35,040 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 13 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:50:35,042 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 50 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:50:35,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-11-21 01:50:35,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-11-21 01:50:35,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-21 01:50:35,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2021-11-21 01:50:35,076 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 14 [2021-11-21 01:50:35,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:50:35,077 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2021-11-21 01:50:35,078 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-21 01:50:35,078 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2021-11-21 01:50:35,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-21 01:50:35,079 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:50:35,080 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:50:35,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 01:50:35,080 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:50:35,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:50:35,081 INFO L85 PathProgramCache]: Analyzing trace with hash -722687172, now seen corresponding path program 1 times [2021-11-21 01:50:35,081 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:50:35,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995755802] [2021-11-21 01:50:35,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:50:35,082 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:50:35,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:50:35,261 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-21 01:50:35,262 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:50:35,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995755802] [2021-11-21 01:50:35,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995755802] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:50:35,263 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:50:35,263 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-21 01:50:35,263 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266582273] [2021-11-21 01:50:35,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:50:35,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-21 01:50:35,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:50:35,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-21 01:50:35,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-21 01:50:35,266 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-21 01:50:35,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:50:35,342 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2021-11-21 01:50:35,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 01:50:35,343 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 21 [2021-11-21 01:50:35,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:50:35,344 INFO L225 Difference]: With dead ends: 23 [2021-11-21 01:50:35,344 INFO L226 Difference]: Without dead ends: 0 [2021-11-21 01:50:35,345 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-21 01:50:35,346 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 10 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:50:35,347 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 52 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:50:35,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-21 01:50:35,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-21 01:50:35,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:50:35,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-21 01:50:35,349 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2021-11-21 01:50:35,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:50:35,350 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-21 01:50:35,350 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-21 01:50:35,350 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-21 01:50:35,350 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-21 01:50:35,353 INFO L764 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-21 01:50:35,353 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-21 01:50:35,355 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-21 01:50:35,387 INFO L854 garLoopResultBuilder]: At program point L35-2(lines 25 37) the Hoare annotation is: (= ((as const (Array Int Int)) 0) (select |#memory_int| |ULTIMATE.start_main_~a~0#1.base|)) [2021-11-21 01:50:35,387 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-21 01:50:35,387 INFO L861 garLoopResultBuilder]: At program point L19(line 19) the Hoare annotation is: true [2021-11-21 01:50:35,387 INFO L858 garLoopResultBuilder]: For program point L19-1(line 19) no Hoare annotation was computed. [2021-11-21 01:50:35,388 INFO L854 garLoopResultBuilder]: At program point L46(line 46) the Hoare annotation is: (and (= ((as const (Array Int Int)) 0) (select |#memory_int| |ULTIMATE.start_main_~a~0#1.base|)) (= |ULTIMATE.start_main_#t~mem16#1| 0) (= |ULTIMATE.start_main_#t~mem15#1| 0)) [2021-11-21 01:50:35,388 INFO L858 garLoopResultBuilder]: For program point L46-1(line 46) no Hoare annotation was computed. [2021-11-21 01:50:35,388 INFO L854 garLoopResultBuilder]: At program point L42(line 42) the Hoare annotation is: (= ((as const (Array Int Int)) 0) (select |#memory_int| |ULTIMATE.start_main_~a~0#1.base|)) [2021-11-21 01:50:35,389 INFO L858 garLoopResultBuilder]: For program point L42-1(line 42) no Hoare annotation was computed. [2021-11-21 01:50:35,389 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-21 01:50:35,389 INFO L854 garLoopResultBuilder]: At program point L43(line 43) the Hoare annotation is: (and (= ((as const (Array Int Int)) 0) (select |#memory_int| |ULTIMATE.start_main_~a~0#1.base|)) (<= |ULTIMATE.start_main_#t~mem12#1| |ULTIMATE.start_main_#t~mem13#1|)) [2021-11-21 01:50:35,390 INFO L858 garLoopResultBuilder]: For program point L43-1(line 43) no Hoare annotation was computed. [2021-11-21 01:50:35,390 INFO L854 garLoopResultBuilder]: At program point L45-3(lines 45 47) the Hoare annotation is: (= ((as const (Array Int Int)) 0) (select |#memory_int| |ULTIMATE.start_main_~a~0#1.base|)) [2021-11-21 01:50:35,390 INFO L861 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 7 9) the Hoare annotation is: true [2021-11-21 01:50:35,390 INFO L858 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 7 9) no Hoare annotation was computed. [2021-11-21 01:50:35,394 INFO L861 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 10 12) the Hoare annotation is: true [2021-11-21 01:50:35,394 INFO L858 garLoopResultBuilder]: For program point L11(line 11) no Hoare annotation was computed. [2021-11-21 01:50:35,394 INFO L858 garLoopResultBuilder]: For program point L11-1(line 11) no Hoare annotation was computed. [2021-11-21 01:50:35,395 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 10 12) no Hoare annotation was computed. [2021-11-21 01:50:35,403 INFO L858 garLoopResultBuilder]: For program point L11-3(lines 10 12) no Hoare annotation was computed. [2021-11-21 01:50:35,404 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 11) no Hoare annotation was computed. [2021-11-21 01:50:35,410 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-21 01:50:35,411 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-21 01:50:35,421 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.IllegalArgumentException: unknown symbol (const Int (Array Int Int)) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:240) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:394) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:1) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpression(ModelTranslationContainer.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpressionToString(ModelTranslationContainer.java:89) at de.uni_freiburg.informatik.ultimate.core.lib.results.InvariantResult.getLongDescription(InvariantResult.java:65) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:86) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResultReporter.reportResult(CegarLoopResultReporter.java:141) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.createInvariantResults(TraceAbstractionStarter.java:453) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:192) 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 01:50:35,425 INFO L158 Benchmark]: Toolchain (without parser) took 1749.12ms. Allocated memory was 79.7MB in the beginning and 96.5MB in the end (delta: 16.8MB). Free memory was 47.0MB in the beginning and 73.3MB in the end (delta: -26.3MB). Peak memory consumption was 22.4MB. Max. memory is 16.1GB. [2021-11-21 01:50:35,431 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 79.7MB. Free memory was 36.2MB in the beginning and 36.2MB in the end (delta: 77.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 01:50:35,433 INFO L158 Benchmark]: CACSL2BoogieTranslator took 279.28ms. Allocated memory was 79.7MB in the beginning and 96.5MB in the end (delta: 16.8MB). Free memory was 46.8MB in the beginning and 72.4MB in the end (delta: -25.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-21 01:50:35,434 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.34ms. Allocated memory is still 96.5MB. Free memory was 72.4MB in the beginning and 70.8MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 01:50:35,434 INFO L158 Benchmark]: Boogie Preprocessor took 50.30ms. Allocated memory is still 96.5MB. Free memory was 70.8MB in the beginning and 69.7MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-21 01:50:35,435 INFO L158 Benchmark]: RCFGBuilder took 396.49ms. Allocated memory is still 96.5MB. Free memory was 69.4MB in the beginning and 57.4MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-21 01:50:35,435 INFO L158 Benchmark]: TraceAbstraction took 980.66ms. Allocated memory is still 96.5MB. Free memory was 57.1MB in the beginning and 73.3MB in the end (delta: -16.2MB). Peak memory consumption was 17.3MB. Max. memory is 16.1GB. [2021-11-21 01:50:35,438 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 79.7MB. Free memory was 36.2MB in the beginning and 36.2MB in the end (delta: 77.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 279.28ms. Allocated memory was 79.7MB in the beginning and 96.5MB in the end (delta: 16.8MB). Free memory was 46.8MB in the beginning and 72.4MB in the end (delta: -25.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.34ms. Allocated memory is still 96.5MB. Free memory was 72.4MB in the beginning and 70.8MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 50.30ms. Allocated memory is still 96.5MB. Free memory was 70.8MB in the beginning and 69.7MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 396.49ms. Allocated memory is still 96.5MB. Free memory was 69.4MB in the beginning and 57.4MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 980.66ms. Allocated memory is still 96.5MB. Free memory was 57.1MB in the beginning and 73.3MB in the end (delta: -16.2MB). Peak memory consumption was 17.3MB. 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: 11]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.9s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 25 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 23 mSDsluCounter, 102 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 110 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 116 IncrementalHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 23 mSDtfsCounter, 116 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=1, InterpolantAutomatonStates: 14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 11 PreInvPairs, 13 NumberOfFragments, 44 HoareAnnotationTreeSize, 11 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 33 ConstructedInterpolants, 0 QuantifiedInterpolants, 149 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 6/6 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 - ExceptionOrErrorResult: IllegalArgumentException: unknown symbol (const Int (Array Int Int)) de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalArgumentException: unknown symbol (const Int (Array Int Int)): de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:240) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-21 01:50:35,492 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafefc04-8421-4677-9819-e6033c9fa1ba/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally 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_aafefc04-8421-4677-9819-e6033c9fa1ba/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafefc04-8421-4677-9819-e6033c9fa1ba/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_aafefc04-8421-4677-9819-e6033c9fa1ba/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafefc04-8421-4677-9819-e6033c9fa1ba/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/verifythis/elimination_max.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafefc04-8421-4677-9819-e6033c9fa1ba/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_aafefc04-8421-4677-9819-e6033c9fa1ba/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 0bc7b1b837bfd7794f122f6504da8d835bb2276ae4afe0cc0d058d385032d49e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 01:50:37,943 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 01:50:37,946 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 01:50:37,983 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 01:50:37,984 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 01:50:37,985 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 01:50:37,987 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 01:50:37,990 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 01:50:37,992 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 01:50:37,994 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 01:50:37,995 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 01:50:37,997 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 01:50:37,997 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 01:50:37,999 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 01:50:38,000 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 01:50:38,002 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 01:50:38,003 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 01:50:38,004 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 01:50:38,007 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 01:50:38,010 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 01:50:38,012 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 01:50:38,013 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 01:50:38,015 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 01:50:38,016 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 01:50:38,020 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 01:50:38,023 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 01:50:38,024 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 01:50:38,025 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 01:50:38,026 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 01:50:38,027 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 01:50:38,027 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 01:50:38,028 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 01:50:38,029 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 01:50:38,030 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 01:50:38,031 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 01:50:38,031 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 01:50:38,032 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 01:50:38,033 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 01:50:38,033 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 01:50:38,034 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 01:50:38,035 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 01:50:38,048 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafefc04-8421-4677-9819-e6033c9fa1ba/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-21 01:50:38,097 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 01:50:38,098 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 01:50:38,099 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 01:50:38,099 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 01:50:38,100 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 01:50:38,100 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 01:50:38,100 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 01:50:38,101 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 01:50:38,101 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 01:50:38,101 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 01:50:38,102 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 01:50:38,103 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 01:50:38,104 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 01:50:38,104 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 01:50:38,105 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 01:50:38,105 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 01:50:38,105 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 01:50:38,105 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 01:50:38,105 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 01:50:38,106 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-21 01:50:38,106 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-21 01:50:38,106 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 01:50:38,106 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 01:50:38,107 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 01:50:38,107 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 01:50:38,107 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 01:50:38,107 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-21 01:50:38,108 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 01:50:38,108 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:50:38,108 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 01:50:38,108 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 01:50:38,109 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 01:50:38,109 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-21 01:50:38,109 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-21 01:50:38,109 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 01:50:38,110 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 01:50:38,110 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 01:50:38,110 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_aafefc04-8421-4677-9819-e6033c9fa1ba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafefc04-8421-4677-9819-e6033c9fa1ba/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0bc7b1b837bfd7794f122f6504da8d835bb2276ae4afe0cc0d058d385032d49e [2021-11-21 01:50:38,485 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 01:50:38,510 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 01:50:38,515 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 01:50:38,516 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 01:50:38,517 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 01:50:38,518 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafefc04-8421-4677-9819-e6033c9fa1ba/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/verifythis/elimination_max.c [2021-11-21 01:50:38,589 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafefc04-8421-4677-9819-e6033c9fa1ba/bin/utaipan-TEXQjIfE4P/data/ca8532043/6abb9b73f6804a209209ed657b97ffde/FLAG6e7a1d671 [2021-11-21 01:50:39,069 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 01:50:39,071 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafefc04-8421-4677-9819-e6033c9fa1ba/sv-benchmarks/c/verifythis/elimination_max.c [2021-11-21 01:50:39,078 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafefc04-8421-4677-9819-e6033c9fa1ba/bin/utaipan-TEXQjIfE4P/data/ca8532043/6abb9b73f6804a209209ed657b97ffde/FLAG6e7a1d671 [2021-11-21 01:50:39,429 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafefc04-8421-4677-9819-e6033c9fa1ba/bin/utaipan-TEXQjIfE4P/data/ca8532043/6abb9b73f6804a209209ed657b97ffde [2021-11-21 01:50:39,433 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 01:50:39,437 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 01:50:39,439 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 01:50:39,440 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 01:50:39,443 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 01:50:39,444 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:50:39" (1/1) ... [2021-11-21 01:50:39,447 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a24c511 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:50:39, skipping insertion in model container [2021-11-21 01:50:39,447 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:50:39" (1/1) ... [2021-11-21 01:50:39,455 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 01:50:39,474 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:50:39,639 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_aafefc04-8421-4677-9819-e6033c9fa1ba/sv-benchmarks/c/verifythis/elimination_max.c[485,498] [2021-11-21 01:50:39,658 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:50:39,708 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 01:50:39,732 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_aafefc04-8421-4677-9819-e6033c9fa1ba/sv-benchmarks/c/verifythis/elimination_max.c[485,498] [2021-11-21 01:50:39,763 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:50:39,778 INFO L208 MainTranslator]: Completed translation [2021-11-21 01:50:39,779 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:50:39 WrapperNode [2021-11-21 01:50:39,779 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 01:50:39,780 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 01:50:39,780 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 01:50:39,780 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 01:50:39,787 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:50:39" (1/1) ... [2021-11-21 01:50:39,796 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:50:39" (1/1) ... [2021-11-21 01:50:39,816 INFO L137 Inliner]: procedures = 20, calls = 20, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 61 [2021-11-21 01:50:39,816 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 01:50:39,817 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 01:50:39,817 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 01:50:39,817 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 01:50:39,826 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:50:39" (1/1) ... [2021-11-21 01:50:39,826 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:50:39" (1/1) ... [2021-11-21 01:50:39,829 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:50:39" (1/1) ... [2021-11-21 01:50:39,830 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:50:39" (1/1) ... [2021-11-21 01:50:39,837 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:50:39" (1/1) ... [2021-11-21 01:50:39,840 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:50:39" (1/1) ... [2021-11-21 01:50:39,842 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:50:39" (1/1) ... [2021-11-21 01:50:39,844 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 01:50:39,845 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 01:50:39,846 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 01:50:39,846 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 01:50:39,846 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:50:39" (1/1) ... [2021-11-21 01:50:39,853 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:50:39,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafefc04-8421-4677-9819-e6033c9fa1ba/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:50:39,877 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafefc04-8421-4677-9819-e6033c9fa1ba/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 01:50:39,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafefc04-8421-4677-9819-e6033c9fa1ba/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 01:50:39,924 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 01:50:39,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-21 01:50:39,924 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-21 01:50:39,924 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-21 01:50:39,925 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-21 01:50:39,925 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-21 01:50:39,925 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 01:50:39,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 01:50:39,926 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-21 01:50:39,926 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-21 01:50:39,926 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 01:50:40,038 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 01:50:40,040 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 01:50:40,260 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 01:50:40,267 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 01:50:40,267 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-21 01:50:40,293 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:50:40 BoogieIcfgContainer [2021-11-21 01:50:40,293 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 01:50:40,295 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 01:50:40,295 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 01:50:40,298 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 01:50:40,298 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:50:39" (1/3) ... [2021-11-21 01:50:40,299 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b86046e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:50:40, skipping insertion in model container [2021-11-21 01:50:40,299 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:50:39" (2/3) ... [2021-11-21 01:50:40,299 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b86046e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:50:40, skipping insertion in model container [2021-11-21 01:50:40,300 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:50:40" (3/3) ... [2021-11-21 01:50:40,301 INFO L111 eAbstractionObserver]: Analyzing ICFG elimination_max.c [2021-11-21 01:50:40,306 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 01:50:40,307 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-21 01:50:40,396 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 01:50:40,411 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-21 01:50:40,411 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-21 01:50:40,436 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 23 states have internal predecessors, (30), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-21 01:50:40,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-21 01:50:40,441 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:50:40,441 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:50:40,442 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:50:40,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:50:40,448 INFO L85 PathProgramCache]: Analyzing trace with hash 434333419, now seen corresponding path program 1 times [2021-11-21 01:50:40,461 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:50:40,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [365595114] [2021-11-21 01:50:40,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:50:40,463 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:50:40,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafefc04-8421-4677-9819-e6033c9fa1ba/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:50:40,470 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafefc04-8421-4677-9819-e6033c9fa1ba/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:50:40,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafefc04-8421-4677-9819-e6033c9fa1ba/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-21 01:50:40,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:50:40,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-21 01:50:40,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:50:40,713 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-21 01:50:40,713 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:50:40,771 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-21 01:50:40,771 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:50:40,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [365595114] [2021-11-21 01:50:40,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [365595114] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-21 01:50:40,773 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-21 01:50:40,773 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2021-11-21 01:50:40,774 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642675252] [2021-11-21 01:50:40,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:50:40,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-21 01:50:40,779 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:50:40,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-21 01:50:40,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-21 01:50:40,817 INFO L87 Difference]: Start difference. First operand has 30 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 23 states have internal predecessors, (30), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-21 01:50:40,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:50:40,847 INFO L93 Difference]: Finished difference Result 57 states and 76 transitions. [2021-11-21 01:50:40,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-21 01:50:40,849 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 21 [2021-11-21 01:50:40,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:50:40,857 INFO L225 Difference]: With dead ends: 57 [2021-11-21 01:50:40,857 INFO L226 Difference]: Without dead ends: 26 [2021-11-21 01:50:40,860 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-21 01:50:40,866 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:50:40,868 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 01:50:40,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-11-21 01:50:40,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2021-11-21 01:50:40,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 states have internal predecessors, (22), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-21 01:50:40,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2021-11-21 01:50:40,921 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 21 [2021-11-21 01:50:40,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:50:40,922 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2021-11-21 01:50:40,923 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-21 01:50:40,923 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2021-11-21 01:50:40,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-21 01:50:40,926 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:50:40,926 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:50:40,942 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafefc04-8421-4677-9819-e6033c9fa1ba/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-21 01:50:41,138 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafefc04-8421-4677-9819-e6033c9fa1ba/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:50:41,139 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:50:41,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:50:41,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1040778997, now seen corresponding path program 1 times [2021-11-21 01:50:41,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:50:41,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1537566455] [2021-11-21 01:50:41,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:50:41,144 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:50:41,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafefc04-8421-4677-9819-e6033c9fa1ba/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:50:41,146 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafefc04-8421-4677-9819-e6033c9fa1ba/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:50:41,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafefc04-8421-4677-9819-e6033c9fa1ba/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-21 01:50:41,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:50:41,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-21 01:50:41,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:50:41,967 INFO L354 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2021-11-21 01:50:41,968 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 22 [2021-11-21 01:50:42,078 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-21 01:50:42,078 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:50:42,184 INFO L354 Elim1Store]: treesize reduction 9, result has 43.8 percent of original size [2021-11-21 01:50:42,185 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 11 [2021-11-21 01:50:43,117 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-21 01:50:43,117 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:50:43,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1537566455] [2021-11-21 01:50:43,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1537566455] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:50:43,118 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:50:43,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 10] imperfect sequences [] total 19 [2021-11-21 01:50:43,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109125764] [2021-11-21 01:50:43,119 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:50:43,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-21 01:50:43,120 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:50:43,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-21 01:50:43,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2021-11-21 01:50:43,122 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand has 19 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 14 states have internal predecessors, (25), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-21 01:50:43,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:50:43,719 INFO L93 Difference]: Finished difference Result 39 states and 46 transitions. [2021-11-21 01:50:43,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-21 01:50:43,720 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 14 states have internal predecessors, (25), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 21 [2021-11-21 01:50:43,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:50:43,722 INFO L225 Difference]: With dead ends: 39 [2021-11-21 01:50:43,722 INFO L226 Difference]: Without dead ends: 37 [2021-11-21 01:50:43,724 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=86, Invalid=466, Unknown=0, NotChecked=0, Total=552 [2021-11-21 01:50:43,725 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 33 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 35 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:50:43,726 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 203 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 164 Invalid, 0 Unknown, 35 Unchecked, 0.3s Time] [2021-11-21 01:50:43,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-11-21 01:50:43,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35. [2021-11-21 01:50:43,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 25 states have (on average 1.16) internal successors, (29), 26 states have internal predecessors, (29), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-21 01:50:43,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 41 transitions. [2021-11-21 01:50:43,736 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 41 transitions. Word has length 21 [2021-11-21 01:50:43,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:50:43,736 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 41 transitions. [2021-11-21 01:50:43,737 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 14 states have internal predecessors, (25), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-21 01:50:43,737 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions. [2021-11-21 01:50:43,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-21 01:50:43,738 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:50:43,738 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:50:43,750 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafefc04-8421-4677-9819-e6033c9fa1ba/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-21 01:50:43,949 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafefc04-8421-4677-9819-e6033c9fa1ba/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:50:43,950 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:50:43,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:50:43,950 INFO L85 PathProgramCache]: Analyzing trace with hash 953578392, now seen corresponding path program 1 times [2021-11-21 01:50:43,952 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:50:43,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1756988716] [2021-11-21 01:50:43,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:50:43,954 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:50:43,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafefc04-8421-4677-9819-e6033c9fa1ba/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:50:43,955 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafefc04-8421-4677-9819-e6033c9fa1ba/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:50:43,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafefc04-8421-4677-9819-e6033c9fa1ba/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-21 01:50:44,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:50:44,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-21 01:50:44,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:50:45,296 INFO L354 Elim1Store]: treesize reduction 35, result has 40.7 percent of original size [2021-11-21 01:50:45,296 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 49 treesize of output 50 [2021-11-21 01:50:45,593 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:50:45,593 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:50:53,107 INFO L354 Elim1Store]: treesize reduction 79, result has 21.0 percent of original size [2021-11-21 01:50:53,107 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 49 treesize of output 36 [2021-11-21 01:50:53,424 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-21 01:50:53,424 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:50:53,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1756988716] [2021-11-21 01:50:53,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1756988716] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:50:53,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1929079412] [2021-11-21 01:50:53,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:50:53,425 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-21 01:50:53,425 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafefc04-8421-4677-9819-e6033c9fa1ba/bin/utaipan-TEXQjIfE4P/cvc4 [2021-11-21 01:50:53,429 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafefc04-8421-4677-9819-e6033c9fa1ba/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-21 01:50:53,441 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafefc04-8421-4677-9819-e6033c9fa1ba/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-11-21 01:50:53,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:50:53,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-21 01:50:53,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:50:53,576 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2021-11-21 01:50:57,759 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~a~0#1.base_BEFORE_CALL_3| (_ BitVec 32))) (= ((as const (Array (_ BitVec 32) (_ BitVec 32))) (_ bv0 32)) (select |c_#memory_int| |v_ULTIMATE.start_main_~a~0#1.base_BEFORE_CALL_3|))) is different from true [2021-11-21 01:50:59,058 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 23 [2021-11-21 01:50:59,205 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-21 01:50:59,206 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:51:33,712 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-21 01:51:33,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1929079412] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:51:33,712 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-21 01:51:33,712 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 7] imperfect sequences [17, 12] total 32 [2021-11-21 01:51:33,713 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654948736] [2021-11-21 01:51:33,713 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:51:33,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-21 01:51:33,713 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:51:33,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-21 01:51:33,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=816, Unknown=15, NotChecked=58, Total=992 [2021-11-21 01:51:33,715 INFO L87 Difference]: Start difference. First operand 35 states and 41 transitions. Second operand has 13 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 5 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-21 01:51:37,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:51:37,933 INFO L93 Difference]: Finished difference Result 45 states and 49 transitions. [2021-11-21 01:51:37,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-21 01:51:37,934 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 5 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 23 [2021-11-21 01:51:37,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:51:37,937 INFO L225 Difference]: With dead ends: 45 [2021-11-21 01:51:37,937 INFO L226 Difference]: Without dead ends: 43 [2021-11-21 01:51:37,938 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 56 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 314 ImplicationChecksByTransitivity, 45.8s TimeCoverageRelationStatistics Valid=131, Invalid=978, Unknown=17, NotChecked=64, Total=1190 [2021-11-21 01:51:37,939 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 25 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 65 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:51:37,940 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 134 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 65 Unchecked, 0.1s Time] [2021-11-21 01:51:37,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-11-21 01:51:37,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 34. [2021-11-21 01:51:37,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 25 states have (on average 1.12) internal successors, (28), 25 states have internal predecessors, (28), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-21 01:51:37,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 36 transitions. [2021-11-21 01:51:37,948 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 36 transitions. Word has length 23 [2021-11-21 01:51:37,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:51:37,948 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 36 transitions. [2021-11-21 01:51:37,949 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 5 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-21 01:51:37,949 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions. [2021-11-21 01:51:37,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-21 01:51:37,950 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:51:37,950 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:51:37,967 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafefc04-8421-4677-9819-e6033c9fa1ba/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-21 01:51:38,163 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafefc04-8421-4677-9819-e6033c9fa1ba/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2021-11-21 01:51:38,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafefc04-8421-4677-9819-e6033c9fa1ba/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafefc04-8421-4677-9819-e6033c9fa1ba/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt [2021-11-21 01:51:38,362 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:51:38,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:51:38,362 INFO L85 PathProgramCache]: Analyzing trace with hash -1270583733, now seen corresponding path program 1 times [2021-11-21 01:51:38,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:51:38,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1967129180] [2021-11-21 01:51:38,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:51:38,363 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:51:38,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafefc04-8421-4677-9819-e6033c9fa1ba/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:51:38,364 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafefc04-8421-4677-9819-e6033c9fa1ba/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:51:38,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafefc04-8421-4677-9819-e6033c9fa1ba/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-21 01:51:38,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:51:38,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-21 01:51:38,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:51:38,486 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-21 01:51:38,529 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-21 01:51:38,529 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:51:38,589 INFO L354 Elim1Store]: treesize reduction 9, result has 43.8 percent of original size [2021-11-21 01:51:38,590 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 11 [2021-11-21 01:51:38,674 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-21 01:51:38,674 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:51:38,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1967129180] [2021-11-21 01:51:38,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1967129180] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:51:38,675 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:51:38,675 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-11-21 01:51:38,675 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312696475] [2021-11-21 01:51:38,675 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:51:38,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-21 01:51:38,676 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:51:38,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-21 01:51:38,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-11-21 01:51:38,677 INFO L87 Difference]: Start difference. First operand 34 states and 36 transitions. Second operand has 12 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 5 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-11-21 01:51:38,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:51:38,868 INFO L93 Difference]: Finished difference Result 55 states and 62 transitions. [2021-11-21 01:51:38,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-21 01:51:38,874 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 5 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 28 [2021-11-21 01:51:38,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:51:38,875 INFO L225 Difference]: With dead ends: 55 [2021-11-21 01:51:38,875 INFO L226 Difference]: Without dead ends: 53 [2021-11-21 01:51:38,875 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2021-11-21 01:51:38,876 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 18 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:51:38,877 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 221 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-21 01:51:38,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-11-21 01:51:38,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 47. [2021-11-21 01:51:38,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 34 states have (on average 1.1470588235294117) internal successors, (39), 35 states have internal predecessors, (39), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2021-11-21 01:51:38,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 53 transitions. [2021-11-21 01:51:38,887 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 53 transitions. Word has length 28 [2021-11-21 01:51:38,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:51:38,887 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 53 transitions. [2021-11-21 01:51:38,887 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 5 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-11-21 01:51:38,888 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 53 transitions. [2021-11-21 01:51:38,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-21 01:51:38,889 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:51:38,889 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:51:38,911 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafefc04-8421-4677-9819-e6033c9fa1ba/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-21 01:51:39,107 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafefc04-8421-4677-9819-e6033c9fa1ba/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:51:39,108 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:51:39,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:51:39,108 INFO L85 PathProgramCache]: Analyzing trace with hash -1943727032, now seen corresponding path program 1 times [2021-11-21 01:51:39,109 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:51:39,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1443572740] [2021-11-21 01:51:39,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:51:39,109 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:51:39,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafefc04-8421-4677-9819-e6033c9fa1ba/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:51:39,110 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafefc04-8421-4677-9819-e6033c9fa1ba/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:51:39,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafefc04-8421-4677-9819-e6033c9fa1ba/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-21 01:51:39,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:51:39,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-21 01:51:39,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:51:40,342 INFO L354 Elim1Store]: treesize reduction 18, result has 14.3 percent of original size [2021-11-21 01:51:40,342 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 20 [2021-11-21 01:51:40,444 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:51:40,444 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:51:41,222 INFO L354 Elim1Store]: treesize reduction 73, result has 17.0 percent of original size [2021-11-21 01:51:41,222 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 37 treesize of output 22 [2021-11-21 01:51:41,358 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-21 01:51:41,359 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:51:41,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1443572740] [2021-11-21 01:51:41,359 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1443572740] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:51:41,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [396868961] [2021-11-21 01:51:41,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:51:41,360 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-21 01:51:41,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafefc04-8421-4677-9819-e6033c9fa1ba/bin/utaipan-TEXQjIfE4P/cvc4 [2021-11-21 01:51:41,365 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafefc04-8421-4677-9819-e6033c9fa1ba/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-21 01:51:41,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafefc04-8421-4677-9819-e6033c9fa1ba/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2021-11-21 01:51:41,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:51:41,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-21 01:51:41,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:51:41,450 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2021-11-21 01:51:45,126 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~a~0#1.base_BEFORE_CALL_9| (_ BitVec 32))) (= ((as const (Array (_ BitVec 32) (_ BitVec 32))) (_ bv0 32)) (select |c_#memory_int| |v_ULTIMATE.start_main_~a~0#1.base_BEFORE_CALL_9|))) is different from true [2021-11-21 01:51:48,011 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~a~0#1.base_BEFORE_CALL_10| (_ BitVec 32))) (= ((as const (Array (_ BitVec 32) (_ BitVec 32))) (_ bv0 32)) (select |c_#memory_int| |v_ULTIMATE.start_main_~a~0#1.base_BEFORE_CALL_10|))) is different from true [2021-11-21 01:51:48,102 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 23 [2021-11-21 01:51:48,206 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 2 not checked. [2021-11-21 01:51:48,207 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:52:16,766 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-21 01:52:16,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [396868961] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-21 01:52:16,767 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-21 01:52:16,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [15, 10, 9] total 29 [2021-11-21 01:52:16,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523745568] [2021-11-21 01:52:16,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:52:16,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-21 01:52:16,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:52:16,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-21 01:52:16,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=608, Unknown=16, NotChecked=102, Total=812 [2021-11-21 01:52:16,769 INFO L87 Difference]: Start difference. First operand 47 states and 53 transitions. Second operand has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-21 01:52:16,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:52:16,850 INFO L93 Difference]: Finished difference Result 56 states and 62 transitions. [2021-11-21 01:52:16,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-21 01:52:16,851 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 30 [2021-11-21 01:52:16,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:52:16,852 INFO L225 Difference]: With dead ends: 56 [2021-11-21 01:52:16,852 INFO L226 Difference]: Without dead ends: 54 [2021-11-21 01:52:16,853 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 84 SyntacticMatches, 5 SemanticMatches, 28 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 36.3s TimeCoverageRelationStatistics Valid=90, Invalid=658, Unknown=16, NotChecked=106, Total=870 [2021-11-21 01:52:16,854 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 5 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 22 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:52:16,854 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 132 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 22 Unchecked, 0.0s Time] [2021-11-21 01:52:16,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-11-21 01:52:16,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 40. [2021-11-21 01:52:16,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 29 states have (on average 1.103448275862069) internal successors, (32), 30 states have internal predecessors, (32), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-21 01:52:16,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 42 transitions. [2021-11-21 01:52:16,862 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 42 transitions. Word has length 30 [2021-11-21 01:52:16,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:52:16,862 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 42 transitions. [2021-11-21 01:52:16,862 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-21 01:52:16,862 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 42 transitions. [2021-11-21 01:52:16,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:52:16,863 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:52:16,864 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:52:16,875 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafefc04-8421-4677-9819-e6033c9fa1ba/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-11-21 01:52:17,076 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafefc04-8421-4677-9819-e6033c9fa1ba/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2021-11-21 01:52:17,275 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafefc04-8421-4677-9819-e6033c9fa1ba/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafefc04-8421-4677-9819-e6033c9fa1ba/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt [2021-11-21 01:52:17,275 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:52:17,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:52:17,276 INFO L85 PathProgramCache]: Analyzing trace with hash 483067350, now seen corresponding path program 1 times [2021-11-21 01:52:17,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:52:17,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [213952779] [2021-11-21 01:52:17,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:52:17,276 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:52:17,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafefc04-8421-4677-9819-e6033c9fa1ba/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:52:17,277 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafefc04-8421-4677-9819-e6033c9fa1ba/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:52:17,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafefc04-8421-4677-9819-e6033c9fa1ba/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-21 01:52:17,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:52:17,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-21 01:52:17,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:52:17,670 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-21 01:52:17,670 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:52:17,918 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-21 01:52:17,918 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:52:17,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [213952779] [2021-11-21 01:52:17,919 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [213952779] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:52:17,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [937027594] [2021-11-21 01:52:17,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:52:17,919 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-21 01:52:17,919 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafefc04-8421-4677-9819-e6033c9fa1ba/bin/utaipan-TEXQjIfE4P/cvc4 [2021-11-21 01:52:17,920 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafefc04-8421-4677-9819-e6033c9fa1ba/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-21 01:52:17,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafefc04-8421-4677-9819-e6033c9fa1ba/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2021-11-21 01:52:18,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:52:18,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-21 01:52:18,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:52:18,044 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2021-11-21 01:52:20,135 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~a~0#1.base_BEFORE_CALL_13| (_ BitVec 32))) (= ((as const (Array (_ BitVec 32) (_ BitVec 32))) (_ bv0 32)) (select |c_#memory_int| |v_ULTIMATE.start_main_~a~0#1.base_BEFORE_CALL_13|))) is different from true [2021-11-21 01:52:22,201 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~a~0#1.base_BEFORE_CALL_14| (_ BitVec 32))) (= ((as const (Array (_ BitVec 32) (_ BitVec 32))) (_ bv0 32)) (select |c_#memory_int| |v_ULTIMATE.start_main_~a~0#1.base_BEFORE_CALL_14|))) is different from true [2021-11-21 01:52:24,267 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~a~0#1.base_BEFORE_CALL_15| (_ BitVec 32))) (= ((as const (Array (_ BitVec 32) (_ BitVec 32))) (_ bv0 32)) (select |c_#memory_int| |v_ULTIMATE.start_main_~a~0#1.base_BEFORE_CALL_15|))) is different from true [2021-11-21 01:52:24,326 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 23 [2021-11-21 01:52:24,431 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 8 not checked. [2021-11-21 01:52:24,431 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:52:34,827 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-21 01:52:34,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [937027594] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:52:34,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1661197650] [2021-11-21 01:52:34,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:52:34,828 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:52:34,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafefc04-8421-4677-9819-e6033c9fa1ba/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:52:34,830 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafefc04-8421-4677-9819-e6033c9fa1ba/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:52:34,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafefc04-8421-4677-9819-e6033c9fa1ba/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-21 01:52:34,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:52:34,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-21 01:52:34,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:52:34,899 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2021-11-21 01:52:36,929 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~a~0#1.base_BEFORE_CALL_19| (_ BitVec 32))) (= ((as const (Array (_ BitVec 32) (_ BitVec 32))) (_ bv0 32)) (select |c_#memory_int| |v_ULTIMATE.start_main_~a~0#1.base_BEFORE_CALL_19|))) is different from true [2021-11-21 01:52:38,987 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~a~0#1.base_BEFORE_CALL_20| (_ BitVec 32))) (= ((as const (Array (_ BitVec 32) (_ BitVec 32))) (_ bv0 32)) (select |c_#memory_int| |v_ULTIMATE.start_main_~a~0#1.base_BEFORE_CALL_20|))) is different from true [2021-11-21 01:52:41,048 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~a~0#1.base_BEFORE_CALL_21| (_ BitVec 32))) (= ((as const (Array (_ BitVec 32) (_ BitVec 32))) (_ bv0 32)) (select |c_#memory_int| |v_ULTIMATE.start_main_~a~0#1.base_BEFORE_CALL_21|))) is different from true [2021-11-21 01:52:41,108 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 23 [2021-11-21 01:52:41,144 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 11 not checked. [2021-11-21 01:52:41,144 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:52:41,318 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-21 01:52:41,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1661197650] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:52:41,319 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-21 01:52:41,319 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 6, 10, 7, 12, 7] total 30 [2021-11-21 01:52:41,319 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974696795] [2021-11-21 01:52:41,319 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-21 01:52:41,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-11-21 01:52:41,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:52:41,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-11-21 01:52:41,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=480, Unknown=11, NotChecked=294, Total=870 [2021-11-21 01:52:41,321 INFO L87 Difference]: Start difference. First operand 40 states and 42 transitions. Second operand has 30 states, 28 states have (on average 2.7142857142857144) internal successors, (76), 28 states have internal predecessors, (76), 11 states have call successors, (19), 10 states have call predecessors, (19), 8 states have return successors, (18), 8 states have call predecessors, (18), 8 states have call successors, (18) [2021-11-21 01:52:43,722 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_main_~a~0#1.base_BEFORE_CALL_19| (_ BitVec 32))) (= ((as const (Array (_ BitVec 32) (_ BitVec 32))) (_ bv0 32)) (select |c_#memory_int| |v_ULTIMATE.start_main_~a~0#1.base_BEFORE_CALL_19|))) (exists ((|v_ULTIMATE.start_main_~a~0#1.base_BEFORE_CALL_13| (_ BitVec 32))) (= ((as const (Array (_ BitVec 32) (_ BitVec 32))) (_ bv0 32)) (select |c_#memory_int| |v_ULTIMATE.start_main_~a~0#1.base_BEFORE_CALL_13|)))) is different from true [2021-11-21 01:52:52,594 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_main_~a~0#1.base_BEFORE_CALL_20| (_ BitVec 32))) (= ((as const (Array (_ BitVec 32) (_ BitVec 32))) (_ bv0 32)) (select |c_#memory_int| |v_ULTIMATE.start_main_~a~0#1.base_BEFORE_CALL_20|))) (exists ((|v_ULTIMATE.start_main_~a~0#1.base_BEFORE_CALL_14| (_ BitVec 32))) (= ((as const (Array (_ BitVec 32) (_ BitVec 32))) (_ bv0 32)) (select |c_#memory_int| |v_ULTIMATE.start_main_~a~0#1.base_BEFORE_CALL_14|)))) is different from true [2021-11-21 01:52:54,773 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_main_~a~0#1.base_BEFORE_CALL_15| (_ BitVec 32))) (= ((as const (Array (_ BitVec 32) (_ BitVec 32))) (_ bv0 32)) (select |c_#memory_int| |v_ULTIMATE.start_main_~a~0#1.base_BEFORE_CALL_15|))) (exists ((|v_ULTIMATE.start_main_~a~0#1.base_BEFORE_CALL_21| (_ BitVec 32))) (= ((as const (Array (_ BitVec 32) (_ BitVec 32))) (_ bv0 32)) (select |c_#memory_int| |v_ULTIMATE.start_main_~a~0#1.base_BEFORE_CALL_21|)))) is different from true [2021-11-21 01:52:54,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:52:54,886 INFO L93 Difference]: Finished difference Result 60 states and 68 transitions. [2021-11-21 01:52:54,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-21 01:52:54,887 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 28 states have (on average 2.7142857142857144) internal successors, (76), 28 states have internal predecessors, (76), 11 states have call successors, (19), 10 states have call predecessors, (19), 8 states have return successors, (18), 8 states have call predecessors, (18), 8 states have call successors, (18) Word has length 36 [2021-11-21 01:52:54,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:52:54,887 INFO L225 Difference]: With dead ends: 60 [2021-11-21 01:52:54,887 INFO L226 Difference]: Without dead ends: 0 [2021-11-21 01:52:54,889 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 178 SyntacticMatches, 6 SemanticMatches, 46 ConstructedPredicates, 9 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 36.1s TimeCoverageRelationStatistics Valid=218, Invalid=1286, Unknown=14, NotChecked=738, Total=2256 [2021-11-21 01:52:54,890 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 32 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 308 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:52:54,891 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 155 Invalid, 491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 166 Invalid, 0 Unknown, 308 Unchecked, 0.3s Time] [2021-11-21 01:52:54,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-21 01:52:54,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-21 01:52:54,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:52:54,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-21 01:52:54,892 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 36 [2021-11-21 01:52:54,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:52:54,892 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-21 01:52:54,893 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 28 states have (on average 2.7142857142857144) internal successors, (76), 28 states have internal predecessors, (76), 11 states have call successors, (19), 10 states have call predecessors, (19), 8 states have return successors, (18), 8 states have call predecessors, (18), 8 states have call successors, (18) [2021-11-21 01:52:54,893 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-21 01:52:54,893 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-21 01:52:54,895 INFO L764 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-21 01:52:54,905 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafefc04-8421-4677-9819-e6033c9fa1ba/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-21 01:52:55,105 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafefc04-8421-4677-9819-e6033c9fa1ba/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2021-11-21 01:52:55,327 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafefc04-8421-4677-9819-e6033c9fa1ba/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-21 01:52:55,504 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafefc04-8421-4677-9819-e6033c9fa1ba/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafefc04-8421-4677-9819-e6033c9fa1ba/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafefc04-8421-4677-9819-e6033c9fa1ba/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:52:55,506 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-21 01:52:59,994 INFO L854 garLoopResultBuilder]: At program point L35-2(lines 25 37) the Hoare annotation is: (let ((.cse0 ((as const (Array (_ BitVec 32) (_ BitVec 32))) (_ bv0 32)))) (and (= (_ bv0 32) |ULTIMATE.start_main_#t~malloc6#1.offset|) (= .cse0 (select |#memory_int| |ULTIMATE.start_main_~a~0#1.base|)) (bvsge |ULTIMATE.start_main_~n~0#1| (_ bv0 32)) (bvslt |ULTIMATE.start_main_~n~0#1| (_ bv1073741824 32)) (= .cse0 (select |#memory_int| |ULTIMATE.start_main_#t~malloc6#1.base|)))) [2021-11-21 01:52:59,994 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-21 01:52:59,994 INFO L858 garLoopResultBuilder]: For program point L25-2(lines 25 37) no Hoare annotation was computed. [2021-11-21 01:52:59,994 INFO L861 garLoopResultBuilder]: At program point L19(line 19) the Hoare annotation is: true [2021-11-21 01:52:59,994 INFO L858 garLoopResultBuilder]: For program point L19-1(line 19) no Hoare annotation was computed. [2021-11-21 01:52:59,995 INFO L861 garLoopResultBuilder]: At program point L50(lines 16 51) the Hoare annotation is: true [2021-11-21 01:52:59,995 INFO L854 garLoopResultBuilder]: At program point L46(line 46) the Hoare annotation is: (and (= ((as const (Array (_ BitVec 32) (_ BitVec 32))) (_ bv0 32)) (select |#memory_int| |ULTIMATE.start_main_~a~0#1.base|)) (exists ((|ULTIMATE.start_main_~i~0#1| (_ BitVec 32)) (|ULTIMATE.start_main_~a~0#1.offset| (_ BitVec 32)) (|ULTIMATE.start_main_~x~0#1| (_ BitVec 32))) (let ((.cse0 ((as const (Array (_ BitVec 32) (_ BitVec 32))) (_ bv0 32)))) (and (= (select .cse0 (bvadd (bvmul |ULTIMATE.start_main_~x~0#1| (_ bv4 32)) |ULTIMATE.start_main_~a~0#1.offset|)) |ULTIMATE.start_main_#t~mem16#1|) (= (select .cse0 (bvadd (bvmul |ULTIMATE.start_main_~i~0#1| (_ bv4 32)) |ULTIMATE.start_main_~a~0#1.offset|)) |ULTIMATE.start_main_#t~mem15#1|))))) [2021-11-21 01:52:59,995 INFO L858 garLoopResultBuilder]: For program point L46-1(line 46) no Hoare annotation was computed. [2021-11-21 01:52:59,995 INFO L854 garLoopResultBuilder]: At program point L42(line 42) the Hoare annotation is: (let ((.cse0 ((as const (Array (_ BitVec 32) (_ BitVec 32))) (_ bv0 32)))) (and (= (_ bv0 32) |ULTIMATE.start_main_#t~malloc6#1.offset|) (= .cse0 (select |#memory_int| |ULTIMATE.start_main_~a~0#1.base|)) (bvsge |ULTIMATE.start_main_~n~0#1| (_ bv0 32)) (bvslt |ULTIMATE.start_main_~n~0#1| (_ bv1073741824 32)) (= .cse0 (select |#memory_int| |ULTIMATE.start_main_#t~malloc6#1.base|)))) [2021-11-21 01:52:59,995 INFO L858 garLoopResultBuilder]: For program point L42-1(line 42) no Hoare annotation was computed. [2021-11-21 01:52:59,995 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-11-21 01:52:59,995 INFO L858 garLoopResultBuilder]: For program point L-1-1(line -1) no Hoare annotation was computed. [2021-11-21 01:52:59,995 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-21 01:52:59,995 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-11-21 01:52:59,996 INFO L854 garLoopResultBuilder]: At program point L43(line 43) the Hoare annotation is: (and (= ((as const (Array (_ BitVec 32) (_ BitVec 32))) (_ bv0 32)) (select |#memory_int| |ULTIMATE.start_main_~a~0#1.base|)) (exists ((|ULTIMATE.start_main_~i~0#1| (_ BitVec 32)) (|ULTIMATE.start_main_~a~0#1.offset| (_ BitVec 32)) (|ULTIMATE.start_main_~x~0#1| (_ BitVec 32))) (let ((.cse0 ((as const (Array (_ BitVec 32) (_ BitVec 32))) (_ bv0 32)))) (and (= (select .cse0 (bvadd (bvmul |ULTIMATE.start_main_~i~0#1| (_ bv4 32)) |ULTIMATE.start_main_~a~0#1.offset|)) |ULTIMATE.start_main_#t~mem12#1|) (= (select .cse0 (bvadd (bvmul |ULTIMATE.start_main_~x~0#1| (_ bv4 32)) |ULTIMATE.start_main_~a~0#1.offset|)) |ULTIMATE.start_main_#t~mem13#1|))))) [2021-11-21 01:52:59,996 INFO L858 garLoopResultBuilder]: For program point L45-2(lines 45 47) no Hoare annotation was computed. [2021-11-21 01:52:59,996 INFO L858 garLoopResultBuilder]: For program point L43-1(line 43) no Hoare annotation was computed. [2021-11-21 01:52:59,996 INFO L854 garLoopResultBuilder]: At program point L45-3(lines 45 47) the Hoare annotation is: (= ((as const (Array (_ BitVec 32) (_ BitVec 32))) (_ bv0 32)) (select |#memory_int| |ULTIMATE.start_main_~a~0#1.base|)) [2021-11-21 01:52:59,996 INFO L858 garLoopResultBuilder]: For program point L45-4(lines 45 47) no Hoare annotation was computed. [2021-11-21 01:52:59,996 INFO L858 garLoopResultBuilder]: For program point L35(lines 35 36) no Hoare annotation was computed. [2021-11-21 01:52:59,996 INFO L861 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 7 9) the Hoare annotation is: true [2021-11-21 01:52:59,996 INFO L858 garLoopResultBuilder]: For program point L8(line 8) no Hoare annotation was computed. [2021-11-21 01:52:59,996 INFO L858 garLoopResultBuilder]: For program point L8-2(lines 7 9) no Hoare annotation was computed. [2021-11-21 01:52:59,996 INFO L858 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 7 9) no Hoare annotation was computed. [2021-11-21 01:52:59,997 INFO L861 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 10 12) the Hoare annotation is: true [2021-11-21 01:52:59,997 INFO L858 garLoopResultBuilder]: For program point L11(line 11) no Hoare annotation was computed. [2021-11-21 01:52:59,997 INFO L858 garLoopResultBuilder]: For program point L11-1(line 11) no Hoare annotation was computed. [2021-11-21 01:52:59,997 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 10 12) no Hoare annotation was computed. [2021-11-21 01:52:59,997 INFO L858 garLoopResultBuilder]: For program point L11-3(lines 10 12) no Hoare annotation was computed. [2021-11-21 01:52:59,997 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 11) no Hoare annotation was computed. [2021-11-21 01:53:00,000 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2021-11-21 01:53:00,002 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-21 01:53:00,007 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: translation of (const (_ BitVec 32) (Array (_ BitVec 32) (_ BitVec 32))) not yet implemented, please contact Matthias at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:211) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:394) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:1) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpression(ModelTranslationContainer.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpressionToString(ModelTranslationContainer.java:89) at de.uni_freiburg.informatik.ultimate.core.lib.results.InvariantResult.getLongDescription(InvariantResult.java:65) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:86) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResultReporter.reportResult(CegarLoopResultReporter.java:141) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.createInvariantResults(TraceAbstractionStarter.java:453) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:192) 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 01:53:00,010 INFO L158 Benchmark]: Toolchain (without parser) took 140573.04ms. Allocated memory was 67.1MB in the beginning and 86.0MB in the end (delta: 18.9MB). Free memory was 48.0MB in the beginning and 29.5MB in the end (delta: 18.5MB). Peak memory consumption was 37.4MB. Max. memory is 16.1GB. [2021-11-21 01:53:00,011 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 67.1MB. Free memory is still 47.6MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 01:53:00,011 INFO L158 Benchmark]: CACSL2BoogieTranslator took 339.58ms. Allocated memory is still 67.1MB. Free memory was 47.7MB in the beginning and 48.6MB in the end (delta: -874.3kB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-21 01:53:00,011 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.77ms. Allocated memory is still 67.1MB. Free memory was 48.6MB in the beginning and 46.9MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 01:53:00,012 INFO L158 Benchmark]: Boogie Preprocessor took 27.44ms. Allocated memory is still 67.1MB. Free memory was 46.9MB in the beginning and 45.6MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 01:53:00,012 INFO L158 Benchmark]: RCFGBuilder took 447.97ms. Allocated memory is still 67.1MB. Free memory was 45.5MB in the beginning and 34.9MB in the end (delta: 10.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-21 01:53:00,012 INFO L158 Benchmark]: TraceAbstraction took 139714.89ms. Allocated memory was 67.1MB in the beginning and 86.0MB in the end (delta: 18.9MB). Free memory was 34.4MB in the beginning and 29.5MB in the end (delta: 4.9MB). Peak memory consumption was 26.1MB. Max. memory is 16.1GB. [2021-11-21 01:53:00,014 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 67.1MB. Free memory is still 47.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 339.58ms. Allocated memory is still 67.1MB. Free memory was 47.7MB in the beginning and 48.6MB in the end (delta: -874.3kB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.77ms. Allocated memory is still 67.1MB. Free memory was 48.6MB in the beginning and 46.9MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 27.44ms. Allocated memory is still 67.1MB. Free memory was 46.9MB in the beginning and 45.6MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 447.97ms. Allocated memory is still 67.1MB. Free memory was 45.5MB in the beginning and 34.9MB in the end (delta: 10.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 139714.89ms. Allocated memory was 67.1MB in the beginning and 86.0MB in the end (delta: 18.9MB). Free memory was 34.4MB in the beginning and 29.5MB in the end (delta: 4.9MB). Peak memory consumption was 26.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 11]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 139.6s, OverallIterations: 6, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 18.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 4.5s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 117 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 113 mSDsluCounter, 879 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 430 IncrementalHoareTripleChecker+Unchecked, 729 mSDsCounter, 35 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 462 IncrementalHoareTripleChecker+Invalid, 927 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 35 mSolverCounterUnsat, 150 mSDtfsCounter, 462 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 579 GetRequests, 425 SyntacticMatches, 13 SemanticMatches, 141 ConstructedPredicates, 12 IntricatePredicates, 0 DeprecatedPredicates, 898 ImplicationChecksByTransitivity, 119.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=47occurred in iteration=4, InterpolantAutomatonStates: 64, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 31 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 19 PreInvPairs, 33 NumberOfFragments, 112 HoareAnnotationTreeSize, 19 FomulaSimplifications, 196 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 1254 FormulaSimplificationTreeSizeReductionInter, 4.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 113.2s InterpolantComputationTime, 284 NumberOfCodeBlocks, 284 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 548 ConstructedInterpolants, 112 QuantifiedInterpolants, 3797 SizeOfPredicates, 103 NumberOfNonLiveVariables, 672 ConjunctsInSsa, 111 ConjunctsInUnsatCore, 20 InterpolantComputations, 8 PerfectInterpolantSequences, 122/160 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 - ExceptionOrErrorResult: UnsupportedOperationException: translation of (const (_ BitVec 32) (Array (_ BitVec 32) (_ BitVec 32))) not yet implemented, please contact Matthias de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: translation of (const (_ BitVec 32) (Array (_ BitVec 32) (_ BitVec 32))) not yet implemented, please contact Matthias: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:211) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-21 01:53:00,096 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafefc04-8421-4677-9819-e6033c9fa1ba/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: ERROR: ExceptionOrErrorResult: UnsupportedOperationException: translation of (const (_ BitVec 32) (Array (_ BitVec 32) (_ BitVec 32))) not yet implemented, please contact Matthias