./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem02_label04.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_ba852fa0-66cf-4651-b486-28c3d9be03f7/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba852fa0-66cf-4651-b486-28c3d9be03f7/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_ba852fa0-66cf-4651-b486-28c3d9be03f7/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba852fa0-66cf-4651-b486-28c3d9be03f7/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem02_label04.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba852fa0-66cf-4651-b486-28c3d9be03f7/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_ba852fa0-66cf-4651-b486-28c3d9be03f7/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 dfc7a2daf16de8ab0ea0e11c62b30033c40981748d5071b1cd9dbc5bcc0c3347 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 01:46:17,232 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 01:46:17,233 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 01:46:17,285 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 01:46:17,285 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 01:46:17,290 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 01:46:17,293 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 01:46:17,297 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 01:46:17,300 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 01:46:17,306 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 01:46:17,307 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 01:46:17,309 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 01:46:17,310 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 01:46:17,313 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 01:46:17,315 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 01:46:17,320 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 01:46:17,322 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 01:46:17,323 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 01:46:17,326 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 01:46:17,334 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 01:46:17,336 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 01:46:17,337 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 01:46:17,341 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 01:46:17,342 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 01:46:17,346 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 01:46:17,346 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 01:46:17,347 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 01:46:17,349 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 01:46:17,350 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 01:46:17,351 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 01:46:17,352 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 01:46:17,353 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 01:46:17,355 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 01:46:17,357 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 01:46:17,358 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 01:46:17,359 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 01:46:17,360 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 01:46:17,360 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 01:46:17,360 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 01:46:17,361 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 01:46:17,362 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 01:46:17,363 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba852fa0-66cf-4651-b486-28c3d9be03f7/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-21 01:46:17,412 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 01:46:17,412 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 01:46:17,413 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 01:46:17,413 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 01:46:17,421 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 01:46:17,421 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 01:46:17,422 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 01:46:17,422 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 01:46:17,422 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 01:46:17,422 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 01:46:17,423 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 01:46:17,424 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 01:46:17,424 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 01:46:17,424 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 01:46:17,424 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 01:46:17,425 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 01:46:17,425 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 01:46:17,425 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 01:46:17,427 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 01:46:17,427 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 01:46:17,427 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 01:46:17,427 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 01:46:17,428 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 01:46:17,428 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 01:46:17,428 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 01:46:17,428 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 01:46:17,430 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 01:46:17,430 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 01:46:17,431 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 01:46:17,431 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 01:46:17,431 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 01:46:17,432 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 01:46:17,432 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:46:17,432 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 01:46:17,433 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 01:46:17,433 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 01:46:17,433 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 01:46:17,433 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 01:46:17,433 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 01:46:17,434 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 01:46:17,434 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 01:46:17,434 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_ba852fa0-66cf-4651-b486-28c3d9be03f7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba852fa0-66cf-4651-b486-28c3d9be03f7/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dfc7a2daf16de8ab0ea0e11c62b30033c40981748d5071b1cd9dbc5bcc0c3347 [2021-11-21 01:46:17,751 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 01:46:17,773 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 01:46:17,775 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 01:46:17,777 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 01:46:17,777 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 01:46:17,779 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba852fa0-66cf-4651-b486-28c3d9be03f7/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/eca-rers2012/Problem02_label04.c [2021-11-21 01:46:17,866 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba852fa0-66cf-4651-b486-28c3d9be03f7/bin/utaipan-TEXQjIfE4P/data/af6d4be8f/18691a43256e405cb50c6d950b2db88e/FLAG015552aff [2021-11-21 01:46:18,462 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 01:46:18,463 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba852fa0-66cf-4651-b486-28c3d9be03f7/sv-benchmarks/c/eca-rers2012/Problem02_label04.c [2021-11-21 01:46:18,477 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba852fa0-66cf-4651-b486-28c3d9be03f7/bin/utaipan-TEXQjIfE4P/data/af6d4be8f/18691a43256e405cb50c6d950b2db88e/FLAG015552aff [2021-11-21 01:46:18,692 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba852fa0-66cf-4651-b486-28c3d9be03f7/bin/utaipan-TEXQjIfE4P/data/af6d4be8f/18691a43256e405cb50c6d950b2db88e [2021-11-21 01:46:18,695 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 01:46:18,697 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 01:46:18,699 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 01:46:18,699 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 01:46:18,703 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 01:46:18,704 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:46:18" (1/1) ... [2021-11-21 01:46:18,705 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26d73638 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:46:18, skipping insertion in model container [2021-11-21 01:46:18,705 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:46:18" (1/1) ... [2021-11-21 01:46:18,713 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 01:46:18,755 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:46:19,109 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_ba852fa0-66cf-4651-b486-28c3d9be03f7/sv-benchmarks/c/eca-rers2012/Problem02_label04.c[17470,17483] [2021-11-21 01:46:19,146 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:46:19,167 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 01:46:19,273 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_ba852fa0-66cf-4651-b486-28c3d9be03f7/sv-benchmarks/c/eca-rers2012/Problem02_label04.c[17470,17483] [2021-11-21 01:46:19,308 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:46:19,323 INFO L208 MainTranslator]: Completed translation [2021-11-21 01:46:19,324 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:46:19 WrapperNode [2021-11-21 01:46:19,324 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 01:46:19,325 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 01:46:19,325 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 01:46:19,326 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 01:46:19,334 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:46:19" (1/1) ... [2021-11-21 01:46:19,353 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:46:19" (1/1) ... [2021-11-21 01:46:19,429 INFO L137 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 668 [2021-11-21 01:46:19,429 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 01:46:19,430 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 01:46:19,430 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 01:46:19,430 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 01:46:19,439 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:46:19" (1/1) ... [2021-11-21 01:46:19,440 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:46:19" (1/1) ... [2021-11-21 01:46:19,444 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:46:19" (1/1) ... [2021-11-21 01:46:19,445 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:46:19" (1/1) ... [2021-11-21 01:46:19,476 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:46:19" (1/1) ... [2021-11-21 01:46:19,506 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:46:19" (1/1) ... [2021-11-21 01:46:19,510 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:46:19" (1/1) ... [2021-11-21 01:46:19,518 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 01:46:19,519 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 01:46:19,519 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 01:46:19,519 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 01:46:19,520 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:46:19" (1/1) ... [2021-11-21 01:46:19,543 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:46:19,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba852fa0-66cf-4651-b486-28c3d9be03f7/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:46:19,575 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba852fa0-66cf-4651-b486-28c3d9be03f7/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 01:46:19,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba852fa0-66cf-4651-b486-28c3d9be03f7/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 01:46:19,635 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 01:46:19,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 01:46:19,635 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 01:46:19,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 01:46:19,756 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 01:46:19,758 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 01:46:20,875 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 01:46:21,166 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 01:46:21,166 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-21 01:46:21,171 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:46:21 BoogieIcfgContainer [2021-11-21 01:46:21,171 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 01:46:21,175 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 01:46:21,175 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 01:46:21,187 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 01:46:21,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:46:18" (1/3) ... [2021-11-21 01:46:21,188 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73a1704b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:46:21, skipping insertion in model container [2021-11-21 01:46:21,189 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:46:19" (2/3) ... [2021-11-21 01:46:21,189 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73a1704b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:46:21, skipping insertion in model container [2021-11-21 01:46:21,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:46:21" (3/3) ... [2021-11-21 01:46:21,191 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem02_label04.c [2021-11-21 01:46:21,197 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 01:46:21,197 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-21 01:46:21,247 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 01:46:21,255 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 01:46:21,255 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-21 01:46:21,272 INFO L276 IsEmpty]: Start isEmpty. Operand has 85 states, 83 states have (on average 1.9518072289156627) internal successors, (162), 84 states have internal predecessors, (162), 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 01:46:21,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-21 01:46:21,282 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:46:21,283 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:46:21,283 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:46:21,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:46:21,289 INFO L85 PathProgramCache]: Analyzing trace with hash 1243323827, now seen corresponding path program 1 times [2021-11-21 01:46:21,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:46:21,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752946383] [2021-11-21 01:46:21,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:46:21,301 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:46:21,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:46:21,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:46:21,619 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:46:21,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752946383] [2021-11-21 01:46:21,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752946383] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:46:21,621 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:46:21,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-21 01:46:21,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9110864] [2021-11-21 01:46:21,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:46:21,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:46:21,629 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:46:21,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:46:21,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:46:21,660 INFO L87 Difference]: Start difference. First operand has 85 states, 83 states have (on average 1.9518072289156627) internal successors, (162), 84 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 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 01:46:22,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:46:22,134 INFO L93 Difference]: Finished difference Result 251 states and 482 transitions. [2021-11-21 01:46:22,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:46:22,137 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-11-21 01:46:22,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:46:22,155 INFO L225 Difference]: With dead ends: 251 [2021-11-21 01:46:22,155 INFO L226 Difference]: Without dead ends: 163 [2021-11-21 01:46:22,158 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:46:22,165 INFO L933 BasicCegarLoop]: 60 mSDtfsCounter, 5 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-21 01:46:22,166 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 65 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-21 01:46:22,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-11-21 01:46:22,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2021-11-21 01:46:22,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 162 states have (on average 1.5617283950617284) internal successors, (253), 162 states have internal predecessors, (253), 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 01:46:22,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 253 transitions. [2021-11-21 01:46:22,250 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 253 transitions. Word has length 80 [2021-11-21 01:46:22,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:46:22,252 INFO L470 AbstractCegarLoop]: Abstraction has 163 states and 253 transitions. [2021-11-21 01:46:22,252 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 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 01:46:22,252 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 253 transitions. [2021-11-21 01:46:22,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-21 01:46:22,256 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:46:22,256 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:46:22,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 01:46:22,257 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:46:22,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:46:22,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1692948104, now seen corresponding path program 1 times [2021-11-21 01:46:22,258 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:46:22,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318228984] [2021-11-21 01:46:22,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:46:22,259 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:46:22,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:46:22,476 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:46:22,477 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:46:22,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318228984] [2021-11-21 01:46:22,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318228984] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:46:22,477 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:46:22,478 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:46:22,478 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083422640] [2021-11-21 01:46:22,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:46:22,479 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:46:22,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:46:22,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:46:22,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:46:22,482 INFO L87 Difference]: Start difference. First operand 163 states and 253 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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 01:46:22,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:46:22,899 INFO L93 Difference]: Finished difference Result 405 states and 661 transitions. [2021-11-21 01:46:22,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:46:22,900 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-11-21 01:46:22,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:46:22,903 INFO L225 Difference]: With dead ends: 405 [2021-11-21 01:46:22,904 INFO L226 Difference]: Without dead ends: 243 [2021-11-21 01:46:22,905 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:46:22,907 INFO L933 BasicCegarLoop]: 126 mSDtfsCounter, 11 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-21 01:46:22,907 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 130 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-21 01:46:22,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2021-11-21 01:46:22,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 243. [2021-11-21 01:46:22,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 242 states have (on average 1.4793388429752066) internal successors, (358), 242 states have internal predecessors, (358), 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 01:46:22,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 358 transitions. [2021-11-21 01:46:22,938 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 358 transitions. Word has length 85 [2021-11-21 01:46:22,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:46:22,939 INFO L470 AbstractCegarLoop]: Abstraction has 243 states and 358 transitions. [2021-11-21 01:46:22,939 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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 01:46:22,939 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 358 transitions. [2021-11-21 01:46:22,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-21 01:46:22,942 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:46:22,943 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:46:22,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-21 01:46:22,943 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:46:22,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:46:22,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1724804465, now seen corresponding path program 1 times [2021-11-21 01:46:22,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:46:22,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912529936] [2021-11-21 01:46:22,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:46:22,945 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:46:22,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:46:23,052 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:46:23,052 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:46:23,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912529936] [2021-11-21 01:46:23,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912529936] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:46:23,053 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:46:23,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-21 01:46:23,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703114184] [2021-11-21 01:46:23,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:46:23,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:46:23,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:46:23,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:46:23,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:46:23,056 INFO L87 Difference]: Start difference. First operand 243 states and 358 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 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 01:46:23,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:46:23,399 INFO L93 Difference]: Finished difference Result 725 states and 1071 transitions. [2021-11-21 01:46:23,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:46:23,400 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-11-21 01:46:23,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:46:23,403 INFO L225 Difference]: With dead ends: 725 [2021-11-21 01:46:23,404 INFO L226 Difference]: Without dead ends: 483 [2021-11-21 01:46:23,405 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:46:23,407 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 106 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:46:23,408 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 28 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-21 01:46:23,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2021-11-21 01:46:23,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 483. [2021-11-21 01:46:23,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 482 states have (on average 1.3983402489626555) internal successors, (674), 482 states have internal predecessors, (674), 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 01:46:23,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 674 transitions. [2021-11-21 01:46:23,433 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 674 transitions. Word has length 95 [2021-11-21 01:46:23,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:46:23,434 INFO L470 AbstractCegarLoop]: Abstraction has 483 states and 674 transitions. [2021-11-21 01:46:23,434 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 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 01:46:23,435 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 674 transitions. [2021-11-21 01:46:23,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-21 01:46:23,440 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:46:23,440 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:46:23,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-21 01:46:23,441 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:46:23,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:46:23,442 INFO L85 PathProgramCache]: Analyzing trace with hash -1929398288, now seen corresponding path program 1 times [2021-11-21 01:46:23,442 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:46:23,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562352474] [2021-11-21 01:46:23,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:46:23,443 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:46:23,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:46:23,568 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:46:23,569 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:46:23,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562352474] [2021-11-21 01:46:23,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562352474] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:46:23,569 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:46:23,570 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:46:23,570 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819268315] [2021-11-21 01:46:23,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:46:23,572 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:46:23,573 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:46:23,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:46:23,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:46:23,574 INFO L87 Difference]: Start difference. First operand 483 states and 674 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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 01:46:23,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:46:23,912 INFO L93 Difference]: Finished difference Result 1445 states and 2019 transitions. [2021-11-21 01:46:23,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:46:23,913 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-11-21 01:46:23,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:46:23,919 INFO L225 Difference]: With dead ends: 1445 [2021-11-21 01:46:23,919 INFO L226 Difference]: Without dead ends: 963 [2021-11-21 01:46:23,921 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:46:23,922 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 7 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:46:23,922 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 168 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-21 01:46:23,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2021-11-21 01:46:23,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 963. [2021-11-21 01:46:23,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 963 states, 962 states have (on average 1.3295218295218296) internal successors, (1279), 962 states have internal predecessors, (1279), 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 01:46:23,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1279 transitions. [2021-11-21 01:46:23,962 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1279 transitions. Word has length 110 [2021-11-21 01:46:23,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:46:23,963 INFO L470 AbstractCegarLoop]: Abstraction has 963 states and 1279 transitions. [2021-11-21 01:46:23,963 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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 01:46:23,963 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1279 transitions. [2021-11-21 01:46:23,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-21 01:46:23,970 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:46:23,971 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:46:23,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-21 01:46:23,971 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:46:23,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:46:23,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1523203554, now seen corresponding path program 1 times [2021-11-21 01:46:23,972 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:46:23,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003556675] [2021-11-21 01:46:23,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:46:23,973 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:46:23,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:46:24,038 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-21 01:46:24,039 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:46:24,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003556675] [2021-11-21 01:46:24,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003556675] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:46:24,039 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:46:24,040 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:46:24,040 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031090601] [2021-11-21 01:46:24,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:46:24,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:46:24,041 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:46:24,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:46:24,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:46:24,042 INFO L87 Difference]: Start difference. First operand 963 states and 1279 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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 01:46:24,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:46:24,411 INFO L93 Difference]: Finished difference Result 2165 states and 2847 transitions. [2021-11-21 01:46:24,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:46:24,412 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2021-11-21 01:46:24,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:46:24,418 INFO L225 Difference]: With dead ends: 2165 [2021-11-21 01:46:24,418 INFO L226 Difference]: Without dead ends: 1043 [2021-11-21 01:46:24,420 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:46:24,421 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 76 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:46:24,422 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 23 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-21 01:46:24,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1043 states. [2021-11-21 01:46:24,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1043 to 963. [2021-11-21 01:46:24,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 963 states, 962 states have (on average 1.20997920997921) internal successors, (1164), 962 states have internal predecessors, (1164), 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 01:46:24,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1164 transitions. [2021-11-21 01:46:24,470 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1164 transitions. Word has length 124 [2021-11-21 01:46:24,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:46:24,471 INFO L470 AbstractCegarLoop]: Abstraction has 963 states and 1164 transitions. [2021-11-21 01:46:24,471 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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 01:46:24,471 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1164 transitions. [2021-11-21 01:46:24,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-21 01:46:24,474 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:46:24,475 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:46:24,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-21 01:46:24,475 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:46:24,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:46:24,476 INFO L85 PathProgramCache]: Analyzing trace with hash 187507048, now seen corresponding path program 1 times [2021-11-21 01:46:24,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:46:24,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411185338] [2021-11-21 01:46:24,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:46:24,476 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:46:24,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:46:24,551 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:46:24,552 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:46:24,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411185338] [2021-11-21 01:46:24,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411185338] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:46:24,552 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:46:24,552 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:46:24,553 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199084007] [2021-11-21 01:46:24,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:46:24,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:46:24,553 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:46:24,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:46:24,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:46:24,554 INFO L87 Difference]: Start difference. First operand 963 states and 1164 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 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 01:46:24,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:46:24,874 INFO L93 Difference]: Finished difference Result 2565 states and 3091 transitions. [2021-11-21 01:46:24,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:46:24,875 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 127 [2021-11-21 01:46:24,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:46:24,885 INFO L225 Difference]: With dead ends: 2565 [2021-11-21 01:46:24,885 INFO L226 Difference]: Without dead ends: 1523 [2021-11-21 01:46:24,887 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:46:24,893 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 21 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:46:24,899 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 29 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-21 01:46:24,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1523 states. [2021-11-21 01:46:24,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1523 to 1363. [2021-11-21 01:46:24,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1363 states, 1362 states have (on average 1.1666666666666667) internal successors, (1589), 1362 states have internal predecessors, (1589), 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 01:46:24,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1363 states to 1363 states and 1589 transitions. [2021-11-21 01:46:24,954 INFO L78 Accepts]: Start accepts. Automaton has 1363 states and 1589 transitions. Word has length 127 [2021-11-21 01:46:24,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:46:24,955 INFO L470 AbstractCegarLoop]: Abstraction has 1363 states and 1589 transitions. [2021-11-21 01:46:24,955 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 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 01:46:24,956 INFO L276 IsEmpty]: Start isEmpty. Operand 1363 states and 1589 transitions. [2021-11-21 01:46:24,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-11-21 01:46:24,959 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:46:24,959 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:46:24,960 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-21 01:46:24,960 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:46:24,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:46:24,963 INFO L85 PathProgramCache]: Analyzing trace with hash 1594129247, now seen corresponding path program 1 times [2021-11-21 01:46:24,963 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:46:24,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705192078] [2021-11-21 01:46:24,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:46:24,964 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:46:25,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:46:25,074 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-21 01:46:25,075 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:46:25,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705192078] [2021-11-21 01:46:25,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705192078] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:46:25,075 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:46:25,075 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-21 01:46:25,076 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138200994] [2021-11-21 01:46:25,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:46:25,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:46:25,077 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:46:25,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:46:25,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:46:25,078 INFO L87 Difference]: Start difference. First operand 1363 states and 1589 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 2 states have internal predecessors, (113), 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 01:46:25,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:46:25,242 INFO L93 Difference]: Finished difference Result 2405 states and 2813 transitions. [2021-11-21 01:46:25,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:46:25,243 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 2 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2021-11-21 01:46:25,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:46:25,249 INFO L225 Difference]: With dead ends: 2405 [2021-11-21 01:46:25,249 INFO L226 Difference]: Without dead ends: 963 [2021-11-21 01:46:25,251 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:46:25,253 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 81 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:46:25,253 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 4 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:46:25,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2021-11-21 01:46:25,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 803. [2021-11-21 01:46:25,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 803 states, 802 states have (on average 1.1371571072319202) internal successors, (912), 802 states have internal predecessors, (912), 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 01:46:25,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 912 transitions. [2021-11-21 01:46:25,280 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 912 transitions. Word has length 139 [2021-11-21 01:46:25,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:46:25,281 INFO L470 AbstractCegarLoop]: Abstraction has 803 states and 912 transitions. [2021-11-21 01:46:25,281 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 2 states have internal predecessors, (113), 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 01:46:25,281 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 912 transitions. [2021-11-21 01:46:25,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-11-21 01:46:25,284 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:46:25,285 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 01:46:25,285 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-21 01:46:25,285 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:46:25,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:46:25,289 INFO L85 PathProgramCache]: Analyzing trace with hash -671312997, now seen corresponding path program 1 times [2021-11-21 01:46:25,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:46:25,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505418740] [2021-11-21 01:46:25,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:46:25,290 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:46:25,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:46:25,533 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 65 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:46:25,533 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:46:25,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505418740] [2021-11-21 01:46:25,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505418740] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:46:25,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1964898306] [2021-11-21 01:46:25,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:46:25,535 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:46:25,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba852fa0-66cf-4651-b486-28c3d9be03f7/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:46:25,537 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba852fa0-66cf-4651-b486-28c3d9be03f7/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:46:25,557 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba852fa0-66cf-4651-b486-28c3d9be03f7/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-21 01:46:25,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:46:25,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-21 01:46:25,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:46:26,173 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-11-21 01:46:26,173 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 01:46:26,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1964898306] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:46:26,174 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-21 01:46:26,174 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2021-11-21 01:46:26,174 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133727270] [2021-11-21 01:46:26,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:46:26,178 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:46:26,178 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:46:26,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:46:26,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-21 01:46:26,180 INFO L87 Difference]: Start difference. First operand 803 states and 912 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:46:26,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:46:26,419 INFO L93 Difference]: Finished difference Result 883 states and 999 transitions. [2021-11-21 01:46:26,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:46:26,420 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 154 [2021-11-21 01:46:26,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:46:26,420 INFO L225 Difference]: With dead ends: 883 [2021-11-21 01:46:26,421 INFO L226 Difference]: Without dead ends: 0 [2021-11-21 01:46:26,422 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-21 01:46:26,422 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 23 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:46:26,423 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 11 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-21 01:46:26,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-21 01:46:26,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-21 01:46:26,423 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 01:46:26,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-21 01:46:26,424 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 154 [2021-11-21 01:46:26,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:46:26,424 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-21 01:46:26,424 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:46:26,424 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-21 01:46:26,424 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-21 01:46:26,427 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-21 01:46:26,468 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba852fa0-66cf-4651-b486-28c3d9be03f7/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-21 01:46:26,641 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba852fa0-66cf-4651-b486-28c3d9be03f7/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:46:26,643 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-21 01:46:26,982 INFO L858 garLoopResultBuilder]: For program point L499-1(lines 39 608) no Hoare annotation was computed. [2021-11-21 01:46:26,982 INFO L858 garLoopResultBuilder]: For program point L301(lines 301 423) no Hoare annotation was computed. [2021-11-21 01:46:26,982 INFO L858 garLoopResultBuilder]: For program point L235(lines 235 423) no Hoare annotation was computed. [2021-11-21 01:46:26,982 INFO L858 garLoopResultBuilder]: For program point L169(lines 169 423) no Hoare annotation was computed. [2021-11-21 01:46:26,982 INFO L858 garLoopResultBuilder]: For program point L500(line 500) no Hoare annotation was computed. [2021-11-21 01:46:26,982 INFO L858 garLoopResultBuilder]: For program point L303(lines 303 423) no Hoare annotation was computed. [2021-11-21 01:46:26,982 INFO L858 garLoopResultBuilder]: For program point L105(lines 105 423) no Hoare annotation was computed. [2021-11-21 01:46:26,982 INFO L858 garLoopResultBuilder]: For program point L40(lines 40 423) no Hoare annotation was computed. [2021-11-21 01:46:26,983 INFO L858 garLoopResultBuilder]: For program point L371(lines 371 423) no Hoare annotation was computed. [2021-11-21 01:46:26,983 INFO L858 garLoopResultBuilder]: For program point L307(lines 307 423) no Hoare annotation was computed. [2021-11-21 01:46:26,983 INFO L858 garLoopResultBuilder]: For program point L175(lines 175 423) no Hoare annotation was computed. [2021-11-21 01:46:26,983 INFO L858 garLoopResultBuilder]: For program point L109(lines 109 423) no Hoare annotation was computed. [2021-11-21 01:46:26,983 INFO L858 garLoopResultBuilder]: For program point L242(lines 242 423) no Hoare annotation was computed. [2021-11-21 01:46:26,983 INFO L858 garLoopResultBuilder]: For program point L45(lines 45 423) no Hoare annotation was computed. [2021-11-21 01:46:26,983 INFO L858 garLoopResultBuilder]: For program point L244(lines 244 423) no Hoare annotation was computed. [2021-11-21 01:46:26,983 INFO L858 garLoopResultBuilder]: For program point L179(lines 179 423) no Hoare annotation was computed. [2021-11-21 01:46:26,983 INFO L858 garLoopResultBuilder]: For program point L378(lines 378 423) no Hoare annotation was computed. [2021-11-21 01:46:26,983 INFO L858 garLoopResultBuilder]: For program point L48(lines 48 423) no Hoare annotation was computed. [2021-11-21 01:46:26,984 INFO L858 garLoopResultBuilder]: For program point L247(lines 247 423) no Hoare annotation was computed. [2021-11-21 01:46:26,984 INFO L858 garLoopResultBuilder]: For program point L116(lines 116 423) no Hoare annotation was computed. [2021-11-21 01:46:26,984 INFO L858 garLoopResultBuilder]: For program point L52(lines 52 423) no Hoare annotation was computed. [2021-11-21 01:46:26,984 INFO L858 garLoopResultBuilder]: For program point L185(lines 185 423) no Hoare annotation was computed. [2021-11-21 01:46:26,984 INFO L858 garLoopResultBuilder]: For program point L385(lines 385 423) no Hoare annotation was computed. [2021-11-21 01:46:26,984 INFO L858 garLoopResultBuilder]: For program point L319(lines 319 423) no Hoare annotation was computed. [2021-11-21 01:46:26,984 INFO L858 garLoopResultBuilder]: For program point L189(lines 189 423) no Hoare annotation was computed. [2021-11-21 01:46:26,984 INFO L858 garLoopResultBuilder]: For program point L123(lines 123 423) no Hoare annotation was computed. [2021-11-21 01:46:26,984 INFO L858 garLoopResultBuilder]: For program point L57(lines 57 423) no Hoare annotation was computed. [2021-11-21 01:46:26,984 INFO L858 garLoopResultBuilder]: For program point L388(lines 388 423) no Hoare annotation was computed. [2021-11-21 01:46:26,984 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-21 01:46:26,985 INFO L858 garLoopResultBuilder]: For program point L390(lines 390 423) no Hoare annotation was computed. [2021-11-21 01:46:26,985 INFO L858 garLoopResultBuilder]: For program point L324(lines 324 423) no Hoare annotation was computed. [2021-11-21 01:46:26,985 INFO L858 garLoopResultBuilder]: For program point L258(lines 258 423) no Hoare annotation was computed. [2021-11-21 01:46:26,985 INFO L858 garLoopResultBuilder]: For program point L60(lines 60 423) no Hoare annotation was computed. [2021-11-21 01:46:26,985 INFO L858 garLoopResultBuilder]: For program point L195(lines 195 423) no Hoare annotation was computed. [2021-11-21 01:46:26,985 INFO L858 garLoopResultBuilder]: For program point L129(lines 129 423) no Hoare annotation was computed. [2021-11-21 01:46:26,985 INFO L858 garLoopResultBuilder]: For program point L64(lines 64 423) no Hoare annotation was computed. [2021-11-21 01:46:26,985 INFO L858 garLoopResultBuilder]: For program point L263(lines 263 423) no Hoare annotation was computed. [2021-11-21 01:46:26,985 INFO L858 garLoopResultBuilder]: For program point L197(lines 197 423) no Hoare annotation was computed. [2021-11-21 01:46:26,986 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 500) no Hoare annotation was computed. [2021-11-21 01:46:26,986 INFO L858 garLoopResultBuilder]: For program point L199(lines 199 423) no Hoare annotation was computed. [2021-11-21 01:46:26,986 INFO L858 garLoopResultBuilder]: For program point L133(lines 133 423) no Hoare annotation was computed. [2021-11-21 01:46:26,986 INFO L858 garLoopResultBuilder]: For program point L399(lines 399 423) no Hoare annotation was computed. [2021-11-21 01:46:26,986 INFO L858 garLoopResultBuilder]: For program point L201(lines 201 423) no Hoare annotation was computed. [2021-11-21 01:46:26,986 INFO L858 garLoopResultBuilder]: For program point L69(lines 69 423) no Hoare annotation was computed. [2021-11-21 01:46:26,986 INFO L858 garLoopResultBuilder]: For program point L269(lines 269 423) no Hoare annotation was computed. [2021-11-21 01:46:26,986 INFO L858 garLoopResultBuilder]: For program point L204(lines 204 423) no Hoare annotation was computed. [2021-11-21 01:46:26,986 INFO L858 garLoopResultBuilder]: For program point L271(lines 271 423) no Hoare annotation was computed. [2021-11-21 01:46:26,987 INFO L858 garLoopResultBuilder]: For program point L404(lines 404 423) no Hoare annotation was computed. [2021-11-21 01:46:26,987 INFO L858 garLoopResultBuilder]: For program point L338(lines 338 423) no Hoare annotation was computed. [2021-11-21 01:46:26,987 INFO L858 garLoopResultBuilder]: For program point L140(lines 140 423) no Hoare annotation was computed. [2021-11-21 01:46:26,987 INFO L858 garLoopResultBuilder]: For program point L75(lines 75 423) no Hoare annotation was computed. [2021-11-21 01:46:26,987 INFO L858 garLoopResultBuilder]: For program point L208(lines 208 423) no Hoare annotation was computed. [2021-11-21 01:46:26,987 INFO L858 garLoopResultBuilder]: For program point L341(lines 341 423) no Hoare annotation was computed. [2021-11-21 01:46:26,987 INFO L858 garLoopResultBuilder]: For program point L408(lines 408 423) no Hoare annotation was computed. [2021-11-21 01:46:26,987 INFO L858 garLoopResultBuilder]: For program point L144(lines 144 423) no Hoare annotation was computed. [2021-11-21 01:46:26,988 INFO L854 garLoopResultBuilder]: At program point L607(lines 39 608) the Hoare annotation is: (let ((.cse3 (<= 10 ~a28~0)) (.cse4 (<= ~a28~0 10)) (.cse2 (<= ~a28~0 7)) (.cse6 (= ~a25~0 1)) (.cse0 (<= 8 ~a17~0)) (.cse1 (<= ~a17~0 8)) (.cse5 (= ~a19~0 1)) (.cse7 (not (= ~a11~0 1)))) (or (and .cse0 .cse1 .cse2) (and .cse3 .cse4 .cse5) (and .cse0 .cse1 .cse4 .cse5) (and .cse3 .cse1 .cse4) (and .cse6 .cse1 .cse4) (and .cse0 .cse1 .cse4 .cse7) (and .cse6 .cse5 .cse7 .cse2) (and .cse6 .cse0 .cse1 .cse5 .cse7))) [2021-11-21 01:46:26,988 INFO L858 garLoopResultBuilder]: For program point L79(lines 79 423) no Hoare annotation was computed. [2021-11-21 01:46:26,988 INFO L858 garLoopResultBuilder]: For program point L212(lines 212 423) no Hoare annotation was computed. [2021-11-21 01:46:26,988 INFO L861 garLoopResultBuilder]: At program point L610(lines 610 627) the Hoare annotation is: true [2021-11-21 01:46:26,988 INFO L858 garLoopResultBuilder]: For program point L412(lines 412 423) no Hoare annotation was computed. [2021-11-21 01:46:26,989 INFO L858 garLoopResultBuilder]: For program point L347(lines 347 423) no Hoare annotation was computed. [2021-11-21 01:46:26,989 INFO L858 garLoopResultBuilder]: For program point L149(lines 149 423) no Hoare annotation was computed. [2021-11-21 01:46:26,989 INFO L858 garLoopResultBuilder]: For program point L414(lines 414 423) no Hoare annotation was computed. [2021-11-21 01:46:26,989 INFO L858 garLoopResultBuilder]: For program point L84(lines 84 423) no Hoare annotation was computed. [2021-11-21 01:46:26,989 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-21 01:46:26,989 INFO L858 garLoopResultBuilder]: For program point L417(lines 417 423) no Hoare annotation was computed. [2021-11-21 01:46:26,989 INFO L858 garLoopResultBuilder]: For program point L153(lines 153 423) no Hoare annotation was computed. [2021-11-21 01:46:26,990 INFO L854 garLoopResultBuilder]: At program point L616-2(lines 616 626) the Hoare annotation is: (let ((.cse3 (<= 10 ~a28~0)) (.cse4 (<= ~a28~0 10)) (.cse2 (<= ~a28~0 7)) (.cse6 (= ~a25~0 1)) (.cse0 (<= 8 ~a17~0)) (.cse1 (<= ~a17~0 8)) (.cse5 (= ~a19~0 1)) (.cse7 (not (= ~a11~0 1)))) (or (and .cse0 .cse1 .cse2) (and .cse3 .cse4 .cse5) (and .cse0 .cse1 .cse4 .cse5) (and .cse3 .cse1 .cse4) (and .cse6 .cse1 .cse4) (and .cse0 .cse1 .cse4 .cse7) (and .cse6 .cse5 .cse7 .cse2) (and .cse6 .cse0 .cse1 .cse5 .cse7))) [2021-11-21 01:46:26,990 INFO L858 garLoopResultBuilder]: For program point L286(lines 286 423) no Hoare annotation was computed. [2021-11-21 01:46:26,990 INFO L858 garLoopResultBuilder]: For program point L419(lines 419 423) no Hoare annotation was computed. [2021-11-21 01:46:26,990 INFO L858 garLoopResultBuilder]: For program point L222(lines 222 423) no Hoare annotation was computed. [2021-11-21 01:46:26,990 INFO L858 garLoopResultBuilder]: For program point L290(lines 290 423) no Hoare annotation was computed. [2021-11-21 01:46:26,990 INFO L858 garLoopResultBuilder]: For program point L158(lines 158 423) no Hoare annotation was computed. [2021-11-21 01:46:26,990 INFO L858 garLoopResultBuilder]: For program point L92(lines 92 423) no Hoare annotation was computed. [2021-11-21 01:46:26,990 INFO L858 garLoopResultBuilder]: For program point L621(line 621) no Hoare annotation was computed. [2021-11-21 01:46:26,990 INFO L858 garLoopResultBuilder]: For program point L225(lines 225 423) no Hoare annotation was computed. [2021-11-21 01:46:26,990 INFO L858 garLoopResultBuilder]: For program point L359(lines 359 423) no Hoare annotation was computed. [2021-11-21 01:46:26,991 INFO L858 garLoopResultBuilder]: For program point L293(lines 293 423) no Hoare annotation was computed. [2021-11-21 01:46:26,991 INFO L858 garLoopResultBuilder]: For program point L228(lines 228 423) no Hoare annotation was computed. [2021-11-21 01:46:26,991 INFO L858 garLoopResultBuilder]: For program point L296(lines 296 423) no Hoare annotation was computed. [2021-11-21 01:46:26,991 INFO L858 garLoopResultBuilder]: For program point L164(lines 164 423) no Hoare annotation was computed. [2021-11-21 01:46:26,991 INFO L858 garLoopResultBuilder]: For program point L496-1(lines 39 608) no Hoare annotation was computed. [2021-11-21 01:46:26,991 INFO L858 garLoopResultBuilder]: For program point L364(lines 364 423) no Hoare annotation was computed. [2021-11-21 01:46:26,991 INFO L858 garLoopResultBuilder]: For program point L233(lines 233 423) no Hoare annotation was computed. [2021-11-21 01:46:26,991 INFO L858 garLoopResultBuilder]: For program point L101(lines 101 423) no Hoare annotation was computed. [2021-11-21 01:46:26,999 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:46:27,001 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-21 01:46:27,045 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 01:46:27 BoogieIcfgContainer [2021-11-21 01:46:27,049 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-21 01:46:27,050 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-21 01:46:27,050 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-21 01:46:27,051 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-21 01:46:27,051 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:46:21" (3/4) ... [2021-11-21 01:46:27,054 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-21 01:46:27,088 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 116 nodes and edges [2021-11-21 01:46:27,090 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2021-11-21 01:46:27,092 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2021-11-21 01:46:27,094 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-21 01:46:27,239 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba852fa0-66cf-4651-b486-28c3d9be03f7/bin/utaipan-TEXQjIfE4P/witness.graphml [2021-11-21 01:46:27,240 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-21 01:46:27,240 INFO L158 Benchmark]: Toolchain (without parser) took 8543.30ms. Allocated memory was 100.7MB in the beginning and 224.4MB in the end (delta: 123.7MB). Free memory was 66.1MB in the beginning and 153.0MB in the end (delta: -86.8MB). Peak memory consumption was 36.4MB. Max. memory is 16.1GB. [2021-11-21 01:46:27,241 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 100.7MB. Free memory is still 57.0MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 01:46:27,241 INFO L158 Benchmark]: CACSL2BoogieTranslator took 625.64ms. Allocated memory was 100.7MB in the beginning and 123.7MB in the end (delta: 23.1MB). Free memory was 65.9MB in the beginning and 82.8MB in the end (delta: -16.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-21 01:46:27,242 INFO L158 Benchmark]: Boogie Procedure Inliner took 104.18ms. Allocated memory is still 123.7MB. Free memory was 82.8MB in the beginning and 77.2MB in the end (delta: 5.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-21 01:46:27,242 INFO L158 Benchmark]: Boogie Preprocessor took 88.37ms. Allocated memory is still 123.7MB. Free memory was 77.2MB in the beginning and 73.0MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-21 01:46:27,243 INFO L158 Benchmark]: RCFGBuilder took 1652.20ms. Allocated memory is still 123.7MB. Free memory was 73.0MB in the beginning and 79.3MB in the end (delta: -6.3MB). Peak memory consumption was 40.9MB. Max. memory is 16.1GB. [2021-11-21 01:46:27,243 INFO L158 Benchmark]: TraceAbstraction took 5874.33ms. Allocated memory was 123.7MB in the beginning and 224.4MB in the end (delta: 100.7MB). Free memory was 79.1MB in the beginning and 167.6MB in the end (delta: -88.5MB). Peak memory consumption was 87.2MB. Max. memory is 16.1GB. [2021-11-21 01:46:27,244 INFO L158 Benchmark]: Witness Printer took 189.77ms. Allocated memory is still 224.4MB. Free memory was 167.6MB in the beginning and 153.0MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-21 01:46:27,247 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 100.7MB. Free memory is still 57.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 625.64ms. Allocated memory was 100.7MB in the beginning and 123.7MB in the end (delta: 23.1MB). Free memory was 65.9MB in the beginning and 82.8MB in the end (delta: -16.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 104.18ms. Allocated memory is still 123.7MB. Free memory was 82.8MB in the beginning and 77.2MB in the end (delta: 5.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 88.37ms. Allocated memory is still 123.7MB. Free memory was 77.2MB in the beginning and 73.0MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1652.20ms. Allocated memory is still 123.7MB. Free memory was 73.0MB in the beginning and 79.3MB in the end (delta: -6.3MB). Peak memory consumption was 40.9MB. Max. memory is 16.1GB. * TraceAbstraction took 5874.33ms. Allocated memory was 123.7MB in the beginning and 224.4MB in the end (delta: 100.7MB). Free memory was 79.1MB in the beginning and 167.6MB in the end (delta: -88.5MB). Peak memory consumption was 87.2MB. Max. memory is 16.1GB. * Witness Printer took 189.77ms. Allocated memory is still 224.4MB. Free memory was 167.6MB in the beginning and 153.0MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. 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: 500]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 5.8s, OverallIterations: 8, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 330 SdHoareTripleChecker+Valid, 2.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 330 mSDsluCounter, 458 SdHoareTripleChecker+Invalid, 1.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 37 mSDsCounter, 471 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1715 IncrementalHoareTripleChecker+Invalid, 2186 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 471 mSolverCounterUnsat, 422 mSDtfsCounter, 1715 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 175 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1363occurred in iteration=6, InterpolantAutomatonStates: 24, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 8 MinimizatonAttempts, 400 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 35 NumberOfFragments, 199 HoareAnnotationTreeSize, 3 FomulaSimplifications, 36 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 3 FomulaSimplificationsInter, 414 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 1068 NumberOfCodeBlocks, 1068 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 1059 ConstructedInterpolants, 0 QuantifiedInterpolants, 4427 SizeOfPredicates, 0 NumberOfNonLiveVariables, 313 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 9 InterpolantComputations, 8 PerfectInterpolantSequences, 394/410 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 616]: Loop Invariant Derived loop invariant: ((((((((8 <= a17 && a17 <= 8) && a28 <= 7) || ((10 <= a28 && a28 <= 10) && a19 == 1)) || (((8 <= a17 && a17 <= 8) && a28 <= 10) && a19 == 1)) || ((10 <= a28 && a17 <= 8) && a28 <= 10)) || ((a25 == 1 && a17 <= 8) && a28 <= 10)) || (((8 <= a17 && a17 <= 8) && a28 <= 10) && !(a11 == 1))) || (((a25 == 1 && a19 == 1) && !(a11 == 1)) && a28 <= 7)) || ((((a25 == 1 && 8 <= a17) && a17 <= 8) && a19 == 1) && !(a11 == 1)) - InvariantResult [Line: 610]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: ((((((((8 <= a17 && a17 <= 8) && a28 <= 7) || ((10 <= a28 && a28 <= 10) && a19 == 1)) || (((8 <= a17 && a17 <= 8) && a28 <= 10) && a19 == 1)) || ((10 <= a28 && a17 <= 8) && a28 <= 10)) || ((a25 == 1 && a17 <= 8) && a28 <= 10)) || (((8 <= a17 && a17 <= 8) && a28 <= 10) && !(a11 == 1))) || (((a25 == 1 && a19 == 1) && !(a11 == 1)) && a28 <= 7)) || ((((a25 == 1 && 8 <= a17) && a17 <= 8) && a19 == 1) && !(a11 == 1)) RESULT: Ultimate proved your program to be correct! [2021-11-21 01:46:27,305 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba852fa0-66cf-4651-b486-28c3d9be03f7/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE