./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem02_label48.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0788a5-bf2b-47b8-a50e-dff5cdbc3d60/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0788a5-bf2b-47b8-a50e-dff5cdbc3d60/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0788a5-bf2b-47b8-a50e-dff5cdbc3d60/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0788a5-bf2b-47b8-a50e-dff5cdbc3d60/bin/utaipan-9zjyvhn0QE/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem02_label48.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0788a5-bf2b-47b8-a50e-dff5cdbc3d60/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0788a5-bf2b-47b8-a50e-dff5cdbc3d60/bin/utaipan-9zjyvhn0QE --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 b90cc16ef5a526e8275add9ef106c37f98806cd4be2a1de7d5feb4a1c25b3ebb ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-24 10:35:56,389 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 10:35:56,391 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 10:35:56,422 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 10:35:56,423 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 10:35:56,424 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 10:35:56,426 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 10:35:56,428 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 10:35:56,430 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 10:35:56,431 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 10:35:56,433 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 10:35:56,434 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 10:35:56,435 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 10:35:56,436 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 10:35:56,437 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 10:35:56,439 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 10:35:56,440 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 10:35:56,441 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 10:35:56,443 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 10:35:56,446 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 10:35:56,448 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 10:35:56,449 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 10:35:56,451 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 10:35:56,452 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 10:35:56,455 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 10:35:56,456 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 10:35:56,456 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 10:35:56,457 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 10:35:56,458 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 10:35:56,459 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 10:35:56,459 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 10:35:56,460 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 10:35:56,461 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 10:35:56,462 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 10:35:56,464 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 10:35:56,464 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 10:35:56,465 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 10:35:56,466 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 10:35:56,466 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 10:35:56,467 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 10:35:56,468 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 10:35:56,472 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0788a5-bf2b-47b8-a50e-dff5cdbc3d60/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-24 10:35:56,515 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 10:35:56,525 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 10:35:56,526 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 10:35:56,526 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 10:35:56,526 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 10:35:56,527 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 10:35:56,527 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-24 10:35:56,527 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 10:35:56,527 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 10:35:56,527 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-24 10:35:56,528 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-24 10:35:56,528 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 10:35:56,528 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-24 10:35:56,528 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-24 10:35:56,528 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-24 10:35:56,529 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 10:35:56,529 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 10:35:56,529 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-24 10:35:56,530 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 10:35:56,530 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 10:35:56,530 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-24 10:35:56,530 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 10:35:56,530 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-24 10:35:56,531 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 10:35:56,531 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 10:35:56,531 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-24 10:35:56,531 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 10:35:56,531 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-24 10:35:56,532 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 10:35:56,532 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 10:35:56,532 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:35:56,532 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 10:35:56,533 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 10:35:56,533 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-24 10:35:56,533 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-24 10:35:56,533 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-24 10:35:56,533 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-24 10:35:56,534 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 10:35:56,534 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 10:35:56,534 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_4d0788a5-bf2b-47b8-a50e-dff5cdbc3d60/bin/utaipan-9zjyvhn0QE/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0788a5-bf2b-47b8-a50e-dff5cdbc3d60/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b90cc16ef5a526e8275add9ef106c37f98806cd4be2a1de7d5feb4a1c25b3ebb [2021-10-24 10:35:56,868 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 10:35:56,888 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 10:35:56,890 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 10:35:56,891 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 10:35:56,892 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 10:35:56,893 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0788a5-bf2b-47b8-a50e-dff5cdbc3d60/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/eca-rers2012/Problem02_label48.c [2021-10-24 10:35:56,957 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0788a5-bf2b-47b8-a50e-dff5cdbc3d60/bin/utaipan-9zjyvhn0QE/data/bc19c64aa/bc62e515e99a4c57bc73c3a181907686/FLAG5dc4e48f3 [2021-10-24 10:35:57,598 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 10:35:57,611 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0788a5-bf2b-47b8-a50e-dff5cdbc3d60/sv-benchmarks/c/eca-rers2012/Problem02_label48.c [2021-10-24 10:35:57,625 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0788a5-bf2b-47b8-a50e-dff5cdbc3d60/bin/utaipan-9zjyvhn0QE/data/bc19c64aa/bc62e515e99a4c57bc73c3a181907686/FLAG5dc4e48f3 [2021-10-24 10:35:57,843 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0788a5-bf2b-47b8-a50e-dff5cdbc3d60/bin/utaipan-9zjyvhn0QE/data/bc19c64aa/bc62e515e99a4c57bc73c3a181907686 [2021-10-24 10:35:57,846 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 10:35:57,848 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 10:35:57,850 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 10:35:57,850 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 10:35:57,861 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 10:35:57,862 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:35:57" (1/1) ... [2021-10-24 10:35:57,864 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ec9f58b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:35:57, skipping insertion in model container [2021-10-24 10:35:57,864 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:35:57" (1/1) ... [2021-10-24 10:35:57,875 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 10:35:57,924 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 10:35:58,298 WARN L228 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_4d0788a5-bf2b-47b8-a50e-dff5cdbc3d60/sv-benchmarks/c/eca-rers2012/Problem02_label48.c[20995,21008] [2021-10-24 10:35:58,313 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:35:58,322 INFO L203 MainTranslator]: Completed pre-run [2021-10-24 10:35:58,459 WARN L228 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_4d0788a5-bf2b-47b8-a50e-dff5cdbc3d60/sv-benchmarks/c/eca-rers2012/Problem02_label48.c[20995,21008] [2021-10-24 10:35:58,465 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:35:58,496 INFO L208 MainTranslator]: Completed translation [2021-10-24 10:35:58,497 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:35:58 WrapperNode [2021-10-24 10:35:58,497 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 10:35:58,498 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-24 10:35:58,498 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-24 10:35:58,499 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-24 10:35:58,506 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:35:58" (1/1) ... [2021-10-24 10:35:58,525 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:35:58" (1/1) ... [2021-10-24 10:35:58,603 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-24 10:35:58,606 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-24 10:35:58,606 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-24 10:35:58,607 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-24 10:35:58,616 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:35:58" (1/1) ... [2021-10-24 10:35:58,616 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:35:58" (1/1) ... [2021-10-24 10:35:58,630 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:35:58" (1/1) ... [2021-10-24 10:35:58,636 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:35:58" (1/1) ... [2021-10-24 10:35:58,668 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:35:58" (1/1) ... [2021-10-24 10:35:58,679 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:35:58" (1/1) ... [2021-10-24 10:35:58,702 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:35:58" (1/1) ... [2021-10-24 10:35:58,711 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-24 10:35:58,711 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-24 10:35:58,712 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-24 10:35:58,712 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-24 10:35:58,716 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:35:58" (1/1) ... [2021-10-24 10:35:58,723 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:35:58,735 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0788a5-bf2b-47b8-a50e-dff5cdbc3d60/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:35:58,751 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0788a5-bf2b-47b8-a50e-dff5cdbc3d60/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-24 10:35:58,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0788a5-bf2b-47b8-a50e-dff5cdbc3d60/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-24 10:35:58,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-24 10:35:58,803 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-24 10:35:58,805 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-24 10:35:58,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-24 10:36:00,914 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-24 10:36:00,915 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-24 10:36:00,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:36:00 BoogieIcfgContainer [2021-10-24 10:36:00,919 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-24 10:36:00,922 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-24 10:36:00,922 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-24 10:36:00,926 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-24 10:36:00,927 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:35:57" (1/3) ... [2021-10-24 10:36:00,928 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@242e6518 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:36:00, skipping insertion in model container [2021-10-24 10:36:00,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:35:58" (2/3) ... [2021-10-24 10:36:00,929 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@242e6518 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:36:00, skipping insertion in model container [2021-10-24 10:36:00,929 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:36:00" (3/3) ... [2021-10-24 10:36:00,931 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem02_label48.c [2021-10-24 10:36:00,939 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-24 10:36:00,940 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-24 10:36:01,000 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-24 10:36:01,009 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 [2021-10-24 10:36:01,009 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-24 10:36:01,026 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) [2021-10-24 10:36:01,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-10-24 10:36:01,036 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:36:01,037 INFO L512 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] [2021-10-24 10:36:01,038 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:36:01,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:36:01,050 INFO L82 PathProgramCache]: Analyzing trace with hash 1814585879, now seen corresponding path program 1 times [2021-10-24 10:36:01,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:36:01,064 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334983140] [2021-10-24 10:36:01,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:36:01,065 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:36:01,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:36:01,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:36:01,556 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:36:01,557 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334983140] [2021-10-24 10:36:01,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334983140] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 10:36:01,558 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:36:01,558 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-24 10:36:01,561 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126290103] [2021-10-24 10:36:01,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 10:36:01,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:36:01,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 10:36:01,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:36:01,586 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) [2021-10-24 10:36:02,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:36:02,078 INFO L93 Difference]: Finished difference Result 251 states and 482 transitions. [2021-10-24 10:36:02,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 10:36:02,080 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 [2021-10-24 10:36:02,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:36:02,098 INFO L225 Difference]: With dead ends: 251 [2021-10-24 10:36:02,099 INFO L226 Difference]: Without dead ends: 163 [2021-10-24 10:36:02,103 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:36:02,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-10-24 10:36:02,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2021-10-24 10:36:02,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 162 states have (on average 1.808641975308642) internal successors, (293), 162 states have internal predecessors, (293), 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) [2021-10-24 10:36:02,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 293 transitions. [2021-10-24 10:36:02,181 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 293 transitions. Word has length 80 [2021-10-24 10:36:02,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:36:02,182 INFO L470 AbstractCegarLoop]: Abstraction has 163 states and 293 transitions. [2021-10-24 10:36:02,182 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) [2021-10-24 10:36:02,182 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 293 transitions. [2021-10-24 10:36:02,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-10-24 10:36:02,186 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:36:02,187 INFO L512 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:36:02,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-24 10:36:02,187 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:36:02,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:36:02,188 INFO L82 PathProgramCache]: Analyzing trace with hash -1153870570, now seen corresponding path program 1 times [2021-10-24 10:36:02,188 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:36:02,189 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623147678] [2021-10-24 10:36:02,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:36:02,189 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:36:02,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:36:02,298 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:36:02,299 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:36:02,299 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623147678] [2021-10-24 10:36:02,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623147678] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 10:36:02,299 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:36:02,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-24 10:36:02,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680265581] [2021-10-24 10:36:02,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 10:36:02,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:36:02,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 10:36:02,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:36:02,302 INFO L87 Difference]: Start difference. First operand 163 states and 293 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 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) [2021-10-24 10:36:02,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:36:02,735 INFO L93 Difference]: Finished difference Result 485 states and 876 transitions. [2021-10-24 10:36:02,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 10:36:02,736 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 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 88 [2021-10-24 10:36:02,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:36:02,738 INFO L225 Difference]: With dead ends: 485 [2021-10-24 10:36:02,739 INFO L226 Difference]: Without dead ends: 323 [2021-10-24 10:36:02,740 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:36:02,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2021-10-24 10:36:02,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2021-10-24 10:36:02,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 322 states have (on average 1.5) internal successors, (483), 322 states have internal predecessors, (483), 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) [2021-10-24 10:36:02,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 483 transitions. [2021-10-24 10:36:02,758 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 483 transitions. Word has length 88 [2021-10-24 10:36:02,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:36:02,759 INFO L470 AbstractCegarLoop]: Abstraction has 323 states and 483 transitions. [2021-10-24 10:36:02,759 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 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) [2021-10-24 10:36:02,760 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 483 transitions. [2021-10-24 10:36:02,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-10-24 10:36:02,765 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:36:02,765 INFO L512 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1] [2021-10-24 10:36:02,765 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-24 10:36:02,766 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:36:02,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:36:02,767 INFO L82 PathProgramCache]: Analyzing trace with hash -1787468796, now seen corresponding path program 1 times [2021-10-24 10:36:02,767 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:36:02,767 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280880623] [2021-10-24 10:36:02,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:36:02,768 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:36:02,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:36:02,867 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:36:02,867 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:36:02,868 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280880623] [2021-10-24 10:36:02,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280880623] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 10:36:02,868 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:36:02,868 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-24 10:36:02,869 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886600879] [2021-10-24 10:36:02,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 10:36:02,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:36:02,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 10:36:02,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:36:02,871 INFO L87 Difference]: Start difference. First operand 323 states and 483 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 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) [2021-10-24 10:36:03,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:36:03,221 INFO L93 Difference]: Finished difference Result 965 states and 1446 transitions. [2021-10-24 10:36:03,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 10:36:03,222 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 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 89 [2021-10-24 10:36:03,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:36:03,232 INFO L225 Difference]: With dead ends: 965 [2021-10-24 10:36:03,232 INFO L226 Difference]: Without dead ends: 643 [2021-10-24 10:36:03,238 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:36:03,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2021-10-24 10:36:03,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 563. [2021-10-24 10:36:03,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 562 states have (on average 1.4555160142348755) internal successors, (818), 562 states have internal predecessors, (818), 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) [2021-10-24 10:36:03,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 818 transitions. [2021-10-24 10:36:03,267 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 818 transitions. Word has length 89 [2021-10-24 10:36:03,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:36:03,268 INFO L470 AbstractCegarLoop]: Abstraction has 563 states and 818 transitions. [2021-10-24 10:36:03,268 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 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) [2021-10-24 10:36:03,268 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 818 transitions. [2021-10-24 10:36:03,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-10-24 10:36:03,275 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:36:03,275 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:36:03,275 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-24 10:36:03,276 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:36:03,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:36:03,276 INFO L82 PathProgramCache]: Analyzing trace with hash -699169223, now seen corresponding path program 1 times [2021-10-24 10:36:03,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:36:03,277 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675459298] [2021-10-24 10:36:03,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:36:03,277 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:36:03,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:36:03,378 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-10-24 10:36:03,378 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:36:03,378 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675459298] [2021-10-24 10:36:03,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675459298] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-24 10:36:03,379 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1024599066] [2021-10-24 10:36:03,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:36:03,379 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:36:03,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0788a5-bf2b-47b8-a50e-dff5cdbc3d60/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:36:03,387 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0788a5-bf2b-47b8-a50e-dff5cdbc3d60/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 10:36:03,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0788a5-bf2b-47b8-a50e-dff5cdbc3d60/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-24 10:36:03,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:36:03,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-24 10:36:03,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:36:03,945 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-10-24 10:36:03,946 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:36:04,206 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-10-24 10:36:04,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1024599066] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:36:04,208 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-24 10:36:04,208 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [3] total 4 [2021-10-24 10:36:04,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745356939] [2021-10-24 10:36:04,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 10:36:04,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:36:04,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 10:36:04,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-24 10:36:04,213 INFO L87 Difference]: Start difference. First operand 563 states and 818 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) [2021-10-24 10:36:04,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:36:04,568 INFO L93 Difference]: Finished difference Result 1445 states and 2106 transitions. [2021-10-24 10:36:04,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 10:36:04,568 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 93 [2021-10-24 10:36:04,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:36:04,574 INFO L225 Difference]: With dead ends: 1445 [2021-10-24 10:36:04,574 INFO L226 Difference]: Without dead ends: 883 [2021-10-24 10:36:04,576 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 183 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.9ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-24 10:36:04,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 883 states. [2021-10-24 10:36:04,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 883 to 883. [2021-10-24 10:36:04,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 883 states, 882 states have (on average 1.4036281179138321) internal successors, (1238), 882 states have internal predecessors, (1238), 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) [2021-10-24 10:36:04,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 1238 transitions. [2021-10-24 10:36:04,601 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 1238 transitions. Word has length 93 [2021-10-24 10:36:04,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:36:04,602 INFO L470 AbstractCegarLoop]: Abstraction has 883 states and 1238 transitions. [2021-10-24 10:36:04,602 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) [2021-10-24 10:36:04,602 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 1238 transitions. [2021-10-24 10:36:04,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-10-24 10:36:04,606 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:36:04,606 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1, 1] [2021-10-24 10:36:04,645 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0788a5-bf2b-47b8-a50e-dff5cdbc3d60/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-10-24 10:36:04,821 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0788a5-bf2b-47b8-a50e-dff5cdbc3d60/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:36:04,822 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:36:04,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:36:04,822 INFO L82 PathProgramCache]: Analyzing trace with hash 703496694, now seen corresponding path program 1 times [2021-10-24 10:36:04,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:36:04,823 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980390131] [2021-10-24 10:36:04,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:36:04,823 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:36:04,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:36:04,867 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-24 10:36:04,867 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:36:04,867 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980390131] [2021-10-24 10:36:04,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980390131] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 10:36:04,868 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:36:04,868 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-24 10:36:04,868 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212579707] [2021-10-24 10:36:04,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 10:36:04,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:36:04,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 10:36:04,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:36:04,870 INFO L87 Difference]: Start difference. First operand 883 states and 1238 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 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) [2021-10-24 10:36:05,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:36:05,191 INFO L93 Difference]: Finished difference Result 2485 states and 3526 transitions. [2021-10-24 10:36:05,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 10:36:05,192 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 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 [2021-10-24 10:36:05,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:36:05,200 INFO L225 Difference]: With dead ends: 2485 [2021-10-24 10:36:05,200 INFO L226 Difference]: Without dead ends: 1523 [2021-10-24 10:36:05,202 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:36:05,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1523 states. [2021-10-24 10:36:05,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1523 to 1523. [2021-10-24 10:36:05,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1523 states, 1522 states have (on average 1.3508541392904074) internal successors, (2056), 1522 states have internal predecessors, (2056), 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) [2021-10-24 10:36:05,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1523 states to 1523 states and 2056 transitions. [2021-10-24 10:36:05,241 INFO L78 Accepts]: Start accepts. Automaton has 1523 states and 2056 transitions. Word has length 95 [2021-10-24 10:36:05,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:36:05,241 INFO L470 AbstractCegarLoop]: Abstraction has 1523 states and 2056 transitions. [2021-10-24 10:36:05,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 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) [2021-10-24 10:36:05,242 INFO L276 IsEmpty]: Start isEmpty. Operand 1523 states and 2056 transitions. [2021-10-24 10:36:05,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-10-24 10:36:05,245 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:36:05,246 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 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] [2021-10-24 10:36:05,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-24 10:36:05,246 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:36:05,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:36:05,247 INFO L82 PathProgramCache]: Analyzing trace with hash 1651162926, now seen corresponding path program 1 times [2021-10-24 10:36:05,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:36:05,247 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278915988] [2021-10-24 10:36:05,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:36:05,248 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:36:05,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:36:05,340 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-10-24 10:36:05,341 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:36:05,341 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278915988] [2021-10-24 10:36:05,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278915988] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 10:36:05,341 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:36:05,341 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-24 10:36:05,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567458989] [2021-10-24 10:36:05,342 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 10:36:05,342 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:36:05,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 10:36:05,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:36:05,343 INFO L87 Difference]: Start difference. First operand 1523 states and 2056 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 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) [2021-10-24 10:36:05,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:36:05,713 INFO L93 Difference]: Finished difference Result 3445 states and 4738 transitions. [2021-10-24 10:36:05,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 10:36:05,714 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 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 97 [2021-10-24 10:36:05,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:36:05,725 INFO L225 Difference]: With dead ends: 3445 [2021-10-24 10:36:05,725 INFO L226 Difference]: Without dead ends: 1923 [2021-10-24 10:36:05,728 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:36:05,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1923 states. [2021-10-24 10:36:05,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1923 to 1843. [2021-10-24 10:36:05,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1843 states, 1842 states have (on average 1.3170466883821932) internal successors, (2426), 1842 states have internal predecessors, (2426), 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) [2021-10-24 10:36:05,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1843 states to 1843 states and 2426 transitions. [2021-10-24 10:36:05,778 INFO L78 Accepts]: Start accepts. Automaton has 1843 states and 2426 transitions. Word has length 97 [2021-10-24 10:36:05,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:36:05,779 INFO L470 AbstractCegarLoop]: Abstraction has 1843 states and 2426 transitions. [2021-10-24 10:36:05,779 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 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) [2021-10-24 10:36:05,779 INFO L276 IsEmpty]: Start isEmpty. Operand 1843 states and 2426 transitions. [2021-10-24 10:36:05,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-10-24 10:36:05,783 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:36:05,784 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 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] [2021-10-24 10:36:05,784 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-24 10:36:05,784 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:36:05,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:36:05,785 INFO L82 PathProgramCache]: Analyzing trace with hash -1610326536, now seen corresponding path program 1 times [2021-10-24 10:36:05,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:36:05,785 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984999143] [2021-10-24 10:36:05,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:36:05,786 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:36:05,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:36:05,824 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-10-24 10:36:05,824 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:36:05,825 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984999143] [2021-10-24 10:36:05,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984999143] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 10:36:05,825 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:36:05,825 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-24 10:36:05,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871572661] [2021-10-24 10:36:05,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 10:36:05,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:36:05,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 10:36:05,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:36:05,827 INFO L87 Difference]: Start difference. First operand 1843 states and 2426 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 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) [2021-10-24 10:36:06,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:36:06,144 INFO L93 Difference]: Finished difference Result 4005 states and 5241 transitions. [2021-10-24 10:36:06,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 10:36:06,145 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 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 101 [2021-10-24 10:36:06,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:36:06,156 INFO L225 Difference]: With dead ends: 4005 [2021-10-24 10:36:06,156 INFO L226 Difference]: Without dead ends: 2163 [2021-10-24 10:36:06,159 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:36:06,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2163 states. [2021-10-24 10:36:06,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2163 to 2163. [2021-10-24 10:36:06,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2163 states, 2162 states have (on average 1.2770582793709528) internal successors, (2761), 2162 states have internal predecessors, (2761), 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) [2021-10-24 10:36:06,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2163 states to 2163 states and 2761 transitions. [2021-10-24 10:36:06,215 INFO L78 Accepts]: Start accepts. Automaton has 2163 states and 2761 transitions. Word has length 101 [2021-10-24 10:36:06,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:36:06,216 INFO L470 AbstractCegarLoop]: Abstraction has 2163 states and 2761 transitions. [2021-10-24 10:36:06,216 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 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) [2021-10-24 10:36:06,216 INFO L276 IsEmpty]: Start isEmpty. Operand 2163 states and 2761 transitions. [2021-10-24 10:36:06,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-10-24 10:36:06,221 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:36:06,221 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2021-10-24 10:36:06,222 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-24 10:36:06,222 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:36:06,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:36:06,223 INFO L82 PathProgramCache]: Analyzing trace with hash -985380189, now seen corresponding path program 1 times [2021-10-24 10:36:06,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:36:06,223 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340484822] [2021-10-24 10:36:06,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:36:06,224 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:36:06,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:36:06,392 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 18 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:36:06,392 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:36:06,393 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340484822] [2021-10-24 10:36:06,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340484822] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-24 10:36:06,393 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1527983097] [2021-10-24 10:36:06,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:36:06,394 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:36:06,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0788a5-bf2b-47b8-a50e-dff5cdbc3d60/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:36:06,395 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0788a5-bf2b-47b8-a50e-dff5cdbc3d60/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 10:36:06,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0788a5-bf2b-47b8-a50e-dff5cdbc3d60/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-24 10:36:06,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:36:06,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-24 10:36:06,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:36:06,944 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-10-24 10:36:06,945 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:36:07,235 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-10-24 10:36:07,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1527983097] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:36:07,236 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-24 10:36:07,236 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2021-10-24 10:36:07,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082633895] [2021-10-24 10:36:07,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 10:36:07,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:36:07,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 10:36:07,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-24 10:36:07,239 INFO L87 Difference]: Start difference. First operand 2163 states and 2761 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 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) [2021-10-24 10:36:07,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:36:07,599 INFO L93 Difference]: Finished difference Result 4885 states and 6228 transitions. [2021-10-24 10:36:07,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 10:36:07,600 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 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 107 [2021-10-24 10:36:07,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:36:07,611 INFO L225 Difference]: With dead ends: 4885 [2021-10-24 10:36:07,611 INFO L226 Difference]: Without dead ends: 2003 [2021-10-24 10:36:07,614 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 211 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 24.6ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-24 10:36:07,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2003 states. [2021-10-24 10:36:07,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2003 to 2003. [2021-10-24 10:36:07,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2003 states, 2002 states have (on average 1.2282717282717284) internal successors, (2459), 2002 states have internal predecessors, (2459), 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) [2021-10-24 10:36:07,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2003 states to 2003 states and 2459 transitions. [2021-10-24 10:36:07,710 INFO L78 Accepts]: Start accepts. Automaton has 2003 states and 2459 transitions. Word has length 107 [2021-10-24 10:36:07,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:36:07,710 INFO L470 AbstractCegarLoop]: Abstraction has 2003 states and 2459 transitions. [2021-10-24 10:36:07,711 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 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) [2021-10-24 10:36:07,711 INFO L276 IsEmpty]: Start isEmpty. Operand 2003 states and 2459 transitions. [2021-10-24 10:36:07,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-10-24 10:36:07,715 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:36:07,716 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 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, 1, 1, 1, 1, 1] [2021-10-24 10:36:07,758 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0788a5-bf2b-47b8-a50e-dff5cdbc3d60/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-24 10:36:07,941 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0788a5-bf2b-47b8-a50e-dff5cdbc3d60/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-10-24 10:36:07,942 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:36:07,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:36:07,942 INFO L82 PathProgramCache]: Analyzing trace with hash 1426751113, now seen corresponding path program 1 times [2021-10-24 10:36:07,943 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:36:07,943 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343576212] [2021-10-24 10:36:07,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:36:07,943 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:36:07,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:36:08,016 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-24 10:36:08,016 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:36:08,017 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343576212] [2021-10-24 10:36:08,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343576212] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 10:36:08,017 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:36:08,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-24 10:36:08,018 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634916856] [2021-10-24 10:36:08,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 10:36:08,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:36:08,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 10:36:08,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:36:08,020 INFO L87 Difference]: Start difference. First operand 2003 states and 2459 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) [2021-10-24 10:36:08,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:36:08,306 INFO L93 Difference]: Finished difference Result 3923 states and 4831 transitions. [2021-10-24 10:36:08,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 10:36:08,307 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 114 [2021-10-24 10:36:08,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:36:08,308 INFO L225 Difference]: With dead ends: 3923 [2021-10-24 10:36:08,308 INFO L226 Difference]: Without dead ends: 0 [2021-10-24 10:36:08,312 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:36:08,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-24 10:36:08,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-24 10:36:08,312 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) [2021-10-24 10:36:08,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-24 10:36:08,313 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 114 [2021-10-24 10:36:08,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:36:08,313 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-24 10:36:08,313 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) [2021-10-24 10:36:08,313 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-24 10:36:08,314 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-24 10:36:08,316 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 10:36:08,317 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-24 10:36:08,319 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-24 10:36:08,324 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:36:08,360 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:36:08,363 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:36:08,508 INFO L857 garLoopResultBuilder]: For program point L301(lines 301 423) no Hoare annotation was computed. [2021-10-24 10:36:08,513 INFO L857 garLoopResultBuilder]: For program point L235(lines 235 423) no Hoare annotation was computed. [2021-10-24 10:36:08,513 INFO L857 garLoopResultBuilder]: For program point L169(lines 169 423) no Hoare annotation was computed. [2021-10-24 10:36:08,513 INFO L857 garLoopResultBuilder]: For program point L303(lines 303 423) no Hoare annotation was computed. [2021-10-24 10:36:08,513 INFO L857 garLoopResultBuilder]: For program point L105(lines 105 423) no Hoare annotation was computed. [2021-10-24 10:36:08,514 INFO L857 garLoopResultBuilder]: For program point L40(lines 40 423) no Hoare annotation was computed. [2021-10-24 10:36:08,514 INFO L857 garLoopResultBuilder]: For program point L371(lines 371 423) no Hoare annotation was computed. [2021-10-24 10:36:08,514 INFO L857 garLoopResultBuilder]: For program point L307(lines 307 423) no Hoare annotation was computed. [2021-10-24 10:36:08,514 INFO L857 garLoopResultBuilder]: For program point L175(lines 175 423) no Hoare annotation was computed. [2021-10-24 10:36:08,514 INFO L857 garLoopResultBuilder]: For program point L109(lines 109 423) no Hoare annotation was computed. [2021-10-24 10:36:08,514 INFO L857 garLoopResultBuilder]: For program point L242(lines 242 423) no Hoare annotation was computed. [2021-10-24 10:36:08,515 INFO L857 garLoopResultBuilder]: For program point L45(lines 45 423) no Hoare annotation was computed. [2021-10-24 10:36:08,515 INFO L857 garLoopResultBuilder]: For program point L244(lines 244 423) no Hoare annotation was computed. [2021-10-24 10:36:08,515 INFO L857 garLoopResultBuilder]: For program point L179(lines 179 423) no Hoare annotation was computed. [2021-10-24 10:36:08,515 INFO L857 garLoopResultBuilder]: For program point L378(lines 378 423) no Hoare annotation was computed. [2021-10-24 10:36:08,515 INFO L857 garLoopResultBuilder]: For program point L48(lines 48 423) no Hoare annotation was computed. [2021-10-24 10:36:08,516 INFO L857 garLoopResultBuilder]: For program point L247(lines 247 423) no Hoare annotation was computed. [2021-10-24 10:36:08,516 INFO L857 garLoopResultBuilder]: For program point L116(lines 116 423) no Hoare annotation was computed. [2021-10-24 10:36:08,516 INFO L857 garLoopResultBuilder]: For program point L52(lines 52 423) no Hoare annotation was computed. [2021-10-24 10:36:08,516 INFO L857 garLoopResultBuilder]: For program point L185(lines 185 423) no Hoare annotation was computed. [2021-10-24 10:36:08,517 INFO L857 garLoopResultBuilder]: For program point L385(lines 385 423) no Hoare annotation was computed. [2021-10-24 10:36:08,517 INFO L857 garLoopResultBuilder]: For program point L319(lines 319 423) no Hoare annotation was computed. [2021-10-24 10:36:08,518 INFO L857 garLoopResultBuilder]: For program point L189(lines 189 423) no Hoare annotation was computed. [2021-10-24 10:36:08,518 INFO L857 garLoopResultBuilder]: For program point L123(lines 123 423) no Hoare annotation was computed. [2021-10-24 10:36:08,518 INFO L857 garLoopResultBuilder]: For program point L57(lines 57 423) no Hoare annotation was computed. [2021-10-24 10:36:08,518 INFO L857 garLoopResultBuilder]: For program point L388(lines 388 423) no Hoare annotation was computed. [2021-10-24 10:36:08,518 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-24 10:36:08,518 INFO L857 garLoopResultBuilder]: For program point L390(lines 390 423) no Hoare annotation was computed. [2021-10-24 10:36:08,518 INFO L857 garLoopResultBuilder]: For program point L324(lines 324 423) no Hoare annotation was computed. [2021-10-24 10:36:08,519 INFO L857 garLoopResultBuilder]: For program point L258(lines 258 423) no Hoare annotation was computed. [2021-10-24 10:36:08,519 INFO L857 garLoopResultBuilder]: For program point L60(lines 60 423) no Hoare annotation was computed. [2021-10-24 10:36:08,519 INFO L857 garLoopResultBuilder]: For program point L589-1(lines 39 608) no Hoare annotation was computed. [2021-10-24 10:36:08,519 INFO L857 garLoopResultBuilder]: For program point L195(lines 195 423) no Hoare annotation was computed. [2021-10-24 10:36:08,519 INFO L857 garLoopResultBuilder]: For program point L129(lines 129 423) no Hoare annotation was computed. [2021-10-24 10:36:08,520 INFO L857 garLoopResultBuilder]: For program point L592-1(lines 39 608) no Hoare annotation was computed. [2021-10-24 10:36:08,520 INFO L857 garLoopResultBuilder]: For program point L64(lines 64 423) no Hoare annotation was computed. [2021-10-24 10:36:08,521 INFO L857 garLoopResultBuilder]: For program point L593(line 593) no Hoare annotation was computed. [2021-10-24 10:36:08,521 INFO L857 garLoopResultBuilder]: For program point L263(lines 263 423) no Hoare annotation was computed. [2021-10-24 10:36:08,521 INFO L857 garLoopResultBuilder]: For program point L197(lines 197 423) no Hoare annotation was computed. [2021-10-24 10:36:08,521 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 593) no Hoare annotation was computed. [2021-10-24 10:36:08,521 INFO L857 garLoopResultBuilder]: For program point L199(lines 199 423) no Hoare annotation was computed. [2021-10-24 10:36:08,521 INFO L857 garLoopResultBuilder]: For program point L133(lines 133 423) no Hoare annotation was computed. [2021-10-24 10:36:08,522 INFO L857 garLoopResultBuilder]: For program point L399(lines 399 423) no Hoare annotation was computed. [2021-10-24 10:36:08,522 INFO L857 garLoopResultBuilder]: For program point L201(lines 201 423) no Hoare annotation was computed. [2021-10-24 10:36:08,522 INFO L857 garLoopResultBuilder]: For program point L69(lines 69 423) no Hoare annotation was computed. [2021-10-24 10:36:08,522 INFO L857 garLoopResultBuilder]: For program point L269(lines 269 423) no Hoare annotation was computed. [2021-10-24 10:36:08,522 INFO L857 garLoopResultBuilder]: For program point L204(lines 204 423) no Hoare annotation was computed. [2021-10-24 10:36:08,522 INFO L857 garLoopResultBuilder]: For program point L271(lines 271 423) no Hoare annotation was computed. [2021-10-24 10:36:08,523 INFO L857 garLoopResultBuilder]: For program point L404(lines 404 423) no Hoare annotation was computed. [2021-10-24 10:36:08,523 INFO L857 garLoopResultBuilder]: For program point L338(lines 338 423) no Hoare annotation was computed. [2021-10-24 10:36:08,523 INFO L857 garLoopResultBuilder]: For program point L140(lines 140 423) no Hoare annotation was computed. [2021-10-24 10:36:08,523 INFO L857 garLoopResultBuilder]: For program point L75(lines 75 423) no Hoare annotation was computed. [2021-10-24 10:36:08,523 INFO L857 garLoopResultBuilder]: For program point L208(lines 208 423) no Hoare annotation was computed. [2021-10-24 10:36:08,524 INFO L857 garLoopResultBuilder]: For program point L341(lines 341 423) no Hoare annotation was computed. [2021-10-24 10:36:08,524 INFO L857 garLoopResultBuilder]: For program point L408(lines 408 423) no Hoare annotation was computed. [2021-10-24 10:36:08,524 INFO L857 garLoopResultBuilder]: For program point L144(lines 144 423) no Hoare annotation was computed. [2021-10-24 10:36:08,525 INFO L853 garLoopResultBuilder]: At program point L607(lines 39 608) the Hoare annotation is: (let ((.cse1 (<= ~a17~0 7)) (.cse4 (= ~a25~0 1)) (.cse3 (= ~a19~0 1)) (.cse0 (= ~a25~0 ~a11~0)) (.cse2 (<= ~a11~0 0))) (or (and .cse0 .cse1) (and .cse2 .cse3) (and .cse1 (not .cse4)) (<= ~a28~0 10) (and .cse4 .cse3) (and .cse0 .cse2))) [2021-10-24 10:36:08,525 INFO L857 garLoopResultBuilder]: For program point L79(lines 79 423) no Hoare annotation was computed. [2021-10-24 10:36:08,525 INFO L857 garLoopResultBuilder]: For program point L212(lines 212 423) no Hoare annotation was computed. [2021-10-24 10:36:08,525 INFO L860 garLoopResultBuilder]: At program point L610(lines 610 627) the Hoare annotation is: true [2021-10-24 10:36:08,525 INFO L857 garLoopResultBuilder]: For program point L412(lines 412 423) no Hoare annotation was computed. [2021-10-24 10:36:08,526 INFO L857 garLoopResultBuilder]: For program point L347(lines 347 423) no Hoare annotation was computed. [2021-10-24 10:36:08,526 INFO L857 garLoopResultBuilder]: For program point L149(lines 149 423) no Hoare annotation was computed. [2021-10-24 10:36:08,526 INFO L857 garLoopResultBuilder]: For program point L414(lines 414 423) no Hoare annotation was computed. [2021-10-24 10:36:08,526 INFO L857 garLoopResultBuilder]: For program point L84(lines 84 423) no Hoare annotation was computed. [2021-10-24 10:36:08,526 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-24 10:36:08,527 INFO L857 garLoopResultBuilder]: For program point L417(lines 417 423) no Hoare annotation was computed. [2021-10-24 10:36:08,527 INFO L857 garLoopResultBuilder]: For program point L153(lines 153 423) no Hoare annotation was computed. [2021-10-24 10:36:08,530 INFO L853 garLoopResultBuilder]: At program point L616-2(lines 616 626) the Hoare annotation is: (let ((.cse1 (<= ~a17~0 7)) (.cse4 (= ~a25~0 1)) (.cse3 (= ~a19~0 1)) (.cse0 (= ~a25~0 ~a11~0)) (.cse2 (<= ~a11~0 0))) (or (and .cse0 .cse1) (and .cse2 .cse3) (and .cse1 (not .cse4)) (<= ~a28~0 10) (and .cse4 .cse3) (and .cse0 .cse2))) [2021-10-24 10:36:08,531 INFO L857 garLoopResultBuilder]: For program point L286(lines 286 423) no Hoare annotation was computed. [2021-10-24 10:36:08,531 INFO L857 garLoopResultBuilder]: For program point L419(lines 419 423) no Hoare annotation was computed. [2021-10-24 10:36:08,531 INFO L857 garLoopResultBuilder]: For program point L222(lines 222 423) no Hoare annotation was computed. [2021-10-24 10:36:08,531 INFO L857 garLoopResultBuilder]: For program point L290(lines 290 423) no Hoare annotation was computed. [2021-10-24 10:36:08,531 INFO L857 garLoopResultBuilder]: For program point L158(lines 158 423) no Hoare annotation was computed. [2021-10-24 10:36:08,531 INFO L857 garLoopResultBuilder]: For program point L92(lines 92 423) no Hoare annotation was computed. [2021-10-24 10:36:08,532 INFO L857 garLoopResultBuilder]: For program point L621(line 621) no Hoare annotation was computed. [2021-10-24 10:36:08,532 INFO L857 garLoopResultBuilder]: For program point L225(lines 225 423) no Hoare annotation was computed. [2021-10-24 10:36:08,532 INFO L857 garLoopResultBuilder]: For program point L359(lines 359 423) no Hoare annotation was computed. [2021-10-24 10:36:08,532 INFO L857 garLoopResultBuilder]: For program point L293(lines 293 423) no Hoare annotation was computed. [2021-10-24 10:36:08,532 INFO L857 garLoopResultBuilder]: For program point L228(lines 228 423) no Hoare annotation was computed. [2021-10-24 10:36:08,532 INFO L857 garLoopResultBuilder]: For program point L296(lines 296 423) no Hoare annotation was computed. [2021-10-24 10:36:08,533 INFO L857 garLoopResultBuilder]: For program point L164(lines 164 423) no Hoare annotation was computed. [2021-10-24 10:36:08,533 INFO L857 garLoopResultBuilder]: For program point L364(lines 364 423) no Hoare annotation was computed. [2021-10-24 10:36:08,533 INFO L857 garLoopResultBuilder]: For program point L233(lines 233 423) no Hoare annotation was computed. [2021-10-24 10:36:08,533 INFO L857 garLoopResultBuilder]: For program point L101(lines 101 423) no Hoare annotation was computed. [2021-10-24 10:36:08,537 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-24 10:36:08,557 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:36:08 BoogieIcfgContainer [2021-10-24 10:36:08,557 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-24 10:36:08,558 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-24 10:36:08,558 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-24 10:36:08,558 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-24 10:36:08,559 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:36:00" (3/4) ... [2021-10-24 10:36:08,561 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-24 10:36:08,593 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 114 nodes and edges [2021-10-24 10:36:08,595 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2021-10-24 10:36:08,596 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-24 10:36:08,598 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-24 10:36:08,721 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0788a5-bf2b-47b8-a50e-dff5cdbc3d60/bin/utaipan-9zjyvhn0QE/witness.graphml [2021-10-24 10:36:08,721 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-24 10:36:08,723 INFO L168 Benchmark]: Toolchain (without parser) took 10874.24 ms. Allocated memory was 109.1 MB in the beginning and 234.9 MB in the end (delta: 125.8 MB). Free memory was 63.1 MB in the beginning and 112.0 MB in the end (delta: -48.9 MB). Peak memory consumption was 77.2 MB. Max. memory is 16.1 GB. [2021-10-24 10:36:08,723 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 109.1 MB. Free memory was 81.4 MB in the beginning and 81.3 MB in the end (delta: 67.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:36:08,723 INFO L168 Benchmark]: CACSL2BoogieTranslator took 648.04 ms. Allocated memory is still 109.1 MB. Free memory was 62.9 MB in the beginning and 68.0 MB in the end (delta: -5.1 MB). Peak memory consumption was 9.0 MB. Max. memory is 16.1 GB. [2021-10-24 10:36:08,724 INFO L168 Benchmark]: Boogie Procedure Inliner took 106.69 ms. Allocated memory is still 109.1 MB. Free memory was 68.0 MB in the beginning and 62.5 MB in the end (delta: 5.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-24 10:36:08,724 INFO L168 Benchmark]: Boogie Preprocessor took 104.92 ms. Allocated memory is still 109.1 MB. Free memory was 62.5 MB in the beginning and 58.2 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-24 10:36:08,725 INFO L168 Benchmark]: RCFGBuilder took 2207.33 ms. Allocated memory was 109.1 MB in the beginning and 136.3 MB in the end (delta: 27.3 MB). Free memory was 58.2 MB in the beginning and 57.5 MB in the end (delta: 668.3 kB). Peak memory consumption was 32.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:36:08,725 INFO L168 Benchmark]: TraceAbstraction took 7635.16 ms. Allocated memory was 136.3 MB in the beginning and 234.9 MB in the end (delta: 98.6 MB). Free memory was 56.6 MB in the beginning and 126.7 MB in the end (delta: -70.1 MB). Peak memory consumption was 28.3 MB. Max. memory is 16.1 GB. [2021-10-24 10:36:08,725 INFO L168 Benchmark]: Witness Printer took 163.34 ms. Allocated memory is still 234.9 MB. Free memory was 126.7 MB in the beginning and 112.0 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-24 10:36:08,727 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 109.1 MB. Free memory was 81.4 MB in the beginning and 81.3 MB in the end (delta: 67.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 648.04 ms. Allocated memory is still 109.1 MB. Free memory was 62.9 MB in the beginning and 68.0 MB in the end (delta: -5.1 MB). Peak memory consumption was 9.0 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 106.69 ms. Allocated memory is still 109.1 MB. Free memory was 68.0 MB in the beginning and 62.5 MB in the end (delta: 5.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 104.92 ms. Allocated memory is still 109.1 MB. Free memory was 62.5 MB in the beginning and 58.2 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2207.33 ms. Allocated memory was 109.1 MB in the beginning and 136.3 MB in the end (delta: 27.3 MB). Free memory was 58.2 MB in the beginning and 57.5 MB in the end (delta: 668.3 kB). Peak memory consumption was 32.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 7635.16 ms. Allocated memory was 136.3 MB in the beginning and 234.9 MB in the end (delta: 98.6 MB). Free memory was 56.6 MB in the beginning and 126.7 MB in the end (delta: -70.1 MB). Peak memory consumption was 28.3 MB. Max. memory is 16.1 GB. * Witness Printer took 163.34 ms. Allocated memory is still 234.9 MB. Free memory was 126.7 MB in the beginning and 112.0 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 593]: 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: 7539.1ms, OverallIterations: 9, TraceHistogramMax: 4, EmptinessCheckTime: 49.9ms, AutomataDifference: 3427.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 190.7ms, InitialAbstractionConstructionTime: 12.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 787 SDtfs, 490 SDslu, 44 SDs, 0 SdLazy, 2141 SolverSat, 541 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2265.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 421 GetRequests, 405 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 56.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=2163occurred in iteration=7, InterpolantAutomatonStates: 27, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 377.1ms AutomataMinimizationTime, 9 MinimizatonAttempts, 160 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 73 NumberOfFragments, 81 HoareAnnotationTreeSize, 3 FomulaSimplifications, 788 FormulaSimplificationTreeSizeReduction, 56.0ms HoareSimplificationTime, 3 FomulaSimplificationsInter, 118 FormulaSimplificationTreeSizeReductionInter, 126.4ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 117.9ms SsaConstructionTime, 423.3ms SatisfiabilityAnalysisTime, 2106.9ms InterpolantComputationTime, 1064 NumberOfCodeBlocks, 1064 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 1251 ConstructedInterpolants, 0 QuantifiedInterpolants, 4274 SizeOfPredicates, 0 NumberOfNonLiveVariables, 588 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 13 InterpolantComputations, 11 PerfectInterpolantSequences, 266/290 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: (((((a25 == a11 && a17 <= 7) || (a11 <= 0 && a19 == 1)) || (a17 <= 7 && !(a25 == 1))) || a28 <= 10) || (a25 == 1 && a19 == 1)) || (a25 == a11 && a11 <= 0) - InvariantResult [Line: 610]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: (((((a25 == a11 && a17 <= 7) || (a11 <= 0 && a19 == 1)) || (a17 <= 7 && !(a25 == 1))) || a28 <= 10) || (a25 == 1 && a19 == 1)) || (a25 == a11 && a11 <= 0) RESULT: Ultimate proved your program to be correct! [2021-10-24 10:36:08,781 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0788a5-bf2b-47b8-a50e-dff5cdbc3d60/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...