./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label17.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d09b5a89-41a1-424d-b7e0-67e2c64faf2c/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d09b5a89-41a1-424d-b7e0-67e2c64faf2c/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d09b5a89-41a1-424d-b7e0-67e2c64faf2c/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d09b5a89-41a1-424d-b7e0-67e2c64faf2c/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label17.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d09b5a89-41a1-424d-b7e0-67e2c64faf2c/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d09b5a89-41a1-424d-b7e0-67e2c64faf2c/bin/utaipan-aC7eJsxGYH --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 7125651fe28e5ed3820e1570dabb559d66d570950097f9760267ff4877c30610 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:33:17,252 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:33:17,254 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:33:17,306 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:33:17,307 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:33:17,311 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:33:17,313 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:33:17,317 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:33:17,320 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:33:17,325 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:33:17,327 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:33:17,329 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:33:17,330 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:33:17,335 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:33:17,337 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:33:17,338 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:33:17,339 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:33:17,339 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:33:17,341 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:33:17,344 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:33:17,345 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:33:17,347 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:33:17,348 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:33:17,349 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:33:17,353 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:33:17,353 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:33:17,354 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:33:17,355 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:33:17,356 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:33:17,357 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:33:17,357 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:33:17,358 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:33:17,359 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:33:17,360 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:33:17,361 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:33:17,362 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:33:17,363 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:33:17,363 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:33:17,364 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:33:17,365 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:33:17,366 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:33:17,367 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d09b5a89-41a1-424d-b7e0-67e2c64faf2c/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-03 04:33:17,393 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:33:17,393 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:33:17,394 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:33:17,395 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:33:17,395 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:33:17,395 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:33:17,395 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 04:33:17,396 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:33:17,396 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:33:17,396 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 04:33:17,396 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 04:33:17,396 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:33:17,397 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 04:33:17,397 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 04:33:17,397 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 04:33:17,398 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:33:17,398 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 04:33:17,398 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 04:33:17,399 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 04:33:17,399 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:33:17,399 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:33:17,399 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:33:17,400 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:33:17,400 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:33:17,400 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 04:33:17,400 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:33:17,401 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:33:17,401 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:33:17,401 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:33:17,401 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:33:17,402 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:33:17,402 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:33:17,402 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:33:17,402 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:33:17,403 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 04:33:17,403 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 04:33:17,403 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:33:17,403 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:33:17,403 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:33:17,404 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_d09b5a89-41a1-424d-b7e0-67e2c64faf2c/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d09b5a89-41a1-424d-b7e0-67e2c64faf2c/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7125651fe28e5ed3820e1570dabb559d66d570950097f9760267ff4877c30610 [2021-11-03 04:33:17,684 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:33:17,718 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:33:17,722 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:33:17,723 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:33:17,724 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:33:17,725 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d09b5a89-41a1-424d-b7e0-67e2c64faf2c/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/eca-rers2012/Problem01_label17.c [2021-11-03 04:33:17,796 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d09b5a89-41a1-424d-b7e0-67e2c64faf2c/bin/utaipan-aC7eJsxGYH/data/fd38f162a/a4a89bae1d30449eaf779aa458f7505a/FLAG3259a8872 [2021-11-03 04:33:18,403 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:33:18,403 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d09b5a89-41a1-424d-b7e0-67e2c64faf2c/sv-benchmarks/c/eca-rers2012/Problem01_label17.c [2021-11-03 04:33:18,418 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d09b5a89-41a1-424d-b7e0-67e2c64faf2c/bin/utaipan-aC7eJsxGYH/data/fd38f162a/a4a89bae1d30449eaf779aa458f7505a/FLAG3259a8872 [2021-11-03 04:33:18,638 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d09b5a89-41a1-424d-b7e0-67e2c64faf2c/bin/utaipan-aC7eJsxGYH/data/fd38f162a/a4a89bae1d30449eaf779aa458f7505a [2021-11-03 04:33:18,642 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:33:18,643 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:33:18,650 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:33:18,650 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:33:18,654 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:33:18,655 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:33:18" (1/1) ... [2021-11-03 04:33:18,656 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61044d94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:33:18, skipping insertion in model container [2021-11-03 04:33:18,656 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:33:18" (1/1) ... [2021-11-03 04:33:18,664 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:33:18,715 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:33:19,093 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_d09b5a89-41a1-424d-b7e0-67e2c64faf2c/sv-benchmarks/c/eca-rers2012/Problem01_label17.c[19973,19986] [2021-11-03 04:33:19,149 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:33:19,166 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 04:33:19,253 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_d09b5a89-41a1-424d-b7e0-67e2c64faf2c/sv-benchmarks/c/eca-rers2012/Problem01_label17.c[19973,19986] [2021-11-03 04:33:19,264 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:33:19,280 INFO L208 MainTranslator]: Completed translation [2021-11-03 04:33:19,280 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:33:19 WrapperNode [2021-11-03 04:33:19,281 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:33:19,282 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 04:33:19,282 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 04:33:19,282 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 04:33:19,290 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:33:19" (1/1) ... [2021-11-03 04:33:19,328 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:33:19" (1/1) ... [2021-11-03 04:33:19,405 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 04:33:19,411 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 04:33:19,411 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 04:33:19,411 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 04:33:19,421 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:33:19" (1/1) ... [2021-11-03 04:33:19,421 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:33:19" (1/1) ... [2021-11-03 04:33:19,431 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:33:19" (1/1) ... [2021-11-03 04:33:19,431 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:33:19" (1/1) ... [2021-11-03 04:33:19,472 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:33:19" (1/1) ... [2021-11-03 04:33:19,483 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:33:19" (1/1) ... [2021-11-03 04:33:19,488 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:33:19" (1/1) ... [2021-11-03 04:33:19,496 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 04:33:19,497 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 04:33:19,497 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 04:33:19,498 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 04:33:19,499 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:33:19" (1/1) ... [2021-11-03 04:33:19,526 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:33:19,555 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d09b5a89-41a1-424d-b7e0-67e2c64faf2c/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:33:19,572 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d09b5a89-41a1-424d-b7e0-67e2c64faf2c/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 04:33:19,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d09b5a89-41a1-424d-b7e0-67e2c64faf2c/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 04:33:19,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-03 04:33:19,626 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 04:33:19,628 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 04:33:19,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 04:33:21,615 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 04:33:21,616 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-11-03 04:33:21,618 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:33:21 BoogieIcfgContainer [2021-11-03 04:33:21,619 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 04:33:21,639 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 04:33:21,639 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 04:33:21,643 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 04:33:21,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:33:18" (1/3) ... [2021-11-03 04:33:21,644 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a513987 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:33:21, skipping insertion in model container [2021-11-03 04:33:21,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:33:19" (2/3) ... [2021-11-03 04:33:21,645 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a513987 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:33:21, skipping insertion in model container [2021-11-03 04:33:21,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:33:21" (3/3) ... [2021-11-03 04:33:21,647 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label17.c [2021-11-03 04:33:21,654 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 04:33:21,654 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-03 04:33:21,719 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 04:33:21,727 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-03 04:33:21,728 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-03 04:33:21,749 INFO L276 IsEmpty]: Start isEmpty. Operand has 76 states, 74 states have (on average 1.945945945945946) internal successors, (144), 75 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:33:21,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-03 04:33:21,760 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:33:21,761 INFO L513 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] [2021-11-03 04:33:21,761 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:33:21,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:33:21,776 INFO L85 PathProgramCache]: Analyzing trace with hash 379026055, now seen corresponding path program 1 times [2021-11-03 04:33:21,786 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:33:21,787 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942879939] [2021-11-03 04:33:21,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:33:21,788 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:33:21,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:33:22,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:33:22,124 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:33:22,125 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942879939] [2021-11-03 04:33:22,125 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942879939] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:33:22,126 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:33:22,126 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-03 04:33:22,129 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269319836] [2021-11-03 04:33:22,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:33:22,136 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:33:22,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:33:22,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:33:22,157 INFO L87 Difference]: Start difference. First operand has 76 states, 74 states have (on average 1.945945945945946) internal successors, (144), 75 states have internal predecessors, (144), 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 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:33:22,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:33:22,599 INFO L93 Difference]: Finished difference Result 224 states and 428 transitions. [2021-11-03 04:33:22,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:33:22,601 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 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 71 [2021-11-03 04:33:22,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:33:22,612 INFO L225 Difference]: With dead ends: 224 [2021-11-03 04:33:22,612 INFO L226 Difference]: Without dead ends: 145 [2021-11-03 04:33:22,615 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:33:22,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-11-03 04:33:22,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2021-11-03 04:33:22,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 1.7569444444444444) internal successors, (253), 144 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:33:22,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 253 transitions. [2021-11-03 04:33:22,657 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 253 transitions. Word has length 71 [2021-11-03 04:33:22,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:33:22,658 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 253 transitions. [2021-11-03 04:33:22,659 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:33:22,659 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 253 transitions. [2021-11-03 04:33:22,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-03 04:33:22,662 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:33:22,663 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-03 04:33:22,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-03 04:33:22,663 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:33:22,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:33:22,664 INFO L85 PathProgramCache]: Analyzing trace with hash -1189482305, now seen corresponding path program 1 times [2021-11-03 04:33:22,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:33:22,664 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478150361] [2021-11-03 04:33:22,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:33:22,665 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:33:22,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:33:22,837 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-03 04:33:22,837 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:33:22,837 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478150361] [2021-11-03 04:33:22,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478150361] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:33:22,838 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:33:22,838 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-03 04:33:22,838 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860686275] [2021-11-03 04:33:22,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:33:22,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:33:22,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:33:22,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:33:22,841 INFO L87 Difference]: Start difference. First operand 145 states and 253 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 2 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:33:23,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:33:23,211 INFO L93 Difference]: Finished difference Result 431 states and 756 transitions. [2021-11-03 04:33:23,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:33:23,212 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 2 states have internal predecessors, (73), 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 75 [2021-11-03 04:33:23,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:33:23,215 INFO L225 Difference]: With dead ends: 431 [2021-11-03 04:33:23,216 INFO L226 Difference]: Without dead ends: 287 [2021-11-03 04:33:23,217 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:33:23,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2021-11-03 04:33:23,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2021-11-03 04:33:23,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 286 states have (on average 1.632867132867133) internal successors, (467), 286 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:33:23,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 467 transitions. [2021-11-03 04:33:23,252 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 467 transitions. Word has length 75 [2021-11-03 04:33:23,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:33:23,252 INFO L470 AbstractCegarLoop]: Abstraction has 287 states and 467 transitions. [2021-11-03 04:33:23,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 2 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:33:23,253 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 467 transitions. [2021-11-03 04:33:23,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-03 04:33:23,267 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:33:23,268 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:33:23,268 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-03 04:33:23,268 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:33:23,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:33:23,274 INFO L85 PathProgramCache]: Analyzing trace with hash -1933825035, now seen corresponding path program 1 times [2021-11-03 04:33:23,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:33:23,274 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129105424] [2021-11-03 04:33:23,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:33:23,275 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:33:23,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:33:23,447 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-03 04:33:23,448 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:33:23,448 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129105424] [2021-11-03 04:33:23,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129105424] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:33:23,448 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:33:23,449 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-03 04:33:23,449 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880620082] [2021-11-03 04:33:23,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:33:23,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:33:23,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:33:23,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:33:23,451 INFO L87 Difference]: Start difference. First operand 287 states and 467 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 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) [2021-11-03 04:33:23,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:33:23,786 INFO L93 Difference]: Finished difference Result 715 states and 1184 transitions. [2021-11-03 04:33:23,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:33:23,790 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 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 105 [2021-11-03 04:33:23,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:33:23,793 INFO L225 Difference]: With dead ends: 715 [2021-11-03 04:33:23,793 INFO L226 Difference]: Without dead ends: 429 [2021-11-03 04:33:23,795 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:33:23,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2021-11-03 04:33:23,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 358. [2021-11-03 04:33:23,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 357 states have (on average 1.6442577030812324) internal successors, (587), 357 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:33:23,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 587 transitions. [2021-11-03 04:33:23,815 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 587 transitions. Word has length 105 [2021-11-03 04:33:23,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:33:23,815 INFO L470 AbstractCegarLoop]: Abstraction has 358 states and 587 transitions. [2021-11-03 04:33:23,816 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 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) [2021-11-03 04:33:23,816 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 587 transitions. [2021-11-03 04:33:23,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-03 04:33:23,818 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:33:23,818 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-03 04:33:23,818 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-03 04:33:23,819 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:33:23,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:33:23,819 INFO L85 PathProgramCache]: Analyzing trace with hash 218746559, now seen corresponding path program 1 times [2021-11-03 04:33:23,820 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:33:23,820 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934713536] [2021-11-03 04:33:23,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:33:23,820 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:33:23,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:33:23,875 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-03 04:33:23,876 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:33:23,876 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934713536] [2021-11-03 04:33:23,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934713536] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:33:23,876 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:33:23,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-03 04:33:23,877 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881571619] [2021-11-03 04:33:23,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:33:23,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:33:23,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:33:23,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:33:23,879 INFO L87 Difference]: Start difference. First operand 358 states and 587 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:33:24,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:33:24,161 INFO L93 Difference]: Finished difference Result 715 states and 1173 transitions. [2021-11-03 04:33:24,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:33:24,161 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 109 [2021-11-03 04:33:24,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:33:24,164 INFO L225 Difference]: With dead ends: 715 [2021-11-03 04:33:24,164 INFO L226 Difference]: Without dead ends: 358 [2021-11-03 04:33:24,165 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:33:24,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2021-11-03 04:33:24,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 358. [2021-11-03 04:33:24,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 357 states have (on average 1.6274509803921569) internal successors, (581), 357 states have internal predecessors, (581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:33:24,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 581 transitions. [2021-11-03 04:33:24,178 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 581 transitions. Word has length 109 [2021-11-03 04:33:24,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:33:24,178 INFO L470 AbstractCegarLoop]: Abstraction has 358 states and 581 transitions. [2021-11-03 04:33:24,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:33:24,179 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 581 transitions. [2021-11-03 04:33:24,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-03 04:33:24,181 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:33:24,181 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-03 04:33:24,182 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-03 04:33:24,182 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:33:24,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:33:24,183 INFO L85 PathProgramCache]: Analyzing trace with hash 674880247, now seen corresponding path program 1 times [2021-11-03 04:33:24,183 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:33:24,183 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356982726] [2021-11-03 04:33:24,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:33:24,183 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:33:24,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:33:24,244 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-03 04:33:24,244 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:33:24,244 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356982726] [2021-11-03 04:33:24,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356982726] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:33:24,245 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:33:24,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-03 04:33:24,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781529141] [2021-11-03 04:33:24,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:33:24,246 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:33:24,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:33:24,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:33:24,247 INFO L87 Difference]: Start difference. First operand 358 states and 581 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:33:24,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:33:24,572 INFO L93 Difference]: Finished difference Result 857 states and 1369 transitions. [2021-11-03 04:33:24,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:33:24,573 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2021-11-03 04:33:24,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:33:24,577 INFO L225 Difference]: With dead ends: 857 [2021-11-03 04:33:24,577 INFO L226 Difference]: Without dead ends: 500 [2021-11-03 04:33:24,578 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:33:24,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2021-11-03 04:33:24,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 500. [2021-11-03 04:33:24,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 499 states have (on average 1.5210420841683367) internal successors, (759), 499 states have internal predecessors, (759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:33:24,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 759 transitions. [2021-11-03 04:33:24,597 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 759 transitions. Word has length 113 [2021-11-03 04:33:24,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:33:24,597 INFO L470 AbstractCegarLoop]: Abstraction has 500 states and 759 transitions. [2021-11-03 04:33:24,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:33:24,598 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 759 transitions. [2021-11-03 04:33:24,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-03 04:33:24,600 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:33:24,601 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2021-11-03 04:33:24,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-03 04:33:24,601 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:33:24,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:33:24,602 INFO L85 PathProgramCache]: Analyzing trace with hash -692381003, now seen corresponding path program 1 times [2021-11-03 04:33:24,603 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:33:24,603 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017782778] [2021-11-03 04:33:24,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:33:24,603 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:33:24,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:33:24,661 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-11-03 04:33:24,661 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:33:24,661 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017782778] [2021-11-03 04:33:24,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017782778] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:33:24,662 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:33:24,662 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 04:33:24,663 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466149825] [2021-11-03 04:33:24,663 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:33:24,663 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:33:24,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:33:24,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:33:24,665 INFO L87 Difference]: Start difference. First operand 500 states and 759 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:33:25,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:33:25,007 INFO L93 Difference]: Finished difference Result 1354 states and 2016 transitions. [2021-11-03 04:33:25,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:33:25,007 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 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 122 [2021-11-03 04:33:25,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:33:25,013 INFO L225 Difference]: With dead ends: 1354 [2021-11-03 04:33:25,013 INFO L226 Difference]: Without dead ends: 855 [2021-11-03 04:33:25,015 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:33:25,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2021-11-03 04:33:25,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 642. [2021-11-03 04:33:25,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 641 states have (on average 1.4804992199687987) internal successors, (949), 641 states have internal predecessors, (949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:33:25,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 949 transitions. [2021-11-03 04:33:25,037 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 949 transitions. Word has length 122 [2021-11-03 04:33:25,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:33:25,037 INFO L470 AbstractCegarLoop]: Abstraction has 642 states and 949 transitions. [2021-11-03 04:33:25,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:33:25,038 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 949 transitions. [2021-11-03 04:33:25,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-03 04:33:25,040 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:33:25,041 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-03 04:33:25,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-03 04:33:25,041 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:33:25,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:33:25,042 INFO L85 PathProgramCache]: Analyzing trace with hash 240375483, now seen corresponding path program 1 times [2021-11-03 04:33:25,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:33:25,042 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765782397] [2021-11-03 04:33:25,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:33:25,043 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:33:25,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:33:25,099 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-11-03 04:33:25,100 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:33:25,100 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765782397] [2021-11-03 04:33:25,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765782397] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:33:25,101 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:33:25,101 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-03 04:33:25,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482406021] [2021-11-03 04:33:25,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:33:25,102 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:33:25,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:33:25,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:33:25,103 INFO L87 Difference]: Start difference. First operand 642 states and 949 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:33:25,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:33:25,374 INFO L93 Difference]: Finished difference Result 1354 states and 2010 transitions. [2021-11-03 04:33:25,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:33:25,375 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 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 138 [2021-11-03 04:33:25,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:33:25,380 INFO L225 Difference]: With dead ends: 1354 [2021-11-03 04:33:25,380 INFO L226 Difference]: Without dead ends: 713 [2021-11-03 04:33:25,381 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:33:25,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2021-11-03 04:33:25,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 713. [2021-11-03 04:33:25,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 713 states, 712 states have (on average 1.4578651685393258) internal successors, (1038), 712 states have internal predecessors, (1038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:33:25,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 1038 transitions. [2021-11-03 04:33:25,405 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 1038 transitions. Word has length 138 [2021-11-03 04:33:25,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:33:25,405 INFO L470 AbstractCegarLoop]: Abstraction has 713 states and 1038 transitions. [2021-11-03 04:33:25,406 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:33:25,406 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 1038 transitions. [2021-11-03 04:33:25,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-11-03 04:33:25,409 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:33:25,409 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-03 04:33:25,409 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-03 04:33:25,410 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:33:25,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:33:25,411 INFO L85 PathProgramCache]: Analyzing trace with hash 1229086565, now seen corresponding path program 1 times [2021-11-03 04:33:25,411 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:33:25,411 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606271827] [2021-11-03 04:33:25,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:33:25,412 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:33:25,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:33:25,509 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-11-03 04:33:25,509 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:33:25,510 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606271827] [2021-11-03 04:33:25,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606271827] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:33:25,510 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:33:25,510 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 04:33:25,511 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333843112] [2021-11-03 04:33:25,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:33:25,511 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:33:25,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:33:25,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:33:25,513 INFO L87 Difference]: Start difference. First operand 713 states and 1038 transitions. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:33:26,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:33:26,020 INFO L93 Difference]: Finished difference Result 1780 states and 2557 transitions. [2021-11-03 04:33:26,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:33:26,020 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 154 [2021-11-03 04:33:26,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:33:26,027 INFO L225 Difference]: With dead ends: 1780 [2021-11-03 04:33:26,027 INFO L226 Difference]: Without dead ends: 997 [2021-11-03 04:33:26,029 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:33:26,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2021-11-03 04:33:26,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 997. [2021-11-03 04:33:26,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 997 states, 996 states have (on average 1.2359437751004017) internal successors, (1231), 996 states have internal predecessors, (1231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:33:26,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1231 transitions. [2021-11-03 04:33:26,057 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1231 transitions. Word has length 154 [2021-11-03 04:33:26,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:33:26,057 INFO L470 AbstractCegarLoop]: Abstraction has 997 states and 1231 transitions. [2021-11-03 04:33:26,057 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:33:26,058 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1231 transitions. [2021-11-03 04:33:26,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-11-03 04:33:26,061 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:33:26,062 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 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] [2021-11-03 04:33:26,062 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-03 04:33:26,062 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:33:26,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:33:26,063 INFO L85 PathProgramCache]: Analyzing trace with hash -2145597240, now seen corresponding path program 1 times [2021-11-03 04:33:26,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:33:26,063 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561558169] [2021-11-03 04:33:26,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:33:26,063 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:33:26,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:33:26,142 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 130 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-11-03 04:33:26,143 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:33:26,143 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561558169] [2021-11-03 04:33:26,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561558169] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:33:26,143 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:33:26,144 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 04:33:26,144 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610780653] [2021-11-03 04:33:26,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:33:26,144 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:33:26,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:33:26,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:33:26,146 INFO L87 Difference]: Start difference. First operand 997 states and 1231 transitions. Second operand has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:33:26,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:33:26,609 INFO L93 Difference]: Finished difference Result 2206 states and 2715 transitions. [2021-11-03 04:33:26,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:33:26,610 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 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 171 [2021-11-03 04:33:26,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:33:26,617 INFO L225 Difference]: With dead ends: 2206 [2021-11-03 04:33:26,617 INFO L226 Difference]: Without dead ends: 1210 [2021-11-03 04:33:26,626 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:33:26,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2021-11-03 04:33:26,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 997. [2021-11-03 04:33:26,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 997 states, 996 states have (on average 1.1927710843373494) internal successors, (1188), 996 states have internal predecessors, (1188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:33:26,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1188 transitions. [2021-11-03 04:33:26,659 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1188 transitions. Word has length 171 [2021-11-03 04:33:26,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:33:26,660 INFO L470 AbstractCegarLoop]: Abstraction has 997 states and 1188 transitions. [2021-11-03 04:33:26,660 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:33:26,661 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1188 transitions. [2021-11-03 04:33:26,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-11-03 04:33:26,664 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:33:26,665 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:33:26,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-03 04:33:26,665 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:33:26,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:33:26,666 INFO L85 PathProgramCache]: Analyzing trace with hash 1532629065, now seen corresponding path program 1 times [2021-11-03 04:33:26,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:33:26,669 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536529146] [2021-11-03 04:33:26,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:33:26,670 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:33:26,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:33:26,970 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 63 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:33:26,970 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:33:26,970 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536529146] [2021-11-03 04:33:26,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536529146] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 04:33:26,971 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1440497191] [2021-11-03 04:33:26,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:33:26,971 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:33:26,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d09b5a89-41a1-424d-b7e0-67e2c64faf2c/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:33:26,978 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d09b5a89-41a1-424d-b7e0-67e2c64faf2c/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:33:26,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d09b5a89-41a1-424d-b7e0-67e2c64faf2c/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-03 04:33:27,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:33:27,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:33:27,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:33:27,805 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2021-11-03 04:33:27,806 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:33:28,304 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2021-11-03 04:33:28,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1440497191] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:33:28,304 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-11-03 04:33:28,304 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [5] total 6 [2021-11-03 04:33:28,305 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010945870] [2021-11-03 04:33:28,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:33:28,306 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:33:28,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:33:28,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-03 04:33:28,307 INFO L87 Difference]: Start difference. First operand 997 states and 1188 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 2 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:33:28,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:33:28,576 INFO L93 Difference]: Finished difference Result 1709 states and 2015 transitions. [2021-11-03 04:33:28,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:33:28,577 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 2 states have internal predecessors, (75), 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 175 [2021-11-03 04:33:28,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:33:28,587 INFO L225 Difference]: With dead ends: 1709 [2021-11-03 04:33:28,587 INFO L226 Difference]: Without dead ends: 1707 [2021-11-03 04:33:28,588 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 347 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-03 04:33:28,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1707 states. [2021-11-03 04:33:28,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1707 to 1565. [2021-11-03 04:33:28,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1565 states, 1564 states have (on average 1.1796675191815857) internal successors, (1845), 1564 states have internal predecessors, (1845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:33:28,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1565 states to 1565 states and 1845 transitions. [2021-11-03 04:33:28,639 INFO L78 Accepts]: Start accepts. Automaton has 1565 states and 1845 transitions. Word has length 175 [2021-11-03 04:33:28,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:33:28,640 INFO L470 AbstractCegarLoop]: Abstraction has 1565 states and 1845 transitions. [2021-11-03 04:33:28,640 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 2 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:33:28,640 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 1845 transitions. [2021-11-03 04:33:28,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2021-11-03 04:33:28,645 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:33:28,646 INFO L513 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-03 04:33:28,686 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d09b5a89-41a1-424d-b7e0-67e2c64faf2c/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-03 04:33:28,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d09b5a89-41a1-424d-b7e0-67e2c64faf2c/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-03 04:33:28,871 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:33:28,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:33:28,871 INFO L85 PathProgramCache]: Analyzing trace with hash 1287882040, now seen corresponding path program 1 times [2021-11-03 04:33:28,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:33:28,872 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421551783] [2021-11-03 04:33:28,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:33:28,872 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:33:28,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:33:28,969 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2021-11-03 04:33:28,969 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:33:28,969 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421551783] [2021-11-03 04:33:28,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421551783] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:33:28,970 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:33:28,970 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 04:33:28,970 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387009106] [2021-11-03 04:33:28,971 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:33:28,971 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:33:28,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:33:28,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:33:28,972 INFO L87 Difference]: Start difference. First operand 1565 states and 1845 transitions. Second operand has 4 states, 4 states have (on average 23.5) 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) [2021-11-03 04:33:29,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:33:29,409 INFO L93 Difference]: Finished difference Result 3200 states and 3779 transitions. [2021-11-03 04:33:29,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:33:29,410 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) 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 202 [2021-11-03 04:33:29,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:33:29,420 INFO L225 Difference]: With dead ends: 3200 [2021-11-03 04:33:29,420 INFO L226 Difference]: Without dead ends: 1636 [2021-11-03 04:33:29,423 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:33:29,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1636 states. [2021-11-03 04:33:29,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1636 to 1636. [2021-11-03 04:33:29,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1636 states, 1635 states have (on average 1.165137614678899) internal successors, (1905), 1635 states have internal predecessors, (1905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:33:29,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1636 states to 1636 states and 1905 transitions. [2021-11-03 04:33:29,481 INFO L78 Accepts]: Start accepts. Automaton has 1636 states and 1905 transitions. Word has length 202 [2021-11-03 04:33:29,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:33:29,481 INFO L470 AbstractCegarLoop]: Abstraction has 1636 states and 1905 transitions. [2021-11-03 04:33:29,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) 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) [2021-11-03 04:33:29,482 INFO L276 IsEmpty]: Start isEmpty. Operand 1636 states and 1905 transitions. [2021-11-03 04:33:29,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2021-11-03 04:33:29,488 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:33:29,488 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-03 04:33:29,488 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-03 04:33:29,489 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:33:29,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:33:29,489 INFO L85 PathProgramCache]: Analyzing trace with hash 853603705, now seen corresponding path program 1 times [2021-11-03 04:33:29,489 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:33:29,490 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266905302] [2021-11-03 04:33:29,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:33:29,490 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:33:29,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:33:29,593 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 238 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2021-11-03 04:33:29,593 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:33:29,593 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266905302] [2021-11-03 04:33:29,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266905302] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:33:29,596 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:33:29,596 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 04:33:29,598 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027103040] [2021-11-03 04:33:29,599 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:33:29,599 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:33:29,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:33:29,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:33:29,601 INFO L87 Difference]: Start difference. First operand 1636 states and 1905 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:33:29,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:33:29,891 INFO L93 Difference]: Finished difference Result 3555 states and 4142 transitions. [2021-11-03 04:33:29,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:33:29,892 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 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 220 [2021-11-03 04:33:29,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:33:29,903 INFO L225 Difference]: With dead ends: 3555 [2021-11-03 04:33:29,904 INFO L226 Difference]: Without dead ends: 1920 [2021-11-03 04:33:29,906 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:33:29,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1920 states. [2021-11-03 04:33:29,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1920 to 1849. [2021-11-03 04:33:29,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1849 states, 1848 states have (on average 1.1466450216450217) internal successors, (2119), 1848 states have internal predecessors, (2119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:33:29,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1849 states to 1849 states and 2119 transitions. [2021-11-03 04:33:29,964 INFO L78 Accepts]: Start accepts. Automaton has 1849 states and 2119 transitions. Word has length 220 [2021-11-03 04:33:29,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:33:29,965 INFO L470 AbstractCegarLoop]: Abstraction has 1849 states and 2119 transitions. [2021-11-03 04:33:29,965 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:33:29,965 INFO L276 IsEmpty]: Start isEmpty. Operand 1849 states and 2119 transitions. [2021-11-03 04:33:29,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2021-11-03 04:33:29,972 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:33:29,972 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:33:29,972 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-03 04:33:29,973 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:33:29,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:33:29,973 INFO L85 PathProgramCache]: Analyzing trace with hash 2121153666, now seen corresponding path program 1 times [2021-11-03 04:33:29,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:33:29,974 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151574191] [2021-11-03 04:33:29,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:33:29,974 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:33:30,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:33:30,167 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 234 proven. 0 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2021-11-03 04:33:30,167 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:33:30,168 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151574191] [2021-11-03 04:33:30,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151574191] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:33:30,168 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:33:30,168 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 04:33:30,168 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074260369] [2021-11-03 04:33:30,169 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:33:30,169 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:33:30,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:33:30,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:33:30,171 INFO L87 Difference]: Start difference. First operand 1849 states and 2119 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:33:30,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:33:30,453 INFO L93 Difference]: Finished difference Result 3981 states and 4546 transitions. [2021-11-03 04:33:30,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:33:30,454 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 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 242 [2021-11-03 04:33:30,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:33:30,464 INFO L225 Difference]: With dead ends: 3981 [2021-11-03 04:33:30,465 INFO L226 Difference]: Without dead ends: 1849 [2021-11-03 04:33:30,467 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:33:30,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1849 states. [2021-11-03 04:33:30,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1849 to 1210. [2021-11-03 04:33:30,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1210 states, 1209 states have (on average 1.1339950372208436) internal successors, (1371), 1209 states have internal predecessors, (1371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:33:30,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1210 states to 1210 states and 1371 transitions. [2021-11-03 04:33:30,515 INFO L78 Accepts]: Start accepts. Automaton has 1210 states and 1371 transitions. Word has length 242 [2021-11-03 04:33:30,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:33:30,516 INFO L470 AbstractCegarLoop]: Abstraction has 1210 states and 1371 transitions. [2021-11-03 04:33:30,516 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:33:30,517 INFO L276 IsEmpty]: Start isEmpty. Operand 1210 states and 1371 transitions. [2021-11-03 04:33:30,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2021-11-03 04:33:30,522 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:33:30,523 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2021-11-03 04:33:30,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-03 04:33:30,523 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:33:30,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:33:30,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1886816303, now seen corresponding path program 1 times [2021-11-03 04:33:30,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:33:30,524 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732739356] [2021-11-03 04:33:30,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:33:30,525 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:33:30,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:33:30,776 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 182 proven. 103 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2021-11-03 04:33:30,777 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:33:30,777 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732739356] [2021-11-03 04:33:30,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732739356] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 04:33:30,777 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [790536375] [2021-11-03 04:33:30,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:33:30,778 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:33:30,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d09b5a89-41a1-424d-b7e0-67e2c64faf2c/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:33:30,779 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d09b5a89-41a1-424d-b7e0-67e2c64faf2c/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:33:30,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d09b5a89-41a1-424d-b7e0-67e2c64faf2c/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-03 04:33:31,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:33:31,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:33:31,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:33:31,583 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 183 proven. 0 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2021-11-03 04:33:31,583 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:33:32,050 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 183 proven. 0 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2021-11-03 04:33:32,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [790536375] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:33:32,051 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-11-03 04:33:32,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2021-11-03 04:33:32,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683738409] [2021-11-03 04:33:32,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:33:32,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:33:32,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:33:32,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:33:32,056 INFO L87 Difference]: Start difference. First operand 1210 states and 1371 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:33:32,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:33:32,319 INFO L93 Difference]: Finished difference Result 2348 states and 2667 transitions. [2021-11-03 04:33:32,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:33:32,319 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 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 255 [2021-11-03 04:33:32,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:33:32,326 INFO L225 Difference]: With dead ends: 2348 [2021-11-03 04:33:32,327 INFO L226 Difference]: Without dead ends: 1210 [2021-11-03 04:33:32,328 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 513 GetRequests, 508 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:33:32,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2021-11-03 04:33:32,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 1068. [2021-11-03 04:33:32,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1068 states, 1067 states have (on average 1.1246485473289598) internal successors, (1200), 1067 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:33:32,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1200 transitions. [2021-11-03 04:33:32,357 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1200 transitions. Word has length 255 [2021-11-03 04:33:32,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:33:32,358 INFO L470 AbstractCegarLoop]: Abstraction has 1068 states and 1200 transitions. [2021-11-03 04:33:32,358 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:33:32,359 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1200 transitions. [2021-11-03 04:33:32,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2021-11-03 04:33:32,363 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:33:32,364 INFO L513 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2021-11-03 04:33:32,404 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d09b5a89-41a1-424d-b7e0-67e2c64faf2c/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-03 04:33:32,570 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d09b5a89-41a1-424d-b7e0-67e2c64faf2c/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-03 04:33:32,571 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:33:32,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:33:32,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1810003544, now seen corresponding path program 1 times [2021-11-03 04:33:32,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:33:32,571 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660729532] [2021-11-03 04:33:32,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:33:32,572 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:33:32,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:33:32,790 INFO L134 CoverageAnalysis]: Checked inductivity of 479 backedges. 342 proven. 110 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-03 04:33:32,791 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:33:32,791 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660729532] [2021-11-03 04:33:32,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660729532] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 04:33:32,791 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2100745591] [2021-11-03 04:33:32,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:33:32,792 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:33:32,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d09b5a89-41a1-424d-b7e0-67e2c64faf2c/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:33:32,793 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d09b5a89-41a1-424d-b7e0-67e2c64faf2c/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:33:32,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d09b5a89-41a1-424d-b7e0-67e2c64faf2c/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-03 04:33:33,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:33:33,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 572 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:33:33,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:33:33,758 INFO L134 CoverageAnalysis]: Checked inductivity of 479 backedges. 191 proven. 0 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2021-11-03 04:33:33,758 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:33:34,208 INFO L134 CoverageAnalysis]: Checked inductivity of 479 backedges. 191 proven. 0 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2021-11-03 04:33:34,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2100745591] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:33:34,209 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-11-03 04:33:34,210 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 8 [2021-11-03 04:33:34,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990165119] [2021-11-03 04:33:34,211 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:33:34,211 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:33:34,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:33:34,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-03 04:33:34,212 INFO L87 Difference]: Start difference. First operand 1068 states and 1200 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:33:34,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:33:34,481 INFO L93 Difference]: Finished difference Result 2062 states and 2324 transitions. [2021-11-03 04:33:34,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:33:34,482 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 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 263 [2021-11-03 04:33:34,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:33:34,483 INFO L225 Difference]: With dead ends: 2062 [2021-11-03 04:33:34,483 INFO L226 Difference]: Without dead ends: 0 [2021-11-03 04:33:34,487 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 531 GetRequests, 524 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-03 04:33:34,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-03 04:33:34,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-03 04:33:34,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:33:34,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-03 04:33:34,488 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 263 [2021-11-03 04:33:34,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:33:34,489 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-03 04:33:34,489 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:33:34,489 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-03 04:33:34,490 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-03 04:33:34,492 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:33:34,534 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d09b5a89-41a1-424d-b7e0-67e2c64faf2c/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-03 04:33:34,714 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d09b5a89-41a1-424d-b7e0-67e2c64faf2c/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-03 04:33:34,716 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-03 04:33:34,720 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:33:34,796 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:33:34,796 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:33:35,323 INFO L857 garLoopResultBuilder]: For program point L102(lines 102 400) no Hoare annotation was computed. [2021-11-03 04:33:35,323 INFO L857 garLoopResultBuilder]: For program point L598(line 598) no Hoare annotation was computed. [2021-11-03 04:33:35,323 INFO L857 garLoopResultBuilder]: For program point L334(lines 334 400) no Hoare annotation was computed. [2021-11-03 04:33:35,324 INFO L857 garLoopResultBuilder]: For program point L533-1(lines 40 585) no Hoare annotation was computed. [2021-11-03 04:33:35,324 INFO L857 garLoopResultBuilder]: For program point L302(lines 302 400) no Hoare annotation was computed. [2021-11-03 04:33:35,324 INFO L857 garLoopResultBuilder]: For program point L170(lines 170 400) no Hoare annotation was computed. [2021-11-03 04:33:35,324 INFO L857 garLoopResultBuilder]: For program point L534(line 534) no Hoare annotation was computed. [2021-11-03 04:33:35,324 INFO L857 garLoopResultBuilder]: For program point L204(lines 204 400) no Hoare annotation was computed. [2021-11-03 04:33:35,324 INFO L857 garLoopResultBuilder]: For program point L72(lines 72 400) no Hoare annotation was computed. [2021-11-03 04:33:35,324 INFO L857 garLoopResultBuilder]: For program point L271(lines 271 400) no Hoare annotation was computed. [2021-11-03 04:33:35,324 INFO L857 garLoopResultBuilder]: For program point L139(lines 139 400) no Hoare annotation was computed. [2021-11-03 04:33:35,325 INFO L857 garLoopResultBuilder]: For program point L371(lines 371 400) no Hoare annotation was computed. [2021-11-03 04:33:35,325 INFO L857 garLoopResultBuilder]: For program point L107(lines 107 400) no Hoare annotation was computed. [2021-11-03 04:33:35,325 INFO L857 garLoopResultBuilder]: For program point L41(lines 41 400) no Hoare annotation was computed. [2021-11-03 04:33:35,325 INFO L857 garLoopResultBuilder]: For program point L339(lines 339 400) no Hoare annotation was computed. [2021-11-03 04:33:35,325 INFO L857 garLoopResultBuilder]: For program point L207(lines 207 400) no Hoare annotation was computed. [2021-11-03 04:33:35,325 INFO L857 garLoopResultBuilder]: For program point L75(lines 75 400) no Hoare annotation was computed. [2021-11-03 04:33:35,325 INFO L857 garLoopResultBuilder]: For program point L373(lines 373 400) no Hoare annotation was computed. [2021-11-03 04:33:35,326 INFO L857 garLoopResultBuilder]: For program point L241(lines 241 400) no Hoare annotation was computed. [2021-11-03 04:33:35,326 INFO L857 garLoopResultBuilder]: For program point L175(lines 175 400) no Hoare annotation was computed. [2021-11-03 04:33:35,326 INFO L857 garLoopResultBuilder]: For program point L275(lines 275 400) no Hoare annotation was computed. [2021-11-03 04:33:35,326 INFO L857 garLoopResultBuilder]: For program point L375(lines 375 400) no Hoare annotation was computed. [2021-11-03 04:33:35,326 INFO L857 garLoopResultBuilder]: For program point L309(lines 309 400) no Hoare annotation was computed. [2021-11-03 04:33:35,326 INFO L857 garLoopResultBuilder]: For program point L45(lines 45 400) no Hoare annotation was computed. [2021-11-03 04:33:35,326 INFO L857 garLoopResultBuilder]: For program point L343(lines 343 400) no Hoare annotation was computed. [2021-11-03 04:33:35,326 INFO L857 garLoopResultBuilder]: For program point L112(lines 112 400) no Hoare annotation was computed. [2021-11-03 04:33:35,327 INFO L857 garLoopResultBuilder]: For program point L278(lines 278 400) no Hoare annotation was computed. [2021-11-03 04:33:35,327 INFO L857 garLoopResultBuilder]: For program point L146(lines 146 400) no Hoare annotation was computed. [2021-11-03 04:33:35,327 INFO L857 garLoopResultBuilder]: For program point L213(lines 213 400) no Hoare annotation was computed. [2021-11-03 04:33:35,327 INFO L857 garLoopResultBuilder]: For program point L82(lines 82 400) no Hoare annotation was computed. [2021-11-03 04:33:35,327 INFO L857 garLoopResultBuilder]: For program point L347(lines 347 400) no Hoare annotation was computed. [2021-11-03 04:33:35,327 INFO L857 garLoopResultBuilder]: For program point L248(lines 248 400) no Hoare annotation was computed. [2021-11-03 04:33:35,327 INFO L857 garLoopResultBuilder]: For program point L183(lines 183 400) no Hoare annotation was computed. [2021-11-03 04:33:35,328 INFO L857 garLoopResultBuilder]: For program point L150(lines 150 400) no Hoare annotation was computed. [2021-11-03 04:33:35,328 INFO L857 garLoopResultBuilder]: For program point L382(lines 382 400) no Hoare annotation was computed. [2021-11-03 04:33:35,328 INFO L857 garLoopResultBuilder]: For program point L316(lines 316 400) no Hoare annotation was computed. [2021-11-03 04:33:35,328 INFO L857 garLoopResultBuilder]: For program point L283(lines 283 400) no Hoare annotation was computed. [2021-11-03 04:33:35,328 INFO L857 garLoopResultBuilder]: For program point L118(lines 118 400) no Hoare annotation was computed. [2021-11-03 04:33:35,328 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-03 04:33:35,328 INFO L857 garLoopResultBuilder]: For program point L218(lines 218 400) no Hoare annotation was computed. [2021-11-03 04:33:35,329 INFO L857 garLoopResultBuilder]: For program point L53(lines 53 400) no Hoare annotation was computed. [2021-11-03 04:33:35,329 INFO L857 garLoopResultBuilder]: For program point L154(lines 154 400) no Hoare annotation was computed. [2021-11-03 04:33:35,329 INFO L853 garLoopResultBuilder]: At program point L584(lines 40 585) the Hoare annotation is: (let ((.cse9 (= ~a20~0 1))) (let ((.cse3 (<= 15 ~a8~0)) (.cse0 (not .cse9)) (.cse4 (<= ~a8~0 13)) (.cse7 (<= ~a16~0 4)) (.cse5 (<= ~a16~0 5)) (.cse8 (<= ~a17~0 0)) (.cse6 (<= ~a7~0 0)) (.cse1 (= ~a21~0 1)) (.cse2 (= ~a17~0 1))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse4 .cse2 .cse5) (and (<= 6 ~a16~0) .cse1 .cse2 .cse3) (and .cse6 .cse4 .cse1 .cse7) (and .cse8 .cse1 .cse3) (and .cse4 .cse8 .cse9) (and .cse1 .cse2 .cse7 .cse9) (and .cse0 .cse4 .cse1 .cse7) (and .cse8 .cse1 .cse5) (and .cse8 .cse1 .cse9) (and .cse6 .cse1 .cse2 .cse9)))) [2021-11-03 04:33:35,329 INFO L857 garLoopResultBuilder]: For program point L188(lines 188 400) no Hoare annotation was computed. [2021-11-03 04:33:35,330 INFO L857 garLoopResultBuilder]: For program point L387(lines 387 400) no Hoare annotation was computed. [2021-11-03 04:33:35,330 INFO L857 garLoopResultBuilder]: For program point L288(lines 288 400) no Hoare annotation was computed. [2021-11-03 04:33:35,330 INFO L857 garLoopResultBuilder]: For program point L255(lines 255 400) no Hoare annotation was computed. [2021-11-03 04:33:35,330 INFO L857 garLoopResultBuilder]: For program point L90(lines 90 400) no Hoare annotation was computed. [2021-11-03 04:33:35,330 INFO L857 garLoopResultBuilder]: For program point L355(lines 355 400) no Hoare annotation was computed. [2021-11-03 04:33:35,330 INFO L857 garLoopResultBuilder]: For program point L322(lines 322 400) no Hoare annotation was computed. [2021-11-03 04:33:35,330 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-03 04:33:35,331 INFO L857 garLoopResultBuilder]: For program point L124(lines 124 400) no Hoare annotation was computed. [2021-11-03 04:33:35,331 INFO L860 garLoopResultBuilder]: At program point L587(lines 587 604) the Hoare annotation is: true [2021-11-03 04:33:35,331 INFO L857 garLoopResultBuilder]: For program point L224(lines 224 400) no Hoare annotation was computed. [2021-11-03 04:33:35,331 INFO L857 garLoopResultBuilder]: For program point L158(lines 158 400) no Hoare annotation was computed. [2021-11-03 04:33:35,331 INFO L857 garLoopResultBuilder]: For program point L59(lines 59 400) no Hoare annotation was computed. [2021-11-03 04:33:35,331 INFO L857 garLoopResultBuilder]: For program point L94(lines 94 400) no Hoare annotation was computed. [2021-11-03 04:33:35,331 INFO L857 garLoopResultBuilder]: For program point L392(lines 392 400) no Hoare annotation was computed. [2021-11-03 04:33:35,331 INFO L857 garLoopResultBuilder]: For program point L326(lines 326 400) no Hoare annotation was computed. [2021-11-03 04:33:35,331 INFO L857 garLoopResultBuilder]: For program point L260(lines 260 400) no Hoare annotation was computed. [2021-11-03 04:33:35,331 INFO L857 garLoopResultBuilder]: For program point L228(lines 228 400) no Hoare annotation was computed. [2021-11-03 04:33:35,331 INFO L857 garLoopResultBuilder]: For program point L162(lines 162 400) no Hoare annotation was computed. [2021-11-03 04:33:35,332 INFO L857 garLoopResultBuilder]: For program point L129(lines 129 400) no Hoare annotation was computed. [2021-11-03 04:33:35,332 INFO L857 garLoopResultBuilder]: For program point L328(lines 328 400) no Hoare annotation was computed. [2021-11-03 04:33:35,332 INFO L857 garLoopResultBuilder]: For program point L196(lines 196 400) no Hoare annotation was computed. [2021-11-03 04:33:35,332 INFO L857 garLoopResultBuilder]: For program point L64(lines 64 400) no Hoare annotation was computed. [2021-11-03 04:33:35,332 INFO L853 garLoopResultBuilder]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse9 (= ~a20~0 1))) (let ((.cse3 (<= 15 ~a8~0)) (.cse0 (not .cse9)) (.cse4 (<= ~a8~0 13)) (.cse7 (<= ~a16~0 4)) (.cse5 (<= ~a16~0 5)) (.cse8 (<= ~a17~0 0)) (.cse6 (<= ~a7~0 0)) (.cse1 (= ~a21~0 1)) (.cse2 (= ~a17~0 1))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse4 .cse2 .cse5) (and (<= 6 ~a16~0) .cse1 .cse2 .cse3) (and .cse6 .cse4 .cse1 .cse7) (and .cse8 .cse1 .cse3) (and .cse4 .cse8 .cse9) (and .cse1 .cse2 .cse7 .cse9) (and .cse0 .cse4 .cse1 .cse7) (and .cse8 .cse1 .cse5) (and .cse8 .cse1 .cse9) (and .cse6 .cse1 .cse2 .cse9)))) [2021-11-03 04:33:35,332 INFO L857 garLoopResultBuilder]: For program point L296(lines 296 400) no Hoare annotation was computed. [2021-11-03 04:33:35,332 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 534) no Hoare annotation was computed. [2021-11-03 04:33:35,332 INFO L857 garLoopResultBuilder]: For program point L363(lines 363 400) no Hoare annotation was computed. [2021-11-03 04:33:35,333 INFO L857 garLoopResultBuilder]: For program point L199(lines 199 400) no Hoare annotation was computed. [2021-11-03 04:33:35,333 INFO L857 garLoopResultBuilder]: For program point L530-1(lines 40 585) no Hoare annotation was computed. [2021-11-03 04:33:35,333 INFO L857 garLoopResultBuilder]: For program point L365(lines 365 400) no Hoare annotation was computed. [2021-11-03 04:33:35,333 INFO L857 garLoopResultBuilder]: For program point L266(lines 266 400) no Hoare annotation was computed. [2021-11-03 04:33:35,333 INFO L857 garLoopResultBuilder]: For program point L233(lines 233 400) no Hoare annotation was computed. [2021-11-03 04:33:35,333 INFO L857 garLoopResultBuilder]: For program point L134(lines 134 400) no Hoare annotation was computed. [2021-11-03 04:33:35,336 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:33:35,338 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-03 04:33:35,365 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 04:33:35 BoogieIcfgContainer [2021-11-03 04:33:35,366 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-03 04:33:35,366 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-03 04:33:35,366 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-03 04:33:35,367 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-03 04:33:35,367 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:33:21" (3/4) ... [2021-11-03 04:33:35,370 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-03 04:33:35,392 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 108 nodes and edges [2021-11-03 04:33:35,394 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2021-11-03 04:33:35,396 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-11-03 04:33:35,397 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-03 04:33:35,550 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d09b5a89-41a1-424d-b7e0-67e2c64faf2c/bin/utaipan-aC7eJsxGYH/witness.graphml [2021-11-03 04:33:35,551 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-03 04:33:35,552 INFO L168 Benchmark]: Toolchain (without parser) took 16907.95 ms. Allocated memory was 109.1 MB in the beginning and 249.6 MB in the end (delta: 140.5 MB). Free memory was 70.2 MB in the beginning and 199.6 MB in the end (delta: -129.4 MB). Peak memory consumption was 11.2 MB. Max. memory is 16.1 GB. [2021-11-03 04:33:35,553 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 109.1 MB. Free memory is still 88.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:33:35,553 INFO L168 Benchmark]: CACSL2BoogieTranslator took 631.01 ms. Allocated memory is still 109.1 MB. Free memory was 70.0 MB in the beginning and 68.2 MB in the end (delta: 1.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-03 04:33:35,554 INFO L168 Benchmark]: Boogie Procedure Inliner took 128.45 ms. Allocated memory is still 109.1 MB. Free memory was 68.2 MB in the beginning and 62.3 MB in the end (delta: 5.9 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-11-03 04:33:35,554 INFO L168 Benchmark]: Boogie Preprocessor took 85.45 ms. Allocated memory is still 109.1 MB. Free memory was 62.3 MB in the beginning and 58.1 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-11-03 04:33:35,554 INFO L168 Benchmark]: RCFGBuilder took 2121.51 ms. Allocated memory was 109.1 MB in the beginning and 142.6 MB in the end (delta: 33.6 MB). Free memory was 58.1 MB in the beginning and 61.6 MB in the end (delta: -3.5 MB). Peak memory consumption was 35.4 MB. Max. memory is 16.1 GB. [2021-11-03 04:33:35,555 INFO L168 Benchmark]: TraceAbstraction took 13726.60 ms. Allocated memory was 142.6 MB in the beginning and 249.6 MB in the end (delta: 107.0 MB). Free memory was 110.6 MB in the beginning and 214.3 MB in the end (delta: -103.8 MB). Peak memory consumption was 149.9 MB. Max. memory is 16.1 GB. [2021-11-03 04:33:35,555 INFO L168 Benchmark]: Witness Printer took 184.55 ms. Allocated memory is still 249.6 MB. Free memory was 214.3 MB in the beginning and 199.6 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-11-03 04:33:35,557 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 109.1 MB. Free memory is still 88.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 631.01 ms. Allocated memory is still 109.1 MB. Free memory was 70.0 MB in the beginning and 68.2 MB in the end (delta: 1.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 128.45 ms. Allocated memory is still 109.1 MB. Free memory was 68.2 MB in the beginning and 62.3 MB in the end (delta: 5.9 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 85.45 ms. Allocated memory is still 109.1 MB. Free memory was 62.3 MB in the beginning and 58.1 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2121.51 ms. Allocated memory was 109.1 MB in the beginning and 142.6 MB in the end (delta: 33.6 MB). Free memory was 58.1 MB in the beginning and 61.6 MB in the end (delta: -3.5 MB). Peak memory consumption was 35.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 13726.60 ms. Allocated memory was 142.6 MB in the beginning and 249.6 MB in the end (delta: 107.0 MB). Free memory was 110.6 MB in the beginning and 214.3 MB in the end (delta: -103.8 MB). Peak memory consumption was 149.9 MB. Max. memory is 16.1 GB. * Witness Printer took 184.55 ms. Allocated memory is still 249.6 MB. Free memory was 214.3 MB in the beginning and 199.6 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, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 534]: 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, 76 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 13.6s, OverallIterations: 15, TraceHistogramMax: 7, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 5.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.6s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 674 SDtfs, 904 SDslu, 65 SDs, 0 SdLazy, 3405 SolverSat, 842 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1428 GetRequests, 1395 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1849occurred in iteration=12, InterpolantAutomatonStates: 48, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 15 MinimizatonAttempts, 1491 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 45 NumberOfFragments, 263 HoareAnnotationTreeSize, 3 FomulaSimplifications, 3288 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 3 FomulaSimplificationsInter, 298 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 4.6s InterpolantComputationTime, 3108 NumberOfCodeBlocks, 3108 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 3780 ConstructedInterpolants, 0 QuantifiedInterpolants, 13074 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1467 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 21 InterpolantComputations, 18 PerfectInterpolantSequences, 4329/4634 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: 593]: Loop Invariant Derived loop invariant: ((((((((((((!(a20 == 1) && a21 == 1) && a17 == 1) && 15 <= a8) || ((a8 <= 13 && a17 == 1) && a16 <= 5)) || (((6 <= a16 && a21 == 1) && a17 == 1) && 15 <= a8)) || (((a7 <= 0 && a8 <= 13) && a21 == 1) && a16 <= 4)) || ((a17 <= 0 && a21 == 1) && 15 <= a8)) || ((a8 <= 13 && a17 <= 0) && a20 == 1)) || (((a21 == 1 && a17 == 1) && a16 <= 4) && a20 == 1)) || (((!(a20 == 1) && a8 <= 13) && a21 == 1) && a16 <= 4)) || ((a17 <= 0 && a21 == 1) && a16 <= 5)) || ((a17 <= 0 && a21 == 1) && a20 == 1)) || (((a7 <= 0 && a21 == 1) && a17 == 1) && a20 == 1) - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: ((((((((((((!(a20 == 1) && a21 == 1) && a17 == 1) && 15 <= a8) || ((a8 <= 13 && a17 == 1) && a16 <= 5)) || (((6 <= a16 && a21 == 1) && a17 == 1) && 15 <= a8)) || (((a7 <= 0 && a8 <= 13) && a21 == 1) && a16 <= 4)) || ((a17 <= 0 && a21 == 1) && 15 <= a8)) || ((a8 <= 13 && a17 <= 0) && a20 == 1)) || (((a21 == 1 && a17 == 1) && a16 <= 4) && a20 == 1)) || (((!(a20 == 1) && a8 <= 13) && a21 == 1) && a16 <= 4)) || ((a17 <= 0 && a21 == 1) && a16 <= 5)) || ((a17 <= 0 && a21 == 1) && a20 == 1)) || (((a7 <= 0 && a21 == 1) && a17 == 1) && a20 == 1) RESULT: Ultimate proved your program to be correct! [2021-11-03 04:33:35,626 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d09b5a89-41a1-424d-b7e0-67e2c64faf2c/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE