./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2018/Problem11.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_3591be3e-2fba-4136-8a4c-e2a3193fb7fb/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3591be3e-2fba-4136-8a4c-e2a3193fb7fb/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_3591be3e-2fba-4136-8a4c-e2a3193fb7fb/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3591be3e-2fba-4136-8a4c-e2a3193fb7fb/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2018/Problem11.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3591be3e-2fba-4136-8a4c-e2a3193fb7fb/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_3591be3e-2fba-4136-8a4c-e2a3193fb7fb/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 940624650400628fbc547d76c7cce642a9063fb1576962b71733623b165f113e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:44:36,159 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:44:36,161 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:44:36,209 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:44:36,210 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:44:36,215 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:44:36,217 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:44:36,220 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:44:36,223 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:44:36,231 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:44:36,232 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:44:36,234 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:44:36,234 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:44:36,237 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:44:36,240 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:44:36,249 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:44:36,251 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:44:36,252 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:44:36,255 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:44:36,262 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:44:36,264 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:44:36,266 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:44:36,269 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:44:36,270 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:44:36,278 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:44:36,279 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:44:36,279 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:44:36,282 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:44:36,282 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:44:36,284 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:44:36,285 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:44:36,286 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:44:36,288 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:44:36,289 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:44:36,291 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:44:36,291 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:44:36,292 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:44:36,292 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:44:36,293 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:44:36,294 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:44:36,294 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:44:36,296 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3591be3e-2fba-4136-8a4c-e2a3193fb7fb/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-03 04:44:36,352 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:44:36,352 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:44:36,353 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:44:36,354 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:44:36,354 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:44:36,354 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:44:36,354 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 04:44:36,355 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:44:36,355 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:44:36,355 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 04:44:36,362 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 04:44:36,362 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:44:36,363 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 04:44:36,363 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 04:44:36,363 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 04:44:36,364 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:44:36,364 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 04:44:36,364 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 04:44:36,365 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 04:44:36,365 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:44:36,365 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:44:36,365 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:44:36,366 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:44:36,366 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:44:36,366 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 04:44:36,366 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:44:36,366 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:44:36,367 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:44:36,367 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:44:36,369 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:44:36,369 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:44:36,370 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:44:36,370 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:44:36,370 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:44:36,370 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 04:44:36,371 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 04:44:36,371 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:44:36,371 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:44:36,371 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:44:36,371 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_3591be3e-2fba-4136-8a4c-e2a3193fb7fb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3591be3e-2fba-4136-8a4c-e2a3193fb7fb/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 940624650400628fbc547d76c7cce642a9063fb1576962b71733623b165f113e [2021-11-03 04:44:36,637 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:44:36,658 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:44:36,661 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:44:36,662 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:44:36,663 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:44:36,664 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3591be3e-2fba-4136-8a4c-e2a3193fb7fb/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/eca-rers2018/Problem11.c [2021-11-03 04:44:36,732 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3591be3e-2fba-4136-8a4c-e2a3193fb7fb/bin/utaipan-aC7eJsxGYH/data/e5db6ec52/3b15a70710bb4f77b76c48070f945dd3/FLAG81c12e2bb [2021-11-03 04:44:37,440 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:44:37,441 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3591be3e-2fba-4136-8a4c-e2a3193fb7fb/sv-benchmarks/c/eca-rers2018/Problem11.c [2021-11-03 04:44:37,469 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3591be3e-2fba-4136-8a4c-e2a3193fb7fb/bin/utaipan-aC7eJsxGYH/data/e5db6ec52/3b15a70710bb4f77b76c48070f945dd3/FLAG81c12e2bb [2021-11-03 04:44:37,577 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3591be3e-2fba-4136-8a4c-e2a3193fb7fb/bin/utaipan-aC7eJsxGYH/data/e5db6ec52/3b15a70710bb4f77b76c48070f945dd3 [2021-11-03 04:44:37,581 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:44:37,583 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:44:37,585 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:44:37,585 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:44:37,589 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:44:37,591 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:44:37" (1/1) ... [2021-11-03 04:44:37,593 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c8c65f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:44:37, skipping insertion in model container [2021-11-03 04:44:37,593 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:44:37" (1/1) ... [2021-11-03 04:44:37,601 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:44:37,714 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:44:37,886 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_3591be3e-2fba-4136-8a4c-e2a3193fb7fb/sv-benchmarks/c/eca-rers2018/Problem11.c[778,791] [2021-11-03 04:44:37,893 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_3591be3e-2fba-4136-8a4c-e2a3193fb7fb/sv-benchmarks/c/eca-rers2018/Problem11.c[817,830] [2021-11-03 04:44:38,863 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:44:38,881 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 04:44:38,894 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_3591be3e-2fba-4136-8a4c-e2a3193fb7fb/sv-benchmarks/c/eca-rers2018/Problem11.c[778,791] [2021-11-03 04:44:38,895 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_3591be3e-2fba-4136-8a4c-e2a3193fb7fb/sv-benchmarks/c/eca-rers2018/Problem11.c[817,830] [2021-11-03 04:44:39,107 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:44:39,274 INFO L208 MainTranslator]: Completed translation [2021-11-03 04:44:39,274 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:44:39 WrapperNode [2021-11-03 04:44:39,275 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:44:39,276 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 04:44:39,276 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 04:44:39,276 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 04:44:39,287 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:44:39" (1/1) ... [2021-11-03 04:44:39,343 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:44:39" (1/1) ... [2021-11-03 04:44:39,636 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 04:44:39,637 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 04:44:39,638 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 04:44:39,638 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 04:44:39,646 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:44:39" (1/1) ... [2021-11-03 04:44:39,647 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:44:39" (1/1) ... [2021-11-03 04:44:39,689 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:44:39" (1/1) ... [2021-11-03 04:44:39,689 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:44:39" (1/1) ... [2021-11-03 04:44:39,764 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:44:39" (1/1) ... [2021-11-03 04:44:39,849 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:44:39" (1/1) ... [2021-11-03 04:44:39,876 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:44:39" (1/1) ... [2021-11-03 04:44:39,905 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 04:44:39,906 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 04:44:39,906 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 04:44:39,907 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 04:44:39,908 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:44:39" (1/1) ... [2021-11-03 04:44:39,916 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:44:39,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3591be3e-2fba-4136-8a4c-e2a3193fb7fb/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:44:39,940 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3591be3e-2fba-4136-8a4c-e2a3193fb7fb/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 04:44:39,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3591be3e-2fba-4136-8a4c-e2a3193fb7fb/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 04:44:39,989 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 04:44:39,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-03 04:44:39,989 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 04:44:39,989 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 04:48:25,132 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 04:48:25,132 INFO L299 CfgBuilder]: Removed 497 assume(true) statements. [2021-11-03 04:48:25,135 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:48:25 BoogieIcfgContainer [2021-11-03 04:48:25,136 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 04:48:25,138 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 04:48:25,138 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 04:48:25,147 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 04:48:25,147 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:44:37" (1/3) ... [2021-11-03 04:48:25,149 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a393df9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:48:25, skipping insertion in model container [2021-11-03 04:48:25,149 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:44:39" (2/3) ... [2021-11-03 04:48:25,149 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a393df9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:48:25, skipping insertion in model container [2021-11-03 04:48:25,150 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:48:25" (3/3) ... [2021-11-03 04:48:25,151 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem11.c [2021-11-03 04:48:25,157 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 04:48:25,158 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 100 error locations. [2021-11-03 04:48:25,236 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 04:48:25,245 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 04:48:25,245 INFO L340 AbstractCegarLoop]: Starting to check reachability of 100 error locations. [2021-11-03 04:48:25,281 INFO L276 IsEmpty]: Start isEmpty. Operand has 305 states, 204 states have (on average 1.9901960784313726) internal successors, (406), 304 states have internal predecessors, (406), 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 04:48:25,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-03 04:48:25,294 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:48:25,294 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-03 04:48:25,295 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 97 more)] === [2021-11-03 04:48:25,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:48:25,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1860812745, now seen corresponding path program 1 times [2021-11-03 04:48:25,310 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:48:25,311 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615364983] [2021-11-03 04:48:25,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:48:25,312 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:48:25,683 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 04:48:25,686 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [278455812] [2021-11-03 04:48:25,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:48:25,687 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:48:25,687 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3591be3e-2fba-4136-8a4c-e2a3193fb7fb/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:48:25,689 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3591be3e-2fba-4136-8a4c-e2a3193fb7fb/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:48:25,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3591be3e-2fba-4136-8a4c-e2a3193fb7fb/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-03 04:48:27,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:48:27,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-03 04:48:27,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:49:52,444 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:49:52,445 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615364983] [2021-11-03 04:49:52,445 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 04:49:52,446 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [278455812] [2021-11-03 04:49:52,446 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-03 04:49:52,447 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [199904426] [2021-11-03 04:49:52,473 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2021-11-03 04:49:52,473 INFO L166 IcfgInterpreter]: Building call graph [2021-11-03 04:49:52,477 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-03 04:49:52,483 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-03 04:49:52,484 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-03 04:49:52,524 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:49:52,527 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:49:52,528 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:49:52,528 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-03 04:49:52,529 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:49:52,530 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:49:52,530 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-03 04:49:52,532 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:49:52,532 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:49:52,533 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-03 04:49:52,546 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 399 [2021-11-03 04:49:52,589 INFO L446 ElimStorePlain]: Different costs {0=[v_~inputs~0_16, |v_#length_8|], 10=[|v_#valid_9|]} [2021-11-03 04:49:52,631 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 54 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 51 [2021-11-03 04:49:52,632 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:49:52,633 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-11-03 04:49:52,634 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:49:52,634 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-11-03 04:49:52,635 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 04:49:52,637 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:49:52,776 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:49:52,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:49:52,800 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-03 04:49:52,801 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:49:52,802 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-03 04:49:52,802 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:49:52,803 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-03 04:49:52,803 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-03 04:49:52,804 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:49:52,865 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:49:52,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:49:52,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:49:52,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:49:52,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:49:52,899 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-03 04:49:52,900 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:49:52,902 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 04:49:52,903 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:49:52,904 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 04:49:52,904 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-11-03 04:49:52,905 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:49:52,961 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:49:52,974 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:49:52,987 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 397 [2021-11-03 04:49:52,991 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-03 04:49:52,992 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:395, output treesize:397 [2021-11-03 04:49:53,013 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:49:53,030 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 405 [2021-11-03 04:49:53,099 FATAL L? ?]: Ignoring exception! java.lang.ArithmeticException: BigInteger: modulus not positive at java.base/java.math.BigInteger.mod(BigInteger.java:2697) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplifyNestedModulo(SmtUtils.java:1827) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.mod(SmtUtils.java:1796) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.termWithLocalSimplification(SmtUtils.java:1416) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.termWithLocalSimplification(SmtUtils.java:1340) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.convertApplicationTerm(SmtUtils.java:1329) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SubstitutionWithLocalSimplification.convertApplicationTerm(SubstitutionWithLocalSimplification.java:49) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer$BuildApplicationTerm.walk(TermTransformer.java:339) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.transform(TermTransformer.java:272) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IteRemover.removeIteTerm(IteRemover.java:91) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IteRemover.transformNonCoreBooleanSubterm(IteRemover.java:65) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.NonCoreBooleanSubTermTransformer$NonCoreBooleanSubtermTransformerHelper.convert(NonCoreBooleanSubTermTransformer.java:91) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.cacheConvert(TermTransformer.java:131) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer$Convert.walk(TermTransformer.java:79) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.transform(TermTransformer.java:272) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.NonCoreBooleanSubTermTransformer.transform(NonCoreBooleanSubTermTransformer.java:51) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.elimPushPull(PartialQuantifierElimination.java:292) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.elimPushPull(PartialQuantifierElimination.java:286) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.quantifier(PartialQuantifierElimination.java:214) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.newQuantifier(SymbolicTools.java:279) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.projectExistentially(SymbolicTools.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermDomainOperationProvider.projectExistentially(TermDomainOperationProvider.java:1) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateTransformer.strongestPostcondition(PredicateTransformer.java:131) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:116) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:609) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-03 04:49:53,103 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:49:53,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-11-03 04:49:53,104 ERROR L172 FreeRefinementEngine]: Strategy SIFA_TAIPAN failed to provide any proof altough trace is infeasible [2021-11-03 04:49:53,106 INFO L627 BasicCegarLoop]: Counterexample might be feasible [2021-11-03 04:49:53,112 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:49:53,114 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:49:53,115 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:49:53,115 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:49:53,115 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:49:53,116 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:49:53,116 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:49:53,116 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:49:53,117 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:49:53,117 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:49:53,117 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:49:53,117 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:49:53,118 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:49:53,118 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:49:53,118 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:49:53,119 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:49:53,119 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:49:53,119 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:49:53,119 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:49:53,120 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:49:53,120 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:49:53,120 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:49:53,120 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:49:53,121 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:49:53,121 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:49:53,121 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:49:53,121 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:49:53,122 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr27ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:49:53,122 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr28ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:49:53,122 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr29ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:49:53,123 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr30ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:49:53,123 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr31ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:49:53,123 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr32ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:49:53,123 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr33ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:49:53,124 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr34ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:49:53,124 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr35ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:49:53,124 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:49:53,124 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr37ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:49:53,125 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr38ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:49:53,125 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr39ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:49:53,125 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr40ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:49:53,125 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr41ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:49:53,126 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr42ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:49:53,126 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr43ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:49:53,126 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr44ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:49:53,126 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr45ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:49:53,127 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr46ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:49:53,127 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr47ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:49:53,127 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr48ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:49:53,128 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr49ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:49:53,128 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr50ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:49:53,128 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr51ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:49:53,128 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr52ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:49:53,129 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr53ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:49:53,129 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr54ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:49:53,129 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr55ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:49:53,129 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr56ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:49:53,130 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr57ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:49:53,130 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr58ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:49:53,130 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr59ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:49:53,130 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr60ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:49:53,131 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr61ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:49:53,131 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr62ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:49:53,131 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr63ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:49:53,132 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr64ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:49:53,132 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr65ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:49:53,132 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr66ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:49:53,132 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr67ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:49:53,133 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr68ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:49:53,133 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr69ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:49:53,133 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr70ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:49:53,133 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr71ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:49:53,134 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr72ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:49:53,134 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr73ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:49:53,134 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr74ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:49:53,134 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr75ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:49:53,135 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr76ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:49:53,135 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr77ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:49:53,135 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr78ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:49:53,135 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr79ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:49:53,136 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr80ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:49:53,136 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr81ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:49:53,136 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr82ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:49:53,136 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr83ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:49:53,137 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr84ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:49:53,137 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr85ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:49:53,137 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr86ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:49:53,137 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr87ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:49:53,138 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr88ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:49:53,138 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr89ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:49:53,138 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr90ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:49:53,138 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr91ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:49:53,139 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr92ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:49:53,139 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr93ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:49:53,139 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr94ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:49:53,139 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr95ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:49:53,140 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr96ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:49:53,140 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr97ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:49:53,140 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr98ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:49:53,140 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr99ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:49:53,191 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3591be3e-2fba-4136-8a4c-e2a3193fb7fb/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-03 04:49:53,360 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3591be3e-2fba-4136-8a4c-e2a3193fb7fb/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:49:53,363 INFO L731 BasicCegarLoop]: Path program histogram: [1] [2021-11-03 04:49:53,365 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-03 04:49:53,383 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 04:49:53 BoogieIcfgContainer [2021-11-03 04:49:53,383 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-03 04:49:53,383 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-03 04:49:53,383 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-03 04:49:53,384 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-03 04:49:53,388 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:48:25" (3/4) ... [2021-11-03 04:49:53,391 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-03 04:49:53,391 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-03 04:49:53,392 INFO L168 Benchmark]: Toolchain (without parser) took 315808.63 ms. Allocated memory was 107.0 MB in the beginning and 3.1 GB in the end (delta: 3.0 GB). Free memory was 64.8 MB in the beginning and 2.3 GB in the end (delta: -2.3 GB). Peak memory consumption was 740.0 MB. Max. memory is 16.1 GB. [2021-11-03 04:49:53,394 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 107.0 MB. Free memory was 82.3 MB in the beginning and 82.3 MB in the end (delta: 25.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:49:53,396 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1689.89 ms. Allocated memory was 107.0 MB in the beginning and 132.1 MB in the end (delta: 25.2 MB). Free memory was 64.5 MB in the beginning and 83.3 MB in the end (delta: -18.8 MB). Peak memory consumption was 38.6 MB. Max. memory is 16.1 GB. [2021-11-03 04:49:53,399 INFO L168 Benchmark]: Boogie Procedure Inliner took 360.75 ms. Allocated memory is still 132.1 MB. Free memory was 83.3 MB in the beginning and 64.9 MB in the end (delta: 18.4 MB). Peak memory consumption was 45.8 MB. Max. memory is 16.1 GB. [2021-11-03 04:49:53,400 INFO L168 Benchmark]: Boogie Preprocessor took 268.35 ms. Allocated memory was 132.1 MB in the beginning and 211.8 MB in the end (delta: 79.7 MB). Free memory was 64.9 MB in the beginning and 137.9 MB in the end (delta: -73.0 MB). Peak memory consumption was 34.7 MB. Max. memory is 16.1 GB. [2021-11-03 04:49:53,401 INFO L168 Benchmark]: RCFGBuilder took 225229.57 ms. Allocated memory was 211.8 MB in the beginning and 851.4 MB in the end (delta: 639.6 MB). Free memory was 137.9 MB in the beginning and 215.3 MB in the end (delta: -77.4 MB). Peak memory consumption was 578.8 MB. Max. memory is 16.1 GB. [2021-11-03 04:49:53,402 INFO L168 Benchmark]: TraceAbstraction took 88245.24 ms. Allocated memory was 851.4 MB in the beginning and 3.1 GB in the end (delta: 2.3 GB). Free memory was 215.3 MB in the beginning and 2.3 GB in the end (delta: -2.1 GB). Peak memory consumption was 146.9 MB. Max. memory is 16.1 GB. [2021-11-03 04:49:53,402 INFO L168 Benchmark]: Witness Printer took 8.04 ms. Allocated memory is still 3.1 GB. Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:49:53,406 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 107.0 MB. Free memory was 82.3 MB in the beginning and 82.3 MB in the end (delta: 25.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 1689.89 ms. Allocated memory was 107.0 MB in the beginning and 132.1 MB in the end (delta: 25.2 MB). Free memory was 64.5 MB in the beginning and 83.3 MB in the end (delta: -18.8 MB). Peak memory consumption was 38.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 360.75 ms. Allocated memory is still 132.1 MB. Free memory was 83.3 MB in the beginning and 64.9 MB in the end (delta: 18.4 MB). Peak memory consumption was 45.8 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 268.35 ms. Allocated memory was 132.1 MB in the beginning and 211.8 MB in the end (delta: 79.7 MB). Free memory was 64.9 MB in the beginning and 137.9 MB in the end (delta: -73.0 MB). Peak memory consumption was 34.7 MB. Max. memory is 16.1 GB. * RCFGBuilder took 225229.57 ms. Allocated memory was 211.8 MB in the beginning and 851.4 MB in the end (delta: 639.6 MB). Free memory was 137.9 MB in the beginning and 215.3 MB in the end (delta: -77.4 MB). Peak memory consumption was 578.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 88245.24 ms. Allocated memory was 851.4 MB in the beginning and 3.1 GB in the end (delta: 2.3 GB). Free memory was 215.3 MB in the beginning and 2.3 GB in the end (delta: -2.1 GB). Peak memory consumption was 146.9 MB. Max. memory is 16.1 GB. * Witness Printer took 8.04 ms. Allocated memory is still 3.1 GB. Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: 1.0 MB). There was no memory consumed. 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 - UnprovableResult [Line: 14]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L118] int inputs[] = {7,10,6,2,5,3,9,4,8,1}; [L292] int a589117628 = 34; [L293] int a1290652559 = 4; [L294] int a236788248 = 16; [L295] int a1580522136 = 161; [L296] int a45685611 = 11; [L297] int a1889803145 = 118; [L298] int a910748832 = 36; [L299] int a471011792 = 10; [L300] int a946891643 = 5; [L301] int a665096794 = 11; [L302] int a850881173 = 141; [L303] int a2040628137 = 8; [L304] int a583510163 = 77; [L305] int a1859402009 = 14; [L306] int a268371874 = 51; [L307] int a837448621 = 32; [L308] int a824024208 = 32; [L309] int a1171576990 = 32; [L310] int a1422023390 = -4; [L311] int a1605463015 = 9; [L312] int a812175843 = 36; [L313] int a890181220 = 32; [L314] int a808219163 = 35; [L315] int a1210734340 = 58; [L316] int a1864015649 = 33; [L317] int a1944090451 = 34; [L318] int a412613099 = -28; [L319] int a2139179119 = 15; [L320] int cf = 1; [L321] int a648283191 = -108; [L322] int a71064409 = -168; [L323] int a499699109 = 3; [L324] int a1001390225 = -24; [L325] int a274381288 = 312; [L326] int a1218264876 = 32; [L327] int a1535937505 = 32; [L328] int a1879373572 = 32; [L329] int a2064844468 = 32; [L330] int a182175502 = 7; [L331] int a482477713 = 8; [L332] int a44138666 = 36; [L333] int a418218587 = 36; [L334] int a621522874 = 131; [L335] int a2083223046 = 35; [L336] int a1179664392 = 33; [L337] int a166920931 = 8; [L338] int a1684594625 = 108; [L339] int a1534902259 = 32; [L340] int a430318312 = 3; [L341] int a1821141922 = 35; [L342] int a835102539 = 5; [L343] int a2079503415 = 13; [L344] int a1071924404 = 34; [L345] int a2061255735 = 6; [L346] int a2122722213 = 2; [L347] int a552913881 = 520; [L348] int a173429297 = -35; [L349] int a763506461 = 0; [L350] int a635353122 = 1; [L351] int a1075927325 = 0; [L352] int a434613686 = 0; [L353] int a95561532 = 0; [L354] int a1487195600 = 1; [L355] int a275262794 = 0; [L356] int a273635060 = 1; [L357] int a1221017635 = 0; [L358] int a311962986 = 0; [L359] int a2084484762 = 0; [L360] int a460288454 = 0; [L361] int a418880267 = 1; [L362] int a1264277206 = 1; [L363] int a1355501303 = 1; [L364] int a547738254 = 0; [L365] int a1515611838 = 0; [L366] int a514396383 = 2; [L367] int a1955344686 = 0; [L368] int a220097023 = 1; [L369] int a1053339053 = 2; [L370] int a501521675 = 3; [L371] int a487646776 = 2; [L372] int a1716545843 = 0; [L373] int a51415461 = 3; [L374] int a1425431969 = 2; [L375] int a416125995 = 3; [L376] int a1498331231 = 1; [L377] int a1148381820 = 2; [L378] int a838736370 = 2; [L379] int a834109496 = 3; [L380] int a1859169403 = 0; [L381] int a1743588795 = 1; [L382] int a112204540 = 3; [L383] int a1347184625 = 1; [L2448] COND TRUE 1 [L2451] int input; [L2452] input = __VERIFIER_nondet_int() [L2454] COND FALSE !((input != 7) && (input != 10) && (input != 6) && (input != 2) && (input != 5) && (input != 3) && (input != 9) && (input != 4) && (input != 8) && (input != 1)) [L2364] cf = 1 [L2366] COND TRUE (a850881173 <= 37 && ((((a1210734340 <= 17 && (( cf==1 && a471011792 == 5) && a1001390225 <= -146)) && a1879373572 == 33) && a665096794 == 10) && a837448621 == 33)) [L2367] COND TRUE (a2061255735 == 5 && ((a182175502 == 6 && ((a2040628137 == 7 && (a412613099 <= -144 && (a44138666 == 36 && cf==1 ))) && a835102539 == 4)) && a665096794 == 10)) [L833] COND TRUE (((a1290652559 == 3 && ( cf==1 && a236788248 == 17)) && a1001390225 <= -146) && (((a412613099 <= -144 && a268371874 <= 28) && a2040628137 == 7) && a1879373572 == 33)) [L789] COND FALSE !((((a583510163 <= 8 && ( cf==1 && (input == 1))) && a1171576990 == 33) && (a412613099 <= -144 && (a890181220 == 33 && (a850881173 <= 37 && a1210734340 <= 17))))) [L807] COND FALSE !(((a2061255735 == 5 && (a268371874 <= 28 && (a850881173 <= 37 && a1171576990 == 33))) && (a1210734340 <= 17 && (((input == 8) && cf==1 ) && a1534902259 == 33)))) [L2371] COND FALSE !(((((28 < a268371874) && (76 >= a268371874)) && (a2061255735 == 6 && (((a182175502 == 7 && a837448621 == 32) && a1879373572 == 32) && a1171576990 == 32))) && (a471011792 == 6 && cf==1 ))) [L2385] COND TRUE (((a2061255735 == 7 && ((a471011792 == 7 && cf==1 ) && a1290652559 == 5)) && a665096794 == 12) && ((a2040628137 == 9 && a1879373572 == 34) && ((51 < a1001390225) && (148 >= a1001390225)))) [L2386] COND FALSE !(((a2064844468 == 34 && a665096794 == 12) && (a1171576990 == 34 && (a890181220 == 34 && (a837448621 == 34 && (a1290652559 == 5 && (a418218587 == 32 && cf==1 ))))))) [L2390] COND TRUE ((a412613099 <= -144 && (a1290652559 == 3 && a182175502 == 6)) && ((a1534902259 == 33 && (a2061255735 == 5 && ( cf==1 && a471011792 == 8))) && a2064844468 == 33)) [L2391] COND FALSE !(((((a665096794 == 10 && a837448621 == 33) && a583510163 <= 8) && a1171576990 == 33) && ((a1879373572 == 33 && ( cf==1 && a1179664392 == 33)) && a268371874 <= 28))) [L2394] COND FALSE !((((a1179664392 == 34 && cf==1 ) && a665096794 == 10) && (a837448621 == 33 && (a1879373572 == 33 && ((a2061255735 == 5 && a850881173 <= 37) && a268371874 <= 28))))) [L2398] COND TRUE (((a1534902259 == 33 && (a1171576990 == 33 && a890181220 == 33)) && a665096794 == 10) && (a2061255735 == 5 && ((a471011792 == 9 && cf==1 ) && a268371874 <= 28))) [L2399] COND FALSE !(((( cf==1 && a236788248 == 14) && a1001390225 <= -146) && (a2061255735 == 5 && (a665096794 == 10 && ((a1171576990 == 33 && a850881173 <= 37) && a1534902259 == 33))))) [L2402] COND FALSE !(((a182175502 == 6 && (a2040628137 == 7 && a1879373572 == 33)) && (a837448621 == 33 && (((a236788248 == 15 && cf==1 ) && a412613099 <= -144) && a835102539 == 4)))) [L2405] COND FALSE !(((a1001390225 <= -146 && a890181220 == 33) && ((((a2061255735 == 5 && (a236788248 == 17 && cf==1 )) && a2064844468 == 33) && a850881173 <= 37) && a1210734340 <= 17))) [L2409] COND FALSE !(((a1290652559 == 4 && (a1171576990 == 32 && ((37 < a850881173) && (184 >= a850881173)))) && ((a2064844468 == 32 && (((8 < a583510163) && (150 >= a583510163)) && (a471011792 == 10 && cf==1 ))) && a2040628137 == 8))) [L2417] COND TRUE (((( cf==1 && a471011792 == 11) && ((28 < a268371874) && (76 >= a268371874))) && a1171576990 == 32) && (a1534902259 == 32 && ((((17 < a1210734340) && (187 >= a1210734340)) && a2064844468 == 32) && a182175502 == 7))) [L2418] COND TRUE ((((a2061255735 == 6 && ((((-146 < a1001390225) && (51 >= a1001390225)) && ( cf==1 && ((116 < a621522874) && (330 >= a621522874)))) && ((17 < a1210734340) && (187 >= a1210734340)))) && a2040628137 == 8) && ((37 < a850881173) && (184 >= a850881173))) && ((8 < a583510163) && (150 >= a583510163))) [L1847] COND FALSE !(((a890181220 == 32 && (((28 < a268371874) && (76 >= a268371874)) && (a1290652559 == 4 && a2064844468 == 32))) && (((((-26 < a1684594625) && (105 >= a1684594625)) && cf==1 ) && a837448621 == 32) && a835102539 == 5))) [L2421] COND TRUE ((((37 < a850881173) && (184 >= a850881173)) && (a837448621 == 32 && (a835102539 == 5 && ( cf==1 && ((330 < a621522874) && (523 >= a621522874)))))) && (a2040628137 == 8 && (a1879373572 == 32 && ((28 < a268371874) && (76 >= a268371874))))) [L1989] COND FALSE !(((a890181220 == 32 && (a824024208 == 36 && cf==1 )) && ((a2064844468 == 32 && ((((-144 < a412613099) && (-18 >= a412613099)) && a2040628137 == 8) && a1290652559 == 4)) && a1879373572 == 32))) [L2425] COND FALSE !(((((8 < a583510163) && (150 >= a583510163)) && a1534902259 == 32) && (((a890181220 == 32 && (( cf==1 && a471011792 == 12) && ((28 < a268371874) && (76 >= a268371874)))) && a1290652559 == 4) && a1879373572 == 32))) [L387] COND TRUE ((a824024208 == 33 && ((330 < a621522874) && (523 >= a621522874))) && a471011792 == 11) [L388] cf = 0 [L14] reach_error() - UnprovableResult [Line: 13]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 13]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 14]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 14]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 14]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 14]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 14]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 14]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 13]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 14]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 14]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 13]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 14]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 13]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 13]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 14]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 13]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 14]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 13]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 14]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 14]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 14]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 13]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 14]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 14]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 14]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 14]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 14]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 13]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 13]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 14]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 14]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 13]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 13]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 14]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 14]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 14]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 14]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 13]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 14]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 14]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 14]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 13]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 13]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 13]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 14]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 13]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 13]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 14]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 14]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 14]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 13]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 14]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 14]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 14]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 13]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 14]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 14]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 13]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 14]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 13]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 14]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 14]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 14]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 13]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 13]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 14]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 14]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 13]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 14]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 14]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 13]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 13]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 13]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 13]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 14]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 14]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 13]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 13]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 14]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 14]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 14]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 14]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 14]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 13]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 14]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 14]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 14]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 13]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 14]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 14]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 13]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 14]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 14]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 14]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 13]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 13]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 13]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 14]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 305 locations, 100 error locations. Started 1 CEGAR loops. OverallTime: 88.1s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=305occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 85.3s InterpolantComputationTime, 5 NumberOfCodeBlocks, 5 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 236 ConjunctsInSsa, 24 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-03 04:49:53,659 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3591be3e-2fba-4136-8a4c-e2a3193fb7fb/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3591be3e-2fba-4136-8a4c-e2a3193fb7fb/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3591be3e-2fba-4136-8a4c-e2a3193fb7fb/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_3591be3e-2fba-4136-8a4c-e2a3193fb7fb/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3591be3e-2fba-4136-8a4c-e2a3193fb7fb/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2018/Problem11.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3591be3e-2fba-4136-8a4c-e2a3193fb7fb/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3591be3e-2fba-4136-8a4c-e2a3193fb7fb/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 940624650400628fbc547d76c7cce642a9063fb1576962b71733623b165f113e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:49:55,947 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:49:55,950 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:49:55,992 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:49:55,993 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:49:55,997 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:49:56,000 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:49:56,008 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:49:56,011 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:49:56,016 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:49:56,017 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:49:56,018 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:49:56,019 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:49:56,020 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:49:56,021 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:49:56,022 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:49:56,023 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:49:56,024 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:49:56,033 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:49:56,036 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:49:56,038 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:49:56,041 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:49:56,043 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:49:56,044 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:49:56,047 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:49:56,048 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:49:56,048 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:49:56,049 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:49:56,050 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:49:56,051 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:49:56,051 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:49:56,059 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:49:56,061 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:49:56,062 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:49:56,063 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:49:56,064 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:49:56,065 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:49:56,065 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:49:56,065 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:49:56,067 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:49:56,068 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:49:56,073 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3591be3e-2fba-4136-8a4c-e2a3193fb7fb/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-03 04:49:56,119 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:49:56,119 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:49:56,121 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:49:56,121 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:49:56,121 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:49:56,121 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:49:56,122 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:49:56,122 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:49:56,122 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:49:56,124 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:49:56,125 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 04:49:56,125 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 04:49:56,125 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:49:56,125 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:49:56,126 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:49:56,126 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:49:56,126 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:49:56,126 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 04:49:56,126 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 04:49:56,127 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 04:49:56,127 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:49:56,127 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:49:56,127 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:49:56,127 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:49:56,128 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 04:49:56,128 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:49:56,128 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:49:56,128 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:49:56,129 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:49:56,129 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:49:56,129 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 04:49:56,129 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 04:49:56,129 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:49:56,130 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:49:56,130 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:49:56,130 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3591be3e-2fba-4136-8a4c-e2a3193fb7fb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3591be3e-2fba-4136-8a4c-e2a3193fb7fb/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 940624650400628fbc547d76c7cce642a9063fb1576962b71733623b165f113e [2021-11-03 04:49:56,516 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:49:56,537 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:49:56,540 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:49:56,542 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:49:56,542 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:49:56,543 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3591be3e-2fba-4136-8a4c-e2a3193fb7fb/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/eca-rers2018/Problem11.c [2021-11-03 04:49:56,619 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3591be3e-2fba-4136-8a4c-e2a3193fb7fb/bin/utaipan-aC7eJsxGYH/data/a1b592922/3dcf8fd6b14c4734903aafadd31b3d46/FLAGff773267f [2021-11-03 04:49:57,417 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:49:57,418 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3591be3e-2fba-4136-8a4c-e2a3193fb7fb/sv-benchmarks/c/eca-rers2018/Problem11.c [2021-11-03 04:49:57,457 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3591be3e-2fba-4136-8a4c-e2a3193fb7fb/bin/utaipan-aC7eJsxGYH/data/a1b592922/3dcf8fd6b14c4734903aafadd31b3d46/FLAGff773267f [2021-11-03 04:49:57,532 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3591be3e-2fba-4136-8a4c-e2a3193fb7fb/bin/utaipan-aC7eJsxGYH/data/a1b592922/3dcf8fd6b14c4734903aafadd31b3d46 [2021-11-03 04:49:57,535 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:49:57,536 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:49:57,538 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:49:57,538 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:49:57,541 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:49:57,542 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:49:57" (1/1) ... [2021-11-03 04:49:57,543 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@508d73d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:49:57, skipping insertion in model container [2021-11-03 04:49:57,543 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:49:57" (1/1) ... [2021-11-03 04:49:57,551 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:49:57,639 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:49:57,814 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_3591be3e-2fba-4136-8a4c-e2a3193fb7fb/sv-benchmarks/c/eca-rers2018/Problem11.c[778,791] [2021-11-03 04:49:57,821 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_3591be3e-2fba-4136-8a4c-e2a3193fb7fb/sv-benchmarks/c/eca-rers2018/Problem11.c[817,830] [2021-11-03 04:49:58,982 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:49:58,996 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 04:49:59,011 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_3591be3e-2fba-4136-8a4c-e2a3193fb7fb/sv-benchmarks/c/eca-rers2018/Problem11.c[778,791] [2021-11-03 04:49:59,012 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_3591be3e-2fba-4136-8a4c-e2a3193fb7fb/sv-benchmarks/c/eca-rers2018/Problem11.c[817,830] [2021-11-03 04:49:59,263 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:49:59,362 INFO L208 MainTranslator]: Completed translation [2021-11-03 04:49:59,363 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:49:59 WrapperNode [2021-11-03 04:49:59,363 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:49:59,364 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 04:49:59,364 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 04:49:59,364 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 04:49:59,372 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:49:59" (1/1) ... [2021-11-03 04:49:59,477 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:49:59" (1/1) ... [2021-11-03 04:49:59,608 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 04:49:59,609 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 04:49:59,609 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 04:49:59,609 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 04:49:59,620 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:49:59" (1/1) ... [2021-11-03 04:49:59,620 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:49:59" (1/1) ... [2021-11-03 04:49:59,634 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:49:59" (1/1) ... [2021-11-03 04:49:59,635 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:49:59" (1/1) ... [2021-11-03 04:49:59,731 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:49:59" (1/1) ... [2021-11-03 04:49:59,761 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:49:59" (1/1) ... [2021-11-03 04:49:59,774 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:49:59" (1/1) ... [2021-11-03 04:49:59,803 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 04:49:59,805 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 04:49:59,805 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 04:49:59,805 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 04:49:59,807 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:49:59" (1/1) ... [2021-11-03 04:49:59,814 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:49:59,829 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3591be3e-2fba-4136-8a4c-e2a3193fb7fb/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:49:59,839 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3591be3e-2fba-4136-8a4c-e2a3193fb7fb/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 04:49:59,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3591be3e-2fba-4136-8a4c-e2a3193fb7fb/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 04:49:59,889 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 04:49:59,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 04:49:59,890 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 04:49:59,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 04:50:33,818 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 04:50:33,819 INFO L299 CfgBuilder]: Removed 497 assume(true) statements. [2021-11-03 04:50:33,823 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:50:33 BoogieIcfgContainer [2021-11-03 04:50:33,823 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 04:50:33,825 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 04:50:33,826 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 04:50:33,829 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 04:50:33,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:49:57" (1/3) ... [2021-11-03 04:50:33,830 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ecf36cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:50:33, skipping insertion in model container [2021-11-03 04:50:33,830 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:49:59" (2/3) ... [2021-11-03 04:50:33,830 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ecf36cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:50:33, skipping insertion in model container [2021-11-03 04:50:33,831 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:50:33" (3/3) ... [2021-11-03 04:50:33,832 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem11.c [2021-11-03 04:50:33,837 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 04:50:33,838 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 100 error locations. [2021-11-03 04:50:33,889 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 04:50:33,895 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 04:50:33,896 INFO L340 AbstractCegarLoop]: Starting to check reachability of 100 error locations. [2021-11-03 04:50:33,926 INFO L276 IsEmpty]: Start isEmpty. Operand has 650 states, 549 states have (on average 1.819672131147541) internal successors, (999), 649 states have internal predecessors, (999), 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 04:50:33,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-03 04:50:33,934 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:50:33,935 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:50:33,936 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 97 more)] === [2021-11-03 04:50:33,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:50:33,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1416223949, now seen corresponding path program 1 times [2021-11-03 04:50:33,954 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:50:33,954 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1215780664] [2021-11-03 04:50:33,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:50:33,955 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:50:33,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3591be3e-2fba-4136-8a4c-e2a3193fb7fb/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:50:33,959 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3591be3e-2fba-4136-8a4c-e2a3193fb7fb/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:50:33,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3591be3e-2fba-4136-8a4c-e2a3193fb7fb/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 04:50:34,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:50:34,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-03 04:50:34,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:50:35,366 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 04:50:35,366 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:50:36,656 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 04:50:36,657 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:50:36,657 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1215780664] [2021-11-03 04:50:36,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1215780664] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:50:36,658 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:50:36,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-03 04:50:36,660 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855732012] [2021-11-03 04:50:36,666 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 04:50:36,666 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:50:36,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 04:50:36,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:50:36,691 INFO L87 Difference]: Start difference. First operand has 650 states, 549 states have (on average 1.819672131147541) internal successors, (999), 649 states have internal predecessors, (999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 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 04:51:12,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:51:12,726 INFO L93 Difference]: Finished difference Result 1625 states and 2602 transitions. [2021-11-03 04:51:12,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 04:51:12,728 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 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 14 [2021-11-03 04:51:12,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:51:12,753 INFO L225 Difference]: With dead ends: 1625 [2021-11-03 04:51:12,753 INFO L226 Difference]: Without dead ends: 968 [2021-11-03 04:51:12,758 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:51:12,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2021-11-03 04:51:12,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 770. [2021-11-03 04:51:12,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 770 states, 670 states have (on average 1.5417910447761194) internal successors, (1033), 769 states have internal predecessors, (1033), 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 04:51:12,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 770 states to 770 states and 1033 transitions. [2021-11-03 04:51:12,844 INFO L78 Accepts]: Start accepts. Automaton has 770 states and 1033 transitions. Word has length 14 [2021-11-03 04:51:12,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:51:12,845 INFO L470 AbstractCegarLoop]: Abstraction has 770 states and 1033 transitions. [2021-11-03 04:51:12,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 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 04:51:12,845 INFO L276 IsEmpty]: Start isEmpty. Operand 770 states and 1033 transitions. [2021-11-03 04:51:12,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-03 04:51:12,847 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:51:12,847 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] [2021-11-03 04:51:12,863 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3591be3e-2fba-4136-8a4c-e2a3193fb7fb/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-03 04:51:13,058 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3591be3e-2fba-4136-8a4c-e2a3193fb7fb/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:51:13,059 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 97 more)] === [2021-11-03 04:51:13,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:51:13,060 INFO L85 PathProgramCache]: Analyzing trace with hash 323636281, now seen corresponding path program 1 times [2021-11-03 04:51:13,061 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:51:13,061 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1340179637] [2021-11-03 04:51:13,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:51:13,062 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:51:13,062 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3591be3e-2fba-4136-8a4c-e2a3193fb7fb/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:51:13,063 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3591be3e-2fba-4136-8a4c-e2a3193fb7fb/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:51:13,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3591be3e-2fba-4136-8a4c-e2a3193fb7fb/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 04:51:13,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:51:13,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:51:13,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:51:13,634 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 04:51:13,634 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:51:13,828 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 04:51:13,832 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:51:13,832 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1340179637] [2021-11-03 04:51:13,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1340179637] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:51:13,833 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:51:13,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-03 04:51:13,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332561267] [2021-11-03 04:51:13,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:51:13,835 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:51:13,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:51:13,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:51:13,837 INFO L87 Difference]: Start difference. First operand 770 states and 1033 transitions. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 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 04:51:24,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:51:24,447 INFO L93 Difference]: Finished difference Result 2960 states and 3979 transitions. [2021-11-03 04:51:24,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:51:24,481 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 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 20 [2021-11-03 04:51:24,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:51:24,495 INFO L225 Difference]: With dead ends: 2960 [2021-11-03 04:51:24,495 INFO L226 Difference]: Without dead ends: 2192 [2021-11-03 04:51:24,498 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 36 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 04:51:24,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2192 states. [2021-11-03 04:51:24,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2192 to 1804. [2021-11-03 04:51:24,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1804 states, 1704 states have (on average 1.5892018779342723) internal successors, (2708), 1803 states have internal predecessors, (2708), 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 04:51:24,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1804 states to 1804 states and 2708 transitions. [2021-11-03 04:51:24,592 INFO L78 Accepts]: Start accepts. Automaton has 1804 states and 2708 transitions. Word has length 20 [2021-11-03 04:51:24,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:51:24,593 INFO L470 AbstractCegarLoop]: Abstraction has 1804 states and 2708 transitions. [2021-11-03 04:51:24,593 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 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 04:51:24,593 INFO L276 IsEmpty]: Start isEmpty. Operand 1804 states and 2708 transitions. [2021-11-03 04:51:24,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-03 04:51:24,595 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:51:24,595 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] [2021-11-03 04:51:24,619 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3591be3e-2fba-4136-8a4c-e2a3193fb7fb/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-03 04:51:24,808 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3591be3e-2fba-4136-8a4c-e2a3193fb7fb/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:51:24,808 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 97 more)] === [2021-11-03 04:51:24,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:51:24,809 INFO L85 PathProgramCache]: Analyzing trace with hash 1442797772, now seen corresponding path program 1 times [2021-11-03 04:51:24,810 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:51:24,810 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1977761958] [2021-11-03 04:51:24,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:51:24,810 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:51:24,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3591be3e-2fba-4136-8a4c-e2a3193fb7fb/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:51:24,811 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3591be3e-2fba-4136-8a4c-e2a3193fb7fb/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:51:24,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3591be3e-2fba-4136-8a4c-e2a3193fb7fb/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 04:51:25,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:51:25,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 04:51:25,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:51:25,530 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 04:51:25,530 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:51:26,521 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 04:51:26,521 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:51:26,522 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1977761958] [2021-11-03 04:51:26,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1977761958] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:51:26,522 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:51:26,522 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-03 04:51:26,522 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185823524] [2021-11-03 04:51:26,523 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 04:51:26,523 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:51:26,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 04:51:26,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-03 04:51:26,524 INFO L87 Difference]: Start difference. First operand 1804 states and 2708 transitions. Second operand has 8 states, 8 states have (on average 5.125) internal successors, (41), 7 states have internal predecessors, (41), 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 04:54:04,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:54:04,297 INFO L93 Difference]: Finished difference Result 15087 states and 24710 transitions. [2021-11-03 04:54:04,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-03 04:54:04,298 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 7 states have internal predecessors, (41), 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 21 [2021-11-03 04:54:04,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:54:04,380 INFO L225 Difference]: With dead ends: 15087 [2021-11-03 04:54:04,380 INFO L226 Difference]: Without dead ends: 13285 [2021-11-03 04:54:04,386 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=131, Invalid=249, Unknown=0, NotChecked=0, Total=380 [2021-11-03 04:54:04,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13285 states. [2021-11-03 04:54:04,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13285 to 7508. [2021-11-03 04:54:04,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7508 states, 7408 states have (on average 1.6598272138228942) internal successors, (12296), 7507 states have internal predecessors, (12296), 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 04:54:04,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7508 states to 7508 states and 12296 transitions. [2021-11-03 04:54:04,677 INFO L78 Accepts]: Start accepts. Automaton has 7508 states and 12296 transitions. Word has length 21 [2021-11-03 04:54:04,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:54:04,678 INFO L470 AbstractCegarLoop]: Abstraction has 7508 states and 12296 transitions. [2021-11-03 04:54:04,682 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 7 states have internal predecessors, (41), 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 04:54:04,683 INFO L276 IsEmpty]: Start isEmpty. Operand 7508 states and 12296 transitions. [2021-11-03 04:54:04,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-03 04:54:04,690 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:54:04,690 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] [2021-11-03 04:54:04,714 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3591be3e-2fba-4136-8a4c-e2a3193fb7fb/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-03 04:54:04,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3591be3e-2fba-4136-8a4c-e2a3193fb7fb/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:54:04,910 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 97 more)] === [2021-11-03 04:54:04,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:54:04,910 INFO L85 PathProgramCache]: Analyzing trace with hash 814748903, now seen corresponding path program 1 times [2021-11-03 04:54:04,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:54:04,911 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [399292199] [2021-11-03 04:54:04,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:54:04,911 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:54:04,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3591be3e-2fba-4136-8a4c-e2a3193fb7fb/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:54:04,914 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3591be3e-2fba-4136-8a4c-e2a3193fb7fb/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:54:04,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3591be3e-2fba-4136-8a4c-e2a3193fb7fb/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-03 04:54:05,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:54:05,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:54:05,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:54:05,485 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 04:54:05,485 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:54:05,659 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 04:54:05,659 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:54:05,660 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [399292199] [2021-11-03 04:54:05,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [399292199] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:54:05,660 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:54:05,661 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-03 04:54:05,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272561668] [2021-11-03 04:54:05,661 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:54:05,662 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:54:05,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:54:05,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:54:05,663 INFO L87 Difference]: Start difference. First operand 7508 states and 12296 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 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 04:54:12,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:54:12,888 INFO L93 Difference]: Finished difference Result 29398 states and 48075 transitions. [2021-11-03 04:54:12,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:54:12,904 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 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 22 [2021-11-03 04:54:12,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:54:13,004 INFO L225 Difference]: With dead ends: 29398 [2021-11-03 04:54:13,005 INFO L226 Difference]: Without dead ends: 21892 [2021-11-03 04:54:13,022 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 40 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 04:54:13,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21892 states. [2021-11-03 04:54:13,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21892 to 13899. [2021-11-03 04:54:13,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13899 states, 13799 states have (on average 1.6635988115080802) internal successors, (22956), 13898 states have internal predecessors, (22956), 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 04:54:13,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13899 states to 13899 states and 22956 transitions. [2021-11-03 04:54:13,946 INFO L78 Accepts]: Start accepts. Automaton has 13899 states and 22956 transitions. Word has length 22 [2021-11-03 04:54:13,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:54:13,947 INFO L470 AbstractCegarLoop]: Abstraction has 13899 states and 22956 transitions. [2021-11-03 04:54:13,947 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 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 04:54:13,947 INFO L276 IsEmpty]: Start isEmpty. Operand 13899 states and 22956 transitions. [2021-11-03 04:54:13,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-03 04:54:13,948 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:54:13,949 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] [2021-11-03 04:54:13,984 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3591be3e-2fba-4136-8a4c-e2a3193fb7fb/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-03 04:54:14,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3591be3e-2fba-4136-8a4c-e2a3193fb7fb/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:54:14,163 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 97 more)] === [2021-11-03 04:54:14,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:54:14,163 INFO L85 PathProgramCache]: Analyzing trace with hash 64670545, now seen corresponding path program 1 times [2021-11-03 04:54:14,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:54:14,166 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [879749759] [2021-11-03 04:54:14,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:54:14,166 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:54:14,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3591be3e-2fba-4136-8a4c-e2a3193fb7fb/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:54:14,180 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3591be3e-2fba-4136-8a4c-e2a3193fb7fb/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:54:14,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3591be3e-2fba-4136-8a4c-e2a3193fb7fb/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-03 04:54:14,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:54:14,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:54:14,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:54:14,954 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 04:54:14,955 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:54:15,060 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 04:54:15,060 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:54:15,060 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [879749759] [2021-11-03 04:54:15,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [879749759] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:54:15,061 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:54:15,061 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:54:15,061 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907184956] [2021-11-03 04:54:15,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:54:15,062 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:54:15,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:54:15,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:54:15,063 INFO L87 Difference]: Start difference. First operand 13899 states and 22956 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 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 04:54:33,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:54:33,429 INFO L93 Difference]: Finished difference Result 40954 states and 69766 transitions. [2021-11-03 04:54:33,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:54:33,468 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 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 23 [2021-11-03 04:54:33,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:54:33,558 INFO L225 Difference]: With dead ends: 40954 [2021-11-03 04:54:33,572 INFO L226 Difference]: Without dead ends: 27057 [2021-11-03 04:54:33,613 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 42 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 04:54:33,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27057 states. [2021-11-03 04:54:34,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27057 to 23488. [2021-11-03 04:54:34,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23488 states, 23388 states have (on average 1.7119035402770653) internal successors, (40038), 23487 states have internal predecessors, (40038), 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 04:54:34,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23488 states to 23488 states and 40038 transitions. [2021-11-03 04:54:34,524 INFO L78 Accepts]: Start accepts. Automaton has 23488 states and 40038 transitions. Word has length 23 [2021-11-03 04:54:34,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:54:34,534 INFO L470 AbstractCegarLoop]: Abstraction has 23488 states and 40038 transitions. [2021-11-03 04:54:34,536 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 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 04:54:34,536 INFO L276 IsEmpty]: Start isEmpty. Operand 23488 states and 40038 transitions. [2021-11-03 04:54:34,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-03 04:54:34,537 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:54:34,537 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] [2021-11-03 04:54:34,565 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3591be3e-2fba-4136-8a4c-e2a3193fb7fb/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-11-03 04:54:34,761 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3591be3e-2fba-4136-8a4c-e2a3193fb7fb/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:54:34,761 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 97 more)] === [2021-11-03 04:54:34,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:54:34,761 INFO L85 PathProgramCache]: Analyzing trace with hash 744728915, now seen corresponding path program 1 times [2021-11-03 04:54:34,762 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:54:34,762 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1786087618] [2021-11-03 04:54:34,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:54:34,762 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:54:34,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3591be3e-2fba-4136-8a4c-e2a3193fb7fb/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:54:34,765 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3591be3e-2fba-4136-8a4c-e2a3193fb7fb/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:54:34,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3591be3e-2fba-4136-8a4c-e2a3193fb7fb/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-03 04:54:35,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:54:35,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:54:35,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:54:35,497 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 04:54:35,497 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:54:35,728 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 04:54:35,728 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:54:35,729 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1786087618] [2021-11-03 04:54:35,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1786087618] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:54:35,729 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:54:35,729 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-03 04:54:35,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065832238] [2021-11-03 04:54:35,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 04:54:35,730 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:54:35,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 04:54:35,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-03 04:54:35,731 INFO L87 Difference]: Start difference. First operand 23488 states and 40038 transitions. Second operand has 8 states, 8 states have (on average 4.25) internal successors, (34), 8 states have internal predecessors, (34), 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 04:56:35,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:56:35,742 INFO L93 Difference]: Finished difference Result 169057 states and 296763 transitions. [2021-11-03 04:56:35,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-03 04:56:35,743 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 8 states have internal predecessors, (34), 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 23 [2021-11-03 04:56:35,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:56:36,211 INFO L225 Difference]: With dead ends: 169057 [2021-11-03 04:56:36,223 INFO L226 Difference]: Without dead ends: 145571 [2021-11-03 04:56:36,295 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=150, Invalid=312, Unknown=0, NotChecked=0, Total=462 [2021-11-03 04:56:36,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145571 states. [2021-11-03 04:56:38,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145571 to 46868. [2021-11-03 04:56:38,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46868 states, 46768 states have (on average 1.7716387273349299) internal successors, (82856), 46867 states have internal predecessors, (82856), 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 04:56:38,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46868 states to 46868 states and 82856 transitions. [2021-11-03 04:56:38,777 INFO L78 Accepts]: Start accepts. Automaton has 46868 states and 82856 transitions. Word has length 23 [2021-11-03 04:56:38,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:56:38,778 INFO L470 AbstractCegarLoop]: Abstraction has 46868 states and 82856 transitions. [2021-11-03 04:56:38,778 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 8 states have internal predecessors, (34), 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 04:56:38,778 INFO L276 IsEmpty]: Start isEmpty. Operand 46868 states and 82856 transitions. [2021-11-03 04:56:38,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-03 04:56:38,779 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:56:38,779 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] [2021-11-03 04:56:38,797 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3591be3e-2fba-4136-8a4c-e2a3193fb7fb/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-11-03 04:56:38,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3591be3e-2fba-4136-8a4c-e2a3193fb7fb/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:56:38,997 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 97 more)] === [2021-11-03 04:56:38,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:56:38,998 INFO L85 PathProgramCache]: Analyzing trace with hash 1611767548, now seen corresponding path program 1 times [2021-11-03 04:56:38,998 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:56:38,998 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1926072846] [2021-11-03 04:56:38,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:56:38,999 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:56:38,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3591be3e-2fba-4136-8a4c-e2a3193fb7fb/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:56:38,999 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3591be3e-2fba-4136-8a4c-e2a3193fb7fb/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:56:39,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3591be3e-2fba-4136-8a4c-e2a3193fb7fb/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-03 04:56:39,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:56:39,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:56:39,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:56:39,616 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 04:56:39,617 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:56:39,728 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 04:56:39,729 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:56:39,729 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1926072846] [2021-11-03 04:56:39,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1926072846] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:56:39,729 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:56:39,729 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:56:39,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665585579] [2021-11-03 04:56:39,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:56:39,730 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:56:39,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:56:39,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:56:39,731 INFO L87 Difference]: Start difference. First operand 46868 states and 82856 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 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 04:56:41,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:56:41,103 INFO L93 Difference]: Finished difference Result 140164 states and 247806 transitions. [2021-11-03 04:56:41,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:56:41,104 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 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 24 [2021-11-03 04:56:41,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:56:41,368 INFO L225 Difference]: With dead ends: 140164 [2021-11-03 04:56:41,368 INFO L226 Difference]: Without dead ends: 140160 [2021-11-03 04:56:41,391 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 44 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 04:56:41,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140160 states. [2021-11-03 04:56:43,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140160 to 139168. [2021-11-03 04:56:43,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139168 states, 139068 states have (on average 1.7689619466735698) internal successors, (246006), 139167 states have internal predecessors, (246006), 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 04:56:43,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139168 states to 139168 states and 246006 transitions. [2021-11-03 04:56:43,589 INFO L78 Accepts]: Start accepts. Automaton has 139168 states and 246006 transitions. Word has length 24 [2021-11-03 04:56:43,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:56:43,590 INFO L470 AbstractCegarLoop]: Abstraction has 139168 states and 246006 transitions. [2021-11-03 04:56:43,590 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 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 04:56:43,590 INFO L276 IsEmpty]: Start isEmpty. Operand 139168 states and 246006 transitions. [2021-11-03 04:56:43,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-03 04:56:43,591 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:56:43,591 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] [2021-11-03 04:56:43,608 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3591be3e-2fba-4136-8a4c-e2a3193fb7fb/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-03 04:56:43,792 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3591be3e-2fba-4136-8a4c-e2a3193fb7fb/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:56:43,792 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 97 more)] === [2021-11-03 04:56:43,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:56:43,793 INFO L85 PathProgramCache]: Analyzing trace with hash -1737629602, now seen corresponding path program 1 times [2021-11-03 04:56:43,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:56:43,794 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [966819325] [2021-11-03 04:56:43,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:56:43,794 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:56:43,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3591be3e-2fba-4136-8a4c-e2a3193fb7fb/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:56:43,795 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3591be3e-2fba-4136-8a4c-e2a3193fb7fb/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:56:43,818 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3591be3e-2fba-4136-8a4c-e2a3193fb7fb/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-03 04:56:44,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:56:44,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:56:44,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:56:44,389 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 04:56:44,390 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:56:44,598 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 04:56:44,598 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:56:44,598 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [966819325] [2021-11-03 04:56:44,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [966819325] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:56:44,599 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:56:44,599 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-03 04:56:44,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734962912] [2021-11-03 04:56:44,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:56:44,600 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:56:44,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:56:44,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:56:44,601 INFO L87 Difference]: Start difference. First operand 139168 states and 246006 transitions. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 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 04:56:52,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:56:52,063 INFO L93 Difference]: Finished difference Result 553318 states and 978330 transitions. [2021-11-03 04:56:52,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:56:52,064 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 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 26 [2021-11-03 04:56:52,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:56:52,715 INFO L225 Difference]: With dead ends: 553318 [2021-11-03 04:56:52,715 INFO L226 Difference]: Without dead ends: 414152 [2021-11-03 04:56:52,819 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 48 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 04:56:53,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414152 states. [2021-11-03 04:56:57,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414152 to 274591. [2021-11-03 04:56:57,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274591 states, 274491 states have (on average 1.7719925243450605) internal successors, (486396), 274590 states have internal predecessors, (486396), 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 04:56:58,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274591 states to 274591 states and 486396 transitions. [2021-11-03 04:56:58,809 INFO L78 Accepts]: Start accepts. Automaton has 274591 states and 486396 transitions. Word has length 26 [2021-11-03 04:56:58,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:56:58,810 INFO L470 AbstractCegarLoop]: Abstraction has 274591 states and 486396 transitions. [2021-11-03 04:56:58,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 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 04:56:58,810 INFO L276 IsEmpty]: Start isEmpty. Operand 274591 states and 486396 transitions. [2021-11-03 04:56:58,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-03 04:56:58,811 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:56:58,811 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] [2021-11-03 04:56:58,829 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3591be3e-2fba-4136-8a4c-e2a3193fb7fb/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-03 04:56:59,012 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3591be3e-2fba-4136-8a4c-e2a3193fb7fb/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:56:59,012 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 97 more)] === [2021-11-03 04:56:59,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:56:59,013 INFO L85 PathProgramCache]: Analyzing trace with hash -1106895024, now seen corresponding path program 1 times [2021-11-03 04:56:59,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:56:59,014 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [55362815] [2021-11-03 04:56:59,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:56:59,014 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:56:59,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3591be3e-2fba-4136-8a4c-e2a3193fb7fb/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:56:59,014 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3591be3e-2fba-4136-8a4c-e2a3193fb7fb/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:56:59,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3591be3e-2fba-4136-8a4c-e2a3193fb7fb/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-03 04:56:59,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:56:59,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:56:59,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:56:59,652 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 04:56:59,652 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:56:59,932 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 04:56:59,933 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:56:59,933 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [55362815] [2021-11-03 04:56:59,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [55362815] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:56:59,933 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:56:59,933 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-03 04:56:59,934 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650801630] [2021-11-03 04:56:59,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:56:59,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:56:59,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:56:59,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:56:59,935 INFO L87 Difference]: Start difference. First operand 274591 states and 486396 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 3 states have internal predecessors, (55), 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 04:57:07,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:57:07,618 INFO L93 Difference]: Finished difference Result 818919 states and 1450496 transitions. [2021-11-03 04:57:07,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:57:07,619 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 3 states have internal predecessors, (55), 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 28 [2021-11-03 04:57:07,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:57:09,400 INFO L225 Difference]: With dead ends: 818919 [2021-11-03 04:57:09,400 INFO L226 Difference]: Without dead ends: 818913 [2021-11-03 04:57:09,513 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 52 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 04:57:10,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 818913 states. [2021-11-03 04:57:21,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 818913 to 817027. [2021-11-03 04:57:22,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 817027 states, 816927 states have (on average 1.7643314518922744) internal successors, (1441330), 817026 states have internal predecessors, (1441330), 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 04:57:25,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 817027 states to 817027 states and 1441330 transitions. [2021-11-03 04:57:25,903 INFO L78 Accepts]: Start accepts. Automaton has 817027 states and 1441330 transitions. Word has length 28 [2021-11-03 04:57:25,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:57:25,904 INFO L470 AbstractCegarLoop]: Abstraction has 817027 states and 1441330 transitions. [2021-11-03 04:57:25,904 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 3 states have internal predecessors, (55), 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 04:57:25,904 INFO L276 IsEmpty]: Start isEmpty. Operand 817027 states and 1441330 transitions. [2021-11-03 04:57:25,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-03 04:57:25,908 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:57:25,908 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] [2021-11-03 04:57:25,928 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3591be3e-2fba-4136-8a4c-e2a3193fb7fb/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-03 04:57:26,120 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3591be3e-2fba-4136-8a4c-e2a3193fb7fb/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:57:26,120 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 97 more)] === [2021-11-03 04:57:26,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:57:26,121 INFO L85 PathProgramCache]: Analyzing trace with hash 732401614, now seen corresponding path program 1 times [2021-11-03 04:57:26,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:57:26,121 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [805467977] [2021-11-03 04:57:26,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:57:26,122 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:57:26,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3591be3e-2fba-4136-8a4c-e2a3193fb7fb/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:57:26,122 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3591be3e-2fba-4136-8a4c-e2a3193fb7fb/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:57:26,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3591be3e-2fba-4136-8a4c-e2a3193fb7fb/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-03 04:57:26,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:57:26,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:57:26,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:57:26,768 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 04:57:26,769 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:57:27,027 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 04:57:27,027 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:57:27,027 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [805467977] [2021-11-03 04:57:27,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [805467977] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:57:27,027 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:57:27,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-03 04:57:27,028 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874059450] [2021-11-03 04:57:27,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 04:57:27,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:57:27,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 04:57:27,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:57:27,029 INFO L87 Difference]: Start difference. First operand 817027 states and 1441330 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 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 04:59:39,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:59:39,639 INFO L93 Difference]: Finished difference Result 5630125 states and 9778787 transitions. [2021-11-03 04:59:39,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-03 04:59:39,639 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 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 34 [2021-11-03 04:59:39,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:59:52,214 INFO L225 Difference]: With dead ends: 5630125 [2021-11-03 04:59:52,214 INFO L226 Difference]: Without dead ends: 4804550 [2021-11-03 04:59:53,265 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-11-03 04:59:57,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4804550 states.