./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/psyco/psyco_io_1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdcba2a0-65ba-4852-98b5-2f717bb1efe7/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdcba2a0-65ba-4852-98b5-2f717bb1efe7/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdcba2a0-65ba-4852-98b5-2f717bb1efe7/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdcba2a0-65ba-4852-98b5-2f717bb1efe7/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/psyco/psyco_io_1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdcba2a0-65ba-4852-98b5-2f717bb1efe7/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdcba2a0-65ba-4852-98b5-2f717bb1efe7/bin/utaipan-q2qaUkNPG8 --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 0e42a14d02446d341c51d21bb42c9bd175f1ebef .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 06:57:28,326 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 06:57:28,329 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 06:57:28,364 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 06:57:28,365 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 06:57:28,366 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 06:57:28,368 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 06:57:28,371 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 06:57:28,373 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 06:57:28,375 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 06:57:28,376 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 06:57:28,378 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 06:57:28,378 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 06:57:28,380 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 06:57:28,382 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 06:57:28,383 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 06:57:28,385 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 06:57:28,386 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 06:57:28,388 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 06:57:28,391 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 06:57:28,393 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 06:57:28,395 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 06:57:28,396 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 06:57:28,398 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 06:57:28,402 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 06:57:28,402 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 06:57:28,403 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 06:57:28,404 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 06:57:28,405 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 06:57:28,406 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 06:57:28,407 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 06:57:28,408 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 06:57:28,409 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 06:57:28,410 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 06:57:28,411 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 06:57:28,412 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 06:57:28,413 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 06:57:28,413 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 06:57:28,413 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 06:57:28,415 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 06:57:28,415 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 06:57:28,416 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdcba2a0-65ba-4852-98b5-2f717bb1efe7/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-13 06:57:28,444 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 06:57:28,445 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 06:57:28,446 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 06:57:28,446 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 06:57:28,446 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 06:57:28,447 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 06:57:28,447 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 06:57:28,447 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 06:57:28,447 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 06:57:28,448 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 06:57:28,448 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 06:57:28,448 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 06:57:28,448 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 06:57:28,449 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 06:57:28,449 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 06:57:28,450 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 06:57:28,450 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 06:57:28,450 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 06:57:28,450 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 06:57:28,451 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 06:57:28,451 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 06:57:28,451 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 06:57:28,451 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 06:57:28,452 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 06:57:28,452 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 06:57:28,452 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 06:57:28,452 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 06:57:28,453 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 06:57:28,453 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 06:57:28,453 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 06:57:28,454 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 06:57:28,454 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 06:57:28,454 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 06:57:28,454 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 06:57:28,455 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 06:57:28,455 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 06:57:28,455 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 06:57:28,455 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 06:57:28,456 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 06:57:28,456 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_bdcba2a0-65ba-4852-98b5-2f717bb1efe7/bin/utaipan-q2qaUkNPG8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdcba2a0-65ba-4852-98b5-2f717bb1efe7/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0e42a14d02446d341c51d21bb42c9bd175f1ebef [2021-10-13 06:57:28,737 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 06:57:28,765 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 06:57:28,769 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 06:57:28,772 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 06:57:28,773 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 06:57:28,774 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdcba2a0-65ba-4852-98b5-2f717bb1efe7/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/psyco/psyco_io_1.c [2021-10-13 06:57:28,865 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdcba2a0-65ba-4852-98b5-2f717bb1efe7/bin/utaipan-q2qaUkNPG8/data/d739bfa60/f4f7b6c6f1e940e78140a8389ac0eb1a/FLAGf487e5390 [2021-10-13 06:57:29,406 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 06:57:29,407 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdcba2a0-65ba-4852-98b5-2f717bb1efe7/sv-benchmarks/c/psyco/psyco_io_1.c [2021-10-13 06:57:29,427 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdcba2a0-65ba-4852-98b5-2f717bb1efe7/bin/utaipan-q2qaUkNPG8/data/d739bfa60/f4f7b6c6f1e940e78140a8389ac0eb1a/FLAGf487e5390 [2021-10-13 06:57:29,724 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdcba2a0-65ba-4852-98b5-2f717bb1efe7/bin/utaipan-q2qaUkNPG8/data/d739bfa60/f4f7b6c6f1e940e78140a8389ac0eb1a [2021-10-13 06:57:29,727 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 06:57:29,729 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 06:57:29,735 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 06:57:29,735 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 06:57:29,739 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 06:57:29,741 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:57:29" (1/1) ... [2021-10-13 06:57:29,743 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@141bec4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:57:29, skipping insertion in model container [2021-10-13 06:57:29,744 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:57:29" (1/1) ... [2021-10-13 06:57:29,753 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 06:57:29,797 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 06:57:30,029 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_bdcba2a0-65ba-4852-98b5-2f717bb1efe7/sv-benchmarks/c/psyco/psyco_io_1.c[11478,11491] [2021-10-13 06:57:30,035 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 06:57:30,046 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 06:57:30,088 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_bdcba2a0-65ba-4852-98b5-2f717bb1efe7/sv-benchmarks/c/psyco/psyco_io_1.c[11478,11491] [2021-10-13 06:57:30,090 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 06:57:30,107 INFO L208 MainTranslator]: Completed translation [2021-10-13 06:57:30,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:57:30 WrapperNode [2021-10-13 06:57:30,108 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 06:57:30,110 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 06:57:30,110 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 06:57:30,110 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 06:57:30,119 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:57:30" (1/1) ... [2021-10-13 06:57:30,129 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:57:30" (1/1) ... [2021-10-13 06:57:30,160 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 06:57:30,161 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 06:57:30,162 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 06:57:30,162 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 06:57:30,171 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:57:30" (1/1) ... [2021-10-13 06:57:30,172 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:57:30" (1/1) ... [2021-10-13 06:57:30,176 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:57:30" (1/1) ... [2021-10-13 06:57:30,176 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:57:30" (1/1) ... [2021-10-13 06:57:30,183 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:57:30" (1/1) ... [2021-10-13 06:57:30,190 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:57:30" (1/1) ... [2021-10-13 06:57:30,193 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:57:30" (1/1) ... [2021-10-13 06:57:30,196 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 06:57:30,197 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 06:57:30,198 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 06:57:30,198 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 06:57:30,212 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:57:30" (1/1) ... [2021-10-13 06:57:30,220 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 06:57:30,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdcba2a0-65ba-4852-98b5-2f717bb1efe7/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 06:57:30,249 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdcba2a0-65ba-4852-98b5-2f717bb1efe7/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 06:57:30,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdcba2a0-65ba-4852-98b5-2f717bb1efe7/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 06:57:30,291 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 06:57:30,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 06:57:30,293 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 06:57:30,294 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 06:57:30,815 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 06:57:30,815 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-10-13 06:57:30,819 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:57:30 BoogieIcfgContainer [2021-10-13 06:57:30,819 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 06:57:30,821 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 06:57:30,821 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 06:57:30,828 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 06:57:30,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:57:29" (1/3) ... [2021-10-13 06:57:30,831 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c4c1c09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:57:30, skipping insertion in model container [2021-10-13 06:57:30,831 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:57:30" (2/3) ... [2021-10-13 06:57:30,832 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c4c1c09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:57:30, skipping insertion in model container [2021-10-13 06:57:30,832 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:57:30" (3/3) ... [2021-10-13 06:57:30,834 INFO L111 eAbstractionObserver]: Analyzing ICFG psyco_io_1.c [2021-10-13 06:57:30,844 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 06:57:30,844 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 06:57:30,922 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 06:57:30,929 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, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 06:57:30,930 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 06:57:30,948 INFO L276 IsEmpty]: Start isEmpty. Operand has 66 states, 64 states have (on average 1.953125) internal successors, (125), 65 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:57:30,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-13 06:57:30,957 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:57:30,958 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:57:30,959 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 06:57:30,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:57:30,968 INFO L82 PathProgramCache]: Analyzing trace with hash -162000591, now seen corresponding path program 1 times [2021-10-13 06:57:30,991 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 06:57:30,992 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220393726] [2021-10-13 06:57:30,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:57:30,994 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 06:57:31,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:57:31,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:57:31,230 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 06:57:31,231 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220393726] [2021-10-13 06:57:31,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220393726] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 06:57:31,232 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:57:31,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 06:57:31,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266026423] [2021-10-13 06:57:31,240 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 06:57:31,240 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 06:57:31,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 06:57:31,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 06:57:31,257 INFO L87 Difference]: Start difference. First operand has 66 states, 64 states have (on average 1.953125) internal successors, (125), 65 states have internal predecessors, (125), 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 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:57:31,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:57:31,296 INFO L93 Difference]: Finished difference Result 127 states and 241 transitions. [2021-10-13 06:57:31,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 06:57:31,298 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 8 [2021-10-13 06:57:31,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:57:31,311 INFO L225 Difference]: With dead ends: 127 [2021-10-13 06:57:31,312 INFO L226 Difference]: Without dead ends: 56 [2021-10-13 06:57:31,317 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 06:57:31,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-10-13 06:57:31,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2021-10-13 06:57:31,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.5636363636363637) internal successors, (86), 55 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:57:31,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 86 transitions. [2021-10-13 06:57:31,366 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 86 transitions. Word has length 8 [2021-10-13 06:57:31,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:57:31,367 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 86 transitions. [2021-10-13 06:57:31,367 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:57:31,367 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 86 transitions. [2021-10-13 06:57:31,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-13 06:57:31,369 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:57:31,369 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:57:31,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 06:57:31,370 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 06:57:31,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:57:31,374 INFO L82 PathProgramCache]: Analyzing trace with hash -194557569, now seen corresponding path program 1 times [2021-10-13 06:57:31,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 06:57:31,375 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802270150] [2021-10-13 06:57:31,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:57:31,376 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 06:57:31,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:57:31,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:57:31,485 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 06:57:31,485 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802270150] [2021-10-13 06:57:31,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802270150] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 06:57:31,486 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:57:31,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 06:57:31,486 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825485731] [2021-10-13 06:57:31,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 06:57:31,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 06:57:31,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 06:57:31,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 06:57:31,489 INFO L87 Difference]: Start difference. First operand 56 states and 86 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:57:31,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:57:31,553 INFO L93 Difference]: Finished difference Result 114 states and 175 transitions. [2021-10-13 06:57:31,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 06:57:31,554 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 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 9 [2021-10-13 06:57:31,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:57:31,556 INFO L225 Difference]: With dead ends: 114 [2021-10-13 06:57:31,584 INFO L226 Difference]: Without dead ends: 59 [2021-10-13 06:57:31,585 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 06:57:31,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-10-13 06:57:31,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2021-10-13 06:57:31,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.5344827586206897) internal successors, (89), 58 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:57:31,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 89 transitions. [2021-10-13 06:57:31,603 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 89 transitions. Word has length 9 [2021-10-13 06:57:31,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:57:31,604 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 89 transitions. [2021-10-13 06:57:31,606 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:57:31,606 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 89 transitions. [2021-10-13 06:57:31,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-13 06:57:31,609 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:57:31,610 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:57:31,610 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 06:57:31,610 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 06:57:31,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:57:31,618 INFO L82 PathProgramCache]: Analyzing trace with hash -694410156, now seen corresponding path program 1 times [2021-10-13 06:57:31,619 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 06:57:31,619 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997975707] [2021-10-13 06:57:31,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:57:31,627 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 06:57:31,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:57:31,735 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:57:31,735 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 06:57:31,736 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997975707] [2021-10-13 06:57:31,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997975707] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 06:57:31,736 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:57:31,737 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 06:57:31,737 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418167650] [2021-10-13 06:57:31,737 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 06:57:31,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 06:57:31,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 06:57:31,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 06:57:31,739 INFO L87 Difference]: Start difference. First operand 59 states and 89 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:57:31,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:57:31,797 INFO L93 Difference]: Finished difference Result 122 states and 184 transitions. [2021-10-13 06:57:31,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 06:57:31,799 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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 [2021-10-13 06:57:31,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:57:31,800 INFO L225 Difference]: With dead ends: 122 [2021-10-13 06:57:31,801 INFO L226 Difference]: Without dead ends: 65 [2021-10-13 06:57:31,802 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 06:57:31,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-10-13 06:57:31,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 63. [2021-10-13 06:57:31,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.5) internal successors, (93), 62 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:57:31,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 93 transitions. [2021-10-13 06:57:31,811 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 93 transitions. Word has length 14 [2021-10-13 06:57:31,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:57:31,814 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 93 transitions. [2021-10-13 06:57:31,814 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:57:31,814 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 93 transitions. [2021-10-13 06:57:31,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-13 06:57:31,816 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:57:31,816 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:57:31,817 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-13 06:57:31,818 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 06:57:31,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:57:31,819 INFO L82 PathProgramCache]: Analyzing trace with hash 905287082, now seen corresponding path program 1 times [2021-10-13 06:57:31,819 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 06:57:31,820 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44867390] [2021-10-13 06:57:31,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:57:31,820 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 06:57:31,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:57:31,917 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:57:31,917 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 06:57:31,917 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44867390] [2021-10-13 06:57:31,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44867390] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 06:57:31,918 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:57:31,918 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 06:57:31,918 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228145090] [2021-10-13 06:57:31,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 06:57:31,919 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 06:57:31,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 06:57:31,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 06:57:31,920 INFO L87 Difference]: Start difference. First operand 63 states and 93 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:57:32,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:57:32,029 INFO L93 Difference]: Finished difference Result 181 states and 271 transitions. [2021-10-13 06:57:32,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 06:57:32,030 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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 19 [2021-10-13 06:57:32,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:57:32,033 INFO L225 Difference]: With dead ends: 181 [2021-10-13 06:57:32,033 INFO L226 Difference]: Without dead ends: 116 [2021-10-13 06:57:32,034 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 06:57:32,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-10-13 06:57:32,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 107. [2021-10-13 06:57:32,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 106 states have (on average 1.5) internal successors, (159), 106 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:57:32,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 159 transitions. [2021-10-13 06:57:32,051 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 159 transitions. Word has length 19 [2021-10-13 06:57:32,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:57:32,052 INFO L470 AbstractCegarLoop]: Abstraction has 107 states and 159 transitions. [2021-10-13 06:57:32,052 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:57:32,052 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 159 transitions. [2021-10-13 06:57:32,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-13 06:57:32,054 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:57:32,054 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:57:32,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-13 06:57:32,055 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 06:57:32,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:57:32,056 INFO L82 PathProgramCache]: Analyzing trace with hash 2500084, now seen corresponding path program 1 times [2021-10-13 06:57:32,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 06:57:32,057 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906468269] [2021-10-13 06:57:32,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:57:32,057 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 06:57:32,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:57:32,111 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-13 06:57:32,112 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 06:57:32,112 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906468269] [2021-10-13 06:57:32,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906468269] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 06:57:32,113 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:57:32,113 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 06:57:32,113 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954042158] [2021-10-13 06:57:32,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 06:57:32,114 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 06:57:32,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 06:57:32,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 06:57:32,116 INFO L87 Difference]: Start difference. First operand 107 states and 159 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 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) [2021-10-13 06:57:32,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:57:32,165 INFO L93 Difference]: Finished difference Result 177 states and 263 transitions. [2021-10-13 06:57:32,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 06:57:32,168 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 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 26 [2021-10-13 06:57:32,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:57:32,169 INFO L225 Difference]: With dead ends: 177 [2021-10-13 06:57:32,169 INFO L226 Difference]: Without dead ends: 72 [2021-10-13 06:57:32,171 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 06:57:32,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-10-13 06:57:32,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2021-10-13 06:57:32,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.408450704225352) internal successors, (100), 71 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:57:32,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 100 transitions. [2021-10-13 06:57:32,189 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 100 transitions. Word has length 26 [2021-10-13 06:57:32,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:57:32,189 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 100 transitions. [2021-10-13 06:57:32,190 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 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) [2021-10-13 06:57:32,190 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 100 transitions. [2021-10-13 06:57:32,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-13 06:57:32,193 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:57:32,193 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:57:32,194 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-13 06:57:32,194 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 06:57:32,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:57:32,196 INFO L82 PathProgramCache]: Analyzing trace with hash 1609281601, now seen corresponding path program 1 times [2021-10-13 06:57:32,197 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 06:57:32,197 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674551633] [2021-10-13 06:57:32,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:57:32,198 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 06:57:32,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:57:32,354 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-13 06:57:32,360 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 06:57:32,360 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674551633] [2021-10-13 06:57:32,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674551633] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 06:57:32,361 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:57:32,361 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 06:57:32,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571016264] [2021-10-13 06:57:32,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 06:57:32,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 06:57:32,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 06:57:32,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 06:57:32,369 INFO L87 Difference]: Start difference. First operand 72 states and 100 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:57:32,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:57:32,426 INFO L93 Difference]: Finished difference Result 75 states and 103 transitions. [2021-10-13 06:57:32,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 06:57:32,427 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 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 32 [2021-10-13 06:57:32,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:57:32,428 INFO L225 Difference]: With dead ends: 75 [2021-10-13 06:57:32,428 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 06:57:32,431 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 24.5ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 06:57:32,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 06:57:32,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 06:57:32,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:57:32,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 06:57:32,433 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 32 [2021-10-13 06:57:32,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:57:32,433 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 06:57:32,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:57:32,434 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 06:57:32,434 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 06:57:32,437 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 06:57:32,437 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-13 06:57:32,440 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-13 06:57:32,447 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 06:57:32,464 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 06:57:32,466 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 06:57:32,468 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 06:57:32,509 INFO L857 garLoopResultBuilder]: For program point L36(lines 36 51) no Hoare annotation was computed. [2021-10-13 06:57:32,509 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-13 06:57:32,509 INFO L857 garLoopResultBuilder]: For program point L38(lines 38 49) no Hoare annotation was computed. [2021-10-13 06:57:32,509 INFO L857 garLoopResultBuilder]: For program point L88(lines 88 103) no Hoare annotation was computed. [2021-10-13 06:57:32,510 INFO L857 garLoopResultBuilder]: For program point L55(lines 55 106) no Hoare annotation was computed. [2021-10-13 06:57:32,510 INFO L857 garLoopResultBuilder]: For program point L204(lines 204 219) no Hoare annotation was computed. [2021-10-13 06:57:32,510 INFO L857 garLoopResultBuilder]: For program point L72(lines 72 87) no Hoare annotation was computed. [2021-10-13 06:57:32,510 INFO L857 garLoopResultBuilder]: For program point L320(lines 320 335) no Hoare annotation was computed. [2021-10-13 06:57:32,510 INFO L857 garLoopResultBuilder]: For program point L188(lines 188 203) no Hoare annotation was computed. [2021-10-13 06:57:32,511 INFO L857 garLoopResultBuilder]: For program point L56(lines 56 71) no Hoare annotation was computed. [2021-10-13 06:57:32,511 INFO L853 garLoopResultBuilder]: At program point L337(lines 25 341) the Hoare annotation is: (or (and (= ULTIMATE.start_main_~q~0 2) (= ULTIMATE.start_main_~this_sink~0 0)) (= ULTIMATE.start_main_~q~0 0) (and (<= 3 ULTIMATE.start_main_~q~0) (or (<= 1 ULTIMATE.start_main_~this_sink~0) (<= (+ ULTIMATE.start_main_~this_sink~0 1) 0)))) [2021-10-13 06:57:32,511 INFO L857 garLoopResultBuilder]: For program point L304(lines 304 319) no Hoare annotation was computed. [2021-10-13 06:57:32,511 INFO L857 garLoopResultBuilder]: For program point L172(lines 172 187) no Hoare annotation was computed. [2021-10-13 06:57:32,512 INFO L857 garLoopResultBuilder]: For program point L288(lines 288 303) no Hoare annotation was computed. [2021-10-13 06:57:32,512 INFO L857 garLoopResultBuilder]: For program point L156(lines 156 171) no Hoare annotation was computed. [2021-10-13 06:57:32,512 INFO L857 garLoopResultBuilder]: For program point L90(lines 90 101) no Hoare annotation was computed. [2021-10-13 06:57:32,512 INFO L857 garLoopResultBuilder]: For program point L272(lines 272 287) no Hoare annotation was computed. [2021-10-13 06:57:32,512 INFO L857 garLoopResultBuilder]: For program point L206(lines 206 217) no Hoare annotation was computed. [2021-10-13 06:57:32,513 INFO L857 garLoopResultBuilder]: For program point L140(lines 140 155) no Hoare annotation was computed. [2021-10-13 06:57:32,513 INFO L857 garLoopResultBuilder]: For program point L107(lines 107 222) no Hoare annotation was computed. [2021-10-13 06:57:32,513 INFO L857 garLoopResultBuilder]: For program point L74(lines 74 85) no Hoare annotation was computed. [2021-10-13 06:57:32,513 INFO L857 garLoopResultBuilder]: For program point L322(lines 322 333) no Hoare annotation was computed. [2021-10-13 06:57:32,513 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-13 06:57:32,514 INFO L857 garLoopResultBuilder]: For program point L256(lines 256 271) no Hoare annotation was computed. [2021-10-13 06:57:32,514 INFO L857 garLoopResultBuilder]: For program point L223(lines 223 338) no Hoare annotation was computed. [2021-10-13 06:57:32,514 INFO L857 garLoopResultBuilder]: For program point L190(lines 190 201) no Hoare annotation was computed. [2021-10-13 06:57:32,514 INFO L857 garLoopResultBuilder]: For program point L124(lines 124 139) no Hoare annotation was computed. [2021-10-13 06:57:32,514 INFO L857 garLoopResultBuilder]: For program point L58(lines 58 69) no Hoare annotation was computed. [2021-10-13 06:57:32,515 INFO L853 garLoopResultBuilder]: At program point L25-2(lines 25 341) the Hoare annotation is: (or (and (= ULTIMATE.start_main_~q~0 0) (= ULTIMATE.start_main_~this_sink~0 0)) (and (<= 3 ULTIMATE.start_main_~q~0) (or (<= 1 ULTIMATE.start_main_~this_sink~0) (<= (+ ULTIMATE.start_main_~this_sink~0 1) 0)))) [2021-10-13 06:57:32,515 INFO L857 garLoopResultBuilder]: For program point L25-3(lines 25 341) no Hoare annotation was computed. [2021-10-13 06:57:32,515 INFO L857 garLoopResultBuilder]: For program point L306(lines 306 317) no Hoare annotation was computed. [2021-10-13 06:57:32,515 INFO L857 garLoopResultBuilder]: For program point L240(lines 240 255) no Hoare annotation was computed. [2021-10-13 06:57:32,515 INFO L857 garLoopResultBuilder]: For program point L174(lines 174 185) no Hoare annotation was computed. [2021-10-13 06:57:32,516 INFO L857 garLoopResultBuilder]: For program point L108(lines 108 123) no Hoare annotation was computed. [2021-10-13 06:57:32,516 INFO L857 garLoopResultBuilder]: For program point L42(lines 42 44) no Hoare annotation was computed. [2021-10-13 06:57:32,516 INFO L857 garLoopResultBuilder]: For program point L290(lines 290 301) no Hoare annotation was computed. [2021-10-13 06:57:32,516 INFO L857 garLoopResultBuilder]: For program point L224(lines 224 239) no Hoare annotation was computed. [2021-10-13 06:57:32,516 INFO L857 garLoopResultBuilder]: For program point L158(lines 158 169) no Hoare annotation was computed. [2021-10-13 06:57:32,517 INFO L857 garLoopResultBuilder]: For program point L274(lines 274 285) no Hoare annotation was computed. [2021-10-13 06:57:32,517 INFO L857 garLoopResultBuilder]: For program point L142(lines 142 153) no Hoare annotation was computed. [2021-10-13 06:57:32,517 INFO L857 garLoopResultBuilder]: For program point L258(lines 258 269) no Hoare annotation was computed. [2021-10-13 06:57:32,517 INFO L857 garLoopResultBuilder]: For program point L126(lines 126 137) no Hoare annotation was computed. [2021-10-13 06:57:32,517 INFO L857 garLoopResultBuilder]: For program point L242(lines 242 253) no Hoare annotation was computed. [2021-10-13 06:57:32,518 INFO L857 garLoopResultBuilder]: For program point L110(lines 110 121) no Hoare annotation was computed. [2021-10-13 06:57:32,518 INFO L857 garLoopResultBuilder]: For program point L226(lines 226 237) no Hoare annotation was computed. [2021-10-13 06:57:32,518 INFO L857 garLoopResultBuilder]: For program point L94(lines 94 96) no Hoare annotation was computed. [2021-10-13 06:57:32,518 INFO L857 garLoopResultBuilder]: For program point L210(lines 210 212) no Hoare annotation was computed. [2021-10-13 06:57:32,518 INFO L857 garLoopResultBuilder]: For program point L78(lines 78 80) no Hoare annotation was computed. [2021-10-13 06:57:32,519 INFO L857 garLoopResultBuilder]: For program point L326(lines 326 328) no Hoare annotation was computed. [2021-10-13 06:57:32,519 INFO L857 garLoopResultBuilder]: For program point L194(lines 194 196) no Hoare annotation was computed. [2021-10-13 06:57:32,519 INFO L857 garLoopResultBuilder]: For program point L62(lines 62 64) no Hoare annotation was computed. [2021-10-13 06:57:32,519 INFO L857 garLoopResultBuilder]: For program point L310(lines 310 312) no Hoare annotation was computed. [2021-10-13 06:57:32,519 INFO L857 garLoopResultBuilder]: For program point L178(lines 178 180) no Hoare annotation was computed. [2021-10-13 06:57:32,520 INFO L853 garLoopResultBuilder]: At program point L327(lines 15 346) the Hoare annotation is: false [2021-10-13 06:57:32,520 INFO L857 garLoopResultBuilder]: For program point L294(lines 294 296) no Hoare annotation was computed. [2021-10-13 06:57:32,520 INFO L857 garLoopResultBuilder]: For program point L162(lines 162 164) no Hoare annotation was computed. [2021-10-13 06:57:32,520 INFO L857 garLoopResultBuilder]: For program point L278(lines 278 280) no Hoare annotation was computed. [2021-10-13 06:57:32,520 INFO L857 garLoopResultBuilder]: For program point L146(lines 146 148) no Hoare annotation was computed. [2021-10-13 06:57:32,521 INFO L857 garLoopResultBuilder]: For program point L262(lines 262 264) no Hoare annotation was computed. [2021-10-13 06:57:32,521 INFO L857 garLoopResultBuilder]: For program point L130(lines 130 132) no Hoare annotation was computed. [2021-10-13 06:57:32,521 INFO L857 garLoopResultBuilder]: For program point L246(lines 246 248) no Hoare annotation was computed. [2021-10-13 06:57:32,521 INFO L857 garLoopResultBuilder]: For program point L114(lines 114 116) no Hoare annotation was computed. [2021-10-13 06:57:32,521 INFO L860 garLoopResultBuilder]: At program point L15(lines 15 346) the Hoare annotation is: true [2021-10-13 06:57:32,521 INFO L857 garLoopResultBuilder]: For program point L230(lines 230 232) no Hoare annotation was computed. [2021-10-13 06:57:32,522 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 345) no Hoare annotation was computed. [2021-10-13 06:57:32,522 INFO L857 garLoopResultBuilder]: For program point L35(lines 35 54) no Hoare annotation was computed. [2021-10-13 06:57:32,527 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 06:57:32,543 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 06:57:32 BoogieIcfgContainer [2021-10-13 06:57:32,543 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 06:57:32,544 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 06:57:32,544 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 06:57:32,544 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 06:57:32,545 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:57:30" (3/4) ... [2021-10-13 06:57:32,548 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 06:57:32,564 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-13 06:57:32,578 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-13 06:57:32,578 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 06:57:32,578 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 06:57:32,629 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdcba2a0-65ba-4852-98b5-2f717bb1efe7/bin/utaipan-q2qaUkNPG8/witness.graphml [2021-10-13 06:57:32,629 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 06:57:32,631 INFO L168 Benchmark]: Toolchain (without parser) took 2900.98 ms. Allocated memory was 109.1 MB in the beginning and 140.5 MB in the end (delta: 31.5 MB). Free memory was 65.9 MB in the beginning and 74.3 MB in the end (delta: -8.4 MB). Peak memory consumption was 22.8 MB. Max. memory is 16.1 GB. [2021-10-13 06:57:32,632 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 109.1 MB. Free memory was 82.5 MB in the beginning and 82.5 MB in the end (delta: 55.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 06:57:32,632 INFO L168 Benchmark]: CACSL2BoogieTranslator took 374.03 ms. Allocated memory is still 109.1 MB. Free memory was 65.7 MB in the beginning and 81.6 MB in the end (delta: -15.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 06:57:32,633 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.99 ms. Allocated memory is still 109.1 MB. Free memory was 81.6 MB in the beginning and 79.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 06:57:32,634 INFO L168 Benchmark]: Boogie Preprocessor took 35.14 ms. Allocated memory is still 109.1 MB. Free memory was 79.6 MB in the beginning and 78.1 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 06:57:32,634 INFO L168 Benchmark]: RCFGBuilder took 621.64 ms. Allocated memory is still 109.1 MB. Free memory was 77.8 MB in the beginning and 61.9 MB in the end (delta: 15.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-13 06:57:32,635 INFO L168 Benchmark]: TraceAbstraction took 1722.59 ms. Allocated memory was 109.1 MB in the beginning and 140.5 MB in the end (delta: 31.5 MB). Free memory was 61.3 MB in the beginning and 76.5 MB in the end (delta: -15.2 MB). Peak memory consumption was 18.6 MB. Max. memory is 16.1 GB. [2021-10-13 06:57:32,636 INFO L168 Benchmark]: Witness Printer took 85.45 ms. Allocated memory is still 140.5 MB. Free memory was 76.5 MB in the beginning and 74.3 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 06:57:32,640 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 109.1 MB. Free memory was 82.5 MB in the beginning and 82.5 MB in the end (delta: 55.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 374.03 ms. Allocated memory is still 109.1 MB. Free memory was 65.7 MB in the beginning and 81.6 MB in the end (delta: -15.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 50.99 ms. Allocated memory is still 109.1 MB. Free memory was 81.6 MB in the beginning and 79.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 35.14 ms. Allocated memory is still 109.1 MB. Free memory was 79.6 MB in the beginning and 78.1 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 621.64 ms. Allocated memory is still 109.1 MB. Free memory was 77.8 MB in the beginning and 61.9 MB in the end (delta: 15.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1722.59 ms. Allocated memory was 109.1 MB in the beginning and 140.5 MB in the end (delta: 31.5 MB). Free memory was 61.3 MB in the beginning and 76.5 MB in the end (delta: -15.2 MB). Peak memory consumption was 18.6 MB. Max. memory is 16.1 GB. * Witness Printer took 85.45 ms. Allocated memory is still 140.5 MB. Free memory was 76.5 MB in the beginning and 74.3 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 345]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 66 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1607.1ms, OverallIterations: 6, TraceHistogramMax: 3, EmptinessCheckTime: 24.6ms, AutomataDifference: 475.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 70.4ms, InitialAbstractionConstructionTime: 13.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 508 SDtfs, 140 SDslu, 277 SDs, 0 SdLazy, 83 SolverSat, 35 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 164.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 46.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=107occurred in iteration=4, InterpolantAutomatonStates: 19, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 95.8ms AutomataMinimizationTime, 6 MinimizatonAttempts, 11 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 12 NumberOfFragments, 47 HoareAnnotationTreeSize, 4 FomulaSimplifications, 45 FormulaSimplificationTreeSizeReduction, 33.2ms HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 26.0ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 63.2ms SsaConstructionTime, 209.8ms SatisfiabilityAnalysisTime, 377.5ms InterpolantComputationTime, 108 NumberOfCodeBlocks, 108 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 102 ConstructedInterpolants, 0 QuantifiedInterpolants, 246 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 19/19 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: (q == 0 && this_sink == 0) || (3 <= q && (1 <= this_sink || this_sink + 1 <= 0)) - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: ((q == 2 && this_sink == 0) || q == 0) || (3 <= q && (1 <= this_sink || this_sink + 1 <= 0)) RESULT: Ultimate proved your program to be correct! [2021-10-13 06:57:32,726 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdcba2a0-65ba-4852-98b5-2f717bb1efe7/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...