./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/goblint-regression/13-privatized_29-multiple-protecting2-vesal_true.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab03b2c8-853a-4cb0-be39-521bf8540545/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab03b2c8-853a-4cb0-be39-521bf8540545/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab03b2c8-853a-4cb0-be39-521bf8540545/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab03b2c8-853a-4cb0-be39-521bf8540545/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/goblint-regression/13-privatized_29-multiple-protecting2-vesal_true.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab03b2c8-853a-4cb0-be39-521bf8540545/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab03b2c8-853a-4cb0-be39-521bf8540545/bin/utaipan-UbGMyvGFUs --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 a900e47bcb0579a731ecfed3c71b01054e5f0917c7f65049265d17494d326436 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:28:06,321 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:28:06,325 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:28:06,387 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:28:06,388 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:28:06,394 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:28:06,396 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:28:06,401 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:28:06,404 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:28:06,412 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:28:06,413 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:28:06,415 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:28:06,416 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:28:06,419 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:28:06,421 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:28:06,428 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:28:06,430 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:28:06,431 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:28:06,434 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:28:06,444 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:28:06,447 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:28:06,449 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:28:06,450 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:28:06,451 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:28:06,455 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:28:06,456 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:28:06,456 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:28:06,457 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:28:06,458 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:28:06,459 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:28:06,459 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:28:06,460 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:28:06,461 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:28:06,463 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:28:06,464 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:28:06,465 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:28:06,465 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:28:06,466 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:28:06,466 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:28:06,467 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:28:06,468 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:28:06,469 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab03b2c8-853a-4cb0-be39-521bf8540545/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-19 14:28:06,502 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:28:06,504 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:28:06,506 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:28:06,507 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:28:06,507 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:28:06,507 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:28:06,507 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:28:06,508 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 14:28:06,508 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:28:06,508 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:28:06,509 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 14:28:06,510 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 14:28:06,510 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:28:06,510 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 14:28:06,510 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 14:28:06,511 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 14:28:06,511 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:28:06,512 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 14:28:06,512 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 14:28:06,512 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 14:28:06,512 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:28:06,513 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:28:06,513 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:28:06,513 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:28:06,513 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:28:06,513 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 14:28:06,514 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:28:06,514 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:28:06,514 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:28:06,514 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:28:06,515 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:28:06,515 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:28:06,515 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:28:06,516 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:28:06,516 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:28:06,516 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 14:28:06,516 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 14:28:06,516 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:28:06,517 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:28:06,517 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:28:06,517 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_ab03b2c8-853a-4cb0-be39-521bf8540545/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab03b2c8-853a-4cb0-be39-521bf8540545/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a900e47bcb0579a731ecfed3c71b01054e5f0917c7f65049265d17494d326436 [2021-11-19 14:28:06,878 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:28:06,902 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:28:06,905 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:28:06,906 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:28:06,907 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:28:06,909 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab03b2c8-853a-4cb0-be39-521bf8540545/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/goblint-regression/13-privatized_29-multiple-protecting2-vesal_true.i [2021-11-19 14:28:06,982 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab03b2c8-853a-4cb0-be39-521bf8540545/bin/utaipan-UbGMyvGFUs/data/36bd6dff9/e99eae93ab8f4537b3eef4a3a5be0b14/FLAG15aaff70e [2021-11-19 14:28:07,563 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:28:07,569 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab03b2c8-853a-4cb0-be39-521bf8540545/sv-benchmarks/c/goblint-regression/13-privatized_29-multiple-protecting2-vesal_true.i [2021-11-19 14:28:07,588 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab03b2c8-853a-4cb0-be39-521bf8540545/bin/utaipan-UbGMyvGFUs/data/36bd6dff9/e99eae93ab8f4537b3eef4a3a5be0b14/FLAG15aaff70e [2021-11-19 14:28:07,827 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab03b2c8-853a-4cb0-be39-521bf8540545/bin/utaipan-UbGMyvGFUs/data/36bd6dff9/e99eae93ab8f4537b3eef4a3a5be0b14 [2021-11-19 14:28:07,830 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:28:07,832 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:28:07,846 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:28:07,846 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:28:07,849 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:28:07,849 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:28:07" (1/1) ... [2021-11-19 14:28:07,851 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e667238 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:28:07, skipping insertion in model container [2021-11-19 14:28:07,851 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:28:07" (1/1) ... [2021-11-19 14:28:07,859 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:28:07,934 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:28:08,157 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab03b2c8-853a-4cb0-be39-521bf8540545/sv-benchmarks/c/goblint-regression/13-privatized_29-multiple-protecting2-vesal_true.i[1103,1116] [2021-11-19 14:28:08,346 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:28:08,367 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 14:28:08,387 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab03b2c8-853a-4cb0-be39-521bf8540545/sv-benchmarks/c/goblint-regression/13-privatized_29-multiple-protecting2-vesal_true.i[1103,1116] [2021-11-19 14:28:08,459 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:28:08,522 INFO L208 MainTranslator]: Completed translation [2021-11-19 14:28:08,522 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:28:08 WrapperNode [2021-11-19 14:28:08,523 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:28:08,524 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 14:28:08,524 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 14:28:08,524 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 14:28:08,535 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:28:08" (1/1) ... [2021-11-19 14:28:08,577 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:28:08" (1/1) ... [2021-11-19 14:28:08,604 INFO L137 Inliner]: procedures = 162, calls = 40, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 74 [2021-11-19 14:28:08,604 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 14:28:08,605 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 14:28:08,605 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 14:28:08,606 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 14:28:08,616 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:28:08" (1/1) ... [2021-11-19 14:28:08,616 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:28:08" (1/1) ... [2021-11-19 14:28:08,620 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:28:08" (1/1) ... [2021-11-19 14:28:08,620 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:28:08" (1/1) ... [2021-11-19 14:28:08,626 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:28:08" (1/1) ... [2021-11-19 14:28:08,629 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:28:08" (1/1) ... [2021-11-19 14:28:08,631 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:28:08" (1/1) ... [2021-11-19 14:28:08,635 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 14:28:08,636 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 14:28:08,636 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 14:28:08,636 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 14:28:08,638 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:28:08" (1/1) ... [2021-11-19 14:28:08,647 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:28:08,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab03b2c8-853a-4cb0-be39-521bf8540545/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:28:08,683 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab03b2c8-853a-4cb0-be39-521bf8540545/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 14:28:08,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab03b2c8-853a-4cb0-be39-521bf8540545/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 14:28:08,744 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-19 14:28:08,744 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2021-11-19 14:28:08,745 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2021-11-19 14:28:08,745 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-19 14:28:08,746 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-11-19 14:28:08,746 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 14:28:08,746 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 14:28:08,746 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 14:28:08,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-19 14:28:08,746 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 14:28:08,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 14:28:08,748 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-19 14:28:08,897 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 14:28:08,899 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 14:28:09,137 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 14:28:09,146 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 14:28:09,147 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-19 14:28:09,149 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:28:09 BoogieIcfgContainer [2021-11-19 14:28:09,149 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 14:28:09,151 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 14:28:09,151 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 14:28:09,155 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 14:28:09,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 02:28:07" (1/3) ... [2021-11-19 14:28:09,155 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c758a7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:28:09, skipping insertion in model container [2021-11-19 14:28:09,156 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:28:08" (2/3) ... [2021-11-19 14:28:09,156 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c758a7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:28:09, skipping insertion in model container [2021-11-19 14:28:09,156 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:28:09" (3/3) ... [2021-11-19 14:28:09,157 INFO L111 eAbstractionObserver]: Analyzing ICFG 13-privatized_29-multiple-protecting2-vesal_true.i [2021-11-19 14:28:09,161 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-19 14:28:09,161 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 14:28:09,162 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-19 14:28:09,162 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-19 14:28:09,192 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:28:09,192 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:28:09,193 WARN L322 ript$VariableManager]: TermVariabe t2_funThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:28:09,193 WARN L322 ript$VariableManager]: TermVariabe t2_funThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:28:09,193 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:28:09,193 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:28:09,194 WARN L322 ript$VariableManager]: TermVariabe t2_funThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:28:09,194 WARN L322 ript$VariableManager]: TermVariabe t2_funThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:28:09,194 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#t~nondet1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:28:09,194 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#t~nondet1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:28:09,195 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#t~nondet1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:28:09,195 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#t~nondet1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:28:09,195 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:28:09,195 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:28:09,196 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:28:09,196 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:28:09,196 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:28:09,196 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:28:09,196 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:28:09,197 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:28:09,197 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:28:09,197 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:28:09,197 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:28:09,198 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:28:09,198 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:28:09,198 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:28:09,198 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:28:09,199 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:28:09,199 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:28:09,199 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:28:09,199 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:28:09,199 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:28:09,200 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:28:09,200 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:28:09,200 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:28:09,200 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:28:09,204 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:28:09,204 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:28:09,204 WARN L322 ript$VariableManager]: TermVariabe t2_funThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:28:09,205 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:28:09,205 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:28:09,205 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#t~nondet1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:28:09,205 WARN L322 ript$VariableManager]: TermVariabe t2_funThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:28:09,205 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:28:09,206 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:28:09,210 INFO L148 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2021-11-19 14:28:09,293 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 14:28:09,310 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 [2021-11-19 14:28:09,311 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-19 14:28:09,341 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-11-19 14:28:09,371 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 109 places, 108 transitions, 224 flow [2021-11-19 14:28:09,374 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 109 places, 108 transitions, 224 flow [2021-11-19 14:28:09,376 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 109 places, 108 transitions, 224 flow [2021-11-19 14:28:09,459 INFO L129 PetriNetUnfolder]: 3/107 cut-off events. [2021-11-19 14:28:09,460 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-11-19 14:28:09,464 INFO L84 FinitePrefix]: Finished finitePrefix Result has 112 conditions, 107 events. 3/107 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 69 event pairs, 0 based on Foata normal form. 0/101 useless extension candidates. Maximal degree in co-relation 63. Up to 2 conditions per place. [2021-11-19 14:28:09,469 INFO L116 LiptonReduction]: Number of co-enabled transitions 1620 [2021-11-19 14:28:15,657 INFO L131 LiptonReduction]: Checked pairs total: 4406 [2021-11-19 14:28:15,658 INFO L133 LiptonReduction]: Total number of compositions: 100 [2021-11-19 14:28:15,667 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 30 transitions, 68 flow [2021-11-19 14:28:15,684 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 110 states, 106 states have (on average 2.0283018867924527) internal successors, (215), 109 states have internal predecessors, (215), 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) [2021-11-19 14:28:15,687 INFO L276 IsEmpty]: Start isEmpty. Operand has 110 states, 106 states have (on average 2.0283018867924527) internal successors, (215), 109 states have internal predecessors, (215), 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) [2021-11-19 14:28:15,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-19 14:28:15,692 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:28:15,693 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-19 14:28:15,693 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 14:28:15,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:28:15,700 INFO L85 PathProgramCache]: Analyzing trace with hash 11631578, now seen corresponding path program 1 times [2021-11-19 14:28:15,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:28:15,710 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503848726] [2021-11-19 14:28:15,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:28:15,711 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:28:15,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:28:15,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:28:15,910 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:28:15,910 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503848726] [2021-11-19 14:28:15,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503848726] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:28:15,912 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:28:15,912 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-19 14:28:15,914 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964336543] [2021-11-19 14:28:15,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:28:15,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-19 14:28:15,921 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:28:15,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-19 14:28:15,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 14:28:15,952 INFO L87 Difference]: Start difference. First operand has 110 states, 106 states have (on average 2.0283018867924527) internal successors, (215), 109 states have internal predecessors, (215), 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 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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) [2021-11-19 14:28:16,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:28:16,041 INFO L93 Difference]: Finished difference Result 110 states and 197 transitions. [2021-11-19 14:28:16,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 14:28:16,044 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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 4 [2021-11-19 14:28:16,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:28:16,061 INFO L225 Difference]: With dead ends: 110 [2021-11-19 14:28:16,061 INFO L226 Difference]: Without dead ends: 101 [2021-11-19 14:28:16,063 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 14:28:16,070 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:28:16,072 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:28:16,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2021-11-19 14:28:16,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2021-11-19 14:28:16,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 98 states have (on average 1.836734693877551) internal successors, (180), 100 states have internal predecessors, (180), 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) [2021-11-19 14:28:16,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 180 transitions. [2021-11-19 14:28:16,145 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 180 transitions. Word has length 4 [2021-11-19 14:28:16,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:28:16,146 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 180 transitions. [2021-11-19 14:28:16,146 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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) [2021-11-19 14:28:16,148 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 180 transitions. [2021-11-19 14:28:16,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-19 14:28:16,149 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:28:16,149 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-19 14:28:16,150 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-19 14:28:16,151 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 14:28:16,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:28:16,155 INFO L85 PathProgramCache]: Analyzing trace with hash 360536495, now seen corresponding path program 1 times [2021-11-19 14:28:16,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:28:16,161 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757114544] [2021-11-19 14:28:16,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:28:16,162 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:28:16,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:28:16,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:28:16,286 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:28:16,286 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757114544] [2021-11-19 14:28:16,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757114544] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:28:16,287 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:28:16,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-19 14:28:16,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583730326] [2021-11-19 14:28:16,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:28:16,289 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:28:16,289 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:28:16,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:28:16,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:28:16,290 INFO L87 Difference]: Start difference. First operand 101 states and 180 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2021-11-19 14:28:16,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:28:16,339 INFO L93 Difference]: Finished difference Result 95 states and 168 transitions. [2021-11-19 14:28:16,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:28:16,340 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 5 [2021-11-19 14:28:16,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:28:16,341 INFO L225 Difference]: With dead ends: 95 [2021-11-19 14:28:16,342 INFO L226 Difference]: Without dead ends: 95 [2021-11-19 14:28:16,342 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:28:16,348 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 11 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:28:16,349 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 0 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:28:16,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-11-19 14:28:16,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2021-11-19 14:28:16,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 92 states have (on average 1.826086956521739) internal successors, (168), 94 states have internal predecessors, (168), 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) [2021-11-19 14:28:16,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 168 transitions. [2021-11-19 14:28:16,360 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 168 transitions. Word has length 5 [2021-11-19 14:28:16,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:28:16,361 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 168 transitions. [2021-11-19 14:28:16,361 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2021-11-19 14:28:16,361 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 168 transitions. [2021-11-19 14:28:16,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-19 14:28:16,366 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:28:16,366 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:28:16,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-19 14:28:16,367 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 14:28:16,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:28:16,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1416783119, now seen corresponding path program 1 times [2021-11-19 14:28:16,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:28:16,375 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214879814] [2021-11-19 14:28:16,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:28:16,379 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:28:16,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:28:16,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:28:16,539 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:28:16,539 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214879814] [2021-11-19 14:28:16,540 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214879814] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:28:16,540 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:28:16,540 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-19 14:28:16,540 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026411020] [2021-11-19 14:28:16,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:28:16,541 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:28:16,541 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:28:16,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:28:16,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:28:16,542 INFO L87 Difference]: Start difference. First operand 95 states and 168 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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) [2021-11-19 14:28:16,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:28:16,657 INFO L93 Difference]: Finished difference Result 98 states and 173 transitions. [2021-11-19 14:28:16,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:28:16,657 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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 7 [2021-11-19 14:28:16,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:28:16,669 INFO L225 Difference]: With dead ends: 98 [2021-11-19 14:28:16,669 INFO L226 Difference]: Without dead ends: 98 [2021-11-19 14:28:16,670 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 14:28:16,672 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 21 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:28:16,675 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 0 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:28:16,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-11-19 14:28:16,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2021-11-19 14:28:16,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 95 states have (on average 1.8210526315789475) internal successors, (173), 97 states have internal predecessors, (173), 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) [2021-11-19 14:28:16,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 173 transitions. [2021-11-19 14:28:16,694 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 173 transitions. Word has length 7 [2021-11-19 14:28:16,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:28:16,694 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 173 transitions. [2021-11-19 14:28:16,694 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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) [2021-11-19 14:28:16,695 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 173 transitions. [2021-11-19 14:28:16,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-19 14:28:16,696 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:28:16,696 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:28:16,696 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-19 14:28:16,697 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 14:28:16,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:28:16,697 INFO L85 PathProgramCache]: Analyzing trace with hash 902588307, now seen corresponding path program 1 times [2021-11-19 14:28:16,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:28:16,698 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308934248] [2021-11-19 14:28:16,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:28:16,698 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:28:16,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:28:16,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:28:16,796 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:28:16,796 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308934248] [2021-11-19 14:28:16,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308934248] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:28:16,797 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:28:16,797 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 14:28:16,798 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986041048] [2021-11-19 14:28:16,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:28:16,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:28:16,799 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:28:16,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:28:16,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:28:16,800 INFO L87 Difference]: Start difference. First operand 98 states and 173 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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) [2021-11-19 14:28:16,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:28:16,854 INFO L93 Difference]: Finished difference Result 75 states and 105 transitions. [2021-11-19 14:28:16,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:28:16,854 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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 10 [2021-11-19 14:28:16,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:28:16,855 INFO L225 Difference]: With dead ends: 75 [2021-11-19 14:28:16,855 INFO L226 Difference]: Without dead ends: 75 [2021-11-19 14:28:16,856 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:28:16,857 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 6 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:28:16,858 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 0 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:28:16,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-11-19 14:28:16,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 68. [2021-11-19 14:28:16,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 62 states have (on average 1.596774193548387) internal successors, (99), 67 states have internal predecessors, (99), 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) [2021-11-19 14:28:16,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 99 transitions. [2021-11-19 14:28:16,865 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 99 transitions. Word has length 10 [2021-11-19 14:28:16,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:28:16,866 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 99 transitions. [2021-11-19 14:28:16,866 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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) [2021-11-19 14:28:16,866 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 99 transitions. [2021-11-19 14:28:16,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-19 14:28:16,867 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:28:16,867 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:28:16,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-19 14:28:16,867 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 14:28:16,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:28:16,868 INFO L85 PathProgramCache]: Analyzing trace with hash -741582128, now seen corresponding path program 1 times [2021-11-19 14:28:16,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:28:16,868 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063644351] [2021-11-19 14:28:16,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:28:16,869 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:28:16,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:28:16,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:28:16,918 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:28:16,918 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063644351] [2021-11-19 14:28:16,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063644351] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:28:16,918 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:28:16,918 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-19 14:28:16,918 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908973293] [2021-11-19 14:28:16,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:28:16,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:28:16,919 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:28:16,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:28:16,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:28:16,920 INFO L87 Difference]: Start difference. First operand 68 states and 99 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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) [2021-11-19 14:28:16,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:28:16,956 INFO L93 Difference]: Finished difference Result 66 states and 96 transitions. [2021-11-19 14:28:16,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:28:16,957 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 10 [2021-11-19 14:28:16,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:28:16,958 INFO L225 Difference]: With dead ends: 66 [2021-11-19 14:28:16,958 INFO L226 Difference]: Without dead ends: 64 [2021-11-19 14:28:16,958 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:28:16,959 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:28:16,960 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 0 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:28:16,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-11-19 14:28:16,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2021-11-19 14:28:16,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 59 states have (on average 1.576271186440678) internal successors, (93), 63 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) [2021-11-19 14:28:16,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 93 transitions. [2021-11-19 14:28:16,967 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 93 transitions. Word has length 10 [2021-11-19 14:28:16,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:28:16,967 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 93 transitions. [2021-11-19 14:28:16,967 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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) [2021-11-19 14:28:16,967 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 93 transitions. [2021-11-19 14:28:16,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-19 14:28:16,968 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:28:16,968 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:28:16,968 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-19 14:28:16,968 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 14:28:16,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:28:16,969 INFO L85 PathProgramCache]: Analyzing trace with hash -907405682, now seen corresponding path program 1 times [2021-11-19 14:28:16,969 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:28:16,969 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796853590] [2021-11-19 14:28:16,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:28:16,970 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:28:17,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:28:17,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:28:17,059 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:28:17,060 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796853590] [2021-11-19 14:28:17,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796853590] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:28:17,060 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:28:17,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 14:28:17,061 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809890858] [2021-11-19 14:28:17,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:28:17,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:28:17,061 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:28:17,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:28:17,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 14:28:17,064 INFO L87 Difference]: Start difference. First operand 64 states and 93 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2021-11-19 14:28:17,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:28:17,156 INFO L93 Difference]: Finished difference Result 61 states and 89 transitions. [2021-11-19 14:28:17,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:28:17,158 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 11 [2021-11-19 14:28:17,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:28:17,159 INFO L225 Difference]: With dead ends: 61 [2021-11-19 14:28:17,159 INFO L226 Difference]: Without dead ends: 61 [2021-11-19 14:28:17,159 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:28:17,164 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 28 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:28:17,164 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 0 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:28:17,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-11-19 14:28:17,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2021-11-19 14:28:17,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 58 states have (on average 1.5344827586206897) internal successors, (89), 60 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) [2021-11-19 14:28:17,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 89 transitions. [2021-11-19 14:28:17,182 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 89 transitions. Word has length 11 [2021-11-19 14:28:17,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:28:17,182 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 89 transitions. [2021-11-19 14:28:17,182 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2021-11-19 14:28:17,182 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 89 transitions. [2021-11-19 14:28:17,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-19 14:28:17,185 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:28:17,185 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:28:17,185 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-19 14:28:17,185 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 14:28:17,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:28:17,188 INFO L85 PathProgramCache]: Analyzing trace with hash 1864907251, now seen corresponding path program 1 times [2021-11-19 14:28:17,188 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:28:17,188 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711844931] [2021-11-19 14:28:17,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:28:17,190 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:28:17,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:28:17,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:28:17,265 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:28:17,265 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711844931] [2021-11-19 14:28:17,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711844931] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:28:17,266 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:28:17,266 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 14:28:17,266 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944410603] [2021-11-19 14:28:17,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:28:17,266 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:28:17,267 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:28:17,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:28:17,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 14:28:17,267 INFO L87 Difference]: Start difference. First operand 61 states and 89 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2021-11-19 14:28:17,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:28:17,317 INFO L93 Difference]: Finished difference Result 59 states and 86 transitions. [2021-11-19 14:28:17,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:28:17,317 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 12 [2021-11-19 14:28:17,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:28:17,318 INFO L225 Difference]: With dead ends: 59 [2021-11-19 14:28:17,318 INFO L226 Difference]: Without dead ends: 59 [2021-11-19 14:28:17,318 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 14:28:17,319 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 27 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:28:17,319 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 0 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:28:17,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-11-19 14:28:17,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2021-11-19 14:28:17,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 57 states have (on average 1.5087719298245614) internal successors, (86), 58 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:28:17,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 86 transitions. [2021-11-19 14:28:17,325 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 86 transitions. Word has length 12 [2021-11-19 14:28:17,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:28:17,325 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 86 transitions. [2021-11-19 14:28:17,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2021-11-19 14:28:17,326 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 86 transitions. [2021-11-19 14:28:17,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-19 14:28:17,326 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:28:17,327 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:28:17,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-19 14:28:17,327 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 14:28:17,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:28:17,328 INFO L85 PathProgramCache]: Analyzing trace with hash 989646035, now seen corresponding path program 1 times [2021-11-19 14:28:17,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:28:17,328 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517040672] [2021-11-19 14:28:17,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:28:17,328 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:28:17,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:28:17,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:28:17,416 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:28:17,416 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517040672] [2021-11-19 14:28:17,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517040672] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:28:17,416 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:28:17,416 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 14:28:17,416 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196601103] [2021-11-19 14:28:17,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:28:17,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:28:17,417 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:28:17,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:28:17,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:28:17,418 INFO L87 Difference]: Start difference. First operand 59 states and 86 transitions. Second operand has 4 states, 4 states have (on average 3.5) 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) [2021-11-19 14:28:17,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:28:17,465 INFO L93 Difference]: Finished difference Result 48 states and 65 transitions. [2021-11-19 14:28:17,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:28:17,465 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) 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 [2021-11-19 14:28:17,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:28:17,466 INFO L225 Difference]: With dead ends: 48 [2021-11-19 14:28:17,466 INFO L226 Difference]: Without dead ends: 47 [2021-11-19 14:28:17,466 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:28:17,467 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 8 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:28:17,468 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 0 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:28:17,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-11-19 14:28:17,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2021-11-19 14:28:17,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.391304347826087) internal successors, (64), 46 states have internal predecessors, (64), 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) [2021-11-19 14:28:17,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 64 transitions. [2021-11-19 14:28:17,472 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 64 transitions. Word has length 14 [2021-11-19 14:28:17,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:28:17,472 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 64 transitions. [2021-11-19 14:28:17,472 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) 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) [2021-11-19 14:28:17,472 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 64 transitions. [2021-11-19 14:28:17,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-19 14:28:17,473 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:28:17,473 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:28:17,474 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-19 14:28:17,474 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 14:28:17,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:28:17,474 INFO L85 PathProgramCache]: Analyzing trace with hash 1222778356, now seen corresponding path program 1 times [2021-11-19 14:28:17,475 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:28:17,475 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81119049] [2021-11-19 14:28:17,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:28:17,475 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:28:17,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:28:17,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:28:17,588 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:28:17,588 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81119049] [2021-11-19 14:28:17,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81119049] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:28:17,588 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:28:17,588 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-19 14:28:17,588 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698175261] [2021-11-19 14:28:17,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:28:17,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:28:17,589 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:28:17,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:28:17,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:28:17,590 INFO L87 Difference]: Start difference. First operand 47 states and 64 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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) [2021-11-19 14:28:17,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:28:17,641 INFO L93 Difference]: Finished difference Result 46 states and 63 transitions. [2021-11-19 14:28:17,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:28:17,642 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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 18 [2021-11-19 14:28:17,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:28:17,642 INFO L225 Difference]: With dead ends: 46 [2021-11-19 14:28:17,642 INFO L226 Difference]: Without dead ends: 0 [2021-11-19 14:28:17,642 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:28:17,645 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 5 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:28:17,645 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 0 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:28:17,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-19 14:28:17,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-19 14:28:17,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:28:17,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-19 14:28:17,647 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2021-11-19 14:28:17,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:28:17,647 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-19 14:28:17,648 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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) [2021-11-19 14:28:17,648 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-19 14:28:17,648 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-19 14:28:17,651 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2021-11-19 14:28:17,652 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2021-11-19 14:28:17,652 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2021-11-19 14:28:17,652 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (0 of 4 remaining) [2021-11-19 14:28:17,652 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-19 14:28:17,655 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:28:17,657 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-11-19 14:28:17,657 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-19 14:28:17,660 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 02:28:17 BasicIcfg [2021-11-19 14:28:17,660 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-19 14:28:17,661 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-19 14:28:17,661 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-19 14:28:17,661 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-19 14:28:17,662 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:28:09" (3/4) ... [2021-11-19 14:28:17,666 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-19 14:28:17,673 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure t2_fun [2021-11-19 14:28:17,683 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2021-11-19 14:28:17,684 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-11-19 14:28:17,684 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-19 14:28:17,684 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-19 14:28:17,740 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab03b2c8-853a-4cb0-be39-521bf8540545/bin/utaipan-UbGMyvGFUs/witness.graphml [2021-11-19 14:28:17,741 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-19 14:28:17,741 INFO L158 Benchmark]: Toolchain (without parser) took 9909.76ms. Allocated memory was 96.5MB in the beginning and 130.0MB in the end (delta: 33.6MB). Free memory was 54.5MB in the beginning and 70.1MB in the end (delta: -15.6MB). Peak memory consumption was 16.3MB. Max. memory is 16.1GB. [2021-11-19 14:28:17,742 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 96.5MB. Free memory is still 72.0MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 14:28:17,742 INFO L158 Benchmark]: CACSL2BoogieTranslator took 677.29ms. Allocated memory is still 96.5MB. Free memory was 54.3MB in the beginning and 62.2MB in the end (delta: -7.9MB). Peak memory consumption was 4.4MB. Max. memory is 16.1GB. [2021-11-19 14:28:17,744 INFO L158 Benchmark]: Boogie Procedure Inliner took 80.67ms. Allocated memory is still 96.5MB. Free memory was 62.2MB in the beginning and 59.9MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-19 14:28:17,744 INFO L158 Benchmark]: Boogie Preprocessor took 29.88ms. Allocated memory is still 96.5MB. Free memory was 59.9MB in the beginning and 58.6MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-19 14:28:17,744 INFO L158 Benchmark]: RCFGBuilder took 513.54ms. Allocated memory is still 96.5MB. Free memory was 58.6MB in the beginning and 45.5MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-19 14:28:17,745 INFO L158 Benchmark]: TraceAbstraction took 8509.06ms. Allocated memory was 96.5MB in the beginning and 130.0MB in the end (delta: 33.6MB). Free memory was 45.0MB in the beginning and 73.2MB in the end (delta: -28.2MB). Peak memory consumption was 7.6MB. Max. memory is 16.1GB. [2021-11-19 14:28:17,746 INFO L158 Benchmark]: Witness Printer took 79.88ms. Allocated memory is still 130.0MB. Free memory was 73.2MB in the beginning and 70.1MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-19 14:28:17,748 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 96.5MB. Free memory is still 72.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 677.29ms. Allocated memory is still 96.5MB. Free memory was 54.3MB in the beginning and 62.2MB in the end (delta: -7.9MB). Peak memory consumption was 4.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 80.67ms. Allocated memory is still 96.5MB. Free memory was 62.2MB in the beginning and 59.9MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.88ms. Allocated memory is still 96.5MB. Free memory was 59.9MB in the beginning and 58.6MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 513.54ms. Allocated memory is still 96.5MB. Free memory was 58.6MB in the beginning and 45.5MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 8509.06ms. Allocated memory was 96.5MB in the beginning and 130.0MB in the end (delta: 33.6MB). Free memory was 45.0MB in the beginning and 73.2MB in the end (delta: -28.2MB). Peak memory consumption was 7.6MB. Max. memory is 16.1GB. * Witness Printer took 79.88ms. Allocated memory is still 130.0MB. Free memory was 73.2MB in the beginning and 70.1MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6.3s, 109 PlacesBefore, 31 PlacesAfterwards, 108 TransitionsBefore, 30 TransitionsAfterwards, 1620 CoEnabledTransitionPairs, 7 FixpointIterations, 40 TrivialSequentialCompositions, 45 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 15 ConcurrentYvCompositions, 0 ChoiceCompositions, 100 TotalNumberOfCompositions, 4406 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1732, positive: 1505, positive conditional: 0, positive unconditional: 1505, negative: 227, negative conditional: 0, negative unconditional: 227, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1144, positive: 1085, positive conditional: 0, positive unconditional: 1085, negative: 59, negative conditional: 0, negative unconditional: 59, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1144, positive: 1025, positive conditional: 0, positive unconditional: 1025, negative: 119, negative conditional: 0, negative unconditional: 119, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 119, positive: 60, positive conditional: 0, positive unconditional: 60, negative: 59, negative conditional: 0, negative unconditional: 59, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 282, positive: 109, positive conditional: 0, positive unconditional: 109, negative: 173, negative conditional: 0, negative unconditional: 173, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1732, positive: 420, positive conditional: 0, positive unconditional: 420, negative: 168, negative conditional: 0, negative unconditional: 168, unknown: 1144, unknown conditional: 0, unknown unconditional: 1144] , Statistics on independence cache: Total cache size (in pairs): 95, Positive cache size: 64, Positive conditional cache size: 0, Positive unconditional cache size: 64, Negative cache size: 31, Negative conditional cache size: 0, Negative unconditional cache size: 31 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: 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 with 1 thread instances CFG has 3 procedures, 126 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 8.4s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.4s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 108 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 108 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 110 mSDsCounter, 33 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 391 IncrementalHoareTripleChecker+Invalid, 424 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 33 mSolverCounterUnsat, 0 mSDtfsCounter, 391 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=110occurred in iteration=0, InterpolantAutomatonStates: 35, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 7 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 91 NumberOfCodeBlocks, 91 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 82 ConstructedInterpolants, 0 QuantifiedInterpolants, 326 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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 - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-11-19 14:28:17,815 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab03b2c8-853a-4cb0-be39-521bf8540545/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE