./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe034_tso.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10e74a30-6e4c-45e7-a852-e88ef62dc2ef/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10e74a30-6e4c-45e7-a852-e88ef62dc2ef/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10e74a30-6e4c-45e7-a852-e88ef62dc2ef/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10e74a30-6e4c-45e7-a852-e88ef62dc2ef/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe034_tso.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10e74a30-6e4c-45e7-a852-e88ef62dc2ef/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10e74a30-6e4c-45e7-a852-e88ef62dc2ef/bin/utaipan-q2qaUkNPG8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 11443ba5fcb940082a69ee7d992d4714d4f5f72b ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 07:29:44,430 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:29:44,433 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:29:44,501 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:29:44,502 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:29:44,504 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:29:44,506 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:29:44,510 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:29:44,513 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:29:44,514 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:29:44,516 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:29:44,518 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:29:44,518 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:29:44,520 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:29:44,523 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:29:44,525 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:29:44,526 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:29:44,528 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:29:44,531 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:29:44,538 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:29:44,546 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:29:44,555 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:29:44,557 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:29:44,558 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:29:44,563 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:29:44,566 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:29:44,566 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:29:44,568 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:29:44,570 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:29:44,572 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:29:44,572 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:29:44,574 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:29:44,577 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:29:44,578 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:29:44,581 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:29:44,581 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:29:44,582 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:29:44,582 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:29:44,583 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:29:44,584 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:29:44,585 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:29:44,587 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10e74a30-6e4c-45e7-a852-e88ef62dc2ef/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-13 07:29:44,633 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:29:44,634 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:29:44,636 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:29:44,637 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:29:44,637 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:29:44,638 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:29:44,638 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 07:29:44,638 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:29:44,638 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:29:44,639 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 07:29:44,640 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 07:29:44,641 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:29:44,641 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 07:29:44,641 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 07:29:44,642 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 07:29:44,644 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:29:44,644 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:29:44,644 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 07:29:44,645 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:29:44,645 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:29:44,645 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:29:44,646 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:29:44,646 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:29:44,646 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:29:44,646 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:29:44,647 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:29:44,647 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:29:44,647 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:29:44,648 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:29:44,650 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:29:44,650 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:29:44,651 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:29:44,651 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:29:44,651 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:29:44,652 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 07:29:44,652 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 07:29:44,652 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:29:44,653 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:29:44,653 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:29:44,653 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_10e74a30-6e4c-45e7-a852-e88ef62dc2ef/bin/utaipan-q2qaUkNPG8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10e74a30-6e4c-45e7-a852-e88ef62dc2ef/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 11443ba5fcb940082a69ee7d992d4714d4f5f72b [2021-10-13 07:29:45,015 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:29:45,061 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:29:45,065 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:29:45,066 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:29:45,068 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:29:45,069 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10e74a30-6e4c-45e7-a852-e88ef62dc2ef/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/pthread-wmm/safe034_tso.oepc.i [2021-10-13 07:29:45,161 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10e74a30-6e4c-45e7-a852-e88ef62dc2ef/bin/utaipan-q2qaUkNPG8/data/4d1df1f53/2c54b5eb69c74e2c8a7b2ef261f20e78/FLAGc418a4845 [2021-10-13 07:29:45,941 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:29:45,942 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10e74a30-6e4c-45e7-a852-e88ef62dc2ef/sv-benchmarks/c/pthread-wmm/safe034_tso.oepc.i [2021-10-13 07:29:45,969 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10e74a30-6e4c-45e7-a852-e88ef62dc2ef/bin/utaipan-q2qaUkNPG8/data/4d1df1f53/2c54b5eb69c74e2c8a7b2ef261f20e78/FLAGc418a4845 [2021-10-13 07:29:46,167 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10e74a30-6e4c-45e7-a852-e88ef62dc2ef/bin/utaipan-q2qaUkNPG8/data/4d1df1f53/2c54b5eb69c74e2c8a7b2ef261f20e78 [2021-10-13 07:29:46,171 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:29:46,173 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:29:46,189 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:29:46,189 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:29:46,193 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:29:46,194 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:29:46" (1/1) ... [2021-10-13 07:29:46,196 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18102f1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:29:46, skipping insertion in model container [2021-10-13 07:29:46,196 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:29:46" (1/1) ... [2021-10-13 07:29:46,205 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:29:46,270 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:29:46,520 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10e74a30-6e4c-45e7-a852-e88ef62dc2ef/sv-benchmarks/c/pthread-wmm/safe034_tso.oepc.i[950,963] [2021-10-13 07:29:46,756 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:29:46,768 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:29:46,793 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10e74a30-6e4c-45e7-a852-e88ef62dc2ef/sv-benchmarks/c/pthread-wmm/safe034_tso.oepc.i[950,963] [2021-10-13 07:29:46,866 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:29:46,921 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:29:46,922 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:29:46 WrapperNode [2021-10-13 07:29:46,922 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:29:46,923 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:29:46,924 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:29:46,924 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:29:46,934 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:29:46" (1/1) ... [2021-10-13 07:29:46,960 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:29:46" (1/1) ... [2021-10-13 07:29:46,999 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:29:47,001 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:29:47,001 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:29:47,001 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:29:47,012 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:29:46" (1/1) ... [2021-10-13 07:29:47,013 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:29:46" (1/1) ... [2021-10-13 07:29:47,032 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:29:46" (1/1) ... [2021-10-13 07:29:47,032 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:29:46" (1/1) ... [2021-10-13 07:29:47,039 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:29:46" (1/1) ... [2021-10-13 07:29:47,042 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:29:46" (1/1) ... [2021-10-13 07:29:47,058 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:29:46" (1/1) ... [2021-10-13 07:29:47,061 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:29:47,063 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:29:47,063 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:29:47,063 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:29:47,065 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:29:46" (1/1) ... [2021-10-13 07:29:47,089 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:29:47,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10e74a30-6e4c-45e7-a852-e88ef62dc2ef/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:29:47,118 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10e74a30-6e4c-45e7-a852-e88ef62dc2ef/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:29:47,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10e74a30-6e4c-45e7-a852-e88ef62dc2ef/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:29:47,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-13 07:29:47,171 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-13 07:29:47,171 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:29:47,171 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 07:29:47,171 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-10-13 07:29:47,172 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-10-13 07:29:47,172 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-10-13 07:29:47,172 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-10-13 07:29:47,172 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-10-13 07:29:47,172 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-10-13 07:29:47,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 07:29:47,173 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-13 07:29:47,173 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:29:47,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:29:47,175 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-13 07:29:47,528 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:29:47,530 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-10-13 07:29:47,533 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:29:47 BoogieIcfgContainer [2021-10-13 07:29:47,547 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:29:47,549 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:29:47,550 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:29:47,554 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:29:47,555 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:29:46" (1/3) ... [2021-10-13 07:29:47,556 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bbdfc85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:29:47, skipping insertion in model container [2021-10-13 07:29:47,556 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:29:46" (2/3) ... [2021-10-13 07:29:47,556 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bbdfc85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:29:47, skipping insertion in model container [2021-10-13 07:29:47,557 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:29:47" (3/3) ... [2021-10-13 07:29:47,558 INFO L111 eAbstractionObserver]: Analyzing ICFG safe034_tso.oepc.i [2021-10-13 07:29:47,565 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-13 07:29:47,580 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:29:47,581 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 07:29:47,581 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-13 07:29:47,659 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:29:47,660 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:29:47,660 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:29:47,660 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:29:47,661 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:29:47,661 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:29:47,661 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:29:47,661 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:29:47,663 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:29:47,663 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:29:47,663 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:29:47,664 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:29:47,664 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:29:47,665 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:29:47,665 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:29:47,665 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:29:47,666 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:29:47,666 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:29:47,666 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:29:47,666 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:29:47,667 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:29:47,668 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:29:47,668 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:29:47,669 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:29:47,669 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:29:47,670 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:29:47,670 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:29:47,670 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:29:47,671 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:29:47,671 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:29:47,671 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:29:47,671 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:29:47,672 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:29:47,673 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:29:47,673 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:29:47,674 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:29:47,678 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:29:47,679 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:29:47,679 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:29:47,679 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:29:47,731 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:29:47,731 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:29:47,732 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:29:47,732 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:29:47,736 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:29:47,737 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:29:47,737 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:29:47,738 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:29:47,756 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-10-13 07:29:47,852 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:29:47,860 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 07:29:47,861 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-13 07:29:47,880 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-13 07:29:47,895 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 92 places, 84 transitions, 183 flow [2021-10-13 07:29:47,899 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 92 places, 84 transitions, 183 flow [2021-10-13 07:29:47,901 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 92 places, 84 transitions, 183 flow [2021-10-13 07:29:48,009 INFO L129 PetriNetUnfolder]: 2/81 cut-off events. [2021-10-13 07:29:48,009 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-13 07:29:48,015 INFO L84 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 81 events. 2/81 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 63. Up to 2 conditions per place. [2021-10-13 07:29:48,021 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2021-10-13 07:29:51,984 INFO L131 LiptonReduction]: Checked pairs total: 2647 [2021-10-13 07:29:51,985 INFO L133 LiptonReduction]: Total number of compositions: 74 [2021-10-13 07:29:51,995 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 57 flow [2021-10-13 07:29:52,049 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 234 states, 233 states have (on average 2.815450643776824) internal successors, (656), 233 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:29:52,055 INFO L276 IsEmpty]: Start isEmpty. Operand has 234 states, 233 states have (on average 2.815450643776824) internal successors, (656), 233 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:29:52,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-13 07:29:52,066 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:29:52,068 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:29:52,068 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-13 07:29:52,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:29:52,077 INFO L82 PathProgramCache]: Analyzing trace with hash -863554813, now seen corresponding path program 1 times [2021-10-13 07:29:52,090 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:29:52,091 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152469750] [2021-10-13 07:29:52,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:29:52,093 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:29:52,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:29:52,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:29:52,477 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:29:52,478 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152469750] [2021-10-13 07:29:52,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152469750] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:29:52,479 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:29:52,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-13 07:29:52,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166425243] [2021-10-13 07:29:52,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:29:52,487 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:29:52,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:29:52,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:29:52,508 INFO L87 Difference]: Start difference. First operand has 234 states, 233 states have (on average 2.815450643776824) internal successors, (656), 233 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:29:52,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:29:52,572 INFO L93 Difference]: Finished difference Result 226 states and 626 transitions. [2021-10-13 07:29:52,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:29:52,576 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-13 07:29:52,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:29:52,601 INFO L225 Difference]: With dead ends: 226 [2021-10-13 07:29:52,601 INFO L226 Difference]: Without dead ends: 226 [2021-10-13 07:29:52,603 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:29:52,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2021-10-13 07:29:52,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2021-10-13 07:29:52,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 225 states have (on average 2.7822222222222224) internal successors, (626), 225 states have internal predecessors, (626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:29:52,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 626 transitions. [2021-10-13 07:29:52,678 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 626 transitions. Word has length 8 [2021-10-13 07:29:52,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:29:52,680 INFO L470 AbstractCegarLoop]: Abstraction has 226 states and 626 transitions. [2021-10-13 07:29:52,680 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:29:52,680 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 626 transitions. [2021-10-13 07:29:52,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-13 07:29:52,682 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:29:52,683 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:29:52,683 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 07:29:52,684 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-13 07:29:52,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:29:52,685 INFO L82 PathProgramCache]: Analyzing trace with hash 609800790, now seen corresponding path program 1 times [2021-10-13 07:29:52,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:29:52,685 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556235189] [2021-10-13 07:29:52,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:29:52,686 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:29:52,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:29:52,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:29:52,838 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:29:52,839 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556235189] [2021-10-13 07:29:52,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556235189] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:29:52,839 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:29:52,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 07:29:52,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546248972] [2021-10-13 07:29:52,841 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:29:52,841 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:29:52,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:29:52,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:29:52,843 INFO L87 Difference]: Start difference. First operand 226 states and 626 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:29:52,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:29:52,899 INFO L93 Difference]: Finished difference Result 242 states and 605 transitions. [2021-10-13 07:29:52,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 07:29:52,904 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-13 07:29:52,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:29:52,907 INFO L225 Difference]: With dead ends: 242 [2021-10-13 07:29:52,907 INFO L226 Difference]: Without dead ends: 178 [2021-10-13 07:29:52,910 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.0ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:29:52,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2021-10-13 07:29:52,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2021-10-13 07:29:52,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 177 states have (on average 2.4519774011299433) internal successors, (434), 177 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:29:52,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 434 transitions. [2021-10-13 07:29:52,943 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 434 transitions. Word has length 9 [2021-10-13 07:29:52,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:29:52,943 INFO L470 AbstractCegarLoop]: Abstraction has 178 states and 434 transitions. [2021-10-13 07:29:52,944 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:29:52,944 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 434 transitions. [2021-10-13 07:29:52,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 07:29:52,945 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:29:52,946 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:29:52,946 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 07:29:52,946 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-13 07:29:52,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:29:52,947 INFO L82 PathProgramCache]: Analyzing trace with hash 299011224, now seen corresponding path program 1 times [2021-10-13 07:29:52,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:29:52,948 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418482903] [2021-10-13 07:29:52,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:29:52,948 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:29:53,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:29:53,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:29:53,094 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:29:53,095 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418482903] [2021-10-13 07:29:53,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418482903] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:29:53,095 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:29:53,095 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:29:53,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782514339] [2021-10-13 07:29:53,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 07:29:53,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:29:53,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 07:29:53,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:29:53,098 INFO L87 Difference]: Start difference. First operand 178 states and 434 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) [2021-10-13 07:29:53,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:29:53,167 INFO L93 Difference]: Finished difference Result 163 states and 368 transitions. [2021-10-13 07:29:53,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 07:29:53,168 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 [2021-10-13 07:29:53,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:29:53,170 INFO L225 Difference]: With dead ends: 163 [2021-10-13 07:29:53,174 INFO L226 Difference]: Without dead ends: 126 [2021-10-13 07:29:53,175 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 25.3ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:29:53,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2021-10-13 07:29:53,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2021-10-13 07:29:53,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 125 states have (on average 2.224) internal successors, (278), 125 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:29:53,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 278 transitions. [2021-10-13 07:29:53,192 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 278 transitions. Word has length 11 [2021-10-13 07:29:53,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:29:53,193 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 278 transitions. [2021-10-13 07:29:53,193 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) [2021-10-13 07:29:53,193 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 278 transitions. [2021-10-13 07:29:53,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-13 07:29:53,201 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:29:53,201 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:29:53,201 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-13 07:29:53,201 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-13 07:29:53,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:29:53,203 INFO L82 PathProgramCache]: Analyzing trace with hash 38516072, now seen corresponding path program 1 times [2021-10-13 07:29:53,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:29:53,204 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106331591] [2021-10-13 07:29:53,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:29:53,204 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:29:53,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:29:53,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:29:53,303 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:29:53,304 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106331591] [2021-10-13 07:29:53,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106331591] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:29:53,304 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:29:53,305 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 07:29:53,305 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982668473] [2021-10-13 07:29:53,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:29:53,306 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:29:53,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:29:53,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:29:53,307 INFO L87 Difference]: Start difference. First operand 126 states and 278 transitions. Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:29:53,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:29:53,322 INFO L93 Difference]: Finished difference Result 164 states and 348 transitions. [2021-10-13 07:29:53,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:29:53,322 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-13 07:29:53,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:29:53,324 INFO L225 Difference]: With dead ends: 164 [2021-10-13 07:29:53,325 INFO L226 Difference]: Without dead ends: 152 [2021-10-13 07:29:53,325 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:29:53,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-10-13 07:29:53,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 146. [2021-10-13 07:29:53,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 145 states have (on average 2.1586206896551725) internal successors, (313), 145 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:29:53,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 313 transitions. [2021-10-13 07:29:53,365 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 313 transitions. Word has length 14 [2021-10-13 07:29:53,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:29:53,366 INFO L470 AbstractCegarLoop]: Abstraction has 146 states and 313 transitions. [2021-10-13 07:29:53,366 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:29:53,366 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 313 transitions. [2021-10-13 07:29:53,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-13 07:29:53,368 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:29:53,368 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:29:53,369 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-13 07:29:53,369 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-13 07:29:53,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:29:53,370 INFO L82 PathProgramCache]: Analyzing trace with hash 42959736, now seen corresponding path program 1 times [2021-10-13 07:29:53,370 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:29:53,371 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295566183] [2021-10-13 07:29:53,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:29:53,371 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:29:53,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:29:53,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:29:53,467 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:29:53,468 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295566183] [2021-10-13 07:29:53,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295566183] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:29:53,469 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:29:53,469 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 07:29:53,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369295407] [2021-10-13 07:29:53,470 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:29:53,470 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:29:53,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:29:53,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:29:53,472 INFO L87 Difference]: Start difference. First operand 146 states and 313 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:29:53,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:29:53,525 INFO L93 Difference]: Finished difference Result 138 states and 295 transitions. [2021-10-13 07:29:53,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 07:29:53,526 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-13 07:29:53,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:29:53,528 INFO L225 Difference]: With dead ends: 138 [2021-10-13 07:29:53,528 INFO L226 Difference]: Without dead ends: 108 [2021-10-13 07:29:53,529 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 23.6ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-10-13 07:29:53,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2021-10-13 07:29:53,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 92. [2021-10-13 07:29:53,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 91 states have (on average 2.131868131868132) internal successors, (194), 91 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:29:53,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 194 transitions. [2021-10-13 07:29:53,539 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 194 transitions. Word has length 14 [2021-10-13 07:29:53,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:29:53,539 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 194 transitions. [2021-10-13 07:29:53,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:29:53,540 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 194 transitions. [2021-10-13 07:29:53,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 07:29:53,541 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:29:53,542 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:29:53,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-13 07:29:53,542 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-13 07:29:53,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:29:53,543 INFO L82 PathProgramCache]: Analyzing trace with hash 1549102936, now seen corresponding path program 1 times [2021-10-13 07:29:53,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:29:53,544 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568946645] [2021-10-13 07:29:53,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:29:53,545 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:29:53,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:29:53,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:29:53,643 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:29:53,643 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568946645] [2021-10-13 07:29:53,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568946645] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:29:53,644 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:29:53,644 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:29:53,645 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852002537] [2021-10-13 07:29:53,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:29:53,645 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:29:53,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:29:53,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:29:53,647 INFO L87 Difference]: Start difference. First operand 92 states and 194 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:29:53,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:29:53,687 INFO L93 Difference]: Finished difference Result 121 states and 249 transitions. [2021-10-13 07:29:53,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 07:29:53,688 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 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 17 [2021-10-13 07:29:53,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:29:53,689 INFO L225 Difference]: With dead ends: 121 [2021-10-13 07:29:53,690 INFO L226 Difference]: Without dead ends: 76 [2021-10-13 07:29:53,690 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.7ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:29:53,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-10-13 07:29:53,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 64. [2021-10-13 07:29:53,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 2.0) internal successors, (126), 63 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:29:53,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 126 transitions. [2021-10-13 07:29:53,699 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 126 transitions. Word has length 17 [2021-10-13 07:29:53,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:29:53,700 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 126 transitions. [2021-10-13 07:29:53,701 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:29:53,701 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 126 transitions. [2021-10-13 07:29:53,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 07:29:53,704 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:29:53,704 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:29:53,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-13 07:29:53,704 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-13 07:29:53,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:29:53,708 INFO L82 PathProgramCache]: Analyzing trace with hash -446859116, now seen corresponding path program 2 times [2021-10-13 07:29:53,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:29:53,709 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138886223] [2021-10-13 07:29:53,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:29:53,710 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:29:53,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:29:53,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:29:53,850 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:29:53,851 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138886223] [2021-10-13 07:29:53,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138886223] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:29:53,851 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:29:53,851 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 07:29:53,852 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602078373] [2021-10-13 07:29:53,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 07:29:53,853 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:29:53,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 07:29:53,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:29:53,861 INFO L87 Difference]: Start difference. First operand 64 states and 126 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:29:53,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:29:53,904 INFO L93 Difference]: Finished difference Result 93 states and 177 transitions. [2021-10-13 07:29:53,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 07:29:53,907 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 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 17 [2021-10-13 07:29:53,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:29:53,909 INFO L225 Difference]: With dead ends: 93 [2021-10-13 07:29:53,909 INFO L226 Difference]: Without dead ends: 56 [2021-10-13 07:29:53,911 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 35.0ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-13 07:29:53,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-10-13 07:29:53,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 52. [2021-10-13 07:29:53,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.8823529411764706) internal successors, (96), 51 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:29:53,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 96 transitions. [2021-10-13 07:29:53,928 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 96 transitions. Word has length 17 [2021-10-13 07:29:53,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:29:53,929 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 96 transitions. [2021-10-13 07:29:53,929 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:29:53,929 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 96 transitions. [2021-10-13 07:29:53,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 07:29:53,930 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:29:53,930 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:29:53,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-13 07:29:53,932 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-13 07:29:53,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:29:53,933 INFO L82 PathProgramCache]: Analyzing trace with hash -358922382, now seen corresponding path program 3 times [2021-10-13 07:29:53,933 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:29:53,933 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577959438] [2021-10-13 07:29:53,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:29:53,934 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:29:53,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:29:54,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:29:54,039 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:29:54,039 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577959438] [2021-10-13 07:29:54,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577959438] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:29:54,039 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:29:54,040 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:29:54,040 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147689932] [2021-10-13 07:29:54,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:29:54,041 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:29:54,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:29:54,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:29:54,042 INFO L87 Difference]: Start difference. First operand 52 states and 96 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:29:54,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:29:54,055 INFO L93 Difference]: Finished difference Result 65 states and 117 transitions. [2021-10-13 07:29:54,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:29:54,056 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 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 17 [2021-10-13 07:29:54,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:29:54,057 INFO L225 Difference]: With dead ends: 65 [2021-10-13 07:29:54,057 INFO L226 Difference]: Without dead ends: 36 [2021-10-13 07:29:54,057 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.0ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:29:54,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-10-13 07:29:54,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2021-10-13 07:29:54,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.6) internal successors, (56), 35 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:29:54,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 56 transitions. [2021-10-13 07:29:54,061 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 56 transitions. Word has length 17 [2021-10-13 07:29:54,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:29:54,061 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 56 transitions. [2021-10-13 07:29:54,062 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:29:54,062 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 56 transitions. [2021-10-13 07:29:54,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 07:29:54,062 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:29:54,063 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:29:54,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-13 07:29:54,063 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-13 07:29:54,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:29:54,064 INFO L82 PathProgramCache]: Analyzing trace with hash 73863514, now seen corresponding path program 4 times [2021-10-13 07:29:54,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:29:54,065 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208010013] [2021-10-13 07:29:54,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:29:54,065 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:29:54,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:29:54,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:29:54,150 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:29:54,150 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208010013] [2021-10-13 07:29:54,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208010013] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:29:54,151 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:29:54,151 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:29:54,151 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870359873] [2021-10-13 07:29:54,152 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:29:54,152 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:29:54,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:29:54,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:29:54,153 INFO L87 Difference]: Start difference. First operand 36 states and 56 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:29:54,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:29:54,172 INFO L93 Difference]: Finished difference Result 35 states and 55 transitions. [2021-10-13 07:29:54,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 07:29:54,173 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 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 17 [2021-10-13 07:29:54,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:29:54,173 INFO L225 Difference]: With dead ends: 35 [2021-10-13 07:29:54,174 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 07:29:54,174 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.9ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:29:54,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 07:29:54,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 07:29:54,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:29:54,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 07:29:54,175 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2021-10-13 07:29:54,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:29:54,176 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 07:29:54,176 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:29:54,176 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 07:29:54,176 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 07:29:54,179 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:29:54,180 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-13 07:29:54,180 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-13 07:29:54,180 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-13 07:29:54,180 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-13 07:29:54,186 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-13 07:29:54,186 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 07:29:54,189 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:29:54 BasicIcfg [2021-10-13 07:29:54,189 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 07:29:54,190 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 07:29:54,190 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 07:29:54,190 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 07:29:54,191 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:29:47" (3/4) ... [2021-10-13 07:29:54,194 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 07:29:54,201 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-10-13 07:29:54,202 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-10-13 07:29:54,202 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2021-10-13 07:29:54,208 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2021-10-13 07:29:54,208 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-13 07:29:54,208 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 07:29:54,209 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 07:29:54,257 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10e74a30-6e4c-45e7-a852-e88ef62dc2ef/bin/utaipan-q2qaUkNPG8/witness.graphml [2021-10-13 07:29:54,257 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 07:29:54,259 INFO L168 Benchmark]: Toolchain (without parser) took 8085.15 ms. Allocated memory was 88.1 MB in the beginning and 140.5 MB in the end (delta: 52.4 MB). Free memory was 53.2 MB in the beginning and 55.1 MB in the end (delta: -1.8 MB). Peak memory consumption was 49.2 MB. Max. memory is 16.1 GB. [2021-10-13 07:29:54,260 INFO L168 Benchmark]: CDTParser took 0.38 ms. Allocated memory is still 88.1 MB. Free memory was 61.6 MB in the beginning and 61.6 MB in the end (delta: 21.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:29:54,261 INFO L168 Benchmark]: CACSL2BoogieTranslator took 733.77 ms. Allocated memory is still 88.1 MB. Free memory was 53.0 MB in the beginning and 56.0 MB in the end (delta: -3.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 07:29:54,261 INFO L168 Benchmark]: Boogie Procedure Inliner took 75.71 ms. Allocated memory is still 88.1 MB. Free memory was 56.0 MB in the beginning and 53.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:29:54,262 INFO L168 Benchmark]: Boogie Preprocessor took 61.16 ms. Allocated memory is still 88.1 MB. Free memory was 53.9 MB in the beginning and 52.4 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:29:54,263 INFO L168 Benchmark]: RCFGBuilder took 484.79 ms. Allocated memory is still 88.1 MB. Free memory was 52.4 MB in the beginning and 40.4 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-13 07:29:54,263 INFO L168 Benchmark]: TraceAbstraction took 6639.68 ms. Allocated memory was 88.1 MB in the beginning and 140.5 MB in the end (delta: 52.4 MB). Free memory was 40.0 MB in the beginning and 58.2 MB in the end (delta: -18.2 MB). Peak memory consumption was 36.9 MB. Max. memory is 16.1 GB. [2021-10-13 07:29:54,264 INFO L168 Benchmark]: Witness Printer took 67.50 ms. Allocated memory is still 140.5 MB. Free memory was 58.2 MB in the beginning and 55.1 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:29:54,268 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38 ms. Allocated memory is still 88.1 MB. Free memory was 61.6 MB in the beginning and 61.6 MB in the end (delta: 21.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 733.77 ms. Allocated memory is still 88.1 MB. Free memory was 53.0 MB in the beginning and 56.0 MB in the end (delta: -3.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 75.71 ms. Allocated memory is still 88.1 MB. Free memory was 56.0 MB in the beginning and 53.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 61.16 ms. Allocated memory is still 88.1 MB. Free memory was 53.9 MB in the beginning and 52.4 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 484.79 ms. Allocated memory is still 88.1 MB. Free memory was 52.4 MB in the beginning and 40.4 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6639.68 ms. Allocated memory was 88.1 MB in the beginning and 140.5 MB in the end (delta: 52.4 MB). Free memory was 40.0 MB in the beginning and 58.2 MB in the end (delta: -18.2 MB). Peak memory consumption was 36.9 MB. Max. memory is 16.1 GB. * Witness Printer took 67.50 ms. Allocated memory is still 140.5 MB. Free memory was 58.2 MB in the beginning and 55.1 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4086.3ms, 92 PlacesBefore, 31 PlacesAfterwards, 84 TransitionsBefore, 21 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 5 FixpointIterations, 20 TrivialSequentialCompositions, 43 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 2 ChoiceCompositions, 74 TotalNumberOfCompositions, 2647 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1673, positive: 1590, positive conditional: 0, positive unconditional: 1590, negative: 83, negative conditional: 0, negative unconditional: 83, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1074, positive: 1030, positive conditional: 0, positive unconditional: 1030, negative: 44, negative conditional: 0, negative unconditional: 44, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1074, positive: 1023, positive conditional: 0, positive unconditional: 1023, negative: 51, negative conditional: 0, negative unconditional: 51, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 51, positive: 7, positive conditional: 0, positive unconditional: 7, negative: 44, negative conditional: 0, negative unconditional: 44, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 174, positive: 34, positive conditional: 0, positive unconditional: 34, negative: 140, negative conditional: 0, negative unconditional: 140, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1673, positive: 560, positive conditional: 0, positive unconditional: 560, negative: 39, negative conditional: 0, negative unconditional: 39, unknown: 1074, unknown conditional: 0, unknown unconditional: 1074] , Statistics on independence cache: Total cache size (in pairs): 92, Positive cache size: 75, Positive conditional cache size: 0, Positive unconditional cache size: 75, Negative cache size: 17, Negative conditional cache size: 0, Negative unconditional cache size: 17 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 18]: 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 7 procedures, 107 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 6334.5ms, OverallIterations: 9, TraceHistogramMax: 1, EmptinessCheckTime: 35.2ms, AutomataDifference: 481.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 4188.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 177 SDtfs, 191 SDslu, 215 SDs, 0 SdLazy, 109 SolverSat, 35 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 153.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 35 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 153.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=234occurred in iteration=0, InterpolantAutomatonStates: 44, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 183.3ms AutomataMinimizationTime, 9 MinimizatonAttempts, 38 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 45.6ms SsaConstructionTime, 356.0ms SatisfiabilityAnalysisTime, 683.3ms InterpolantComputationTime, 124 NumberOfCodeBlocks, 124 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 115 ConstructedInterpolants, 0 QuantifiedInterpolants, 451 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 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-13 07:29:54,335 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10e74a30-6e4c-45e7-a852-e88ef62dc2ef/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...