./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label31.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e3d3e-52bb-46b8-8e0d-243ebda06cdb/bin/utaipan-tZwUujhuQw/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e3d3e-52bb-46b8-8e0d-243ebda06cdb/bin/utaipan-tZwUujhuQw/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e3d3e-52bb-46b8-8e0d-243ebda06cdb/bin/utaipan-tZwUujhuQw/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e3d3e-52bb-46b8-8e0d-243ebda06cdb/bin/utaipan-tZwUujhuQw/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label31.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e3d3e-52bb-46b8-8e0d-243ebda06cdb/bin/utaipan-tZwUujhuQw/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e3d3e-52bb-46b8-8e0d-243ebda06cdb/bin/utaipan-tZwUujhuQw --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 e4dd87ffa8279e5be73819f1eecf23f4704317559faef100e8eb60d719eb066b .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-20 05:30:17,438 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-20 05:30:17,443 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-20 05:30:17,496 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-20 05:30:17,497 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-20 05:30:17,504 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-20 05:30:17,508 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-20 05:30:17,513 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-20 05:30:17,519 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-20 05:30:17,529 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-20 05:30:17,531 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-20 05:30:17,533 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-20 05:30:17,535 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-20 05:30:17,539 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-20 05:30:17,543 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-20 05:30:17,546 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-20 05:30:17,548 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-20 05:30:17,552 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-20 05:30:17,560 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-20 05:30:17,564 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-20 05:30:17,569 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-20 05:30:17,574 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-20 05:30:17,578 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-20 05:30:17,581 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-20 05:30:17,593 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-20 05:30:17,593 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-20 05:30:17,594 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-20 05:30:17,597 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-20 05:30:17,598 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-20 05:30:17,600 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-20 05:30:17,600 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-20 05:30:17,602 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-20 05:30:17,603 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-20 05:30:17,604 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-20 05:30:17,606 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-20 05:30:17,606 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-20 05:30:17,608 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-20 05:30:17,608 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-20 05:30:17,608 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-20 05:30:17,610 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-20 05:30:17,611 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-20 05:30:17,612 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e3d3e-52bb-46b8-8e0d-243ebda06cdb/bin/utaipan-tZwUujhuQw/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-20 05:30:17,650 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-20 05:30:17,650 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-20 05:30:17,652 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-20 05:30:17,652 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-20 05:30:17,652 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-20 05:30:17,653 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-20 05:30:17,653 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-20 05:30:17,653 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-20 05:30:17,654 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-20 05:30:17,654 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-20 05:30:17,654 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-20 05:30:17,655 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-20 05:30:17,655 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-20 05:30:17,655 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-20 05:30:17,656 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-20 05:30:17,657 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-20 05:30:17,657 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-20 05:30:17,658 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-20 05:30:17,658 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-20 05:30:17,658 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-20 05:30:17,659 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-20 05:30:17,659 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-20 05:30:17,659 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-20 05:30:17,660 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-20 05:30:17,660 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-20 05:30:17,660 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-20 05:30:17,661 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-20 05:30:17,661 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-20 05:30:17,661 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-20 05:30:17,662 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-20 05:30:17,662 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-20 05:30:17,662 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-20 05:30:17,663 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-20 05:30:17,663 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-20 05:30:17,663 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-20 05:30:17,664 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-20 05:30:17,664 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-20 05:30:17,664 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-20 05:30:17,665 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-20 05:30:17,665 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_608e3d3e-52bb-46b8-8e0d-243ebda06cdb/bin/utaipan-tZwUujhuQw/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e3d3e-52bb-46b8-8e0d-243ebda06cdb/bin/utaipan-tZwUujhuQw Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e4dd87ffa8279e5be73819f1eecf23f4704317559faef100e8eb60d719eb066b [2021-10-20 05:30:18,019 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-20 05:30:18,059 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-20 05:30:18,062 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-20 05:30:18,064 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-20 05:30:18,065 INFO L275 PluginConnector]: CDTParser initialized [2021-10-20 05:30:18,066 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e3d3e-52bb-46b8-8e0d-243ebda06cdb/bin/utaipan-tZwUujhuQw/../../sv-benchmarks/c/eca-rers2012/Problem01_label31.c [2021-10-20 05:30:18,208 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e3d3e-52bb-46b8-8e0d-243ebda06cdb/bin/utaipan-tZwUujhuQw/data/f347e96df/b9d49db1a1374a5ca838b0a8c5d6b489/FLAG9a3a51df2 [2021-10-20 05:30:18,801 INFO L306 CDTParser]: Found 1 translation units. [2021-10-20 05:30:18,802 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e3d3e-52bb-46b8-8e0d-243ebda06cdb/sv-benchmarks/c/eca-rers2012/Problem01_label31.c [2021-10-20 05:30:18,816 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e3d3e-52bb-46b8-8e0d-243ebda06cdb/bin/utaipan-tZwUujhuQw/data/f347e96df/b9d49db1a1374a5ca838b0a8c5d6b489/FLAG9a3a51df2 [2021-10-20 05:30:19,078 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e3d3e-52bb-46b8-8e0d-243ebda06cdb/bin/utaipan-tZwUujhuQw/data/f347e96df/b9d49db1a1374a5ca838b0a8c5d6b489 [2021-10-20 05:30:19,082 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-20 05:30:19,083 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-20 05:30:19,087 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-20 05:30:19,087 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-20 05:30:19,091 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-20 05:30:19,092 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:30:19" (1/1) ... [2021-10-20 05:30:19,094 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@425712 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:30:19, skipping insertion in model container [2021-10-20 05:30:19,094 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:30:19" (1/1) ... [2021-10-20 05:30:19,102 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-20 05:30:19,179 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-20 05:30:19,516 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_608e3d3e-52bb-46b8-8e0d-243ebda06cdb/sv-benchmarks/c/eca-rers2012/Problem01_label31.c[16993,17006] [2021-10-20 05:30:19,554 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-20 05:30:19,563 INFO L203 MainTranslator]: Completed pre-run [2021-10-20 05:30:19,717 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_608e3d3e-52bb-46b8-8e0d-243ebda06cdb/sv-benchmarks/c/eca-rers2012/Problem01_label31.c[16993,17006] [2021-10-20 05:30:19,757 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-20 05:30:19,772 INFO L208 MainTranslator]: Completed translation [2021-10-20 05:30:19,773 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:30:19 WrapperNode [2021-10-20 05:30:19,773 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-20 05:30:19,774 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-20 05:30:19,775 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-20 05:30:19,775 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-20 05:30:19,783 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:30:19" (1/1) ... [2021-10-20 05:30:19,806 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:30:19" (1/1) ... [2021-10-20 05:30:19,888 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-20 05:30:19,889 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-20 05:30:19,890 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-20 05:30:19,890 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-20 05:30:19,899 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:30:19" (1/1) ... [2021-10-20 05:30:19,903 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:30:19" (1/1) ... [2021-10-20 05:30:19,908 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:30:19" (1/1) ... [2021-10-20 05:30:19,908 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:30:19" (1/1) ... [2021-10-20 05:30:19,948 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:30:19" (1/1) ... [2021-10-20 05:30:19,958 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:30:19" (1/1) ... [2021-10-20 05:30:19,966 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:30:19" (1/1) ... [2021-10-20 05:30:20,001 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-20 05:30:20,002 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-20 05:30:20,003 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-20 05:30:20,003 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-20 05:30:20,004 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:30:19" (1/1) ... [2021-10-20 05:30:20,014 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-20 05:30:20,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e3d3e-52bb-46b8-8e0d-243ebda06cdb/bin/utaipan-tZwUujhuQw/z3 [2021-10-20 05:30:20,041 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e3d3e-52bb-46b8-8e0d-243ebda06cdb/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-20 05:30:20,073 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e3d3e-52bb-46b8-8e0d-243ebda06cdb/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-20 05:30:20,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-20 05:30:20,092 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-20 05:30:20,093 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-20 05:30:20,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-20 05:30:22,291 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-20 05:30:22,291 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-20 05:30:22,295 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:30:22 BoogieIcfgContainer [2021-10-20 05:30:22,295 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-20 05:30:22,297 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-20 05:30:22,298 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-20 05:30:22,302 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-20 05:30:22,303 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 05:30:19" (1/3) ... [2021-10-20 05:30:22,304 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52499dde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 05:30:22, skipping insertion in model container [2021-10-20 05:30:22,304 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:30:19" (2/3) ... [2021-10-20 05:30:22,305 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52499dde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 05:30:22, skipping insertion in model container [2021-10-20 05:30:22,305 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:30:22" (3/3) ... [2021-10-20 05:30:22,307 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label31.c [2021-10-20 05:30:22,314 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-20 05:30:22,315 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-20 05:30:22,391 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-20 05:30:22,403 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-20 05:30:22,404 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-20 05:30:22,430 INFO L276 IsEmpty]: Start isEmpty. Operand has 76 states, 74 states have (on average 1.945945945945946) internal successors, (144), 75 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:30:22,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-10-20 05:30:22,445 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:30:22,446 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 05:30:22,446 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 05:30:22,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:30:22,454 INFO L82 PathProgramCache]: Analyzing trace with hash 379011262, now seen corresponding path program 1 times [2021-10-20 05:30:22,465 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 05:30:22,495 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820236718] [2021-10-20 05:30:22,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:30:22,501 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 05:30:22,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:30:22,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:30:22,982 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 05:30:22,982 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820236718] [2021-10-20 05:30:22,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820236718] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-20 05:30:22,984 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:30:22,984 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-20 05:30:22,986 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096483678] [2021-10-20 05:30:22,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-20 05:30:22,993 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 05:30:23,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-20 05:30:23,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-20 05:30:23,012 INFO L87 Difference]: Start difference. First operand has 76 states, 74 states have (on average 1.945945945945946) internal successors, (144), 75 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:30:23,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:30:23,641 INFO L93 Difference]: Finished difference Result 224 states and 428 transitions. [2021-10-20 05:30:23,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-20 05:30:23,643 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-10-20 05:30:23,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:30:23,658 INFO L225 Difference]: With dead ends: 224 [2021-10-20 05:30:23,661 INFO L226 Difference]: Without dead ends: 145 [2021-10-20 05:30:23,666 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-20 05:30:23,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-10-20 05:30:23,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2021-10-20 05:30:23,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 1.8819444444444444) internal successors, (271), 144 states have internal predecessors, (271), 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) [2021-10-20 05:30:23,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 271 transitions. [2021-10-20 05:30:23,764 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 271 transitions. Word has length 71 [2021-10-20 05:30:23,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:30:23,766 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 271 transitions. [2021-10-20 05:30:23,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:30:23,767 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 271 transitions. [2021-10-20 05:30:23,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-10-20 05:30:23,776 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:30:23,776 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 05:30:23,777 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-20 05:30:23,777 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 05:30:23,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:30:23,783 INFO L82 PathProgramCache]: Analyzing trace with hash 1708118262, now seen corresponding path program 1 times [2021-10-20 05:30:23,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 05:30:23,784 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462789107] [2021-10-20 05:30:23,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:30:23,784 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 05:30:23,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:30:23,895 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:30:23,895 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 05:30:23,896 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462789107] [2021-10-20 05:30:23,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462789107] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-20 05:30:23,896 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:30:23,896 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-20 05:30:23,897 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738675717] [2021-10-20 05:30:23,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-20 05:30:23,900 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 05:30:23,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-20 05:30:23,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-20 05:30:23,903 INFO L87 Difference]: Start difference. First operand 145 states and 271 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 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) [2021-10-20 05:30:24,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:30:24,417 INFO L93 Difference]: Finished difference Result 431 states and 810 transitions. [2021-10-20 05:30:24,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-20 05:30:24,418 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 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 76 [2021-10-20 05:30:24,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:30:24,422 INFO L225 Difference]: With dead ends: 431 [2021-10-20 05:30:24,423 INFO L226 Difference]: Without dead ends: 287 [2021-10-20 05:30:24,425 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-20 05:30:24,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2021-10-20 05:30:24,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2021-10-20 05:30:24,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 286 states have (on average 1.7622377622377623) internal successors, (504), 286 states have internal predecessors, (504), 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) [2021-10-20 05:30:24,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 504 transitions. [2021-10-20 05:30:24,470 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 504 transitions. Word has length 76 [2021-10-20 05:30:24,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:30:24,471 INFO L470 AbstractCegarLoop]: Abstraction has 287 states and 504 transitions. [2021-10-20 05:30:24,472 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 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) [2021-10-20 05:30:24,472 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 504 transitions. [2021-10-20 05:30:24,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-10-20 05:30:24,486 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:30:24,486 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 05:30:24,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-20 05:30:24,488 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 05:30:24,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:30:24,495 INFO L82 PathProgramCache]: Analyzing trace with hash 714029981, now seen corresponding path program 1 times [2021-10-20 05:30:24,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 05:30:24,496 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968757495] [2021-10-20 05:30:24,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:30:24,498 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 05:30:24,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:30:24,637 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:30:24,638 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 05:30:24,638 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968757495] [2021-10-20 05:30:24,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968757495] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-20 05:30:24,639 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:30:24,646 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-20 05:30:24,648 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938673792] [2021-10-20 05:30:24,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-20 05:30:24,649 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 05:30:24,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-20 05:30:24,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-20 05:30:24,651 INFO L87 Difference]: Start difference. First operand 287 states and 504 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:30:25,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:30:25,110 INFO L93 Difference]: Finished difference Result 786 states and 1371 transitions. [2021-10-20 05:30:25,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-20 05:30:25,111 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2021-10-20 05:30:25,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:30:25,116 INFO L225 Difference]: With dead ends: 786 [2021-10-20 05:30:25,116 INFO L226 Difference]: Without dead ends: 500 [2021-10-20 05:30:25,119 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-20 05:30:25,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2021-10-20 05:30:25,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 429. [2021-10-20 05:30:25,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 428 states have (on average 1.5934579439252337) internal successors, (682), 428 states have internal predecessors, (682), 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) [2021-10-20 05:30:25,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 682 transitions. [2021-10-20 05:30:25,151 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 682 transitions. Word has length 86 [2021-10-20 05:30:25,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:30:25,151 INFO L470 AbstractCegarLoop]: Abstraction has 429 states and 682 transitions. [2021-10-20 05:30:25,151 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:30:25,152 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 682 transitions. [2021-10-20 05:30:25,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-10-20 05:30:25,155 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:30:25,155 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 05:30:25,156 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-20 05:30:25,156 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 05:30:25,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:30:25,157 INFO L82 PathProgramCache]: Analyzing trace with hash 763839277, now seen corresponding path program 1 times [2021-10-20 05:30:25,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 05:30:25,157 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494178068] [2021-10-20 05:30:25,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:30:25,158 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 05:30:25,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:30:25,230 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-20 05:30:25,230 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 05:30:25,231 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494178068] [2021-10-20 05:30:25,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494178068] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-20 05:30:25,231 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:30:25,231 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-20 05:30:25,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948999395] [2021-10-20 05:30:25,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-20 05:30:25,233 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 05:30:25,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-20 05:30:25,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-20 05:30:25,234 INFO L87 Difference]: Start difference. First operand 429 states and 682 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:30:25,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:30:25,675 INFO L93 Difference]: Finished difference Result 999 states and 1596 transitions. [2021-10-20 05:30:25,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-20 05:30:25,676 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2021-10-20 05:30:25,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:30:25,681 INFO L225 Difference]: With dead ends: 999 [2021-10-20 05:30:25,681 INFO L226 Difference]: Without dead ends: 571 [2021-10-20 05:30:25,683 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-20 05:30:25,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2021-10-20 05:30:25,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 571. [2021-10-20 05:30:25,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 571 states, 570 states have (on average 1.5105263157894737) internal successors, (861), 570 states have internal predecessors, (861), 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) [2021-10-20 05:30:25,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 861 transitions. [2021-10-20 05:30:25,711 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 861 transitions. Word has length 87 [2021-10-20 05:30:25,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:30:25,711 INFO L470 AbstractCegarLoop]: Abstraction has 571 states and 861 transitions. [2021-10-20 05:30:25,712 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:30:25,712 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 861 transitions. [2021-10-20 05:30:25,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-10-20 05:30:25,716 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:30:25,716 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 05:30:25,716 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-20 05:30:25,717 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 05:30:25,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:30:25,717 INFO L82 PathProgramCache]: Analyzing trace with hash -2013622683, now seen corresponding path program 1 times [2021-10-20 05:30:25,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 05:30:25,718 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912350734] [2021-10-20 05:30:25,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:30:25,718 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 05:30:25,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:30:25,796 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:30:25,796 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 05:30:25,796 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912350734] [2021-10-20 05:30:25,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912350734] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-20 05:30:25,797 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:30:25,797 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-20 05:30:25,797 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142944809] [2021-10-20 05:30:25,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-20 05:30:25,798 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 05:30:25,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-20 05:30:25,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-20 05:30:25,799 INFO L87 Difference]: Start difference. First operand 571 states and 861 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 3 states have internal predecessors, (90), 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) [2021-10-20 05:30:26,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:30:26,351 INFO L93 Difference]: Finished difference Result 1425 states and 2113 transitions. [2021-10-20 05:30:26,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-20 05:30:26,351 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 3 states have internal predecessors, (90), 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 90 [2021-10-20 05:30:26,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:30:26,357 INFO L225 Difference]: With dead ends: 1425 [2021-10-20 05:30:26,357 INFO L226 Difference]: Without dead ends: 855 [2021-10-20 05:30:26,358 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.7ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-20 05:30:26,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2021-10-20 05:30:26,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 784. [2021-10-20 05:30:26,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 784 states, 783 states have (on average 1.4559386973180077) internal successors, (1140), 783 states have internal predecessors, (1140), 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) [2021-10-20 05:30:26,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 1140 transitions. [2021-10-20 05:30:26,408 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 1140 transitions. Word has length 90 [2021-10-20 05:30:26,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:30:26,409 INFO L470 AbstractCegarLoop]: Abstraction has 784 states and 1140 transitions. [2021-10-20 05:30:26,409 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 3 states have internal predecessors, (90), 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) [2021-10-20 05:30:26,409 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 1140 transitions. [2021-10-20 05:30:26,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-10-20 05:30:26,412 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:30:26,412 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 05:30:26,412 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-20 05:30:26,412 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 05:30:26,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:30:26,413 INFO L82 PathProgramCache]: Analyzing trace with hash 683568294, now seen corresponding path program 1 times [2021-10-20 05:30:26,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 05:30:26,414 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998543996] [2021-10-20 05:30:26,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:30:26,414 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 05:30:26,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:30:26,502 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:30:26,503 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 05:30:26,503 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998543996] [2021-10-20 05:30:26,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998543996] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-20 05:30:26,503 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:30:26,504 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-20 05:30:26,504 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792671064] [2021-10-20 05:30:26,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-20 05:30:26,505 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 05:30:26,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-20 05:30:26,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-20 05:30:26,506 INFO L87 Difference]: Start difference. First operand 784 states and 1140 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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) [2021-10-20 05:30:26,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:30:26,807 INFO L93 Difference]: Finished difference Result 1567 states and 2279 transitions. [2021-10-20 05:30:26,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-20 05:30:26,808 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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 108 [2021-10-20 05:30:26,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:30:26,813 INFO L225 Difference]: With dead ends: 1567 [2021-10-20 05:30:26,813 INFO L226 Difference]: Without dead ends: 784 [2021-10-20 05:30:26,814 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-20 05:30:26,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 784 states. [2021-10-20 05:30:26,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 784 to 642. [2021-10-20 05:30:26,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 641 states have (on average 1.329173166926677) internal successors, (852), 641 states have internal predecessors, (852), 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) [2021-10-20 05:30:26,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 852 transitions. [2021-10-20 05:30:26,845 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 852 transitions. Word has length 108 [2021-10-20 05:30:26,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:30:26,845 INFO L470 AbstractCegarLoop]: Abstraction has 642 states and 852 transitions. [2021-10-20 05:30:26,846 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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) [2021-10-20 05:30:26,846 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 852 transitions. [2021-10-20 05:30:26,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-10-20 05:30:26,849 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:30:26,849 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 05:30:26,849 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-20 05:30:26,850 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 05:30:26,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:30:26,850 INFO L82 PathProgramCache]: Analyzing trace with hash -1573514720, now seen corresponding path program 1 times [2021-10-20 05:30:26,851 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 05:30:26,856 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22805862] [2021-10-20 05:30:26,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:30:26,857 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 05:30:26,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:30:27,013 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-10-20 05:30:27,013 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 05:30:27,013 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22805862] [2021-10-20 05:30:27,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22805862] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-20 05:30:27,014 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:30:27,014 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-20 05:30:27,015 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228872486] [2021-10-20 05:30:27,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-20 05:30:27,016 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 05:30:27,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-20 05:30:27,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-20 05:30:27,017 INFO L87 Difference]: Start difference. First operand 642 states and 852 transitions. Second operand has 4 states, 4 states have (on average 30.0) internal successors, (120), 3 states have internal predecessors, (120), 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) [2021-10-20 05:30:27,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:30:27,549 INFO L93 Difference]: Finished difference Result 1567 states and 2095 transitions. [2021-10-20 05:30:27,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-20 05:30:27,550 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 3 states have internal predecessors, (120), 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 145 [2021-10-20 05:30:27,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:30:27,557 INFO L225 Difference]: With dead ends: 1567 [2021-10-20 05:30:27,557 INFO L226 Difference]: Without dead ends: 926 [2021-10-20 05:30:27,559 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.8ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-20 05:30:27,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2021-10-20 05:30:27,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 855. [2021-10-20 05:30:27,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 855 states, 854 states have (on average 1.2822014051522248) internal successors, (1095), 854 states have internal predecessors, (1095), 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) [2021-10-20 05:30:27,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1095 transitions. [2021-10-20 05:30:27,589 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1095 transitions. Word has length 145 [2021-10-20 05:30:27,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:30:27,591 INFO L470 AbstractCegarLoop]: Abstraction has 855 states and 1095 transitions. [2021-10-20 05:30:27,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 3 states have internal predecessors, (120), 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) [2021-10-20 05:30:27,592 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1095 transitions. [2021-10-20 05:30:27,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-10-20 05:30:27,595 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:30:27,595 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 05:30:27,596 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-20 05:30:27,598 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 05:30:27,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:30:27,599 INFO L82 PathProgramCache]: Analyzing trace with hash -1653698687, now seen corresponding path program 1 times [2021-10-20 05:30:27,599 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 05:30:27,600 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005761778] [2021-10-20 05:30:27,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:30:27,600 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 05:30:27,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:30:27,767 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 106 proven. 11 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-10-20 05:30:27,768 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 05:30:27,768 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005761778] [2021-10-20 05:30:27,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005761778] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-20 05:30:27,769 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1195105148] [2021-10-20 05:30:27,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:30:27,769 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-20 05:30:27,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e3d3e-52bb-46b8-8e0d-243ebda06cdb/bin/utaipan-tZwUujhuQw/z3 [2021-10-20 05:30:27,776 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e3d3e-52bb-46b8-8e0d-243ebda06cdb/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-20 05:30:27,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e3d3e-52bb-46b8-8e0d-243ebda06cdb/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-20 05:30:27,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:30:27,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-20 05:30:27,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 05:30:28,530 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-10-20 05:30:28,530 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 05:30:29,025 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-10-20 05:30:29,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1195105148] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-20 05:30:29,026 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-20 05:30:29,026 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 5 [2021-10-20 05:30:29,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470150874] [2021-10-20 05:30:29,027 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-20 05:30:29,027 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 05:30:29,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-20 05:30:29,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-20 05:30:29,029 INFO L87 Difference]: Start difference. First operand 855 states and 1095 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 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) [2021-10-20 05:30:29,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:30:29,395 INFO L93 Difference]: Finished difference Result 1354 states and 1702 transitions. [2021-10-20 05:30:29,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-20 05:30:29,396 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 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 158 [2021-10-20 05:30:29,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:30:29,407 INFO L225 Difference]: With dead ends: 1354 [2021-10-20 05:30:29,407 INFO L226 Difference]: Without dead ends: 1352 [2021-10-20 05:30:29,409 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 314 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.9ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-20 05:30:29,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1352 states. [2021-10-20 05:30:29,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1352 to 1352. [2021-10-20 05:30:29,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1352 states, 1351 states have (on average 1.2583271650629164) internal successors, (1700), 1351 states have internal predecessors, (1700), 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) [2021-10-20 05:30:29,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 1700 transitions. [2021-10-20 05:30:29,457 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 1700 transitions. Word has length 158 [2021-10-20 05:30:29,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:30:29,458 INFO L470 AbstractCegarLoop]: Abstraction has 1352 states and 1700 transitions. [2021-10-20 05:30:29,458 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 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) [2021-10-20 05:30:29,458 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 1700 transitions. [2021-10-20 05:30:29,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-10-20 05:30:29,463 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:30:29,464 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 05:30:29,508 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e3d3e-52bb-46b8-8e0d-243ebda06cdb/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-20 05:30:29,686 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e3d3e-52bb-46b8-8e0d-243ebda06cdb/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-20 05:30:29,687 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 05:30:29,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:30:29,688 INFO L82 PathProgramCache]: Analyzing trace with hash -274598669, now seen corresponding path program 1 times [2021-10-20 05:30:29,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 05:30:29,688 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495561086] [2021-10-20 05:30:29,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:30:29,688 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 05:30:29,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:30:29,782 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2021-10-20 05:30:29,782 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 05:30:29,785 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495561086] [2021-10-20 05:30:29,785 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495561086] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-20 05:30:29,785 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:30:29,785 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-20 05:30:29,786 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699854124] [2021-10-20 05:30:29,786 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-20 05:30:29,786 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 05:30:29,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-20 05:30:29,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-20 05:30:29,787 INFO L87 Difference]: Start difference. First operand 1352 states and 1700 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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) [2021-10-20 05:30:30,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:30:30,211 INFO L93 Difference]: Finished difference Result 2987 states and 3767 transitions. [2021-10-20 05:30:30,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-20 05:30:30,212 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 175 [2021-10-20 05:30:30,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:30:30,223 INFO L225 Difference]: With dead ends: 2987 [2021-10-20 05:30:30,223 INFO L226 Difference]: Without dead ends: 1494 [2021-10-20 05:30:30,226 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-20 05:30:30,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1494 states. [2021-10-20 05:30:30,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1494 to 1352. [2021-10-20 05:30:30,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1352 states, 1351 states have (on average 1.151739452257587) internal successors, (1556), 1351 states have internal predecessors, (1556), 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) [2021-10-20 05:30:30,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 1556 transitions. [2021-10-20 05:30:30,277 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 1556 transitions. Word has length 175 [2021-10-20 05:30:30,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:30:30,278 INFO L470 AbstractCegarLoop]: Abstraction has 1352 states and 1556 transitions. [2021-10-20 05:30:30,278 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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) [2021-10-20 05:30:30,278 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 1556 transitions. [2021-10-20 05:30:30,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-10-20 05:30:30,283 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:30:30,284 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 05:30:30,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-20 05:30:30,284 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 05:30:30,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:30:30,285 INFO L82 PathProgramCache]: Analyzing trace with hash -1572857775, now seen corresponding path program 1 times [2021-10-20 05:30:30,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 05:30:30,285 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025649809] [2021-10-20 05:30:30,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:30:30,286 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 05:30:30,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:30:30,416 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 156 proven. 11 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2021-10-20 05:30:30,417 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 05:30:30,417 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025649809] [2021-10-20 05:30:30,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025649809] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-20 05:30:30,424 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1374408384] [2021-10-20 05:30:30,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:30:30,424 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-20 05:30:30,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e3d3e-52bb-46b8-8e0d-243ebda06cdb/bin/utaipan-tZwUujhuQw/z3 [2021-10-20 05:30:30,430 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e3d3e-52bb-46b8-8e0d-243ebda06cdb/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-20 05:30:30,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e3d3e-52bb-46b8-8e0d-243ebda06cdb/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-20 05:30:30,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:30:30,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-20 05:30:30,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 05:30:31,362 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 213 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-10-20 05:30:31,362 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 05:30:32,002 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 213 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-10-20 05:30:32,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1374408384] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-20 05:30:32,002 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-20 05:30:32,003 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 5 [2021-10-20 05:30:32,003 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483163114] [2021-10-20 05:30:32,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-20 05:30:32,004 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 05:30:32,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-20 05:30:32,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-20 05:30:32,007 INFO L87 Difference]: Start difference. First operand 1352 states and 1556 transitions. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:30:32,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:30:32,372 INFO L93 Difference]: Finished difference Result 3058 states and 3527 transitions. [2021-10-20 05:30:32,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-20 05:30:32,373 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 195 [2021-10-20 05:30:32,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:30:32,384 INFO L225 Difference]: With dead ends: 3058 [2021-10-20 05:30:32,384 INFO L226 Difference]: Without dead ends: 1707 [2021-10-20 05:30:32,387 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 388 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.1ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-20 05:30:32,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1707 states. [2021-10-20 05:30:32,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1707 to 1636. [2021-10-20 05:30:32,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1636 states, 1635 states have (on average 1.1535168195718655) internal successors, (1886), 1635 states have internal predecessors, (1886), 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) [2021-10-20 05:30:32,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1636 states to 1636 states and 1886 transitions. [2021-10-20 05:30:32,454 INFO L78 Accepts]: Start accepts. Automaton has 1636 states and 1886 transitions. Word has length 195 [2021-10-20 05:30:32,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:30:32,454 INFO L470 AbstractCegarLoop]: Abstraction has 1636 states and 1886 transitions. [2021-10-20 05:30:32,455 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:30:32,455 INFO L276 IsEmpty]: Start isEmpty. Operand 1636 states and 1886 transitions. [2021-10-20 05:30:32,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2021-10-20 05:30:32,462 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:30:32,462 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 05:30:32,510 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e3d3e-52bb-46b8-8e0d-243ebda06cdb/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-20 05:30:32,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e3d3e-52bb-46b8-8e0d-243ebda06cdb/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-10-20 05:30:32,679 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 05:30:32,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:30:32,680 INFO L82 PathProgramCache]: Analyzing trace with hash -745261729, now seen corresponding path program 1 times [2021-10-20 05:30:32,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 05:30:32,680 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370435881] [2021-10-20 05:30:32,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:30:32,681 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 05:30:32,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:30:32,824 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 161 proven. 11 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2021-10-20 05:30:32,824 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 05:30:32,824 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370435881] [2021-10-20 05:30:32,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370435881] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-20 05:30:32,825 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1503245760] [2021-10-20 05:30:32,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:30:32,825 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-20 05:30:32,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e3d3e-52bb-46b8-8e0d-243ebda06cdb/bin/utaipan-tZwUujhuQw/z3 [2021-10-20 05:30:32,828 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e3d3e-52bb-46b8-8e0d-243ebda06cdb/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-20 05:30:32,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e3d3e-52bb-46b8-8e0d-243ebda06cdb/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-20 05:30:33,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:30:33,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-20 05:30:33,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 05:30:33,966 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 209 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-10-20 05:30:33,966 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 05:30:34,535 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 209 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-10-20 05:30:34,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1503245760] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-20 05:30:34,535 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-20 05:30:34,536 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 5 [2021-10-20 05:30:34,536 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453641249] [2021-10-20 05:30:34,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-20 05:30:34,537 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 05:30:34,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-20 05:30:34,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-20 05:30:34,538 INFO L87 Difference]: Start difference. First operand 1636 states and 1886 transitions. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:30:34,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:30:34,881 INFO L93 Difference]: Finished difference Result 3198 states and 3685 transitions. [2021-10-20 05:30:34,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-20 05:30:34,882 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 200 [2021-10-20 05:30:34,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:30:34,883 INFO L225 Difference]: With dead ends: 3198 [2021-10-20 05:30:34,883 INFO L226 Difference]: Without dead ends: 0 [2021-10-20 05:30:34,887 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 398 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.4ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-20 05:30:34,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-20 05:30:34,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-20 05:30:34,888 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) [2021-10-20 05:30:34,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-20 05:30:34,888 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 200 [2021-10-20 05:30:34,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:30:34,889 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-20 05:30:34,889 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:30:34,889 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-20 05:30:34,889 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-20 05:30:34,892 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-20 05:30:34,941 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e3d3e-52bb-46b8-8e0d-243ebda06cdb/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-20 05:30:35,108 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e3d3e-52bb-46b8-8e0d-243ebda06cdb/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-10-20 05:30:35,110 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-20 05:30:35,114 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 05:30:35,147 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 05:30:35,148 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 05:30:35,504 INFO L857 garLoopResultBuilder]: For program point L102(lines 102 400) no Hoare annotation was computed. [2021-10-20 05:30:35,505 INFO L857 garLoopResultBuilder]: For program point L598(line 598) no Hoare annotation was computed. [2021-10-20 05:30:35,505 INFO L857 garLoopResultBuilder]: For program point L334(lines 334 400) no Hoare annotation was computed. [2021-10-20 05:30:35,505 INFO L857 garLoopResultBuilder]: For program point L302(lines 302 400) no Hoare annotation was computed. [2021-10-20 05:30:35,505 INFO L857 garLoopResultBuilder]: For program point L170(lines 170 400) no Hoare annotation was computed. [2021-10-20 05:30:35,505 INFO L857 garLoopResultBuilder]: For program point L204(lines 204 400) no Hoare annotation was computed. [2021-10-20 05:30:35,506 INFO L857 garLoopResultBuilder]: For program point L72(lines 72 400) no Hoare annotation was computed. [2021-10-20 05:30:35,506 INFO L857 garLoopResultBuilder]: For program point L271(lines 271 400) no Hoare annotation was computed. [2021-10-20 05:30:35,506 INFO L857 garLoopResultBuilder]: For program point L139(lines 139 400) no Hoare annotation was computed. [2021-10-20 05:30:35,506 INFO L857 garLoopResultBuilder]: For program point L371(lines 371 400) no Hoare annotation was computed. [2021-10-20 05:30:35,507 INFO L857 garLoopResultBuilder]: For program point L107(lines 107 400) no Hoare annotation was computed. [2021-10-20 05:30:35,507 INFO L857 garLoopResultBuilder]: For program point L41(lines 41 400) no Hoare annotation was computed. [2021-10-20 05:30:35,507 INFO L857 garLoopResultBuilder]: For program point L339(lines 339 400) no Hoare annotation was computed. [2021-10-20 05:30:35,507 INFO L857 garLoopResultBuilder]: For program point L207(lines 207 400) no Hoare annotation was computed. [2021-10-20 05:30:35,507 INFO L857 garLoopResultBuilder]: For program point L75(lines 75 400) no Hoare annotation was computed. [2021-10-20 05:30:35,508 INFO L857 garLoopResultBuilder]: For program point L373(lines 373 400) no Hoare annotation was computed. [2021-10-20 05:30:35,508 INFO L857 garLoopResultBuilder]: For program point L241(lines 241 400) no Hoare annotation was computed. [2021-10-20 05:30:35,508 INFO L857 garLoopResultBuilder]: For program point L175(lines 175 400) no Hoare annotation was computed. [2021-10-20 05:30:35,508 INFO L857 garLoopResultBuilder]: For program point L275(lines 275 400) no Hoare annotation was computed. [2021-10-20 05:30:35,508 INFO L857 garLoopResultBuilder]: For program point L375(lines 375 400) no Hoare annotation was computed. [2021-10-20 05:30:35,509 INFO L857 garLoopResultBuilder]: For program point L309(lines 309 400) no Hoare annotation was computed. [2021-10-20 05:30:35,509 INFO L857 garLoopResultBuilder]: For program point L45(lines 45 400) no Hoare annotation was computed. [2021-10-20 05:30:35,509 INFO L857 garLoopResultBuilder]: For program point L343(lines 343 400) no Hoare annotation was computed. [2021-10-20 05:30:35,509 INFO L857 garLoopResultBuilder]: For program point L112(lines 112 400) no Hoare annotation was computed. [2021-10-20 05:30:35,509 INFO L857 garLoopResultBuilder]: For program point L278(lines 278 400) no Hoare annotation was computed. [2021-10-20 05:30:35,510 INFO L857 garLoopResultBuilder]: For program point L146(lines 146 400) no Hoare annotation was computed. [2021-10-20 05:30:35,510 INFO L857 garLoopResultBuilder]: For program point L213(lines 213 400) no Hoare annotation was computed. [2021-10-20 05:30:35,510 INFO L857 garLoopResultBuilder]: For program point L82(lines 82 400) no Hoare annotation was computed. [2021-10-20 05:30:35,510 INFO L857 garLoopResultBuilder]: For program point L347(lines 347 400) no Hoare annotation was computed. [2021-10-20 05:30:35,510 INFO L857 garLoopResultBuilder]: For program point L248(lines 248 400) no Hoare annotation was computed. [2021-10-20 05:30:35,511 INFO L857 garLoopResultBuilder]: For program point L183(lines 183 400) no Hoare annotation was computed. [2021-10-20 05:30:35,511 INFO L857 garLoopResultBuilder]: For program point L150(lines 150 400) no Hoare annotation was computed. [2021-10-20 05:30:35,511 INFO L857 garLoopResultBuilder]: For program point L382(lines 382 400) no Hoare annotation was computed. [2021-10-20 05:30:35,511 INFO L857 garLoopResultBuilder]: For program point L316(lines 316 400) no Hoare annotation was computed. [2021-10-20 05:30:35,512 INFO L857 garLoopResultBuilder]: For program point L283(lines 283 400) no Hoare annotation was computed. [2021-10-20 05:30:35,512 INFO L857 garLoopResultBuilder]: For program point L118(lines 118 400) no Hoare annotation was computed. [2021-10-20 05:30:35,512 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-20 05:30:35,512 INFO L857 garLoopResultBuilder]: For program point L218(lines 218 400) no Hoare annotation was computed. [2021-10-20 05:30:35,512 INFO L857 garLoopResultBuilder]: For program point L53(lines 53 400) no Hoare annotation was computed. [2021-10-20 05:30:35,513 INFO L857 garLoopResultBuilder]: For program point L154(lines 154 400) no Hoare annotation was computed. [2021-10-20 05:30:35,513 INFO L853 garLoopResultBuilder]: At program point L584(lines 40 585) the Hoare annotation is: (let ((.cse1 (<= ~a20~0 0)) (.cse4 (<= ~a16~0 5)) (.cse0 (<= ~a7~0 0)) (.cse3 (= ~a17~0 1)) (.cse6 (= ~a20~0 1)) (.cse7 (<= ~a8~0 13)) (.cse2 (= ~a21~0 1)) (.cse5 (= ~a17~0 0))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse1 .cse2 .cse3 .cse4) (and .cse1 .cse2 .cse5) (and (<= 5 ~a16~0) .cse2 .cse6 .cse5) (and .cse7 .cse6 .cse5) (and .cse7 .cse2 .cse3 .cse6) (and .cse1 .cse7 .cse3 .cse4) (and .cse0 .cse2 .cse6 .cse5) (and .cse7 .cse3 .cse4 .cse6) (and .cse0 .cse2 .cse3 .cse6) (and .cse7 .cse2 .cse5))) [2021-10-20 05:30:35,513 INFO L857 garLoopResultBuilder]: For program point L188(lines 188 400) no Hoare annotation was computed. [2021-10-20 05:30:35,514 INFO L857 garLoopResultBuilder]: For program point L387(lines 387 400) no Hoare annotation was computed. [2021-10-20 05:30:35,514 INFO L857 garLoopResultBuilder]: For program point L288(lines 288 400) no Hoare annotation was computed. [2021-10-20 05:30:35,514 INFO L857 garLoopResultBuilder]: For program point L255(lines 255 400) no Hoare annotation was computed. [2021-10-20 05:30:35,514 INFO L857 garLoopResultBuilder]: For program point L90(lines 90 400) no Hoare annotation was computed. [2021-10-20 05:30:35,514 INFO L857 garLoopResultBuilder]: For program point L355(lines 355 400) no Hoare annotation was computed. [2021-10-20 05:30:35,515 INFO L857 garLoopResultBuilder]: For program point L322(lines 322 400) no Hoare annotation was computed. [2021-10-20 05:30:35,515 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-20 05:30:35,515 INFO L857 garLoopResultBuilder]: For program point L124(lines 124 400) no Hoare annotation was computed. [2021-10-20 05:30:35,515 INFO L860 garLoopResultBuilder]: At program point L587(lines 587 604) the Hoare annotation is: true [2021-10-20 05:30:35,515 INFO L857 garLoopResultBuilder]: For program point L224(lines 224 400) no Hoare annotation was computed. [2021-10-20 05:30:35,516 INFO L857 garLoopResultBuilder]: For program point L158(lines 158 400) no Hoare annotation was computed. [2021-10-20 05:30:35,516 INFO L857 garLoopResultBuilder]: For program point L59(lines 59 400) no Hoare annotation was computed. [2021-10-20 05:30:35,516 INFO L857 garLoopResultBuilder]: For program point L94(lines 94 400) no Hoare annotation was computed. [2021-10-20 05:30:35,516 INFO L857 garLoopResultBuilder]: For program point L458-1(lines 40 585) no Hoare annotation was computed. [2021-10-20 05:30:35,517 INFO L857 garLoopResultBuilder]: For program point L392(lines 392 400) no Hoare annotation was computed. [2021-10-20 05:30:35,517 INFO L857 garLoopResultBuilder]: For program point L326(lines 326 400) no Hoare annotation was computed. [2021-10-20 05:30:35,517 INFO L857 garLoopResultBuilder]: For program point L260(lines 260 400) no Hoare annotation was computed. [2021-10-20 05:30:35,517 INFO L857 garLoopResultBuilder]: For program point L228(lines 228 400) no Hoare annotation was computed. [2021-10-20 05:30:35,517 INFO L857 garLoopResultBuilder]: For program point L162(lines 162 400) no Hoare annotation was computed. [2021-10-20 05:30:35,518 INFO L857 garLoopResultBuilder]: For program point L129(lines 129 400) no Hoare annotation was computed. [2021-10-20 05:30:35,518 INFO L857 garLoopResultBuilder]: For program point L328(lines 328 400) no Hoare annotation was computed. [2021-10-20 05:30:35,518 INFO L857 garLoopResultBuilder]: For program point L196(lines 196 400) no Hoare annotation was computed. [2021-10-20 05:30:35,518 INFO L857 garLoopResultBuilder]: For program point L64(lines 64 400) no Hoare annotation was computed. [2021-10-20 05:30:35,519 INFO L853 garLoopResultBuilder]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse1 (<= ~a20~0 0)) (.cse4 (<= ~a16~0 5)) (.cse0 (<= ~a7~0 0)) (.cse3 (= ~a17~0 1)) (.cse6 (= ~a20~0 1)) (.cse7 (<= ~a8~0 13)) (.cse2 (= ~a21~0 1)) (.cse5 (= ~a17~0 0))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse1 .cse2 .cse3 .cse4) (and .cse1 .cse2 .cse5) (and (<= 5 ~a16~0) .cse2 .cse6 .cse5) (and .cse7 .cse6 .cse5) (and .cse7 .cse2 .cse3 .cse6) (and .cse1 .cse7 .cse3 .cse4) (and .cse0 .cse2 .cse6 .cse5) (and .cse7 .cse3 .cse4 .cse6) (and .cse0 .cse2 .cse3 .cse6) (and .cse7 .cse2 .cse5))) [2021-10-20 05:30:35,519 INFO L857 garLoopResultBuilder]: For program point L461-1(lines 40 585) no Hoare annotation was computed. [2021-10-20 05:30:35,519 INFO L857 garLoopResultBuilder]: For program point L296(lines 296 400) no Hoare annotation was computed. [2021-10-20 05:30:35,519 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 462) no Hoare annotation was computed. [2021-10-20 05:30:35,519 INFO L857 garLoopResultBuilder]: For program point L462(line 462) no Hoare annotation was computed. [2021-10-20 05:30:35,520 INFO L857 garLoopResultBuilder]: For program point L363(lines 363 400) no Hoare annotation was computed. [2021-10-20 05:30:35,520 INFO L857 garLoopResultBuilder]: For program point L199(lines 199 400) no Hoare annotation was computed. [2021-10-20 05:30:35,520 INFO L857 garLoopResultBuilder]: For program point L365(lines 365 400) no Hoare annotation was computed. [2021-10-20 05:30:35,520 INFO L857 garLoopResultBuilder]: For program point L266(lines 266 400) no Hoare annotation was computed. [2021-10-20 05:30:35,520 INFO L857 garLoopResultBuilder]: For program point L233(lines 233 400) no Hoare annotation was computed. [2021-10-20 05:30:35,521 INFO L857 garLoopResultBuilder]: For program point L134(lines 134 400) no Hoare annotation was computed. [2021-10-20 05:30:35,526 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-20 05:30:35,550 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 05:30:35 BoogieIcfgContainer [2021-10-20 05:30:35,550 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-20 05:30:35,551 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-20 05:30:35,551 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-20 05:30:35,552 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-20 05:30:35,552 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:30:22" (3/4) ... [2021-10-20 05:30:35,556 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-20 05:30:35,586 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 108 nodes and edges [2021-10-20 05:30:35,588 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2021-10-20 05:30:35,590 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-10-20 05:30:35,592 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-20 05:30:35,735 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e3d3e-52bb-46b8-8e0d-243ebda06cdb/bin/utaipan-tZwUujhuQw/witness.graphml [2021-10-20 05:30:35,736 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-20 05:30:35,737 INFO L168 Benchmark]: Toolchain (without parser) took 16652.98 ms. Allocated memory was 96.5 MB in the beginning and 226.5 MB in the end (delta: 130.0 MB). Free memory was 61.7 MB in the beginning and 171.6 MB in the end (delta: -110.0 MB). Peak memory consumption was 18.8 MB. Max. memory is 16.1 GB. [2021-10-20 05:30:35,738 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 96.5 MB. Free memory is still 49.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-20 05:30:35,738 INFO L168 Benchmark]: CACSL2BoogieTranslator took 686.45 ms. Allocated memory is still 96.5 MB. Free memory was 61.5 MB in the beginning and 55.6 MB in the end (delta: 5.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-20 05:30:35,739 INFO L168 Benchmark]: Boogie Procedure Inliner took 114.27 ms. Allocated memory is still 96.5 MB. Free memory was 55.6 MB in the beginning and 50.0 MB in the end (delta: 5.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-20 05:30:35,739 INFO L168 Benchmark]: Boogie Preprocessor took 112.37 ms. Allocated memory was 96.5 MB in the beginning and 123.7 MB in the end (delta: 27.3 MB). Free memory was 50.0 MB in the beginning and 96.2 MB in the end (delta: -46.2 MB). Peak memory consumption was 11.9 MB. Max. memory is 16.1 GB. [2021-10-20 05:30:35,740 INFO L168 Benchmark]: RCFGBuilder took 2292.89 ms. Allocated memory is still 123.7 MB. Free memory was 96.2 MB in the beginning and 47.8 MB in the end (delta: 48.4 MB). Peak memory consumption was 60.8 MB. Max. memory is 16.1 GB. [2021-10-20 05:30:35,740 INFO L168 Benchmark]: TraceAbstraction took 13253.27 ms. Allocated memory was 123.7 MB in the beginning and 226.5 MB in the end (delta: 102.8 MB). Free memory was 46.6 MB in the beginning and 187.4 MB in the end (delta: -140.8 MB). Peak memory consumption was 66.7 MB. Max. memory is 16.1 GB. [2021-10-20 05:30:35,741 INFO L168 Benchmark]: Witness Printer took 184.61 ms. Allocated memory is still 226.5 MB. Free memory was 186.3 MB in the beginning and 171.6 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-20 05:30:35,743 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 96.5 MB. Free memory is still 49.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 686.45 ms. Allocated memory is still 96.5 MB. Free memory was 61.5 MB in the beginning and 55.6 MB in the end (delta: 5.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 114.27 ms. Allocated memory is still 96.5 MB. Free memory was 55.6 MB in the beginning and 50.0 MB in the end (delta: 5.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 112.37 ms. Allocated memory was 96.5 MB in the beginning and 123.7 MB in the end (delta: 27.3 MB). Free memory was 50.0 MB in the beginning and 96.2 MB in the end (delta: -46.2 MB). Peak memory consumption was 11.9 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2292.89 ms. Allocated memory is still 123.7 MB. Free memory was 96.2 MB in the beginning and 47.8 MB in the end (delta: 48.4 MB). Peak memory consumption was 60.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 13253.27 ms. Allocated memory was 123.7 MB in the beginning and 226.5 MB in the end (delta: 102.8 MB). Free memory was 46.6 MB in the beginning and 187.4 MB in the end (delta: -140.8 MB). Peak memory consumption was 66.7 MB. Max. memory is 16.1 GB. * Witness Printer took 184.61 ms. Allocated memory is still 226.5 MB. Free memory was 186.3 MB in the beginning and 171.6 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms 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: 462]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 13137.5ms, OverallIterations: 11, TraceHistogramMax: 6, EmptinessCheckTime: 76.4ms, AutomataDifference: 5081.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 395.6ms, InitialAbstractionConstructionTime: 20.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 605 SDtfs, 695 SDslu, 49 SDs, 0 SdLazy, 2669 SolverSat, 667 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3550.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1132 GetRequests, 1110 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 94.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=1636occurred in iteration=10, InterpolantAutomatonStates: 35, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 460.3ms AutomataMinimizationTime, 11 MinimizatonAttempts, 568 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 53 NumberOfFragments, 271 HoareAnnotationTreeSize, 3 FomulaSimplifications, 1912 FormulaSimplificationTreeSizeReduction, 61.7ms HoareSimplificationTime, 3 FomulaSimplificationsInter, 128 FormulaSimplificationTreeSizeReductionInter, 325.9ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 203.7ms SsaConstructionTime, 585.3ms SatisfiabilityAnalysisTime, 4678.5ms InterpolantComputationTime, 1944 NumberOfCodeBlocks, 1944 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 2480 ConstructedInterpolants, 0 QuantifiedInterpolants, 4931 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1296 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 17 InterpolantComputations, 14 PerfectInterpolantSequences, 2302/2335 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: ((((((((((((a7 <= 0 && a20 <= 0) && a21 == 1) && a17 == 1) || (((a20 <= 0 && a21 == 1) && a17 == 1) && a16 <= 5)) || ((a20 <= 0 && a21 == 1) && a17 == 0)) || (((5 <= a16 && a21 == 1) && a20 == 1) && a17 == 0)) || ((a8 <= 13 && a20 == 1) && a17 == 0)) || (((a8 <= 13 && a21 == 1) && a17 == 1) && a20 == 1)) || (((a20 <= 0 && a8 <= 13) && a17 == 1) && a16 <= 5)) || (((a7 <= 0 && a21 == 1) && a20 == 1) && a17 == 0)) || (((a8 <= 13 && a17 == 1) && a16 <= 5) && a20 == 1)) || (((a7 <= 0 && a21 == 1) && a17 == 1) && a20 == 1)) || ((a8 <= 13 && a21 == 1) && a17 == 0) - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: ((((((((((((a7 <= 0 && a20 <= 0) && a21 == 1) && a17 == 1) || (((a20 <= 0 && a21 == 1) && a17 == 1) && a16 <= 5)) || ((a20 <= 0 && a21 == 1) && a17 == 0)) || (((5 <= a16 && a21 == 1) && a20 == 1) && a17 == 0)) || ((a8 <= 13 && a20 == 1) && a17 == 0)) || (((a8 <= 13 && a21 == 1) && a17 == 1) && a20 == 1)) || (((a20 <= 0 && a8 <= 13) && a17 == 1) && a16 <= 5)) || (((a7 <= 0 && a21 == 1) && a20 == 1) && a17 == 0)) || (((a8 <= 13 && a17 == 1) && a16 <= 5) && a20 == 1)) || (((a7 <= 0 && a21 == 1) && a17 == 1) && a20 == 1)) || ((a8 <= 13 && a21 == 1) && a17 == 0) RESULT: Ultimate proved your program to be correct! [2021-10-20 05:30:35,800 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e3d3e-52bb-46b8-8e0d-243ebda06cdb/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...