./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label45.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_b7919837-826b-4bbc-948a-df6ae852a3b9/bin/utaipan-tZwUujhuQw/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7919837-826b-4bbc-948a-df6ae852a3b9/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_b7919837-826b-4bbc-948a-df6ae852a3b9/bin/utaipan-tZwUujhuQw/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7919837-826b-4bbc-948a-df6ae852a3b9/bin/utaipan-tZwUujhuQw/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label45.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7919837-826b-4bbc-948a-df6ae852a3b9/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_b7919837-826b-4bbc-948a-df6ae852a3b9/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 b8e8aa0b516ef9fd60c8444f7020a693e2ee03ee59580de825705d1497a8a117 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 06:12:10,182 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-20 06:12:10,185 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-20 06:12:10,253 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-20 06:12:10,254 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-20 06:12:10,259 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-20 06:12:10,261 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-20 06:12:10,266 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-20 06:12:10,268 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-20 06:12:10,277 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-20 06:12:10,278 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-20 06:12:10,279 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-20 06:12:10,280 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-20 06:12:10,281 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-20 06:12:10,283 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-20 06:12:10,284 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-20 06:12:10,285 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-20 06:12:10,286 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-20 06:12:10,295 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-20 06:12:10,304 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-20 06:12:10,306 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-20 06:12:10,310 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-20 06:12:10,317 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-20 06:12:10,319 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-20 06:12:10,322 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-20 06:12:10,323 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-20 06:12:10,323 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-20 06:12:10,325 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-20 06:12:10,325 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-20 06:12:10,326 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-20 06:12:10,327 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-20 06:12:10,327 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-20 06:12:10,328 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-20 06:12:10,329 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-20 06:12:10,331 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-20 06:12:10,331 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-20 06:12:10,332 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-20 06:12:10,332 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-20 06:12:10,333 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-20 06:12:10,334 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-20 06:12:10,334 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-20 06:12:10,335 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7919837-826b-4bbc-948a-df6ae852a3b9/bin/utaipan-tZwUujhuQw/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-20 06:12:10,382 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-20 06:12:10,382 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-20 06:12:10,386 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-20 06:12:10,386 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-20 06:12:10,386 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-20 06:12:10,387 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-20 06:12:10,387 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-20 06:12:10,387 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-20 06:12:10,394 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-20 06:12:10,395 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-20 06:12:10,396 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-20 06:12:10,396 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-20 06:12:10,396 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-20 06:12:10,397 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-20 06:12:10,397 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-20 06:12:10,398 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-20 06:12:10,398 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-20 06:12:10,398 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-20 06:12:10,398 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-20 06:12:10,399 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-20 06:12:10,399 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-20 06:12:10,399 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-20 06:12:10,399 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-20 06:12:10,400 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-20 06:12:10,400 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-20 06:12:10,400 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-20 06:12:10,400 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-20 06:12:10,401 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-20 06:12:10,401 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-20 06:12:10,401 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-20 06:12:10,401 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-20 06:12:10,402 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-20 06:12:10,402 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-20 06:12:10,402 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-20 06:12:10,402 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-20 06:12:10,403 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-20 06:12:10,403 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-20 06:12:10,403 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-20 06:12:10,403 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-20 06:12:10,403 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_b7919837-826b-4bbc-948a-df6ae852a3b9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7919837-826b-4bbc-948a-df6ae852a3b9/bin/utaipan-tZwUujhuQw Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b8e8aa0b516ef9fd60c8444f7020a693e2ee03ee59580de825705d1497a8a117 [2021-10-20 06:12:10,718 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-20 06:12:10,759 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-20 06:12:10,762 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-20 06:12:10,763 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-20 06:12:10,764 INFO L275 PluginConnector]: CDTParser initialized [2021-10-20 06:12:10,765 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7919837-826b-4bbc-948a-df6ae852a3b9/bin/utaipan-tZwUujhuQw/../../sv-benchmarks/c/eca-rers2012/Problem01_label45.c [2021-10-20 06:12:10,879 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7919837-826b-4bbc-948a-df6ae852a3b9/bin/utaipan-tZwUujhuQw/data/6fbc1669e/797f2c161ca3426085f8f172585d0851/FLAG4c408f198 [2021-10-20 06:12:11,681 INFO L306 CDTParser]: Found 1 translation units. [2021-10-20 06:12:11,682 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7919837-826b-4bbc-948a-df6ae852a3b9/sv-benchmarks/c/eca-rers2012/Problem01_label45.c [2021-10-20 06:12:11,709 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7919837-826b-4bbc-948a-df6ae852a3b9/bin/utaipan-tZwUujhuQw/data/6fbc1669e/797f2c161ca3426085f8f172585d0851/FLAG4c408f198 [2021-10-20 06:12:11,905 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7919837-826b-4bbc-948a-df6ae852a3b9/bin/utaipan-tZwUujhuQw/data/6fbc1669e/797f2c161ca3426085f8f172585d0851 [2021-10-20 06:12:11,908 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-20 06:12:11,912 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-20 06:12:11,917 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-20 06:12:11,918 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-20 06:12:11,922 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-20 06:12:11,924 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:12:11" (1/1) ... [2021-10-20 06:12:11,926 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c683a65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:12:11, skipping insertion in model container [2021-10-20 06:12:11,926 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:12:11" (1/1) ... [2021-10-20 06:12:11,934 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-20 06:12:11,984 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-20 06:12:12,399 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_b7919837-826b-4bbc-948a-df6ae852a3b9/sv-benchmarks/c/eca-rers2012/Problem01_label45.c[20099,20112] [2021-10-20 06:12:12,440 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-20 06:12:12,464 INFO L203 MainTranslator]: Completed pre-run [2021-10-20 06:12:12,592 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_b7919837-826b-4bbc-948a-df6ae852a3b9/sv-benchmarks/c/eca-rers2012/Problem01_label45.c[20099,20112] [2021-10-20 06:12:12,624 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-20 06:12:12,642 INFO L208 MainTranslator]: Completed translation [2021-10-20 06:12:12,642 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:12:12 WrapperNode [2021-10-20 06:12:12,643 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-20 06:12:12,644 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-20 06:12:12,644 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-20 06:12:12,644 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-20 06:12:12,656 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:12:12" (1/1) ... [2021-10-20 06:12:12,686 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:12:12" (1/1) ... [2021-10-20 06:12:12,753 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-20 06:12:12,754 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-20 06:12:12,754 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-20 06:12:12,754 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-20 06:12:12,763 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:12:12" (1/1) ... [2021-10-20 06:12:12,764 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:12:12" (1/1) ... [2021-10-20 06:12:12,770 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:12:12" (1/1) ... [2021-10-20 06:12:12,770 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:12:12" (1/1) ... [2021-10-20 06:12:12,803 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:12:12" (1/1) ... [2021-10-20 06:12:12,814 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:12:12" (1/1) ... [2021-10-20 06:12:12,825 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:12:12" (1/1) ... [2021-10-20 06:12:12,837 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-20 06:12:12,839 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-20 06:12:12,839 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-20 06:12:12,839 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-20 06:12:12,840 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:12:12" (1/1) ... [2021-10-20 06:12:12,853 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-20 06:12:12,883 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7919837-826b-4bbc-948a-df6ae852a3b9/bin/utaipan-tZwUujhuQw/z3 [2021-10-20 06:12:12,922 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7919837-826b-4bbc-948a-df6ae852a3b9/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-20 06:12:12,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7919837-826b-4bbc-948a-df6ae852a3b9/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-20 06:12:12,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-20 06:12:12,966 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-20 06:12:12,967 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-20 06:12:12,967 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-20 06:12:14,955 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-20 06:12:14,956 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-20 06:12:14,959 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:12:14 BoogieIcfgContainer [2021-10-20 06:12:14,963 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-20 06:12:14,965 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-20 06:12:14,965 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-20 06:12:14,969 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-20 06:12:14,969 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 06:12:11" (1/3) ... [2021-10-20 06:12:14,970 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cd2ca8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:12:14, skipping insertion in model container [2021-10-20 06:12:14,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:12:12" (2/3) ... [2021-10-20 06:12:14,971 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cd2ca8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:12:14, skipping insertion in model container [2021-10-20 06:12:14,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:12:14" (3/3) ... [2021-10-20 06:12:14,973 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label45.c [2021-10-20 06:12:14,980 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-20 06:12:14,981 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-20 06:12:15,063 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-20 06:12:15,069 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 06:12:15,069 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-20 06:12:15,087 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 06:12:15,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-10-20 06:12:15,096 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 06:12:15,097 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 06:12:15,097 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 06:12:15,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 06:12:15,103 INFO L82 PathProgramCache]: Analyzing trace with hash 379026311, now seen corresponding path program 1 times [2021-10-20 06:12:15,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 06:12:15,112 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17496437] [2021-10-20 06:12:15,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:12:15,113 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 06:12:15,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 06:12:15,576 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 06:12:15,576 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 06:12:15,577 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17496437] [2021-10-20 06:12:15,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17496437] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-20 06:12:15,578 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-20 06:12:15,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-20 06:12:15,588 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553236413] [2021-10-20 06:12:15,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-20 06:12:15,598 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 06:12:15,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-20 06:12:15,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-20 06:12:15,622 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 06:12:16,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 06:12:16,151 INFO L93 Difference]: Finished difference Result 224 states and 428 transitions. [2021-10-20 06:12:16,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-20 06:12:16,153 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 06:12:16,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 06:12:16,176 INFO L225 Difference]: With dead ends: 224 [2021-10-20 06:12:16,176 INFO L226 Difference]: Without dead ends: 145 [2021-10-20 06:12:16,181 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-20 06:12:16,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-10-20 06:12:16,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2021-10-20 06:12:16,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 1.7986111111111112) internal successors, (259), 144 states have internal predecessors, (259), 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 06:12:16,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 259 transitions. [2021-10-20 06:12:16,238 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 259 transitions. Word has length 71 [2021-10-20 06:12:16,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 06:12:16,239 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 259 transitions. [2021-10-20 06:12:16,239 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 06:12:16,240 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 259 transitions. [2021-10-20 06:12:16,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-10-20 06:12:16,244 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 06:12:16,244 INFO L512 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1] [2021-10-20 06:12:16,245 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-20 06:12:16,245 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 06:12:16,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 06:12:16,246 INFO L82 PathProgramCache]: Analyzing trace with hash -615335398, now seen corresponding path program 1 times [2021-10-20 06:12:16,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 06:12:16,247 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902762862] [2021-10-20 06:12:16,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:12:16,247 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 06:12:16,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 06:12:16,319 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 06:12:16,319 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 06:12:16,319 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902762862] [2021-10-20 06:12:16,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902762862] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-20 06:12:16,320 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-20 06:12:16,320 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-20 06:12:16,320 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637380645] [2021-10-20 06:12:16,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-20 06:12:16,322 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 06:12:16,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-20 06:12:16,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-20 06:12:16,323 INFO L87 Difference]: Start difference. First operand 145 states and 259 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 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 06:12:16,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 06:12:16,759 INFO L93 Difference]: Finished difference Result 431 states and 774 transitions. [2021-10-20 06:12:16,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-20 06:12:16,760 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 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 77 [2021-10-20 06:12:16,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 06:12:16,764 INFO L225 Difference]: With dead ends: 431 [2021-10-20 06:12:16,764 INFO L226 Difference]: Without dead ends: 287 [2021-10-20 06:12:16,766 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-20 06:12:16,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2021-10-20 06:12:16,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2021-10-20 06:12:16,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 286 states have (on average 1.632867132867133) internal successors, (467), 286 states have internal predecessors, (467), 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 06:12:16,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 467 transitions. [2021-10-20 06:12:16,826 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 467 transitions. Word has length 77 [2021-10-20 06:12:16,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 06:12:16,826 INFO L470 AbstractCegarLoop]: Abstraction has 287 states and 467 transitions. [2021-10-20 06:12:16,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 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 06:12:16,827 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 467 transitions. [2021-10-20 06:12:16,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-10-20 06:12:16,838 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 06:12:16,839 INFO L512 BasicCegarLoop]: trace histogram [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, 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] [2021-10-20 06:12:16,840 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-20 06:12:16,840 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 06:12:16,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 06:12:16,853 INFO L82 PathProgramCache]: Analyzing trace with hash -1933824779, now seen corresponding path program 1 times [2021-10-20 06:12:16,854 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 06:12:16,854 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383473993] [2021-10-20 06:12:16,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:12:16,855 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 06:12:16,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 06:12:16,989 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-20 06:12:16,990 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 06:12:16,990 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383473993] [2021-10-20 06:12:16,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383473993] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-20 06:12:16,990 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-20 06:12:16,991 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-20 06:12:16,991 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659160099] [2021-10-20 06:12:16,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-20 06:12:16,992 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 06:12:16,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-20 06:12:16,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-20 06:12:16,993 INFO L87 Difference]: Start difference. First operand 287 states and 467 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:12:17,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 06:12:17,393 INFO L93 Difference]: Finished difference Result 715 states and 1184 transitions. [2021-10-20 06:12:17,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-20 06:12:17,394 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-10-20 06:12:17,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 06:12:17,398 INFO L225 Difference]: With dead ends: 715 [2021-10-20 06:12:17,398 INFO L226 Difference]: Without dead ends: 429 [2021-10-20 06:12:17,401 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-20 06:12:17,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2021-10-20 06:12:17,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 358. [2021-10-20 06:12:17,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 357 states have (on average 1.6442577030812324) internal successors, (587), 357 states have internal predecessors, (587), 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 06:12:17,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 587 transitions. [2021-10-20 06:12:17,447 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 587 transitions. Word has length 105 [2021-10-20 06:12:17,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 06:12:17,448 INFO L470 AbstractCegarLoop]: Abstraction has 358 states and 587 transitions. [2021-10-20 06:12:17,448 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:12:17,448 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 587 transitions. [2021-10-20 06:12:17,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-10-20 06:12:17,452 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 06:12:17,452 INFO L512 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:12:17,452 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-20 06:12:17,453 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 06:12:17,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 06:12:17,453 INFO L82 PathProgramCache]: Analyzing trace with hash 218746815, now seen corresponding path program 1 times [2021-10-20 06:12:17,454 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 06:12:17,454 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873746462] [2021-10-20 06:12:17,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:12:17,454 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 06:12:17,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 06:12:17,554 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-10-20 06:12:17,555 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 06:12:17,555 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873746462] [2021-10-20 06:12:17,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873746462] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-20 06:12:17,556 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-20 06:12:17,556 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-20 06:12:17,556 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350436152] [2021-10-20 06:12:17,557 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-20 06:12:17,557 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 06:12:17,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-20 06:12:17,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-20 06:12:17,559 INFO L87 Difference]: Start difference. First operand 358 states and 587 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 06:12:17,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 06:12:17,894 INFO L93 Difference]: Finished difference Result 715 states and 1173 transitions. [2021-10-20 06:12:17,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-20 06:12:17,895 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 109 [2021-10-20 06:12:17,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 06:12:17,898 INFO L225 Difference]: With dead ends: 715 [2021-10-20 06:12:17,898 INFO L226 Difference]: Without dead ends: 358 [2021-10-20 06:12:17,900 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-20 06:12:17,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2021-10-20 06:12:17,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 358. [2021-10-20 06:12:17,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 357 states have (on average 1.6274509803921569) internal successors, (581), 357 states have internal predecessors, (581), 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 06:12:17,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 581 transitions. [2021-10-20 06:12:17,919 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 581 transitions. Word has length 109 [2021-10-20 06:12:17,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 06:12:17,919 INFO L470 AbstractCegarLoop]: Abstraction has 358 states and 581 transitions. [2021-10-20 06:12:17,919 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 06:12:17,920 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 581 transitions. [2021-10-20 06:12:17,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-10-20 06:12:17,922 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 06:12:17,922 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 06:12:17,922 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-20 06:12:17,923 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 06:12:17,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 06:12:17,924 INFO L82 PathProgramCache]: Analyzing trace with hash 674880503, now seen corresponding path program 1 times [2021-10-20 06:12:17,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 06:12:17,924 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919421861] [2021-10-20 06:12:17,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:12:17,925 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 06:12:17,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 06:12:18,028 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-20 06:12:18,029 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 06:12:18,029 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919421861] [2021-10-20 06:12:18,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919421861] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-20 06:12:18,030 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-20 06:12:18,030 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-20 06:12:18,030 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425980804] [2021-10-20 06:12:18,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-20 06:12:18,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 06:12:18,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-20 06:12:18,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-20 06:12:18,032 INFO L87 Difference]: Start difference. First operand 358 states and 581 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 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 06:12:18,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 06:12:18,407 INFO L93 Difference]: Finished difference Result 857 states and 1369 transitions. [2021-10-20 06:12:18,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-20 06:12:18,408 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 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 113 [2021-10-20 06:12:18,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 06:12:18,412 INFO L225 Difference]: With dead ends: 857 [2021-10-20 06:12:18,413 INFO L226 Difference]: Without dead ends: 500 [2021-10-20 06:12:18,414 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-20 06:12:18,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2021-10-20 06:12:18,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 500. [2021-10-20 06:12:18,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 499 states have (on average 1.5210420841683367) internal successors, (759), 499 states have internal predecessors, (759), 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 06:12:18,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 759 transitions. [2021-10-20 06:12:18,435 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 759 transitions. Word has length 113 [2021-10-20 06:12:18,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 06:12:18,436 INFO L470 AbstractCegarLoop]: Abstraction has 500 states and 759 transitions. [2021-10-20 06:12:18,436 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 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 06:12:18,437 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 759 transitions. [2021-10-20 06:12:18,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-10-20 06:12:18,439 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 06:12:18,440 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 06:12:18,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-20 06:12:18,440 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 06:12:18,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 06:12:18,441 INFO L82 PathProgramCache]: Analyzing trace with hash -692380747, now seen corresponding path program 1 times [2021-10-20 06:12:18,442 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 06:12:18,442 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106949849] [2021-10-20 06:12:18,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:12:18,442 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 06:12:18,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 06:12:18,507 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-10-20 06:12:18,507 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 06:12:18,507 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106949849] [2021-10-20 06:12:18,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106949849] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-20 06:12:18,508 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-20 06:12:18,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-20 06:12:18,509 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303981152] [2021-10-20 06:12:18,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-20 06:12:18,510 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 06:12:18,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-20 06:12:18,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-20 06:12:18,511 INFO L87 Difference]: Start difference. First operand 500 states and 759 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 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 06:12:18,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 06:12:18,886 INFO L93 Difference]: Finished difference Result 1354 states and 2016 transitions. [2021-10-20 06:12:18,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-20 06:12:18,887 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 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 122 [2021-10-20 06:12:18,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 06:12:18,893 INFO L225 Difference]: With dead ends: 1354 [2021-10-20 06:12:18,893 INFO L226 Difference]: Without dead ends: 855 [2021-10-20 06:12:18,894 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-20 06:12:18,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2021-10-20 06:12:18,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 642. [2021-10-20 06:12:18,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 641 states have (on average 1.4804992199687987) internal successors, (949), 641 states have internal predecessors, (949), 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 06:12:18,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 949 transitions. [2021-10-20 06:12:18,920 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 949 transitions. Word has length 122 [2021-10-20 06:12:18,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 06:12:18,920 INFO L470 AbstractCegarLoop]: Abstraction has 642 states and 949 transitions. [2021-10-20 06:12:18,921 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 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 06:12:18,921 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 949 transitions. [2021-10-20 06:12:18,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-10-20 06:12:18,923 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 06:12:18,924 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, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:12:18,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-20 06:12:18,924 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 06:12:18,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 06:12:18,925 INFO L82 PathProgramCache]: Analyzing trace with hash 240375739, now seen corresponding path program 1 times [2021-10-20 06:12:18,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 06:12:18,925 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491300126] [2021-10-20 06:12:18,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:12:18,926 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 06:12:18,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 06:12:18,987 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-10-20 06:12:18,988 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 06:12:18,988 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491300126] [2021-10-20 06:12:18,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491300126] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-20 06:12:18,989 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-20 06:12:18,989 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-20 06:12:18,989 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767272683] [2021-10-20 06:12:18,990 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-20 06:12:18,990 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 06:12:18,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-20 06:12:18,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-20 06:12:18,991 INFO L87 Difference]: Start difference. First operand 642 states and 949 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 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 06:12:19,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 06:12:19,389 INFO L93 Difference]: Finished difference Result 1354 states and 2010 transitions. [2021-10-20 06:12:19,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-20 06:12:19,390 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 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 138 [2021-10-20 06:12:19,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 06:12:19,395 INFO L225 Difference]: With dead ends: 1354 [2021-10-20 06:12:19,396 INFO L226 Difference]: Without dead ends: 713 [2021-10-20 06:12:19,397 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-20 06:12:19,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2021-10-20 06:12:19,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 713. [2021-10-20 06:12:19,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 713 states, 712 states have (on average 1.4578651685393258) internal successors, (1038), 712 states have internal predecessors, (1038), 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 06:12:19,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 1038 transitions. [2021-10-20 06:12:19,428 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 1038 transitions. Word has length 138 [2021-10-20 06:12:19,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 06:12:19,429 INFO L470 AbstractCegarLoop]: Abstraction has 713 states and 1038 transitions. [2021-10-20 06:12:19,429 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 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 06:12:19,429 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 1038 transitions. [2021-10-20 06:12:19,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-10-20 06:12:19,433 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 06:12:19,434 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, 3, 3, 3, 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 06:12:19,434 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-20 06:12:19,434 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 06:12:19,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 06:12:19,435 INFO L82 PathProgramCache]: Analyzing trace with hash 1229086821, now seen corresponding path program 1 times [2021-10-20 06:12:19,435 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 06:12:19,436 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105596783] [2021-10-20 06:12:19,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:12:19,436 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 06:12:19,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 06:12:19,535 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-10-20 06:12:19,536 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 06:12:19,536 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105596783] [2021-10-20 06:12:19,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105596783] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-20 06:12:19,536 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-20 06:12:19,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-20 06:12:19,537 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064248030] [2021-10-20 06:12:19,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-20 06:12:19,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 06:12:19,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-20 06:12:19,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-20 06:12:19,539 INFO L87 Difference]: Start difference. First operand 713 states and 1038 transitions. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 3 states have internal predecessors, (114), 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 06:12:20,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 06:12:20,098 INFO L93 Difference]: Finished difference Result 1780 states and 2557 transitions. [2021-10-20 06:12:20,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-20 06:12:20,098 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 3 states have internal predecessors, (114), 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 154 [2021-10-20 06:12:20,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 06:12:20,105 INFO L225 Difference]: With dead ends: 1780 [2021-10-20 06:12:20,105 INFO L226 Difference]: Without dead ends: 997 [2021-10-20 06:12:20,107 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.4ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-20 06:12:20,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2021-10-20 06:12:20,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 926. [2021-10-20 06:12:20,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 926 states, 925 states have (on average 1.2432432432432432) internal successors, (1150), 925 states have internal predecessors, (1150), 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 06:12:20,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1150 transitions. [2021-10-20 06:12:20,139 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1150 transitions. Word has length 154 [2021-10-20 06:12:20,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 06:12:20,139 INFO L470 AbstractCegarLoop]: Abstraction has 926 states and 1150 transitions. [2021-10-20 06:12:20,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 3 states have internal predecessors, (114), 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 06:12:20,140 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1150 transitions. [2021-10-20 06:12:20,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-10-20 06:12:20,143 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 06:12:20,144 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, 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 06:12:20,144 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-20 06:12:20,144 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 06:12:20,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 06:12:20,145 INFO L82 PathProgramCache]: Analyzing trace with hash -937095559, now seen corresponding path program 1 times [2021-10-20 06:12:20,145 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 06:12:20,145 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983820890] [2021-10-20 06:12:20,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:12:20,146 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 06:12:20,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 06:12:20,243 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-10-20 06:12:20,243 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 06:12:20,244 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983820890] [2021-10-20 06:12:20,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983820890] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-20 06:12:20,244 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-20 06:12:20,244 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-20 06:12:20,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418836571] [2021-10-20 06:12:20,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-20 06:12:20,245 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 06:12:20,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-20 06:12:20,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-20 06:12:20,246 INFO L87 Difference]: Start difference. First operand 926 states and 1150 transitions. Second operand has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 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 06:12:20,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 06:12:20,770 INFO L93 Difference]: Finished difference Result 2064 states and 2553 transitions. [2021-10-20 06:12:20,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-20 06:12:20,771 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 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 177 [2021-10-20 06:12:20,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 06:12:20,779 INFO L225 Difference]: With dead ends: 2064 [2021-10-20 06:12:20,779 INFO L226 Difference]: Without dead ends: 1139 [2021-10-20 06:12:20,781 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.2ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-20 06:12:20,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1139 states. [2021-10-20 06:12:20,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1139 to 926. [2021-10-20 06:12:20,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 926 states, 925 states have (on average 1.1978378378378378) internal successors, (1108), 925 states have internal predecessors, (1108), 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 06:12:20,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1108 transitions. [2021-10-20 06:12:20,815 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1108 transitions. Word has length 177 [2021-10-20 06:12:20,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 06:12:20,816 INFO L470 AbstractCegarLoop]: Abstraction has 926 states and 1108 transitions. [2021-10-20 06:12:20,816 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 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 06:12:20,816 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1108 transitions. [2021-10-20 06:12:20,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2021-10-20 06:12:20,821 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 06:12:20,821 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 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, 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] [2021-10-20 06:12:20,821 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-20 06:12:20,821 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 06:12:20,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 06:12:20,822 INFO L82 PathProgramCache]: Analyzing trace with hash 1287882296, now seen corresponding path program 1 times [2021-10-20 06:12:20,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 06:12:20,823 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476403626] [2021-10-20 06:12:20,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:12:20,823 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 06:12:20,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 06:12:20,907 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2021-10-20 06:12:20,907 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 06:12:20,908 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476403626] [2021-10-20 06:12:20,908 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476403626] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-20 06:12:20,908 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-20 06:12:20,908 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-20 06:12:20,909 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870776298] [2021-10-20 06:12:20,909 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-20 06:12:20,909 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 06:12:20,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-20 06:12:20,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-20 06:12:20,910 INFO L87 Difference]: Start difference. First operand 926 states and 1108 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 3 states have internal predecessors, (94), 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 06:12:21,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 06:12:21,395 INFO L93 Difference]: Finished difference Result 1922 states and 2305 transitions. [2021-10-20 06:12:21,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-20 06:12:21,395 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 3 states have internal predecessors, (94), 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 202 [2021-10-20 06:12:21,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 06:12:21,402 INFO L225 Difference]: With dead ends: 1922 [2021-10-20 06:12:21,403 INFO L226 Difference]: Without dead ends: 997 [2021-10-20 06:12:21,404 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.5ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-20 06:12:21,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2021-10-20 06:12:21,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 997. [2021-10-20 06:12:21,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 997 states, 996 states have (on average 1.179718875502008) internal successors, (1175), 996 states have internal predecessors, (1175), 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 06:12:21,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1175 transitions. [2021-10-20 06:12:21,439 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1175 transitions. Word has length 202 [2021-10-20 06:12:21,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 06:12:21,439 INFO L470 AbstractCegarLoop]: Abstraction has 997 states and 1175 transitions. [2021-10-20 06:12:21,439 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 3 states have internal predecessors, (94), 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 06:12:21,440 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1175 transitions. [2021-10-20 06:12:21,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2021-10-20 06:12:21,445 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 06:12:21,445 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 06:12:21,445 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-20 06:12:21,446 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 06:12:21,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 06:12:21,446 INFO L82 PathProgramCache]: Analyzing trace with hash 1529633176, now seen corresponding path program 1 times [2021-10-20 06:12:21,447 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 06:12:21,447 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599948386] [2021-10-20 06:12:21,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:12:21,447 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 06:12:21,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 06:12:21,575 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 219 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2021-10-20 06:12:21,576 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 06:12:21,576 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599948386] [2021-10-20 06:12:21,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599948386] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-20 06:12:21,576 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-20 06:12:21,576 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-20 06:12:21,577 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616515069] [2021-10-20 06:12:21,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-20 06:12:21,577 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 06:12:21,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-20 06:12:21,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-20 06:12:21,578 INFO L87 Difference]: Start difference. First operand 997 states and 1175 transitions. Second operand has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 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 06:12:21,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 06:12:21,902 INFO L93 Difference]: Finished difference Result 2206 states and 2603 transitions. [2021-10-20 06:12:21,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-20 06:12:21,903 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 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 233 [2021-10-20 06:12:21,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 06:12:21,911 INFO L225 Difference]: With dead ends: 2206 [2021-10-20 06:12:21,911 INFO L226 Difference]: Without dead ends: 1210 [2021-10-20 06:12:21,913 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-20 06:12:21,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2021-10-20 06:12:21,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 1139. [2021-10-20 06:12:21,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1139 states, 1138 states have (on average 1.1678383128295255) internal successors, (1329), 1138 states have internal predecessors, (1329), 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 06:12:21,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 1329 transitions. [2021-10-20 06:12:21,949 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 1329 transitions. Word has length 233 [2021-10-20 06:12:21,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 06:12:21,949 INFO L470 AbstractCegarLoop]: Abstraction has 1139 states and 1329 transitions. [2021-10-20 06:12:21,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 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 06:12:21,950 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 1329 transitions. [2021-10-20 06:12:21,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2021-10-20 06:12:21,955 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 06:12:21,955 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 06:12:21,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-20 06:12:21,956 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 06:12:21,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 06:12:21,956 INFO L82 PathProgramCache]: Analyzing trace with hash 1886816559, now seen corresponding path program 1 times [2021-10-20 06:12:21,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 06:12:21,956 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872645641] [2021-10-20 06:12:21,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:12:21,957 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 06:12:22,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 06:12:22,240 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 182 proven. 103 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2021-10-20 06:12:22,240 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 06:12:22,240 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872645641] [2021-10-20 06:12:22,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872645641] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-20 06:12:22,245 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1504962518] [2021-10-20 06:12:22,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:12:22,246 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-20 06:12:22,246 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7919837-826b-4bbc-948a-df6ae852a3b9/bin/utaipan-tZwUujhuQw/z3 [2021-10-20 06:12:22,251 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7919837-826b-4bbc-948a-df6ae852a3b9/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-20 06:12:22,288 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7919837-826b-4bbc-948a-df6ae852a3b9/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-20 06:12:22,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 06:12:22,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-20 06:12:22,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 06:12:23,354 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 183 proven. 0 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2021-10-20 06:12:23,355 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 06:12:23,878 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 183 proven. 0 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2021-10-20 06:12:23,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1504962518] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-20 06:12:23,879 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-20 06:12:23,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2021-10-20 06:12:23,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417295014] [2021-10-20 06:12:23,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-20 06:12:23,882 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 06:12:23,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-20 06:12:23,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-20 06:12:23,885 INFO L87 Difference]: Start difference. First operand 1139 states and 1329 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 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 06:12:24,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 06:12:24,179 INFO L93 Difference]: Finished difference Result 1352 states and 1558 transitions. [2021-10-20 06:12:24,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-20 06:12:24,180 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 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) Word has length 255 [2021-10-20 06:12:24,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 06:12:24,181 INFO L225 Difference]: With dead ends: 1352 [2021-10-20 06:12:24,181 INFO L226 Difference]: Without dead ends: 0 [2021-10-20 06:12:24,182 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 513 GetRequests, 508 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 29.5ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-20 06:12:24,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-20 06:12:24,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-20 06:12:24,183 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 06:12:24,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-20 06:12:24,183 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 255 [2021-10-20 06:12:24,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 06:12:24,184 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-20 06:12:24,184 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 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 06:12:24,184 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-20 06:12:24,184 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-20 06:12:24,187 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-20 06:12:24,230 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7919837-826b-4bbc-948a-df6ae852a3b9/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-20 06:12:24,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7919837-826b-4bbc-948a-df6ae852a3b9/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-20 06:12:24,401 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-20 06:12:24,405 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:12:24,451 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:12:24,456 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:12:24,608 INFO L857 garLoopResultBuilder]: For program point L102(lines 102 400) no Hoare annotation was computed. [2021-10-20 06:12:24,609 INFO L857 garLoopResultBuilder]: For program point L598(line 598) no Hoare annotation was computed. [2021-10-20 06:12:24,609 INFO L857 garLoopResultBuilder]: For program point L334(lines 334 400) no Hoare annotation was computed. [2021-10-20 06:12:24,609 INFO L857 garLoopResultBuilder]: For program point L533-1(lines 40 585) no Hoare annotation was computed. [2021-10-20 06:12:24,609 INFO L857 garLoopResultBuilder]: For program point L302(lines 302 400) no Hoare annotation was computed. [2021-10-20 06:12:24,609 INFO L857 garLoopResultBuilder]: For program point L170(lines 170 400) no Hoare annotation was computed. [2021-10-20 06:12:24,609 INFO L857 garLoopResultBuilder]: For program point L204(lines 204 400) no Hoare annotation was computed. [2021-10-20 06:12:24,609 INFO L857 garLoopResultBuilder]: For program point L72(lines 72 400) no Hoare annotation was computed. [2021-10-20 06:12:24,610 INFO L857 garLoopResultBuilder]: For program point L271(lines 271 400) no Hoare annotation was computed. [2021-10-20 06:12:24,610 INFO L857 garLoopResultBuilder]: For program point L139(lines 139 400) no Hoare annotation was computed. [2021-10-20 06:12:24,610 INFO L857 garLoopResultBuilder]: For program point L536-1(lines 40 585) no Hoare annotation was computed. [2021-10-20 06:12:24,610 INFO L857 garLoopResultBuilder]: For program point L371(lines 371 400) no Hoare annotation was computed. [2021-10-20 06:12:24,610 INFO L857 garLoopResultBuilder]: For program point L107(lines 107 400) no Hoare annotation was computed. [2021-10-20 06:12:24,610 INFO L857 garLoopResultBuilder]: For program point L41(lines 41 400) no Hoare annotation was computed. [2021-10-20 06:12:24,610 INFO L857 garLoopResultBuilder]: For program point L537(line 537) no Hoare annotation was computed. [2021-10-20 06:12:24,611 INFO L857 garLoopResultBuilder]: For program point L339(lines 339 400) no Hoare annotation was computed. [2021-10-20 06:12:24,611 INFO L857 garLoopResultBuilder]: For program point L207(lines 207 400) no Hoare annotation was computed. [2021-10-20 06:12:24,611 INFO L857 garLoopResultBuilder]: For program point L75(lines 75 400) no Hoare annotation was computed. [2021-10-20 06:12:24,611 INFO L857 garLoopResultBuilder]: For program point L373(lines 373 400) no Hoare annotation was computed. [2021-10-20 06:12:24,611 INFO L857 garLoopResultBuilder]: For program point L241(lines 241 400) no Hoare annotation was computed. [2021-10-20 06:12:24,611 INFO L857 garLoopResultBuilder]: For program point L175(lines 175 400) no Hoare annotation was computed. [2021-10-20 06:12:24,612 INFO L857 garLoopResultBuilder]: For program point L275(lines 275 400) no Hoare annotation was computed. [2021-10-20 06:12:24,612 INFO L857 garLoopResultBuilder]: For program point L375(lines 375 400) no Hoare annotation was computed. [2021-10-20 06:12:24,612 INFO L857 garLoopResultBuilder]: For program point L309(lines 309 400) no Hoare annotation was computed. [2021-10-20 06:12:24,612 INFO L857 garLoopResultBuilder]: For program point L45(lines 45 400) no Hoare annotation was computed. [2021-10-20 06:12:24,612 INFO L857 garLoopResultBuilder]: For program point L343(lines 343 400) no Hoare annotation was computed. [2021-10-20 06:12:24,612 INFO L857 garLoopResultBuilder]: For program point L112(lines 112 400) no Hoare annotation was computed. [2021-10-20 06:12:24,613 INFO L857 garLoopResultBuilder]: For program point L278(lines 278 400) no Hoare annotation was computed. [2021-10-20 06:12:24,613 INFO L857 garLoopResultBuilder]: For program point L146(lines 146 400) no Hoare annotation was computed. [2021-10-20 06:12:24,613 INFO L857 garLoopResultBuilder]: For program point L213(lines 213 400) no Hoare annotation was computed. [2021-10-20 06:12:24,613 INFO L857 garLoopResultBuilder]: For program point L82(lines 82 400) no Hoare annotation was computed. [2021-10-20 06:12:24,613 INFO L857 garLoopResultBuilder]: For program point L347(lines 347 400) no Hoare annotation was computed. [2021-10-20 06:12:24,613 INFO L857 garLoopResultBuilder]: For program point L248(lines 248 400) no Hoare annotation was computed. [2021-10-20 06:12:24,614 INFO L857 garLoopResultBuilder]: For program point L183(lines 183 400) no Hoare annotation was computed. [2021-10-20 06:12:24,614 INFO L857 garLoopResultBuilder]: For program point L150(lines 150 400) no Hoare annotation was computed. [2021-10-20 06:12:24,614 INFO L857 garLoopResultBuilder]: For program point L382(lines 382 400) no Hoare annotation was computed. [2021-10-20 06:12:24,614 INFO L857 garLoopResultBuilder]: For program point L316(lines 316 400) no Hoare annotation was computed. [2021-10-20 06:12:24,614 INFO L857 garLoopResultBuilder]: For program point L283(lines 283 400) no Hoare annotation was computed. [2021-10-20 06:12:24,614 INFO L857 garLoopResultBuilder]: For program point L118(lines 118 400) no Hoare annotation was computed. [2021-10-20 06:12:24,615 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-20 06:12:24,615 INFO L857 garLoopResultBuilder]: For program point L218(lines 218 400) no Hoare annotation was computed. [2021-10-20 06:12:24,615 INFO L857 garLoopResultBuilder]: For program point L53(lines 53 400) no Hoare annotation was computed. [2021-10-20 06:12:24,615 INFO L857 garLoopResultBuilder]: For program point L154(lines 154 400) no Hoare annotation was computed. [2021-10-20 06:12:24,616 INFO L853 garLoopResultBuilder]: At program point L584(lines 40 585) the Hoare annotation is: (let ((.cse0 (= ~a21~0 1)) (.cse1 (<= ~a16~0 5))) (or (and (<= 14 ~a8~0) .cse0 .cse1) (and .cse0 (<= 15 ~a8~0)) (and .cse0 (<= ~a16~0 4)) (= ~a20~0 1) (and (= ~a17~0 1) .cse1))) [2021-10-20 06:12:24,616 INFO L857 garLoopResultBuilder]: For program point L188(lines 188 400) no Hoare annotation was computed. [2021-10-20 06:12:24,616 INFO L857 garLoopResultBuilder]: For program point L387(lines 387 400) no Hoare annotation was computed. [2021-10-20 06:12:24,616 INFO L857 garLoopResultBuilder]: For program point L288(lines 288 400) no Hoare annotation was computed. [2021-10-20 06:12:24,616 INFO L857 garLoopResultBuilder]: For program point L255(lines 255 400) no Hoare annotation was computed. [2021-10-20 06:12:24,617 INFO L857 garLoopResultBuilder]: For program point L90(lines 90 400) no Hoare annotation was computed. [2021-10-20 06:12:24,617 INFO L857 garLoopResultBuilder]: For program point L355(lines 355 400) no Hoare annotation was computed. [2021-10-20 06:12:24,617 INFO L857 garLoopResultBuilder]: For program point L322(lines 322 400) no Hoare annotation was computed. [2021-10-20 06:12:24,617 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-20 06:12:24,617 INFO L857 garLoopResultBuilder]: For program point L124(lines 124 400) no Hoare annotation was computed. [2021-10-20 06:12:24,617 INFO L860 garLoopResultBuilder]: At program point L587(lines 587 604) the Hoare annotation is: true [2021-10-20 06:12:24,618 INFO L857 garLoopResultBuilder]: For program point L224(lines 224 400) no Hoare annotation was computed. [2021-10-20 06:12:24,618 INFO L857 garLoopResultBuilder]: For program point L158(lines 158 400) no Hoare annotation was computed. [2021-10-20 06:12:24,618 INFO L857 garLoopResultBuilder]: For program point L59(lines 59 400) no Hoare annotation was computed. [2021-10-20 06:12:24,618 INFO L857 garLoopResultBuilder]: For program point L94(lines 94 400) no Hoare annotation was computed. [2021-10-20 06:12:24,618 INFO L857 garLoopResultBuilder]: For program point L392(lines 392 400) no Hoare annotation was computed. [2021-10-20 06:12:24,618 INFO L857 garLoopResultBuilder]: For program point L326(lines 326 400) no Hoare annotation was computed. [2021-10-20 06:12:24,619 INFO L857 garLoopResultBuilder]: For program point L260(lines 260 400) no Hoare annotation was computed. [2021-10-20 06:12:24,619 INFO L857 garLoopResultBuilder]: For program point L228(lines 228 400) no Hoare annotation was computed. [2021-10-20 06:12:24,619 INFO L857 garLoopResultBuilder]: For program point L162(lines 162 400) no Hoare annotation was computed. [2021-10-20 06:12:24,619 INFO L857 garLoopResultBuilder]: For program point L129(lines 129 400) no Hoare annotation was computed. [2021-10-20 06:12:24,619 INFO L857 garLoopResultBuilder]: For program point L328(lines 328 400) no Hoare annotation was computed. [2021-10-20 06:12:24,620 INFO L857 garLoopResultBuilder]: For program point L196(lines 196 400) no Hoare annotation was computed. [2021-10-20 06:12:24,620 INFO L857 garLoopResultBuilder]: For program point L64(lines 64 400) no Hoare annotation was computed. [2021-10-20 06:12:24,620 INFO L853 garLoopResultBuilder]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse0 (= ~a21~0 1)) (.cse1 (<= ~a16~0 5))) (or (and (<= 14 ~a8~0) .cse0 .cse1) (and .cse0 (<= 15 ~a8~0)) (and .cse0 (<= ~a16~0 4)) (= ~a20~0 1) (and (= ~a17~0 1) .cse1))) [2021-10-20 06:12:24,620 INFO L857 garLoopResultBuilder]: For program point L296(lines 296 400) no Hoare annotation was computed. [2021-10-20 06:12:24,620 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 537) no Hoare annotation was computed. [2021-10-20 06:12:24,621 INFO L857 garLoopResultBuilder]: For program point L363(lines 363 400) no Hoare annotation was computed. [2021-10-20 06:12:24,621 INFO L857 garLoopResultBuilder]: For program point L199(lines 199 400) no Hoare annotation was computed. [2021-10-20 06:12:24,621 INFO L857 garLoopResultBuilder]: For program point L365(lines 365 400) no Hoare annotation was computed. [2021-10-20 06:12:24,621 INFO L857 garLoopResultBuilder]: For program point L266(lines 266 400) no Hoare annotation was computed. [2021-10-20 06:12:24,621 INFO L857 garLoopResultBuilder]: For program point L233(lines 233 400) no Hoare annotation was computed. [2021-10-20 06:12:24,621 INFO L857 garLoopResultBuilder]: For program point L134(lines 134 400) no Hoare annotation was computed. [2021-10-20 06:12:24,626 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-20 06:12:24,657 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 06:12:24 BoogieIcfgContainer [2021-10-20 06:12:24,657 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-20 06:12:24,658 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-20 06:12:24,658 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-20 06:12:24,658 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-20 06:12:24,659 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:12:14" (3/4) ... [2021-10-20 06:12:24,662 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-20 06:12:24,700 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 108 nodes and edges [2021-10-20 06:12:24,703 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2021-10-20 06:12:24,705 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-10-20 06:12:24,707 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-20 06:12:24,865 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7919837-826b-4bbc-948a-df6ae852a3b9/bin/utaipan-tZwUujhuQw/witness.graphml [2021-10-20 06:12:24,866 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-20 06:12:24,867 INFO L168 Benchmark]: Toolchain (without parser) took 12954.34 ms. Allocated memory was 125.8 MB in the beginning and 220.2 MB in the end (delta: 94.4 MB). Free memory was 92.6 MB in the beginning and 155.0 MB in the end (delta: -62.4 MB). Peak memory consumption was 32.6 MB. Max. memory is 16.1 GB. [2021-10-20 06:12:24,868 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 86.0 MB. Free memory is still 41.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-20 06:12:24,868 INFO L168 Benchmark]: CACSL2BoogieTranslator took 725.78 ms. Allocated memory is still 125.8 MB. Free memory was 92.3 MB in the beginning and 84.9 MB in the end (delta: 7.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-20 06:12:24,868 INFO L168 Benchmark]: Boogie Procedure Inliner took 109.12 ms. Allocated memory is still 125.8 MB. Free memory was 84.4 MB in the beginning and 79.1 MB in the end (delta: 5.4 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-20 06:12:24,869 INFO L168 Benchmark]: Boogie Preprocessor took 83.80 ms. Allocated memory is still 125.8 MB. Free memory was 79.1 MB in the beginning and 74.9 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-20 06:12:24,869 INFO L168 Benchmark]: RCFGBuilder took 2124.52 ms. Allocated memory was 125.8 MB in the beginning and 151.0 MB in the end (delta: 25.2 MB). Free memory was 74.4 MB in the beginning and 90.3 MB in the end (delta: -15.9 MB). Peak memory consumption was 41.1 MB. Max. memory is 16.1 GB. [2021-10-20 06:12:24,870 INFO L168 Benchmark]: TraceAbstraction took 9691.94 ms. Allocated memory was 151.0 MB in the beginning and 220.2 MB in the end (delta: 69.2 MB). Free memory was 90.3 MB in the beginning and 169.7 MB in the end (delta: -79.3 MB). Peak memory consumption was 77.9 MB. Max. memory is 16.1 GB. [2021-10-20 06:12:24,870 INFO L168 Benchmark]: Witness Printer took 208.13 ms. Allocated memory is still 220.2 MB. Free memory was 169.7 MB in the beginning and 155.0 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-20 06:12:24,873 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 86.0 MB. Free memory is still 41.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 725.78 ms. Allocated memory is still 125.8 MB. Free memory was 92.3 MB in the beginning and 84.9 MB in the end (delta: 7.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 109.12 ms. Allocated memory is still 125.8 MB. Free memory was 84.4 MB in the beginning and 79.1 MB in the end (delta: 5.4 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 83.80 ms. Allocated memory is still 125.8 MB. Free memory was 79.1 MB in the beginning and 74.9 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2124.52 ms. Allocated memory was 125.8 MB in the beginning and 151.0 MB in the end (delta: 25.2 MB). Free memory was 74.4 MB in the beginning and 90.3 MB in the end (delta: -15.9 MB). Peak memory consumption was 41.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 9691.94 ms. Allocated memory was 151.0 MB in the beginning and 220.2 MB in the end (delta: 69.2 MB). Free memory was 90.3 MB in the beginning and 169.7 MB in the end (delta: -79.3 MB). Peak memory consumption was 77.9 MB. Max. memory is 16.1 GB. * Witness Printer took 208.13 ms. Allocated memory is still 220.2 MB. Free memory was 169.7 MB in the beginning and 155.0 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: 537]: 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: 9565.9ms, OverallIterations: 12, TraceHistogramMax: 7, EmptinessCheckTime: 62.3ms, AutomataDifference: 5186.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 208.4ms, InitialAbstractionConstructionTime: 13.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 460 SDtfs, 873 SDslu, 60 SDs, 0 SdLazy, 2930 SolverSat, 720 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3538.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 541 GetRequests, 522 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 83.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=1139occurred in iteration=11, InterpolantAutomatonStates: 39, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 378.6ms AutomataMinimizationTime, 12 MinimizatonAttempts, 639 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 45 NumberOfFragments, 71 HoareAnnotationTreeSize, 3 FomulaSimplifications, 2628 FormulaSimplificationTreeSizeReduction, 107.8ms HoareSimplificationTime, 3 FomulaSimplificationsInter, 18 FormulaSimplificationTreeSizeReductionInter, 93.3ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 189.1ms SsaConstructionTime, 493.5ms SatisfiabilityAnalysisTime, 2440.5ms InterpolantComputationTime, 2011 NumberOfCodeBlocks, 2011 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 2252 ConstructedInterpolants, 0 QuantifiedInterpolants, 5706 SizeOfPredicates, 0 NumberOfNonLiveVariables, 502 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 14 InterpolantComputations, 13 PerfectInterpolantSequences, 2245/2348 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: (((((14 <= a8 && a21 == 1) && a16 <= 5) || (a21 == 1 && 15 <= a8)) || (a21 == 1 && a16 <= 4)) || a20 == 1) || (a17 == 1 && a16 <= 5) - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: (((((14 <= a8 && a21 == 1) && a16 <= 5) || (a21 == 1 && 15 <= a8)) || (a21 == 1 && a16 <= 4)) || a20 == 1) || (a17 == 1 && a16 <= 5) RESULT: Ultimate proved your program to be correct! [2021-10-20 06:12:24,930 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7919837-826b-4bbc-948a-df6ae852a3b9/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...