./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label24.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8b1fb7-d121-4e09-ab0f-4689f57ec03c/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8b1fb7-d121-4e09-ab0f-4689f57ec03c/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8b1fb7-d121-4e09-ab0f-4689f57ec03c/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8b1fb7-d121-4e09-ab0f-4689f57ec03c/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label24.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8b1fb7-d121-4e09-ab0f-4689f57ec03c/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8b1fb7-d121-4e09-ab0f-4689f57ec03c/bin/utaipan-WLngWcDbfI --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 7f5e2cf5778d35276df37ef4653bf7d5a3d1b66b ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:29:14,369 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:29:14,371 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:29:14,419 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:29:14,420 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:29:14,422 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:29:14,424 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:29:14,427 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:29:14,430 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:29:14,431 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:29:14,433 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:29:14,434 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:29:14,435 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:29:14,436 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:29:14,438 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:29:14,439 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:29:14,441 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:29:14,442 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:29:14,444 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:29:14,451 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:29:14,453 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:29:14,460 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:29:14,462 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:29:14,463 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:29:14,466 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:29:14,466 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:29:14,467 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:29:14,468 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:29:14,469 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:29:14,470 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:29:14,470 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:29:14,471 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:29:14,472 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:29:14,473 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:29:14,475 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:29:14,475 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:29:14,476 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:29:14,477 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:29:14,477 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:29:14,478 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:29:14,479 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:29:14,480 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8b1fb7-d121-4e09-ab0f-4689f57ec03c/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:29:14,506 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:29:14,507 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:29:14,508 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:29:14,508 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:29:14,508 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:29:14,509 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:29:14,509 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:29:14,509 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:29:14,509 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:29:14,510 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:29:14,510 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:29:14,510 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:29:14,510 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:29:14,510 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:29:14,511 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:29:14,511 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:29:14,512 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:29:14,512 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:29:14,512 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:29:14,512 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:29:14,512 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:29:14,512 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:29:14,513 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:29:14,513 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:29:14,513 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:29:14,513 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:29:14,514 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:29:14,514 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:29:14,514 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:29:14,514 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:29:14,514 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:29:14,515 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:29:14,515 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:29:14,515 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:29:14,516 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:29:14,516 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:29:14,516 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:29:14,516 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:29:14,516 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:29:14,517 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8b1fb7-d121-4e09-ab0f-4689f57ec03c/bin/utaipan-WLngWcDbfI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8b1fb7-d121-4e09-ab0f-4689f57ec03c/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7f5e2cf5778d35276df37ef4653bf7d5a3d1b66b [2021-10-11 02:29:14,795 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:29:14,837 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:29:14,842 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:29:14,844 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:29:14,845 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:29:14,846 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8b1fb7-d121-4e09-ab0f-4689f57ec03c/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/eca-rers2012/Problem01_label24.c [2021-10-11 02:29:14,962 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8b1fb7-d121-4e09-ab0f-4689f57ec03c/bin/utaipan-WLngWcDbfI/data/a2c01590a/bdbb6c8e7fe04b929b742ae8f2dc4938/FLAG658494f59 [2021-10-11 02:29:15,625 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:29:15,626 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8b1fb7-d121-4e09-ab0f-4689f57ec03c/sv-benchmarks/c/eca-rers2012/Problem01_label24.c [2021-10-11 02:29:15,656 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8b1fb7-d121-4e09-ab0f-4689f57ec03c/bin/utaipan-WLngWcDbfI/data/a2c01590a/bdbb6c8e7fe04b929b742ae8f2dc4938/FLAG658494f59 [2021-10-11 02:29:15,859 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8b1fb7-d121-4e09-ab0f-4689f57ec03c/bin/utaipan-WLngWcDbfI/data/a2c01590a/bdbb6c8e7fe04b929b742ae8f2dc4938 [2021-10-11 02:29:15,862 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:29:15,865 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:29:15,870 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:29:15,870 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:29:15,874 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:29:15,876 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:29:15" (1/1) ... [2021-10-11 02:29:15,878 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@730ec1bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:15, skipping insertion in model container [2021-10-11 02:29:15,879 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:29:15" (1/1) ... [2021-10-11 02:29:15,886 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:29:15,969 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:29:16,360 WARN L226 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_9f8b1fb7-d121-4e09-ab0f-4689f57ec03c/sv-benchmarks/c/eca-rers2012/Problem01_label24.c[17735,17748] [2021-10-11 02:29:16,431 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:29:16,458 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:29:16,578 WARN L226 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_9f8b1fb7-d121-4e09-ab0f-4689f57ec03c/sv-benchmarks/c/eca-rers2012/Problem01_label24.c[17735,17748] [2021-10-11 02:29:16,593 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:29:16,609 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:29:16,609 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:16 WrapperNode [2021-10-11 02:29:16,609 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:29:16,611 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:29:16,611 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:29:16,611 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:29:16,619 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:16" (1/1) ... [2021-10-11 02:29:16,639 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:16" (1/1) ... [2021-10-11 02:29:16,692 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:29:16,693 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:29:16,693 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:29:16,693 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:29:16,705 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:16" (1/1) ... [2021-10-11 02:29:16,705 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:16" (1/1) ... [2021-10-11 02:29:16,710 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:16" (1/1) ... [2021-10-11 02:29:16,710 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:16" (1/1) ... [2021-10-11 02:29:16,733 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:16" (1/1) ... [2021-10-11 02:29:16,743 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:16" (1/1) ... [2021-10-11 02:29:16,752 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:16" (1/1) ... [2021-10-11 02:29:16,762 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:29:16,763 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:29:16,764 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:29:16,764 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:29:16,765 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:16" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8b1fb7-d121-4e09-ab0f-4689f57ec03c/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:29:16,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:29:16,872 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:29:16,872 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:29:16,873 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:29:18,802 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:29:18,802 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-11 02:29:18,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:29:18 BoogieIcfgContainer [2021-10-11 02:29:18,807 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:29:18,809 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:29:18,809 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:29:18,813 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:29:18,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:29:15" (1/3) ... [2021-10-11 02:29:18,814 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cab7735 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:29:18, skipping insertion in model container [2021-10-11 02:29:18,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:16" (2/3) ... [2021-10-11 02:29:18,815 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cab7735 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:29:18, skipping insertion in model container [2021-10-11 02:29:18,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:29:18" (3/3) ... [2021-10-11 02:29:18,817 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label24.c [2021-10-11 02:29:18,832 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:29:18,836 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:29:18,847 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 02:29:18,884 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:29:18,884 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:29:18,885 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:29:18,885 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:29:18,886 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:29:18,886 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:29:18,886 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:29:18,886 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:29:18,904 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2021-10-11 02:29:18,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-10-11 02:29:18,920 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:29:18,920 INFO L422 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] [2021-10-11 02:29:18,921 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:29:18,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:29:18,928 INFO L82 PathProgramCache]: Analyzing trace with hash -1806912600, now seen corresponding path program 1 times [2021-10-11 02:29:18,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:29:18,938 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676020748] [2021-10-11 02:29:18,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:29:19,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:19,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:29:19,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676020748] [2021-10-11 02:29:19,369 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:29:19,369 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:29:19,370 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675260083] [2021-10-11 02:29:19,377 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:29:19,378 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:29:19,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:29:19,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:29:19,424 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 3 states. [2021-10-11 02:29:20,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:29:20,027 INFO L93 Difference]: Finished difference Result 224 states and 428 transitions. [2021-10-11 02:29:20,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:29:20,028 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 71 [2021-10-11 02:29:20,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:29:20,051 INFO L225 Difference]: With dead ends: 224 [2021-10-11 02:29:20,052 INFO L226 Difference]: Without dead ends: 145 [2021-10-11 02:29:20,074 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:29:20,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-10-11 02:29:20,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2021-10-11 02:29:20,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2021-10-11 02:29:20,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 259 transitions. [2021-10-11 02:29:20,182 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 259 transitions. Word has length 71 [2021-10-11 02:29:20,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:29:20,183 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 259 transitions. [2021-10-11 02:29:20,183 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:29:20,184 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 259 transitions. [2021-10-11 02:29:20,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-10-11 02:29:20,189 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:29:20,189 INFO L422 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] [2021-10-11 02:29:20,190 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:29:20,190 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:29:20,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:29:20,192 INFO L82 PathProgramCache]: Analyzing trace with hash -1034857093, now seen corresponding path program 1 times [2021-10-11 02:29:20,193 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:29:20,193 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102873844] [2021-10-11 02:29:20,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:29:20,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:20,301 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:29:20,301 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102873844] [2021-10-11 02:29:20,302 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:29:20,302 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:29:20,302 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068918167] [2021-10-11 02:29:20,303 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:29:20,304 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:29:20,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:29:20,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:29:20,305 INFO L87 Difference]: Start difference. First operand 145 states and 259 transitions. Second operand 3 states. [2021-10-11 02:29:20,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:29:20,740 INFO L93 Difference]: Finished difference Result 431 states and 774 transitions. [2021-10-11 02:29:20,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:29:20,740 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2021-10-11 02:29:20,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:29:20,748 INFO L225 Difference]: With dead ends: 431 [2021-10-11 02:29:20,748 INFO L226 Difference]: Without dead ends: 287 [2021-10-11 02:29:20,751 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:29:20,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2021-10-11 02:29:20,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2021-10-11 02:29:20,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2021-10-11 02:29:20,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 468 transitions. [2021-10-11 02:29:20,801 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 468 transitions. Word has length 77 [2021-10-11 02:29:20,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:29:20,801 INFO L481 AbstractCegarLoop]: Abstraction has 287 states and 468 transitions. [2021-10-11 02:29:20,801 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:29:20,801 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 468 transitions. [2021-10-11 02:29:20,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-10-11 02:29:20,804 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:29:20,804 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:29:20,805 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:29:20,805 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:29:20,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:29:20,805 INFO L82 PathProgramCache]: Analyzing trace with hash -1703777735, now seen corresponding path program 1 times [2021-10-11 02:29:20,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:29:20,806 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870128083] [2021-10-11 02:29:20,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:29:20,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:21,002 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:29:21,002 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870128083] [2021-10-11 02:29:21,003 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:29:21,003 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:29:21,003 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330835213] [2021-10-11 02:29:21,004 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:29:21,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:29:21,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:29:21,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:29:21,005 INFO L87 Difference]: Start difference. First operand 287 states and 468 transitions. Second operand 4 states. [2021-10-11 02:29:21,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:29:21,583 INFO L93 Difference]: Finished difference Result 713 states and 1141 transitions. [2021-10-11 02:29:21,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:29:21,584 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 78 [2021-10-11 02:29:21,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:29:21,590 INFO L225 Difference]: With dead ends: 713 [2021-10-11 02:29:21,590 INFO L226 Difference]: Without dead ends: 358 [2021-10-11 02:29:21,595 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:29:21,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2021-10-11 02:29:21,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 358. [2021-10-11 02:29:21,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 358 states. [2021-10-11 02:29:21,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 482 transitions. [2021-10-11 02:29:21,638 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 482 transitions. Word has length 78 [2021-10-11 02:29:21,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:29:21,639 INFO L481 AbstractCegarLoop]: Abstraction has 358 states and 482 transitions. [2021-10-11 02:29:21,639 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:29:21,639 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 482 transitions. [2021-10-11 02:29:21,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-10-11 02:29:21,645 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:29:21,645 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:29:21,645 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 02:29:21,646 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:29:21,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:29:21,646 INFO L82 PathProgramCache]: Analyzing trace with hash 350098807, now seen corresponding path program 1 times [2021-10-11 02:29:21,646 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:29:21,647 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562528236] [2021-10-11 02:29:21,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:29:21,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:21,710 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-11 02:29:21,710 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562528236] [2021-10-11 02:29:21,710 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:29:21,711 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:29:21,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245589640] [2021-10-11 02:29:21,711 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:29:21,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:29:21,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:29:21,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:29:21,712 INFO L87 Difference]: Start difference. First operand 358 states and 482 transitions. Second operand 3 states. [2021-10-11 02:29:22,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:29:22,102 INFO L93 Difference]: Finished difference Result 857 states and 1180 transitions. [2021-10-11 02:29:22,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:29:22,102 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 86 [2021-10-11 02:29:22,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:29:22,105 INFO L225 Difference]: With dead ends: 857 [2021-10-11 02:29:22,106 INFO L226 Difference]: Without dead ends: 500 [2021-10-11 02:29:22,106 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:29:22,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2021-10-11 02:29:22,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 500. [2021-10-11 02:29:22,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 500 states. [2021-10-11 02:29:22,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 649 transitions. [2021-10-11 02:29:22,128 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 649 transitions. Word has length 86 [2021-10-11 02:29:22,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:29:22,128 INFO L481 AbstractCegarLoop]: Abstraction has 500 states and 649 transitions. [2021-10-11 02:29:22,128 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:29:22,128 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 649 transitions. [2021-10-11 02:29:22,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-10-11 02:29:22,130 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:29:22,131 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:29:22,131 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 02:29:22,131 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:29:22,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:29:22,131 INFO L82 PathProgramCache]: Analyzing trace with hash -1470706213, now seen corresponding path program 1 times [2021-10-11 02:29:22,132 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:29:22,132 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454824195] [2021-10-11 02:29:22,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:29:22,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:22,188 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-11 02:29:22,188 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454824195] [2021-10-11 02:29:22,188 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:29:22,188 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:29:22,188 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663740731] [2021-10-11 02:29:22,189 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:29:22,189 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:29:22,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:29:22,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:29:22,190 INFO L87 Difference]: Start difference. First operand 500 states and 649 transitions. Second operand 3 states. [2021-10-11 02:29:22,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:29:22,609 INFO L93 Difference]: Finished difference Result 1496 states and 1944 transitions. [2021-10-11 02:29:22,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:29:22,609 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 95 [2021-10-11 02:29:22,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:29:22,615 INFO L225 Difference]: With dead ends: 1496 [2021-10-11 02:29:22,616 INFO L226 Difference]: Without dead ends: 997 [2021-10-11 02:29:22,617 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:29:22,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2021-10-11 02:29:22,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 784. [2021-10-11 02:29:22,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 784 states. [2021-10-11 02:29:22,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 1029 transitions. [2021-10-11 02:29:22,651 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 1029 transitions. Word has length 95 [2021-10-11 02:29:22,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:29:22,651 INFO L481 AbstractCegarLoop]: Abstraction has 784 states and 1029 transitions. [2021-10-11 02:29:22,651 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:29:22,651 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 1029 transitions. [2021-10-11 02:29:22,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-10-11 02:29:22,653 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:29:22,654 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-10-11 02:29:22,654 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-11 02:29:22,654 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:29:22,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:29:22,654 INFO L82 PathProgramCache]: Analyzing trace with hash 1745911626, now seen corresponding path program 1 times [2021-10-11 02:29:22,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:29:22,655 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368059098] [2021-10-11 02:29:22,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:29:22,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:22,723 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-11 02:29:22,724 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368059098] [2021-10-11 02:29:22,724 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:29:22,724 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:29:22,724 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901991597] [2021-10-11 02:29:22,725 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:29:22,725 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:29:22,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:29:22,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:29:22,726 INFO L87 Difference]: Start difference. First operand 784 states and 1029 transitions. Second operand 4 states. [2021-10-11 02:29:23,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:29:23,291 INFO L93 Difference]: Finished difference Result 1709 states and 2278 transitions. [2021-10-11 02:29:23,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:29:23,294 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 101 [2021-10-11 02:29:23,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:29:23,302 INFO L225 Difference]: With dead ends: 1709 [2021-10-11 02:29:23,303 INFO L226 Difference]: Without dead ends: 926 [2021-10-11 02:29:23,305 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:29:23,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2021-10-11 02:29:23,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 926. [2021-10-11 02:29:23,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 926 states. [2021-10-11 02:29:23,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1184 transitions. [2021-10-11 02:29:23,340 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1184 transitions. Word has length 101 [2021-10-11 02:29:23,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:29:23,346 INFO L481 AbstractCegarLoop]: Abstraction has 926 states and 1184 transitions. [2021-10-11 02:29:23,346 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:29:23,347 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1184 transitions. [2021-10-11 02:29:23,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-10-11 02:29:23,349 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:29:23,349 INFO L422 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, 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] [2021-10-11 02:29:23,350 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-11 02:29:23,350 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:29:23,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:29:23,350 INFO L82 PathProgramCache]: Analyzing trace with hash -656961203, now seen corresponding path program 1 times [2021-10-11 02:29:23,351 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:29:23,351 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573237871] [2021-10-11 02:29:23,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:29:23,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:23,493 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-11 02:29:23,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573237871] [2021-10-11 02:29:23,494 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:29:23,494 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:29:23,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126716406] [2021-10-11 02:29:23,495 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:29:23,496 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:29:23,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:29:23,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:29:23,497 INFO L87 Difference]: Start difference. First operand 926 states and 1184 transitions. Second operand 4 states. [2021-10-11 02:29:24,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:29:24,116 INFO L93 Difference]: Finished difference Result 2206 states and 2814 transitions. [2021-10-11 02:29:24,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:29:24,117 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 115 [2021-10-11 02:29:24,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:29:24,125 INFO L225 Difference]: With dead ends: 2206 [2021-10-11 02:29:24,125 INFO L226 Difference]: Without dead ends: 1281 [2021-10-11 02:29:24,127 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:29:24,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1281 states. [2021-10-11 02:29:24,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1281 to 1210. [2021-10-11 02:29:24,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1210 states. [2021-10-11 02:29:24,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1210 states to 1210 states and 1513 transitions. [2021-10-11 02:29:24,163 INFO L78 Accepts]: Start accepts. Automaton has 1210 states and 1513 transitions. Word has length 115 [2021-10-11 02:29:24,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:29:24,163 INFO L481 AbstractCegarLoop]: Abstraction has 1210 states and 1513 transitions. [2021-10-11 02:29:24,164 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:29:24,164 INFO L276 IsEmpty]: Start isEmpty. Operand 1210 states and 1513 transitions. [2021-10-11 02:29:24,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-10-11 02:29:24,170 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:29:24,170 INFO L422 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, 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] [2021-10-11 02:29:24,170 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-11 02:29:24,170 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:29:24,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:29:24,171 INFO L82 PathProgramCache]: Analyzing trace with hash 905965608, now seen corresponding path program 1 times [2021-10-11 02:29:24,171 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:29:24,172 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743920266] [2021-10-11 02:29:24,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:29:24,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:24,329 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 66 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:29:24,329 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743920266] [2021-10-11 02:29:24,329 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [335535878] [2021-10-11 02:29:24,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8b1fb7-d121-4e09-ab0f-4689f57ec03c/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:29:24,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:24,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:29:24,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:29:24,817 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-10-11 02:29:24,817 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:29:24,988 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-10-11 02:29:24,989 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:29:24,989 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 5 [2021-10-11 02:29:24,991 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299918151] [2021-10-11 02:29:24,991 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:29:24,992 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:29:24,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:29:24,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:29:24,994 INFO L87 Difference]: Start difference. First operand 1210 states and 1513 transitions. Second operand 3 states. [2021-10-11 02:29:25,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:29:25,317 INFO L93 Difference]: Finished difference Result 2419 states and 3025 transitions. [2021-10-11 02:29:25,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:29:25,317 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 132 [2021-10-11 02:29:25,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:29:25,324 INFO L225 Difference]: With dead ends: 2419 [2021-10-11 02:29:25,324 INFO L226 Difference]: Without dead ends: 1210 [2021-10-11 02:29:25,326 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 262 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:29:25,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2021-10-11 02:29:25,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 1068. [2021-10-11 02:29:25,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1068 states. [2021-10-11 02:29:25,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1290 transitions. [2021-10-11 02:29:25,374 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1290 transitions. Word has length 132 [2021-10-11 02:29:25,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:29:25,375 INFO L481 AbstractCegarLoop]: Abstraction has 1068 states and 1290 transitions. [2021-10-11 02:29:25,375 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:29:25,375 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1290 transitions. [2021-10-11 02:29:25,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-10-11 02:29:25,378 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:29:25,379 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:29:25,605 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-10-11 02:29:25,605 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:29:25,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:29:25,606 INFO L82 PathProgramCache]: Analyzing trace with hash -1083766142, now seen corresponding path program 1 times [2021-10-11 02:29:25,606 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:29:25,606 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671931936] [2021-10-11 02:29:25,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:29:25,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:25,767 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 96 proven. 11 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-10-11 02:29:25,768 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671931936] [2021-10-11 02:29:25,768 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1076688052] [2021-10-11 02:29:25,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8b1fb7-d121-4e09-ab0f-4689f57ec03c/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:29:25,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:25,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:29:25,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:29:26,056 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-10-11 02:29:26,057 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:29:26,208 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-10-11 02:29:26,210 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:29:26,215 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 5 [2021-10-11 02:29:26,215 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003825102] [2021-10-11 02:29:26,216 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:29:26,216 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:29:26,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:29:26,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:29:26,217 INFO L87 Difference]: Start difference. First operand 1068 states and 1290 transitions. Second operand 3 states. [2021-10-11 02:29:26,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:29:26,613 INFO L93 Difference]: Finished difference Result 2206 states and 2674 transitions. [2021-10-11 02:29:26,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:29:26,614 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 148 [2021-10-11 02:29:26,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:29:26,620 INFO L225 Difference]: With dead ends: 2206 [2021-10-11 02:29:26,620 INFO L226 Difference]: Without dead ends: 1139 [2021-10-11 02:29:26,622 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 294 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:29:26,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1139 states. [2021-10-11 02:29:26,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1139 to 1139. [2021-10-11 02:29:26,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1139 states. [2021-10-11 02:29:26,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 1334 transitions. [2021-10-11 02:29:26,675 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 1334 transitions. Word has length 148 [2021-10-11 02:29:26,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:29:26,676 INFO L481 AbstractCegarLoop]: Abstraction has 1139 states and 1334 transitions. [2021-10-11 02:29:26,676 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:29:26,676 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 1334 transitions. [2021-10-11 02:29:26,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-10-11 02:29:26,679 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:29:26,680 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2021-10-11 02:29:26,893 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:29:26,893 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:29:26,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:29:26,894 INFO L82 PathProgramCache]: Analyzing trace with hash -1216276442, now seen corresponding path program 1 times [2021-10-11 02:29:26,894 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:29:26,894 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259087023] [2021-10-11 02:29:26,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:29:26,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:27,047 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-11 02:29:27,048 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259087023] [2021-10-11 02:29:27,048 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:29:27,048 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:29:27,048 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54952134] [2021-10-11 02:29:27,049 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:29:27,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:29:27,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:29:27,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:29:27,050 INFO L87 Difference]: Start difference. First operand 1139 states and 1334 transitions. Second operand 4 states. [2021-10-11 02:29:27,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:29:27,530 INFO L93 Difference]: Finished difference Result 2490 states and 2900 transitions. [2021-10-11 02:29:27,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:29:27,531 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 151 [2021-10-11 02:29:27,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:29:27,538 INFO L225 Difference]: With dead ends: 2490 [2021-10-11 02:29:27,538 INFO L226 Difference]: Without dead ends: 1352 [2021-10-11 02:29:27,540 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:29:27,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1352 states. [2021-10-11 02:29:27,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1352 to 1139. [2021-10-11 02:29:27,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1139 states. [2021-10-11 02:29:27,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 1322 transitions. [2021-10-11 02:29:27,567 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 1322 transitions. Word has length 151 [2021-10-11 02:29:27,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:29:27,568 INFO L481 AbstractCegarLoop]: Abstraction has 1139 states and 1322 transitions. [2021-10-11 02:29:27,568 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:29:27,568 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 1322 transitions. [2021-10-11 02:29:27,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-10-11 02:29:27,572 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:29:27,572 INFO L422 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, 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] [2021-10-11 02:29:27,572 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-11 02:29:27,572 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:29:27,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:29:27,573 INFO L82 PathProgramCache]: Analyzing trace with hash 2109682500, now seen corresponding path program 1 times [2021-10-11 02:29:27,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:29:27,573 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027330758] [2021-10-11 02:29:27,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:29:27,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:27,723 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 195 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-10-11 02:29:27,723 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027330758] [2021-10-11 02:29:27,723 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:29:27,723 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:29:27,724 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718025924] [2021-10-11 02:29:27,724 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:29:27,724 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:29:27,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:29:27,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:29:27,725 INFO L87 Difference]: Start difference. First operand 1139 states and 1322 transitions. Second operand 3 states. [2021-10-11 02:29:28,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:29:28,070 INFO L93 Difference]: Finished difference Result 2561 states and 2971 transitions. [2021-10-11 02:29:28,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:29:28,071 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 194 [2021-10-11 02:29:28,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:29:28,078 INFO L225 Difference]: With dead ends: 2561 [2021-10-11 02:29:28,078 INFO L226 Difference]: Without dead ends: 1423 [2021-10-11 02:29:28,080 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:29:28,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1423 states. [2021-10-11 02:29:28,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1423 to 1352. [2021-10-11 02:29:28,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1352 states. [2021-10-11 02:29:28,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 1533 transitions. [2021-10-11 02:29:28,111 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 1533 transitions. Word has length 194 [2021-10-11 02:29:28,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:29:28,111 INFO L481 AbstractCegarLoop]: Abstraction has 1352 states and 1533 transitions. [2021-10-11 02:29:28,111 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:29:28,111 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 1533 transitions. [2021-10-11 02:29:28,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2021-10-11 02:29:28,116 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:29:28,116 INFO L422 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, 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:29:28,117 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-11 02:29:28,117 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:29:28,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:29:28,117 INFO L82 PathProgramCache]: Analyzing trace with hash 236743245, now seen corresponding path program 1 times [2021-10-11 02:29:28,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:29:28,118 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037577045] [2021-10-11 02:29:28,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:29:28,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:28,526 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 143 proven. 86 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2021-10-11 02:29:28,526 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037577045] [2021-10-11 02:29:28,527 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [368060399] [2021-10-11 02:29:28,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8b1fb7-d121-4e09-ab0f-4689f57ec03c/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:29:28,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:28,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:29:28,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:29:28,903 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2021-10-11 02:29:28,903 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:29:29,083 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2021-10-11 02:29:29,085 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:29:29,085 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2021-10-11 02:29:29,085 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85354911] [2021-10-11 02:29:29,086 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:29:29,086 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:29:29,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:29:29,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:29:29,088 INFO L87 Difference]: Start difference. First operand 1352 states and 1533 transitions. Second operand 3 states. [2021-10-11 02:29:29,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:29:29,414 INFO L93 Difference]: Finished difference Result 3058 states and 3474 transitions. [2021-10-11 02:29:29,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:29:29,414 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 216 [2021-10-11 02:29:29,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:29:29,421 INFO L225 Difference]: With dead ends: 3058 [2021-10-11 02:29:29,421 INFO L226 Difference]: Without dead ends: 1352 [2021-10-11 02:29:29,427 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 435 GetRequests, 430 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:29:29,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1352 states. [2021-10-11 02:29:29,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1352 to 1352. [2021-10-11 02:29:29,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1352 states. [2021-10-11 02:29:29,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 1494 transitions. [2021-10-11 02:29:29,458 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 1494 transitions. Word has length 216 [2021-10-11 02:29:29,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:29:29,459 INFO L481 AbstractCegarLoop]: Abstraction has 1352 states and 1494 transitions. [2021-10-11 02:29:29,459 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:29:29,459 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 1494 transitions. [2021-10-11 02:29:29,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2021-10-11 02:29:29,464 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:29:29,464 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 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, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:29:29,689 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-10-11 02:29:29,689 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:29:29,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:29:29,690 INFO L82 PathProgramCache]: Analyzing trace with hash -706789139, now seen corresponding path program 1 times [2021-10-11 02:29:29,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:29:29,690 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513483010] [2021-10-11 02:29:29,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:29:29,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:29,886 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 307 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2021-10-11 02:29:29,886 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513483010] [2021-10-11 02:29:29,887 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:29:29,887 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:29:29,890 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191182312] [2021-10-11 02:29:29,891 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:29:29,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:29:29,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:29:29,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:29:29,893 INFO L87 Difference]: Start difference. First operand 1352 states and 1494 transitions. Second operand 3 states. [2021-10-11 02:29:30,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:29:30,178 INFO L93 Difference]: Finished difference Result 2204 states and 2451 transitions. [2021-10-11 02:29:30,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:29:30,179 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 245 [2021-10-11 02:29:30,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:29:30,180 INFO L225 Difference]: With dead ends: 2204 [2021-10-11 02:29:30,180 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:29:30,182 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:29:30,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:29:30,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:29:30,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:29:30,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:29:30,183 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 245 [2021-10-11 02:29:30,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:29:30,183 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:29:30,183 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:29:30,184 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:29:30,184 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:29:30,184 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-11 02:29:30,186 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 02:29:30,500 WARN L197 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 32 [2021-10-11 02:29:30,720 WARN L197 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 32 [2021-10-11 02:29:30,724 INFO L262 CegarLoopResult]: For program point L102(lines 102 400) no Hoare annotation was computed. [2021-10-11 02:29:30,724 INFO L262 CegarLoopResult]: For program point L598(line 598) no Hoare annotation was computed. [2021-10-11 02:29:30,724 INFO L262 CegarLoopResult]: For program point L334(lines 334 400) no Hoare annotation was computed. [2021-10-11 02:29:30,724 INFO L262 CegarLoopResult]: For program point L302(lines 302 400) no Hoare annotation was computed. [2021-10-11 02:29:30,724 INFO L262 CegarLoopResult]: For program point L170(lines 170 400) no Hoare annotation was computed. [2021-10-11 02:29:30,725 INFO L262 CegarLoopResult]: For program point L204(lines 204 400) no Hoare annotation was computed. [2021-10-11 02:29:30,725 INFO L262 CegarLoopResult]: For program point L72(lines 72 400) no Hoare annotation was computed. [2021-10-11 02:29:30,725 INFO L262 CegarLoopResult]: For program point L271(lines 271 400) no Hoare annotation was computed. [2021-10-11 02:29:30,725 INFO L262 CegarLoopResult]: For program point L139(lines 139 400) no Hoare annotation was computed. [2021-10-11 02:29:30,725 INFO L262 CegarLoopResult]: For program point L371(lines 371 400) no Hoare annotation was computed. [2021-10-11 02:29:30,725 INFO L262 CegarLoopResult]: For program point L107(lines 107 400) no Hoare annotation was computed. [2021-10-11 02:29:30,725 INFO L262 CegarLoopResult]: For program point L41(lines 41 400) no Hoare annotation was computed. [2021-10-11 02:29:30,727 INFO L262 CegarLoopResult]: For program point L339(lines 339 400) no Hoare annotation was computed. [2021-10-11 02:29:30,727 INFO L262 CegarLoopResult]: For program point L207(lines 207 400) no Hoare annotation was computed. [2021-10-11 02:29:30,727 INFO L262 CegarLoopResult]: For program point L75(lines 75 400) no Hoare annotation was computed. [2021-10-11 02:29:30,727 INFO L262 CegarLoopResult]: For program point L373(lines 373 400) no Hoare annotation was computed. [2021-10-11 02:29:30,727 INFO L262 CegarLoopResult]: For program point L241(lines 241 400) no Hoare annotation was computed. [2021-10-11 02:29:30,727 INFO L262 CegarLoopResult]: For program point L175(lines 175 400) no Hoare annotation was computed. [2021-10-11 02:29:30,728 INFO L262 CegarLoopResult]: For program point L275(lines 275 400) no Hoare annotation was computed. [2021-10-11 02:29:30,728 INFO L262 CegarLoopResult]: For program point L375(lines 375 400) no Hoare annotation was computed. [2021-10-11 02:29:30,728 INFO L262 CegarLoopResult]: For program point L309(lines 309 400) no Hoare annotation was computed. [2021-10-11 02:29:30,728 INFO L262 CegarLoopResult]: For program point L45(lines 45 400) no Hoare annotation was computed. [2021-10-11 02:29:30,728 INFO L262 CegarLoopResult]: For program point L343(lines 343 400) no Hoare annotation was computed. [2021-10-11 02:29:30,729 INFO L262 CegarLoopResult]: For program point L112(lines 112 400) no Hoare annotation was computed. [2021-10-11 02:29:30,729 INFO L262 CegarLoopResult]: For program point L476-1(lines 40 585) no Hoare annotation was computed. [2021-10-11 02:29:30,730 INFO L262 CegarLoopResult]: For program point L278(lines 278 400) no Hoare annotation was computed. [2021-10-11 02:29:30,730 INFO L262 CegarLoopResult]: For program point L146(lines 146 400) no Hoare annotation was computed. [2021-10-11 02:29:30,731 INFO L262 CegarLoopResult]: For program point L213(lines 213 400) no Hoare annotation was computed. [2021-10-11 02:29:30,731 INFO L262 CegarLoopResult]: For program point L82(lines 82 400) no Hoare annotation was computed. [2021-10-11 02:29:30,731 INFO L262 CegarLoopResult]: For program point L479-1(lines 40 585) no Hoare annotation was computed. [2021-10-11 02:29:30,732 INFO L262 CegarLoopResult]: For program point L347(lines 347 400) no Hoare annotation was computed. [2021-10-11 02:29:30,732 INFO L262 CegarLoopResult]: For program point L248(lines 248 400) no Hoare annotation was computed. [2021-10-11 02:29:30,732 INFO L262 CegarLoopResult]: For program point L480(line 480) no Hoare annotation was computed. [2021-10-11 02:29:30,732 INFO L262 CegarLoopResult]: For program point L183(lines 183 400) no Hoare annotation was computed. [2021-10-11 02:29:30,732 INFO L262 CegarLoopResult]: For program point L150(lines 150 400) no Hoare annotation was computed. [2021-10-11 02:29:30,732 INFO L262 CegarLoopResult]: For program point L382(lines 382 400) no Hoare annotation was computed. [2021-10-11 02:29:30,732 INFO L262 CegarLoopResult]: For program point L316(lines 316 400) no Hoare annotation was computed. [2021-10-11 02:29:30,733 INFO L262 CegarLoopResult]: For program point L283(lines 283 400) no Hoare annotation was computed. [2021-10-11 02:29:30,733 INFO L262 CegarLoopResult]: For program point L118(lines 118 400) no Hoare annotation was computed. [2021-10-11 02:29:30,733 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 02:29:30,734 INFO L262 CegarLoopResult]: For program point L218(lines 218 400) no Hoare annotation was computed. [2021-10-11 02:29:30,734 INFO L262 CegarLoopResult]: For program point L53(lines 53 400) no Hoare annotation was computed. [2021-10-11 02:29:30,734 INFO L262 CegarLoopResult]: For program point L154(lines 154 400) no Hoare annotation was computed. [2021-10-11 02:29:30,736 INFO L258 CegarLoopResult]: At program point L584(lines 40 585) the Hoare annotation is: (let ((.cse6 (<= ~a7~0 0)) (.cse2 (= ~a20~0 1)) (.cse3 (<= ~a8~0 14)) (.cse5 (= ~a21~0 1)) (.cse4 (= ~a7~0 1)) (.cse0 (<= ~a16~0 5)) (.cse7 (<= ~a20~0 0))) (or (and (let ((.cse1 (<= ~a21~0 0))) (or (and .cse0 .cse1 (= ~a17~0 1)) (and .cse2 .cse1))) .cse3 .cse4) (and .cse5 (= ~a16~0 6) .cse6 .cse7) (and .cse3 .cse5 .cse2) (and .cse5 .cse0 .cse6 .cse7) (and .cse5 .cse6 .cse2) (and .cse3 .cse5 .cse0 .cse7) (and .cse5 .cse4 .cse0 .cse7))) [2021-10-11 02:29:30,736 INFO L262 CegarLoopResult]: For program point L188(lines 188 400) no Hoare annotation was computed. [2021-10-11 02:29:30,736 INFO L262 CegarLoopResult]: For program point L387(lines 387 400) no Hoare annotation was computed. [2021-10-11 02:29:30,737 INFO L262 CegarLoopResult]: For program point L288(lines 288 400) no Hoare annotation was computed. [2021-10-11 02:29:30,737 INFO L262 CegarLoopResult]: For program point L255(lines 255 400) no Hoare annotation was computed. [2021-10-11 02:29:30,737 INFO L262 CegarLoopResult]: For program point L90(lines 90 400) no Hoare annotation was computed. [2021-10-11 02:29:30,737 INFO L262 CegarLoopResult]: For program point L355(lines 355 400) no Hoare annotation was computed. [2021-10-11 02:29:30,737 INFO L262 CegarLoopResult]: For program point L322(lines 322 400) no Hoare annotation was computed. [2021-10-11 02:29:30,737 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 02:29:30,737 INFO L262 CegarLoopResult]: For program point L124(lines 124 400) no Hoare annotation was computed. [2021-10-11 02:29:30,738 INFO L265 CegarLoopResult]: At program point L587(lines 587 604) the Hoare annotation is: true [2021-10-11 02:29:30,738 INFO L262 CegarLoopResult]: For program point L224(lines 224 400) no Hoare annotation was computed. [2021-10-11 02:29:30,738 INFO L262 CegarLoopResult]: For program point L158(lines 158 400) no Hoare annotation was computed. [2021-10-11 02:29:30,738 INFO L262 CegarLoopResult]: For program point L59(lines 59 400) no Hoare annotation was computed. [2021-10-11 02:29:30,738 INFO L262 CegarLoopResult]: For program point L94(lines 94 400) no Hoare annotation was computed. [2021-10-11 02:29:30,738 INFO L262 CegarLoopResult]: For program point L392(lines 392 400) no Hoare annotation was computed. [2021-10-11 02:29:30,738 INFO L262 CegarLoopResult]: For program point L326(lines 326 400) no Hoare annotation was computed. [2021-10-11 02:29:30,739 INFO L262 CegarLoopResult]: For program point L260(lines 260 400) no Hoare annotation was computed. [2021-10-11 02:29:30,739 INFO L262 CegarLoopResult]: For program point L228(lines 228 400) no Hoare annotation was computed. [2021-10-11 02:29:30,739 INFO L262 CegarLoopResult]: For program point L162(lines 162 400) no Hoare annotation was computed. [2021-10-11 02:29:30,739 INFO L262 CegarLoopResult]: For program point L129(lines 129 400) no Hoare annotation was computed. [2021-10-11 02:29:30,739 INFO L262 CegarLoopResult]: For program point L328(lines 328 400) no Hoare annotation was computed. [2021-10-11 02:29:30,739 INFO L262 CegarLoopResult]: For program point L196(lines 196 400) no Hoare annotation was computed. [2021-10-11 02:29:30,739 INFO L262 CegarLoopResult]: For program point L64(lines 64 400) no Hoare annotation was computed. [2021-10-11 02:29:30,740 INFO L258 CegarLoopResult]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse6 (<= ~a7~0 0)) (.cse2 (= ~a20~0 1)) (.cse3 (<= ~a8~0 14)) (.cse5 (= ~a21~0 1)) (.cse4 (= ~a7~0 1)) (.cse0 (<= ~a16~0 5)) (.cse7 (<= ~a20~0 0))) (or (and (let ((.cse1 (<= ~a21~0 0))) (or (and .cse0 .cse1 (= ~a17~0 1)) (and .cse2 .cse1))) .cse3 .cse4) (and .cse5 (= ~a16~0 6) .cse6 .cse7) (and .cse3 .cse5 .cse2) (and .cse5 .cse0 .cse6 .cse7) (and .cse5 .cse6 .cse2) (and .cse3 .cse5 .cse0 .cse7) (and .cse5 .cse4 .cse0 .cse7))) [2021-10-11 02:29:30,740 INFO L262 CegarLoopResult]: For program point L296(lines 296 400) no Hoare annotation was computed. [2021-10-11 02:29:30,740 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 480) no Hoare annotation was computed. [2021-10-11 02:29:30,741 INFO L262 CegarLoopResult]: For program point L363(lines 363 400) no Hoare annotation was computed. [2021-10-11 02:29:30,741 INFO L262 CegarLoopResult]: For program point L199(lines 199 400) no Hoare annotation was computed. [2021-10-11 02:29:30,741 INFO L262 CegarLoopResult]: For program point L365(lines 365 400) no Hoare annotation was computed. [2021-10-11 02:29:30,741 INFO L262 CegarLoopResult]: For program point L266(lines 266 400) no Hoare annotation was computed. [2021-10-11 02:29:30,741 INFO L262 CegarLoopResult]: For program point L233(lines 233 400) no Hoare annotation was computed. [2021-10-11 02:29:30,741 INFO L262 CegarLoopResult]: For program point L134(lines 134 400) no Hoare annotation was computed. [2021-10-11 02:29:30,776 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:29:30 BoogieIcfgContainer [2021-10-11 02:29:30,776 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:29:30,776 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:29:30,777 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:29:30,777 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:29:30,777 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:29:18" (3/4) ... [2021-10-11 02:29:30,781 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:29:30,802 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 103 nodes and edges [2021-10-11 02:29:30,804 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2021-10-11 02:29:30,806 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2021-10-11 02:29:30,808 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-11 02:29:30,935 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8b1fb7-d121-4e09-ab0f-4689f57ec03c/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:29:30,935 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:29:30,936 INFO L168 Benchmark]: Toolchain (without parser) took 15070.86 ms. Allocated memory was 92.3 MB in the beginning and 375.4 MB in the end (delta: 283.1 MB). Free memory was 56.5 MB in the beginning and 280.5 MB in the end (delta: -224.0 MB). Peak memory consumption was 60.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:30,936 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 92.3 MB. Free memory is still 70.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:29:30,937 INFO L168 Benchmark]: CACSL2BoogieTranslator took 739.85 ms. Allocated memory is still 92.3 MB. Free memory was 56.3 MB in the beginning and 54.0 MB in the end (delta: 2.3 MB). Peak memory consumption was 14.9 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:30,937 INFO L168 Benchmark]: Boogie Procedure Inliner took 81.19 ms. Allocated memory is still 92.3 MB. Free memory was 53.6 MB in the beginning and 48.2 MB in the end (delta: 5.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:30,938 INFO L168 Benchmark]: Boogie Preprocessor took 69.99 ms. Allocated memory is still 92.3 MB. Free memory was 48.2 MB in the beginning and 43.5 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:30,938 INFO L168 Benchmark]: RCFGBuilder took 2043.87 ms. Allocated memory was 92.3 MB in the beginning and 130.0 MB in the end (delta: 37.7 MB). Free memory was 43.5 MB in the beginning and 87.5 MB in the end (delta: -44.0 MB). Peak memory consumption was 39.0 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:30,939 INFO L168 Benchmark]: TraceAbstraction took 11966.95 ms. Allocated memory was 130.0 MB in the beginning and 375.4 MB in the end (delta: 245.4 MB). Free memory was 87.5 MB in the beginning and 295.2 MB in the end (delta: -207.7 MB). Peak memory consumption was 174.0 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:30,939 INFO L168 Benchmark]: Witness Printer took 158.69 ms. Allocated memory is still 375.4 MB. Free memory was 295.2 MB in the beginning and 280.5 MB in the end (delta: 14.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:30,941 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 92.3 MB. Free memory is still 70.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 739.85 ms. Allocated memory is still 92.3 MB. Free memory was 56.3 MB in the beginning and 54.0 MB in the end (delta: 2.3 MB). Peak memory consumption was 14.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 81.19 ms. Allocated memory is still 92.3 MB. Free memory was 53.6 MB in the beginning and 48.2 MB in the end (delta: 5.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 69.99 ms. Allocated memory is still 92.3 MB. Free memory was 48.2 MB in the beginning and 43.5 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2043.87 ms. Allocated memory was 92.3 MB in the beginning and 130.0 MB in the end (delta: 37.7 MB). Free memory was 43.5 MB in the beginning and 87.5 MB in the end (delta: -44.0 MB). Peak memory consumption was 39.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 11966.95 ms. Allocated memory was 130.0 MB in the beginning and 375.4 MB in the end (delta: 245.4 MB). Free memory was 87.5 MB in the beginning and 295.2 MB in the end (delta: -207.7 MB). Peak memory consumption was 174.0 MB. Max. memory is 16.1 GB. * Witness Printer took 158.69 ms. Allocated memory is still 375.4 MB. Free memory was 295.2 MB in the beginning and 280.5 MB in the end (delta: 14.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 480]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: ((((((((((a16 <= 5 && a21 <= 0) && a17 == 1) || (a20 == 1 && a21 <= 0)) && a8 <= 14) && a7 == 1) || (((a21 == 1 && a16 == 6) && a7 <= 0) && a20 <= 0)) || ((a8 <= 14 && a21 == 1) && a20 == 1)) || (((a21 == 1 && a16 <= 5) && a7 <= 0) && a20 <= 0)) || ((a21 == 1 && a7 <= 0) && a20 == 1)) || (((a8 <= 14 && a21 == 1) && a16 <= 5) && a20 <= 0)) || (((a21 == 1 && a7 == 1) && a16 <= 5) && a20 <= 0) - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: ((((((((((a16 <= 5 && a21 <= 0) && a17 == 1) || (a20 == 1 && a21 <= 0)) && a8 <= 14) && a7 == 1) || (((a21 == 1 && a16 == 6) && a7 <= 0) && a20 <= 0)) || ((a8 <= 14 && a21 == 1) && a20 == 1)) || (((a21 == 1 && a16 <= 5) && a7 <= 0) && a20 <= 0)) || ((a21 == 1 && a7 <= 0) && a20 == 1)) || (((a8 <= 14 && a21 == 1) && a16 <= 5) && a20 <= 0)) || (((a21 == 1 && a7 == 1) && a16 <= 5) && a20 <= 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 11.3s, OverallIterations: 13, TraceHistogramMax: 7, AutomataDifference: 5.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 779 SDtfs, 1020 SDslu, 59 SDs, 0 SdLazy, 2935 SolverSat, 673 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1026 GetRequests, 999 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1352occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 13 MinimizatonAttempts, 710 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 43 NumberOfFragments, 197 HoareAnnotationTreeSize, 3 FomulaSimplifications, 2140 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 604 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 2205 NumberOfCodeBlocks, 2205 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 2682 ConstructedInterpolants, 0 QuantifiedInterpolants, 1372771 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1161 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 19 InterpolantComputations, 16 PerfectInterpolantSequences, 2263/2371 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 RESULT: Ultimate proved your program to be correct! Received shutdown request...