./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem02_label29.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_b6758f07-db55-4a01-b82c-1cb3d723e7e0/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6758f07-db55-4a01-b82c-1cb3d723e7e0/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_b6758f07-db55-4a01-b82c-1cb3d723e7e0/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6758f07-db55-4a01-b82c-1cb3d723e7e0/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem02_label29.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6758f07-db55-4a01-b82c-1cb3d723e7e0/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_b6758f07-db55-4a01-b82c-1cb3d723e7e0/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 5ed5f96ec62512a1ce27f5120a7de01f72ef15e0 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 02:25:27,383 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:25:27,386 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:25:27,429 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:25:27,430 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:25:27,431 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:25:27,433 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:25:27,435 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:25:27,438 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:25:27,439 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:25:27,440 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:25:27,442 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:25:27,442 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:25:27,444 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:25:27,445 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:25:27,447 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:25:27,448 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:25:27,449 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:25:27,451 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:25:27,454 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:25:27,456 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:25:27,457 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:25:27,459 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:25:27,460 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:25:27,464 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:25:27,464 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:25:27,465 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:25:27,466 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:25:27,467 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:25:27,468 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:25:27,469 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:25:27,470 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:25:27,471 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:25:27,472 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:25:27,474 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:25:27,474 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:25:27,475 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:25:27,476 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:25:27,476 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:25:27,477 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:25:27,478 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:25:27,479 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6758f07-db55-4a01-b82c-1cb3d723e7e0/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:25:27,503 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:25:27,503 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:25:27,504 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:25:27,504 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:25:27,504 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:25:27,505 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:25:27,505 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:25:27,505 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:25:27,505 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:25:27,506 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:25:27,506 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:25:27,506 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:25:27,507 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:25:27,507 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:25:27,507 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:25:27,508 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:25:27,508 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:25:27,509 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:25:27,509 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:25:27,509 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:25:27,510 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:25:27,510 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:25:27,510 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:25:27,510 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:25:27,511 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:25:27,511 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:25:27,511 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:25:27,511 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:25:27,512 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:25:27,512 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:25:27,512 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:25:27,513 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:25:27,513 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:25:27,513 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:25:27,514 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:25:27,514 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:25:27,514 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:25:27,514 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:25:27,514 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:25:27,515 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_b6758f07-db55-4a01-b82c-1cb3d723e7e0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6758f07-db55-4a01-b82c-1cb3d723e7e0/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5ed5f96ec62512a1ce27f5120a7de01f72ef15e0 [2021-10-11 02:25:27,800 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:25:27,823 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:25:27,825 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:25:27,827 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:25:27,828 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:25:27,829 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6758f07-db55-4a01-b82c-1cb3d723e7e0/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/eca-rers2012/Problem02_label29.c [2021-10-11 02:25:27,905 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6758f07-db55-4a01-b82c-1cb3d723e7e0/bin/utaipan-WLngWcDbfI/data/e26c0f6a7/2a5d1add6bf447d8a0ed9faf3c654228/FLAGf78b7dcd4 [2021-10-11 02:25:28,418 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:25:28,419 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6758f07-db55-4a01-b82c-1cb3d723e7e0/sv-benchmarks/c/eca-rers2012/Problem02_label29.c [2021-10-11 02:25:28,438 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6758f07-db55-4a01-b82c-1cb3d723e7e0/bin/utaipan-WLngWcDbfI/data/e26c0f6a7/2a5d1add6bf447d8a0ed9faf3c654228/FLAGf78b7dcd4 [2021-10-11 02:25:28,714 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6758f07-db55-4a01-b82c-1cb3d723e7e0/bin/utaipan-WLngWcDbfI/data/e26c0f6a7/2a5d1add6bf447d8a0ed9faf3c654228 [2021-10-11 02:25:28,716 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:25:28,718 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:25:28,720 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:25:28,720 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:25:28,724 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:25:28,725 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:25:28" (1/1) ... [2021-10-11 02:25:28,727 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f655b04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:28, skipping insertion in model container [2021-10-11 02:25:28,727 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:25:28" (1/1) ... [2021-10-11 02:25:28,735 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:25:28,789 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:25:29,157 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_b6758f07-db55-4a01-b82c-1cb3d723e7e0/sv-benchmarks/c/eca-rers2012/Problem02_label29.c[17015,17028] [2021-10-11 02:25:29,216 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:25:29,226 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:25:29,377 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_b6758f07-db55-4a01-b82c-1cb3d723e7e0/sv-benchmarks/c/eca-rers2012/Problem02_label29.c[17015,17028] [2021-10-11 02:25:29,420 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:25:29,434 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:25:29,435 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:29 WrapperNode [2021-10-11 02:25:29,435 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:25:29,436 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:25:29,436 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:25:29,436 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:25:29,444 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:29" (1/1) ... [2021-10-11 02:25:29,463 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:29" (1/1) ... [2021-10-11 02:25:29,519 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:25:29,531 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:25:29,531 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:25:29,531 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:25:29,540 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:29" (1/1) ... [2021-10-11 02:25:29,540 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:29" (1/1) ... [2021-10-11 02:25:29,544 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:29" (1/1) ... [2021-10-11 02:25:29,545 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:29" (1/1) ... [2021-10-11 02:25:29,583 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:29" (1/1) ... [2021-10-11 02:25:29,616 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:29" (1/1) ... [2021-10-11 02:25:29,623 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:29" (1/1) ... [2021-10-11 02:25:29,646 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:25:29,647 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:25:29,647 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:25:29,648 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:25:29,649 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:29" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6758f07-db55-4a01-b82c-1cb3d723e7e0/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 02:25:29,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:25:29,746 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:25:29,746 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:25:29,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:25:31,945 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:25:31,945 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-11 02:25:31,949 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:25:31 BoogieIcfgContainer [2021-10-11 02:25:31,949 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:25:31,952 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:25:31,952 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:25:31,956 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:25:31,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:25:28" (1/3) ... [2021-10-11 02:25:31,957 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@455b17a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:25:31, skipping insertion in model container [2021-10-11 02:25:31,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:29" (2/3) ... [2021-10-11 02:25:31,958 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@455b17a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:25:31, skipping insertion in model container [2021-10-11 02:25:31,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:25:31" (3/3) ... [2021-10-11 02:25:31,960 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem02_label29.c [2021-10-11 02:25:31,975 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:25:31,978 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:25:31,989 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 02:25:32,030 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:25:32,031 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:25:32,031 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:25:32,031 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:25:32,031 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:25:32,031 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:25:32,031 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:25:32,031 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:25:32,048 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states. [2021-10-11 02:25:32,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-10-11 02:25:32,064 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:25:32,064 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:25:32,065 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:25:32,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:25:32,071 INFO L82 PathProgramCache]: Analyzing trace with hash 925945158, now seen corresponding path program 1 times [2021-10-11 02:25:32,081 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:25:32,082 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830955287] [2021-10-11 02:25:32,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:25:32,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:32,409 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 02:25:32,410 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830955287] [2021-10-11 02:25:32,411 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:25:32,411 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:25:32,412 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149910360] [2021-10-11 02:25:32,417 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:25:32,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:25:32,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:25:32,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:25:32,432 INFO L87 Difference]: Start difference. First operand 85 states. Second operand 3 states. [2021-10-11 02:25:32,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:25:32,906 INFO L93 Difference]: Finished difference Result 251 states and 482 transitions. [2021-10-11 02:25:32,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:25:32,909 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2021-10-11 02:25:32,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:25:32,935 INFO L225 Difference]: With dead ends: 251 [2021-10-11 02:25:32,935 INFO L226 Difference]: Without dead ends: 163 [2021-10-11 02:25:32,944 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 02:25:32,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-10-11 02:25:33,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2021-10-11 02:25:33,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2021-10-11 02:25:33,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 298 transitions. [2021-10-11 02:25:33,029 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 298 transitions. Word has length 80 [2021-10-11 02:25:33,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:25:33,030 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 298 transitions. [2021-10-11 02:25:33,030 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:25:33,030 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 298 transitions. [2021-10-11 02:25:33,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-10-11 02:25:33,034 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:25:33,034 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:25:33,035 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:25:33,035 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:25:33,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:25:33,036 INFO L82 PathProgramCache]: Analyzing trace with hash 1028665915, now seen corresponding path program 1 times [2021-10-11 02:25:33,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:25:33,036 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678186158] [2021-10-11 02:25:33,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:25:33,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:33,158 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:25:33,159 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678186158] [2021-10-11 02:25:33,159 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:25:33,159 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:25:33,159 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196591557] [2021-10-11 02:25:33,161 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:25:33,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:25:33,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:25:33,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:25:33,162 INFO L87 Difference]: Start difference. First operand 163 states and 298 transitions. Second operand 3 states. [2021-10-11 02:25:33,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:25:33,611 INFO L93 Difference]: Finished difference Result 485 states and 891 transitions. [2021-10-11 02:25:33,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:25:33,611 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 84 [2021-10-11 02:25:33,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:25:33,614 INFO L225 Difference]: With dead ends: 485 [2021-10-11 02:25:33,614 INFO L226 Difference]: Without dead ends: 323 [2021-10-11 02:25:33,616 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 02:25:33,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2021-10-11 02:25:33,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2021-10-11 02:25:33,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2021-10-11 02:25:33,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 488 transitions. [2021-10-11 02:25:33,632 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 488 transitions. Word has length 84 [2021-10-11 02:25:33,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:25:33,633 INFO L481 AbstractCegarLoop]: Abstraction has 323 states and 488 transitions. [2021-10-11 02:25:33,633 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:25:33,633 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 488 transitions. [2021-10-11 02:25:33,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-10-11 02:25:33,638 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:25:33,639 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:25:33,639 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:25:33,639 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:25:33,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:25:33,640 INFO L82 PathProgramCache]: Analyzing trace with hash 2137915796, now seen corresponding path program 1 times [2021-10-11 02:25:33,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:25:33,640 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232443991] [2021-10-11 02:25:33,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:25:33,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:33,712 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:25:33,712 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232443991] [2021-10-11 02:25:33,713 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [261836684] [2021-10-11 02:25:33,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6758f07-db55-4a01-b82c-1cb3d723e7e0/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 02:25:33,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:33,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:25:33,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:25:34,023 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-11 02:25:34,024 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:25:34,145 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-11 02:25:34,152 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:25:34,152 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [3] total 4 [2021-10-11 02:25:34,153 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012850125] [2021-10-11 02:25:34,155 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:25:34,155 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:25:34,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:25:34,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:25:34,156 INFO L87 Difference]: Start difference. First operand 323 states and 488 transitions. Second operand 3 states. [2021-10-11 02:25:34,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:25:34,638 INFO L93 Difference]: Finished difference Result 565 states and 880 transitions. [2021-10-11 02:25:34,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:25:34,639 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 89 [2021-10-11 02:25:34,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:25:34,645 INFO L225 Difference]: With dead ends: 565 [2021-10-11 02:25:34,645 INFO L226 Difference]: Without dead ends: 563 [2021-10-11 02:25:34,647 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 175 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 02:25:34,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2021-10-11 02:25:34,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 403. [2021-10-11 02:25:34,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2021-10-11 02:25:34,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 643 transitions. [2021-10-11 02:25:34,669 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 643 transitions. Word has length 89 [2021-10-11 02:25:34,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:25:34,670 INFO L481 AbstractCegarLoop]: Abstraction has 403 states and 643 transitions. [2021-10-11 02:25:34,670 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:25:34,670 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 643 transitions. [2021-10-11 02:25:34,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-10-11 02:25:34,673 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:25:34,673 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:25:34,899 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-10-11 02:25:34,899 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:25:34,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:25:34,900 INFO L82 PathProgramCache]: Analyzing trace with hash -1427752050, now seen corresponding path program 1 times [2021-10-11 02:25:34,900 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:25:34,900 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015576764] [2021-10-11 02:25:34,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:25:34,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:34,986 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:25:34,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015576764] [2021-10-11 02:25:34,987 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:25:34,987 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:25:34,988 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036097337] [2021-10-11 02:25:34,989 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:25:34,989 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:25:34,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:25:34,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:25:34,990 INFO L87 Difference]: Start difference. First operand 403 states and 643 transitions. Second operand 3 states. [2021-10-11 02:25:35,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:25:35,216 INFO L93 Difference]: Finished difference Result 805 states and 1285 transitions. [2021-10-11 02:25:35,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:25:35,217 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 91 [2021-10-11 02:25:35,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:25:35,219 INFO L225 Difference]: With dead ends: 805 [2021-10-11 02:25:35,219 INFO L226 Difference]: Without dead ends: 403 [2021-10-11 02:25:35,221 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 02:25:35,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2021-10-11 02:25:35,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 403. [2021-10-11 02:25:35,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2021-10-11 02:25:35,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 588 transitions. [2021-10-11 02:25:35,233 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 588 transitions. Word has length 91 [2021-10-11 02:25:35,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:25:35,234 INFO L481 AbstractCegarLoop]: Abstraction has 403 states and 588 transitions. [2021-10-11 02:25:35,234 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:25:35,234 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 588 transitions. [2021-10-11 02:25:35,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-10-11 02:25:35,235 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:25:35,236 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:25:35,236 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 02:25:35,236 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:25:35,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:25:35,237 INFO L82 PathProgramCache]: Analyzing trace with hash -440309102, now seen corresponding path program 1 times [2021-10-11 02:25:35,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:25:35,237 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93446400] [2021-10-11 02:25:35,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:25:35,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:35,336 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-11 02:25:35,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93446400] [2021-10-11 02:25:35,337 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:25:35,337 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:25:35,337 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719382769] [2021-10-11 02:25:35,337 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:25:35,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:25:35,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:25:35,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:25:35,338 INFO L87 Difference]: Start difference. First operand 403 states and 588 transitions. Second operand 3 states. [2021-10-11 02:25:35,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:25:35,733 INFO L93 Difference]: Finished difference Result 885 states and 1350 transitions. [2021-10-11 02:25:35,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:25:35,734 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 111 [2021-10-11 02:25:35,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:25:35,738 INFO L225 Difference]: With dead ends: 885 [2021-10-11 02:25:35,738 INFO L226 Difference]: Without dead ends: 563 [2021-10-11 02:25:35,739 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 02:25:35,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2021-10-11 02:25:35,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 563. [2021-10-11 02:25:35,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 563 states. [2021-10-11 02:25:35,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 798 transitions. [2021-10-11 02:25:35,756 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 798 transitions. Word has length 111 [2021-10-11 02:25:35,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:25:35,757 INFO L481 AbstractCegarLoop]: Abstraction has 563 states and 798 transitions. [2021-10-11 02:25:35,757 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:25:35,758 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 798 transitions. [2021-10-11 02:25:35,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-10-11 02:25:35,760 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:25:35,760 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-10-11 02:25:35,760 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-11 02:25:35,760 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:25:35,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:25:35,761 INFO L82 PathProgramCache]: Analyzing trace with hash -1423427802, now seen corresponding path program 1 times [2021-10-11 02:25:35,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:25:35,761 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176024971] [2021-10-11 02:25:35,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:25:35,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:35,868 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-10-11 02:25:35,871 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176024971] [2021-10-11 02:25:35,871 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1548945815] [2021-10-11 02:25:35,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6758f07-db55-4a01-b82c-1cb3d723e7e0/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 02:25:36,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:36,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:25:36,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:25:36,165 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-11 02:25:36,166 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:25:36,305 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-11 02:25:36,306 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:25:36,306 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3] total 5 [2021-10-11 02:25:36,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173291373] [2021-10-11 02:25:36,307 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:25:36,307 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:25:36,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:25:36,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:25:36,308 INFO L87 Difference]: Start difference. First operand 563 states and 798 transitions. Second operand 3 states. [2021-10-11 02:25:36,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:25:36,757 INFO L93 Difference]: Finished difference Result 1365 states and 1995 transitions. [2021-10-11 02:25:36,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:25:36,757 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 133 [2021-10-11 02:25:36,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:25:36,762 INFO L225 Difference]: With dead ends: 1365 [2021-10-11 02:25:36,762 INFO L226 Difference]: Without dead ends: 883 [2021-10-11 02:25:36,763 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 263 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 02:25:36,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 883 states. [2021-10-11 02:25:36,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 883 to 883. [2021-10-11 02:25:36,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 883 states. [2021-10-11 02:25:36,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 1183 transitions. [2021-10-11 02:25:36,806 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 1183 transitions. Word has length 133 [2021-10-11 02:25:36,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:25:36,806 INFO L481 AbstractCegarLoop]: Abstraction has 883 states and 1183 transitions. [2021-10-11 02:25:36,806 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:25:36,806 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 1183 transitions. [2021-10-11 02:25:36,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-10-11 02:25:36,816 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:25:36,816 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:25:37,045 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:25:37,046 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:25:37,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:25:37,046 INFO L82 PathProgramCache]: Analyzing trace with hash -1142814144, now seen corresponding path program 1 times [2021-10-11 02:25:37,046 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:25:37,046 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645295000] [2021-10-11 02:25:37,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:25:37,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:37,149 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-10-11 02:25:37,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645295000] [2021-10-11 02:25:37,149 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:25:37,150 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:25:37,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853626209] [2021-10-11 02:25:37,150 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:25:37,151 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:25:37,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:25:37,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:25:37,152 INFO L87 Difference]: Start difference. First operand 883 states and 1183 transitions. Second operand 3 states. [2021-10-11 02:25:37,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:25:37,507 INFO L93 Difference]: Finished difference Result 1765 states and 2375 transitions. [2021-10-11 02:25:37,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:25:37,508 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 135 [2021-10-11 02:25:37,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:25:37,513 INFO L225 Difference]: With dead ends: 1765 [2021-10-11 02:25:37,514 INFO L226 Difference]: Without dead ends: 803 [2021-10-11 02:25:37,515 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 02:25:37,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2021-10-11 02:25:37,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 803. [2021-10-11 02:25:37,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 803 states. [2021-10-11 02:25:37,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 955 transitions. [2021-10-11 02:25:37,538 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 955 transitions. Word has length 135 [2021-10-11 02:25:37,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:25:37,538 INFO L481 AbstractCegarLoop]: Abstraction has 803 states and 955 transitions. [2021-10-11 02:25:37,538 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:25:37,539 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 955 transitions. [2021-10-11 02:25:37,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-10-11 02:25:37,541 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:25:37,542 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:25:37,542 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-11 02:25:37,542 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:25:37,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:25:37,543 INFO L82 PathProgramCache]: Analyzing trace with hash 2089841674, now seen corresponding path program 1 times [2021-10-11 02:25:37,543 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:25:37,543 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773613848] [2021-10-11 02:25:37,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:25:37,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:37,622 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-10-11 02:25:37,623 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773613848] [2021-10-11 02:25:37,623 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:25:37,623 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:25:37,623 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697695189] [2021-10-11 02:25:37,624 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:25:37,624 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:25:37,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:25:37,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:25:37,631 INFO L87 Difference]: Start difference. First operand 803 states and 955 transitions. Second operand 3 states. [2021-10-11 02:25:37,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:25:37,946 INFO L93 Difference]: Finished difference Result 1525 states and 1825 transitions. [2021-10-11 02:25:37,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:25:37,947 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 139 [2021-10-11 02:25:37,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:25:37,964 INFO L225 Difference]: With dead ends: 1525 [2021-10-11 02:25:37,965 INFO L226 Difference]: Without dead ends: 723 [2021-10-11 02:25:37,966 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 02:25:37,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2021-10-11 02:25:37,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 723. [2021-10-11 02:25:37,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 723 states. [2021-10-11 02:25:37,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 823 transitions. [2021-10-11 02:25:37,983 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 823 transitions. Word has length 139 [2021-10-11 02:25:37,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:25:37,984 INFO L481 AbstractCegarLoop]: Abstraction has 723 states and 823 transitions. [2021-10-11 02:25:37,984 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:25:37,984 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 823 transitions. [2021-10-11 02:25:37,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-10-11 02:25:37,987 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:25:37,987 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:25:37,988 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-11 02:25:37,988 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:25:37,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:25:37,988 INFO L82 PathProgramCache]: Analyzing trace with hash -1296466181, now seen corresponding path program 1 times [2021-10-11 02:25:37,989 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:25:37,989 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263522102] [2021-10-11 02:25:37,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:25:38,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:38,326 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 68 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:25:38,326 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263522102] [2021-10-11 02:25:38,327 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [633468955] [2021-10-11 02:25:38,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6758f07-db55-4a01-b82c-1cb3d723e7e0/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 02:25:38,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:38,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:25:38,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:25:38,677 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-10-11 02:25:38,678 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:25:38,853 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-10-11 02:25:38,854 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:25:38,854 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 7 [2021-10-11 02:25:38,854 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200873399] [2021-10-11 02:25:38,855 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:25:38,855 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:25:38,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:25:38,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:25:38,857 INFO L87 Difference]: Start difference. First operand 723 states and 823 transitions. Second operand 4 states. [2021-10-11 02:25:39,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:25:39,450 INFO L93 Difference]: Finished difference Result 1683 states and 1942 transitions. [2021-10-11 02:25:39,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:25:39,451 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 178 [2021-10-11 02:25:39,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:25:39,451 INFO L225 Difference]: With dead ends: 1683 [2021-10-11 02:25:39,452 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:25:39,453 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 353 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:25:39,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:25:39,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:25:39,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:25:39,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:25:39,454 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 178 [2021-10-11 02:25:39,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:25:39,455 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:25:39,455 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:25:39,455 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:25:39,455 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:25:39,679 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:25:39,681 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 02:25:39,864 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 28 [2021-10-11 02:25:40,009 WARN L197 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 28 [2021-10-11 02:25:40,012 INFO L262 CegarLoopResult]: For program point L301(lines 301 423) no Hoare annotation was computed. [2021-10-11 02:25:40,014 INFO L262 CegarLoopResult]: For program point L235(lines 235 423) no Hoare annotation was computed. [2021-10-11 02:25:40,014 INFO L262 CegarLoopResult]: For program point L169(lines 169 423) no Hoare annotation was computed. [2021-10-11 02:25:40,014 INFO L262 CegarLoopResult]: For program point L303(lines 303 423) no Hoare annotation was computed. [2021-10-11 02:25:40,014 INFO L262 CegarLoopResult]: For program point L105(lines 105 423) no Hoare annotation was computed. [2021-10-11 02:25:40,014 INFO L262 CegarLoopResult]: For program point L40(lines 40 423) no Hoare annotation was computed. [2021-10-11 02:25:40,015 INFO L262 CegarLoopResult]: For program point L371(lines 371 423) no Hoare annotation was computed. [2021-10-11 02:25:40,015 INFO L262 CegarLoopResult]: For program point L307(lines 307 423) no Hoare annotation was computed. [2021-10-11 02:25:40,015 INFO L262 CegarLoopResult]: For program point L175(lines 175 423) no Hoare annotation was computed. [2021-10-11 02:25:40,015 INFO L262 CegarLoopResult]: For program point L109(lines 109 423) no Hoare annotation was computed. [2021-10-11 02:25:40,015 INFO L262 CegarLoopResult]: For program point L242(lines 242 423) no Hoare annotation was computed. [2021-10-11 02:25:40,015 INFO L262 CegarLoopResult]: For program point L45(lines 45 423) no Hoare annotation was computed. [2021-10-11 02:25:40,015 INFO L262 CegarLoopResult]: For program point L244(lines 244 423) no Hoare annotation was computed. [2021-10-11 02:25:40,016 INFO L262 CegarLoopResult]: For program point L179(lines 179 423) no Hoare annotation was computed. [2021-10-11 02:25:40,016 INFO L262 CegarLoopResult]: For program point L378(lines 378 423) no Hoare annotation was computed. [2021-10-11 02:25:40,016 INFO L262 CegarLoopResult]: For program point L48(lines 48 423) no Hoare annotation was computed. [2021-10-11 02:25:40,016 INFO L262 CegarLoopResult]: For program point L247(lines 247 423) no Hoare annotation was computed. [2021-10-11 02:25:40,017 INFO L262 CegarLoopResult]: For program point L116(lines 116 423) no Hoare annotation was computed. [2021-10-11 02:25:40,017 INFO L262 CegarLoopResult]: For program point L52(lines 52 423) no Hoare annotation was computed. [2021-10-11 02:25:40,017 INFO L262 CegarLoopResult]: For program point L185(lines 185 423) no Hoare annotation was computed. [2021-10-11 02:25:40,017 INFO L262 CegarLoopResult]: For program point L385(lines 385 423) no Hoare annotation was computed. [2021-10-11 02:25:40,017 INFO L262 CegarLoopResult]: For program point L319(lines 319 423) no Hoare annotation was computed. [2021-10-11 02:25:40,017 INFO L262 CegarLoopResult]: For program point L189(lines 189 423) no Hoare annotation was computed. [2021-10-11 02:25:40,017 INFO L262 CegarLoopResult]: For program point L123(lines 123 423) no Hoare annotation was computed. [2021-10-11 02:25:40,017 INFO L262 CegarLoopResult]: For program point L57(lines 57 423) no Hoare annotation was computed. [2021-10-11 02:25:40,018 INFO L262 CegarLoopResult]: For program point L388(lines 388 423) no Hoare annotation was computed. [2021-10-11 02:25:40,018 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 02:25:40,018 INFO L262 CegarLoopResult]: For program point L390(lines 390 423) no Hoare annotation was computed. [2021-10-11 02:25:40,018 INFO L262 CegarLoopResult]: For program point L324(lines 324 423) no Hoare annotation was computed. [2021-10-11 02:25:40,019 INFO L262 CegarLoopResult]: For program point L258(lines 258 423) no Hoare annotation was computed. [2021-10-11 02:25:40,019 INFO L262 CegarLoopResult]: For program point L60(lines 60 423) no Hoare annotation was computed. [2021-10-11 02:25:40,019 INFO L262 CegarLoopResult]: For program point L195(lines 195 423) no Hoare annotation was computed. [2021-10-11 02:25:40,019 INFO L262 CegarLoopResult]: For program point L129(lines 129 423) no Hoare annotation was computed. [2021-10-11 02:25:40,019 INFO L262 CegarLoopResult]: For program point L64(lines 64 423) no Hoare annotation was computed. [2021-10-11 02:25:40,019 INFO L262 CegarLoopResult]: For program point L263(lines 263 423) no Hoare annotation was computed. [2021-10-11 02:25:40,019 INFO L262 CegarLoopResult]: For program point L197(lines 197 423) no Hoare annotation was computed. [2021-10-11 02:25:40,020 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 488) no Hoare annotation was computed. [2021-10-11 02:25:40,020 INFO L262 CegarLoopResult]: For program point L199(lines 199 423) no Hoare annotation was computed. [2021-10-11 02:25:40,020 INFO L262 CegarLoopResult]: For program point L133(lines 133 423) no Hoare annotation was computed. [2021-10-11 02:25:40,020 INFO L262 CegarLoopResult]: For program point L399(lines 399 423) no Hoare annotation was computed. [2021-10-11 02:25:40,020 INFO L262 CegarLoopResult]: For program point L201(lines 201 423) no Hoare annotation was computed. [2021-10-11 02:25:40,020 INFO L262 CegarLoopResult]: For program point L69(lines 69 423) no Hoare annotation was computed. [2021-10-11 02:25:40,020 INFO L262 CegarLoopResult]: For program point L269(lines 269 423) no Hoare annotation was computed. [2021-10-11 02:25:40,020 INFO L262 CegarLoopResult]: For program point L204(lines 204 423) no Hoare annotation was computed. [2021-10-11 02:25:40,021 INFO L262 CegarLoopResult]: For program point L271(lines 271 423) no Hoare annotation was computed. [2021-10-11 02:25:40,021 INFO L262 CegarLoopResult]: For program point L404(lines 404 423) no Hoare annotation was computed. [2021-10-11 02:25:40,021 INFO L262 CegarLoopResult]: For program point L338(lines 338 423) no Hoare annotation was computed. [2021-10-11 02:25:40,021 INFO L262 CegarLoopResult]: For program point L140(lines 140 423) no Hoare annotation was computed. [2021-10-11 02:25:40,021 INFO L262 CegarLoopResult]: For program point L75(lines 75 423) no Hoare annotation was computed. [2021-10-11 02:25:40,021 INFO L262 CegarLoopResult]: For program point L208(lines 208 423) no Hoare annotation was computed. [2021-10-11 02:25:40,021 INFO L262 CegarLoopResult]: For program point L341(lines 341 423) no Hoare annotation was computed. [2021-10-11 02:25:40,022 INFO L262 CegarLoopResult]: For program point L408(lines 408 423) no Hoare annotation was computed. [2021-10-11 02:25:40,022 INFO L262 CegarLoopResult]: For program point L144(lines 144 423) no Hoare annotation was computed. [2021-10-11 02:25:40,023 INFO L258 CegarLoopResult]: At program point L607(lines 39 608) the Hoare annotation is: (let ((.cse2 (= ~a25~0 1)) (.cse4 (= ~a19~0 1)) (.cse3 (<= 8 ~a17~0)) (.cse0 (<= ~a17~0 8)) (.cse1 (<= ~a28~0 10))) (or (and (= ~a25~0 0) .cse0 .cse1) (and (<= 9 ~a28~0) .cse2 .cse0 .cse1) (and .cse3 .cse2 .cse0 .cse1) (and (= ~a25~0 ~a11~0) .cse4 .cse2 (<= ~a28~0 7) .cse0) (and .cse4 .cse3 .cse2 .cse0) (and .cse4 (<= 10 ~a28~0) .cse3 .cse0 .cse1))) [2021-10-11 02:25:40,023 INFO L262 CegarLoopResult]: For program point L79(lines 79 423) no Hoare annotation was computed. [2021-10-11 02:25:40,023 INFO L262 CegarLoopResult]: For program point L212(lines 212 423) no Hoare annotation was computed. [2021-10-11 02:25:40,023 INFO L265 CegarLoopResult]: At program point L610(lines 610 627) the Hoare annotation is: true [2021-10-11 02:25:40,023 INFO L262 CegarLoopResult]: For program point L412(lines 412 423) no Hoare annotation was computed. [2021-10-11 02:25:40,023 INFO L262 CegarLoopResult]: For program point L347(lines 347 423) no Hoare annotation was computed. [2021-10-11 02:25:40,024 INFO L262 CegarLoopResult]: For program point L149(lines 149 423) no Hoare annotation was computed. [2021-10-11 02:25:40,024 INFO L262 CegarLoopResult]: For program point L414(lines 414 423) no Hoare annotation was computed. [2021-10-11 02:25:40,024 INFO L262 CegarLoopResult]: For program point L84(lines 84 423) no Hoare annotation was computed. [2021-10-11 02:25:40,024 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 02:25:40,024 INFO L262 CegarLoopResult]: For program point L417(lines 417 423) no Hoare annotation was computed. [2021-10-11 02:25:40,024 INFO L262 CegarLoopResult]: For program point L153(lines 153 423) no Hoare annotation was computed. [2021-10-11 02:25:40,026 INFO L258 CegarLoopResult]: At program point L616-2(lines 616 626) the Hoare annotation is: (let ((.cse2 (= ~a25~0 1)) (.cse4 (= ~a19~0 1)) (.cse3 (<= 8 ~a17~0)) (.cse0 (<= ~a17~0 8)) (.cse1 (<= ~a28~0 10))) (or (and (= ~a25~0 0) .cse0 .cse1) (and (<= 9 ~a28~0) .cse2 .cse0 .cse1) (and .cse3 .cse2 .cse0 .cse1) (and (= ~a25~0 ~a11~0) .cse4 .cse2 (<= ~a28~0 7) .cse0) (and .cse4 .cse3 .cse2 .cse0) (and .cse4 (<= 10 ~a28~0) .cse3 .cse0 .cse1))) [2021-10-11 02:25:40,026 INFO L262 CegarLoopResult]: For program point L484-1(lines 39 608) no Hoare annotation was computed. [2021-10-11 02:25:40,027 INFO L262 CegarLoopResult]: For program point L286(lines 286 423) no Hoare annotation was computed. [2021-10-11 02:25:40,027 INFO L262 CegarLoopResult]: For program point L419(lines 419 423) no Hoare annotation was computed. [2021-10-11 02:25:40,027 INFO L262 CegarLoopResult]: For program point L222(lines 222 423) no Hoare annotation was computed. [2021-10-11 02:25:40,027 INFO L262 CegarLoopResult]: For program point L487-1(lines 39 608) no Hoare annotation was computed. [2021-10-11 02:25:40,028 INFO L262 CegarLoopResult]: For program point L488(line 488) no Hoare annotation was computed. [2021-10-11 02:25:40,028 INFO L262 CegarLoopResult]: For program point L290(lines 290 423) no Hoare annotation was computed. [2021-10-11 02:25:40,028 INFO L262 CegarLoopResult]: For program point L158(lines 158 423) no Hoare annotation was computed. [2021-10-11 02:25:40,028 INFO L262 CegarLoopResult]: For program point L92(lines 92 423) no Hoare annotation was computed. [2021-10-11 02:25:40,028 INFO L262 CegarLoopResult]: For program point L621(line 621) no Hoare annotation was computed. [2021-10-11 02:25:40,028 INFO L262 CegarLoopResult]: For program point L225(lines 225 423) no Hoare annotation was computed. [2021-10-11 02:25:40,028 INFO L262 CegarLoopResult]: For program point L359(lines 359 423) no Hoare annotation was computed. [2021-10-11 02:25:40,029 INFO L262 CegarLoopResult]: For program point L293(lines 293 423) no Hoare annotation was computed. [2021-10-11 02:25:40,029 INFO L262 CegarLoopResult]: For program point L228(lines 228 423) no Hoare annotation was computed. [2021-10-11 02:25:40,029 INFO L262 CegarLoopResult]: For program point L296(lines 296 423) no Hoare annotation was computed. [2021-10-11 02:25:40,029 INFO L262 CegarLoopResult]: For program point L164(lines 164 423) no Hoare annotation was computed. [2021-10-11 02:25:40,029 INFO L262 CegarLoopResult]: For program point L364(lines 364 423) no Hoare annotation was computed. [2021-10-11 02:25:40,029 INFO L262 CegarLoopResult]: For program point L233(lines 233 423) no Hoare annotation was computed. [2021-10-11 02:25:40,029 INFO L262 CegarLoopResult]: For program point L101(lines 101 423) no Hoare annotation was computed. [2021-10-11 02:25:40,074 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:25:40 BoogieIcfgContainer [2021-10-11 02:25:40,075 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:25:40,075 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:25:40,076 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:25:40,076 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:25:40,077 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:25:31" (3/4) ... [2021-10-11 02:25:40,080 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:25:40,109 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 113 nodes and edges [2021-10-11 02:25:40,111 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2021-10-11 02:25:40,113 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2021-10-11 02:25:40,114 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-11 02:25:40,310 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6758f07-db55-4a01-b82c-1cb3d723e7e0/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:25:40,310 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:25:40,312 INFO L168 Benchmark]: Toolchain (without parser) took 11592.80 ms. Allocated memory was 102.8 MB in the beginning and 348.1 MB in the end (delta: 245.4 MB). Free memory was 61.9 MB in the beginning and 216.3 MB in the end (delta: -154.4 MB). Peak memory consumption was 91.3 MB. Max. memory is 16.1 GB. [2021-10-11 02:25:40,313 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 102.8 MB. Free memory was 80.2 MB in the beginning and 80.1 MB in the end (delta: 52.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:25:40,313 INFO L168 Benchmark]: CACSL2BoogieTranslator took 715.29 ms. Allocated memory is still 102.8 MB. Free memory was 61.7 MB in the beginning and 62.8 MB in the end (delta: -1.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:25:40,314 INFO L168 Benchmark]: Boogie Procedure Inliner took 94.35 ms. Allocated memory is still 102.8 MB. Free memory was 62.8 MB in the beginning and 57.4 MB in the end (delta: 5.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:25:40,314 INFO L168 Benchmark]: Boogie Preprocessor took 115.42 ms. Allocated memory is still 102.8 MB. Free memory was 57.4 MB in the beginning and 52.9 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:25:40,315 INFO L168 Benchmark]: RCFGBuilder took 2301.73 ms. Allocated memory was 102.8 MB in the beginning and 153.1 MB in the end (delta: 50.3 MB). Free memory was 52.9 MB in the beginning and 105.7 MB in the end (delta: -52.9 MB). Peak memory consumption was 60.3 MB. Max. memory is 16.1 GB. [2021-10-11 02:25:40,315 INFO L168 Benchmark]: TraceAbstraction took 8122.62 ms. Allocated memory was 153.1 MB in the beginning and 348.1 MB in the end (delta: 195.0 MB). Free memory was 105.7 MB in the beginning and 232.0 MB in the end (delta: -126.3 MB). Peak memory consumption was 68.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:25:40,316 INFO L168 Benchmark]: Witness Printer took 235.28 ms. Allocated memory is still 348.1 MB. Free memory was 232.0 MB in the beginning and 216.3 MB in the end (delta: 15.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-10-11 02:25:40,318 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 102.8 MB. Free memory was 80.2 MB in the beginning and 80.1 MB in the end (delta: 52.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 715.29 ms. Allocated memory is still 102.8 MB. Free memory was 61.7 MB in the beginning and 62.8 MB in the end (delta: -1.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 94.35 ms. Allocated memory is still 102.8 MB. Free memory was 62.8 MB in the beginning and 57.4 MB in the end (delta: 5.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 115.42 ms. Allocated memory is still 102.8 MB. Free memory was 57.4 MB in the beginning and 52.9 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2301.73 ms. Allocated memory was 102.8 MB in the beginning and 153.1 MB in the end (delta: 50.3 MB). Free memory was 52.9 MB in the beginning and 105.7 MB in the end (delta: -52.9 MB). Peak memory consumption was 60.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 8122.62 ms. Allocated memory was 153.1 MB in the beginning and 348.1 MB in the end (delta: 195.0 MB). Free memory was 105.7 MB in the beginning and 232.0 MB in the end (delta: -126.3 MB). Peak memory consumption was 68.7 MB. Max. memory is 16.1 GB. * Witness Printer took 235.28 ms. Allocated memory is still 348.1 MB. Free memory was 232.0 MB in the beginning and 216.3 MB in the end (delta: 15.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 488]: 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: 610]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 616]: Loop Invariant Derived loop invariant: ((((((a25 == 0 && a17 <= 8) && a28 <= 10) || (((9 <= a28 && a25 == 1) && a17 <= 8) && a28 <= 10)) || (((8 <= a17 && a25 == 1) && a17 <= 8) && a28 <= 10)) || ((((a25 == a11 && a19 == 1) && a25 == 1) && a28 <= 7) && a17 <= 8)) || (((a19 == 1 && 8 <= a17) && a25 == 1) && a17 <= 8)) || ((((a19 == 1 && 10 <= a28) && 8 <= a17) && a17 <= 8) && a28 <= 10) - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: ((((((a25 == 0 && a17 <= 8) && a28 <= 10) || (((9 <= a28 && a25 == 1) && a17 <= 8) && a28 <= 10)) || (((8 <= a17 && a25 == 1) && a17 <= 8) && a28 <= 10)) || ((((a25 == a11 && a19 == 1) && a25 == 1) && a28 <= 7) && a17 <= 8)) || (((a19 == 1 && 8 <= a17) && a25 == 1) && a17 <= 8)) || ((((a19 == 1 && 10 <= a28) && 8 <= a17) && a17 <= 8) && a28 <= 10) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 7.6s, OverallIterations: 9, TraceHistogramMax: 5, AutomataDifference: 3.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 503 SDtfs, 574 SDslu, 56 SDs, 0 SdLazy, 2047 SolverSat, 487 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 818 GetRequests, 799 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=883occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 160 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 37 NumberOfFragments, 165 HoareAnnotationTreeSize, 3 FomulaSimplifications, 458 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 18 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 1440 NumberOfCodeBlocks, 1440 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 1825 ConstructedInterpolants, 0 QuantifiedInterpolants, 700483 SizeOfPredicates, 0 NumberOfNonLiveVariables, 933 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 15 InterpolantComputations, 12 PerfectInterpolantSequences, 845/909 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...