./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem02_label02.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_677d52da-d4d3-4c58-aa54-1dcf97b0803d/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_677d52da-d4d3-4c58-aa54-1dcf97b0803d/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_677d52da-d4d3-4c58-aa54-1dcf97b0803d/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_677d52da-d4d3-4c58-aa54-1dcf97b0803d/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem02_label02.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_677d52da-d4d3-4c58-aa54-1dcf97b0803d/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_677d52da-d4d3-4c58-aa54-1dcf97b0803d/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 203014188672df6ecb5502efd1e8042fd4aedfd2 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 02:25:31,326 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:25:31,328 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:25:31,373 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:25:31,374 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:25:31,376 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:25:31,377 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:25:31,380 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:25:31,382 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:25:31,384 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:25:31,385 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:25:31,387 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:25:31,387 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:25:31,388 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:25:31,390 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:25:31,391 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:25:31,393 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:25:31,399 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:25:31,401 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:25:31,406 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:25:31,411 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:25:31,414 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:25:31,419 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:25:31,420 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:25:31,428 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:25:31,432 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:25:31,433 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:25:31,434 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:25:31,436 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:25:31,439 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:25:31,439 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:25:31,440 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:25:31,442 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:25:31,443 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:25:31,445 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:25:31,446 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:25:31,447 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:25:31,447 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:25:31,447 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:25:31,448 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:25:31,449 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:25:31,452 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_677d52da-d4d3-4c58-aa54-1dcf97b0803d/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:25:31,496 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:25:31,496 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:25:31,498 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:25:31,498 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:25:31,498 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:25:31,499 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:25:31,499 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:25:31,499 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:25:31,505 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:25:31,505 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:25:31,507 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:25:31,507 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:25:31,507 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:25:31,507 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:25:31,508 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:25:31,508 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:25:31,509 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:25:31,509 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:25:31,509 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:25:31,509 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:25:31,509 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:25:31,510 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:25:31,510 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:25:31,510 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:25:31,510 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:25:31,511 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:25:31,511 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:25:31,511 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:25:31,511 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:25:31,513 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:25:31,514 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:25:31,514 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:25:31,514 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:25:31,514 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:25:31,515 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:25:31,515 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:25:31,515 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:25:31,515 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:25:31,515 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:25:31,516 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_677d52da-d4d3-4c58-aa54-1dcf97b0803d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_677d52da-d4d3-4c58-aa54-1dcf97b0803d/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 203014188672df6ecb5502efd1e8042fd4aedfd2 [2021-10-11 02:25:31,785 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:25:31,813 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:25:31,816 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:25:31,817 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:25:31,818 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:25:31,819 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_677d52da-d4d3-4c58-aa54-1dcf97b0803d/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/eca-rers2012/Problem02_label02.c [2021-10-11 02:25:31,886 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_677d52da-d4d3-4c58-aa54-1dcf97b0803d/bin/utaipan-WLngWcDbfI/data/81e4534a5/4e9cfd67fc204f3598f3e21a723c827e/FLAG6068e0184 [2021-10-11 02:25:32,483 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:25:32,484 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_677d52da-d4d3-4c58-aa54-1dcf97b0803d/sv-benchmarks/c/eca-rers2012/Problem02_label02.c [2021-10-11 02:25:32,496 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_677d52da-d4d3-4c58-aa54-1dcf97b0803d/bin/utaipan-WLngWcDbfI/data/81e4534a5/4e9cfd67fc204f3598f3e21a723c827e/FLAG6068e0184 [2021-10-11 02:25:32,735 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_677d52da-d4d3-4c58-aa54-1dcf97b0803d/bin/utaipan-WLngWcDbfI/data/81e4534a5/4e9cfd67fc204f3598f3e21a723c827e [2021-10-11 02:25:32,737 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:25:32,741 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:25:32,748 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:25:32,748 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:25:32,751 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:25:32,752 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:25:32" (1/1) ... [2021-10-11 02:25:32,754 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7644bc11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:32, skipping insertion in model container [2021-10-11 02:25:32,755 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:25:32" (1/1) ... [2021-10-11 02:25:32,763 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:25:32,828 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:25:33,195 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_677d52da-d4d3-4c58-aa54-1dcf97b0803d/sv-benchmarks/c/eca-rers2012/Problem02_label02.c[15989,16002] [2021-10-11 02:25:33,232 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:25:33,251 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:25:33,362 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_677d52da-d4d3-4c58-aa54-1dcf97b0803d/sv-benchmarks/c/eca-rers2012/Problem02_label02.c[15989,16002] [2021-10-11 02:25:33,399 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:25:33,415 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:25:33,416 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:33 WrapperNode [2021-10-11 02:25:33,416 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:25:33,417 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:25:33,418 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:25:33,418 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:25:33,427 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:33" (1/1) ... [2021-10-11 02:25:33,450 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:33" (1/1) ... [2021-10-11 02:25:33,514 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:25:33,522 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:25:33,522 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:25:33,522 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:25:33,530 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:33" (1/1) ... [2021-10-11 02:25:33,531 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:33" (1/1) ... [2021-10-11 02:25:33,536 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:33" (1/1) ... [2021-10-11 02:25:33,537 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:33" (1/1) ... [2021-10-11 02:25:33,559 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:33" (1/1) ... [2021-10-11 02:25:33,570 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:33" (1/1) ... [2021-10-11 02:25:33,578 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:33" (1/1) ... [2021-10-11 02:25:33,587 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:25:33,603 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:25:33,603 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:25:33,603 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:25:33,604 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:33" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_677d52da-d4d3-4c58-aa54-1dcf97b0803d/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 02:25:33,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:25:33,710 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:25:33,710 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:25:33,710 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:25:36,288 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:25:36,289 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-11 02:25:36,294 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:25:36 BoogieIcfgContainer [2021-10-11 02:25:36,295 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:25:36,297 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:25:36,298 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:25:36,301 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:25:36,305 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:25:32" (1/3) ... [2021-10-11 02:25:36,306 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a3eac6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:25:36, skipping insertion in model container [2021-10-11 02:25:36,306 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:33" (2/3) ... [2021-10-11 02:25:36,307 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a3eac6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:25:36, skipping insertion in model container [2021-10-11 02:25:36,307 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:25:36" (3/3) ... [2021-10-11 02:25:36,309 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem02_label02.c [2021-10-11 02:25:36,324 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:25:36,328 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:25:36,344 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 02:25:36,385 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:25:36,386 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:25:36,386 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:25:36,386 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:25:36,386 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:25:36,386 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:25:36,387 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:25:36,387 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:25:36,406 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states. [2021-10-11 02:25:36,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-10-11 02:25:36,417 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:25:36,417 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 02:25:36,418 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:25:36,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:25:36,423 INFO L82 PathProgramCache]: Analyzing trace with hash 925942854, now seen corresponding path program 1 times [2021-10-11 02:25:36,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:25:36,433 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991540866] [2021-10-11 02:25:36,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:25:36,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:36,890 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 02:25:36,891 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991540866] [2021-10-11 02:25:36,892 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:25:36,892 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:25:36,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495342583] [2021-10-11 02:25:36,899 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:25:36,899 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:25:36,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:25:36,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:25:36,917 INFO L87 Difference]: Start difference. First operand 85 states. Second operand 3 states. [2021-10-11 02:25:37,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:25:37,600 INFO L93 Difference]: Finished difference Result 251 states and 482 transitions. [2021-10-11 02:25:37,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:25:37,602 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2021-10-11 02:25:37,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:25:37,633 INFO L225 Difference]: With dead ends: 251 [2021-10-11 02:25:37,634 INFO L226 Difference]: Without dead ends: 163 [2021-10-11 02:25:37,638 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 02:25:37,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-10-11 02:25:37,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2021-10-11 02:25:37,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2021-10-11 02:25:37,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 313 transitions. [2021-10-11 02:25:37,692 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 313 transitions. Word has length 80 [2021-10-11 02:25:37,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:25:37,692 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 313 transitions. [2021-10-11 02:25:37,693 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:25:37,693 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 313 transitions. [2021-10-11 02:25:37,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-10-11 02:25:37,697 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:25:37,697 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 02:25:37,698 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:25:37,698 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:25:37,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:25:37,699 INFO L82 PathProgramCache]: Analyzing trace with hash -1427754354, now seen corresponding path program 1 times [2021-10-11 02:25:37,699 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:25:37,699 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409324051] [2021-10-11 02:25:37,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:25:37,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:37,771 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 02:25:37,772 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409324051] [2021-10-11 02:25:37,772 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:25:37,772 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:25:37,772 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179291020] [2021-10-11 02:25:37,774 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:25:37,774 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:25:37,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:25:37,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:25:37,775 INFO L87 Difference]: Start difference. First operand 163 states and 313 transitions. Second operand 3 states. [2021-10-11 02:25:38,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:25:38,038 INFO L93 Difference]: Finished difference Result 325 states and 625 transitions. [2021-10-11 02:25:38,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:25:38,038 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 91 [2021-10-11 02:25:38,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:25:38,040 INFO L225 Difference]: With dead ends: 325 [2021-10-11 02:25:38,041 INFO L226 Difference]: Without dead ends: 163 [2021-10-11 02:25:38,042 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 02:25:38,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-10-11 02:25:38,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2021-10-11 02:25:38,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2021-10-11 02:25:38,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 283 transitions. [2021-10-11 02:25:38,058 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 283 transitions. Word has length 91 [2021-10-11 02:25:38,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:25:38,059 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 283 transitions. [2021-10-11 02:25:38,059 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:25:38,059 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 283 transitions. [2021-10-11 02:25:38,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-10-11 02:25:38,063 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:25:38,064 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:25:38,064 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:25:38,064 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:25:38,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:25:38,065 INFO L82 PathProgramCache]: Analyzing trace with hash 221743333, now seen corresponding path program 1 times [2021-10-11 02:25:38,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:25:38,065 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168046235] [2021-10-11 02:25:38,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:25:38,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:38,155 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:25:38,155 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168046235] [2021-10-11 02:25:38,156 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:25:38,156 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:25:38,156 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871194976] [2021-10-11 02:25:38,157 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:25:38,157 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:25:38,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:25:38,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:25:38,158 INFO L87 Difference]: Start difference. First operand 163 states and 283 transitions. Second operand 3 states. [2021-10-11 02:25:38,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:25:38,562 INFO L93 Difference]: Finished difference Result 485 states and 846 transitions. [2021-10-11 02:25:38,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:25:38,563 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 98 [2021-10-11 02:25:38,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:25:38,565 INFO L225 Difference]: With dead ends: 485 [2021-10-11 02:25:38,565 INFO L226 Difference]: Without dead ends: 323 [2021-10-11 02:25:38,566 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 02:25:38,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2021-10-11 02:25:38,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 243. [2021-10-11 02:25:38,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2021-10-11 02:25:38,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 373 transitions. [2021-10-11 02:25:38,582 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 373 transitions. Word has length 98 [2021-10-11 02:25:38,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:25:38,583 INFO L481 AbstractCegarLoop]: Abstraction has 243 states and 373 transitions. [2021-10-11 02:25:38,583 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:25:38,583 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 373 transitions. [2021-10-11 02:25:38,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-10-11 02:25:38,586 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:25:38,586 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:25:38,587 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 02:25:38,587 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:25:38,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:25:38,587 INFO L82 PathProgramCache]: Analyzing trace with hash -2134439810, now seen corresponding path program 1 times [2021-10-11 02:25:38,588 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:25:38,588 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069191814] [2021-10-11 02:25:38,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:25:38,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:38,650 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:25:38,651 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069191814] [2021-10-11 02:25:38,651 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:25:38,651 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:25:38,651 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104156767] [2021-10-11 02:25:38,652 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:25:38,652 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:25:38,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:25:38,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:25:38,653 INFO L87 Difference]: Start difference. First operand 243 states and 373 transitions. Second operand 3 states. [2021-10-11 02:25:39,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:25:39,078 INFO L93 Difference]: Finished difference Result 565 states and 885 transitions. [2021-10-11 02:25:39,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:25:39,078 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 103 [2021-10-11 02:25:39,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:25:39,081 INFO L225 Difference]: With dead ends: 565 [2021-10-11 02:25:39,081 INFO L226 Difference]: Without dead ends: 323 [2021-10-11 02:25:39,083 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 02:25:39,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2021-10-11 02:25:39,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2021-10-11 02:25:39,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2021-10-11 02:25:39,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 493 transitions. [2021-10-11 02:25:39,099 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 493 transitions. Word has length 103 [2021-10-11 02:25:39,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:25:39,099 INFO L481 AbstractCegarLoop]: Abstraction has 323 states and 493 transitions. [2021-10-11 02:25:39,099 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:25:39,099 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 493 transitions. [2021-10-11 02:25:39,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-10-11 02:25:39,105 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:25:39,106 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:25:39,106 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 02:25:39,106 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:25:39,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:25:39,107 INFO L82 PathProgramCache]: Analyzing trace with hash -2118182328, now seen corresponding path program 1 times [2021-10-11 02:25:39,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:25:39,108 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759688598] [2021-10-11 02:25:39,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:25:39,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:39,409 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 18 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:25:39,409 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759688598] [2021-10-11 02:25:39,410 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1411984737] [2021-10-11 02:25:39,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_677d52da-d4d3-4c58-aa54-1dcf97b0803d/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 02:25:39,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:39,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:25:39,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:25:39,774 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-10-11 02:25:39,778 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:25:39,912 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-10-11 02:25:39,914 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:25:39,914 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2021-10-11 02:25:39,915 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110398891] [2021-10-11 02:25:39,917 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:25:39,918 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:25:39,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:25:39,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:25:39,921 INFO L87 Difference]: Start difference. First operand 323 states and 493 transitions. Second operand 3 states. [2021-10-11 02:25:40,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:25:40,463 INFO L93 Difference]: Finished difference Result 885 states and 1336 transitions. [2021-10-11 02:25:40,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:25:40,464 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 107 [2021-10-11 02:25:40,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:25:40,468 INFO L225 Difference]: With dead ends: 885 [2021-10-11 02:25:40,483 INFO L226 Difference]: Without dead ends: 563 [2021-10-11 02:25:40,484 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 211 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:25:40,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2021-10-11 02:25:40,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 483. [2021-10-11 02:25:40,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 483 states. [2021-10-11 02:25:40,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 683 transitions. [2021-10-11 02:25:40,509 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 683 transitions. Word has length 107 [2021-10-11 02:25:40,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:25:40,513 INFO L481 AbstractCegarLoop]: Abstraction has 483 states and 683 transitions. [2021-10-11 02:25:40,513 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:25:40,513 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 683 transitions. [2021-10-11 02:25:40,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-10-11 02:25:40,518 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:25:40,519 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 02:25:40,744 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:25:40,745 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:25:40,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:25:40,746 INFO L82 PathProgramCache]: Analyzing trace with hash -440311406, now seen corresponding path program 1 times [2021-10-11 02:25:40,746 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:25:40,746 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883437839] [2021-10-11 02:25:40,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:25:40,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:40,807 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 02:25:40,808 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883437839] [2021-10-11 02:25:40,808 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:25:40,808 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:25:40,809 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317380953] [2021-10-11 02:25:40,809 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:25:40,809 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:25:40,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:25:40,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:25:40,811 INFO L87 Difference]: Start difference. First operand 483 states and 683 transitions. Second operand 3 states. [2021-10-11 02:25:41,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:25:41,235 INFO L93 Difference]: Finished difference Result 1205 states and 1716 transitions. [2021-10-11 02:25:41,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:25:41,235 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 111 [2021-10-11 02:25:41,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:25:41,240 INFO L225 Difference]: With dead ends: 1205 [2021-10-11 02:25:41,241 INFO L226 Difference]: Without dead ends: 723 [2021-10-11 02:25:41,242 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 02:25:41,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2021-10-11 02:25:41,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 723. [2021-10-11 02:25:41,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 723 states. [2021-10-11 02:25:41,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 954 transitions. [2021-10-11 02:25:41,264 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 954 transitions. Word has length 111 [2021-10-11 02:25:41,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:25:41,265 INFO L481 AbstractCegarLoop]: Abstraction has 723 states and 954 transitions. [2021-10-11 02:25:41,265 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:25:41,265 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 954 transitions. [2021-10-11 02:25:41,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-10-11 02:25:41,268 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:25:41,268 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:25:41,268 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-11 02:25:41,269 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:25:41,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:25:41,269 INFO L82 PathProgramCache]: Analyzing trace with hash 964810801, now seen corresponding path program 1 times [2021-10-11 02:25:41,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:25:41,270 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476411576] [2021-10-11 02:25:41,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:25:41,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:41,366 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-10-11 02:25:41,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476411576] [2021-10-11 02:25:41,367 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:25:41,367 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:25:41,367 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418570073] [2021-10-11 02:25:41,368 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:25:41,368 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:25:41,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:25:41,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:25:41,369 INFO L87 Difference]: Start difference. First operand 723 states and 954 transitions. Second operand 3 states. [2021-10-11 02:25:41,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:25:41,783 INFO L93 Difference]: Finished difference Result 1605 states and 2097 transitions. [2021-10-11 02:25:41,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:25:41,784 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 171 [2021-10-11 02:25:41,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:25:41,788 INFO L225 Difference]: With dead ends: 1605 [2021-10-11 02:25:41,788 INFO L226 Difference]: Without dead ends: 723 [2021-10-11 02:25:41,789 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 02:25:41,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2021-10-11 02:25:41,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 643. [2021-10-11 02:25:41,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 643 states. [2021-10-11 02:25:41,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 784 transitions. [2021-10-11 02:25:41,818 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 784 transitions. Word has length 171 [2021-10-11 02:25:41,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:25:41,818 INFO L481 AbstractCegarLoop]: Abstraction has 643 states and 784 transitions. [2021-10-11 02:25:41,818 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:25:41,818 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 784 transitions. [2021-10-11 02:25:41,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2021-10-11 02:25:41,821 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:25:41,822 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:25:41,822 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-11 02:25:41,822 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:25:41,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:25:41,823 INFO L82 PathProgramCache]: Analyzing trace with hash -1743256502, now seen corresponding path program 1 times [2021-10-11 02:25:41,823 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:25:41,823 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929321243] [2021-10-11 02:25:41,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:25:41,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:41,900 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-10-11 02:25:41,900 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929321243] [2021-10-11 02:25:41,901 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:25:41,901 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:25:41,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345077920] [2021-10-11 02:25:41,902 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:25:41,902 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:25:41,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:25:41,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:25:41,903 INFO L87 Difference]: Start difference. First operand 643 states and 784 transitions. Second operand 3 states. [2021-10-11 02:25:42,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:25:42,297 INFO L93 Difference]: Finished difference Result 1605 states and 1979 transitions. [2021-10-11 02:25:42,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:25:42,297 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 181 [2021-10-11 02:25:42,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:25:42,303 INFO L225 Difference]: With dead ends: 1605 [2021-10-11 02:25:42,303 INFO L226 Difference]: Without dead ends: 803 [2021-10-11 02:25:42,304 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 02:25:42,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2021-10-11 02:25:42,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 723. [2021-10-11 02:25:42,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 723 states. [2021-10-11 02:25:42,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 810 transitions. [2021-10-11 02:25:42,326 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 810 transitions. Word has length 181 [2021-10-11 02:25:42,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:25:42,326 INFO L481 AbstractCegarLoop]: Abstraction has 723 states and 810 transitions. [2021-10-11 02:25:42,326 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:25:42,326 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 810 transitions. [2021-10-11 02:25:42,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2021-10-11 02:25:42,330 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:25:42,330 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:25:42,330 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-11 02:25:42,330 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:25:42,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:25:42,331 INFO L82 PathProgramCache]: Analyzing trace with hash -973981049, now seen corresponding path program 1 times [2021-10-11 02:25:42,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:25:42,335 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544277411] [2021-10-11 02:25:42,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:25:42,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:42,431 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 150 proven. 0 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2021-10-11 02:25:42,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544277411] [2021-10-11 02:25:42,433 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:25:42,433 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:25:42,433 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841441792] [2021-10-11 02:25:42,433 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:25:42,434 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:25:42,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:25:42,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:25:42,434 INFO L87 Difference]: Start difference. First operand 723 states and 810 transitions. Second operand 3 states. [2021-10-11 02:25:42,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:25:42,747 INFO L93 Difference]: Finished difference Result 1683 states and 1884 transitions. [2021-10-11 02:25:42,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:25:42,748 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 217 [2021-10-11 02:25:42,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:25:42,750 INFO L225 Difference]: With dead ends: 1683 [2021-10-11 02:25:42,751 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:25:42,753 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 02:25:42,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:25:42,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:25:42,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:25:42,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:25:42,754 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 217 [2021-10-11 02:25:42,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:25:42,754 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:25:42,754 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:25:42,755 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:25:42,755 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:25:42,755 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-11 02:25:42,757 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 02:25:42,933 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 25 [2021-10-11 02:25:43,037 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 25 [2021-10-11 02:25:43,039 INFO L262 CegarLoopResult]: For program point L301(lines 301 423) no Hoare annotation was computed. [2021-10-11 02:25:43,039 INFO L262 CegarLoopResult]: For program point L235(lines 235 423) no Hoare annotation was computed. [2021-10-11 02:25:43,039 INFO L262 CegarLoopResult]: For program point L169(lines 169 423) no Hoare annotation was computed. [2021-10-11 02:25:43,040 INFO L262 CegarLoopResult]: For program point L303(lines 303 423) no Hoare annotation was computed. [2021-10-11 02:25:43,040 INFO L262 CegarLoopResult]: For program point L105(lines 105 423) no Hoare annotation was computed. [2021-10-11 02:25:43,040 INFO L262 CegarLoopResult]: For program point L40(lines 40 423) no Hoare annotation was computed. [2021-10-11 02:25:43,040 INFO L262 CegarLoopResult]: For program point L371(lines 371 423) no Hoare annotation was computed. [2021-10-11 02:25:43,040 INFO L262 CegarLoopResult]: For program point L307(lines 307 423) no Hoare annotation was computed. [2021-10-11 02:25:43,040 INFO L262 CegarLoopResult]: For program point L175(lines 175 423) no Hoare annotation was computed. [2021-10-11 02:25:43,040 INFO L262 CegarLoopResult]: For program point L109(lines 109 423) no Hoare annotation was computed. [2021-10-11 02:25:43,040 INFO L262 CegarLoopResult]: For program point L242(lines 242 423) no Hoare annotation was computed. [2021-10-11 02:25:43,040 INFO L262 CegarLoopResult]: For program point L45(lines 45 423) no Hoare annotation was computed. [2021-10-11 02:25:43,040 INFO L262 CegarLoopResult]: For program point L244(lines 244 423) no Hoare annotation was computed. [2021-10-11 02:25:43,041 INFO L262 CegarLoopResult]: For program point L179(lines 179 423) no Hoare annotation was computed. [2021-10-11 02:25:43,041 INFO L262 CegarLoopResult]: For program point L378(lines 378 423) no Hoare annotation was computed. [2021-10-11 02:25:43,041 INFO L262 CegarLoopResult]: For program point L48(lines 48 423) no Hoare annotation was computed. [2021-10-11 02:25:43,041 INFO L262 CegarLoopResult]: For program point L247(lines 247 423) no Hoare annotation was computed. [2021-10-11 02:25:43,041 INFO L262 CegarLoopResult]: For program point L116(lines 116 423) no Hoare annotation was computed. [2021-10-11 02:25:43,041 INFO L262 CegarLoopResult]: For program point L52(lines 52 423) no Hoare annotation was computed. [2021-10-11 02:25:43,041 INFO L262 CegarLoopResult]: For program point L185(lines 185 423) no Hoare annotation was computed. [2021-10-11 02:25:43,041 INFO L262 CegarLoopResult]: For program point L385(lines 385 423) no Hoare annotation was computed. [2021-10-11 02:25:43,041 INFO L262 CegarLoopResult]: For program point L319(lines 319 423) no Hoare annotation was computed. [2021-10-11 02:25:43,041 INFO L262 CegarLoopResult]: For program point L189(lines 189 423) no Hoare annotation was computed. [2021-10-11 02:25:43,042 INFO L262 CegarLoopResult]: For program point L123(lines 123 423) no Hoare annotation was computed. [2021-10-11 02:25:43,042 INFO L262 CegarLoopResult]: For program point L57(lines 57 423) no Hoare annotation was computed. [2021-10-11 02:25:43,042 INFO L262 CegarLoopResult]: For program point L388(lines 388 423) no Hoare annotation was computed. [2021-10-11 02:25:43,042 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 02:25:43,042 INFO L262 CegarLoopResult]: For program point L390(lines 390 423) no Hoare annotation was computed. [2021-10-11 02:25:43,042 INFO L262 CegarLoopResult]: For program point L324(lines 324 423) no Hoare annotation was computed. [2021-10-11 02:25:43,042 INFO L262 CegarLoopResult]: For program point L258(lines 258 423) no Hoare annotation was computed. [2021-10-11 02:25:43,042 INFO L262 CegarLoopResult]: For program point L60(lines 60 423) no Hoare annotation was computed. [2021-10-11 02:25:43,042 INFO L262 CegarLoopResult]: For program point L457-1(lines 39 608) no Hoare annotation was computed. [2021-10-11 02:25:43,043 INFO L262 CegarLoopResult]: For program point L195(lines 195 423) no Hoare annotation was computed. [2021-10-11 02:25:43,044 INFO L262 CegarLoopResult]: For program point L129(lines 129 423) no Hoare annotation was computed. [2021-10-11 02:25:43,044 INFO L262 CegarLoopResult]: For program point L460-1(lines 39 608) no Hoare annotation was computed. [2021-10-11 02:25:43,044 INFO L262 CegarLoopResult]: For program point L64(lines 64 423) no Hoare annotation was computed. [2021-10-11 02:25:43,044 INFO L262 CegarLoopResult]: For program point L461(line 461) no Hoare annotation was computed. [2021-10-11 02:25:43,044 INFO L262 CegarLoopResult]: For program point L263(lines 263 423) no Hoare annotation was computed. [2021-10-11 02:25:43,044 INFO L262 CegarLoopResult]: For program point L197(lines 197 423) no Hoare annotation was computed. [2021-10-11 02:25:43,044 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 461) no Hoare annotation was computed. [2021-10-11 02:25:43,044 INFO L262 CegarLoopResult]: For program point L199(lines 199 423) no Hoare annotation was computed. [2021-10-11 02:25:43,045 INFO L262 CegarLoopResult]: For program point L133(lines 133 423) no Hoare annotation was computed. [2021-10-11 02:25:43,045 INFO L262 CegarLoopResult]: For program point L399(lines 399 423) no Hoare annotation was computed. [2021-10-11 02:25:43,045 INFO L262 CegarLoopResult]: For program point L201(lines 201 423) no Hoare annotation was computed. [2021-10-11 02:25:43,045 INFO L262 CegarLoopResult]: For program point L69(lines 69 423) no Hoare annotation was computed. [2021-10-11 02:25:43,045 INFO L262 CegarLoopResult]: For program point L269(lines 269 423) no Hoare annotation was computed. [2021-10-11 02:25:43,045 INFO L262 CegarLoopResult]: For program point L204(lines 204 423) no Hoare annotation was computed. [2021-10-11 02:25:43,045 INFO L262 CegarLoopResult]: For program point L271(lines 271 423) no Hoare annotation was computed. [2021-10-11 02:25:43,045 INFO L262 CegarLoopResult]: For program point L404(lines 404 423) no Hoare annotation was computed. [2021-10-11 02:25:43,045 INFO L262 CegarLoopResult]: For program point L338(lines 338 423) no Hoare annotation was computed. [2021-10-11 02:25:43,045 INFO L262 CegarLoopResult]: For program point L140(lines 140 423) no Hoare annotation was computed. [2021-10-11 02:25:43,046 INFO L262 CegarLoopResult]: For program point L75(lines 75 423) no Hoare annotation was computed. [2021-10-11 02:25:43,046 INFO L262 CegarLoopResult]: For program point L208(lines 208 423) no Hoare annotation was computed. [2021-10-11 02:25:43,046 INFO L262 CegarLoopResult]: For program point L341(lines 341 423) no Hoare annotation was computed. [2021-10-11 02:25:43,046 INFO L262 CegarLoopResult]: For program point L408(lines 408 423) no Hoare annotation was computed. [2021-10-11 02:25:43,046 INFO L262 CegarLoopResult]: For program point L144(lines 144 423) no Hoare annotation was computed. [2021-10-11 02:25:43,046 INFO L258 CegarLoopResult]: At program point L607(lines 39 608) the Hoare annotation is: (let ((.cse0 (<= ~a17~0 7)) (.cse1 (<= ~a28~0 10)) (.cse3 (<= 8 ~a17~0)) (.cse4 (= ~a25~0 1)) (.cse2 (<= ~a17~0 8))) (or (and (<= 10 ~a28~0) .cse0 .cse1) (and (<= ~a19~0 0) .cse2 .cse1) (and .cse3 .cse2 .cse1) (and (<= ~a28~0 7) .cse2) (and .cse4 .cse0 .cse1) (and (= ~a19~0 1) .cse3 .cse4 .cse2))) [2021-10-11 02:25:43,046 INFO L262 CegarLoopResult]: For program point L79(lines 79 423) no Hoare annotation was computed. [2021-10-11 02:25:43,047 INFO L262 CegarLoopResult]: For program point L212(lines 212 423) no Hoare annotation was computed. [2021-10-11 02:25:43,047 INFO L265 CegarLoopResult]: At program point L610(lines 610 627) the Hoare annotation is: true [2021-10-11 02:25:43,047 INFO L262 CegarLoopResult]: For program point L412(lines 412 423) no Hoare annotation was computed. [2021-10-11 02:25:43,047 INFO L262 CegarLoopResult]: For program point L347(lines 347 423) no Hoare annotation was computed. [2021-10-11 02:25:43,047 INFO L262 CegarLoopResult]: For program point L149(lines 149 423) no Hoare annotation was computed. [2021-10-11 02:25:43,047 INFO L262 CegarLoopResult]: For program point L414(lines 414 423) no Hoare annotation was computed. [2021-10-11 02:25:43,047 INFO L262 CegarLoopResult]: For program point L84(lines 84 423) no Hoare annotation was computed. [2021-10-11 02:25:43,047 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 02:25:43,047 INFO L262 CegarLoopResult]: For program point L417(lines 417 423) no Hoare annotation was computed. [2021-10-11 02:25:43,048 INFO L262 CegarLoopResult]: For program point L153(lines 153 423) no Hoare annotation was computed. [2021-10-11 02:25:43,048 INFO L258 CegarLoopResult]: At program point L616-2(lines 616 626) the Hoare annotation is: (let ((.cse0 (<= ~a17~0 7)) (.cse1 (<= ~a28~0 10)) (.cse3 (<= 8 ~a17~0)) (.cse4 (= ~a25~0 1)) (.cse2 (<= ~a17~0 8))) (or (and (<= 10 ~a28~0) .cse0 .cse1) (and (<= ~a19~0 0) .cse2 .cse1) (and .cse3 .cse2 .cse1) (and (<= ~a28~0 7) .cse2) (and .cse4 .cse0 .cse1) (and (= ~a19~0 1) .cse3 .cse4 .cse2))) [2021-10-11 02:25:43,048 INFO L262 CegarLoopResult]: For program point L286(lines 286 423) no Hoare annotation was computed. [2021-10-11 02:25:43,048 INFO L262 CegarLoopResult]: For program point L419(lines 419 423) no Hoare annotation was computed. [2021-10-11 02:25:43,048 INFO L262 CegarLoopResult]: For program point L222(lines 222 423) no Hoare annotation was computed. [2021-10-11 02:25:43,048 INFO L262 CegarLoopResult]: For program point L290(lines 290 423) no Hoare annotation was computed. [2021-10-11 02:25:43,048 INFO L262 CegarLoopResult]: For program point L158(lines 158 423) no Hoare annotation was computed. [2021-10-11 02:25:43,048 INFO L262 CegarLoopResult]: For program point L92(lines 92 423) no Hoare annotation was computed. [2021-10-11 02:25:43,049 INFO L262 CegarLoopResult]: For program point L621(line 621) no Hoare annotation was computed. [2021-10-11 02:25:43,049 INFO L262 CegarLoopResult]: For program point L225(lines 225 423) no Hoare annotation was computed. [2021-10-11 02:25:43,049 INFO L262 CegarLoopResult]: For program point L359(lines 359 423) no Hoare annotation was computed. [2021-10-11 02:25:43,049 INFO L262 CegarLoopResult]: For program point L293(lines 293 423) no Hoare annotation was computed. [2021-10-11 02:25:43,049 INFO L262 CegarLoopResult]: For program point L228(lines 228 423) no Hoare annotation was computed. [2021-10-11 02:25:43,049 INFO L262 CegarLoopResult]: For program point L296(lines 296 423) no Hoare annotation was computed. [2021-10-11 02:25:43,049 INFO L262 CegarLoopResult]: For program point L164(lines 164 423) no Hoare annotation was computed. [2021-10-11 02:25:43,049 INFO L262 CegarLoopResult]: For program point L364(lines 364 423) no Hoare annotation was computed. [2021-10-11 02:25:43,049 INFO L262 CegarLoopResult]: For program point L233(lines 233 423) no Hoare annotation was computed. [2021-10-11 02:25:43,049 INFO L262 CegarLoopResult]: For program point L101(lines 101 423) no Hoare annotation was computed. [2021-10-11 02:25:43,068 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:25:43 BoogieIcfgContainer [2021-10-11 02:25:43,068 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:25:43,068 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:25:43,068 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:25:43,069 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:25:43,069 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:25:36" (3/4) ... [2021-10-11 02:25:43,072 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:25:43,094 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 113 nodes and edges [2021-10-11 02:25:43,096 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2021-10-11 02:25:43,098 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2021-10-11 02:25:43,100 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-11 02:25:43,250 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_677d52da-d4d3-4c58-aa54-1dcf97b0803d/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:25:43,250 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:25:43,251 INFO L168 Benchmark]: Toolchain (without parser) took 10510.06 ms. Allocated memory was 115.3 MB in the beginning and 281.0 MB in the end (delta: 165.7 MB). Free memory was 74.1 MB in the beginning and 188.3 MB in the end (delta: -114.2 MB). Peak memory consumption was 50.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:25:43,251 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 115.3 MB. Free memory was 92.2 MB in the beginning and 92.1 MB in the end (delta: 66.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:25:43,252 INFO L168 Benchmark]: CACSL2BoogieTranslator took 669.06 ms. Allocated memory is still 115.3 MB. Free memory was 73.9 MB in the beginning and 74.7 MB in the end (delta: -830.5 kB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:25:43,252 INFO L168 Benchmark]: Boogie Procedure Inliner took 104.06 ms. Allocated memory is still 115.3 MB. Free memory was 74.7 MB in the beginning and 69.4 MB in the end (delta: 5.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-11 02:25:43,253 INFO L168 Benchmark]: Boogie Preprocessor took 80.24 ms. Allocated memory is still 115.3 MB. Free memory was 69.4 MB in the beginning and 64.9 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:25:43,253 INFO L168 Benchmark]: RCFGBuilder took 2691.70 ms. Allocated memory was 115.3 MB in the beginning and 146.8 MB in the end (delta: 31.5 MB). Free memory was 64.9 MB in the beginning and 56.7 MB in the end (delta: 8.2 MB). Peak memory consumption was 64.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:25:43,253 INFO L168 Benchmark]: TraceAbstraction took 6770.71 ms. Allocated memory was 146.8 MB in the beginning and 281.0 MB in the end (delta: 134.2 MB). Free memory was 56.7 MB in the beginning and 203.0 MB in the end (delta: -146.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:25:43,254 INFO L168 Benchmark]: Witness Printer took 181.81 ms. Allocated memory is still 281.0 MB. Free memory was 203.0 MB in the beginning and 188.3 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:25:43,256 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 115.3 MB. Free memory was 92.2 MB in the beginning and 92.1 MB in the end (delta: 66.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 669.06 ms. Allocated memory is still 115.3 MB. Free memory was 73.9 MB in the beginning and 74.7 MB in the end (delta: -830.5 kB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 104.06 ms. Allocated memory is still 115.3 MB. Free memory was 74.7 MB in the beginning and 69.4 MB in the end (delta: 5.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 80.24 ms. Allocated memory is still 115.3 MB. Free memory was 69.4 MB in the beginning and 64.9 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2691.70 ms. Allocated memory was 115.3 MB in the beginning and 146.8 MB in the end (delta: 31.5 MB). Free memory was 64.9 MB in the beginning and 56.7 MB in the end (delta: 8.2 MB). Peak memory consumption was 64.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6770.71 ms. Allocated memory was 146.8 MB in the beginning and 281.0 MB in the end (delta: 134.2 MB). Free memory was 56.7 MB in the beginning and 203.0 MB in the end (delta: -146.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 181.81 ms. Allocated memory is still 281.0 MB. Free memory was 203.0 MB in the beginning and 188.3 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 461]: 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: ((((((10 <= a28 && a17 <= 7) && a28 <= 10) || ((a19 <= 0 && a17 <= 8) && a28 <= 10)) || ((8 <= a17 && a17 <= 8) && a28 <= 10)) || (a28 <= 7 && a17 <= 8)) || ((a25 == 1 && a17 <= 7) && a28 <= 10)) || (((a19 == 1 && 8 <= a17) && a25 == 1) && a17 <= 8) - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: ((((((10 <= a28 && a17 <= 7) && a28 <= 10) || ((a19 <= 0 && a17 <= 8) && a28 <= 10)) || ((8 <= a17 && a17 <= 8) && a28 <= 10)) || (a28 <= 7 && a17 <= 8)) || ((a25 == 1 && a17 <= 7) && a28 <= 10)) || (((a19 == 1 && 8 <= a17) && a25 == 1) && a17 <= 8) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.3s, OverallIterations: 9, TraceHistogramMax: 7, AutomataDifference: 3.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 640 SDtfs, 563 SDslu, 40 SDs, 0 SdLazy, 1844 SolverSat, 491 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 236 GetRequests, 223 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=723occurred 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: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 320 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 37 NumberOfFragments, 123 HoareAnnotationTreeSize, 3 FomulaSimplifications, 610 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 24 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 1266 NumberOfCodeBlocks, 1266 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 1362 ConstructedInterpolants, 0 QuantifiedInterpolants, 467020 SizeOfPredicates, 0 NumberOfNonLiveVariables, 263 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 11 InterpolantComputations, 10 PerfectInterpolantSequences, 792/808 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...