./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem02_label33.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_08f2929f-6b32-4f35-a76b-e65c099c3882/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08f2929f-6b32-4f35-a76b-e65c099c3882/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_08f2929f-6b32-4f35-a76b-e65c099c3882/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08f2929f-6b32-4f35-a76b-e65c099c3882/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem02_label33.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08f2929f-6b32-4f35-a76b-e65c099c3882/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_08f2929f-6b32-4f35-a76b-e65c099c3882/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 1dec9e8fbdb4ba5e360b4daec42a611536a5a5ce ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 02:28:04,383 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:28:04,385 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:28:04,424 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:28:04,425 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:28:04,426 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:28:04,429 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:28:04,432 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:28:04,435 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:28:04,437 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:28:04,439 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:28:04,441 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:28:04,441 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:28:04,443 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:28:04,445 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:28:04,447 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:28:04,448 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:28:04,450 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:28:04,453 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:28:04,458 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:28:04,460 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:28:04,468 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:28:04,470 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:28:04,471 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:28:04,478 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:28:04,480 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:28:04,481 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:28:04,482 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:28:04,484 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:28:04,485 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:28:04,486 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:28:04,488 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:28:04,490 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:28:04,492 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:28:04,494 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:28:04,494 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:28:04,495 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:28:04,496 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:28:04,496 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:28:04,497 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:28:04,498 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:28:04,503 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08f2929f-6b32-4f35-a76b-e65c099c3882/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:28:04,545 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:28:04,545 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:28:04,546 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:28:04,546 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:28:04,547 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:28:04,547 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:28:04,547 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:28:04,547 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:28:04,548 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:28:04,548 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:28:04,548 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:28:04,548 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:28:04,549 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:28:04,549 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:28:04,549 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:28:04,550 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:28:04,551 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:28:04,551 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:28:04,551 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:28:04,551 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:28:04,552 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:28:04,552 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:28:04,552 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:28:04,552 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:28:04,553 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:28:04,553 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:28:04,553 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:28:04,554 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:28:04,554 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:28:04,554 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:28:04,554 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:28:04,555 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:28:04,555 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:28:04,555 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:28:04,556 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:28:04,556 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:28:04,556 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:28:04,556 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:28:04,557 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:28:04,557 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_08f2929f-6b32-4f35-a76b-e65c099c3882/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08f2929f-6b32-4f35-a76b-e65c099c3882/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1dec9e8fbdb4ba5e360b4daec42a611536a5a5ce [2021-10-11 02:28:04,852 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:28:04,884 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:28:04,887 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:28:04,890 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:28:04,891 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:28:04,892 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08f2929f-6b32-4f35-a76b-e65c099c3882/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/eca-rers2012/Problem02_label33.c [2021-10-11 02:28:04,989 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08f2929f-6b32-4f35-a76b-e65c099c3882/bin/utaipan-WLngWcDbfI/data/b8c478e2a/64d1c2c4936341f5ad919c1a222afde8/FLAG30d586d79 [2021-10-11 02:28:05,583 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:28:05,584 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08f2929f-6b32-4f35-a76b-e65c099c3882/sv-benchmarks/c/eca-rers2012/Problem02_label33.c [2021-10-11 02:28:05,603 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08f2929f-6b32-4f35-a76b-e65c099c3882/bin/utaipan-WLngWcDbfI/data/b8c478e2a/64d1c2c4936341f5ad919c1a222afde8/FLAG30d586d79 [2021-10-11 02:28:05,840 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08f2929f-6b32-4f35-a76b-e65c099c3882/bin/utaipan-WLngWcDbfI/data/b8c478e2a/64d1c2c4936341f5ad919c1a222afde8 [2021-10-11 02:28:05,843 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:28:05,844 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:28:05,853 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:28:05,854 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:28:05,858 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:28:05,858 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:28:05" (1/1) ... [2021-10-11 02:28:05,875 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@792c4f94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:05, skipping insertion in model container [2021-10-11 02:28:05,875 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:28:05" (1/1) ... [2021-10-11 02:28:05,883 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:28:05,935 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:28:06,343 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_08f2929f-6b32-4f35-a76b-e65c099c3882/sv-benchmarks/c/eca-rers2012/Problem02_label33.c[21447,21460] [2021-10-11 02:28:06,360 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:28:06,386 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:28:06,513 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_08f2929f-6b32-4f35-a76b-e65c099c3882/sv-benchmarks/c/eca-rers2012/Problem02_label33.c[21447,21460] [2021-10-11 02:28:06,519 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:28:06,546 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:28:06,546 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:06 WrapperNode [2021-10-11 02:28:06,546 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:28:06,547 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:28:06,547 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:28:06,548 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:28:06,557 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:06" (1/1) ... [2021-10-11 02:28:06,595 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:06" (1/1) ... [2021-10-11 02:28:06,668 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:28:06,669 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:28:06,669 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:28:06,669 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:28:06,677 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:06" (1/1) ... [2021-10-11 02:28:06,677 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:06" (1/1) ... [2021-10-11 02:28:06,681 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:06" (1/1) ... [2021-10-11 02:28:06,682 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:06" (1/1) ... [2021-10-11 02:28:06,703 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:06" (1/1) ... [2021-10-11 02:28:06,713 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:06" (1/1) ... [2021-10-11 02:28:06,721 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:06" (1/1) ... [2021-10-11 02:28:06,729 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:28:06,730 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:28:06,730 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:28:06,730 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:28:06,731 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:06" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08f2929f-6b32-4f35-a76b-e65c099c3882/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 02:28:06,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:28:06,849 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:28:06,849 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:28:06,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:28:09,310 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:28:09,310 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-11 02:28:09,316 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:28:09 BoogieIcfgContainer [2021-10-11 02:28:09,317 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:28:09,319 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:28:09,320 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:28:09,324 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:28:09,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:28:05" (1/3) ... [2021-10-11 02:28:09,326 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b3a195a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:28:09, skipping insertion in model container [2021-10-11 02:28:09,327 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:06" (2/3) ... [2021-10-11 02:28:09,327 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b3a195a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:28:09, skipping insertion in model container [2021-10-11 02:28:09,327 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:28:09" (3/3) ... [2021-10-11 02:28:09,330 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem02_label33.c [2021-10-11 02:28:09,347 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:28:09,351 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:28:09,365 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 02:28:09,408 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:28:09,408 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:28:09,408 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:28:09,408 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:28:09,409 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:28:09,409 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:28:09,409 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:28:09,409 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:28:09,428 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states. [2021-10-11 02:28:09,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-10-11 02:28:09,442 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:09,443 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 02:28:09,443 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:28:09,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:09,450 INFO L82 PathProgramCache]: Analyzing trace with hash 925963791, now seen corresponding path program 1 times [2021-10-11 02:28:09,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:09,462 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268712831] [2021-10-11 02:28:09,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:09,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:09,900 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 02:28:09,901 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268712831] [2021-10-11 02:28:09,902 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:28:09,903 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:28:09,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914896194] [2021-10-11 02:28:09,909 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:28:09,910 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:28:09,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:28:09,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:28:09,927 INFO L87 Difference]: Start difference. First operand 85 states. Second operand 3 states. [2021-10-11 02:28:10,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:10,612 INFO L93 Difference]: Finished difference Result 251 states and 482 transitions. [2021-10-11 02:28:10,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:28:10,614 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2021-10-11 02:28:10,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:10,651 INFO L225 Difference]: With dead ends: 251 [2021-10-11 02:28:10,652 INFO L226 Difference]: Without dead ends: 163 [2021-10-11 02:28:10,655 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 02:28:10,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-10-11 02:28:10,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2021-10-11 02:28:10,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2021-10-11 02:28:10,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 298 transitions. [2021-10-11 02:28:10,736 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 298 transitions. Word has length 80 [2021-10-11 02:28:10,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:10,737 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 298 transitions. [2021-10-11 02:28:10,737 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:28:10,737 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 298 transitions. [2021-10-11 02:28:10,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-10-11 02:28:10,742 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:10,742 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 02:28:10,743 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:28:10,743 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:28:10,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:10,744 INFO L82 PathProgramCache]: Analyzing trace with hash 1028684548, now seen corresponding path program 1 times [2021-10-11 02:28:10,744 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:10,744 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916709974] [2021-10-11 02:28:10,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:10,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:10,869 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 02:28:10,870 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916709974] [2021-10-11 02:28:10,870 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:28:10,871 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:28:10,871 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739639951] [2021-10-11 02:28:10,873 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:28:10,875 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:28:10,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:28:10,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:28:10,876 INFO L87 Difference]: Start difference. First operand 163 states and 298 transitions. Second operand 3 states. [2021-10-11 02:28:11,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:11,429 INFO L93 Difference]: Finished difference Result 485 states and 891 transitions. [2021-10-11 02:28:11,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:28:11,430 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 84 [2021-10-11 02:28:11,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:11,437 INFO L225 Difference]: With dead ends: 485 [2021-10-11 02:28:11,437 INFO L226 Difference]: Without dead ends: 323 [2021-10-11 02:28:11,439 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 02:28:11,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2021-10-11 02:28:11,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2021-10-11 02:28:11,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2021-10-11 02:28:11,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 488 transitions. [2021-10-11 02:28:11,477 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 488 transitions. Word has length 84 [2021-10-11 02:28:11,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:11,477 INFO L481 AbstractCegarLoop]: Abstraction has 323 states and 488 transitions. [2021-10-11 02:28:11,477 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:28:11,478 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 488 transitions. [2021-10-11 02:28:11,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-10-11 02:28:11,489 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:11,489 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 02:28:11,489 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:28:11,489 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:28:11,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:11,490 INFO L82 PathProgramCache]: Analyzing trace with hash 2137934429, now seen corresponding path program 1 times [2021-10-11 02:28:11,490 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:11,491 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916119896] [2021-10-11 02:28:11,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:11,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:11,633 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 02:28:11,633 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916119896] [2021-10-11 02:28:11,633 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1779602284] [2021-10-11 02:28:11,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08f2929f-6b32-4f35-a76b-e65c099c3882/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 02:28:11,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:11,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:28:11,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:28:12,001 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 02:28:12,001 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:28:12,111 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 02:28:12,111 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:28:12,112 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [3] total 4 [2021-10-11 02:28:12,112 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536099840] [2021-10-11 02:28:12,113 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:28:12,113 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:28:12,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:28:12,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:28:12,114 INFO L87 Difference]: Start difference. First operand 323 states and 488 transitions. Second operand 3 states. [2021-10-11 02:28:12,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:12,585 INFO L93 Difference]: Finished difference Result 565 states and 880 transitions. [2021-10-11 02:28:12,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:28:12,586 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 89 [2021-10-11 02:28:12,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:12,592 INFO L225 Difference]: With dead ends: 565 [2021-10-11 02:28:12,592 INFO L226 Difference]: Without dead ends: 563 [2021-10-11 02:28:12,594 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 02:28:12,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2021-10-11 02:28:12,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 403. [2021-10-11 02:28:12,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2021-10-11 02:28:12,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 643 transitions. [2021-10-11 02:28:12,620 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 643 transitions. Word has length 89 [2021-10-11 02:28:12,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:12,621 INFO L481 AbstractCegarLoop]: Abstraction has 403 states and 643 transitions. [2021-10-11 02:28:12,621 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:28:12,621 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 643 transitions. [2021-10-11 02:28:12,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-10-11 02:28:12,623 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:12,623 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 02:28:12,853 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-10-11 02:28:12,853 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:28:12,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:12,854 INFO L82 PathProgramCache]: Analyzing trace with hash -1427733417, now seen corresponding path program 1 times [2021-10-11 02:28:12,854 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:12,854 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878599273] [2021-10-11 02:28:12,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:12,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:12,951 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 02:28:12,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878599273] [2021-10-11 02:28:12,952 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:28:12,952 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:28:12,953 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275253299] [2021-10-11 02:28:12,955 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:28:12,955 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:28:12,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:28:12,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:28:12,956 INFO L87 Difference]: Start difference. First operand 403 states and 643 transitions. Second operand 3 states. [2021-10-11 02:28:13,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:13,269 INFO L93 Difference]: Finished difference Result 805 states and 1285 transitions. [2021-10-11 02:28:13,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:28:13,270 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 91 [2021-10-11 02:28:13,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:13,273 INFO L225 Difference]: With dead ends: 805 [2021-10-11 02:28:13,273 INFO L226 Difference]: Without dead ends: 403 [2021-10-11 02:28:13,278 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 02:28:13,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2021-10-11 02:28:13,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 403. [2021-10-11 02:28:13,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2021-10-11 02:28:13,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 588 transitions. [2021-10-11 02:28:13,300 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 588 transitions. Word has length 91 [2021-10-11 02:28:13,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:13,300 INFO L481 AbstractCegarLoop]: Abstraction has 403 states and 588 transitions. [2021-10-11 02:28:13,300 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:28:13,300 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 588 transitions. [2021-10-11 02:28:13,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-10-11 02:28:13,302 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:13,302 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 02:28:13,303 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 02:28:13,303 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:28:13,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:13,303 INFO L82 PathProgramCache]: Analyzing trace with hash -440290469, now seen corresponding path program 1 times [2021-10-11 02:28:13,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:13,304 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874402223] [2021-10-11 02:28:13,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:13,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:13,379 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 02:28:13,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874402223] [2021-10-11 02:28:13,380 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:28:13,380 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:28:13,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712538529] [2021-10-11 02:28:13,381 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:28:13,381 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:28:13,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:28:13,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:28:13,382 INFO L87 Difference]: Start difference. First operand 403 states and 588 transitions. Second operand 3 states. [2021-10-11 02:28:13,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:13,890 INFO L93 Difference]: Finished difference Result 885 states and 1350 transitions. [2021-10-11 02:28:13,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:28:13,890 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 111 [2021-10-11 02:28:13,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:13,894 INFO L225 Difference]: With dead ends: 885 [2021-10-11 02:28:13,894 INFO L226 Difference]: Without dead ends: 563 [2021-10-11 02:28:13,895 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 02:28:13,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2021-10-11 02:28:13,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 563. [2021-10-11 02:28:13,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 563 states. [2021-10-11 02:28:13,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 798 transitions. [2021-10-11 02:28:13,912 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 798 transitions. Word has length 111 [2021-10-11 02:28:13,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:13,912 INFO L481 AbstractCegarLoop]: Abstraction has 563 states and 798 transitions. [2021-10-11 02:28:13,912 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:28:13,912 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 798 transitions. [2021-10-11 02:28:13,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-10-11 02:28:13,915 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:13,915 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 02:28:13,915 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-11 02:28:13,915 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:28:13,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:13,916 INFO L82 PathProgramCache]: Analyzing trace with hash -1423409169, now seen corresponding path program 1 times [2021-10-11 02:28:13,916 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:13,916 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692380196] [2021-10-11 02:28:13,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:13,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:13,988 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 02:28:13,988 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692380196] [2021-10-11 02:28:13,988 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [417004022] [2021-10-11 02:28:13,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08f2929f-6b32-4f35-a76b-e65c099c3882/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 02:28:14,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:14,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:28:14,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:28:14,280 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 02:28:14,280 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:28:14,452 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 02:28:14,452 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:28:14,453 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3] total 5 [2021-10-11 02:28:14,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288037237] [2021-10-11 02:28:14,454 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:28:14,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:28:14,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:28:14,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:28:14,464 INFO L87 Difference]: Start difference. First operand 563 states and 798 transitions. Second operand 3 states. [2021-10-11 02:28:14,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:14,967 INFO L93 Difference]: Finished difference Result 1365 states and 1995 transitions. [2021-10-11 02:28:14,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:28:14,969 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 133 [2021-10-11 02:28:14,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:14,977 INFO L225 Difference]: With dead ends: 1365 [2021-10-11 02:28:14,978 INFO L226 Difference]: Without dead ends: 883 [2021-10-11 02:28:14,980 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 02:28:14,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 883 states. [2021-10-11 02:28:15,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 883 to 883. [2021-10-11 02:28:15,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 883 states. [2021-10-11 02:28:15,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 1183 transitions. [2021-10-11 02:28:15,009 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 1183 transitions. Word has length 133 [2021-10-11 02:28:15,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:15,009 INFO L481 AbstractCegarLoop]: Abstraction has 883 states and 1183 transitions. [2021-10-11 02:28:15,010 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:28:15,010 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 1183 transitions. [2021-10-11 02:28:15,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-10-11 02:28:15,045 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:15,046 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 02:28:15,246 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:28:15,247 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:28:15,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:15,247 INFO L82 PathProgramCache]: Analyzing trace with hash -1142795511, now seen corresponding path program 1 times [2021-10-11 02:28:15,247 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:15,248 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673729949] [2021-10-11 02:28:15,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:15,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:15,362 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 02:28:15,363 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673729949] [2021-10-11 02:28:15,363 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:28:15,364 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:28:15,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945985324] [2021-10-11 02:28:15,366 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:28:15,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:28:15,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:28:15,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:28:15,367 INFO L87 Difference]: Start difference. First operand 883 states and 1183 transitions. Second operand 5 states. [2021-10-11 02:28:16,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:16,187 INFO L93 Difference]: Finished difference Result 1961 states and 2591 transitions. [2021-10-11 02:28:16,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-11 02:28:16,188 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 135 [2021-10-11 02:28:16,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:16,195 INFO L225 Difference]: With dead ends: 1961 [2021-10-11 02:28:16,195 INFO L226 Difference]: Without dead ends: 993 [2021-10-11 02:28:16,197 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:28:16,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 993 states. [2021-10-11 02:28:16,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 993 to 883. [2021-10-11 02:28:16,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 883 states. [2021-10-11 02:28:16,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 1099 transitions. [2021-10-11 02:28:16,229 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 1099 transitions. Word has length 135 [2021-10-11 02:28:16,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:16,229 INFO L481 AbstractCegarLoop]: Abstraction has 883 states and 1099 transitions. [2021-10-11 02:28:16,229 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:28:16,230 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 1099 transitions. [2021-10-11 02:28:16,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-10-11 02:28:16,233 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:16,234 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 02:28:16,234 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-11 02:28:16,234 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:28:16,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:16,235 INFO L82 PathProgramCache]: Analyzing trace with hash 2089860307, now seen corresponding path program 1 times [2021-10-11 02:28:16,235 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:16,235 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550166365] [2021-10-11 02:28:16,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:16,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:16,382 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 64 proven. 8 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-10-11 02:28:16,382 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550166365] [2021-10-11 02:28:16,382 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [6078795] [2021-10-11 02:28:16,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08f2929f-6b32-4f35-a76b-e65c099c3882/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 02:28:16,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:16,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:28:16,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:28:16,651 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-10-11 02:28:16,651 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:28:16,805 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-10-11 02:28:16,806 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:28:16,806 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 7 [2021-10-11 02:28:16,807 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544256205] [2021-10-11 02:28:16,807 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:28:16,808 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:28:16,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:28:16,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:28:16,809 INFO L87 Difference]: Start difference. First operand 883 states and 1099 transitions. Second operand 4 states. [2021-10-11 02:28:17,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:17,424 INFO L93 Difference]: Finished difference Result 2005 states and 2562 transitions. [2021-10-11 02:28:17,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:28:17,425 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 139 [2021-10-11 02:28:17,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:17,433 INFO L225 Difference]: With dead ends: 2005 [2021-10-11 02:28:17,433 INFO L226 Difference]: Without dead ends: 1203 [2021-10-11 02:28:17,435 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 275 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:28:17,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1203 states. [2021-10-11 02:28:17,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1203 to 1123. [2021-10-11 02:28:17,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1123 states. [2021-10-11 02:28:17,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 1350 transitions. [2021-10-11 02:28:17,481 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 1350 transitions. Word has length 139 [2021-10-11 02:28:17,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:17,483 INFO L481 AbstractCegarLoop]: Abstraction has 1123 states and 1350 transitions. [2021-10-11 02:28:17,483 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:28:17,483 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 1350 transitions. [2021-10-11 02:28:17,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-10-11 02:28:17,487 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:17,487 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 02:28:17,701 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:28:17,701 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:28:17,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:17,701 INFO L82 PathProgramCache]: Analyzing trace with hash -1296447548, now seen corresponding path program 1 times [2021-10-11 02:28:17,702 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:17,702 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048840283] [2021-10-11 02:28:17,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:17,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:18,094 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 02:28:18,094 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048840283] [2021-10-11 02:28:18,094 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1833120100] [2021-10-11 02:28:18,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08f2929f-6b32-4f35-a76b-e65c099c3882/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:28:18,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:18,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 02:28:18,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:28:18,428 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 02:28:18,428 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:28:18,582 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 02:28:18,582 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:28:18,583 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2021-10-11 02:28:18,583 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334447512] [2021-10-11 02:28:18,584 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:28:18,585 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:28:18,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:28:18,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:28:18,587 INFO L87 Difference]: Start difference. First operand 1123 states and 1350 transitions. Second operand 3 states. [2021-10-11 02:28:19,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:19,031 INFO L93 Difference]: Finished difference Result 2643 states and 3124 transitions. [2021-10-11 02:28:19,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:28:19,031 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 178 [2021-10-11 02:28:19,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:19,033 INFO L225 Difference]: With dead ends: 2643 [2021-10-11 02:28:19,033 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:28:19,038 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 354 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:28:19,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:28:19,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:28:19,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:28:19,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:28:19,039 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 178 [2021-10-11 02:28:19,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:19,039 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:28:19,039 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:28:19,039 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:28:19,039 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:28:19,253 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:28:19,254 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 02:28:19,514 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 30 [2021-10-11 02:28:19,630 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 30 [2021-10-11 02:28:19,633 INFO L262 CegarLoopResult]: For program point L301(lines 301 423) no Hoare annotation was computed. [2021-10-11 02:28:19,634 INFO L262 CegarLoopResult]: For program point L235(lines 235 423) no Hoare annotation was computed. [2021-10-11 02:28:19,634 INFO L262 CegarLoopResult]: For program point L169(lines 169 423) no Hoare annotation was computed. [2021-10-11 02:28:19,634 INFO L262 CegarLoopResult]: For program point L303(lines 303 423) no Hoare annotation was computed. [2021-10-11 02:28:19,634 INFO L262 CegarLoopResult]: For program point L105(lines 105 423) no Hoare annotation was computed. [2021-10-11 02:28:19,635 INFO L262 CegarLoopResult]: For program point L40(lines 40 423) no Hoare annotation was computed. [2021-10-11 02:28:19,635 INFO L262 CegarLoopResult]: For program point L371(lines 371 423) no Hoare annotation was computed. [2021-10-11 02:28:19,635 INFO L262 CegarLoopResult]: For program point L307(lines 307 423) no Hoare annotation was computed. [2021-10-11 02:28:19,635 INFO L262 CegarLoopResult]: For program point L175(lines 175 423) no Hoare annotation was computed. [2021-10-11 02:28:19,635 INFO L262 CegarLoopResult]: For program point L109(lines 109 423) no Hoare annotation was computed. [2021-10-11 02:28:19,635 INFO L262 CegarLoopResult]: For program point L242(lines 242 423) no Hoare annotation was computed. [2021-10-11 02:28:19,635 INFO L262 CegarLoopResult]: For program point L45(lines 45 423) no Hoare annotation was computed. [2021-10-11 02:28:19,635 INFO L262 CegarLoopResult]: For program point L244(lines 244 423) no Hoare annotation was computed. [2021-10-11 02:28:19,636 INFO L262 CegarLoopResult]: For program point L179(lines 179 423) no Hoare annotation was computed. [2021-10-11 02:28:19,636 INFO L262 CegarLoopResult]: For program point L378(lines 378 423) no Hoare annotation was computed. [2021-10-11 02:28:19,636 INFO L262 CegarLoopResult]: For program point L48(lines 48 423) no Hoare annotation was computed. [2021-10-11 02:28:19,636 INFO L262 CegarLoopResult]: For program point L247(lines 247 423) no Hoare annotation was computed. [2021-10-11 02:28:19,636 INFO L262 CegarLoopResult]: For program point L116(lines 116 423) no Hoare annotation was computed. [2021-10-11 02:28:19,636 INFO L262 CegarLoopResult]: For program point L52(lines 52 423) no Hoare annotation was computed. [2021-10-11 02:28:19,636 INFO L262 CegarLoopResult]: For program point L185(lines 185 423) no Hoare annotation was computed. [2021-10-11 02:28:19,636 INFO L262 CegarLoopResult]: For program point L385(lines 385 423) no Hoare annotation was computed. [2021-10-11 02:28:19,637 INFO L262 CegarLoopResult]: For program point L319(lines 319 423) no Hoare annotation was computed. [2021-10-11 02:28:19,637 INFO L262 CegarLoopResult]: For program point L189(lines 189 423) no Hoare annotation was computed. [2021-10-11 02:28:19,637 INFO L262 CegarLoopResult]: For program point L123(lines 123 423) no Hoare annotation was computed. [2021-10-11 02:28:19,637 INFO L262 CegarLoopResult]: For program point L57(lines 57 423) no Hoare annotation was computed. [2021-10-11 02:28:19,637 INFO L262 CegarLoopResult]: For program point L388(lines 388 423) no Hoare annotation was computed. [2021-10-11 02:28:19,637 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 02:28:19,637 INFO L262 CegarLoopResult]: For program point L390(lines 390 423) no Hoare annotation was computed. [2021-10-11 02:28:19,637 INFO L262 CegarLoopResult]: For program point L324(lines 324 423) no Hoare annotation was computed. [2021-10-11 02:28:19,638 INFO L262 CegarLoopResult]: For program point L258(lines 258 423) no Hoare annotation was computed. [2021-10-11 02:28:19,638 INFO L262 CegarLoopResult]: For program point L60(lines 60 423) no Hoare annotation was computed. [2021-10-11 02:28:19,638 INFO L262 CegarLoopResult]: For program point L195(lines 195 423) no Hoare annotation was computed. [2021-10-11 02:28:19,638 INFO L262 CegarLoopResult]: For program point L129(lines 129 423) no Hoare annotation was computed. [2021-10-11 02:28:19,638 INFO L262 CegarLoopResult]: For program point L64(lines 64 423) no Hoare annotation was computed. [2021-10-11 02:28:19,638 INFO L262 CegarLoopResult]: For program point L263(lines 263 423) no Hoare annotation was computed. [2021-10-11 02:28:19,638 INFO L262 CegarLoopResult]: For program point L197(lines 197 423) no Hoare annotation was computed. [2021-10-11 02:28:19,639 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 605) no Hoare annotation was computed. [2021-10-11 02:28:19,639 INFO L262 CegarLoopResult]: For program point L199(lines 199 423) no Hoare annotation was computed. [2021-10-11 02:28:19,639 INFO L262 CegarLoopResult]: For program point L133(lines 133 423) no Hoare annotation was computed. [2021-10-11 02:28:19,639 INFO L262 CegarLoopResult]: For program point L399(lines 399 423) no Hoare annotation was computed. [2021-10-11 02:28:19,639 INFO L262 CegarLoopResult]: For program point L201(lines 201 423) no Hoare annotation was computed. [2021-10-11 02:28:19,639 INFO L262 CegarLoopResult]: For program point L69(lines 69 423) no Hoare annotation was computed. [2021-10-11 02:28:19,639 INFO L262 CegarLoopResult]: For program point L269(lines 269 423) no Hoare annotation was computed. [2021-10-11 02:28:19,639 INFO L262 CegarLoopResult]: For program point L204(lines 204 423) no Hoare annotation was computed. [2021-10-11 02:28:19,640 INFO L262 CegarLoopResult]: For program point L601-1(lines 39 608) no Hoare annotation was computed. [2021-10-11 02:28:19,640 INFO L262 CegarLoopResult]: For program point L271(lines 271 423) no Hoare annotation was computed. [2021-10-11 02:28:19,640 INFO L262 CegarLoopResult]: For program point L404(lines 404 423) no Hoare annotation was computed. [2021-10-11 02:28:19,640 INFO L262 CegarLoopResult]: For program point L338(lines 338 423) no Hoare annotation was computed. [2021-10-11 02:28:19,640 INFO L262 CegarLoopResult]: For program point L140(lines 140 423) no Hoare annotation was computed. [2021-10-11 02:28:19,640 INFO L262 CegarLoopResult]: For program point L75(lines 75 423) no Hoare annotation was computed. [2021-10-11 02:28:19,640 INFO L262 CegarLoopResult]: For program point L604-1(lines 604 606) no Hoare annotation was computed. [2021-10-11 02:28:19,640 INFO L262 CegarLoopResult]: For program point L208(lines 208 423) no Hoare annotation was computed. [2021-10-11 02:28:19,641 INFO L262 CegarLoopResult]: For program point L605(line 605) no Hoare annotation was computed. [2021-10-11 02:28:19,641 INFO L262 CegarLoopResult]: For program point L341(lines 341 423) no Hoare annotation was computed. [2021-10-11 02:28:19,641 INFO L262 CegarLoopResult]: For program point L408(lines 408 423) no Hoare annotation was computed. [2021-10-11 02:28:19,641 INFO L262 CegarLoopResult]: For program point L144(lines 144 423) no Hoare annotation was computed. [2021-10-11 02:28:19,641 INFO L258 CegarLoopResult]: At program point L607(lines 39 608) the Hoare annotation is: (let ((.cse0 (= ~a19~0 1)) (.cse3 (<= 10 ~a28~0)) (.cse5 (= ~a25~0 0)) (.cse1 (<= 8 ~a17~0)) (.cse2 (<= ~a17~0 8)) (.cse4 (<= ~a28~0 7))) (or (and .cse0 (= ~a21~0 1) .cse1 .cse2) (and .cse3 .cse1 .cse2) (and (= ~a25~0 ~a11~0) .cse0 .cse2 .cse4) (and .cse0 .cse3 .cse5 .cse2) (and .cse5 .cse2 (< ~a28~0 9)) (and (= ~a11~0 1) .cse2) (and .cse1 .cse2 .cse4))) [2021-10-11 02:28:19,642 INFO L262 CegarLoopResult]: For program point L79(lines 79 423) no Hoare annotation was computed. [2021-10-11 02:28:19,642 INFO L262 CegarLoopResult]: For program point L212(lines 212 423) no Hoare annotation was computed. [2021-10-11 02:28:19,642 INFO L265 CegarLoopResult]: At program point L610(lines 610 627) the Hoare annotation is: true [2021-10-11 02:28:19,642 INFO L262 CegarLoopResult]: For program point L412(lines 412 423) no Hoare annotation was computed. [2021-10-11 02:28:19,642 INFO L262 CegarLoopResult]: For program point L347(lines 347 423) no Hoare annotation was computed. [2021-10-11 02:28:19,642 INFO L262 CegarLoopResult]: For program point L149(lines 149 423) no Hoare annotation was computed. [2021-10-11 02:28:19,643 INFO L262 CegarLoopResult]: For program point L414(lines 414 423) no Hoare annotation was computed. [2021-10-11 02:28:19,644 INFO L262 CegarLoopResult]: For program point L84(lines 84 423) no Hoare annotation was computed. [2021-10-11 02:28:19,644 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 02:28:19,644 INFO L262 CegarLoopResult]: For program point L417(lines 417 423) no Hoare annotation was computed. [2021-10-11 02:28:19,645 INFO L262 CegarLoopResult]: For program point L153(lines 153 423) no Hoare annotation was computed. [2021-10-11 02:28:19,645 INFO L258 CegarLoopResult]: At program point L616-2(lines 616 626) the Hoare annotation is: (let ((.cse0 (= ~a19~0 1)) (.cse3 (<= 10 ~a28~0)) (.cse5 (= ~a25~0 0)) (.cse1 (<= 8 ~a17~0)) (.cse2 (<= ~a17~0 8)) (.cse4 (<= ~a28~0 7))) (or (and .cse0 (= ~a21~0 1) .cse1 .cse2) (and .cse3 .cse1 .cse2) (and (= ~a25~0 ~a11~0) .cse0 .cse2 .cse4) (and .cse0 .cse3 .cse5 .cse2) (and .cse5 .cse2 (< ~a28~0 9)) (and (= ~a11~0 1) .cse2) (and .cse1 .cse2 .cse4))) [2021-10-11 02:28:19,645 INFO L262 CegarLoopResult]: For program point L286(lines 286 423) no Hoare annotation was computed. [2021-10-11 02:28:19,645 INFO L262 CegarLoopResult]: For program point L419(lines 419 423) no Hoare annotation was computed. [2021-10-11 02:28:19,645 INFO L262 CegarLoopResult]: For program point L222(lines 222 423) no Hoare annotation was computed. [2021-10-11 02:28:19,645 INFO L262 CegarLoopResult]: For program point L290(lines 290 423) no Hoare annotation was computed. [2021-10-11 02:28:19,649 INFO L262 CegarLoopResult]: For program point L158(lines 158 423) no Hoare annotation was computed. [2021-10-11 02:28:19,649 INFO L262 CegarLoopResult]: For program point L92(lines 92 423) no Hoare annotation was computed. [2021-10-11 02:28:19,649 INFO L262 CegarLoopResult]: For program point L621(line 621) no Hoare annotation was computed. [2021-10-11 02:28:19,650 INFO L262 CegarLoopResult]: For program point L225(lines 225 423) no Hoare annotation was computed. [2021-10-11 02:28:19,650 INFO L262 CegarLoopResult]: For program point L359(lines 359 423) no Hoare annotation was computed. [2021-10-11 02:28:19,650 INFO L262 CegarLoopResult]: For program point L293(lines 293 423) no Hoare annotation was computed. [2021-10-11 02:28:19,650 INFO L262 CegarLoopResult]: For program point L228(lines 228 423) no Hoare annotation was computed. [2021-10-11 02:28:19,650 INFO L262 CegarLoopResult]: For program point L296(lines 296 423) no Hoare annotation was computed. [2021-10-11 02:28:19,650 INFO L262 CegarLoopResult]: For program point L164(lines 164 423) no Hoare annotation was computed. [2021-10-11 02:28:19,650 INFO L262 CegarLoopResult]: For program point L364(lines 364 423) no Hoare annotation was computed. [2021-10-11 02:28:19,650 INFO L262 CegarLoopResult]: For program point L233(lines 233 423) no Hoare annotation was computed. [2021-10-11 02:28:19,651 INFO L262 CegarLoopResult]: For program point L101(lines 101 423) no Hoare annotation was computed. [2021-10-11 02:28:19,682 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:28:19 BoogieIcfgContainer [2021-10-11 02:28:19,683 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:28:19,684 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:28:19,684 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:28:19,685 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:28:19,685 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:28:09" (3/4) ... [2021-10-11 02:28:19,688 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:28:19,722 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 113 nodes and edges [2021-10-11 02:28:19,724 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2021-10-11 02:28:19,726 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2021-10-11 02:28:19,728 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-10-11 02:28:19,883 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08f2929f-6b32-4f35-a76b-e65c099c3882/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:28:19,883 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:28:19,884 INFO L168 Benchmark]: Toolchain (without parser) took 14039.16 ms. Allocated memory was 79.7 MB in the beginning and 329.3 MB in the end (delta: 249.6 MB). Free memory was 42.1 MB in the beginning and 172.5 MB in the end (delta: -130.4 MB). Peak memory consumption was 118.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:19,885 INFO L168 Benchmark]: CDTParser took 0.98 ms. Allocated memory is still 79.7 MB. Free memory is still 60.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:28:19,885 INFO L168 Benchmark]: CACSL2BoogieTranslator took 693.05 ms. Allocated memory was 79.7 MB in the beginning and 96.5 MB in the end (delta: 16.8 MB). Free memory was 41.9 MB in the beginning and 55.7 MB in the end (delta: -13.8 MB). Peak memory consumption was 4.3 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:19,886 INFO L168 Benchmark]: Boogie Procedure Inliner took 121.22 ms. Allocated memory is still 96.5 MB. Free memory was 55.7 MB in the beginning and 50.2 MB in the end (delta: 5.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:19,887 INFO L168 Benchmark]: Boogie Preprocessor took 60.12 ms. Allocated memory is still 96.5 MB. Free memory was 50.2 MB in the beginning and 45.7 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:19,887 INFO L168 Benchmark]: RCFGBuilder took 2587.16 ms. Allocated memory was 96.5 MB in the beginning and 123.7 MB in the end (delta: 27.3 MB). Free memory was 45.7 MB in the beginning and 90.0 MB in the end (delta: -44.3 MB). Peak memory consumption was 38.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:19,888 INFO L168 Benchmark]: TraceAbstraction took 10364.48 ms. Allocated memory was 123.7 MB in the beginning and 329.3 MB in the end (delta: 205.5 MB). Free memory was 90.0 MB in the beginning and 187.1 MB in the end (delta: -97.1 MB). Peak memory consumption was 108.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:19,888 INFO L168 Benchmark]: Witness Printer took 198.77 ms. Allocated memory is still 329.3 MB. Free memory was 187.1 MB in the beginning and 172.5 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:19,890 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.98 ms. Allocated memory is still 79.7 MB. Free memory is still 60.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 693.05 ms. Allocated memory was 79.7 MB in the beginning and 96.5 MB in the end (delta: 16.8 MB). Free memory was 41.9 MB in the beginning and 55.7 MB in the end (delta: -13.8 MB). Peak memory consumption was 4.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 121.22 ms. Allocated memory is still 96.5 MB. Free memory was 55.7 MB in the beginning and 50.2 MB in the end (delta: 5.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 60.12 ms. Allocated memory is still 96.5 MB. Free memory was 50.2 MB in the beginning and 45.7 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2587.16 ms. Allocated memory was 96.5 MB in the beginning and 123.7 MB in the end (delta: 27.3 MB). Free memory was 45.7 MB in the beginning and 90.0 MB in the end (delta: -44.3 MB). Peak memory consumption was 38.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 10364.48 ms. Allocated memory was 123.7 MB in the beginning and 329.3 MB in the end (delta: 205.5 MB). Free memory was 90.0 MB in the beginning and 187.1 MB in the end (delta: -97.1 MB). Peak memory consumption was 108.4 MB. Max. memory is 16.1 GB. * Witness Printer took 198.77 ms. Allocated memory is still 329.3 MB. Free memory was 187.1 MB in the beginning and 172.5 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: 605]: 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: ((((((((a19 == 1 && a21 == 1) && 8 <= a17) && a17 <= 8) || ((10 <= a28 && 8 <= a17) && a17 <= 8)) || (((a25 == a11 && a19 == 1) && a17 <= 8) && a28 <= 7)) || (((a19 == 1 && 10 <= a28) && a25 == 0) && a17 <= 8)) || ((a25 == 0 && a17 <= 8) && a28 < 9)) || (a11 == 1 && a17 <= 8)) || ((8 <= a17 && a17 <= 8) && a28 <= 7) - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: ((((((((a19 == 1 && a21 == 1) && 8 <= a17) && a17 <= 8) || ((10 <= a28 && 8 <= a17) && a17 <= 8)) || (((a25 == a11 && a19 == 1) && a17 <= 8) && a28 <= 7)) || (((a19 == 1 && 10 <= a28) && a25 == 0) && a17 <= 8)) || ((a25 == 0 && a17 <= 8) && a28 < 9)) || (a11 == 1 && a17 <= 8)) || ((8 <= a17 && a17 <= 8) && a28 <= 7) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 9.8s, OverallIterations: 9, TraceHistogramMax: 5, AutomataDifference: 5.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 487 SDtfs, 841 SDslu, 73 SDs, 0 SdLazy, 2220 SolverSat, 670 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1098 GetRequests, 1072 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1123occurred in iteration=8, 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, 350 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 53 NumberOfFragments, 155 HoareAnnotationTreeSize, 3 FomulaSimplifications, 1986 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 3 FomulaSimplificationsInter, 96 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 1579 NumberOfCodeBlocks, 1579 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 2101 ConstructedInterpolants, 0 QuantifiedInterpolants, 831203 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1415 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 17 InterpolantComputations, 13 PerfectInterpolantSequences, 1033/1105 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...