./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem02_label30.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-vcloud-master/worker/run_dir_f5b53058-b0ed-4fa3-807e-f07ae86d2b16/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_f5b53058-b0ed-4fa3-807e-f07ae86d2b16/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_f5b53058-b0ed-4fa3-807e-f07ae86d2b16/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_f5b53058-b0ed-4fa3-807e-f07ae86d2b16/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem02_label30.c -s /tmp/vcloud-vcloud-master/worker/run_dir_f5b53058-b0ed-4fa3-807e-f07ae86d2b16/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_f5b53058-b0ed-4fa3-807e-f07ae86d2b16/bin/utaipan --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 b4f9225f3d12aafc9efbfc03e25947e8fb9284d9 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 05:10:19,435 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 05:10:19,436 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 05:10:19,465 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 05:10:19,466 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 05:10:19,467 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 05:10:19,469 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 05:10:19,471 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 05:10:19,473 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 05:10:19,474 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 05:10:19,475 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 05:10:19,476 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 05:10:19,477 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 05:10:19,478 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 05:10:19,479 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 05:10:19,480 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 05:10:19,481 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 05:10:19,482 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 05:10:19,484 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 05:10:19,486 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 05:10:19,488 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 05:10:19,489 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 05:10:19,490 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 05:10:19,491 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 05:10:19,494 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 05:10:19,495 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 05:10:19,495 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 05:10:19,496 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 05:10:19,497 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 05:10:19,498 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 05:10:19,498 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 05:10:19,499 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 05:10:19,500 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 05:10:19,501 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 05:10:19,502 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 05:10:19,502 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 05:10:19,503 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 05:10:19,503 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 05:10:19,503 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 05:10:19,504 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 05:10:19,504 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 05:10:19,505 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_f5b53058-b0ed-4fa3-807e-f07ae86d2b16/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 05:10:19,526 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 05:10:19,526 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 05:10:19,527 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 05:10:19,527 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 05:10:19,527 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 05:10:19,528 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 05:10:19,528 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 05:10:19,528 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 05:10:19,528 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 05:10:19,528 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 05:10:19,528 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 05:10:19,528 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 05:10:19,529 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 05:10:19,529 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 05:10:19,529 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 05:10:19,529 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 05:10:19,529 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 05:10:19,530 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 05:10:19,530 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 05:10:19,530 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 05:10:19,530 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 05:10:19,530 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 05:10:19,530 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 05:10:19,530 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 05:10:19,530 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 05:10:19,530 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 05:10:19,530 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 05:10:19,531 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 05:10:19,531 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 05:10:19,531 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 05:10:19,531 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 05:10:19,531 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 05:10:19,531 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 05:10:19,531 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 05:10:19,531 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 05:10:19,532 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 05:10:19,532 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 05:10:19,532 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 05:10:19,532 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 05:10:19,532 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-vcloud-master/worker/run_dir_f5b53058-b0ed-4fa3-807e-f07ae86d2b16/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_f5b53058-b0ed-4fa3-807e-f07ae86d2b16/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b4f9225f3d12aafc9efbfc03e25947e8fb9284d9 [2020-12-09 05:10:19,720 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 05:10:19,735 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 05:10:19,737 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 05:10:19,738 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 05:10:19,738 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 05:10:19,739 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_f5b53058-b0ed-4fa3-807e-f07ae86d2b16/bin/utaipan/../../sv-benchmarks/c/eca-rers2012/Problem02_label30.c [2020-12-09 05:10:19,779 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f5b53058-b0ed-4fa3-807e-f07ae86d2b16/bin/utaipan/data/eaca94b2f/2dab55fb0f8f4fffa6bea6647bf3b8be/FLAG118389459 [2020-12-09 05:10:20,232 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 05:10:20,233 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_f5b53058-b0ed-4fa3-807e-f07ae86d2b16/sv-benchmarks/c/eca-rers2012/Problem02_label30.c [2020-12-09 05:10:20,241 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f5b53058-b0ed-4fa3-807e-f07ae86d2b16/bin/utaipan/data/eaca94b2f/2dab55fb0f8f4fffa6bea6647bf3b8be/FLAG118389459 [2020-12-09 05:10:20,251 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_f5b53058-b0ed-4fa3-807e-f07ae86d2b16/bin/utaipan/data/eaca94b2f/2dab55fb0f8f4fffa6bea6647bf3b8be [2020-12-09 05:10:20,253 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 05:10:20,254 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 05:10:20,255 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 05:10:20,256 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 05:10:20,258 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 05:10:20,258 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 05:10:20" (1/1) ... [2020-12-09 05:10:20,260 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@643d7cf7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:10:20, skipping insertion in model container [2020-12-09 05:10:20,260 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 05:10:20" (1/1) ... [2020-12-09 05:10:20,265 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 05:10:20,294 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 05:10:20,483 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_f5b53058-b0ed-4fa3-807e-f07ae86d2b16/sv-benchmarks/c/eca-rers2012/Problem02_label30.c[19968,19981] [2020-12-09 05:10:20,497 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 05:10:20,503 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 05:10:20,562 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_f5b53058-b0ed-4fa3-807e-f07ae86d2b16/sv-benchmarks/c/eca-rers2012/Problem02_label30.c[19968,19981] [2020-12-09 05:10:20,567 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 05:10:20,578 INFO L208 MainTranslator]: Completed translation [2020-12-09 05:10:20,579 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:10:20 WrapperNode [2020-12-09 05:10:20,579 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 05:10:20,580 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 05:10:20,580 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 05:10:20,580 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 05:10:20,586 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:10:20" (1/1) ... [2020-12-09 05:10:20,605 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:10:20" (1/1) ... [2020-12-09 05:10:20,646 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 05:10:20,646 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 05:10:20,646 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 05:10:20,647 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 05:10:20,655 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:10:20" (1/1) ... [2020-12-09 05:10:20,655 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:10:20" (1/1) ... [2020-12-09 05:10:20,659 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:10:20" (1/1) ... [2020-12-09 05:10:20,660 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:10:20" (1/1) ... [2020-12-09 05:10:20,679 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:10:20" (1/1) ... [2020-12-09 05:10:20,689 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:10:20" (1/1) ... [2020-12-09 05:10:20,695 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:10:20" (1/1) ... [2020-12-09 05:10:20,702 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 05:10:20,702 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 05:10:20,703 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 05:10:20,703 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 05:10:20,704 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:10:20" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f5b53058-b0ed-4fa3-807e-f07ae86d2b16/bin/utaipan/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 [2020-12-09 05:10:20,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 05:10:20,778 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 05:10:20,778 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 05:10:20,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 05:10:22,032 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 05:10:22,033 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2020-12-09 05:10:22,035 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:10:22 BoogieIcfgContainer [2020-12-09 05:10:22,035 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 05:10:22,036 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 05:10:22,037 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 05:10:22,039 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 05:10:22,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 05:10:20" (1/3) ... [2020-12-09 05:10:22,040 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@587359a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 05:10:22, skipping insertion in model container [2020-12-09 05:10:22,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:10:20" (2/3) ... [2020-12-09 05:10:22,041 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@587359a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 05:10:22, skipping insertion in model container [2020-12-09 05:10:22,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:10:22" (3/3) ... [2020-12-09 05:10:22,042 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem02_label30.c [2020-12-09 05:10:22,052 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 05:10:22,055 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 05:10:22,062 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 05:10:22,080 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 05:10:22,080 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 05:10:22,080 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 05:10:22,080 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 05:10:22,080 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 05:10:22,080 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 05:10:22,080 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 05:10:22,080 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 05:10:22,092 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states. [2020-12-09 05:10:22,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-09 05:10:22,098 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:10:22,098 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] [2020-12-09 05:10:22,099 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:10:22,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:10:22,104 INFO L82 PathProgramCache]: Analyzing trace with hash 1497211696, now seen corresponding path program 1 times [2020-12-09 05:10:22,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:10:22,113 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012161078] [2020-12-09 05:10:22,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:10:22,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:10:22,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:10:22,371 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012161078] [2020-12-09 05:10:22,372 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:10:22,372 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 05:10:22,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843195930] [2020-12-09 05:10:22,375 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 05:10:22,376 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:10:22,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 05:10:22,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 05:10:22,389 INFO L87 Difference]: Start difference. First operand 85 states. Second operand 3 states. [2020-12-09 05:10:22,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:10:22,733 INFO L93 Difference]: Finished difference Result 251 states and 482 transitions. [2020-12-09 05:10:22,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 05:10:22,734 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2020-12-09 05:10:22,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:10:22,746 INFO L225 Difference]: With dead ends: 251 [2020-12-09 05:10:22,746 INFO L226 Difference]: Without dead ends: 163 [2020-12-09 05:10:22,749 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 [2020-12-09 05:10:22,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-12-09 05:10:22,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2020-12-09 05:10:22,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-12-09 05:10:22,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 288 transitions. [2020-12-09 05:10:22,798 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 288 transitions. Word has length 80 [2020-12-09 05:10:22,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:10:22,799 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 288 transitions. [2020-12-09 05:10:22,799 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 05:10:22,799 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 288 transitions. [2020-12-09 05:10:22,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-12-09 05:10:22,802 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:10:22,803 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:10:22,803 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 05:10:22,803 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:10:22,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:10:22,804 INFO L82 PathProgramCache]: Analyzing trace with hash 1174962575, now seen corresponding path program 1 times [2020-12-09 05:10:22,804 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:10:22,804 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586408727] [2020-12-09 05:10:22,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:10:22,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:10:22,863 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:10:22,863 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586408727] [2020-12-09 05:10:22,863 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:10:22,863 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 05:10:22,864 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737363077] [2020-12-09 05:10:22,865 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 05:10:22,865 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:10:22,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 05:10:22,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 05:10:22,866 INFO L87 Difference]: Start difference. First operand 163 states and 288 transitions. Second operand 3 states. [2020-12-09 05:10:23,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:10:23,133 INFO L93 Difference]: Finished difference Result 485 states and 861 transitions. [2020-12-09 05:10:23,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 05:10:23,134 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 98 [2020-12-09 05:10:23,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:10:23,136 INFO L225 Difference]: With dead ends: 485 [2020-12-09 05:10:23,136 INFO L226 Difference]: Without dead ends: 323 [2020-12-09 05:10:23,137 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 [2020-12-09 05:10:23,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2020-12-09 05:10:23,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2020-12-09 05:10:23,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2020-12-09 05:10:23,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 474 transitions. [2020-12-09 05:10:23,159 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 474 transitions. Word has length 98 [2020-12-09 05:10:23,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:10:23,159 INFO L481 AbstractCegarLoop]: Abstraction has 323 states and 474 transitions. [2020-12-09 05:10:23,160 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 05:10:23,160 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 474 transitions. [2020-12-09 05:10:23,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-12-09 05:10:23,163 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:10:23,164 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:10:23,164 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 05:10:23,164 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:10:23,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:10:23,165 INFO L82 PathProgramCache]: Analyzing trace with hash -2099182831, now seen corresponding path program 1 times [2020-12-09 05:10:23,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:10:23,165 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969498460] [2020-12-09 05:10:23,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:10:23,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:10:23,241 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:10:23,241 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969498460] [2020-12-09 05:10:23,242 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:10:23,242 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 05:10:23,242 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321689887] [2020-12-09 05:10:23,242 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 05:10:23,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:10:23,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 05:10:23,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 05:10:23,244 INFO L87 Difference]: Start difference. First operand 323 states and 474 transitions. Second operand 3 states. [2020-12-09 05:10:23,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:10:23,383 INFO L93 Difference]: Finished difference Result 645 states and 947 transitions. [2020-12-09 05:10:23,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 05:10:23,383 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 99 [2020-12-09 05:10:23,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:10:23,385 INFO L225 Difference]: With dead ends: 645 [2020-12-09 05:10:23,385 INFO L226 Difference]: Without dead ends: 323 [2020-12-09 05:10:23,386 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 [2020-12-09 05:10:23,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2020-12-09 05:10:23,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2020-12-09 05:10:23,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2020-12-09 05:10:23,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 434 transitions. [2020-12-09 05:10:23,401 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 434 transitions. Word has length 99 [2020-12-09 05:10:23,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:10:23,402 INFO L481 AbstractCegarLoop]: Abstraction has 323 states and 434 transitions. [2020-12-09 05:10:23,402 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 05:10:23,402 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 434 transitions. [2020-12-09 05:10:23,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-12-09 05:10:23,404 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:10:23,404 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:10:23,404 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-09 05:10:23,404 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:10:23,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:10:23,405 INFO L82 PathProgramCache]: Analyzing trace with hash 1029758470, now seen corresponding path program 1 times [2020-12-09 05:10:23,405 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:10:23,405 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603512668] [2020-12-09 05:10:23,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:10:23,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:10:23,456 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:10:23,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603512668] [2020-12-09 05:10:23,457 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:10:23,457 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 05:10:23,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623449022] [2020-12-09 05:10:23,457 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 05:10:23,457 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:10:23,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 05:10:23,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 05:10:23,458 INFO L87 Difference]: Start difference. First operand 323 states and 434 transitions. Second operand 3 states. [2020-12-09 05:10:23,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:10:23,676 INFO L93 Difference]: Finished difference Result 725 states and 982 transitions. [2020-12-09 05:10:23,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 05:10:23,677 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 103 [2020-12-09 05:10:23,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:10:23,678 INFO L225 Difference]: With dead ends: 725 [2020-12-09 05:10:23,679 INFO L226 Difference]: Without dead ends: 403 [2020-12-09 05:10:23,679 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 05:10:23,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2020-12-09 05:10:23,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 403. [2020-12-09 05:10:23,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2020-12-09 05:10:23,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 529 transitions. [2020-12-09 05:10:23,693 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 529 transitions. Word has length 103 [2020-12-09 05:10:23,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:10:23,693 INFO L481 AbstractCegarLoop]: Abstraction has 403 states and 529 transitions. [2020-12-09 05:10:23,693 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 05:10:23,694 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 529 transitions. [2020-12-09 05:10:23,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-12-09 05:10:23,695 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:10:23,696 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:10:23,696 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-09 05:10:23,696 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:10:23,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:10:23,696 INFO L82 PathProgramCache]: Analyzing trace with hash 1100249168, now seen corresponding path program 1 times [2020-12-09 05:10:23,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:10:23,697 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793388075] [2020-12-09 05:10:23,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:10:23,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:10:23,887 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 18 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:10:23,888 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793388075] [2020-12-09 05:10:23,888 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [3040931] [2020-12-09 05:10:23,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f5b53058-b0ed-4fa3-807e-f07ae86d2b16/bin/utaipan/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 [2020-12-09 05:10:23,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:10:23,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 05:10:23,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 05:10:24,048 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-09 05:10:24,048 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 05:10:24,143 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-09 05:10:24,143 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 05:10:24,143 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 7 [2020-12-09 05:10:24,144 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716619438] [2020-12-09 05:10:24,144 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 05:10:24,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:10:24,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 05:10:24,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-12-09 05:10:24,145 INFO L87 Difference]: Start difference. First operand 403 states and 529 transitions. Second operand 4 states. [2020-12-09 05:10:24,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:10:24,578 INFO L93 Difference]: Finished difference Result 965 states and 1293 transitions. [2020-12-09 05:10:24,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 05:10:24,578 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 107 [2020-12-09 05:10:24,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:10:24,581 INFO L225 Difference]: With dead ends: 965 [2020-12-09 05:10:24,581 INFO L226 Difference]: Without dead ends: 483 [2020-12-09 05:10:24,582 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-12-09 05:10:24,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2020-12-09 05:10:24,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 483. [2020-12-09 05:10:24,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 483 states. [2020-12-09 05:10:24,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 553 transitions. [2020-12-09 05:10:24,594 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 553 transitions. Word has length 107 [2020-12-09 05:10:24,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:10:24,595 INFO L481 AbstractCegarLoop]: Abstraction has 483 states and 553 transitions. [2020-12-09 05:10:24,595 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 05:10:24,595 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 553 transitions. [2020-12-09 05:10:24,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-12-09 05:10:24,597 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:10:24,597 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:10:24,798 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 05:10:24,798 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:10:24,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:10:24,800 INFO L82 PathProgramCache]: Analyzing trace with hash 54086239, now seen corresponding path program 1 times [2020-12-09 05:10:24,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:10:24,801 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682491084] [2020-12-09 05:10:24,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:10:24,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:10:25,001 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:10:25,001 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682491084] [2020-12-09 05:10:25,001 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:10:25,001 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 05:10:25,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869605066] [2020-12-09 05:10:25,002 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 05:10:25,002 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:10:25,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 05:10:25,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 05:10:25,003 INFO L87 Difference]: Start difference. First operand 483 states and 553 transitions. Second operand 5 states. [2020-12-09 05:10:25,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:10:25,409 INFO L93 Difference]: Finished difference Result 1066 states and 1210 transitions. [2020-12-09 05:10:25,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 05:10:25,409 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 113 [2020-12-09 05:10:25,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:10:25,412 INFO L225 Difference]: With dead ends: 1066 [2020-12-09 05:10:25,412 INFO L226 Difference]: Without dead ends: 584 [2020-12-09 05:10:25,413 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 [2020-12-09 05:10:25,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2020-12-09 05:10:25,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 483. [2020-12-09 05:10:25,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 483 states. [2020-12-09 05:10:25,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 549 transitions. [2020-12-09 05:10:25,421 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 549 transitions. Word has length 113 [2020-12-09 05:10:25,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:10:25,422 INFO L481 AbstractCegarLoop]: Abstraction has 483 states and 549 transitions. [2020-12-09 05:10:25,422 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 05:10:25,422 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 549 transitions. [2020-12-09 05:10:25,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-12-09 05:10:25,423 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:10:25,423 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:10:25,424 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-09 05:10:25,424 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:10:25,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:10:25,424 INFO L82 PathProgramCache]: Analyzing trace with hash 1130304085, now seen corresponding path program 1 times [2020-12-09 05:10:25,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:10:25,424 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698438668] [2020-12-09 05:10:25,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:10:25,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:10:25,483 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-09 05:10:25,483 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698438668] [2020-12-09 05:10:25,483 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:10:25,484 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 05:10:25,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189403] [2020-12-09 05:10:25,484 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 05:10:25,484 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:10:25,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 05:10:25,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 05:10:25,485 INFO L87 Difference]: Start difference. First operand 483 states and 549 transitions. Second operand 3 states. [2020-12-09 05:10:25,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:10:25,714 INFO L93 Difference]: Finished difference Result 1365 states and 1561 transitions. [2020-12-09 05:10:25,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 05:10:25,715 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 155 [2020-12-09 05:10:25,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:10:25,717 INFO L225 Difference]: With dead ends: 1365 [2020-12-09 05:10:25,717 INFO L226 Difference]: Without dead ends: 403 [2020-12-09 05:10:25,718 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 05:10:25,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2020-12-09 05:10:25,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 403. [2020-12-09 05:10:25,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2020-12-09 05:10:25,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 444 transitions. [2020-12-09 05:10:25,728 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 444 transitions. Word has length 155 [2020-12-09 05:10:25,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:10:25,728 INFO L481 AbstractCegarLoop]: Abstraction has 403 states and 444 transitions. [2020-12-09 05:10:25,728 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 05:10:25,728 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 444 transitions. [2020-12-09 05:10:25,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-12-09 05:10:25,729 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:10:25,729 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, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:10:25,730 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-09 05:10:25,730 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:10:25,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:10:25,730 INFO L82 PathProgramCache]: Analyzing trace with hash -183495657, now seen corresponding path program 1 times [2020-12-09 05:10:25,730 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:10:25,730 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117101010] [2020-12-09 05:10:25,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:10:25,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:10:25,803 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:10:25,803 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117101010] [2020-12-09 05:10:25,803 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:10:25,804 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 05:10:25,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455028518] [2020-12-09 05:10:25,804 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 05:10:25,804 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:10:25,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 05:10:25,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 05:10:25,805 INFO L87 Difference]: Start difference. First operand 403 states and 444 transitions. Second operand 3 states. [2020-12-09 05:10:25,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:10:25,981 INFO L93 Difference]: Finished difference Result 1045 states and 1145 transitions. [2020-12-09 05:10:25,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 05:10:25,981 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 183 [2020-12-09 05:10:25,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:10:25,984 INFO L225 Difference]: With dead ends: 1045 [2020-12-09 05:10:25,985 INFO L226 Difference]: Without dead ends: 563 [2020-12-09 05:10:25,986 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 05:10:25,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2020-12-09 05:10:25,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 563. [2020-12-09 05:10:25,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 563 states. [2020-12-09 05:10:26,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 606 transitions. [2020-12-09 05:10:26,001 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 606 transitions. Word has length 183 [2020-12-09 05:10:26,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:10:26,002 INFO L481 AbstractCegarLoop]: Abstraction has 563 states and 606 transitions. [2020-12-09 05:10:26,002 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 05:10:26,002 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 606 transitions. [2020-12-09 05:10:26,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-12-09 05:10:26,003 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:10:26,003 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:10:26,004 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-09 05:10:26,004 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:10:26,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:10:26,004 INFO L82 PathProgramCache]: Analyzing trace with hash -1012393363, now seen corresponding path program 1 times [2020-12-09 05:10:26,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:10:26,004 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812711157] [2020-12-09 05:10:26,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:10:26,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:10:26,113 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2020-12-09 05:10:26,113 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812711157] [2020-12-09 05:10:26,113 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:10:26,113 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 05:10:26,113 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776456486] [2020-12-09 05:10:26,114 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 05:10:26,114 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:10:26,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 05:10:26,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 05:10:26,114 INFO L87 Difference]: Start difference. First operand 563 states and 606 transitions. Second operand 3 states. [2020-12-09 05:10:26,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:10:26,199 INFO L93 Difference]: Finished difference Result 563 states and 606 transitions. [2020-12-09 05:10:26,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 05:10:26,199 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 200 [2020-12-09 05:10:26,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:10:26,200 INFO L225 Difference]: With dead ends: 563 [2020-12-09 05:10:26,200 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 05:10:26,200 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 [2020-12-09 05:10:26,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 05:10:26,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 05:10:26,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 05:10:26,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 05:10:26,201 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 200 [2020-12-09 05:10:26,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:10:26,201 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 05:10:26,201 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 05:10:26,201 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 05:10:26,201 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 05:10:26,201 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-09 05:10:26,203 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 05:10:26,374 INFO L262 CegarLoopResult]: For program point L565-1(lines 39 608) no Hoare annotation was computed. [2020-12-09 05:10:26,375 INFO L262 CegarLoopResult]: For program point L301(lines 301 423) no Hoare annotation was computed. [2020-12-09 05:10:26,375 INFO L262 CegarLoopResult]: For program point L235(lines 235 423) no Hoare annotation was computed. [2020-12-09 05:10:26,375 INFO L262 CegarLoopResult]: For program point L169(lines 169 423) no Hoare annotation was computed. [2020-12-09 05:10:26,375 INFO L262 CegarLoopResult]: For program point L566(line 566) no Hoare annotation was computed. [2020-12-09 05:10:26,375 INFO L262 CegarLoopResult]: For program point L303(lines 303 423) no Hoare annotation was computed. [2020-12-09 05:10:26,375 INFO L262 CegarLoopResult]: For program point L105(lines 105 423) no Hoare annotation was computed. [2020-12-09 05:10:26,375 INFO L262 CegarLoopResult]: For program point L40(lines 40 423) no Hoare annotation was computed. [2020-12-09 05:10:26,375 INFO L262 CegarLoopResult]: For program point L371(lines 371 423) no Hoare annotation was computed. [2020-12-09 05:10:26,375 INFO L262 CegarLoopResult]: For program point L307(lines 307 423) no Hoare annotation was computed. [2020-12-09 05:10:26,375 INFO L262 CegarLoopResult]: For program point L175(lines 175 423) no Hoare annotation was computed. [2020-12-09 05:10:26,375 INFO L262 CegarLoopResult]: For program point L109(lines 109 423) no Hoare annotation was computed. [2020-12-09 05:10:26,376 INFO L262 CegarLoopResult]: For program point L242(lines 242 423) no Hoare annotation was computed. [2020-12-09 05:10:26,376 INFO L262 CegarLoopResult]: For program point L45(lines 45 423) no Hoare annotation was computed. [2020-12-09 05:10:26,376 INFO L262 CegarLoopResult]: For program point L244(lines 244 423) no Hoare annotation was computed. [2020-12-09 05:10:26,376 INFO L262 CegarLoopResult]: For program point L179(lines 179 423) no Hoare annotation was computed. [2020-12-09 05:10:26,376 INFO L262 CegarLoopResult]: For program point L378(lines 378 423) no Hoare annotation was computed. [2020-12-09 05:10:26,376 INFO L262 CegarLoopResult]: For program point L48(lines 48 423) no Hoare annotation was computed. [2020-12-09 05:10:26,376 INFO L262 CegarLoopResult]: For program point L247(lines 247 423) no Hoare annotation was computed. [2020-12-09 05:10:26,376 INFO L262 CegarLoopResult]: For program point L116(lines 116 423) no Hoare annotation was computed. [2020-12-09 05:10:26,376 INFO L262 CegarLoopResult]: For program point L52(lines 52 423) no Hoare annotation was computed. [2020-12-09 05:10:26,376 INFO L262 CegarLoopResult]: For program point L185(lines 185 423) no Hoare annotation was computed. [2020-12-09 05:10:26,376 INFO L262 CegarLoopResult]: For program point L385(lines 385 423) no Hoare annotation was computed. [2020-12-09 05:10:26,376 INFO L262 CegarLoopResult]: For program point L319(lines 319 423) no Hoare annotation was computed. [2020-12-09 05:10:26,376 INFO L262 CegarLoopResult]: For program point L189(lines 189 423) no Hoare annotation was computed. [2020-12-09 05:10:26,376 INFO L262 CegarLoopResult]: For program point L123(lines 123 423) no Hoare annotation was computed. [2020-12-09 05:10:26,376 INFO L262 CegarLoopResult]: For program point L57(lines 57 423) no Hoare annotation was computed. [2020-12-09 05:10:26,377 INFO L262 CegarLoopResult]: For program point L388(lines 388 423) no Hoare annotation was computed. [2020-12-09 05:10:26,377 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 05:10:26,377 INFO L262 CegarLoopResult]: For program point L390(lines 390 423) no Hoare annotation was computed. [2020-12-09 05:10:26,377 INFO L262 CegarLoopResult]: For program point L324(lines 324 423) no Hoare annotation was computed. [2020-12-09 05:10:26,377 INFO L262 CegarLoopResult]: For program point L258(lines 258 423) no Hoare annotation was computed. [2020-12-09 05:10:26,377 INFO L262 CegarLoopResult]: For program point L60(lines 60 423) no Hoare annotation was computed. [2020-12-09 05:10:26,377 INFO L262 CegarLoopResult]: For program point L195(lines 195 423) no Hoare annotation was computed. [2020-12-09 05:10:26,377 INFO L262 CegarLoopResult]: For program point L129(lines 129 423) no Hoare annotation was computed. [2020-12-09 05:10:26,377 INFO L262 CegarLoopResult]: For program point L64(lines 64 423) no Hoare annotation was computed. [2020-12-09 05:10:26,377 INFO L262 CegarLoopResult]: For program point L263(lines 263 423) no Hoare annotation was computed. [2020-12-09 05:10:26,377 INFO L262 CegarLoopResult]: For program point L197(lines 197 423) no Hoare annotation was computed. [2020-12-09 05:10:26,377 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 566) no Hoare annotation was computed. [2020-12-09 05:10:26,377 INFO L262 CegarLoopResult]: For program point L199(lines 199 423) no Hoare annotation was computed. [2020-12-09 05:10:26,377 INFO L262 CegarLoopResult]: For program point L133(lines 133 423) no Hoare annotation was computed. [2020-12-09 05:10:26,377 INFO L262 CegarLoopResult]: For program point L399(lines 399 423) no Hoare annotation was computed. [2020-12-09 05:10:26,377 INFO L262 CegarLoopResult]: For program point L201(lines 201 423) no Hoare annotation was computed. [2020-12-09 05:10:26,377 INFO L262 CegarLoopResult]: For program point L69(lines 69 423) no Hoare annotation was computed. [2020-12-09 05:10:26,377 INFO L262 CegarLoopResult]: For program point L269(lines 269 423) no Hoare annotation was computed. [2020-12-09 05:10:26,377 INFO L262 CegarLoopResult]: For program point L204(lines 204 423) no Hoare annotation was computed. [2020-12-09 05:10:26,377 INFO L262 CegarLoopResult]: For program point L271(lines 271 423) no Hoare annotation was computed. [2020-12-09 05:10:26,377 INFO L262 CegarLoopResult]: For program point L404(lines 404 423) no Hoare annotation was computed. [2020-12-09 05:10:26,378 INFO L262 CegarLoopResult]: For program point L338(lines 338 423) no Hoare annotation was computed. [2020-12-09 05:10:26,378 INFO L262 CegarLoopResult]: For program point L140(lines 140 423) no Hoare annotation was computed. [2020-12-09 05:10:26,378 INFO L262 CegarLoopResult]: For program point L75(lines 75 423) no Hoare annotation was computed. [2020-12-09 05:10:26,378 INFO L262 CegarLoopResult]: For program point L208(lines 208 423) no Hoare annotation was computed. [2020-12-09 05:10:26,378 INFO L262 CegarLoopResult]: For program point L341(lines 341 423) no Hoare annotation was computed. [2020-12-09 05:10:26,378 INFO L262 CegarLoopResult]: For program point L408(lines 408 423) no Hoare annotation was computed. [2020-12-09 05:10:26,378 INFO L262 CegarLoopResult]: For program point L144(lines 144 423) no Hoare annotation was computed. [2020-12-09 05:10:26,378 INFO L258 CegarLoopResult]: At program point L607(lines 39 608) the Hoare annotation is: (let ((.cse1 (<= ~a17~0 8)) (.cse2 (<= ~a28~0 10)) (.cse0 (= ~a19~0 1)) (.cse3 (= ~a25~0 1)) (.cse4 (= ~a11~0 1))) (or (and .cse0 (<= 10 ~a28~0) .cse1 .cse2) (and .cse0 .cse3 (<= ~a28~0 7) .cse1) (and .cse1 .cse4 .cse2) (and (<= 8 ~a17~0) .cse1 .cse2) (and .cse0 (= ~a21~0 1) (= ~a17~0 8) .cse3 (not .cse4) (= ~a28~0 11)))) [2020-12-09 05:10:26,378 INFO L262 CegarLoopResult]: For program point L79(lines 79 423) no Hoare annotation was computed. [2020-12-09 05:10:26,378 INFO L262 CegarLoopResult]: For program point L212(lines 212 423) no Hoare annotation was computed. [2020-12-09 05:10:26,378 INFO L265 CegarLoopResult]: At program point L610(lines 610 627) the Hoare annotation is: true [2020-12-09 05:10:26,378 INFO L262 CegarLoopResult]: For program point L412(lines 412 423) no Hoare annotation was computed. [2020-12-09 05:10:26,378 INFO L262 CegarLoopResult]: For program point L347(lines 347 423) no Hoare annotation was computed. [2020-12-09 05:10:26,378 INFO L262 CegarLoopResult]: For program point L149(lines 149 423) no Hoare annotation was computed. [2020-12-09 05:10:26,378 INFO L262 CegarLoopResult]: For program point L414(lines 414 423) no Hoare annotation was computed. [2020-12-09 05:10:26,378 INFO L262 CegarLoopResult]: For program point L84(lines 84 423) no Hoare annotation was computed. [2020-12-09 05:10:26,378 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 05:10:26,378 INFO L262 CegarLoopResult]: For program point L417(lines 417 423) no Hoare annotation was computed. [2020-12-09 05:10:26,379 INFO L262 CegarLoopResult]: For program point L153(lines 153 423) no Hoare annotation was computed. [2020-12-09 05:10:26,379 INFO L258 CegarLoopResult]: At program point L616-2(lines 616 626) the Hoare annotation is: (let ((.cse1 (<= ~a17~0 8)) (.cse2 (<= ~a28~0 10)) (.cse0 (= ~a19~0 1)) (.cse3 (= ~a25~0 1)) (.cse4 (= ~a11~0 1))) (or (and .cse0 (<= 10 ~a28~0) .cse1 .cse2) (and .cse0 .cse3 (<= ~a28~0 7) .cse1) (and .cse1 .cse4 .cse2) (and (<= 8 ~a17~0) .cse1 .cse2) (and .cse0 (= ~a21~0 1) (= ~a17~0 8) .cse3 (not .cse4) (= ~a28~0 11)))) [2020-12-09 05:10:26,379 INFO L262 CegarLoopResult]: For program point L286(lines 286 423) no Hoare annotation was computed. [2020-12-09 05:10:26,379 INFO L262 CegarLoopResult]: For program point L419(lines 419 423) no Hoare annotation was computed. [2020-12-09 05:10:26,379 INFO L262 CegarLoopResult]: For program point L222(lines 222 423) no Hoare annotation was computed. [2020-12-09 05:10:26,379 INFO L262 CegarLoopResult]: For program point L290(lines 290 423) no Hoare annotation was computed. [2020-12-09 05:10:26,379 INFO L262 CegarLoopResult]: For program point L158(lines 158 423) no Hoare annotation was computed. [2020-12-09 05:10:26,379 INFO L262 CegarLoopResult]: For program point L92(lines 92 423) no Hoare annotation was computed. [2020-12-09 05:10:26,379 INFO L262 CegarLoopResult]: For program point L621(line 621) no Hoare annotation was computed. [2020-12-09 05:10:26,379 INFO L262 CegarLoopResult]: For program point L225(lines 225 423) no Hoare annotation was computed. [2020-12-09 05:10:26,379 INFO L262 CegarLoopResult]: For program point L359(lines 359 423) no Hoare annotation was computed. [2020-12-09 05:10:26,379 INFO L262 CegarLoopResult]: For program point L293(lines 293 423) no Hoare annotation was computed. [2020-12-09 05:10:26,379 INFO L262 CegarLoopResult]: For program point L228(lines 228 423) no Hoare annotation was computed. [2020-12-09 05:10:26,379 INFO L262 CegarLoopResult]: For program point L296(lines 296 423) no Hoare annotation was computed. [2020-12-09 05:10:26,379 INFO L262 CegarLoopResult]: For program point L164(lines 164 423) no Hoare annotation was computed. [2020-12-09 05:10:26,379 INFO L262 CegarLoopResult]: For program point L562-1(lines 39 608) no Hoare annotation was computed. [2020-12-09 05:10:26,379 INFO L262 CegarLoopResult]: For program point L364(lines 364 423) no Hoare annotation was computed. [2020-12-09 05:10:26,379 INFO L262 CegarLoopResult]: For program point L233(lines 233 423) no Hoare annotation was computed. [2020-12-09 05:10:26,379 INFO L262 CegarLoopResult]: For program point L101(lines 101 423) no Hoare annotation was computed. [2020-12-09 05:10:26,393 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 05:10:26 BoogieIcfgContainer [2020-12-09 05:10:26,393 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 05:10:26,394 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 05:10:26,394 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 05:10:26,394 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 05:10:26,395 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:10:22" (3/4) ... [2020-12-09 05:10:26,397 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 05:10:26,418 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 113 nodes and edges [2020-12-09 05:10:26,420 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2020-12-09 05:10:26,421 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-12-09 05:10:26,423 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-12-09 05:10:26,526 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_f5b53058-b0ed-4fa3-807e-f07ae86d2b16/bin/utaipan/witness.graphml [2020-12-09 05:10:26,526 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 05:10:26,527 INFO L168 Benchmark]: Toolchain (without parser) took 6272.12 ms. Allocated memory was 81.8 MB in the beginning and 211.8 MB in the end (delta: 130.0 MB). Free memory was 59.6 MB in the beginning and 121.3 MB in the end (delta: -61.7 MB). Peak memory consumption was 69.3 MB. Max. memory is 16.1 GB. [2020-12-09 05:10:26,528 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 81.8 MB. Free memory is still 57.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 05:10:26,528 INFO L168 Benchmark]: CACSL2BoogieTranslator took 323.85 ms. Allocated memory is still 81.8 MB. Free memory was 59.4 MB in the beginning and 54.2 MB in the end (delta: 5.2 MB). Peak memory consumption was 23.6 MB. Max. memory is 16.1 GB. [2020-12-09 05:10:26,528 INFO L168 Benchmark]: Boogie Procedure Inliner took 65.95 ms. Allocated memory is still 81.8 MB. Free memory was 54.2 MB in the beginning and 48.7 MB in the end (delta: 5.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-09 05:10:26,529 INFO L168 Benchmark]: Boogie Preprocessor took 55.42 ms. Allocated memory is still 81.8 MB. Free memory was 48.7 MB in the beginning and 44.4 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-09 05:10:26,529 INFO L168 Benchmark]: RCFGBuilder took 1332.44 ms. Allocated memory was 81.8 MB in the beginning and 121.6 MB in the end (delta: 39.8 MB). Free memory was 44.4 MB in the beginning and 51.0 MB in the end (delta: -6.6 MB). Peak memory consumption was 34.9 MB. Max. memory is 16.1 GB. [2020-12-09 05:10:26,529 INFO L168 Benchmark]: TraceAbstraction took 4357.10 ms. Allocated memory was 121.6 MB in the beginning and 211.8 MB in the end (delta: 90.2 MB). Free memory was 51.0 MB in the beginning and 136.0 MB in the end (delta: -85.1 MB). Peak memory consumption was 84.9 MB. Max. memory is 16.1 GB. [2020-12-09 05:10:26,530 INFO L168 Benchmark]: Witness Printer took 131.93 ms. Allocated memory is still 211.8 MB. Free memory was 136.0 MB in the beginning and 121.3 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-12-09 05:10:26,532 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 81.8 MB. Free memory is still 57.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 323.85 ms. Allocated memory is still 81.8 MB. Free memory was 59.4 MB in the beginning and 54.2 MB in the end (delta: 5.2 MB). Peak memory consumption was 23.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 65.95 ms. Allocated memory is still 81.8 MB. Free memory was 54.2 MB in the beginning and 48.7 MB in the end (delta: 5.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 55.42 ms. Allocated memory is still 81.8 MB. Free memory was 48.7 MB in the beginning and 44.4 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1332.44 ms. Allocated memory was 81.8 MB in the beginning and 121.6 MB in the end (delta: 39.8 MB). Free memory was 44.4 MB in the beginning and 51.0 MB in the end (delta: -6.6 MB). Peak memory consumption was 34.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4357.10 ms. Allocated memory was 121.6 MB in the beginning and 211.8 MB in the end (delta: 90.2 MB). Free memory was 51.0 MB in the beginning and 136.0 MB in the end (delta: -85.1 MB). Peak memory consumption was 84.9 MB. Max. memory is 16.1 GB. * Witness Printer took 131.93 ms. Allocated memory is still 211.8 MB. Free memory was 136.0 MB in the beginning and 121.3 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 566]: 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 && 10 <= a28) && a17 <= 8) && a28 <= 10) || (((a19 == 1 && a25 == 1) && a28 <= 7) && a17 <= 8)) || ((a17 <= 8 && a11 == 1) && a28 <= 10)) || ((8 <= a17 && a17 <= 8) && a28 <= 10)) || (((((a19 == 1 && a21 == 1) && a17 == 8) && a25 == 1) && !(a11 == 1)) && a28 == 11) - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: ((((((a19 == 1 && 10 <= a28) && a17 <= 8) && a28 <= 10) || (((a19 == 1 && a25 == 1) && a28 <= 7) && a17 <= 8)) || ((a17 <= 8 && a11 == 1) && a28 <= 10)) || ((8 <= a17 && a17 <= 8) && a28 <= 10)) || (((((a19 == 1 && a21 == 1) && a17 == 8) && a25 == 1) && !(a11 == 1)) && a28 == 11) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.1s, OverallIterations: 9, TraceHistogramMax: 4, AutomataDifference: 2.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 487 SDtfs, 609 SDslu, 58 SDs, 0 SdLazy, 2125 SolverSat, 470 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 239 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=563occurred 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: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 101 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 35 NumberOfFragments, 135 HoareAnnotationTreeSize, 3 FomulaSimplifications, 990 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 184 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 1245 NumberOfCodeBlocks, 1245 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 1341 ConstructedInterpolants, 0 QuantifiedInterpolants, 577477 SizeOfPredicates, 0 NumberOfNonLiveVariables, 296 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 11 InterpolantComputations, 10 PerfectInterpolantSequences, 591/607 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...