./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem02_label04.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_0163d6d5-2e3d-40eb-a5a3-93506397eaf5/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0163d6d5-2e3d-40eb-a5a3-93506397eaf5/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_0163d6d5-2e3d-40eb-a5a3-93506397eaf5/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0163d6d5-2e3d-40eb-a5a3-93506397eaf5/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem02_label04.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0163d6d5-2e3d-40eb-a5a3-93506397eaf5/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_0163d6d5-2e3d-40eb-a5a3-93506397eaf5/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 90b0cdc2fc90434e0a4f6271fb161422e9b25aee ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 02:26:24,463 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:26:24,466 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:26:24,497 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:26:24,498 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:26:24,499 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:26:24,501 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:26:24,504 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:26:24,506 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:26:24,508 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:26:24,509 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:26:24,510 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:26:24,511 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:26:24,512 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:26:24,514 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:26:24,515 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:26:24,516 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:26:24,518 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:26:24,520 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:26:24,522 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:26:24,525 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:26:24,526 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:26:24,528 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:26:24,529 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:26:24,532 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:26:24,533 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:26:24,533 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:26:24,535 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:26:24,535 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:26:24,537 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:26:24,537 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:26:24,538 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:26:24,539 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:26:24,540 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:26:24,542 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:26:24,542 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:26:24,543 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:26:24,543 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:26:24,544 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:26:24,545 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:26:24,546 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:26:24,547 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0163d6d5-2e3d-40eb-a5a3-93506397eaf5/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:26:24,573 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:26:24,573 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:26:24,574 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:26:24,575 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:26:24,575 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:26:24,575 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:26:24,575 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:26:24,575 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:26:24,576 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:26:24,576 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:26:24,576 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:26:24,576 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:26:24,577 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:26:24,577 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:26:24,577 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:26:24,578 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:26:24,578 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:26:24,578 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:26:24,578 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:26:24,579 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:26:24,579 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:26:24,579 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:26:24,579 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:26:24,579 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:26:24,580 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:26:24,580 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:26:24,580 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:26:24,580 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:26:24,580 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:26:24,581 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:26:24,581 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:26:24,581 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:26:24,581 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:26:24,582 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:26:24,582 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:26:24,582 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:26:24,582 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:26:24,582 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:26:24,583 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:26:24,583 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_0163d6d5-2e3d-40eb-a5a3-93506397eaf5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0163d6d5-2e3d-40eb-a5a3-93506397eaf5/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 90b0cdc2fc90434e0a4f6271fb161422e9b25aee [2021-10-11 02:26:24,895 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:26:24,934 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:26:24,937 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:26:24,938 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:26:24,940 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:26:24,941 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0163d6d5-2e3d-40eb-a5a3-93506397eaf5/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/eca-rers2012/Problem02_label04.c [2021-10-11 02:26:25,014 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0163d6d5-2e3d-40eb-a5a3-93506397eaf5/bin/utaipan-WLngWcDbfI/data/57a20f8d6/579da94b53aa43da8a01f17864f0676a/FLAGf625d20f6 [2021-10-11 02:26:25,584 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:26:25,584 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0163d6d5-2e3d-40eb-a5a3-93506397eaf5/sv-benchmarks/c/eca-rers2012/Problem02_label04.c [2021-10-11 02:26:25,599 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0163d6d5-2e3d-40eb-a5a3-93506397eaf5/bin/utaipan-WLngWcDbfI/data/57a20f8d6/579da94b53aa43da8a01f17864f0676a/FLAGf625d20f6 [2021-10-11 02:26:25,862 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0163d6d5-2e3d-40eb-a5a3-93506397eaf5/bin/utaipan-WLngWcDbfI/data/57a20f8d6/579da94b53aa43da8a01f17864f0676a [2021-10-11 02:26:25,864 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:26:25,866 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:26:25,868 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:26:25,868 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:26:25,871 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:26:25,872 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:26:25" (1/1) ... [2021-10-11 02:26:25,875 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3427001a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:25, skipping insertion in model container [2021-10-11 02:26:25,875 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:26:25" (1/1) ... [2021-10-11 02:26:25,882 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:26:25,960 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:26:26,285 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_0163d6d5-2e3d-40eb-a5a3-93506397eaf5/sv-benchmarks/c/eca-rers2012/Problem02_label04.c[17470,17483] [2021-10-11 02:26:26,337 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:26:26,346 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:26:26,458 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_0163d6d5-2e3d-40eb-a5a3-93506397eaf5/sv-benchmarks/c/eca-rers2012/Problem02_label04.c[17470,17483] [2021-10-11 02:26:26,475 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:26:26,490 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:26:26,490 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:26 WrapperNode [2021-10-11 02:26:26,490 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:26:26,492 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:26:26,492 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:26:26,492 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:26:26,513 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:26" (1/1) ... [2021-10-11 02:26:26,537 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:26" (1/1) ... [2021-10-11 02:26:26,620 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:26:26,621 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:26:26,621 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:26:26,621 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:26:26,645 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:26" (1/1) ... [2021-10-11 02:26:26,645 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:26" (1/1) ... [2021-10-11 02:26:26,658 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:26" (1/1) ... [2021-10-11 02:26:26,659 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:26" (1/1) ... [2021-10-11 02:26:26,702 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:26" (1/1) ... [2021-10-11 02:26:26,729 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:26" (1/1) ... [2021-10-11 02:26:26,735 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:26" (1/1) ... [2021-10-11 02:26:26,753 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:26:26,754 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:26:26,755 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:26:26,755 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:26:26,757 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:26" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0163d6d5-2e3d-40eb-a5a3-93506397eaf5/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 02:26:26,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:26:26,842 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:26:26,843 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:26:26,843 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:26:28,936 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:26:28,936 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-11 02:26:28,941 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:26:28 BoogieIcfgContainer [2021-10-11 02:26:28,942 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:26:28,945 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:26:28,945 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:26:28,949 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:26:28,949 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:26:25" (1/3) ... [2021-10-11 02:26:28,950 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68ff7a95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:26:28, skipping insertion in model container [2021-10-11 02:26:28,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:26" (2/3) ... [2021-10-11 02:26:28,951 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68ff7a95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:26:28, skipping insertion in model container [2021-10-11 02:26:28,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:26:28" (3/3) ... [2021-10-11 02:26:28,954 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem02_label04.c [2021-10-11 02:26:28,968 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:26:28,972 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:26:28,986 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 02:26:29,014 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:26:29,014 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:26:29,015 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:26:29,015 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:26:29,015 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:26:29,015 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:26:29,015 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:26:29,015 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:26:29,030 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states. [2021-10-11 02:26:29,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-10-11 02:26:29,038 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:29,039 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 02:26:29,040 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:26:29,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:29,045 INFO L82 PathProgramCache]: Analyzing trace with hash 925949065, now seen corresponding path program 1 times [2021-10-11 02:26:29,055 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:29,055 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866218415] [2021-10-11 02:26:29,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:29,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:29,400 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 02:26:29,400 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866218415] [2021-10-11 02:26:29,401 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:26:29,401 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:26:29,402 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92821786] [2021-10-11 02:26:29,407 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:26:29,408 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:29,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:26:29,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:26:29,427 INFO L87 Difference]: Start difference. First operand 85 states. Second operand 3 states. [2021-10-11 02:26:30,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:30,012 INFO L93 Difference]: Finished difference Result 251 states and 482 transitions. [2021-10-11 02:26:30,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:26:30,018 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2021-10-11 02:26:30,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:30,045 INFO L225 Difference]: With dead ends: 251 [2021-10-11 02:26:30,049 INFO L226 Difference]: Without dead ends: 163 [2021-10-11 02:26:30,054 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 02:26:30,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-10-11 02:26:30,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2021-10-11 02:26:30,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2021-10-11 02:26:30,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 313 transitions. [2021-10-11 02:26:30,136 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 313 transitions. Word has length 80 [2021-10-11 02:26:30,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:30,137 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 313 transitions. [2021-10-11 02:26:30,137 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:26:30,138 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 313 transitions. [2021-10-11 02:26:30,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-10-11 02:26:30,142 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:30,143 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 02:26:30,143 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:26:30,143 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:26:30,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:30,144 INFO L82 PathProgramCache]: Analyzing trace with hash -1427748143, now seen corresponding path program 1 times [2021-10-11 02:26:30,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:30,144 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314848043] [2021-10-11 02:26:30,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:30,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:30,262 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 02:26:30,263 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314848043] [2021-10-11 02:26:30,264 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:26:30,264 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:26:30,264 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96483958] [2021-10-11 02:26:30,266 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:26:30,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:30,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:26:30,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:26:30,269 INFO L87 Difference]: Start difference. First operand 163 states and 313 transitions. Second operand 3 states. [2021-10-11 02:26:30,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:30,483 INFO L93 Difference]: Finished difference Result 325 states and 625 transitions. [2021-10-11 02:26:30,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:26:30,484 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 91 [2021-10-11 02:26:30,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:30,489 INFO L225 Difference]: With dead ends: 325 [2021-10-11 02:26:30,490 INFO L226 Difference]: Without dead ends: 163 [2021-10-11 02:26:30,492 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 02:26:30,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-10-11 02:26:30,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2021-10-11 02:26:30,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2021-10-11 02:26:30,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 283 transitions. [2021-10-11 02:26:30,520 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 283 transitions. Word has length 91 [2021-10-11 02:26:30,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:30,520 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 283 transitions. [2021-10-11 02:26:30,521 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:26:30,521 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 283 transitions. [2021-10-11 02:26:30,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-10-11 02:26:30,525 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:30,525 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:26:30,526 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:26:30,526 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:26:30,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:30,527 INFO L82 PathProgramCache]: Analyzing trace with hash 221749544, now seen corresponding path program 1 times [2021-10-11 02:26:30,527 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:30,527 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018488517] [2021-10-11 02:26:30,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:30,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:30,615 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:26:30,615 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018488517] [2021-10-11 02:26:30,616 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:26:30,616 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:26:30,616 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850468196] [2021-10-11 02:26:30,616 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:26:30,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:30,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:26:30,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:26:30,618 INFO L87 Difference]: Start difference. First operand 163 states and 283 transitions. Second operand 3 states. [2021-10-11 02:26:31,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:31,044 INFO L93 Difference]: Finished difference Result 485 states and 846 transitions. [2021-10-11 02:26:31,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:26:31,045 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 98 [2021-10-11 02:26:31,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:31,047 INFO L225 Difference]: With dead ends: 485 [2021-10-11 02:26:31,048 INFO L226 Difference]: Without dead ends: 323 [2021-10-11 02:26:31,049 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 02:26:31,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2021-10-11 02:26:31,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 243. [2021-10-11 02:26:31,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2021-10-11 02:26:31,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 373 transitions. [2021-10-11 02:26:31,059 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 373 transitions. Word has length 98 [2021-10-11 02:26:31,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:31,060 INFO L481 AbstractCegarLoop]: Abstraction has 243 states and 373 transitions. [2021-10-11 02:26:31,060 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:26:31,060 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 373 transitions. [2021-10-11 02:26:31,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-10-11 02:26:31,063 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:31,063 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:26:31,064 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 02:26:31,064 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:26:31,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:31,065 INFO L82 PathProgramCache]: Analyzing trace with hash -2134433599, now seen corresponding path program 1 times [2021-10-11 02:26:31,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:31,065 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508065137] [2021-10-11 02:26:31,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:31,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:31,149 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:26:31,150 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508065137] [2021-10-11 02:26:31,150 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:26:31,150 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:26:31,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476482476] [2021-10-11 02:26:31,152 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:26:31,152 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:31,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:26:31,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:26:31,153 INFO L87 Difference]: Start difference. First operand 243 states and 373 transitions. Second operand 3 states. [2021-10-11 02:26:31,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:31,601 INFO L93 Difference]: Finished difference Result 565 states and 885 transitions. [2021-10-11 02:26:31,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:26:31,602 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 103 [2021-10-11 02:26:31,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:31,608 INFO L225 Difference]: With dead ends: 565 [2021-10-11 02:26:31,609 INFO L226 Difference]: Without dead ends: 323 [2021-10-11 02:26:31,611 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:26:31,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2021-10-11 02:26:31,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2021-10-11 02:26:31,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2021-10-11 02:26:31,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 493 transitions. [2021-10-11 02:26:31,641 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 493 transitions. Word has length 103 [2021-10-11 02:26:31,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:31,642 INFO L481 AbstractCegarLoop]: Abstraction has 323 states and 493 transitions. [2021-10-11 02:26:31,642 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:26:31,642 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 493 transitions. [2021-10-11 02:26:31,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-10-11 02:26:31,646 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:31,646 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:26:31,646 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 02:26:31,646 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:26:31,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:31,647 INFO L82 PathProgramCache]: Analyzing trace with hash -2118176117, now seen corresponding path program 1 times [2021-10-11 02:26:31,648 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:31,648 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080127023] [2021-10-11 02:26:31,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:31,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:31,975 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 18 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:26:31,975 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080127023] [2021-10-11 02:26:31,975 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1612977071] [2021-10-11 02:26:31,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0163d6d5-2e3d-40eb-a5a3-93506397eaf5/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 02:26:32,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:32,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:26:32,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:26:32,372 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-10-11 02:26:32,372 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:26:32,552 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-10-11 02:26:32,554 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:26:32,554 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2021-10-11 02:26:32,554 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506247327] [2021-10-11 02:26:32,555 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:26:32,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:32,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:26:32,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:26:32,556 INFO L87 Difference]: Start difference. First operand 323 states and 493 transitions. Second operand 3 states. [2021-10-11 02:26:32,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:32,982 INFO L93 Difference]: Finished difference Result 885 states and 1336 transitions. [2021-10-11 02:26:32,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:26:32,982 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 107 [2021-10-11 02:26:32,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:32,986 INFO L225 Difference]: With dead ends: 885 [2021-10-11 02:26:32,986 INFO L226 Difference]: Without dead ends: 563 [2021-10-11 02:26:32,987 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 211 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:26:32,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2021-10-11 02:26:33,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 483. [2021-10-11 02:26:33,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 483 states. [2021-10-11 02:26:33,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 683 transitions. [2021-10-11 02:26:33,003 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 683 transitions. Word has length 107 [2021-10-11 02:26:33,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:33,004 INFO L481 AbstractCegarLoop]: Abstraction has 483 states and 683 transitions. [2021-10-11 02:26:33,004 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:26:33,004 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 683 transitions. [2021-10-11 02:26:33,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-10-11 02:26:33,006 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:33,006 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 02:26:33,220 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:26:33,220 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:26:33,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:33,221 INFO L82 PathProgramCache]: Analyzing trace with hash -440305195, now seen corresponding path program 1 times [2021-10-11 02:26:33,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:33,221 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151221235] [2021-10-11 02:26:33,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:33,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:33,295 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 02:26:33,298 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151221235] [2021-10-11 02:26:33,298 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:26:33,299 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:26:33,299 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902238511] [2021-10-11 02:26:33,299 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:26:33,299 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:33,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:26:33,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:26:33,300 INFO L87 Difference]: Start difference. First operand 483 states and 683 transitions. Second operand 3 states. [2021-10-11 02:26:33,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:33,717 INFO L93 Difference]: Finished difference Result 1205 states and 1716 transitions. [2021-10-11 02:26:33,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:26:33,718 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 111 [2021-10-11 02:26:33,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:33,723 INFO L225 Difference]: With dead ends: 1205 [2021-10-11 02:26:33,723 INFO L226 Difference]: Without dead ends: 723 [2021-10-11 02:26:33,724 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 02:26:33,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2021-10-11 02:26:33,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 723. [2021-10-11 02:26:33,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 723 states. [2021-10-11 02:26:33,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 954 transitions. [2021-10-11 02:26:33,743 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 954 transitions. Word has length 111 [2021-10-11 02:26:33,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:33,744 INFO L481 AbstractCegarLoop]: Abstraction has 723 states and 954 transitions. [2021-10-11 02:26:33,744 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:26:33,744 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 954 transitions. [2021-10-11 02:26:33,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-10-11 02:26:33,746 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:33,747 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:26:33,747 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-11 02:26:33,747 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:26:33,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:33,748 INFO L82 PathProgramCache]: Analyzing trace with hash -93021066, now seen corresponding path program 1 times [2021-10-11 02:26:33,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:33,748 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779604157] [2021-10-11 02:26:33,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:33,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:33,847 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-10-11 02:26:33,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779604157] [2021-10-11 02:26:33,848 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:26:33,848 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:26:33,848 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547653294] [2021-10-11 02:26:33,849 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:26:33,849 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:33,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:26:33,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:26:33,850 INFO L87 Difference]: Start difference. First operand 723 states and 954 transitions. Second operand 3 states. [2021-10-11 02:26:34,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:34,262 INFO L93 Difference]: Finished difference Result 1605 states and 2097 transitions. [2021-10-11 02:26:34,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:26:34,263 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 171 [2021-10-11 02:26:34,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:34,267 INFO L225 Difference]: With dead ends: 1605 [2021-10-11 02:26:34,268 INFO L226 Difference]: Without dead ends: 723 [2021-10-11 02:26:34,269 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:26:34,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2021-10-11 02:26:34,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 643. [2021-10-11 02:26:34,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 643 states. [2021-10-11 02:26:34,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 784 transitions. [2021-10-11 02:26:34,285 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 784 transitions. Word has length 171 [2021-10-11 02:26:34,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:34,285 INFO L481 AbstractCegarLoop]: Abstraction has 643 states and 784 transitions. [2021-10-11 02:26:34,286 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:26:34,286 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 784 transitions. [2021-10-11 02:26:34,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2021-10-11 02:26:34,289 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:34,289 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:26:34,289 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-11 02:26:34,289 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:26:34,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:34,290 INFO L82 PathProgramCache]: Analyzing trace with hash 1493878927, now seen corresponding path program 1 times [2021-10-11 02:26:34,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:34,291 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136600521] [2021-10-11 02:26:34,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:34,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:34,378 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-10-11 02:26:34,378 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136600521] [2021-10-11 02:26:34,379 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:26:34,379 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:26:34,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800856201] [2021-10-11 02:26:34,380 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:26:34,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:34,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:26:34,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:26:34,381 INFO L87 Difference]: Start difference. First operand 643 states and 784 transitions. Second operand 3 states. [2021-10-11 02:26:34,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:34,772 INFO L93 Difference]: Finished difference Result 1605 states and 1979 transitions. [2021-10-11 02:26:34,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:26:34,773 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 181 [2021-10-11 02:26:34,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:34,778 INFO L225 Difference]: With dead ends: 1605 [2021-10-11 02:26:34,779 INFO L226 Difference]: Without dead ends: 803 [2021-10-11 02:26:34,780 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:26:34,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2021-10-11 02:26:34,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 723. [2021-10-11 02:26:34,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 723 states. [2021-10-11 02:26:34,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 810 transitions. [2021-10-11 02:26:34,800 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 810 transitions. Word has length 181 [2021-10-11 02:26:34,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:34,800 INFO L481 AbstractCegarLoop]: Abstraction has 723 states and 810 transitions. [2021-10-11 02:26:34,800 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:26:34,800 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 810 transitions. [2021-10-11 02:26:34,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2021-10-11 02:26:34,803 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:34,804 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:26:34,804 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-11 02:26:34,804 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:26:34,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:34,805 INFO L82 PathProgramCache]: Analyzing trace with hash -2049370968, now seen corresponding path program 1 times [2021-10-11 02:26:34,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:34,810 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252460968] [2021-10-11 02:26:34,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:34,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:34,968 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 142 proven. 8 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2021-10-11 02:26:34,969 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252460968] [2021-10-11 02:26:34,969 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1837090486] [2021-10-11 02:26:34,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0163d6d5-2e3d-40eb-a5a3-93506397eaf5/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 02:26:35,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:35,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 02:26:35,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:26:35,391 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 150 proven. 0 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2021-10-11 02:26:35,391 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:26:35,635 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 150 proven. 0 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2021-10-11 02:26:35,636 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:26:35,641 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2021-10-11 02:26:35,642 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574254796] [2021-10-11 02:26:35,642 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:26:35,642 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:35,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:26:35,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:26:35,643 INFO L87 Difference]: Start difference. First operand 723 states and 810 transitions. Second operand 3 states. [2021-10-11 02:26:35,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:35,955 INFO L93 Difference]: Finished difference Result 1683 states and 1884 transitions. [2021-10-11 02:26:35,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:26:35,956 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 217 [2021-10-11 02:26:35,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:35,956 INFO L225 Difference]: With dead ends: 1683 [2021-10-11 02:26:35,956 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:26:35,958 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 432 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:26:35,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:26:35,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:26:35,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:26:35,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:26:35,961 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 217 [2021-10-11 02:26:35,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:35,961 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:26:35,962 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:26:35,962 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:26:35,963 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:26:36,176 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:26:36,177 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 02:26:36,333 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 25 [2021-10-11 02:26:36,410 INFO L262 CegarLoopResult]: For program point L499-1(lines 39 608) no Hoare annotation was computed. [2021-10-11 02:26:36,410 INFO L262 CegarLoopResult]: For program point L301(lines 301 423) no Hoare annotation was computed. [2021-10-11 02:26:36,410 INFO L262 CegarLoopResult]: For program point L235(lines 235 423) no Hoare annotation was computed. [2021-10-11 02:26:36,410 INFO L262 CegarLoopResult]: For program point L169(lines 169 423) no Hoare annotation was computed. [2021-10-11 02:26:36,411 INFO L262 CegarLoopResult]: For program point L500(line 500) no Hoare annotation was computed. [2021-10-11 02:26:36,411 INFO L262 CegarLoopResult]: For program point L303(lines 303 423) no Hoare annotation was computed. [2021-10-11 02:26:36,411 INFO L262 CegarLoopResult]: For program point L105(lines 105 423) no Hoare annotation was computed. [2021-10-11 02:26:36,411 INFO L262 CegarLoopResult]: For program point L40(lines 40 423) no Hoare annotation was computed. [2021-10-11 02:26:36,411 INFO L262 CegarLoopResult]: For program point L371(lines 371 423) no Hoare annotation was computed. [2021-10-11 02:26:36,411 INFO L262 CegarLoopResult]: For program point L307(lines 307 423) no Hoare annotation was computed. [2021-10-11 02:26:36,411 INFO L262 CegarLoopResult]: For program point L175(lines 175 423) no Hoare annotation was computed. [2021-10-11 02:26:36,411 INFO L262 CegarLoopResult]: For program point L109(lines 109 423) no Hoare annotation was computed. [2021-10-11 02:26:36,411 INFO L262 CegarLoopResult]: For program point L242(lines 242 423) no Hoare annotation was computed. [2021-10-11 02:26:36,411 INFO L262 CegarLoopResult]: For program point L45(lines 45 423) no Hoare annotation was computed. [2021-10-11 02:26:36,411 INFO L262 CegarLoopResult]: For program point L244(lines 244 423) no Hoare annotation was computed. [2021-10-11 02:26:36,411 INFO L262 CegarLoopResult]: For program point L179(lines 179 423) no Hoare annotation was computed. [2021-10-11 02:26:36,411 INFO L262 CegarLoopResult]: For program point L378(lines 378 423) no Hoare annotation was computed. [2021-10-11 02:26:36,411 INFO L262 CegarLoopResult]: For program point L48(lines 48 423) no Hoare annotation was computed. [2021-10-11 02:26:36,411 INFO L262 CegarLoopResult]: For program point L247(lines 247 423) no Hoare annotation was computed. [2021-10-11 02:26:36,411 INFO L262 CegarLoopResult]: For program point L116(lines 116 423) no Hoare annotation was computed. [2021-10-11 02:26:36,411 INFO L262 CegarLoopResult]: For program point L52(lines 52 423) no Hoare annotation was computed. [2021-10-11 02:26:36,411 INFO L262 CegarLoopResult]: For program point L185(lines 185 423) no Hoare annotation was computed. [2021-10-11 02:26:36,411 INFO L262 CegarLoopResult]: For program point L385(lines 385 423) no Hoare annotation was computed. [2021-10-11 02:26:36,412 INFO L262 CegarLoopResult]: For program point L319(lines 319 423) no Hoare annotation was computed. [2021-10-11 02:26:36,412 INFO L262 CegarLoopResult]: For program point L189(lines 189 423) no Hoare annotation was computed. [2021-10-11 02:26:36,412 INFO L262 CegarLoopResult]: For program point L123(lines 123 423) no Hoare annotation was computed. [2021-10-11 02:26:36,412 INFO L262 CegarLoopResult]: For program point L57(lines 57 423) no Hoare annotation was computed. [2021-10-11 02:26:36,412 INFO L262 CegarLoopResult]: For program point L388(lines 388 423) no Hoare annotation was computed. [2021-10-11 02:26:36,412 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 02:26:36,412 INFO L262 CegarLoopResult]: For program point L390(lines 390 423) no Hoare annotation was computed. [2021-10-11 02:26:36,412 INFO L262 CegarLoopResult]: For program point L324(lines 324 423) no Hoare annotation was computed. [2021-10-11 02:26:36,412 INFO L262 CegarLoopResult]: For program point L258(lines 258 423) no Hoare annotation was computed. [2021-10-11 02:26:36,412 INFO L262 CegarLoopResult]: For program point L60(lines 60 423) no Hoare annotation was computed. [2021-10-11 02:26:36,412 INFO L262 CegarLoopResult]: For program point L195(lines 195 423) no Hoare annotation was computed. [2021-10-11 02:26:36,412 INFO L262 CegarLoopResult]: For program point L129(lines 129 423) no Hoare annotation was computed. [2021-10-11 02:26:36,412 INFO L262 CegarLoopResult]: For program point L64(lines 64 423) no Hoare annotation was computed. [2021-10-11 02:26:36,412 INFO L262 CegarLoopResult]: For program point L263(lines 263 423) no Hoare annotation was computed. [2021-10-11 02:26:36,412 INFO L262 CegarLoopResult]: For program point L197(lines 197 423) no Hoare annotation was computed. [2021-10-11 02:26:36,412 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 500) no Hoare annotation was computed. [2021-10-11 02:26:36,412 INFO L262 CegarLoopResult]: For program point L199(lines 199 423) no Hoare annotation was computed. [2021-10-11 02:26:36,412 INFO L262 CegarLoopResult]: For program point L133(lines 133 423) no Hoare annotation was computed. [2021-10-11 02:26:36,413 INFO L262 CegarLoopResult]: For program point L399(lines 399 423) no Hoare annotation was computed. [2021-10-11 02:26:36,413 INFO L262 CegarLoopResult]: For program point L201(lines 201 423) no Hoare annotation was computed. [2021-10-11 02:26:36,413 INFO L262 CegarLoopResult]: For program point L69(lines 69 423) no Hoare annotation was computed. [2021-10-11 02:26:36,413 INFO L262 CegarLoopResult]: For program point L269(lines 269 423) no Hoare annotation was computed. [2021-10-11 02:26:36,413 INFO L262 CegarLoopResult]: For program point L204(lines 204 423) no Hoare annotation was computed. [2021-10-11 02:26:36,413 INFO L262 CegarLoopResult]: For program point L271(lines 271 423) no Hoare annotation was computed. [2021-10-11 02:26:36,413 INFO L262 CegarLoopResult]: For program point L404(lines 404 423) no Hoare annotation was computed. [2021-10-11 02:26:36,413 INFO L262 CegarLoopResult]: For program point L338(lines 338 423) no Hoare annotation was computed. [2021-10-11 02:26:36,413 INFO L262 CegarLoopResult]: For program point L140(lines 140 423) no Hoare annotation was computed. [2021-10-11 02:26:36,413 INFO L262 CegarLoopResult]: For program point L75(lines 75 423) no Hoare annotation was computed. [2021-10-11 02:26:36,413 INFO L262 CegarLoopResult]: For program point L208(lines 208 423) no Hoare annotation was computed. [2021-10-11 02:26:36,413 INFO L262 CegarLoopResult]: For program point L341(lines 341 423) no Hoare annotation was computed. [2021-10-11 02:26:36,413 INFO L262 CegarLoopResult]: For program point L408(lines 408 423) no Hoare annotation was computed. [2021-10-11 02:26:36,413 INFO L262 CegarLoopResult]: For program point L144(lines 144 423) no Hoare annotation was computed. [2021-10-11 02:26:36,414 INFO L258 CegarLoopResult]: At program point L607(lines 39 608) the Hoare annotation is: (let ((.cse0 (<= ~a17~0 7)) (.cse1 (<= ~a28~0 10)) (.cse3 (<= 8 ~a17~0)) (.cse4 (= ~a25~0 1)) (.cse2 (<= ~a17~0 8))) (or (and (<= 10 ~a28~0) .cse0 .cse1) (and (<= ~a19~0 0) .cse2 .cse1) (and .cse3 .cse2 .cse1) (and (<= ~a28~0 7) .cse2) (and .cse4 .cse0 .cse1) (and (= ~a19~0 1) .cse3 .cse4 .cse2))) [2021-10-11 02:26:36,414 INFO L262 CegarLoopResult]: For program point L79(lines 79 423) no Hoare annotation was computed. [2021-10-11 02:26:36,414 INFO L262 CegarLoopResult]: For program point L212(lines 212 423) no Hoare annotation was computed. [2021-10-11 02:26:36,414 INFO L265 CegarLoopResult]: At program point L610(lines 610 627) the Hoare annotation is: true [2021-10-11 02:26:36,414 INFO L262 CegarLoopResult]: For program point L412(lines 412 423) no Hoare annotation was computed. [2021-10-11 02:26:36,414 INFO L262 CegarLoopResult]: For program point L347(lines 347 423) no Hoare annotation was computed. [2021-10-11 02:26:36,414 INFO L262 CegarLoopResult]: For program point L149(lines 149 423) no Hoare annotation was computed. [2021-10-11 02:26:36,415 INFO L262 CegarLoopResult]: For program point L414(lines 414 423) no Hoare annotation was computed. [2021-10-11 02:26:36,415 INFO L262 CegarLoopResult]: For program point L84(lines 84 423) no Hoare annotation was computed. [2021-10-11 02:26:36,415 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 02:26:36,415 INFO L262 CegarLoopResult]: For program point L417(lines 417 423) no Hoare annotation was computed. [2021-10-11 02:26:36,415 INFO L262 CegarLoopResult]: For program point L153(lines 153 423) no Hoare annotation was computed. [2021-10-11 02:26:36,415 INFO L258 CegarLoopResult]: At program point L616-2(lines 616 626) the Hoare annotation is: (let ((.cse0 (<= ~a17~0 7)) (.cse1 (<= ~a28~0 10)) (.cse3 (<= 8 ~a17~0)) (.cse4 (= ~a25~0 1)) (.cse2 (<= ~a17~0 8))) (or (and (<= 10 ~a28~0) .cse0 .cse1) (and (<= ~a19~0 0) .cse2 .cse1) (and .cse3 .cse2 .cse1) (and (<= ~a28~0 7) .cse2) (and .cse4 .cse0 .cse1) (and (= ~a19~0 1) .cse3 .cse4 .cse2))) [2021-10-11 02:26:36,415 INFO L262 CegarLoopResult]: For program point L286(lines 286 423) no Hoare annotation was computed. [2021-10-11 02:26:36,416 INFO L262 CegarLoopResult]: For program point L419(lines 419 423) no Hoare annotation was computed. [2021-10-11 02:26:36,416 INFO L262 CegarLoopResult]: For program point L222(lines 222 423) no Hoare annotation was computed. [2021-10-11 02:26:36,416 INFO L262 CegarLoopResult]: For program point L290(lines 290 423) no Hoare annotation was computed. [2021-10-11 02:26:36,416 INFO L262 CegarLoopResult]: For program point L158(lines 158 423) no Hoare annotation was computed. [2021-10-11 02:26:36,416 INFO L262 CegarLoopResult]: For program point L92(lines 92 423) no Hoare annotation was computed. [2021-10-11 02:26:36,416 INFO L262 CegarLoopResult]: For program point L621(line 621) no Hoare annotation was computed. [2021-10-11 02:26:36,416 INFO L262 CegarLoopResult]: For program point L225(lines 225 423) no Hoare annotation was computed. [2021-10-11 02:26:36,416 INFO L262 CegarLoopResult]: For program point L359(lines 359 423) no Hoare annotation was computed. [2021-10-11 02:26:36,417 INFO L262 CegarLoopResult]: For program point L293(lines 293 423) no Hoare annotation was computed. [2021-10-11 02:26:36,417 INFO L262 CegarLoopResult]: For program point L228(lines 228 423) no Hoare annotation was computed. [2021-10-11 02:26:36,417 INFO L262 CegarLoopResult]: For program point L296(lines 296 423) no Hoare annotation was computed. [2021-10-11 02:26:36,417 INFO L262 CegarLoopResult]: For program point L164(lines 164 423) no Hoare annotation was computed. [2021-10-11 02:26:36,417 INFO L262 CegarLoopResult]: For program point L496-1(lines 39 608) no Hoare annotation was computed. [2021-10-11 02:26:36,417 INFO L262 CegarLoopResult]: For program point L364(lines 364 423) no Hoare annotation was computed. [2021-10-11 02:26:36,417 INFO L262 CegarLoopResult]: For program point L233(lines 233 423) no Hoare annotation was computed. [2021-10-11 02:26:36,417 INFO L262 CegarLoopResult]: For program point L101(lines 101 423) no Hoare annotation was computed. [2021-10-11 02:26:36,434 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:26:36 BoogieIcfgContainer [2021-10-11 02:26:36,434 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:26:36,435 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:26:36,435 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:26:36,435 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:26:36,436 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:26:28" (3/4) ... [2021-10-11 02:26:36,439 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:26:36,462 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 113 nodes and edges [2021-10-11 02:26:36,464 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2021-10-11 02:26:36,465 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2021-10-11 02:26:36,467 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-11 02:26:36,629 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0163d6d5-2e3d-40eb-a5a3-93506397eaf5/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:26:36,629 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:26:36,630 INFO L168 Benchmark]: Toolchain (without parser) took 10763.83 ms. Allocated memory was 81.8 MB in the beginning and 308.3 MB in the end (delta: 226.5 MB). Free memory was 44.9 MB in the beginning and 167.4 MB in the end (delta: -122.5 MB). Peak memory consumption was 104.8 MB. Max. memory is 16.1 GB. [2021-10-11 02:26:36,634 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 81.8 MB. Free memory was 63.4 MB in the beginning and 63.3 MB in the end (delta: 39.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:26:36,635 INFO L168 Benchmark]: CACSL2BoogieTranslator took 622.93 ms. Allocated memory was 81.8 MB in the beginning and 98.6 MB in the end (delta: 16.8 MB). Free memory was 44.7 MB in the beginning and 60.4 MB in the end (delta: -15.7 MB). Peak memory consumption was 4.3 MB. Max. memory is 16.1 GB. [2021-10-11 02:26:36,636 INFO L168 Benchmark]: Boogie Procedure Inliner took 128.84 ms. Allocated memory is still 98.6 MB. Free memory was 60.4 MB in the beginning and 55.0 MB in the end (delta: 5.4 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-11 02:26:36,636 INFO L168 Benchmark]: Boogie Preprocessor took 132.49 ms. Allocated memory is still 98.6 MB. Free memory was 55.0 MB in the beginning and 50.6 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:26:36,637 INFO L168 Benchmark]: RCFGBuilder took 2187.56 ms. Allocated memory was 98.6 MB in the beginning and 138.4 MB in the end (delta: 39.8 MB). Free memory was 50.6 MB in the beginning and 72.2 MB in the end (delta: -21.6 MB). Peak memory consumption was 40.8 MB. Max. memory is 16.1 GB. [2021-10-11 02:26:36,637 INFO L168 Benchmark]: TraceAbstraction took 7489.37 ms. Allocated memory was 138.4 MB in the beginning and 308.3 MB in the end (delta: 169.9 MB). Free memory was 72.2 MB in the beginning and 182.2 MB in the end (delta: -110.1 MB). Peak memory consumption was 59.8 MB. Max. memory is 16.1 GB. [2021-10-11 02:26:36,637 INFO L168 Benchmark]: Witness Printer took 194.54 ms. Allocated memory is still 308.3 MB. Free memory was 182.2 MB in the beginning and 167.4 MB in the end (delta: 14.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-10-11 02:26:36,639 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 81.8 MB. Free memory was 63.4 MB in the beginning and 63.3 MB in the end (delta: 39.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 622.93 ms. Allocated memory was 81.8 MB in the beginning and 98.6 MB in the end (delta: 16.8 MB). Free memory was 44.7 MB in the beginning and 60.4 MB in the end (delta: -15.7 MB). Peak memory consumption was 4.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 128.84 ms. Allocated memory is still 98.6 MB. Free memory was 60.4 MB in the beginning and 55.0 MB in the end (delta: 5.4 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 132.49 ms. Allocated memory is still 98.6 MB. Free memory was 55.0 MB in the beginning and 50.6 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2187.56 ms. Allocated memory was 98.6 MB in the beginning and 138.4 MB in the end (delta: 39.8 MB). Free memory was 50.6 MB in the beginning and 72.2 MB in the end (delta: -21.6 MB). Peak memory consumption was 40.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 7489.37 ms. Allocated memory was 138.4 MB in the beginning and 308.3 MB in the end (delta: 169.9 MB). Free memory was 72.2 MB in the beginning and 182.2 MB in the end (delta: -110.1 MB). Peak memory consumption was 59.8 MB. Max. memory is 16.1 GB. * Witness Printer took 194.54 ms. Allocated memory is still 308.3 MB. Free memory was 182.2 MB in the beginning and 167.4 MB in the end (delta: 14.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 500]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 610]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 616]: Loop Invariant Derived loop invariant: ((((((10 <= a28 && a17 <= 7) && a28 <= 10) || ((a19 <= 0 && a17 <= 8) && a28 <= 10)) || ((8 <= a17 && a17 <= 8) && a28 <= 10)) || (a28 <= 7 && a17 <= 8)) || ((a25 == 1 && a17 <= 7) && a28 <= 10)) || (((a19 == 1 && 8 <= a17) && a25 == 1) && a17 <= 8) - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: ((((((10 <= a28 && a17 <= 7) && a28 <= 10) || ((a19 <= 0 && a17 <= 8) && a28 <= 10)) || ((8 <= a17 && a17 <= 8) && a28 <= 10)) || (a28 <= 7 && a17 <= 8)) || ((a25 == 1 && a17 <= 7) && a28 <= 10)) || (((a19 == 1 && 8 <= a17) && a25 == 1) && a17 <= 8) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 7.1s, OverallIterations: 9, TraceHistogramMax: 7, AutomataDifference: 3.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 640 SDtfs, 563 SDslu, 40 SDs, 0 SdLazy, 1844 SolverSat, 491 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 669 GetRequests, 653 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=723occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 320 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 37 NumberOfFragments, 123 HoareAnnotationTreeSize, 3 FomulaSimplifications, 610 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 24 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 1483 NumberOfCodeBlocks, 1483 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 1794 ConstructedInterpolants, 0 QuantifiedInterpolants, 669196 SizeOfPredicates, 0 NumberOfNonLiveVariables, 748 ConjunctsInSsa, 5 ConjunctsInUnsatCore, 13 InterpolantComputations, 11 PerfectInterpolantSequences, 1494/1518 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...