./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem02_label03.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3120c514-c052-4a33-9c08-bebbd7d049d2/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3120c514-c052-4a33-9c08-bebbd7d049d2/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3120c514-c052-4a33-9c08-bebbd7d049d2/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3120c514-c052-4a33-9c08-bebbd7d049d2/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem02_label03.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3120c514-c052-4a33-9c08-bebbd7d049d2/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3120c514-c052-4a33-9c08-bebbd7d049d2/bin/utaipan-q2qaUkNPG8 --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 745ebb6547cb702820db2a03880b889e610b0b9a ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 06:56:54,426 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 06:56:54,428 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 06:56:54,475 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 06:56:54,476 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 06:56:54,480 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 06:56:54,482 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 06:56:54,484 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 06:56:54,486 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 06:56:54,487 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 06:56:54,488 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 06:56:54,490 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 06:56:54,490 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 06:56:54,492 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 06:56:54,493 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 06:56:54,495 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 06:56:54,496 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 06:56:54,502 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 06:56:54,504 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 06:56:54,509 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 06:56:54,515 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 06:56:54,517 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 06:56:54,518 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 06:56:54,523 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 06:56:54,527 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 06:56:54,529 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 06:56:54,529 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 06:56:54,530 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 06:56:54,532 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 06:56:54,533 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 06:56:54,535 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 06:56:54,536 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 06:56:54,538 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 06:56:54,539 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 06:56:54,540 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 06:56:54,541 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 06:56:54,541 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 06:56:54,542 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 06:56:54,542 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 06:56:54,543 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 06:56:54,544 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 06:56:54,545 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3120c514-c052-4a33-9c08-bebbd7d049d2/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-13 06:56:54,573 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 06:56:54,573 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 06:56:54,574 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 06:56:54,574 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 06:56:54,574 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 06:56:54,575 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 06:56:54,575 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 06:56:54,575 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 06:56:54,575 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 06:56:54,576 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 06:56:54,576 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 06:56:54,576 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 06:56:54,576 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 06:56:54,576 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 06:56:54,577 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 06:56:54,577 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 06:56:54,578 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 06:56:54,578 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 06:56:54,578 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 06:56:54,578 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 06:56:54,578 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 06:56:54,579 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 06:56:54,579 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 06:56:54,579 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 06:56:54,579 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 06:56:54,580 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 06:56:54,580 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 06:56:54,580 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 06:56:54,580 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 06:56:54,581 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 06:56:54,581 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 06:56:54,581 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 06:56:54,581 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 06:56:54,581 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 06:56:54,582 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 06:56:54,582 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 06:56:54,582 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 06:56:54,582 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 06:56:54,583 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 06:56:54,583 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_3120c514-c052-4a33-9c08-bebbd7d049d2/bin/utaipan-q2qaUkNPG8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3120c514-c052-4a33-9c08-bebbd7d049d2/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 745ebb6547cb702820db2a03880b889e610b0b9a [2021-10-13 06:56:54,869 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 06:56:54,892 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 06:56:54,895 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 06:56:54,897 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 06:56:54,898 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 06:56:54,899 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3120c514-c052-4a33-9c08-bebbd7d049d2/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/eca-rers2012/Problem02_label03.c [2021-10-13 06:56:54,989 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3120c514-c052-4a33-9c08-bebbd7d049d2/bin/utaipan-q2qaUkNPG8/data/d53caa79f/3356d5dcd8a7465a93b3379334232873/FLAGecd198ce6 [2021-10-13 06:56:55,539 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 06:56:55,539 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3120c514-c052-4a33-9c08-bebbd7d049d2/sv-benchmarks/c/eca-rers2012/Problem02_label03.c [2021-10-13 06:56:55,568 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3120c514-c052-4a33-9c08-bebbd7d049d2/bin/utaipan-q2qaUkNPG8/data/d53caa79f/3356d5dcd8a7465a93b3379334232873/FLAGecd198ce6 [2021-10-13 06:56:55,822 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3120c514-c052-4a33-9c08-bebbd7d049d2/bin/utaipan-q2qaUkNPG8/data/d53caa79f/3356d5dcd8a7465a93b3379334232873 [2021-10-13 06:56:55,825 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 06:56:55,827 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 06:56:55,832 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 06:56:55,832 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 06:56:55,836 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 06:56:55,837 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:56:55" (1/1) ... [2021-10-13 06:56:55,839 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6820f88d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:56:55, skipping insertion in model container [2021-10-13 06:56:55,841 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:56:55" (1/1) ... [2021-10-13 06:56:55,847 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 06:56:55,914 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 06:56:56,372 WARN L228 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_3120c514-c052-4a33-9c08-bebbd7d049d2/sv-benchmarks/c/eca-rers2012/Problem02_label03.c[20079,20092] [2021-10-13 06:56:56,387 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 06:56:56,397 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 06:56:56,500 WARN L228 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_3120c514-c052-4a33-9c08-bebbd7d049d2/sv-benchmarks/c/eca-rers2012/Problem02_label03.c[20079,20092] [2021-10-13 06:56:56,507 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 06:56:56,522 INFO L208 MainTranslator]: Completed translation [2021-10-13 06:56:56,522 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:56:56 WrapperNode [2021-10-13 06:56:56,523 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 06:56:56,524 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 06:56:56,524 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 06:56:56,524 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 06:56:56,538 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:56:56" (1/1) ... [2021-10-13 06:56:56,559 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:56:56" (1/1) ... [2021-10-13 06:56:56,625 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 06:56:56,625 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 06:56:56,626 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 06:56:56,626 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 06:56:56,635 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:56:56" (1/1) ... [2021-10-13 06:56:56,635 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:56:56" (1/1) ... [2021-10-13 06:56:56,641 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:56:56" (1/1) ... [2021-10-13 06:56:56,641 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:56:56" (1/1) ... [2021-10-13 06:56:56,667 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:56:56" (1/1) ... [2021-10-13 06:56:56,694 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:56:56" (1/1) ... [2021-10-13 06:56:56,699 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:56:56" (1/1) ... [2021-10-13 06:56:56,706 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 06:56:56,707 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 06:56:56,707 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 06:56:56,707 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 06:56:56,708 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:56:56" (1/1) ... [2021-10-13 06:56:56,716 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 06:56:56,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3120c514-c052-4a33-9c08-bebbd7d049d2/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 06:56:56,773 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3120c514-c052-4a33-9c08-bebbd7d049d2/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 06:56:56,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3120c514-c052-4a33-9c08-bebbd7d049d2/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 06:56:56,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 06:56:56,839 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 06:56:56,841 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 06:56:56,842 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 06:56:58,782 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 06:56:58,782 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-13 06:56:58,786 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:56:58 BoogieIcfgContainer [2021-10-13 06:56:58,786 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 06:56:58,790 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 06:56:58,790 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 06:56:58,793 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 06:56:58,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:56:55" (1/3) ... [2021-10-13 06:56:58,794 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@579f9556 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:56:58, skipping insertion in model container [2021-10-13 06:56:58,795 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:56:56" (2/3) ... [2021-10-13 06:56:58,795 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@579f9556 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:56:58, skipping insertion in model container [2021-10-13 06:56:58,795 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:56:58" (3/3) ... [2021-10-13 06:56:58,797 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem02_label03.c [2021-10-13 06:56:58,806 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 06:56:58,806 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 06:56:58,883 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 06:56:58,891 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 06:56:58,892 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 06:56:58,913 INFO L276 IsEmpty]: Start isEmpty. Operand has 85 states, 83 states have (on average 1.9518072289156627) internal successors, (162), 84 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:56:58,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-10-13 06:56:58,922 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:56:58,923 INFO L512 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] [2021-10-13 06:56:58,924 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 06:56:58,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:56:58,929 INFO L82 PathProgramCache]: Analyzing trace with hash 1814583831, now seen corresponding path program 1 times [2021-10-13 06:56:58,939 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 06:56:58,940 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100153661] [2021-10-13 06:56:58,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:56:58,941 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 06:56:59,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:56:59,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:56:59,343 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 06:56:59,343 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100153661] [2021-10-13 06:56:59,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100153661] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 06:56:59,344 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:56:59,345 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 06:56:59,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057851445] [2021-10-13 06:56:59,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 06:56:59,356 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 06:56:59,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 06:56:59,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 06:56:59,374 INFO L87 Difference]: Start difference. First operand has 85 states, 83 states have (on average 1.9518072289156627) internal successors, (162), 84 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:56:59,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:56:59,803 INFO L93 Difference]: Finished difference Result 251 states and 482 transitions. [2021-10-13 06:56:59,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 06:56:59,805 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-10-13 06:56:59,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:56:59,821 INFO L225 Difference]: With dead ends: 251 [2021-10-13 06:56:59,822 INFO L226 Difference]: Without dead ends: 163 [2021-10-13 06:56:59,826 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 06:56:59,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-10-13 06:56:59,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2021-10-13 06:56:59,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 162 states have (on average 1.5617283950617284) internal successors, (253), 162 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:56:59,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 253 transitions. [2021-10-13 06:56:59,906 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 253 transitions. Word has length 80 [2021-10-13 06:56:59,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:56:59,907 INFO L470 AbstractCegarLoop]: Abstraction has 163 states and 253 transitions. [2021-10-13 06:56:59,909 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:56:59,909 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 253 transitions. [2021-10-13 06:56:59,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-10-13 06:56:59,915 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:56:59,915 INFO L512 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1] [2021-10-13 06:56:59,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 06:56:59,915 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 06:56:59,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:56:59,920 INFO L82 PathProgramCache]: Analyzing trace with hash -483697094, now seen corresponding path program 1 times [2021-10-13 06:56:59,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 06:56:59,920 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142805432] [2021-10-13 06:56:59,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:56:59,921 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 06:56:59,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:57:00,120 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:57:00,121 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 06:57:00,121 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142805432] [2021-10-13 06:57:00,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142805432] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 06:57:00,121 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:57:00,122 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 06:57:00,122 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253945279] [2021-10-13 06:57:00,123 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 06:57:00,123 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 06:57:00,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 06:57:00,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 06:57:00,124 INFO L87 Difference]: Start difference. First operand 163 states and 253 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:57:00,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:57:00,505 INFO L93 Difference]: Finished difference Result 405 states and 661 transitions. [2021-10-13 06:57:00,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 06:57:00,505 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-10-13 06:57:00,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:57:00,508 INFO L225 Difference]: With dead ends: 405 [2021-10-13 06:57:00,508 INFO L226 Difference]: Without dead ends: 243 [2021-10-13 06:57:00,510 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 06:57:00,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2021-10-13 06:57:00,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 243. [2021-10-13 06:57:00,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 242 states have (on average 1.4793388429752066) internal successors, (358), 242 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:57:00,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 358 transitions. [2021-10-13 06:57:00,522 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 358 transitions. Word has length 85 [2021-10-13 06:57:00,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:57:00,526 INFO L470 AbstractCegarLoop]: Abstraction has 243 states and 358 transitions. [2021-10-13 06:57:00,526 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:57:00,527 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 358 transitions. [2021-10-13 06:57:00,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-10-13 06:57:00,531 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:57:00,531 INFO L512 BasicCegarLoop]: trace histogram [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, 1, 1, 1] [2021-10-13 06:57:00,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 06:57:00,532 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 06:57:00,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:57:00,534 INFO L82 PathProgramCache]: Analyzing trace with hash 2106958705, now seen corresponding path program 1 times [2021-10-13 06:57:00,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 06:57:00,536 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307122631] [2021-10-13 06:57:00,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:57:00,537 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 06:57:00,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:57:00,618 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:57:00,621 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 06:57:00,621 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307122631] [2021-10-13 06:57:00,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307122631] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 06:57:00,622 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:57:00,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 06:57:00,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871503478] [2021-10-13 06:57:00,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 06:57:00,626 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 06:57:00,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 06:57:00,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 06:57:00,628 INFO L87 Difference]: Start difference. First operand 243 states and 358 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:57:00,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:57:00,927 INFO L93 Difference]: Finished difference Result 725 states and 1071 transitions. [2021-10-13 06:57:00,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 06:57:00,928 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-10-13 06:57:00,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:57:00,931 INFO L225 Difference]: With dead ends: 725 [2021-10-13 06:57:00,931 INFO L226 Difference]: Without dead ends: 483 [2021-10-13 06:57:00,936 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 06:57:00,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2021-10-13 06:57:00,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 483. [2021-10-13 06:57:00,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 482 states have (on average 1.3983402489626555) internal successors, (674), 482 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:57:00,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 674 transitions. [2021-10-13 06:57:00,972 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 674 transitions. Word has length 95 [2021-10-13 06:57:00,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:57:00,973 INFO L470 AbstractCegarLoop]: Abstraction has 483 states and 674 transitions. [2021-10-13 06:57:00,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:57:00,973 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 674 transitions. [2021-10-13 06:57:00,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-10-13 06:57:00,977 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:57:00,978 INFO L512 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:57:00,978 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-13 06:57:00,978 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 06:57:00,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:57:00,979 INFO L82 PathProgramCache]: Analyzing trace with hash 1283769492, now seen corresponding path program 1 times [2021-10-13 06:57:00,979 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 06:57:00,979 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094370788] [2021-10-13 06:57:00,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:57:00,980 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 06:57:01,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:57:01,070 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:57:01,070 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 06:57:01,070 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094370788] [2021-10-13 06:57:01,071 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094370788] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 06:57:01,071 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:57:01,071 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 06:57:01,071 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386975015] [2021-10-13 06:57:01,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 06:57:01,072 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 06:57:01,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 06:57:01,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 06:57:01,073 INFO L87 Difference]: Start difference. First operand 483 states and 674 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:57:01,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:57:01,392 INFO L93 Difference]: Finished difference Result 1445 states and 2019 transitions. [2021-10-13 06:57:01,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 06:57:01,392 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-10-13 06:57:01,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:57:01,398 INFO L225 Difference]: With dead ends: 1445 [2021-10-13 06:57:01,398 INFO L226 Difference]: Without dead ends: 963 [2021-10-13 06:57:01,399 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 06:57:01,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2021-10-13 06:57:01,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 803. [2021-10-13 06:57:01,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 803 states, 802 states have (on average 1.3765586034912718) internal successors, (1104), 802 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:57:01,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1104 transitions. [2021-10-13 06:57:01,422 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1104 transitions. Word has length 110 [2021-10-13 06:57:01,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:57:01,423 INFO L470 AbstractCegarLoop]: Abstraction has 803 states and 1104 transitions. [2021-10-13 06:57:01,423 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:57:01,424 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1104 transitions. [2021-10-13 06:57:01,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-10-13 06:57:01,426 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:57:01,426 INFO L512 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:57:01,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-13 06:57:01,427 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 06:57:01,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:57:01,427 INFO L82 PathProgramCache]: Analyzing trace with hash 1413219721, now seen corresponding path program 1 times [2021-10-13 06:57:01,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 06:57:01,428 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618867130] [2021-10-13 06:57:01,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:57:01,428 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 06:57:01,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:57:01,592 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 06:57:01,592 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 06:57:01,593 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618867130] [2021-10-13 06:57:01,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618867130] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 06:57:01,593 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:57:01,593 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 06:57:01,593 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905340050] [2021-10-13 06:57:01,594 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 06:57:01,594 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 06:57:01,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 06:57:01,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 06:57:01,595 INFO L87 Difference]: Start difference. First operand 803 states and 1104 transitions. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:57:02,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:57:02,166 INFO L93 Difference]: Finished difference Result 1923 states and 2676 transitions. [2021-10-13 06:57:02,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 06:57:02,167 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-10-13 06:57:02,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:57:02,173 INFO L225 Difference]: With dead ends: 1923 [2021-10-13 06:57:02,174 INFO L226 Difference]: Without dead ends: 1043 [2021-10-13 06:57:02,175 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.1ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 06:57:02,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1043 states. [2021-10-13 06:57:02,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1043 to 803. [2021-10-13 06:57:02,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 803 states, 802 states have (on average 1.3690773067331672) internal successors, (1098), 802 states have internal predecessors, (1098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:57:02,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1098 transitions. [2021-10-13 06:57:02,200 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1098 transitions. Word has length 114 [2021-10-13 06:57:02,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:57:02,201 INFO L470 AbstractCegarLoop]: Abstraction has 803 states and 1098 transitions. [2021-10-13 06:57:02,201 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:57:02,201 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1098 transitions. [2021-10-13 06:57:02,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-10-13 06:57:02,204 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:57:02,204 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:57:02,205 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-13 06:57:02,205 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 06:57:02,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:57:02,205 INFO L82 PathProgramCache]: Analyzing trace with hash 228037299, now seen corresponding path program 1 times [2021-10-13 06:57:02,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 06:57:02,206 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234585036] [2021-10-13 06:57:02,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:57:02,206 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 06:57:02,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:57:02,280 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-10-13 06:57:02,280 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 06:57:02,280 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234585036] [2021-10-13 06:57:02,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234585036] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 06:57:02,281 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:57:02,281 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 06:57:02,281 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335816920] [2021-10-13 06:57:02,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 06:57:02,282 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 06:57:02,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 06:57:02,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 06:57:02,283 INFO L87 Difference]: Start difference. First operand 803 states and 1098 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:57:02,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:57:02,600 INFO L93 Difference]: Finished difference Result 1765 states and 2395 transitions. [2021-10-13 06:57:02,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 06:57:02,601 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 150 [2021-10-13 06:57:02,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:57:02,606 INFO L225 Difference]: With dead ends: 1765 [2021-10-13 06:57:02,606 INFO L226 Difference]: Without dead ends: 883 [2021-10-13 06:57:02,608 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 06:57:02,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 883 states. [2021-10-13 06:57:02,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 883 to 883. [2021-10-13 06:57:02,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 883 states, 882 states have (on average 1.217687074829932) internal successors, (1074), 882 states have internal predecessors, (1074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:57:02,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 1074 transitions. [2021-10-13 06:57:02,636 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 1074 transitions. Word has length 150 [2021-10-13 06:57:02,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:57:02,636 INFO L470 AbstractCegarLoop]: Abstraction has 883 states and 1074 transitions. [2021-10-13 06:57:02,637 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:57:02,637 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 1074 transitions. [2021-10-13 06:57:02,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-10-13 06:57:02,640 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:57:02,641 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:57:02,641 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-13 06:57:02,641 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 06:57:02,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:57:02,642 INFO L82 PathProgramCache]: Analyzing trace with hash 796302889, now seen corresponding path program 1 times [2021-10-13 06:57:02,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 06:57:02,647 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028823388] [2021-10-13 06:57:02,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:57:02,647 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 06:57:02,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:57:02,721 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-10-13 06:57:02,722 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 06:57:02,722 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028823388] [2021-10-13 06:57:02,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028823388] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 06:57:02,722 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:57:02,723 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 06:57:02,723 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671583370] [2021-10-13 06:57:02,723 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 06:57:02,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 06:57:02,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 06:57:02,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 06:57:02,725 INFO L87 Difference]: Start difference. First operand 883 states and 1074 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:57:03,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:57:03,030 INFO L93 Difference]: Finished difference Result 2165 states and 2596 transitions. [2021-10-13 06:57:03,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 06:57:03,031 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 154 [2021-10-13 06:57:03,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:57:03,037 INFO L225 Difference]: With dead ends: 2165 [2021-10-13 06:57:03,038 INFO L226 Difference]: Without dead ends: 1203 [2021-10-13 06:57:03,040 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 06:57:03,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1203 states. [2021-10-13 06:57:03,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1203 to 1123. [2021-10-13 06:57:03,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1123 states, 1122 states have (on average 1.1515151515151516) internal successors, (1292), 1122 states have internal predecessors, (1292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:57:03,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 1292 transitions. [2021-10-13 06:57:03,070 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 1292 transitions. Word has length 154 [2021-10-13 06:57:03,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:57:03,070 INFO L470 AbstractCegarLoop]: Abstraction has 1123 states and 1292 transitions. [2021-10-13 06:57:03,071 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:57:03,071 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 1292 transitions. [2021-10-13 06:57:03,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-10-13 06:57:03,075 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:57:03,075 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:57:03,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-13 06:57:03,076 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 06:57:03,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:57:03,076 INFO L82 PathProgramCache]: Analyzing trace with hash -464477940, now seen corresponding path program 1 times [2021-10-13 06:57:03,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 06:57:03,077 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115626388] [2021-10-13 06:57:03,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:57:03,077 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 06:57:03,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:57:03,290 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 68 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:57:03,291 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 06:57:03,291 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115626388] [2021-10-13 06:57:03,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115626388] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 06:57:03,291 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1116252936] [2021-10-13 06:57:03,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:57:03,292 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 06:57:03,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3120c514-c052-4a33-9c08-bebbd7d049d2/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 06:57:03,294 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3120c514-c052-4a33-9c08-bebbd7d049d2/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 06:57:03,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3120c514-c052-4a33-9c08-bebbd7d049d2/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-13 06:57:03,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:57:03,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 06:57:03,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 06:57:04,045 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-10-13 06:57:04,045 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 06:57:04,626 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-10-13 06:57:04,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1116252936] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 06:57:04,627 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-13 06:57:04,627 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2021-10-13 06:57:04,627 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704546250] [2021-10-13 06:57:04,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 06:57:04,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 06:57:04,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 06:57:04,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 06:57:04,629 INFO L87 Difference]: Start difference. First operand 1123 states and 1292 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:57:04,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:57:04,962 INFO L93 Difference]: Finished difference Result 2485 states and 2899 transitions. [2021-10-13 06:57:04,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 06:57:04,963 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 178 [2021-10-13 06:57:04,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:57:04,972 INFO L225 Difference]: With dead ends: 2485 [2021-10-13 06:57:04,972 INFO L226 Difference]: Without dead ends: 1363 [2021-10-13 06:57:04,974 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 353 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 27.0ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 06:57:04,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1363 states. [2021-10-13 06:57:05,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1363 to 1123. [2021-10-13 06:57:05,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1123 states, 1122 states have (on average 1.1568627450980393) internal successors, (1298), 1122 states have internal predecessors, (1298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:57:05,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 1298 transitions. [2021-10-13 06:57:05,010 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 1298 transitions. Word has length 178 [2021-10-13 06:57:05,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:57:05,011 INFO L470 AbstractCegarLoop]: Abstraction has 1123 states and 1298 transitions. [2021-10-13 06:57:05,011 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:57:05,012 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 1298 transitions. [2021-10-13 06:57:05,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2021-10-13 06:57:05,016 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:57:05,017 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:57:05,065 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3120c514-c052-4a33-9c08-bebbd7d049d2/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-13 06:57:05,237 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3120c514-c052-4a33-9c08-bebbd7d049d2/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 06:57:05,237 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 06:57:05,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:57:05,238 INFO L82 PathProgramCache]: Analyzing trace with hash -634565404, now seen corresponding path program 1 times [2021-10-13 06:57:05,238 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 06:57:05,238 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869685126] [2021-10-13 06:57:05,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:57:05,239 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 06:57:05,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:57:05,341 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 190 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-10-13 06:57:05,346 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 06:57:05,351 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869685126] [2021-10-13 06:57:05,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869685126] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 06:57:05,352 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:57:05,352 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 06:57:05,352 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307975576] [2021-10-13 06:57:05,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 06:57:05,355 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 06:57:05,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 06:57:05,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 06:57:05,356 INFO L87 Difference]: Start difference. First operand 1123 states and 1298 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:57:05,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:57:05,628 INFO L93 Difference]: Finished difference Result 2485 states and 2862 transitions. [2021-10-13 06:57:05,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 06:57:05,628 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 196 [2021-10-13 06:57:05,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:57:05,635 INFO L225 Difference]: With dead ends: 2485 [2021-10-13 06:57:05,635 INFO L226 Difference]: Without dead ends: 963 [2021-10-13 06:57:05,639 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 06:57:05,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2021-10-13 06:57:05,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 963. [2021-10-13 06:57:05,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 963 states, 962 states have (on average 1.1081081081081081) internal successors, (1066), 962 states have internal predecessors, (1066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:57:05,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1066 transitions. [2021-10-13 06:57:05,668 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1066 transitions. Word has length 196 [2021-10-13 06:57:05,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:57:05,668 INFO L470 AbstractCegarLoop]: Abstraction has 963 states and 1066 transitions. [2021-10-13 06:57:05,669 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:57:05,669 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1066 transitions. [2021-10-13 06:57:05,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2021-10-13 06:57:05,673 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:57:05,674 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 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] [2021-10-13 06:57:05,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-13 06:57:05,674 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 06:57:05,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:57:05,675 INFO L82 PathProgramCache]: Analyzing trace with hash 1733888017, now seen corresponding path program 1 times [2021-10-13 06:57:05,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 06:57:05,676 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091988136] [2021-10-13 06:57:05,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:57:05,676 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 06:57:05,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:57:05,806 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 231 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-10-13 06:57:05,813 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 06:57:05,813 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091988136] [2021-10-13 06:57:05,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091988136] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 06:57:05,814 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:57:05,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 06:57:05,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986361519] [2021-10-13 06:57:05,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 06:57:05,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 06:57:05,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 06:57:05,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 06:57:05,817 INFO L87 Difference]: Start difference. First operand 963 states and 1066 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:57:06,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:57:06,123 INFO L93 Difference]: Finished difference Result 2085 states and 2331 transitions. [2021-10-13 06:57:06,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 06:57:06,123 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 231 [2021-10-13 06:57:06,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:57:06,130 INFO L225 Difference]: With dead ends: 2085 [2021-10-13 06:57:06,131 INFO L226 Difference]: Without dead ends: 1123 [2021-10-13 06:57:06,132 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 06:57:06,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1123 states. [2021-10-13 06:57:06,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1123 to 1123. [2021-10-13 06:57:06,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1123 states, 1122 states have (on average 1.1024955436720143) internal successors, (1237), 1122 states have internal predecessors, (1237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:57:06,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 1237 transitions. [2021-10-13 06:57:06,165 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 1237 transitions. Word has length 231 [2021-10-13 06:57:06,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:57:06,166 INFO L470 AbstractCegarLoop]: Abstraction has 1123 states and 1237 transitions. [2021-10-13 06:57:06,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:57:06,167 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 1237 transitions. [2021-10-13 06:57:06,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2021-10-13 06:57:06,172 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:57:06,173 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-10-13 06:57:06,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-13 06:57:06,174 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 06:57:06,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:57:06,174 INFO L82 PathProgramCache]: Analyzing trace with hash -1262188532, now seen corresponding path program 1 times [2021-10-13 06:57:06,174 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 06:57:06,175 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914361749] [2021-10-13 06:57:06,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:57:06,175 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 06:57:06,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:57:06,324 INFO L134 CoverageAnalysis]: Checked inductivity of 419 backedges. 363 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-10-13 06:57:06,324 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 06:57:06,324 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914361749] [2021-10-13 06:57:06,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914361749] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 06:57:06,325 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:57:06,325 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 06:57:06,325 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995002837] [2021-10-13 06:57:06,326 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 06:57:06,326 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 06:57:06,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 06:57:06,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 06:57:06,327 INFO L87 Difference]: Start difference. First operand 1123 states and 1237 transitions. Second operand has 4 states, 4 states have (on average 53.75) internal successors, (215), 4 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:57:06,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:57:06,716 INFO L93 Difference]: Finished difference Result 2245 states and 2477 transitions. [2021-10-13 06:57:06,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 06:57:06,716 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.75) internal successors, (215), 4 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 254 [2021-10-13 06:57:06,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:57:06,724 INFO L225 Difference]: With dead ends: 2245 [2021-10-13 06:57:06,725 INFO L226 Difference]: Without dead ends: 1203 [2021-10-13 06:57:06,727 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.9ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 06:57:06,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1203 states. [2021-10-13 06:57:06,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1203 to 1203. [2021-10-13 06:57:06,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1203 states, 1202 states have (on average 1.0965058236272878) internal successors, (1318), 1202 states have internal predecessors, (1318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:57:06,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1203 states to 1203 states and 1318 transitions. [2021-10-13 06:57:06,799 INFO L78 Accepts]: Start accepts. Automaton has 1203 states and 1318 transitions. Word has length 254 [2021-10-13 06:57:06,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:57:06,800 INFO L470 AbstractCegarLoop]: Abstraction has 1203 states and 1318 transitions. [2021-10-13 06:57:06,800 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.75) internal successors, (215), 4 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:57:06,800 INFO L276 IsEmpty]: Start isEmpty. Operand 1203 states and 1318 transitions. [2021-10-13 06:57:06,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2021-10-13 06:57:06,809 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:57:06,810 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:57:06,810 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-13 06:57:06,810 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 06:57:06,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:57:06,811 INFO L82 PathProgramCache]: Analyzing trace with hash 1062975507, now seen corresponding path program 1 times [2021-10-13 06:57:06,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 06:57:06,812 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105107178] [2021-10-13 06:57:06,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:57:06,812 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 06:57:06,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:57:06,981 INFO L134 CoverageAnalysis]: Checked inductivity of 573 backedges. 330 proven. 0 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2021-10-13 06:57:06,982 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 06:57:06,982 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105107178] [2021-10-13 06:57:06,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105107178] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 06:57:06,983 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:57:06,985 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 06:57:06,985 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385582355] [2021-10-13 06:57:06,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 06:57:06,986 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 06:57:06,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 06:57:06,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 06:57:06,988 INFO L87 Difference]: Start difference. First operand 1203 states and 1318 transitions. Second operand has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:57:07,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:57:07,240 INFO L93 Difference]: Finished difference Result 2083 states and 2284 transitions. [2021-10-13 06:57:07,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 06:57:07,241 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 304 [2021-10-13 06:57:07,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:57:07,242 INFO L225 Difference]: With dead ends: 2083 [2021-10-13 06:57:07,242 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 06:57:07,244 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 06:57:07,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 06:57:07,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 06:57:07,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:57:07,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 06:57:07,245 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 304 [2021-10-13 06:57:07,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:57:07,245 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 06:57:07,245 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:57:07,246 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 06:57:07,246 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 06:57:07,248 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 06:57:07,249 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-13 06:57:07,251 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-13 06:57:07,255 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 06:57:07,284 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 06:57:07,284 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 06:57:07,620 INFO L857 garLoopResultBuilder]: For program point L565-1(lines 39 608) no Hoare annotation was computed. [2021-10-13 06:57:07,621 INFO L857 garLoopResultBuilder]: For program point L301(lines 301 423) no Hoare annotation was computed. [2021-10-13 06:57:07,621 INFO L857 garLoopResultBuilder]: For program point L235(lines 235 423) no Hoare annotation was computed. [2021-10-13 06:57:07,621 INFO L857 garLoopResultBuilder]: For program point L169(lines 169 423) no Hoare annotation was computed. [2021-10-13 06:57:07,621 INFO L857 garLoopResultBuilder]: For program point L303(lines 303 423) no Hoare annotation was computed. [2021-10-13 06:57:07,621 INFO L857 garLoopResultBuilder]: For program point L105(lines 105 423) no Hoare annotation was computed. [2021-10-13 06:57:07,621 INFO L857 garLoopResultBuilder]: For program point L568-1(lines 39 608) no Hoare annotation was computed. [2021-10-13 06:57:07,621 INFO L857 garLoopResultBuilder]: For program point L40(lines 40 423) no Hoare annotation was computed. [2021-10-13 06:57:07,622 INFO L857 garLoopResultBuilder]: For program point L569(line 569) no Hoare annotation was computed. [2021-10-13 06:57:07,622 INFO L857 garLoopResultBuilder]: For program point L371(lines 371 423) no Hoare annotation was computed. [2021-10-13 06:57:07,622 INFO L857 garLoopResultBuilder]: For program point L307(lines 307 423) no Hoare annotation was computed. [2021-10-13 06:57:07,622 INFO L857 garLoopResultBuilder]: For program point L175(lines 175 423) no Hoare annotation was computed. [2021-10-13 06:57:07,622 INFO L857 garLoopResultBuilder]: For program point L109(lines 109 423) no Hoare annotation was computed. [2021-10-13 06:57:07,622 INFO L857 garLoopResultBuilder]: For program point L242(lines 242 423) no Hoare annotation was computed. [2021-10-13 06:57:07,622 INFO L857 garLoopResultBuilder]: For program point L45(lines 45 423) no Hoare annotation was computed. [2021-10-13 06:57:07,623 INFO L857 garLoopResultBuilder]: For program point L244(lines 244 423) no Hoare annotation was computed. [2021-10-13 06:57:07,623 INFO L857 garLoopResultBuilder]: For program point L179(lines 179 423) no Hoare annotation was computed. [2021-10-13 06:57:07,623 INFO L857 garLoopResultBuilder]: For program point L378(lines 378 423) no Hoare annotation was computed. [2021-10-13 06:57:07,623 INFO L857 garLoopResultBuilder]: For program point L48(lines 48 423) no Hoare annotation was computed. [2021-10-13 06:57:07,623 INFO L857 garLoopResultBuilder]: For program point L247(lines 247 423) no Hoare annotation was computed. [2021-10-13 06:57:07,623 INFO L857 garLoopResultBuilder]: For program point L116(lines 116 423) no Hoare annotation was computed. [2021-10-13 06:57:07,623 INFO L857 garLoopResultBuilder]: For program point L52(lines 52 423) no Hoare annotation was computed. [2021-10-13 06:57:07,624 INFO L857 garLoopResultBuilder]: For program point L185(lines 185 423) no Hoare annotation was computed. [2021-10-13 06:57:07,624 INFO L857 garLoopResultBuilder]: For program point L385(lines 385 423) no Hoare annotation was computed. [2021-10-13 06:57:07,624 INFO L857 garLoopResultBuilder]: For program point L319(lines 319 423) no Hoare annotation was computed. [2021-10-13 06:57:07,624 INFO L857 garLoopResultBuilder]: For program point L189(lines 189 423) no Hoare annotation was computed. [2021-10-13 06:57:07,624 INFO L857 garLoopResultBuilder]: For program point L123(lines 123 423) no Hoare annotation was computed. [2021-10-13 06:57:07,624 INFO L857 garLoopResultBuilder]: For program point L57(lines 57 423) no Hoare annotation was computed. [2021-10-13 06:57:07,624 INFO L857 garLoopResultBuilder]: For program point L388(lines 388 423) no Hoare annotation was computed. [2021-10-13 06:57:07,625 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-13 06:57:07,625 INFO L857 garLoopResultBuilder]: For program point L390(lines 390 423) no Hoare annotation was computed. [2021-10-13 06:57:07,625 INFO L857 garLoopResultBuilder]: For program point L324(lines 324 423) no Hoare annotation was computed. [2021-10-13 06:57:07,625 INFO L857 garLoopResultBuilder]: For program point L258(lines 258 423) no Hoare annotation was computed. [2021-10-13 06:57:07,625 INFO L857 garLoopResultBuilder]: For program point L60(lines 60 423) no Hoare annotation was computed. [2021-10-13 06:57:07,625 INFO L857 garLoopResultBuilder]: For program point L195(lines 195 423) no Hoare annotation was computed. [2021-10-13 06:57:07,625 INFO L857 garLoopResultBuilder]: For program point L129(lines 129 423) no Hoare annotation was computed. [2021-10-13 06:57:07,626 INFO L857 garLoopResultBuilder]: For program point L64(lines 64 423) no Hoare annotation was computed. [2021-10-13 06:57:07,626 INFO L857 garLoopResultBuilder]: For program point L263(lines 263 423) no Hoare annotation was computed. [2021-10-13 06:57:07,626 INFO L857 garLoopResultBuilder]: For program point L197(lines 197 423) no Hoare annotation was computed. [2021-10-13 06:57:07,626 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 569) no Hoare annotation was computed. [2021-10-13 06:57:07,626 INFO L857 garLoopResultBuilder]: For program point L199(lines 199 423) no Hoare annotation was computed. [2021-10-13 06:57:07,626 INFO L857 garLoopResultBuilder]: For program point L133(lines 133 423) no Hoare annotation was computed. [2021-10-13 06:57:07,626 INFO L857 garLoopResultBuilder]: For program point L399(lines 399 423) no Hoare annotation was computed. [2021-10-13 06:57:07,627 INFO L857 garLoopResultBuilder]: For program point L201(lines 201 423) no Hoare annotation was computed. [2021-10-13 06:57:07,627 INFO L857 garLoopResultBuilder]: For program point L69(lines 69 423) no Hoare annotation was computed. [2021-10-13 06:57:07,627 INFO L857 garLoopResultBuilder]: For program point L269(lines 269 423) no Hoare annotation was computed. [2021-10-13 06:57:07,627 INFO L857 garLoopResultBuilder]: For program point L204(lines 204 423) no Hoare annotation was computed. [2021-10-13 06:57:07,627 INFO L857 garLoopResultBuilder]: For program point L271(lines 271 423) no Hoare annotation was computed. [2021-10-13 06:57:07,627 INFO L857 garLoopResultBuilder]: For program point L404(lines 404 423) no Hoare annotation was computed. [2021-10-13 06:57:07,627 INFO L857 garLoopResultBuilder]: For program point L338(lines 338 423) no Hoare annotation was computed. [2021-10-13 06:57:07,628 INFO L857 garLoopResultBuilder]: For program point L140(lines 140 423) no Hoare annotation was computed. [2021-10-13 06:57:07,628 INFO L857 garLoopResultBuilder]: For program point L75(lines 75 423) no Hoare annotation was computed. [2021-10-13 06:57:07,628 INFO L857 garLoopResultBuilder]: For program point L208(lines 208 423) no Hoare annotation was computed. [2021-10-13 06:57:07,628 INFO L857 garLoopResultBuilder]: For program point L341(lines 341 423) no Hoare annotation was computed. [2021-10-13 06:57:07,628 INFO L857 garLoopResultBuilder]: For program point L408(lines 408 423) no Hoare annotation was computed. [2021-10-13 06:57:07,628 INFO L857 garLoopResultBuilder]: For program point L144(lines 144 423) no Hoare annotation was computed. [2021-10-13 06:57:07,629 INFO L853 garLoopResultBuilder]: At program point L607(lines 39 608) the Hoare annotation is: (let ((.cse5 (not (= ~a11~0 1))) (.cse7 (= ~a19~0 1))) (let ((.cse3 (<= ~a17~0 7)) (.cse4 (<= ~a19~0 0)) (.cse6 (<= 10 ~a28~0)) (.cse0 (<= ~a28~0 10)) (.cse2 (= ~a25~0 1)) (.cse1 (or (and .cse7 .cse5) (and (= ~a17~0 8) (= ~a21~0 1) .cse7)))) (or (and (<= 9 ~a28~0) .cse0 .cse1) (and .cse2 .cse3 .cse4) (and .cse3 .cse5 .cse4) (and .cse6 .cse2 .cse7) (and (or .cse2 (<= ~a28~0 8)) .cse0 .cse5) (and .cse6 .cse4) (and .cse6 .cse0) (and .cse2 .cse1) (<= ~a28~0 7)))) [2021-10-13 06:57:07,629 INFO L857 garLoopResultBuilder]: For program point L79(lines 79 423) no Hoare annotation was computed. [2021-10-13 06:57:07,629 INFO L857 garLoopResultBuilder]: For program point L212(lines 212 423) no Hoare annotation was computed. [2021-10-13 06:57:07,629 INFO L860 garLoopResultBuilder]: At program point L610(lines 610 627) the Hoare annotation is: true [2021-10-13 06:57:07,629 INFO L857 garLoopResultBuilder]: For program point L412(lines 412 423) no Hoare annotation was computed. [2021-10-13 06:57:07,630 INFO L857 garLoopResultBuilder]: For program point L347(lines 347 423) no Hoare annotation was computed. [2021-10-13 06:57:07,630 INFO L857 garLoopResultBuilder]: For program point L149(lines 149 423) no Hoare annotation was computed. [2021-10-13 06:57:07,630 INFO L857 garLoopResultBuilder]: For program point L414(lines 414 423) no Hoare annotation was computed. [2021-10-13 06:57:07,630 INFO L857 garLoopResultBuilder]: For program point L84(lines 84 423) no Hoare annotation was computed. [2021-10-13 06:57:07,630 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-13 06:57:07,630 INFO L857 garLoopResultBuilder]: For program point L417(lines 417 423) no Hoare annotation was computed. [2021-10-13 06:57:07,630 INFO L857 garLoopResultBuilder]: For program point L153(lines 153 423) no Hoare annotation was computed. [2021-10-13 06:57:07,631 INFO L853 garLoopResultBuilder]: At program point L616-2(lines 616 626) the Hoare annotation is: (let ((.cse5 (not (= ~a11~0 1))) (.cse7 (= ~a19~0 1))) (let ((.cse3 (<= ~a17~0 7)) (.cse4 (<= ~a19~0 0)) (.cse6 (<= 10 ~a28~0)) (.cse0 (<= ~a28~0 10)) (.cse2 (= ~a25~0 1)) (.cse1 (or (and .cse7 .cse5) (and (= ~a17~0 8) (= ~a21~0 1) .cse7)))) (or (and (<= 9 ~a28~0) .cse0 .cse1) (and .cse2 .cse3 .cse4) (and .cse3 .cse5 .cse4) (and .cse6 .cse2 .cse7) (and (or .cse2 (<= ~a28~0 8)) .cse0 .cse5) (and .cse6 .cse4) (and .cse6 .cse0) (and .cse2 .cse1) (<= ~a28~0 7)))) [2021-10-13 06:57:07,631 INFO L857 garLoopResultBuilder]: For program point L286(lines 286 423) no Hoare annotation was computed. [2021-10-13 06:57:07,631 INFO L857 garLoopResultBuilder]: For program point L419(lines 419 423) no Hoare annotation was computed. [2021-10-13 06:57:07,631 INFO L857 garLoopResultBuilder]: For program point L222(lines 222 423) no Hoare annotation was computed. [2021-10-13 06:57:07,631 INFO L857 garLoopResultBuilder]: For program point L290(lines 290 423) no Hoare annotation was computed. [2021-10-13 06:57:07,631 INFO L857 garLoopResultBuilder]: For program point L158(lines 158 423) no Hoare annotation was computed. [2021-10-13 06:57:07,632 INFO L857 garLoopResultBuilder]: For program point L92(lines 92 423) no Hoare annotation was computed. [2021-10-13 06:57:07,632 INFO L857 garLoopResultBuilder]: For program point L621(line 621) no Hoare annotation was computed. [2021-10-13 06:57:07,632 INFO L857 garLoopResultBuilder]: For program point L225(lines 225 423) no Hoare annotation was computed. [2021-10-13 06:57:07,632 INFO L857 garLoopResultBuilder]: For program point L359(lines 359 423) no Hoare annotation was computed. [2021-10-13 06:57:07,632 INFO L857 garLoopResultBuilder]: For program point L293(lines 293 423) no Hoare annotation was computed. [2021-10-13 06:57:07,632 INFO L857 garLoopResultBuilder]: For program point L228(lines 228 423) no Hoare annotation was computed. [2021-10-13 06:57:07,632 INFO L857 garLoopResultBuilder]: For program point L296(lines 296 423) no Hoare annotation was computed. [2021-10-13 06:57:07,632 INFO L857 garLoopResultBuilder]: For program point L164(lines 164 423) no Hoare annotation was computed. [2021-10-13 06:57:07,633 INFO L857 garLoopResultBuilder]: For program point L364(lines 364 423) no Hoare annotation was computed. [2021-10-13 06:57:07,637 INFO L857 garLoopResultBuilder]: For program point L233(lines 233 423) no Hoare annotation was computed. [2021-10-13 06:57:07,637 INFO L857 garLoopResultBuilder]: For program point L101(lines 101 423) no Hoare annotation was computed. [2021-10-13 06:57:07,642 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 06:57:07,681 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 06:57:07 BoogieIcfgContainer [2021-10-13 06:57:07,681 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 06:57:07,682 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 06:57:07,682 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 06:57:07,682 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 06:57:07,683 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:56:58" (3/4) ... [2021-10-13 06:57:07,686 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 06:57:07,723 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 114 nodes and edges [2021-10-13 06:57:07,725 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2021-10-13 06:57:07,728 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2021-10-13 06:57:07,730 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 06:57:07,905 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3120c514-c052-4a33-9c08-bebbd7d049d2/bin/utaipan-q2qaUkNPG8/witness.graphml [2021-10-13 06:57:07,905 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 06:57:07,907 INFO L168 Benchmark]: Toolchain (without parser) took 12078.48 ms. Allocated memory was 111.1 MB in the beginning and 207.6 MB in the end (delta: 96.5 MB). Free memory was 72.8 MB in the beginning and 67.3 MB in the end (delta: 5.5 MB). Peak memory consumption was 103.6 MB. Max. memory is 16.1 GB. [2021-10-13 06:57:07,907 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 111.1 MB. Free memory is still 91.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 06:57:07,908 INFO L168 Benchmark]: CACSL2BoogieTranslator took 691.42 ms. Allocated memory is still 111.1 MB. Free memory was 72.6 MB in the beginning and 72.0 MB in the end (delta: 607.1 kB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 06:57:07,909 INFO L168 Benchmark]: Boogie Procedure Inliner took 101.03 ms. Allocated memory is still 111.1 MB. Free memory was 71.5 MB in the beginning and 66.3 MB in the end (delta: 5.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-13 06:57:07,909 INFO L168 Benchmark]: Boogie Preprocessor took 80.35 ms. Allocated memory is still 111.1 MB. Free memory was 66.3 MB in the beginning and 62.2 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-13 06:57:07,909 INFO L168 Benchmark]: RCFGBuilder took 2079.56 ms. Allocated memory is still 111.1 MB. Free memory was 62.2 MB in the beginning and 39.7 MB in the end (delta: 22.5 MB). Peak memory consumption was 30.0 MB. Max. memory is 16.1 GB. [2021-10-13 06:57:07,910 INFO L168 Benchmark]: TraceAbstraction took 8891.57 ms. Allocated memory was 111.1 MB in the beginning and 207.6 MB in the end (delta: 96.5 MB). Free memory was 39.7 MB in the beginning and 82.1 MB in the end (delta: -42.4 MB). Peak memory consumption was 52.6 MB. Max. memory is 16.1 GB. [2021-10-13 06:57:07,910 INFO L168 Benchmark]: Witness Printer took 223.47 ms. Allocated memory is still 207.6 MB. Free memory was 82.1 MB in the beginning and 67.3 MB in the end (delta: 14.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-10-13 06:57:07,913 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 111.1 MB. Free memory is still 91.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 691.42 ms. Allocated memory is still 111.1 MB. Free memory was 72.6 MB in the beginning and 72.0 MB in the end (delta: 607.1 kB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 101.03 ms. Allocated memory is still 111.1 MB. Free memory was 71.5 MB in the beginning and 66.3 MB in the end (delta: 5.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 80.35 ms. Allocated memory is still 111.1 MB. Free memory was 66.3 MB in the beginning and 62.2 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2079.56 ms. Allocated memory is still 111.1 MB. Free memory was 62.2 MB in the beginning and 39.7 MB in the end (delta: 22.5 MB). Peak memory consumption was 30.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 8891.57 ms. Allocated memory was 111.1 MB in the beginning and 207.6 MB in the end (delta: 96.5 MB). Free memory was 39.7 MB in the beginning and 82.1 MB in the end (delta: -42.4 MB). Peak memory consumption was 52.6 MB. Max. memory is 16.1 GB. * Witness Printer took 223.47 ms. Allocated memory is still 207.6 MB. Free memory was 82.1 MB in the beginning and 67.3 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: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 569]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 8761.1ms, OverallIterations: 12, TraceHistogramMax: 7, EmptinessCheckTime: 62.9ms, AutomataDifference: 4319.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 370.8ms, InitialAbstractionConstructionTime: 17.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 930 SDtfs, 633 SDslu, 70 SDs, 0 SdLazy, 2890 SolverSat, 721 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2930.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 390 GetRequests, 372 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 73.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=1203occurred in iteration=11, InterpolantAutomatonStates: 38, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 387.8ms AutomataMinimizationTime, 12 MinimizatonAttempts, 720 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 47 NumberOfFragments, 227 HoareAnnotationTreeSize, 3 FomulaSimplifications, 1252 FormulaSimplificationTreeSizeReduction, 58.1ms HoareSimplificationTime, 3 FomulaSimplificationsInter, 178 FormulaSimplificationTreeSizeReductionInter, 303.8ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 156.1ms SsaConstructionTime, 446.3ms SatisfiabilityAnalysisTime, 2423.9ms InterpolantComputationTime, 2129 NumberOfCodeBlocks, 2129 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 2293 ConstructedInterpolants, 0 QuantifiedInterpolants, 7445 SizeOfPredicates, 0 NumberOfNonLiveVariables, 368 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 14 InterpolantComputations, 13 PerfectInterpolantSequences, 2311/2369 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 616]: Loop Invariant Derived loop invariant: (((((((((9 <= a28 && a28 <= 10) && ((a19 == 1 && !(a11 == 1)) || ((a17 == 8 && a21 == 1) && a19 == 1))) || ((a25 == 1 && a17 <= 7) && a19 <= 0)) || ((a17 <= 7 && !(a11 == 1)) && a19 <= 0)) || ((10 <= a28 && a25 == 1) && a19 == 1)) || (((a25 == 1 || a28 <= 8) && a28 <= 10) && !(a11 == 1))) || (10 <= a28 && a19 <= 0)) || (10 <= a28 && a28 <= 10)) || (a25 == 1 && ((a19 == 1 && !(a11 == 1)) || ((a17 == 8 && a21 == 1) && a19 == 1)))) || a28 <= 7 - InvariantResult [Line: 610]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: (((((((((9 <= a28 && a28 <= 10) && ((a19 == 1 && !(a11 == 1)) || ((a17 == 8 && a21 == 1) && a19 == 1))) || ((a25 == 1 && a17 <= 7) && a19 <= 0)) || ((a17 <= 7 && !(a11 == 1)) && a19 <= 0)) || ((10 <= a28 && a25 == 1) && a19 == 1)) || (((a25 == 1 || a28 <= 8) && a28 <= 10) && !(a11 == 1))) || (10 <= a28 && a19 <= 0)) || (10 <= a28 && a28 <= 10)) || (a25 == 1 && ((a19 == 1 && !(a11 == 1)) || ((a17 == 8 && a21 == 1) && a19 == 1)))) || a28 <= 7 RESULT: Ultimate proved your program to be correct! [2021-10-13 06:57:07,973 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3120c514-c052-4a33-9c08-bebbd7d049d2/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...