./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label48.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47ba371-fd71-4658-89be-2134b23d321d/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47ba371-fd71-4658-89be-2134b23d321d/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47ba371-fd71-4658-89be-2134b23d321d/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47ba371-fd71-4658-89be-2134b23d321d/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label48.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47ba371-fd71-4658-89be-2134b23d321d/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47ba371-fd71-4658-89be-2134b23d321d/bin/utaipan-WLngWcDbfI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 40a1e4973a5bf53655cfcab4993cc11275e56426 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:25:55,410 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:25:55,412 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:25:55,444 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:25:55,445 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:25:55,446 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:25:55,448 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:25:55,450 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:25:55,452 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:25:55,453 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:25:55,454 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:25:55,456 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:25:55,456 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:25:55,458 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:25:55,459 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:25:55,460 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:25:55,461 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:25:55,462 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:25:55,464 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:25:55,467 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:25:55,468 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:25:55,470 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:25:55,471 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:25:55,472 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:25:55,475 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:25:55,476 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:25:55,476 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:25:55,477 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:25:55,478 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:25:55,479 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:25:55,479 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:25:55,480 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:25:55,481 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:25:55,482 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:25:55,483 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:25:55,484 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:25:55,484 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:25:55,485 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:25:55,485 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:25:55,486 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:25:55,487 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:25:55,488 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47ba371-fd71-4658-89be-2134b23d321d/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:25:55,516 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:25:55,517 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:25:55,518 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:25:55,518 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:25:55,518 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:25:55,519 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:25:55,519 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:25:55,519 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:25:55,520 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:25:55,520 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:25:55,520 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:25:55,521 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:25:55,521 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:25:55,521 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:25:55,522 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:25:55,523 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:25:55,523 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:25:55,523 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:25:55,524 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:25:55,524 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:25:55,524 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:25:55,525 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:25:55,525 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:25:55,525 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:25:55,526 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:25:55,526 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:25:55,526 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:25:55,527 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:25:55,527 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:25:55,527 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:25:55,528 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:25:55,528 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:25:55,529 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:25:55,529 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:25:55,529 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:25:55,530 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:25:55,530 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:25:55,530 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:25:55,530 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:25:55,531 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_f47ba371-fd71-4658-89be-2134b23d321d/bin/utaipan-WLngWcDbfI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47ba371-fd71-4658-89be-2134b23d321d/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 40a1e4973a5bf53655cfcab4993cc11275e56426 [2021-10-11 02:25:55,826 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:25:55,868 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:25:55,874 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:25:55,875 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:25:55,876 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:25:55,877 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47ba371-fd71-4658-89be-2134b23d321d/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/eca-rers2012/Problem01_label48.c [2021-10-11 02:25:55,966 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47ba371-fd71-4658-89be-2134b23d321d/bin/utaipan-WLngWcDbfI/data/7d174b2a9/e07529f022554357b8513f7bcfb56012/FLAG946e245a5 [2021-10-11 02:25:56,503 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:25:56,504 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47ba371-fd71-4658-89be-2134b23d321d/sv-benchmarks/c/eca-rers2012/Problem01_label48.c [2021-10-11 02:25:56,529 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47ba371-fd71-4658-89be-2134b23d321d/bin/utaipan-WLngWcDbfI/data/7d174b2a9/e07529f022554357b8513f7bcfb56012/FLAG946e245a5 [2021-10-11 02:25:56,779 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47ba371-fd71-4658-89be-2134b23d321d/bin/utaipan-WLngWcDbfI/data/7d174b2a9/e07529f022554357b8513f7bcfb56012 [2021-10-11 02:25:56,781 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:25:56,782 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:25:56,784 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:25:56,784 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:25:56,788 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:25:56,789 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:25:56" (1/1) ... [2021-10-11 02:25:56,791 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d6346fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:56, skipping insertion in model container [2021-10-11 02:25:56,791 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:25:56" (1/1) ... [2021-10-11 02:25:56,804 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:25:56,895 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:25:57,231 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47ba371-fd71-4658-89be-2134b23d321d/sv-benchmarks/c/eca-rers2012/Problem01_label48.c[20593,20606] [2021-10-11 02:25:57,256 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:25:57,278 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:25:57,417 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47ba371-fd71-4658-89be-2134b23d321d/sv-benchmarks/c/eca-rers2012/Problem01_label48.c[20593,20606] [2021-10-11 02:25:57,438 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:25:57,462 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:25:57,462 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:57 WrapperNode [2021-10-11 02:25:57,463 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:25:57,464 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:25:57,464 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:25:57,464 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:25:57,470 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:57" (1/1) ... [2021-10-11 02:25:57,503 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:57" (1/1) ... [2021-10-11 02:25:57,565 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:25:57,566 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:25:57,567 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:25:57,567 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:25:57,576 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:57" (1/1) ... [2021-10-11 02:25:57,576 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:57" (1/1) ... [2021-10-11 02:25:57,581 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:57" (1/1) ... [2021-10-11 02:25:57,581 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:57" (1/1) ... [2021-10-11 02:25:57,604 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:57" (1/1) ... [2021-10-11 02:25:57,630 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:57" (1/1) ... [2021-10-11 02:25:57,636 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:57" (1/1) ... [2021-10-11 02:25:57,655 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:25:57,656 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:25:57,656 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:25:57,656 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:25:57,659 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:57" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47ba371-fd71-4658-89be-2134b23d321d/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:25:57,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:25:57,749 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:25:57,749 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:25:57,749 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:25:59,927 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:25:59,927 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-11 02:25:59,932 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:25:59 BoogieIcfgContainer [2021-10-11 02:25:59,932 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:25:59,939 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:25:59,940 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:25:59,943 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:25:59,943 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:25:56" (1/3) ... [2021-10-11 02:25:59,944 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f8ecf91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:25:59, skipping insertion in model container [2021-10-11 02:25:59,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:57" (2/3) ... [2021-10-11 02:25:59,945 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f8ecf91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:25:59, skipping insertion in model container [2021-10-11 02:25:59,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:25:59" (3/3) ... [2021-10-11 02:25:59,947 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label48.c [2021-10-11 02:25:59,965 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:25:59,969 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:25:59,980 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 02:26:00,017 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:26:00,017 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:26:00,018 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:26:00,018 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:26:00,018 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:26:00,019 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:26:00,019 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:26:00,019 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:26:00,036 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2021-10-11 02:26:00,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-10-11 02:26:00,044 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:00,045 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:26:00,046 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:26:00,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:00,051 INFO L82 PathProgramCache]: Analyzing trace with hash -1806906712, now seen corresponding path program 1 times [2021-10-11 02:26:00,061 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:00,062 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316378288] [2021-10-11 02:26:00,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:00,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:00,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:26:00,474 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316378288] [2021-10-11 02:26:00,474 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:26:00,475 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:26:00,476 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41616819] [2021-10-11 02:26:00,482 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:26:00,482 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:00,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:26:00,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:26:00,500 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 3 states. [2021-10-11 02:26:01,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:01,016 INFO L93 Difference]: Finished difference Result 224 states and 428 transitions. [2021-10-11 02:26:01,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:26:01,018 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 71 [2021-10-11 02:26:01,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:01,051 INFO L225 Difference]: With dead ends: 224 [2021-10-11 02:26:01,052 INFO L226 Difference]: Without dead ends: 145 [2021-10-11 02:26:01,055 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:26:01,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-10-11 02:26:01,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2021-10-11 02:26:01,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2021-10-11 02:26:01,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 259 transitions. [2021-10-11 02:26:01,116 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 259 transitions. Word has length 71 [2021-10-11 02:26:01,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:01,117 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 259 transitions. [2021-10-11 02:26:01,117 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:26:01,117 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 259 transitions. [2021-10-11 02:26:01,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-10-11 02:26:01,121 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:01,121 INFO L422 BasicCegarLoop]: trace histogram [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] [2021-10-11 02:26:01,122 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:26:01,122 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:26:01,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:01,123 INFO L82 PathProgramCache]: Analyzing trace with hash -1034851205, now seen corresponding path program 1 times [2021-10-11 02:26:01,123 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:01,123 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385829437] [2021-10-11 02:26:01,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:01,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:01,210 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:26:01,210 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385829437] [2021-10-11 02:26:01,211 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:26:01,211 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:26:01,212 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976588487] [2021-10-11 02:26:01,213 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:26:01,214 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:01,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:26:01,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:26:01,217 INFO L87 Difference]: Start difference. First operand 145 states and 259 transitions. Second operand 3 states. [2021-10-11 02:26:01,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:01,693 INFO L93 Difference]: Finished difference Result 431 states and 774 transitions. [2021-10-11 02:26:01,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:26:01,694 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2021-10-11 02:26:01,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:01,702 INFO L225 Difference]: With dead ends: 431 [2021-10-11 02:26:01,703 INFO L226 Difference]: Without dead ends: 287 [2021-10-11 02:26:01,706 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:26:01,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2021-10-11 02:26:01,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2021-10-11 02:26:01,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2021-10-11 02:26:01,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 468 transitions. [2021-10-11 02:26:01,751 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 468 transitions. Word has length 77 [2021-10-11 02:26:01,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:01,752 INFO L481 AbstractCegarLoop]: Abstraction has 287 states and 468 transitions. [2021-10-11 02:26:01,752 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:26:01,752 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 468 transitions. [2021-10-11 02:26:01,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-10-11 02:26:01,766 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:01,767 INFO L422 BasicCegarLoop]: trace histogram [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] [2021-10-11 02:26:01,767 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:26:01,768 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:26:01,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:01,768 INFO L82 PathProgramCache]: Analyzing trace with hash -1703771847, now seen corresponding path program 1 times [2021-10-11 02:26:01,769 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:01,769 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579786650] [2021-10-11 02:26:01,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:01,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:02,039 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:26:02,039 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579786650] [2021-10-11 02:26:02,040 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:26:02,040 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:26:02,040 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951918954] [2021-10-11 02:26:02,041 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:26:02,041 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:02,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:26:02,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:26:02,042 INFO L87 Difference]: Start difference. First operand 287 states and 468 transitions. Second operand 4 states. [2021-10-11 02:26:02,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:02,638 INFO L93 Difference]: Finished difference Result 784 states and 1255 transitions. [2021-10-11 02:26:02,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:26:02,639 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 78 [2021-10-11 02:26:02,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:02,642 INFO L225 Difference]: With dead ends: 784 [2021-10-11 02:26:02,643 INFO L226 Difference]: Without dead ends: 429 [2021-10-11 02:26:02,645 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:26:02,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2021-10-11 02:26:02,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 429. [2021-10-11 02:26:02,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 429 states. [2021-10-11 02:26:02,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 557 transitions. [2021-10-11 02:26:02,667 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 557 transitions. Word has length 78 [2021-10-11 02:26:02,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:02,668 INFO L481 AbstractCegarLoop]: Abstraction has 429 states and 557 transitions. [2021-10-11 02:26:02,668 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:26:02,668 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 557 transitions. [2021-10-11 02:26:02,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-10-11 02:26:02,670 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:02,670 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:26:02,670 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 02:26:02,671 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:26:02,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:02,671 INFO L82 PathProgramCache]: Analyzing trace with hash -494775730, now seen corresponding path program 1 times [2021-10-11 02:26:02,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:02,672 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932211561] [2021-10-11 02:26:02,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:02,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:02,742 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:26:02,742 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932211561] [2021-10-11 02:26:02,742 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:26:02,743 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:26:02,743 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384906466] [2021-10-11 02:26:02,743 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:26:02,743 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:02,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:26:02,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:26:02,744 INFO L87 Difference]: Start difference. First operand 429 states and 557 transitions. Second operand 4 states. [2021-10-11 02:26:03,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:03,191 INFO L93 Difference]: Finished difference Result 999 states and 1360 transitions. [2021-10-11 02:26:03,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:26:03,202 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 83 [2021-10-11 02:26:03,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:03,206 INFO L225 Difference]: With dead ends: 999 [2021-10-11 02:26:03,206 INFO L226 Difference]: Without dead ends: 642 [2021-10-11 02:26:03,207 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:26:03,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2021-10-11 02:26:03,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 642. [2021-10-11 02:26:03,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 642 states. [2021-10-11 02:26:03,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 851 transitions. [2021-10-11 02:26:03,235 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 851 transitions. Word has length 83 [2021-10-11 02:26:03,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:03,236 INFO L481 AbstractCegarLoop]: Abstraction has 642 states and 851 transitions. [2021-10-11 02:26:03,236 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:26:03,236 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 851 transitions. [2021-10-11 02:26:03,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-10-11 02:26:03,238 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:03,238 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 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] [2021-10-11 02:26:03,238 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 02:26:03,238 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:26:03,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:03,238 INFO L82 PathProgramCache]: Analyzing trace with hash -792259478, now seen corresponding path program 1 times [2021-10-11 02:26:03,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:03,239 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109721749] [2021-10-11 02:26:03,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:03,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:03,345 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-10-11 02:26:03,345 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109721749] [2021-10-11 02:26:03,345 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:26:03,345 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:26:03,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248355317] [2021-10-11 02:26:03,346 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:26:03,347 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:03,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:26:03,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:26:03,348 INFO L87 Difference]: Start difference. First operand 642 states and 851 transitions. Second operand 3 states. [2021-10-11 02:26:03,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:03,721 INFO L93 Difference]: Finished difference Result 1567 states and 2073 transitions. [2021-10-11 02:26:03,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:26:03,722 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 92 [2021-10-11 02:26:03,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:03,728 INFO L225 Difference]: With dead ends: 1567 [2021-10-11 02:26:03,728 INFO L226 Difference]: Without dead ends: 997 [2021-10-11 02:26:03,729 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:26:03,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2021-10-11 02:26:03,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 784. [2021-10-11 02:26:03,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 784 states. [2021-10-11 02:26:03,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 1029 transitions. [2021-10-11 02:26:03,754 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 1029 transitions. Word has length 92 [2021-10-11 02:26:03,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:03,754 INFO L481 AbstractCegarLoop]: Abstraction has 784 states and 1029 transitions. [2021-10-11 02:26:03,754 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:26:03,755 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 1029 transitions. [2021-10-11 02:26:03,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-10-11 02:26:03,757 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:03,757 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 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] [2021-10-11 02:26:03,757 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-11 02:26:03,757 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:26:03,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:03,758 INFO L82 PathProgramCache]: Analyzing trace with hash -1114803877, now seen corresponding path program 1 times [2021-10-11 02:26:03,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:03,758 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843244195] [2021-10-11 02:26:03,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:03,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:03,850 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:26:03,850 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843244195] [2021-10-11 02:26:03,851 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:26:03,851 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:26:03,851 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145171679] [2021-10-11 02:26:03,852 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:26:03,852 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:03,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:26:03,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:26:03,853 INFO L87 Difference]: Start difference. First operand 784 states and 1029 transitions. Second operand 4 states. [2021-10-11 02:26:04,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:04,403 INFO L93 Difference]: Finished difference Result 1709 states and 2302 transitions. [2021-10-11 02:26:04,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:26:04,411 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 98 [2021-10-11 02:26:04,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:04,417 INFO L225 Difference]: With dead ends: 1709 [2021-10-11 02:26:04,417 INFO L226 Difference]: Without dead ends: 997 [2021-10-11 02:26:04,419 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:26:04,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2021-10-11 02:26:04,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 926. [2021-10-11 02:26:04,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 926 states. [2021-10-11 02:26:04,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1202 transitions. [2021-10-11 02:26:04,450 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1202 transitions. Word has length 98 [2021-10-11 02:26:04,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:04,457 INFO L481 AbstractCegarLoop]: Abstraction has 926 states and 1202 transitions. [2021-10-11 02:26:04,458 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:26:04,458 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1202 transitions. [2021-10-11 02:26:04,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-10-11 02:26:04,461 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:04,461 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:26:04,462 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-11 02:26:04,462 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:26:04,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:04,463 INFO L82 PathProgramCache]: Analyzing trace with hash -1651485128, now seen corresponding path program 1 times [2021-10-11 02:26:04,464 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:04,464 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929393979] [2021-10-11 02:26:04,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:04,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:04,594 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-10-11 02:26:04,594 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929393979] [2021-10-11 02:26:04,594 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:26:04,594 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:26:04,594 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105150065] [2021-10-11 02:26:04,596 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:26:04,596 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:04,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:26:04,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:26:04,597 INFO L87 Difference]: Start difference. First operand 926 states and 1202 transitions. Second operand 4 states. [2021-10-11 02:26:05,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:05,120 INFO L93 Difference]: Finished difference Result 1993 states and 2589 transitions. [2021-10-11 02:26:05,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:26:05,121 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 112 [2021-10-11 02:26:05,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:05,128 INFO L225 Difference]: With dead ends: 1993 [2021-10-11 02:26:05,128 INFO L226 Difference]: Without dead ends: 1139 [2021-10-11 02:26:05,130 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:26:05,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1139 states. [2021-10-11 02:26:05,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1139 to 1068. [2021-10-11 02:26:05,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1068 states. [2021-10-11 02:26:05,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1363 transitions. [2021-10-11 02:26:05,161 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1363 transitions. Word has length 112 [2021-10-11 02:26:05,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:05,162 INFO L481 AbstractCegarLoop]: Abstraction has 1068 states and 1363 transitions. [2021-10-11 02:26:05,162 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:26:05,162 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1363 transitions. [2021-10-11 02:26:05,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-10-11 02:26:05,182 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:05,182 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:26:05,183 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-11 02:26:05,183 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:26:05,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:05,183 INFO L82 PathProgramCache]: Analyzing trace with hash -758588099, now seen corresponding path program 1 times [2021-10-11 02:26:05,184 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:05,184 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286719729] [2021-10-11 02:26:05,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:05,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:05,267 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:26:05,267 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286719729] [2021-10-11 02:26:05,267 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:26:05,268 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:26:05,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019584009] [2021-10-11 02:26:05,268 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:26:05,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:05,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:26:05,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:26:05,269 INFO L87 Difference]: Start difference. First operand 1068 states and 1363 transitions. Second operand 4 states. [2021-10-11 02:26:05,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:05,875 INFO L93 Difference]: Finished difference Result 2277 states and 2909 transitions. [2021-10-11 02:26:05,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:26:05,877 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 129 [2021-10-11 02:26:05,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:05,885 INFO L225 Difference]: With dead ends: 2277 [2021-10-11 02:26:05,885 INFO L226 Difference]: Without dead ends: 1281 [2021-10-11 02:26:05,886 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:26:05,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1281 states. [2021-10-11 02:26:05,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1281 to 997. [2021-10-11 02:26:05,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 997 states. [2021-10-11 02:26:05,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1203 transitions. [2021-10-11 02:26:05,916 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1203 transitions. Word has length 129 [2021-10-11 02:26:05,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:05,916 INFO L481 AbstractCegarLoop]: Abstraction has 997 states and 1203 transitions. [2021-10-11 02:26:05,916 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:26:05,917 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1203 transitions. [2021-10-11 02:26:05,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-10-11 02:26:05,920 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:05,920 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:26:05,920 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-11 02:26:05,920 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:26:05,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:05,921 INFO L82 PathProgramCache]: Analyzing trace with hash 811344603, now seen corresponding path program 1 times [2021-10-11 02:26:05,922 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:05,922 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79461526] [2021-10-11 02:26:05,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:05,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:06,071 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 151 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-10-11 02:26:06,071 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79461526] [2021-10-11 02:26:06,075 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:26:06,076 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:26:06,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718900458] [2021-10-11 02:26:06,077 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:26:06,078 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:06,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:26:06,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:26:06,079 INFO L87 Difference]: Start difference. First operand 997 states and 1203 transitions. Second operand 3 states. [2021-10-11 02:26:06,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:06,465 INFO L93 Difference]: Finished difference Result 2135 states and 2589 transitions. [2021-10-11 02:26:06,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:26:06,466 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 172 [2021-10-11 02:26:06,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:06,475 INFO L225 Difference]: With dead ends: 2135 [2021-10-11 02:26:06,475 INFO L226 Difference]: Without dead ends: 1210 [2021-10-11 02:26:06,477 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:26:06,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2021-10-11 02:26:06,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 1139. [2021-10-11 02:26:06,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1139 states. [2021-10-11 02:26:06,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 1359 transitions. [2021-10-11 02:26:06,519 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 1359 transitions. Word has length 172 [2021-10-11 02:26:06,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:06,520 INFO L481 AbstractCegarLoop]: Abstraction has 1139 states and 1359 transitions. [2021-10-11 02:26:06,520 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:26:06,521 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 1359 transitions. [2021-10-11 02:26:06,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-10-11 02:26:06,525 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:06,526 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-10-11 02:26:06,526 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-11 02:26:06,526 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:26:06,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:06,527 INFO L82 PathProgramCache]: Analyzing trace with hash -1579923804, now seen corresponding path program 1 times [2021-10-11 02:26:06,527 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:06,528 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219709997] [2021-10-11 02:26:06,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:06,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:06,930 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 121 proven. 64 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-10-11 02:26:06,930 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219709997] [2021-10-11 02:26:06,931 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1197283670] [2021-10-11 02:26:06,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47ba371-fd71-4658-89be-2134b23d321d/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:26:07,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:07,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:26:07,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:26:07,512 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2021-10-11 02:26:07,513 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:26:07,716 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2021-10-11 02:26:07,716 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:26:07,716 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2021-10-11 02:26:07,717 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572306458] [2021-10-11 02:26:07,717 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:26:07,718 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:07,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:26:07,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:26:07,718 INFO L87 Difference]: Start difference. First operand 1139 states and 1359 transitions. Second operand 3 states. [2021-10-11 02:26:08,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:08,104 INFO L93 Difference]: Finished difference Result 2561 states and 3082 transitions. [2021-10-11 02:26:08,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:26:08,105 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 194 [2021-10-11 02:26:08,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:08,113 INFO L225 Difference]: With dead ends: 2561 [2021-10-11 02:26:08,113 INFO L226 Difference]: Without dead ends: 1352 [2021-10-11 02:26:08,115 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 391 GetRequests, 386 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:26:08,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1352 states. [2021-10-11 02:26:08,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1352 to 1281. [2021-10-11 02:26:08,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1281 states. [2021-10-11 02:26:08,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1281 states to 1281 states and 1510 transitions. [2021-10-11 02:26:08,162 INFO L78 Accepts]: Start accepts. Automaton has 1281 states and 1510 transitions. Word has length 194 [2021-10-11 02:26:08,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:08,162 INFO L481 AbstractCegarLoop]: Abstraction has 1281 states and 1510 transitions. [2021-10-11 02:26:08,162 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:26:08,162 INFO L276 IsEmpty]: Start isEmpty. Operand 1281 states and 1510 transitions. [2021-10-11 02:26:08,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2021-10-11 02:26:08,166 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:08,167 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-10-11 02:26:08,390 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-10-11 02:26:08,390 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:26:08,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:08,390 INFO L82 PathProgramCache]: Analyzing trace with hash 922669153, now seen corresponding path program 1 times [2021-10-11 02:26:08,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:08,391 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954694305] [2021-10-11 02:26:08,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:08,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:08,536 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2021-10-11 02:26:08,536 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954694305] [2021-10-11 02:26:08,536 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:26:08,536 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:26:08,537 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156136844] [2021-10-11 02:26:08,537 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:26:08,537 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:08,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:26:08,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:26:08,538 INFO L87 Difference]: Start difference. First operand 1281 states and 1510 transitions. Second operand 3 states. [2021-10-11 02:26:08,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:08,911 INFO L93 Difference]: Finished difference Result 2701 states and 3185 transitions. [2021-10-11 02:26:08,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:26:08,911 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 197 [2021-10-11 02:26:08,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:08,912 INFO L225 Difference]: With dead ends: 2701 [2021-10-11 02:26:08,912 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:26:08,915 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:26:08,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:26:08,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:26:08,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:26:08,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:26:08,916 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 197 [2021-10-11 02:26:08,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:08,917 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:26:08,917 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:26:08,917 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:26:08,917 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:26:08,917 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-11 02:26:08,919 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 02:26:09,136 WARN L197 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 31 [2021-10-11 02:26:09,276 WARN L197 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 31 [2021-10-11 02:26:09,280 INFO L262 CegarLoopResult]: For program point L102(lines 102 400) no Hoare annotation was computed. [2021-10-11 02:26:09,280 INFO L262 CegarLoopResult]: For program point L598(line 598) no Hoare annotation was computed. [2021-10-11 02:26:09,280 INFO L262 CegarLoopResult]: For program point L334(lines 334 400) no Hoare annotation was computed. [2021-10-11 02:26:09,280 INFO L262 CegarLoopResult]: For program point L302(lines 302 400) no Hoare annotation was computed. [2021-10-11 02:26:09,280 INFO L262 CegarLoopResult]: For program point L170(lines 170 400) no Hoare annotation was computed. [2021-10-11 02:26:09,281 INFO L262 CegarLoopResult]: For program point L204(lines 204 400) no Hoare annotation was computed. [2021-10-11 02:26:09,281 INFO L262 CegarLoopResult]: For program point L72(lines 72 400) no Hoare annotation was computed. [2021-10-11 02:26:09,281 INFO L262 CegarLoopResult]: For program point L271(lines 271 400) no Hoare annotation was computed. [2021-10-11 02:26:09,281 INFO L262 CegarLoopResult]: For program point L139(lines 139 400) no Hoare annotation was computed. [2021-10-11 02:26:09,281 INFO L262 CegarLoopResult]: For program point L371(lines 371 400) no Hoare annotation was computed. [2021-10-11 02:26:09,281 INFO L262 CegarLoopResult]: For program point L107(lines 107 400) no Hoare annotation was computed. [2021-10-11 02:26:09,281 INFO L262 CegarLoopResult]: For program point L41(lines 41 400) no Hoare annotation was computed. [2021-10-11 02:26:09,282 INFO L262 CegarLoopResult]: For program point L339(lines 339 400) no Hoare annotation was computed. [2021-10-11 02:26:09,282 INFO L262 CegarLoopResult]: For program point L207(lines 207 400) no Hoare annotation was computed. [2021-10-11 02:26:09,282 INFO L262 CegarLoopResult]: For program point L75(lines 75 400) no Hoare annotation was computed. [2021-10-11 02:26:09,282 INFO L262 CegarLoopResult]: For program point L373(lines 373 400) no Hoare annotation was computed. [2021-10-11 02:26:09,282 INFO L262 CegarLoopResult]: For program point L241(lines 241 400) no Hoare annotation was computed. [2021-10-11 02:26:09,282 INFO L262 CegarLoopResult]: For program point L175(lines 175 400) no Hoare annotation was computed. [2021-10-11 02:26:09,282 INFO L262 CegarLoopResult]: For program point L275(lines 275 400) no Hoare annotation was computed. [2021-10-11 02:26:09,282 INFO L262 CegarLoopResult]: For program point L375(lines 375 400) no Hoare annotation was computed. [2021-10-11 02:26:09,283 INFO L262 CegarLoopResult]: For program point L309(lines 309 400) no Hoare annotation was computed. [2021-10-11 02:26:09,283 INFO L262 CegarLoopResult]: For program point L45(lines 45 400) no Hoare annotation was computed. [2021-10-11 02:26:09,283 INFO L262 CegarLoopResult]: For program point L343(lines 343 400) no Hoare annotation was computed. [2021-10-11 02:26:09,283 INFO L262 CegarLoopResult]: For program point L112(lines 112 400) no Hoare annotation was computed. [2021-10-11 02:26:09,283 INFO L262 CegarLoopResult]: For program point L278(lines 278 400) no Hoare annotation was computed. [2021-10-11 02:26:09,283 INFO L262 CegarLoopResult]: For program point L146(lines 146 400) no Hoare annotation was computed. [2021-10-11 02:26:09,283 INFO L262 CegarLoopResult]: For program point L213(lines 213 400) no Hoare annotation was computed. [2021-10-11 02:26:09,283 INFO L262 CegarLoopResult]: For program point L82(lines 82 400) no Hoare annotation was computed. [2021-10-11 02:26:09,284 INFO L262 CegarLoopResult]: For program point L545-1(lines 40 585) no Hoare annotation was computed. [2021-10-11 02:26:09,284 INFO L262 CegarLoopResult]: For program point L347(lines 347 400) no Hoare annotation was computed. [2021-10-11 02:26:09,284 INFO L262 CegarLoopResult]: For program point L248(lines 248 400) no Hoare annotation was computed. [2021-10-11 02:26:09,284 INFO L262 CegarLoopResult]: For program point L183(lines 183 400) no Hoare annotation was computed. [2021-10-11 02:26:09,284 INFO L262 CegarLoopResult]: For program point L150(lines 150 400) no Hoare annotation was computed. [2021-10-11 02:26:09,284 INFO L262 CegarLoopResult]: For program point L382(lines 382 400) no Hoare annotation was computed. [2021-10-11 02:26:09,284 INFO L262 CegarLoopResult]: For program point L316(lines 316 400) no Hoare annotation was computed. [2021-10-11 02:26:09,284 INFO L262 CegarLoopResult]: For program point L283(lines 283 400) no Hoare annotation was computed. [2021-10-11 02:26:09,285 INFO L262 CegarLoopResult]: For program point L118(lines 118 400) no Hoare annotation was computed. [2021-10-11 02:26:09,285 INFO L262 CegarLoopResult]: For program point L548-1(lines 40 585) no Hoare annotation was computed. [2021-10-11 02:26:09,285 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 02:26:09,285 INFO L262 CegarLoopResult]: For program point L218(lines 218 400) no Hoare annotation was computed. [2021-10-11 02:26:09,285 INFO L262 CegarLoopResult]: For program point L53(lines 53 400) no Hoare annotation was computed. [2021-10-11 02:26:09,285 INFO L262 CegarLoopResult]: For program point L549(line 549) no Hoare annotation was computed. [2021-10-11 02:26:09,285 INFO L262 CegarLoopResult]: For program point L154(lines 154 400) no Hoare annotation was computed. [2021-10-11 02:26:09,286 INFO L258 CegarLoopResult]: At program point L584(lines 40 585) the Hoare annotation is: (let ((.cse1 (<= 15 ~a8~0)) (.cse3 (= ~a7~0 1)) (.cse2 (= ~a16~0 6)) (.cse0 (= ~a20~0 1))) (or (and (<= ~a16~0 5) (not .cse0)) (and .cse0 .cse1) (<= ~a16~0 4) (and .cse2 (not .cse3) .cse1) (and .cse3 .cse0) (and (= ~a21~0 1) .cse2 (= ~a12~0 8) .cse0 (= ~a17~0 1)))) [2021-10-11 02:26:09,286 INFO L262 CegarLoopResult]: For program point L188(lines 188 400) no Hoare annotation was computed. [2021-10-11 02:26:09,286 INFO L262 CegarLoopResult]: For program point L387(lines 387 400) no Hoare annotation was computed. [2021-10-11 02:26:09,286 INFO L262 CegarLoopResult]: For program point L288(lines 288 400) no Hoare annotation was computed. [2021-10-11 02:26:09,286 INFO L262 CegarLoopResult]: For program point L255(lines 255 400) no Hoare annotation was computed. [2021-10-11 02:26:09,286 INFO L262 CegarLoopResult]: For program point L90(lines 90 400) no Hoare annotation was computed. [2021-10-11 02:26:09,286 INFO L262 CegarLoopResult]: For program point L355(lines 355 400) no Hoare annotation was computed. [2021-10-11 02:26:09,287 INFO L262 CegarLoopResult]: For program point L322(lines 322 400) no Hoare annotation was computed. [2021-10-11 02:26:09,287 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 02:26:09,287 INFO L262 CegarLoopResult]: For program point L124(lines 124 400) no Hoare annotation was computed. [2021-10-11 02:26:09,287 INFO L265 CegarLoopResult]: At program point L587(lines 587 604) the Hoare annotation is: true [2021-10-11 02:26:09,287 INFO L262 CegarLoopResult]: For program point L224(lines 224 400) no Hoare annotation was computed. [2021-10-11 02:26:09,287 INFO L262 CegarLoopResult]: For program point L158(lines 158 400) no Hoare annotation was computed. [2021-10-11 02:26:09,287 INFO L262 CegarLoopResult]: For program point L59(lines 59 400) no Hoare annotation was computed. [2021-10-11 02:26:09,287 INFO L262 CegarLoopResult]: For program point L94(lines 94 400) no Hoare annotation was computed. [2021-10-11 02:26:09,288 INFO L262 CegarLoopResult]: For program point L392(lines 392 400) no Hoare annotation was computed. [2021-10-11 02:26:09,288 INFO L262 CegarLoopResult]: For program point L326(lines 326 400) no Hoare annotation was computed. [2021-10-11 02:26:09,288 INFO L262 CegarLoopResult]: For program point L260(lines 260 400) no Hoare annotation was computed. [2021-10-11 02:26:09,288 INFO L262 CegarLoopResult]: For program point L228(lines 228 400) no Hoare annotation was computed. [2021-10-11 02:26:09,288 INFO L262 CegarLoopResult]: For program point L162(lines 162 400) no Hoare annotation was computed. [2021-10-11 02:26:09,288 INFO L262 CegarLoopResult]: For program point L129(lines 129 400) no Hoare annotation was computed. [2021-10-11 02:26:09,288 INFO L262 CegarLoopResult]: For program point L328(lines 328 400) no Hoare annotation was computed. [2021-10-11 02:26:09,288 INFO L262 CegarLoopResult]: For program point L196(lines 196 400) no Hoare annotation was computed. [2021-10-11 02:26:09,289 INFO L262 CegarLoopResult]: For program point L64(lines 64 400) no Hoare annotation was computed. [2021-10-11 02:26:09,289 INFO L258 CegarLoopResult]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse1 (<= 15 ~a8~0)) (.cse3 (= ~a7~0 1)) (.cse2 (= ~a16~0 6)) (.cse0 (= ~a20~0 1))) (or (and (<= ~a16~0 5) (not .cse0)) (and .cse0 .cse1) (<= ~a16~0 4) (and .cse2 (not .cse3) .cse1) (and .cse3 .cse0) (and (= ~a21~0 1) .cse2 (= ~a12~0 8) .cse0 (= ~a17~0 1)))) [2021-10-11 02:26:09,289 INFO L262 CegarLoopResult]: For program point L296(lines 296 400) no Hoare annotation was computed. [2021-10-11 02:26:09,289 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 549) no Hoare annotation was computed. [2021-10-11 02:26:09,289 INFO L262 CegarLoopResult]: For program point L363(lines 363 400) no Hoare annotation was computed. [2021-10-11 02:26:09,289 INFO L262 CegarLoopResult]: For program point L199(lines 199 400) no Hoare annotation was computed. [2021-10-11 02:26:09,290 INFO L262 CegarLoopResult]: For program point L365(lines 365 400) no Hoare annotation was computed. [2021-10-11 02:26:09,290 INFO L262 CegarLoopResult]: For program point L266(lines 266 400) no Hoare annotation was computed. [2021-10-11 02:26:09,290 INFO L262 CegarLoopResult]: For program point L233(lines 233 400) no Hoare annotation was computed. [2021-10-11 02:26:09,290 INFO L262 CegarLoopResult]: For program point L134(lines 134 400) no Hoare annotation was computed. [2021-10-11 02:26:09,308 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:26:09 BoogieIcfgContainer [2021-10-11 02:26:09,308 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:26:09,309 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:26:09,309 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:26:09,309 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:26:09,310 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:25:59" (3/4) ... [2021-10-11 02:26:09,313 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:26:09,333 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 102 nodes and edges [2021-10-11 02:26:09,334 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2021-10-11 02:26:09,336 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2021-10-11 02:26:09,338 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-10-11 02:26:09,459 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47ba371-fd71-4658-89be-2134b23d321d/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:26:09,459 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:26:09,460 INFO L168 Benchmark]: Toolchain (without parser) took 12677.29 ms. Allocated memory was 77.6 MB in the beginning and 291.5 MB in the end (delta: 213.9 MB). Free memory was 37.6 MB in the beginning and 144.8 MB in the end (delta: -107.2 MB). Peak memory consumption was 108.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:26:09,461 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 77.6 MB. Free memory was 55.8 MB in the beginning and 55.7 MB in the end (delta: 76.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:26:09,461 INFO L168 Benchmark]: CACSL2BoogieTranslator took 679.06 ms. Allocated memory was 77.6 MB in the beginning and 102.8 MB in the end (delta: 25.2 MB). Free memory was 37.4 MB in the beginning and 58.1 MB in the end (delta: -20.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:26:09,462 INFO L168 Benchmark]: Boogie Procedure Inliner took 101.81 ms. Allocated memory is still 102.8 MB. Free memory was 57.8 MB in the beginning and 52.2 MB in the end (delta: 5.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-11 02:26:09,462 INFO L168 Benchmark]: Boogie Preprocessor took 88.46 ms. Allocated memory is still 102.8 MB. Free memory was 52.2 MB in the beginning and 47.6 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:26:09,463 INFO L168 Benchmark]: RCFGBuilder took 2276.79 ms. Allocated memory was 102.8 MB in the beginning and 130.0 MB in the end (delta: 27.3 MB). Free memory was 47.6 MB in the beginning and 78.6 MB in the end (delta: -31.0 MB). Peak memory consumption was 35.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:26:09,463 INFO L168 Benchmark]: TraceAbstraction took 9369.38 ms. Allocated memory was 130.0 MB in the beginning and 291.5 MB in the end (delta: 161.5 MB). Free memory was 78.6 MB in the beginning and 159.5 MB in the end (delta: -80.9 MB). Peak memory consumption was 79.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:26:09,463 INFO L168 Benchmark]: Witness Printer took 150.25 ms. Allocated memory is still 291.5 MB. Free memory was 159.5 MB in the beginning and 144.8 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:26:09,466 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 77.6 MB. Free memory was 55.8 MB in the beginning and 55.7 MB in the end (delta: 76.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 679.06 ms. Allocated memory was 77.6 MB in the beginning and 102.8 MB in the end (delta: 25.2 MB). Free memory was 37.4 MB in the beginning and 58.1 MB in the end (delta: -20.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 101.81 ms. Allocated memory is still 102.8 MB. Free memory was 57.8 MB in the beginning and 52.2 MB in the end (delta: 5.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 88.46 ms. Allocated memory is still 102.8 MB. Free memory was 52.2 MB in the beginning and 47.6 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2276.79 ms. Allocated memory was 102.8 MB in the beginning and 130.0 MB in the end (delta: 27.3 MB). Free memory was 47.6 MB in the beginning and 78.6 MB in the end (delta: -31.0 MB). Peak memory consumption was 35.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 9369.38 ms. Allocated memory was 130.0 MB in the beginning and 291.5 MB in the end (delta: 161.5 MB). Free memory was 78.6 MB in the beginning and 159.5 MB in the end (delta: -80.9 MB). Peak memory consumption was 79.5 MB. Max. memory is 16.1 GB. * Witness Printer took 150.25 ms. Allocated memory is still 291.5 MB. Free memory was 159.5 MB in the beginning and 144.8 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 549]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: (((((a16 <= 5 && !(a20 == 1)) || (a20 == 1 && 15 <= a8)) || a16 <= 4) || ((a16 == 6 && !(a7 == 1)) && 15 <= a8)) || (a7 == 1 && a20 == 1)) || ((((a21 == 1 && a16 == 6) && a12 == 8) && a20 == 1) && a17 == 1) - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: (((((a16 <= 5 && !(a20 == 1)) || (a20 == 1 && 15 <= a8)) || a16 <= 4) || ((a16 == 6 && !(a7 == 1)) && 15 <= a8)) || (a7 == 1 && a20 == 1)) || ((((a21 == 1 && a16 == 6) && a12 == 8) && a20 == 1) && a17 == 1) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 8.9s, OverallIterations: 11, TraceHistogramMax: 5, AutomataDifference: 5.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 569 SDtfs, 1013 SDslu, 55 SDs, 0 SdLazy, 2760 SolverSat, 709 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 421 GetRequests, 401 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1281occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 11 MinimizatonAttempts, 781 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 49 NumberOfFragments, 107 HoareAnnotationTreeSize, 3 FomulaSimplifications, 1686 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 490 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 1497 NumberOfCodeBlocks, 1497 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 1678 ConstructedInterpolants, 0 QuantifiedInterpolants, 906012 SizeOfPredicates, 0 NumberOfNonLiveVariables, 447 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 13 InterpolantComputations, 12 PerfectInterpolantSequences, 1178/1242 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...