./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label14.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_bbba1352-4be7-4ff5-b7c6-490dab6fdf5e/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbba1352-4be7-4ff5-b7c6-490dab6fdf5e/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_bbba1352-4be7-4ff5-b7c6-490dab6fdf5e/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbba1352-4be7-4ff5-b7c6-490dab6fdf5e/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label14.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbba1352-4be7-4ff5-b7c6-490dab6fdf5e/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_bbba1352-4be7-4ff5-b7c6-490dab6fdf5e/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 df7f5e6e8c29563db4c2ff0747f0b53376257397 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 02:23:42,929 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:23:42,932 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:23:42,986 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:23:42,987 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:23:42,992 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:23:42,995 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:23:43,000 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:23:43,003 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:23:43,013 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:23:43,014 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:23:43,017 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:23:43,017 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:23:43,022 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:23:43,024 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:23:43,026 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:23:43,028 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:23:43,033 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:23:43,036 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:23:43,047 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:23:43,049 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:23:43,051 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:23:43,055 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:23:43,056 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:23:43,066 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:23:43,067 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:23:43,067 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:23:43,070 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:23:43,071 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:23:43,073 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:23:43,073 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:23:43,074 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:23:43,077 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:23:43,079 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:23:43,080 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:23:43,081 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:23:43,082 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:23:43,082 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:23:43,083 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:23:43,084 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:23:43,085 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:23:43,085 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbba1352-4be7-4ff5-b7c6-490dab6fdf5e/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:23:43,133 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:23:43,133 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:23:43,136 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:23:43,136 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:23:43,137 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:23:43,137 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:23:43,137 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:23:43,138 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:23:43,138 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:23:43,138 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:23:43,140 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:23:43,141 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:23:43,141 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:23:43,141 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:23:43,142 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:23:43,143 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:23:43,143 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:23:43,143 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:23:43,143 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:23:43,144 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:23:43,144 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:23:43,144 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:23:43,145 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:23:43,145 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:23:43,145 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:23:43,146 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:23:43,146 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:23:43,146 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:23:43,147 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:23:43,147 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:23:43,147 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:23:43,148 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:23:43,148 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:23:43,148 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:23:43,149 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:23:43,149 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:23:43,149 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:23:43,150 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:23:43,150 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:23:43,150 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_bbba1352-4be7-4ff5-b7c6-490dab6fdf5e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbba1352-4be7-4ff5-b7c6-490dab6fdf5e/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> df7f5e6e8c29563db4c2ff0747f0b53376257397 [2021-10-11 02:23:43,440 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:23:43,475 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:23:43,479 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:23:43,480 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:23:43,488 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:23:43,489 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbba1352-4be7-4ff5-b7c6-490dab6fdf5e/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/eca-rers2012/Problem01_label14.c [2021-10-11 02:23:43,576 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbba1352-4be7-4ff5-b7c6-490dab6fdf5e/bin/utaipan-WLngWcDbfI/data/54b367ef4/888dd23fb1654646ba5d12f7c736ca2c/FLAG7ce3c4235 [2021-10-11 02:23:44,274 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:23:44,275 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbba1352-4be7-4ff5-b7c6-490dab6fdf5e/sv-benchmarks/c/eca-rers2012/Problem01_label14.c [2021-10-11 02:23:44,301 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbba1352-4be7-4ff5-b7c6-490dab6fdf5e/bin/utaipan-WLngWcDbfI/data/54b367ef4/888dd23fb1654646ba5d12f7c736ca2c/FLAG7ce3c4235 [2021-10-11 02:23:44,487 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbba1352-4be7-4ff5-b7c6-490dab6fdf5e/bin/utaipan-WLngWcDbfI/data/54b367ef4/888dd23fb1654646ba5d12f7c736ca2c [2021-10-11 02:23:44,490 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:23:44,492 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:23:44,494 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:23:44,494 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:23:44,501 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:23:44,503 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:23:44" (1/1) ... [2021-10-11 02:23:44,505 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1db4d948 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:44, skipping insertion in model container [2021-10-11 02:23:44,506 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:23:44" (1/1) ... [2021-10-11 02:23:44,514 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:23:44,578 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:23:45,022 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_bbba1352-4be7-4ff5-b7c6-490dab6fdf5e/sv-benchmarks/c/eca-rers2012/Problem01_label14.c[21834,21847] [2021-10-11 02:23:45,040 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:23:45,067 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:23:45,231 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_bbba1352-4be7-4ff5-b7c6-490dab6fdf5e/sv-benchmarks/c/eca-rers2012/Problem01_label14.c[21834,21847] [2021-10-11 02:23:45,238 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:23:45,256 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:23:45,257 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:45 WrapperNode [2021-10-11 02:23:45,257 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:23:45,258 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:23:45,258 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:23:45,258 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:23:45,268 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:45" (1/1) ... [2021-10-11 02:23:45,310 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:45" (1/1) ... [2021-10-11 02:23:45,377 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:23:45,378 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:23:45,378 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:23:45,378 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:23:45,388 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:45" (1/1) ... [2021-10-11 02:23:45,389 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:45" (1/1) ... [2021-10-11 02:23:45,394 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:45" (1/1) ... [2021-10-11 02:23:45,408 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:45" (1/1) ... [2021-10-11 02:23:45,446 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:45" (1/1) ... [2021-10-11 02:23:45,457 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:45" (1/1) ... [2021-10-11 02:23:45,464 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:45" (1/1) ... [2021-10-11 02:23:45,471 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:23:45,473 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:23:45,473 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:23:45,473 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:23:45,474 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:45" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbba1352-4be7-4ff5-b7c6-490dab6fdf5e/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 02:23:45,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:23:45,575 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:23:45,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:23:45,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:23:48,844 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:23:48,845 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-11 02:23:48,850 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:23:48 BoogieIcfgContainer [2021-10-11 02:23:48,850 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:23:48,853 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:23:48,854 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:23:48,857 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:23:48,858 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:23:44" (1/3) ... [2021-10-11 02:23:48,859 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bf7ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:23:48, skipping insertion in model container [2021-10-11 02:23:48,860 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:45" (2/3) ... [2021-10-11 02:23:48,860 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bf7ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:23:48, skipping insertion in model container [2021-10-11 02:23:48,860 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:23:48" (3/3) ... [2021-10-11 02:23:48,863 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label14.c [2021-10-11 02:23:48,883 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:23:48,888 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:23:48,901 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 02:23:48,944 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:23:48,944 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:23:48,945 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:23:48,945 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:23:48,945 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:23:48,945 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:23:48,945 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:23:48,945 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:23:48,963 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2021-10-11 02:23:48,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-10-11 02:23:48,973 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:48,974 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 02:23:48,974 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:23:48,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:48,981 INFO L82 PathProgramCache]: Analyzing trace with hash -1806904152, now seen corresponding path program 1 times [2021-10-11 02:23:48,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:23:48,993 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170701067] [2021-10-11 02:23:48,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:23:49,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:49,671 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 02:23:49,672 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170701067] [2021-10-11 02:23:49,673 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:23:49,674 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:23:49,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904219621] [2021-10-11 02:23:49,680 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:23:49,681 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:23:49,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:23:49,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:23:49,700 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 4 states. [2021-10-11 02:23:50,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:50,992 INFO L93 Difference]: Finished difference Result 297 states and 569 transitions. [2021-10-11 02:23:51,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:23:51,003 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 71 [2021-10-11 02:23:51,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:51,020 INFO L225 Difference]: With dead ends: 297 [2021-10-11 02:23:51,032 INFO L226 Difference]: Without dead ends: 216 [2021-10-11 02:23:51,046 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:23:51,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2021-10-11 02:23:51,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2021-10-11 02:23:51,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2021-10-11 02:23:51,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 336 transitions. [2021-10-11 02:23:51,113 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 336 transitions. Word has length 71 [2021-10-11 02:23:51,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:51,114 INFO L481 AbstractCegarLoop]: Abstraction has 216 states and 336 transitions. [2021-10-11 02:23:51,114 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:23:51,114 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 336 transitions. [2021-10-11 02:23:51,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-10-11 02:23:51,120 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:51,121 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 02:23:51,121 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:23:51,121 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:23:51,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:51,122 INFO L82 PathProgramCache]: Analyzing trace with hash -1703769287, now seen corresponding path program 1 times [2021-10-11 02:23:51,123 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:23:51,123 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247405184] [2021-10-11 02:23:51,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:23:51,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:51,548 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 02:23:51,549 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247405184] [2021-10-11 02:23:51,549 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:23:51,549 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:23:51,550 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513210968] [2021-10-11 02:23:51,551 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:23:51,552 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:23:51,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:23:51,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:23:51,553 INFO L87 Difference]: Start difference. First operand 216 states and 336 transitions. Second operand 4 states. [2021-10-11 02:23:52,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:52,418 INFO L93 Difference]: Finished difference Result 500 states and 848 transitions. [2021-10-11 02:23:52,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:23:52,419 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 78 [2021-10-11 02:23:52,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:52,435 INFO L225 Difference]: With dead ends: 500 [2021-10-11 02:23:52,437 INFO L226 Difference]: Without dead ends: 287 [2021-10-11 02:23:52,439 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 02:23:52,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2021-10-11 02:23:52,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 216. [2021-10-11 02:23:52,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2021-10-11 02:23:52,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 293 transitions. [2021-10-11 02:23:52,487 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 293 transitions. Word has length 78 [2021-10-11 02:23:52,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:52,488 INFO L481 AbstractCegarLoop]: Abstraction has 216 states and 293 transitions. [2021-10-11 02:23:52,488 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:23:52,488 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 293 transitions. [2021-10-11 02:23:52,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-10-11 02:23:52,504 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:52,504 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:23:52,504 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:23:52,504 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:23:52,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:52,505 INFO L82 PathProgramCache]: Analyzing trace with hash 350107255, now seen corresponding path program 1 times [2021-10-11 02:23:52,506 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:23:52,506 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21978462] [2021-10-11 02:23:52,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:23:52,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:52,622 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:23:52,622 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21978462] [2021-10-11 02:23:52,623 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:23:52,623 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:23:52,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27526586] [2021-10-11 02:23:52,625 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:23:52,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:23:52,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:23:52,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:23:52,634 INFO L87 Difference]: Start difference. First operand 216 states and 293 transitions. Second operand 4 states. [2021-10-11 02:23:53,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:53,226 INFO L93 Difference]: Finished difference Result 573 states and 802 transitions. [2021-10-11 02:23:53,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:23:53,231 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 86 [2021-10-11 02:23:53,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:53,234 INFO L225 Difference]: With dead ends: 573 [2021-10-11 02:23:53,234 INFO L226 Difference]: Without dead ends: 358 [2021-10-11 02:23:53,236 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 02:23:53,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2021-10-11 02:23:53,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 358. [2021-10-11 02:23:53,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 358 states. [2021-10-11 02:23:53,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 483 transitions. [2021-10-11 02:23:53,266 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 483 transitions. Word has length 86 [2021-10-11 02:23:53,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:53,266 INFO L481 AbstractCegarLoop]: Abstraction has 358 states and 483 transitions. [2021-10-11 02:23:53,266 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:23:53,266 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 483 transitions. [2021-10-11 02:23:53,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-10-11 02:23:53,272 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:53,272 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 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] [2021-10-11 02:23:53,273 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 02:23:53,273 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:23:53,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:53,274 INFO L82 PathProgramCache]: Analyzing trace with hash -785759435, now seen corresponding path program 1 times [2021-10-11 02:23:53,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:23:53,274 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529193165] [2021-10-11 02:23:53,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:23:53,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:53,383 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-10-11 02:23:53,384 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529193165] [2021-10-11 02:23:53,384 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:23:53,384 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:23:53,384 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652583230] [2021-10-11 02:23:53,385 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:23:53,385 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:23:53,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:23:53,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:23:53,386 INFO L87 Difference]: Start difference. First operand 358 states and 483 transitions. Second operand 3 states. [2021-10-11 02:23:53,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:53,782 INFO L93 Difference]: Finished difference Result 999 states and 1339 transitions. [2021-10-11 02:23:53,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:23:53,782 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 111 [2021-10-11 02:23:53,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:53,788 INFO L225 Difference]: With dead ends: 999 [2021-10-11 02:23:53,788 INFO L226 Difference]: Without dead ends: 642 [2021-10-11 02:23:53,790 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 02:23:53,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2021-10-11 02:23:53,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 571. [2021-10-11 02:23:53,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 571 states. [2021-10-11 02:23:53,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 779 transitions. [2021-10-11 02:23:53,821 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 779 transitions. Word has length 111 [2021-10-11 02:23:53,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:53,822 INFO L481 AbstractCegarLoop]: Abstraction has 571 states and 779 transitions. [2021-10-11 02:23:53,822 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:23:53,822 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 779 transitions. [2021-10-11 02:23:53,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-10-11 02:23:53,829 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:53,830 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2021-10-11 02:23:53,830 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 02:23:53,830 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:23:53,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:53,831 INFO L82 PathProgramCache]: Analyzing trace with hash 1795765924, now seen corresponding path program 1 times [2021-10-11 02:23:53,831 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:23:53,832 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962257285] [2021-10-11 02:23:53,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:23:53,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:53,962 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-10-11 02:23:53,963 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962257285] [2021-10-11 02:23:53,963 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:23:53,963 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:23:53,964 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569876544] [2021-10-11 02:23:53,966 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:23:53,966 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:23:53,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:23:53,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:23:53,971 INFO L87 Difference]: Start difference. First operand 571 states and 779 transitions. Second operand 4 states. [2021-10-11 02:23:54,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:54,569 INFO L93 Difference]: Finished difference Result 1283 states and 1754 transitions. [2021-10-11 02:23:54,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:23:54,570 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 117 [2021-10-11 02:23:54,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:54,575 INFO L225 Difference]: With dead ends: 1283 [2021-10-11 02:23:54,575 INFO L226 Difference]: Without dead ends: 713 [2021-10-11 02:23:54,577 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 02:23:54,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2021-10-11 02:23:54,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 642. [2021-10-11 02:23:54,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 642 states. [2021-10-11 02:23:54,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 858 transitions. [2021-10-11 02:23:54,604 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 858 transitions. Word has length 117 [2021-10-11 02:23:54,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:54,604 INFO L481 AbstractCegarLoop]: Abstraction has 642 states and 858 transitions. [2021-10-11 02:23:54,605 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:23:54,605 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 858 transitions. [2021-10-11 02:23:54,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-10-11 02:23:54,608 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:54,609 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:23:54,609 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-11 02:23:54,609 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:23:54,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:54,610 INFO L82 PathProgramCache]: Analyzing trace with hash 1365893799, now seen corresponding path program 1 times [2021-10-11 02:23:54,610 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:23:54,611 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987971920] [2021-10-11 02:23:54,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:23:54,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:54,762 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-10-11 02:23:54,762 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987971920] [2021-10-11 02:23:54,762 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:23:54,762 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:23:54,763 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237151494] [2021-10-11 02:23:54,763 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:23:54,764 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:23:54,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:23:54,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:23:54,765 INFO L87 Difference]: Start difference. First operand 642 states and 858 transitions. Second operand 4 states. [2021-10-11 02:23:55,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:55,486 INFO L93 Difference]: Finished difference Result 1496 states and 1977 transitions. [2021-10-11 02:23:55,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:23:55,487 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 131 [2021-10-11 02:23:55,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:55,493 INFO L225 Difference]: With dead ends: 1496 [2021-10-11 02:23:55,493 INFO L226 Difference]: Without dead ends: 855 [2021-10-11 02:23:55,495 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 02:23:55,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2021-10-11 02:23:55,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 784. [2021-10-11 02:23:55,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 784 states. [2021-10-11 02:23:55,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 1022 transitions. [2021-10-11 02:23:55,523 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 1022 transitions. Word has length 131 [2021-10-11 02:23:55,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:55,523 INFO L481 AbstractCegarLoop]: Abstraction has 784 states and 1022 transitions. [2021-10-11 02:23:55,523 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:23:55,524 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 1022 transitions. [2021-10-11 02:23:55,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-10-11 02:23:55,527 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:55,527 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 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 02:23:55,527 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-11 02:23:55,528 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:23:55,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:55,528 INFO L82 PathProgramCache]: Analyzing trace with hash -1083757694, now seen corresponding path program 1 times [2021-10-11 02:23:55,529 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:23:55,529 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917881378] [2021-10-11 02:23:55,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:23:55,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:55,706 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-10-11 02:23:55,706 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917881378] [2021-10-11 02:23:55,706 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:23:55,707 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:23:55,707 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537884918] [2021-10-11 02:23:55,708 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:23:55,709 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:23:55,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:23:55,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:23:55,710 INFO L87 Difference]: Start difference. First operand 784 states and 1022 transitions. Second operand 3 states. [2021-10-11 02:23:56,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:56,117 INFO L93 Difference]: Finished difference Result 1709 states and 2196 transitions. [2021-10-11 02:23:56,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:23:56,118 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 148 [2021-10-11 02:23:56,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:56,125 INFO L225 Difference]: With dead ends: 1709 [2021-10-11 02:23:56,125 INFO L226 Difference]: Without dead ends: 926 [2021-10-11 02:23:56,127 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 02:23:56,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2021-10-11 02:23:56,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 784. [2021-10-11 02:23:56,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 784 states. [2021-10-11 02:23:56,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 1016 transitions. [2021-10-11 02:23:56,156 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 1016 transitions. Word has length 148 [2021-10-11 02:23:56,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:56,156 INFO L481 AbstractCegarLoop]: Abstraction has 784 states and 1016 transitions. [2021-10-11 02:23:56,156 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:23:56,157 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 1016 transitions. [2021-10-11 02:23:56,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2021-10-11 02:23:56,160 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:56,161 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 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, 1] [2021-10-11 02:23:56,161 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-11 02:23:56,161 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:23:56,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:56,162 INFO L82 PathProgramCache]: Analyzing trace with hash -274852572, now seen corresponding path program 1 times [2021-10-11 02:23:56,162 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:23:56,162 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677491970] [2021-10-11 02:23:56,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:23:56,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:56,453 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 188 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-10-11 02:23:56,453 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677491970] [2021-10-11 02:23:56,454 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:23:56,454 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-11 02:23:56,454 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339345972] [2021-10-11 02:23:56,454 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:23:56,455 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:23:56,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:23:56,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:23:56,455 INFO L87 Difference]: Start difference. First operand 784 states and 1016 transitions. Second operand 5 states. [2021-10-11 02:23:57,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:57,001 INFO L93 Difference]: Finished difference Result 1733 states and 2208 transitions. [2021-10-11 02:23:57,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:23:57,001 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 191 [2021-10-11 02:23:57,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:57,008 INFO L225 Difference]: With dead ends: 1733 [2021-10-11 02:23:57,008 INFO L226 Difference]: Without dead ends: 950 [2021-10-11 02:23:57,010 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:23:57,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 950 states. [2021-10-11 02:23:57,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 950 to 855. [2021-10-11 02:23:57,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 855 states. [2021-10-11 02:23:57,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1055 transitions. [2021-10-11 02:23:57,035 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1055 transitions. Word has length 191 [2021-10-11 02:23:57,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:57,037 INFO L481 AbstractCegarLoop]: Abstraction has 855 states and 1055 transitions. [2021-10-11 02:23:57,037 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:23:57,037 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1055 transitions. [2021-10-11 02:23:57,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-10-11 02:23:57,041 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:57,041 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 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, 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] [2021-10-11 02:23:57,041 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-11 02:23:57,041 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:23:57,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:57,042 INFO L82 PathProgramCache]: Analyzing trace with hash 1630205475, now seen corresponding path program 1 times [2021-10-11 02:23:57,042 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:23:57,042 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772597006] [2021-10-11 02:23:57,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:23:57,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:57,218 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 226 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-10-11 02:23:57,218 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772597006] [2021-10-11 02:23:57,223 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:23:57,223 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:23:57,223 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142235497] [2021-10-11 02:23:57,224 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:23:57,225 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:23:57,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:23:57,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:23:57,225 INFO L87 Difference]: Start difference. First operand 855 states and 1055 transitions. Second operand 3 states. [2021-10-11 02:23:57,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:57,597 INFO L93 Difference]: Finished difference Result 1851 states and 2332 transitions. [2021-10-11 02:23:57,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:23:57,598 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 204 [2021-10-11 02:23:57,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:57,605 INFO L225 Difference]: With dead ends: 1851 [2021-10-11 02:23:57,605 INFO L226 Difference]: Without dead ends: 997 [2021-10-11 02:23:57,607 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 02:23:57,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2021-10-11 02:23:57,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 997. [2021-10-11 02:23:57,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 997 states. [2021-10-11 02:23:57,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1230 transitions. [2021-10-11 02:23:57,643 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1230 transitions. Word has length 204 [2021-10-11 02:23:57,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:57,643 INFO L481 AbstractCegarLoop]: Abstraction has 997 states and 1230 transitions. [2021-10-11 02:23:57,643 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:23:57,647 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1230 transitions. [2021-10-11 02:23:57,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2021-10-11 02:23:57,653 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:57,653 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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 02:23:57,654 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-11 02:23:57,654 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:23:57,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:57,655 INFO L82 PathProgramCache]: Analyzing trace with hash 236751693, now seen corresponding path program 1 times [2021-10-11 02:23:57,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:23:57,655 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703825842] [2021-10-11 02:23:57,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:23:57,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:58,171 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 143 proven. 86 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2021-10-11 02:23:58,171 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703825842] [2021-10-11 02:23:58,171 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1078250922] [2021-10-11 02:23:58,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbba1352-4be7-4ff5-b7c6-490dab6fdf5e/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 02:23:58,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:58,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:23:58,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:23:58,770 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2021-10-11 02:23:58,770 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:23:59,041 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2021-10-11 02:23:59,042 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:23:59,042 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2021-10-11 02:23:59,042 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146980570] [2021-10-11 02:23:59,043 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:23:59,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:23:59,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:23:59,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:23:59,044 INFO L87 Difference]: Start difference. First operand 997 states and 1230 transitions. Second operand 3 states. [2021-10-11 02:23:59,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:59,440 INFO L93 Difference]: Finished difference Result 2348 states and 2917 transitions. [2021-10-11 02:23:59,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:23:59,441 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 216 [2021-10-11 02:23:59,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:59,451 INFO L225 Difference]: With dead ends: 2348 [2021-10-11 02:23:59,451 INFO L226 Difference]: Without dead ends: 1352 [2021-10-11 02:23:59,453 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 435 GetRequests, 430 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 02:23:59,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1352 states. [2021-10-11 02:23:59,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1352 to 1210. [2021-10-11 02:23:59,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1210 states. [2021-10-11 02:23:59,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1210 states to 1210 states and 1521 transitions. [2021-10-11 02:23:59,496 INFO L78 Accepts]: Start accepts. Automaton has 1210 states and 1521 transitions. Word has length 216 [2021-10-11 02:23:59,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:59,497 INFO L481 AbstractCegarLoop]: Abstraction has 1210 states and 1521 transitions. [2021-10-11 02:23:59,497 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:23:59,497 INFO L276 IsEmpty]: Start isEmpty. Operand 1210 states and 1521 transitions. [2021-10-11 02:23:59,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2021-10-11 02:23:59,502 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:59,503 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2021-10-11 02:23:59,717 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-10-11 02:23:59,718 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:23:59,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:59,718 INFO L82 PathProgramCache]: Analyzing trace with hash 228350835, now seen corresponding path program 1 times [2021-10-11 02:23:59,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:23:59,718 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937715822] [2021-10-11 02:23:59,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:23:59,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:59,967 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 168 proven. 92 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-10-11 02:23:59,968 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937715822] [2021-10-11 02:23:59,968 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [351885046] [2021-10-11 02:23:59,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbba1352-4be7-4ff5-b7c6-490dab6fdf5e/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:24:00,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:00,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 515 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:24:00,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:24:00,492 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 194 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2021-10-11 02:24:00,493 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:24:00,754 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 194 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2021-10-11 02:24:00,755 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:24:00,755 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 5 [2021-10-11 02:24:00,755 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261456329] [2021-10-11 02:24:00,756 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:24:00,756 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:24:00,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:24:00,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:24:00,757 INFO L87 Difference]: Start difference. First operand 1210 states and 1521 transitions. Second operand 3 states. [2021-10-11 02:24:01,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:24:01,243 INFO L93 Difference]: Finished difference Result 2630 states and 3281 transitions. [2021-10-11 02:24:01,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:24:01,243 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 222 [2021-10-11 02:24:01,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:24:01,245 INFO L225 Difference]: With dead ends: 2630 [2021-10-11 02:24:01,245 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:24:01,248 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 447 GetRequests, 443 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:24:01,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:24:01,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:24:01,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:24:01,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:24:01,249 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 222 [2021-10-11 02:24:01,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:24:01,250 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:24:01,250 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:24:01,250 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:24:01,250 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:24:01,465 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:24:01,467 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 02:24:01,811 WARN L197 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 23 [2021-10-11 02:24:01,997 WARN L197 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 23 [2021-10-11 02:24:02,001 INFO L262 CegarLoopResult]: For program point L102(lines 102 400) no Hoare annotation was computed. [2021-10-11 02:24:02,001 INFO L262 CegarLoopResult]: For program point L598(line 598) no Hoare annotation was computed. [2021-10-11 02:24:02,001 INFO L262 CegarLoopResult]: For program point L334(lines 334 400) no Hoare annotation was computed. [2021-10-11 02:24:02,001 INFO L262 CegarLoopResult]: For program point L302(lines 302 400) no Hoare annotation was computed. [2021-10-11 02:24:02,001 INFO L262 CegarLoopResult]: For program point L170(lines 170 400) no Hoare annotation was computed. [2021-10-11 02:24:02,002 INFO L262 CegarLoopResult]: For program point L204(lines 204 400) no Hoare annotation was computed. [2021-10-11 02:24:02,002 INFO L262 CegarLoopResult]: For program point L72(lines 72 400) no Hoare annotation was computed. [2021-10-11 02:24:02,007 INFO L262 CegarLoopResult]: For program point L271(lines 271 400) no Hoare annotation was computed. [2021-10-11 02:24:02,007 INFO L262 CegarLoopResult]: For program point L139(lines 139 400) no Hoare annotation was computed. [2021-10-11 02:24:02,007 INFO L262 CegarLoopResult]: For program point L371(lines 371 400) no Hoare annotation was computed. [2021-10-11 02:24:02,007 INFO L262 CegarLoopResult]: For program point L107(lines 107 400) no Hoare annotation was computed. [2021-10-11 02:24:02,008 INFO L262 CegarLoopResult]: For program point L41(lines 41 400) no Hoare annotation was computed. [2021-10-11 02:24:02,008 INFO L262 CegarLoopResult]: For program point L339(lines 339 400) no Hoare annotation was computed. [2021-10-11 02:24:02,008 INFO L262 CegarLoopResult]: For program point L207(lines 207 400) no Hoare annotation was computed. [2021-10-11 02:24:02,009 INFO L262 CegarLoopResult]: For program point L75(lines 75 400) no Hoare annotation was computed. [2021-10-11 02:24:02,009 INFO L262 CegarLoopResult]: For program point L373(lines 373 400) no Hoare annotation was computed. [2021-10-11 02:24:02,009 INFO L262 CegarLoopResult]: For program point L241(lines 241 400) no Hoare annotation was computed. [2021-10-11 02:24:02,009 INFO L262 CegarLoopResult]: For program point L175(lines 175 400) no Hoare annotation was computed. [2021-10-11 02:24:02,009 INFO L262 CegarLoopResult]: For program point L275(lines 275 400) no Hoare annotation was computed. [2021-10-11 02:24:02,010 INFO L262 CegarLoopResult]: For program point L375(lines 375 400) no Hoare annotation was computed. [2021-10-11 02:24:02,010 INFO L262 CegarLoopResult]: For program point L309(lines 309 400) no Hoare annotation was computed. [2021-10-11 02:24:02,010 INFO L262 CegarLoopResult]: For program point L45(lines 45 400) no Hoare annotation was computed. [2021-10-11 02:24:02,010 INFO L262 CegarLoopResult]: For program point L343(lines 343 400) no Hoare annotation was computed. [2021-10-11 02:24:02,014 INFO L262 CegarLoopResult]: For program point L112(lines 112 400) no Hoare annotation was computed. [2021-10-11 02:24:02,014 INFO L262 CegarLoopResult]: For program point L575-1(lines 40 585) no Hoare annotation was computed. [2021-10-11 02:24:02,016 INFO L262 CegarLoopResult]: For program point L278(lines 278 400) no Hoare annotation was computed. [2021-10-11 02:24:02,017 INFO L262 CegarLoopResult]: For program point L146(lines 146 400) no Hoare annotation was computed. [2021-10-11 02:24:02,017 INFO L262 CegarLoopResult]: For program point L213(lines 213 400) no Hoare annotation was computed. [2021-10-11 02:24:02,017 INFO L262 CegarLoopResult]: For program point L82(lines 82 400) no Hoare annotation was computed. [2021-10-11 02:24:02,017 INFO L262 CegarLoopResult]: For program point L578-1(lines 40 585) no Hoare annotation was computed. [2021-10-11 02:24:02,017 INFO L262 CegarLoopResult]: For program point L347(lines 347 400) no Hoare annotation was computed. [2021-10-11 02:24:02,018 INFO L262 CegarLoopResult]: For program point L248(lines 248 400) no Hoare annotation was computed. [2021-10-11 02:24:02,018 INFO L262 CegarLoopResult]: For program point L579(line 579) no Hoare annotation was computed. [2021-10-11 02:24:02,018 INFO L262 CegarLoopResult]: For program point L183(lines 183 400) no Hoare annotation was computed. [2021-10-11 02:24:02,018 INFO L262 CegarLoopResult]: For program point L150(lines 150 400) no Hoare annotation was computed. [2021-10-11 02:24:02,018 INFO L262 CegarLoopResult]: For program point L382(lines 382 400) no Hoare annotation was computed. [2021-10-11 02:24:02,018 INFO L262 CegarLoopResult]: For program point L316(lines 316 400) no Hoare annotation was computed. [2021-10-11 02:24:02,018 INFO L262 CegarLoopResult]: For program point L283(lines 283 400) no Hoare annotation was computed. [2021-10-11 02:24:02,019 INFO L262 CegarLoopResult]: For program point L118(lines 118 400) no Hoare annotation was computed. [2021-10-11 02:24:02,019 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 02:24:02,020 INFO L262 CegarLoopResult]: For program point L218(lines 218 400) no Hoare annotation was computed. [2021-10-11 02:24:02,020 INFO L262 CegarLoopResult]: For program point L53(lines 53 400) no Hoare annotation was computed. [2021-10-11 02:24:02,020 INFO L262 CegarLoopResult]: For program point L154(lines 154 400) no Hoare annotation was computed. [2021-10-11 02:24:02,022 INFO L258 CegarLoopResult]: At program point L584(lines 40 585) the Hoare annotation is: (let ((.cse2 (= ~a16~0 6)) (.cse0 (<= ~a16~0 5)) (.cse4 (<= ~a8~0 13)) (.cse1 (= ~a20~0 1)) (.cse3 (not (= ~a7~0 1)))) (or (and .cse0 (not .cse1)) (and .cse0 (<= 5 ~a16~0)) (and .cse2 .cse3) (and .cse2 .cse4) (and .cse0 .cse4) (and .cse1 .cse3))) [2021-10-11 02:24:02,023 INFO L262 CegarLoopResult]: For program point L188(lines 188 400) no Hoare annotation was computed. [2021-10-11 02:24:02,023 INFO L262 CegarLoopResult]: For program point L387(lines 387 400) no Hoare annotation was computed. [2021-10-11 02:24:02,023 INFO L262 CegarLoopResult]: For program point L288(lines 288 400) no Hoare annotation was computed. [2021-10-11 02:24:02,023 INFO L262 CegarLoopResult]: For program point L255(lines 255 400) no Hoare annotation was computed. [2021-10-11 02:24:02,023 INFO L262 CegarLoopResult]: For program point L90(lines 90 400) no Hoare annotation was computed. [2021-10-11 02:24:02,024 INFO L262 CegarLoopResult]: For program point L355(lines 355 400) no Hoare annotation was computed. [2021-10-11 02:24:02,024 INFO L262 CegarLoopResult]: For program point L322(lines 322 400) no Hoare annotation was computed. [2021-10-11 02:24:02,024 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 02:24:02,024 INFO L262 CegarLoopResult]: For program point L124(lines 124 400) no Hoare annotation was computed. [2021-10-11 02:24:02,024 INFO L265 CegarLoopResult]: At program point L587(lines 587 604) the Hoare annotation is: true [2021-10-11 02:24:02,024 INFO L262 CegarLoopResult]: For program point L224(lines 224 400) no Hoare annotation was computed. [2021-10-11 02:24:02,025 INFO L262 CegarLoopResult]: For program point L158(lines 158 400) no Hoare annotation was computed. [2021-10-11 02:24:02,025 INFO L262 CegarLoopResult]: For program point L59(lines 59 400) no Hoare annotation was computed. [2021-10-11 02:24:02,025 INFO L262 CegarLoopResult]: For program point L94(lines 94 400) no Hoare annotation was computed. [2021-10-11 02:24:02,025 INFO L262 CegarLoopResult]: For program point L392(lines 392 400) no Hoare annotation was computed. [2021-10-11 02:24:02,025 INFO L262 CegarLoopResult]: For program point L326(lines 326 400) no Hoare annotation was computed. [2021-10-11 02:24:02,025 INFO L262 CegarLoopResult]: For program point L260(lines 260 400) no Hoare annotation was computed. [2021-10-11 02:24:02,025 INFO L262 CegarLoopResult]: For program point L228(lines 228 400) no Hoare annotation was computed. [2021-10-11 02:24:02,026 INFO L262 CegarLoopResult]: For program point L162(lines 162 400) no Hoare annotation was computed. [2021-10-11 02:24:02,026 INFO L262 CegarLoopResult]: For program point L129(lines 129 400) no Hoare annotation was computed. [2021-10-11 02:24:02,026 INFO L262 CegarLoopResult]: For program point L328(lines 328 400) no Hoare annotation was computed. [2021-10-11 02:24:02,026 INFO L262 CegarLoopResult]: For program point L196(lines 196 400) no Hoare annotation was computed. [2021-10-11 02:24:02,026 INFO L262 CegarLoopResult]: For program point L64(lines 64 400) no Hoare annotation was computed. [2021-10-11 02:24:02,027 INFO L258 CegarLoopResult]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse2 (= ~a16~0 6)) (.cse0 (<= ~a16~0 5)) (.cse4 (<= ~a8~0 13)) (.cse1 (= ~a20~0 1)) (.cse3 (not (= ~a7~0 1)))) (or (and .cse0 (not .cse1)) (and .cse0 (<= 5 ~a16~0)) (and .cse2 .cse3) (and .cse2 .cse4) (and .cse0 .cse4) (and .cse1 .cse3))) [2021-10-11 02:24:02,027 INFO L262 CegarLoopResult]: For program point L296(lines 296 400) no Hoare annotation was computed. [2021-10-11 02:24:02,028 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 579) no Hoare annotation was computed. [2021-10-11 02:24:02,028 INFO L262 CegarLoopResult]: For program point L363(lines 363 400) no Hoare annotation was computed. [2021-10-11 02:24:02,028 INFO L262 CegarLoopResult]: For program point L199(lines 199 400) no Hoare annotation was computed. [2021-10-11 02:24:02,029 INFO L262 CegarLoopResult]: For program point L365(lines 365 400) no Hoare annotation was computed. [2021-10-11 02:24:02,029 INFO L262 CegarLoopResult]: For program point L266(lines 266 400) no Hoare annotation was computed. [2021-10-11 02:24:02,029 INFO L262 CegarLoopResult]: For program point L233(lines 233 400) no Hoare annotation was computed. [2021-10-11 02:24:02,029 INFO L262 CegarLoopResult]: For program point L134(lines 134 400) no Hoare annotation was computed. [2021-10-11 02:24:02,061 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:24:02 BoogieIcfgContainer [2021-10-11 02:24:02,062 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:24:02,062 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:24:02,063 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:24:02,063 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:24:02,063 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:23:48" (3/4) ... [2021-10-11 02:24:02,067 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:24:02,113 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 102 nodes and edges [2021-10-11 02:24:02,117 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2021-10-11 02:24:02,119 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2021-10-11 02:24:02,121 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-10-11 02:24:02,319 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbba1352-4be7-4ff5-b7c6-490dab6fdf5e/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:24:02,319 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:24:02,321 INFO L168 Benchmark]: Toolchain (without parser) took 17828.23 ms. Allocated memory was 98.6 MB in the beginning and 329.3 MB in the end (delta: 230.7 MB). Free memory was 67.7 MB in the beginning and 248.1 MB in the end (delta: -180.4 MB). Peak memory consumption was 50.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:02,321 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 98.6 MB. Free memory is still 52.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:24:02,322 INFO L168 Benchmark]: CACSL2BoogieTranslator took 763.60 ms. Allocated memory was 98.6 MB in the beginning and 130.0 MB in the end (delta: 31.5 MB). Free memory was 67.3 MB in the beginning and 88.7 MB in the end (delta: -21.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:02,323 INFO L168 Benchmark]: Boogie Procedure Inliner took 118.80 ms. Allocated memory is still 130.0 MB. Free memory was 88.7 MB in the beginning and 83.1 MB in the end (delta: 5.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:02,323 INFO L168 Benchmark]: Boogie Preprocessor took 94.14 ms. Allocated memory is still 130.0 MB. Free memory was 83.1 MB in the beginning and 78.9 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:02,324 INFO L168 Benchmark]: RCFGBuilder took 3378.55 ms. Allocated memory is still 130.0 MB. Free memory was 78.9 MB in the beginning and 66.1 MB in the end (delta: 12.8 MB). Peak memory consumption was 48.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:02,324 INFO L168 Benchmark]: TraceAbstraction took 13208.64 ms. Allocated memory was 130.0 MB in the beginning and 329.3 MB in the end (delta: 199.2 MB). Free memory was 66.1 MB in the beginning and 264.0 MB in the end (delta: -197.9 MB). Peak memory consumption was 165.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:02,325 INFO L168 Benchmark]: Witness Printer took 256.71 ms. Allocated memory is still 329.3 MB. Free memory was 264.0 MB in the beginning and 249.1 MB in the end (delta: 14.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:02,328 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 98.6 MB. Free memory is still 52.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 763.60 ms. Allocated memory was 98.6 MB in the beginning and 130.0 MB in the end (delta: 31.5 MB). Free memory was 67.3 MB in the beginning and 88.7 MB in the end (delta: -21.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 118.80 ms. Allocated memory is still 130.0 MB. Free memory was 88.7 MB in the beginning and 83.1 MB in the end (delta: 5.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 94.14 ms. Allocated memory is still 130.0 MB. Free memory was 83.1 MB in the beginning and 78.9 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 3378.55 ms. Allocated memory is still 130.0 MB. Free memory was 78.9 MB in the beginning and 66.1 MB in the end (delta: 12.8 MB). Peak memory consumption was 48.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 13208.64 ms. Allocated memory was 130.0 MB in the beginning and 329.3 MB in the end (delta: 199.2 MB). Free memory was 66.1 MB in the beginning and 264.0 MB in the end (delta: -197.9 MB). Peak memory consumption was 165.2 MB. Max. memory is 16.1 GB. * Witness Printer took 256.71 ms. Allocated memory is still 329.3 MB. Free memory was 264.0 MB in the beginning and 249.1 MB in the end (delta: 14.8 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: 579]: 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)) || (a16 <= 5 && 5 <= a16)) || (a16 == 6 && !(a7 == 1))) || (a16 == 6 && a8 <= 13)) || (a16 <= 5 && a8 <= 13)) || (a20 == 1 && !(a7 == 1)) - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: (((((a16 <= 5 && !(a20 == 1)) || (a16 <= 5 && 5 <= a16)) || (a16 == 6 && !(a7 == 1))) || (a16 == 6 && a8 <= 13)) || (a16 <= 5 && a8 <= 13)) || (a20 == 1 && !(a7 == 1)) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 12.5s, OverallIterations: 11, TraceHistogramMax: 7, AutomataDifference: 6.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 562 SDtfs, 1020 SDslu, 71 SDs, 0 SdLazy, 2974 SolverSat, 749 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 913 GetRequests, 887 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1210occurred 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, 663 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 48 NumberOfFragments, 93 HoareAnnotationTreeSize, 3 FomulaSimplifications, 12340 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 3 FomulaSimplificationsInter, 562 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 2.8s InterpolantComputationTime, 2013 NumberOfCodeBlocks, 2013 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 2436 ConstructedInterpolants, 0 QuantifiedInterpolants, 1506925 SizeOfPredicates, 0 NumberOfNonLiveVariables, 994 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 15 InterpolantComputations, 13 PerfectInterpolantSequences, 2550/2728 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...