./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label59.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_cb420dc9-4325-4014-aca8-17892734acaa/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb420dc9-4325-4014-aca8-17892734acaa/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_cb420dc9-4325-4014-aca8-17892734acaa/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb420dc9-4325-4014-aca8-17892734acaa/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label59.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb420dc9-4325-4014-aca8-17892734acaa/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_cb420dc9-4325-4014-aca8-17892734acaa/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 32dcd17dd6150ce526d1225c284848d771c5c1e8 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 02:33:11,883 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:33:11,886 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:33:11,916 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:33:11,917 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:33:11,918 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:33:11,920 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:33:11,922 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:33:11,924 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:33:11,926 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:33:11,927 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:33:11,929 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:33:11,929 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:33:11,931 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:33:11,932 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:33:11,934 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:33:11,935 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:33:11,936 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:33:11,939 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:33:11,941 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:33:11,943 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:33:11,945 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:33:11,946 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:33:11,948 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:33:11,951 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:33:11,952 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:33:11,952 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:33:11,953 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:33:11,954 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:33:11,955 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:33:11,955 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:33:11,956 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:33:11,957 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:33:11,958 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:33:11,959 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:33:11,960 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:33:11,961 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:33:11,961 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:33:11,962 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:33:11,963 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:33:11,964 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:33:11,965 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb420dc9-4325-4014-aca8-17892734acaa/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:33:11,988 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:33:11,991 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:33:11,992 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:33:11,992 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:33:11,994 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:33:11,995 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:33:11,995 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:33:11,995 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:33:11,996 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:33:12,000 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:33:12,000 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:33:12,000 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:33:12,000 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:33:12,001 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:33:12,001 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:33:12,002 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:33:12,002 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:33:12,002 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:33:12,002 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:33:12,003 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:33:12,003 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:33:12,003 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:33:12,003 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:33:12,003 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:33:12,005 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:33:12,005 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:33:12,005 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:33:12,006 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:33:12,006 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:33:12,007 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:33:12,008 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:33:12,008 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:33:12,008 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:33:12,008 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:33:12,009 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:33:12,009 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:33:12,009 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:33:12,009 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:33:12,010 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:33:12,010 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_cb420dc9-4325-4014-aca8-17892734acaa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb420dc9-4325-4014-aca8-17892734acaa/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 32dcd17dd6150ce526d1225c284848d771c5c1e8 [2021-10-11 02:33:12,236 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:33:12,257 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:33:12,260 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:33:12,261 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:33:12,262 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:33:12,263 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb420dc9-4325-4014-aca8-17892734acaa/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/eca-rers2012/Problem01_label59.c [2021-10-11 02:33:12,366 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb420dc9-4325-4014-aca8-17892734acaa/bin/utaipan-WLngWcDbfI/data/8b1920930/1d30319eafe84de4a395634d80d07ae7/FLAGddad33e96 [2021-10-11 02:33:12,932 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:33:12,933 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb420dc9-4325-4014-aca8-17892734acaa/sv-benchmarks/c/eca-rers2012/Problem01_label59.c [2021-10-11 02:33:12,961 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb420dc9-4325-4014-aca8-17892734acaa/bin/utaipan-WLngWcDbfI/data/8b1920930/1d30319eafe84de4a395634d80d07ae7/FLAGddad33e96 [2021-10-11 02:33:13,206 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb420dc9-4325-4014-aca8-17892734acaa/bin/utaipan-WLngWcDbfI/data/8b1920930/1d30319eafe84de4a395634d80d07ae7 [2021-10-11 02:33:13,209 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:33:13,210 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:33:13,212 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:33:13,212 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:33:13,215 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:33:13,216 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:33:13" (1/1) ... [2021-10-11 02:33:13,218 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c68e0ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:13, skipping insertion in model container [2021-10-11 02:33:13,218 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:33:13" (1/1) ... [2021-10-11 02:33:13,225 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:33:13,278 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:33:13,635 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_cb420dc9-4325-4014-aca8-17892734acaa/sv-benchmarks/c/eca-rers2012/Problem01_label59.c[16624,16637] [2021-10-11 02:33:13,693 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:33:13,701 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:33:13,830 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_cb420dc9-4325-4014-aca8-17892734acaa/sv-benchmarks/c/eca-rers2012/Problem01_label59.c[16624,16637] [2021-10-11 02:33:13,855 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:33:13,873 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:33:13,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:13 WrapperNode [2021-10-11 02:33:13,875 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:33:13,876 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:33:13,877 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:33:13,877 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:33:13,884 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:13" (1/1) ... [2021-10-11 02:33:13,913 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:13" (1/1) ... [2021-10-11 02:33:13,960 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:33:13,960 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:33:13,961 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:33:13,961 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:33:13,969 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:13" (1/1) ... [2021-10-11 02:33:13,970 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:13" (1/1) ... [2021-10-11 02:33:13,975 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:13" (1/1) ... [2021-10-11 02:33:13,975 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:13" (1/1) ... [2021-10-11 02:33:13,997 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:13" (1/1) ... [2021-10-11 02:33:14,012 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:13" (1/1) ... [2021-10-11 02:33:14,019 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:13" (1/1) ... [2021-10-11 02:33:14,042 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:33:14,043 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:33:14,043 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:33:14,044 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:33:14,045 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:13" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb420dc9-4325-4014-aca8-17892734acaa/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 02:33:14,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:33:14,144 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:33:14,144 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:33:14,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:33:16,042 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:33:16,043 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-11 02:33:16,047 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:33:16 BoogieIcfgContainer [2021-10-11 02:33:16,048 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:33:16,051 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:33:16,052 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:33:16,055 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:33:16,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:33:13" (1/3) ... [2021-10-11 02:33:16,057 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7674514a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:33:16, skipping insertion in model container [2021-10-11 02:33:16,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:13" (2/3) ... [2021-10-11 02:33:16,057 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7674514a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:33:16, skipping insertion in model container [2021-10-11 02:33:16,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:33:16" (3/3) ... [2021-10-11 02:33:16,059 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label59.c [2021-10-11 02:33:16,076 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:33:16,086 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:33:16,098 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 02:33:16,135 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:33:16,135 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:33:16,135 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:33:16,135 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:33:16,135 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:33:16,135 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:33:16,135 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:33:16,136 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:33:16,153 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2021-10-11 02:33:16,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-10-11 02:33:16,165 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:33:16,165 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 02:33:16,167 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:33:16,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:33:16,175 INFO L82 PathProgramCache]: Analyzing trace with hash -1806914904, now seen corresponding path program 1 times [2021-10-11 02:33:16,184 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:33:16,185 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568718614] [2021-10-11 02:33:16,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:33:16,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:33:16,615 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 02:33:16,616 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568718614] [2021-10-11 02:33:16,617 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:33:16,617 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:33:16,618 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019323826] [2021-10-11 02:33:16,622 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:33:16,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:33:16,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:33:16,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:33:16,636 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 3 states. [2021-10-11 02:33:17,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:33:17,212 INFO L93 Difference]: Finished difference Result 224 states and 428 transitions. [2021-10-11 02:33:17,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:33:17,214 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 71 [2021-10-11 02:33:17,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:33:17,241 INFO L225 Difference]: With dead ends: 224 [2021-10-11 02:33:17,245 INFO L226 Difference]: Without dead ends: 145 [2021-10-11 02:33:17,252 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:33:17,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-10-11 02:33:17,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2021-10-11 02:33:17,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2021-10-11 02:33:17,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 265 transitions. [2021-10-11 02:33:17,303 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 265 transitions. Word has length 71 [2021-10-11 02:33:17,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:33:17,303 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 265 transitions. [2021-10-11 02:33:17,303 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:33:17,304 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 265 transitions. [2021-10-11 02:33:17,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-10-11 02:33:17,307 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:33:17,307 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:33:17,308 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:33:17,308 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:33:17,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:33:17,309 INFO L82 PathProgramCache]: Analyzing trace with hash -1034859397, now seen corresponding path program 1 times [2021-10-11 02:33:17,309 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:33:17,309 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415917475] [2021-10-11 02:33:17,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:33:17,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:33:17,399 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:33:17,400 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415917475] [2021-10-11 02:33:17,400 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:33:17,400 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:33:17,400 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319315281] [2021-10-11 02:33:17,402 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:33:17,402 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:33:17,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:33:17,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:33:17,403 INFO L87 Difference]: Start difference. First operand 145 states and 265 transitions. Second operand 3 states. [2021-10-11 02:33:17,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:33:17,869 INFO L93 Difference]: Finished difference Result 431 states and 792 transitions. [2021-10-11 02:33:17,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:33:17,870 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2021-10-11 02:33:17,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:33:17,879 INFO L225 Difference]: With dead ends: 431 [2021-10-11 02:33:17,880 INFO L226 Difference]: Without dead ends: 287 [2021-10-11 02:33:17,882 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:33:17,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2021-10-11 02:33:17,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2021-10-11 02:33:17,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2021-10-11 02:33:17,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 486 transitions. [2021-10-11 02:33:17,917 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 486 transitions. Word has length 77 [2021-10-11 02:33:17,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:33:17,917 INFO L481 AbstractCegarLoop]: Abstraction has 287 states and 486 transitions. [2021-10-11 02:33:17,917 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:33:17,918 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 486 transitions. [2021-10-11 02:33:17,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-10-11 02:33:17,927 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:33:17,927 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 02:33:17,927 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:33:17,928 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:33:17,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:33:17,928 INFO L82 PathProgramCache]: Analyzing trace with hash -1703780039, now seen corresponding path program 1 times [2021-10-11 02:33:17,929 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:33:17,930 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368586047] [2021-10-11 02:33:17,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:33:18,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:33:18,162 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 02:33:18,162 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368586047] [2021-10-11 02:33:18,163 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:33:18,163 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:33:18,163 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449864374] [2021-10-11 02:33:18,164 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:33:18,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:33:18,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:33:18,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:33:18,165 INFO L87 Difference]: Start difference. First operand 287 states and 486 transitions. Second operand 3 states. [2021-10-11 02:33:18,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:33:18,628 INFO L93 Difference]: Finished difference Result 786 states and 1330 transitions. [2021-10-11 02:33:18,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:33:18,629 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 78 [2021-10-11 02:33:18,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:33:18,637 INFO L225 Difference]: With dead ends: 786 [2021-10-11 02:33:18,637 INFO L226 Difference]: Without dead ends: 500 [2021-10-11 02:33:18,641 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 02:33:18,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2021-10-11 02:33:18,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 358. [2021-10-11 02:33:18,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 358 states. [2021-10-11 02:33:18,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 581 transitions. [2021-10-11 02:33:18,681 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 581 transitions. Word has length 78 [2021-10-11 02:33:18,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:33:18,681 INFO L481 AbstractCegarLoop]: Abstraction has 358 states and 581 transitions. [2021-10-11 02:33:18,681 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:33:18,682 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 581 transitions. [2021-10-11 02:33:18,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-10-11 02:33:18,683 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:33:18,683 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:33:18,683 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 02:33:18,684 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:33:18,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:33:18,684 INFO L82 PathProgramCache]: Analyzing trace with hash -358266582, now seen corresponding path program 1 times [2021-10-11 02:33:18,684 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:33:18,685 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816872574] [2021-10-11 02:33:18,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:33:18,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:33:18,754 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:33:18,754 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816872574] [2021-10-11 02:33:18,755 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:33:18,755 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:33:18,755 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53864740] [2021-10-11 02:33:18,755 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:33:18,756 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:33:18,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:33:18,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:33:18,757 INFO L87 Difference]: Start difference. First operand 358 states and 581 transitions. Second operand 3 states. [2021-10-11 02:33:19,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:33:19,186 INFO L93 Difference]: Finished difference Result 786 states and 1256 transitions. [2021-10-11 02:33:19,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:33:19,192 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 84 [2021-10-11 02:33:19,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:33:19,195 INFO L225 Difference]: With dead ends: 786 [2021-10-11 02:33:19,195 INFO L226 Difference]: Without dead ends: 358 [2021-10-11 02:33:19,196 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:33:19,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2021-10-11 02:33:19,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 358. [2021-10-11 02:33:19,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 358 states. [2021-10-11 02:33:19,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 476 transitions. [2021-10-11 02:33:19,208 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 476 transitions. Word has length 84 [2021-10-11 02:33:19,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:33:19,208 INFO L481 AbstractCegarLoop]: Abstraction has 358 states and 476 transitions. [2021-10-11 02:33:19,209 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:33:19,209 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 476 transitions. [2021-10-11 02:33:19,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-10-11 02:33:19,210 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:33:19,210 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:33:19,211 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 02:33:19,211 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:33:19,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:33:19,211 INFO L82 PathProgramCache]: Analyzing trace with hash 1572558450, now seen corresponding path program 1 times [2021-10-11 02:33:19,212 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:33:19,212 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030724014] [2021-10-11 02:33:19,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:33:19,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:33:19,277 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-11 02:33:19,278 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030724014] [2021-10-11 02:33:19,278 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:33:19,278 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:33:19,279 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637643747] [2021-10-11 02:33:19,279 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:33:19,279 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:33:19,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:33:19,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:33:19,280 INFO L87 Difference]: Start difference. First operand 358 states and 476 transitions. Second operand 3 states. [2021-10-11 02:33:19,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:33:19,647 INFO L93 Difference]: Finished difference Result 999 states and 1333 transitions. [2021-10-11 02:33:19,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:33:19,648 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 88 [2021-10-11 02:33:19,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:33:19,652 INFO L225 Difference]: With dead ends: 999 [2021-10-11 02:33:19,652 INFO L226 Difference]: Without dead ends: 642 [2021-10-11 02:33:19,653 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:33:19,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2021-10-11 02:33:19,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 571. [2021-10-11 02:33:19,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 571 states. [2021-10-11 02:33:19,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 722 transitions. [2021-10-11 02:33:19,689 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 722 transitions. Word has length 88 [2021-10-11 02:33:19,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:33:19,689 INFO L481 AbstractCegarLoop]: Abstraction has 571 states and 722 transitions. [2021-10-11 02:33:19,689 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:33:19,689 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 722 transitions. [2021-10-11 02:33:19,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-10-11 02:33:19,697 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:33:19,697 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 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] [2021-10-11 02:33:19,697 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-11 02:33:19,697 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:33:19,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:33:19,698 INFO L82 PathProgramCache]: Analyzing trace with hash -169376298, now seen corresponding path program 1 times [2021-10-11 02:33:19,698 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:33:19,698 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082958284] [2021-10-11 02:33:19,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:33:19,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:33:19,794 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-10-11 02:33:19,810 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082958284] [2021-10-11 02:33:19,810 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:33:19,810 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:33:19,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693506486] [2021-10-11 02:33:19,811 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:33:19,811 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:33:19,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:33:19,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:33:19,812 INFO L87 Difference]: Start difference. First operand 571 states and 722 transitions. Second operand 3 states. [2021-10-11 02:33:20,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:33:20,201 INFO L93 Difference]: Finished difference Result 1425 states and 1805 transitions. [2021-10-11 02:33:20,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:33:20,206 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 97 [2021-10-11 02:33:20,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:33:20,211 INFO L225 Difference]: With dead ends: 1425 [2021-10-11 02:33:20,212 INFO L226 Difference]: Without dead ends: 855 [2021-10-11 02:33:20,213 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 02:33:20,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2021-10-11 02:33:20,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 713. [2021-10-11 02:33:20,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 713 states. [2021-10-11 02:33:20,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 910 transitions. [2021-10-11 02:33:20,246 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 910 transitions. Word has length 97 [2021-10-11 02:33:20,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:33:20,254 INFO L481 AbstractCegarLoop]: Abstraction has 713 states and 910 transitions. [2021-10-11 02:33:20,254 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:33:20,254 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 910 transitions. [2021-10-11 02:33:20,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-10-11 02:33:20,257 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:33:20,258 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:33:20,258 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-11 02:33:20,258 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:33:20,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:33:20,265 INFO L82 PathProgramCache]: Analyzing trace with hash -801261310, now seen corresponding path program 1 times [2021-10-11 02:33:20,265 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:33:20,265 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257564894] [2021-10-11 02:33:20,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:33:20,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:33:20,359 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:33:20,360 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257564894] [2021-10-11 02:33:20,360 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:33:20,360 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:33:20,360 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488624047] [2021-10-11 02:33:20,361 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:33:20,362 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:33:20,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:33:20,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:33:20,363 INFO L87 Difference]: Start difference. First operand 713 states and 910 transitions. Second operand 3 states. [2021-10-11 02:33:20,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:33:20,711 INFO L93 Difference]: Finished difference Result 1567 states and 1989 transitions. [2021-10-11 02:33:20,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:33:20,711 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 100 [2021-10-11 02:33:20,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:33:20,716 INFO L225 Difference]: With dead ends: 1567 [2021-10-11 02:33:20,716 INFO L226 Difference]: Without dead ends: 855 [2021-10-11 02:33:20,718 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:33:20,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2021-10-11 02:33:20,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 855. [2021-10-11 02:33:20,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 855 states. [2021-10-11 02:33:20,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1066 transitions. [2021-10-11 02:33:20,742 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1066 transitions. Word has length 100 [2021-10-11 02:33:20,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:33:20,743 INFO L481 AbstractCegarLoop]: Abstraction has 855 states and 1066 transitions. [2021-10-11 02:33:20,743 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:33:20,743 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1066 transitions. [2021-10-11 02:33:20,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-10-11 02:33:20,745 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:33:20,745 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:33:20,746 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-11 02:33:20,746 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:33:20,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:33:20,746 INFO L82 PathProgramCache]: Analyzing trace with hash -1486866870, now seen corresponding path program 1 times [2021-10-11 02:33:20,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:33:20,747 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303501577] [2021-10-11 02:33:20,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:33:20,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:33:20,844 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:33:20,845 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303501577] [2021-10-11 02:33:20,845 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:33:20,845 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:33:20,845 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169087380] [2021-10-11 02:33:20,846 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:33:20,846 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:33:20,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:33:20,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:33:20,847 INFO L87 Difference]: Start difference. First operand 855 states and 1066 transitions. Second operand 4 states. [2021-10-11 02:33:21,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:33:21,338 INFO L93 Difference]: Finished difference Result 1780 states and 2235 transitions. [2021-10-11 02:33:21,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:33:21,340 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 104 [2021-10-11 02:33:21,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:33:21,347 INFO L225 Difference]: With dead ends: 1780 [2021-10-11 02:33:21,347 INFO L226 Difference]: Without dead ends: 997 [2021-10-11 02:33:21,349 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 02:33:21,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2021-10-11 02:33:21,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 926. [2021-10-11 02:33:21,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 926 states. [2021-10-11 02:33:21,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1140 transitions. [2021-10-11 02:33:21,375 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1140 transitions. Word has length 104 [2021-10-11 02:33:21,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:33:21,377 INFO L481 AbstractCegarLoop]: Abstraction has 926 states and 1140 transitions. [2021-10-11 02:33:21,377 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:33:21,377 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1140 transitions. [2021-10-11 02:33:21,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-10-11 02:33:21,380 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:33:21,380 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:33:21,380 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-11 02:33:21,380 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:33:21,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:33:21,381 INFO L82 PathProgramCache]: Analyzing trace with hash -1163051849, now seen corresponding path program 1 times [2021-10-11 02:33:21,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:33:21,381 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635840539] [2021-10-11 02:33:21,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:33:21,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:33:21,483 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:33:21,483 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635840539] [2021-10-11 02:33:21,484 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:33:21,484 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:33:21,485 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663480839] [2021-10-11 02:33:21,485 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:33:21,486 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:33:21,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:33:21,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:33:21,487 INFO L87 Difference]: Start difference. First operand 926 states and 1140 transitions. Second operand 3 states. [2021-10-11 02:33:21,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:33:21,870 INFO L93 Difference]: Finished difference Result 1851 states and 2297 transitions. [2021-10-11 02:33:21,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:33:21,870 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 130 [2021-10-11 02:33:21,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:33:21,876 INFO L225 Difference]: With dead ends: 1851 [2021-10-11 02:33:21,876 INFO L226 Difference]: Without dead ends: 997 [2021-10-11 02:33:21,878 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 02:33:21,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2021-10-11 02:33:21,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 926. [2021-10-11 02:33:21,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 926 states. [2021-10-11 02:33:21,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1086 transitions. [2021-10-11 02:33:21,903 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1086 transitions. Word has length 130 [2021-10-11 02:33:21,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:33:21,904 INFO L481 AbstractCegarLoop]: Abstraction has 926 states and 1086 transitions. [2021-10-11 02:33:21,904 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:33:21,904 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1086 transitions. [2021-10-11 02:33:21,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-10-11 02:33:21,907 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:33:21,907 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 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 02:33:21,907 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-11 02:33:21,907 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:33:21,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:33:21,908 INFO L82 PathProgramCache]: Analyzing trace with hash 1629846970, now seen corresponding path program 1 times [2021-10-11 02:33:21,908 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:33:21,908 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994838313] [2021-10-11 02:33:21,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:33:21,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:33:22,040 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-10-11 02:33:22,040 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994838313] [2021-10-11 02:33:22,040 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:33:22,040 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:33:22,041 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259522826] [2021-10-11 02:33:22,041 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:33:22,041 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:33:22,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:33:22,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:33:22,042 INFO L87 Difference]: Start difference. First operand 926 states and 1086 transitions. Second operand 3 states. [2021-10-11 02:33:22,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:33:22,405 INFO L93 Difference]: Finished difference Result 1851 states and 2184 transitions. [2021-10-11 02:33:22,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:33:22,406 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 143 [2021-10-11 02:33:22,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:33:22,412 INFO L225 Difference]: With dead ends: 1851 [2021-10-11 02:33:22,412 INFO L226 Difference]: Without dead ends: 997 [2021-10-11 02:33:22,413 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 02:33:22,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2021-10-11 02:33:22,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 926. [2021-10-11 02:33:22,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 926 states. [2021-10-11 02:33:22,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1052 transitions. [2021-10-11 02:33:22,437 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1052 transitions. Word has length 143 [2021-10-11 02:33:22,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:33:22,438 INFO L481 AbstractCegarLoop]: Abstraction has 926 states and 1052 transitions. [2021-10-11 02:33:22,438 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:33:22,438 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1052 transitions. [2021-10-11 02:33:22,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-10-11 02:33:22,441 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:33:22,442 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 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 02:33:22,442 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-11 02:33:22,442 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:33:22,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:33:22,442 INFO L82 PathProgramCache]: Analyzing trace with hash -2138961210, now seen corresponding path program 1 times [2021-10-11 02:33:22,443 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:33:22,443 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849394126] [2021-10-11 02:33:22,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:33:22,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:33:22,569 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 120 proven. 11 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-10-11 02:33:22,569 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849394126] [2021-10-11 02:33:22,569 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1282939025] [2021-10-11 02:33:22,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb420dc9-4325-4014-aca8-17892734acaa/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 02:33:22,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:33:22,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:33:22,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:33:23,113 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2021-10-11 02:33:23,113 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:33:23,286 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2021-10-11 02:33:23,286 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:33:23,286 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 5 [2021-10-11 02:33:23,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864094725] [2021-10-11 02:33:23,288 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:33:23,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:33:23,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:33:23,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:33:23,289 INFO L87 Difference]: Start difference. First operand 926 states and 1052 transitions. Second operand 3 states. [2021-10-11 02:33:23,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:33:23,694 INFO L93 Difference]: Finished difference Result 2062 states and 2363 transitions. [2021-10-11 02:33:23,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:33:23,695 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 172 [2021-10-11 02:33:23,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:33:23,696 INFO L225 Difference]: With dead ends: 2062 [2021-10-11 02:33:23,696 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:33:23,698 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 342 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 02:33:23,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:33:23,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:33:23,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:33:23,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:33:23,699 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 172 [2021-10-11 02:33:23,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:33:23,700 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:33:23,700 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:33:23,700 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:33:23,700 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:33:23,914 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-10-11 02:33:23,915 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 02:33:24,133 WARN L197 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 28 [2021-10-11 02:33:24,300 WARN L197 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 28 [2021-10-11 02:33:24,304 INFO L262 CegarLoopResult]: For program point L102(lines 102 400) no Hoare annotation was computed. [2021-10-11 02:33:24,304 INFO L262 CegarLoopResult]: For program point L598(line 598) no Hoare annotation was computed. [2021-10-11 02:33:24,304 INFO L262 CegarLoopResult]: For program point L334(lines 334 400) no Hoare annotation was computed. [2021-10-11 02:33:24,304 INFO L262 CegarLoopResult]: For program point L302(lines 302 400) no Hoare annotation was computed. [2021-10-11 02:33:24,304 INFO L262 CegarLoopResult]: For program point L170(lines 170 400) no Hoare annotation was computed. [2021-10-11 02:33:24,305 INFO L262 CegarLoopResult]: For program point L204(lines 204 400) no Hoare annotation was computed. [2021-10-11 02:33:24,305 INFO L262 CegarLoopResult]: For program point L72(lines 72 400) no Hoare annotation was computed. [2021-10-11 02:33:24,305 INFO L262 CegarLoopResult]: For program point L271(lines 271 400) no Hoare annotation was computed. [2021-10-11 02:33:24,305 INFO L262 CegarLoopResult]: For program point L139(lines 139 400) no Hoare annotation was computed. [2021-10-11 02:33:24,305 INFO L262 CegarLoopResult]: For program point L371(lines 371 400) no Hoare annotation was computed. [2021-10-11 02:33:24,305 INFO L262 CegarLoopResult]: For program point L107(lines 107 400) no Hoare annotation was computed. [2021-10-11 02:33:24,305 INFO L262 CegarLoopResult]: For program point L41(lines 41 400) no Hoare annotation was computed. [2021-10-11 02:33:24,305 INFO L262 CegarLoopResult]: For program point L339(lines 339 400) no Hoare annotation was computed. [2021-10-11 02:33:24,306 INFO L262 CegarLoopResult]: For program point L207(lines 207 400) no Hoare annotation was computed. [2021-10-11 02:33:24,306 INFO L262 CegarLoopResult]: For program point L75(lines 75 400) no Hoare annotation was computed. [2021-10-11 02:33:24,306 INFO L262 CegarLoopResult]: For program point L373(lines 373 400) no Hoare annotation was computed. [2021-10-11 02:33:24,306 INFO L262 CegarLoopResult]: For program point L241(lines 241 400) no Hoare annotation was computed. [2021-10-11 02:33:24,306 INFO L262 CegarLoopResult]: For program point L175(lines 175 400) no Hoare annotation was computed. [2021-10-11 02:33:24,306 INFO L262 CegarLoopResult]: For program point L275(lines 275 400) no Hoare annotation was computed. [2021-10-11 02:33:24,306 INFO L262 CegarLoopResult]: For program point L375(lines 375 400) no Hoare annotation was computed. [2021-10-11 02:33:24,307 INFO L262 CegarLoopResult]: For program point L309(lines 309 400) no Hoare annotation was computed. [2021-10-11 02:33:24,307 INFO L262 CegarLoopResult]: For program point L45(lines 45 400) no Hoare annotation was computed. [2021-10-11 02:33:24,307 INFO L262 CegarLoopResult]: For program point L343(lines 343 400) no Hoare annotation was computed. [2021-10-11 02:33:24,307 INFO L262 CegarLoopResult]: For program point L112(lines 112 400) no Hoare annotation was computed. [2021-10-11 02:33:24,307 INFO L262 CegarLoopResult]: For program point L278(lines 278 400) no Hoare annotation was computed. [2021-10-11 02:33:24,307 INFO L262 CegarLoopResult]: For program point L146(lines 146 400) no Hoare annotation was computed. [2021-10-11 02:33:24,307 INFO L262 CegarLoopResult]: For program point L213(lines 213 400) no Hoare annotation was computed. [2021-10-11 02:33:24,307 INFO L262 CegarLoopResult]: For program point L82(lines 82 400) no Hoare annotation was computed. [2021-10-11 02:33:24,308 INFO L262 CegarLoopResult]: For program point L347(lines 347 400) no Hoare annotation was computed. [2021-10-11 02:33:24,308 INFO L262 CegarLoopResult]: For program point L248(lines 248 400) no Hoare annotation was computed. [2021-10-11 02:33:24,308 INFO L262 CegarLoopResult]: For program point L183(lines 183 400) no Hoare annotation was computed. [2021-10-11 02:33:24,308 INFO L262 CegarLoopResult]: For program point L150(lines 150 400) no Hoare annotation was computed. [2021-10-11 02:33:24,308 INFO L262 CegarLoopResult]: For program point L382(lines 382 400) no Hoare annotation was computed. [2021-10-11 02:33:24,308 INFO L262 CegarLoopResult]: For program point L316(lines 316 400) no Hoare annotation was computed. [2021-10-11 02:33:24,308 INFO L262 CegarLoopResult]: For program point L283(lines 283 400) no Hoare annotation was computed. [2021-10-11 02:33:24,308 INFO L262 CegarLoopResult]: For program point L118(lines 118 400) no Hoare annotation was computed. [2021-10-11 02:33:24,309 INFO L262 CegarLoopResult]: For program point L449-1(lines 40 585) no Hoare annotation was computed. [2021-10-11 02:33:24,309 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 02:33:24,309 INFO L262 CegarLoopResult]: For program point L218(lines 218 400) no Hoare annotation was computed. [2021-10-11 02:33:24,309 INFO L262 CegarLoopResult]: For program point L53(lines 53 400) no Hoare annotation was computed. [2021-10-11 02:33:24,309 INFO L262 CegarLoopResult]: For program point L154(lines 154 400) no Hoare annotation was computed. [2021-10-11 02:33:24,310 INFO L258 CegarLoopResult]: At program point L584(lines 40 585) the Hoare annotation is: (let ((.cse1 (= ~a17~0 0)) (.cse3 (= ~a21~0 1)) (.cse4 (= ~a17~0 1)) (.cse2 (not (= ~a20~0 1))) (.cse0 (<= ~a8~0 13))) (or (and .cse0 .cse1) (and .cse2 .cse1) (and .cse3 .cse0) (and (<= ~a8~0 14) .cse3 .cse4) (and .cse0 .cse4) (and .cse3 (<= 5 ~a16~0) .cse4) (and .cse3 .cse1) (and .cse3 .cse2 .cse4) (and .cse2 .cse0))) [2021-10-11 02:33:24,310 INFO L262 CegarLoopResult]: For program point L452-1(lines 40 585) no Hoare annotation was computed. [2021-10-11 02:33:24,310 INFO L262 CegarLoopResult]: For program point L188(lines 188 400) no Hoare annotation was computed. [2021-10-11 02:33:24,310 INFO L262 CegarLoopResult]: For program point L453(line 453) no Hoare annotation was computed. [2021-10-11 02:33:24,310 INFO L262 CegarLoopResult]: For program point L387(lines 387 400) no Hoare annotation was computed. [2021-10-11 02:33:24,310 INFO L262 CegarLoopResult]: For program point L288(lines 288 400) no Hoare annotation was computed. [2021-10-11 02:33:24,310 INFO L262 CegarLoopResult]: For program point L255(lines 255 400) no Hoare annotation was computed. [2021-10-11 02:33:24,311 INFO L262 CegarLoopResult]: For program point L90(lines 90 400) no Hoare annotation was computed. [2021-10-11 02:33:24,311 INFO L262 CegarLoopResult]: For program point L355(lines 355 400) no Hoare annotation was computed. [2021-10-11 02:33:24,311 INFO L262 CegarLoopResult]: For program point L322(lines 322 400) no Hoare annotation was computed. [2021-10-11 02:33:24,311 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 02:33:24,311 INFO L262 CegarLoopResult]: For program point L124(lines 124 400) no Hoare annotation was computed. [2021-10-11 02:33:24,311 INFO L265 CegarLoopResult]: At program point L587(lines 587 604) the Hoare annotation is: true [2021-10-11 02:33:24,311 INFO L262 CegarLoopResult]: For program point L224(lines 224 400) no Hoare annotation was computed. [2021-10-11 02:33:24,312 INFO L262 CegarLoopResult]: For program point L158(lines 158 400) no Hoare annotation was computed. [2021-10-11 02:33:24,312 INFO L262 CegarLoopResult]: For program point L59(lines 59 400) no Hoare annotation was computed. [2021-10-11 02:33:24,312 INFO L262 CegarLoopResult]: For program point L94(lines 94 400) no Hoare annotation was computed. [2021-10-11 02:33:24,312 INFO L262 CegarLoopResult]: For program point L392(lines 392 400) no Hoare annotation was computed. [2021-10-11 02:33:24,312 INFO L262 CegarLoopResult]: For program point L326(lines 326 400) no Hoare annotation was computed. [2021-10-11 02:33:24,312 INFO L262 CegarLoopResult]: For program point L260(lines 260 400) no Hoare annotation was computed. [2021-10-11 02:33:24,312 INFO L262 CegarLoopResult]: For program point L228(lines 228 400) no Hoare annotation was computed. [2021-10-11 02:33:24,312 INFO L262 CegarLoopResult]: For program point L162(lines 162 400) no Hoare annotation was computed. [2021-10-11 02:33:24,313 INFO L262 CegarLoopResult]: For program point L129(lines 129 400) no Hoare annotation was computed. [2021-10-11 02:33:24,313 INFO L262 CegarLoopResult]: For program point L328(lines 328 400) no Hoare annotation was computed. [2021-10-11 02:33:24,313 INFO L262 CegarLoopResult]: For program point L196(lines 196 400) no Hoare annotation was computed. [2021-10-11 02:33:24,313 INFO L262 CegarLoopResult]: For program point L64(lines 64 400) no Hoare annotation was computed. [2021-10-11 02:33:24,313 INFO L258 CegarLoopResult]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse1 (= ~a17~0 0)) (.cse3 (= ~a21~0 1)) (.cse4 (= ~a17~0 1)) (.cse2 (not (= ~a20~0 1))) (.cse0 (<= ~a8~0 13))) (or (and .cse0 .cse1) (and .cse2 .cse1) (and .cse3 .cse0) (and (<= ~a8~0 14) .cse3 .cse4) (and .cse0 .cse4) (and .cse3 (<= 5 ~a16~0) .cse4) (and .cse3 .cse1) (and .cse3 .cse2 .cse4) (and .cse2 .cse0))) [2021-10-11 02:33:24,313 INFO L262 CegarLoopResult]: For program point L296(lines 296 400) no Hoare annotation was computed. [2021-10-11 02:33:24,314 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 453) no Hoare annotation was computed. [2021-10-11 02:33:24,314 INFO L262 CegarLoopResult]: For program point L363(lines 363 400) no Hoare annotation was computed. [2021-10-11 02:33:24,314 INFO L262 CegarLoopResult]: For program point L199(lines 199 400) no Hoare annotation was computed. [2021-10-11 02:33:24,314 INFO L262 CegarLoopResult]: For program point L365(lines 365 400) no Hoare annotation was computed. [2021-10-11 02:33:24,314 INFO L262 CegarLoopResult]: For program point L266(lines 266 400) no Hoare annotation was computed. [2021-10-11 02:33:24,314 INFO L262 CegarLoopResult]: For program point L233(lines 233 400) no Hoare annotation was computed. [2021-10-11 02:33:24,314 INFO L262 CegarLoopResult]: For program point L134(lines 134 400) no Hoare annotation was computed. [2021-10-11 02:33:24,333 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:33:24 BoogieIcfgContainer [2021-10-11 02:33:24,333 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:33:24,334 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:33:24,334 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:33:24,334 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:33:24,335 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:33:16" (3/4) ... [2021-10-11 02:33:24,338 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:33:24,357 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 102 nodes and edges [2021-10-11 02:33:24,359 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2021-10-11 02:33:24,360 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2021-10-11 02:33:24,362 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-10-11 02:33:24,498 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb420dc9-4325-4014-aca8-17892734acaa/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:33:24,499 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:33:24,500 INFO L168 Benchmark]: Toolchain (without parser) took 11289.31 ms. Allocated memory was 115.3 MB in the beginning and 302.0 MB in the end (delta: 186.6 MB). Free memory was 81.3 MB in the beginning and 156.9 MB in the end (delta: -75.7 MB). Peak memory consumption was 111.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:33:24,500 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 81.8 MB. Free memory was 37.4 MB in the beginning and 37.4 MB in the end (delta: 41.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:33:24,501 INFO L168 Benchmark]: CACSL2BoogieTranslator took 664.02 ms. Allocated memory is still 115.3 MB. Free memory was 81.3 MB in the beginning and 75.7 MB in the end (delta: 5.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:33:24,501 INFO L168 Benchmark]: Boogie Procedure Inliner took 83.43 ms. Allocated memory is still 115.3 MB. Free memory was 75.7 MB in the beginning and 70.0 MB in the end (delta: 5.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-11 02:33:24,501 INFO L168 Benchmark]: Boogie Preprocessor took 82.13 ms. Allocated memory is still 115.3 MB. Free memory was 70.0 MB in the beginning and 65.2 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:33:24,502 INFO L168 Benchmark]: RCFGBuilder took 2004.60 ms. Allocated memory was 115.3 MB in the beginning and 155.2 MB in the end (delta: 39.8 MB). Free memory was 65.2 MB in the beginning and 95.0 MB in the end (delta: -29.8 MB). Peak memory consumption was 52.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:33:24,502 INFO L168 Benchmark]: TraceAbstraction took 8282.31 ms. Allocated memory was 155.2 MB in the beginning and 302.0 MB in the end (delta: 146.8 MB). Free memory was 93.9 MB in the beginning and 171.6 MB in the end (delta: -77.7 MB). Peak memory consumption was 69.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:33:24,503 INFO L168 Benchmark]: Witness Printer took 164.79 ms. Allocated memory is still 302.0 MB. Free memory was 171.6 MB in the beginning and 156.9 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:33:24,505 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 81.8 MB. Free memory was 37.4 MB in the beginning and 37.4 MB in the end (delta: 41.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 664.02 ms. Allocated memory is still 115.3 MB. Free memory was 81.3 MB in the beginning and 75.7 MB in the end (delta: 5.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 83.43 ms. Allocated memory is still 115.3 MB. Free memory was 75.7 MB in the beginning and 70.0 MB in the end (delta: 5.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 82.13 ms. Allocated memory is still 115.3 MB. Free memory was 70.0 MB in the beginning and 65.2 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2004.60 ms. Allocated memory was 115.3 MB in the beginning and 155.2 MB in the end (delta: 39.8 MB). Free memory was 65.2 MB in the beginning and 95.0 MB in the end (delta: -29.8 MB). Peak memory consumption was 52.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 8282.31 ms. Allocated memory was 155.2 MB in the beginning and 302.0 MB in the end (delta: 146.8 MB). Free memory was 93.9 MB in the beginning and 171.6 MB in the end (delta: -77.7 MB). Peak memory consumption was 69.1 MB. Max. memory is 16.1 GB. * Witness Printer took 164.79 ms. Allocated memory is still 302.0 MB. Free memory was 171.6 MB in the beginning and 156.9 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 453]: 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: ((((((((a8 <= 13 && a17 == 0) || (!(a20 == 1) && a17 == 0)) || (a21 == 1 && a8 <= 13)) || ((a8 <= 14 && a21 == 1) && a17 == 1)) || (a8 <= 13 && a17 == 1)) || ((a21 == 1 && 5 <= a16) && a17 == 1)) || (a21 == 1 && a17 == 0)) || ((a21 == 1 && !(a20 == 1)) && a17 == 1)) || (!(a20 == 1) && a8 <= 13) - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: ((((((((a8 <= 13 && a17 == 0) || (!(a20 == 1) && a17 == 0)) || (a21 == 1 && a8 <= 13)) || ((a8 <= 14 && a21 == 1) && a17 == 1)) || (a8 <= 13 && a17 == 1)) || ((a21 == 1 && 5 <= a16) && a17 == 1)) || (a21 == 1 && a17 == 0)) || ((a21 == 1 && !(a20 == 1)) && a17 == 1)) || (!(a20 == 1) && a8 <= 13) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 7.7s, OverallIterations: 11, TraceHistogramMax: 5, AutomataDifference: 4.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 671 SDtfs, 563 SDslu, 43 SDs, 0 SdLazy, 2263 SolverSat, 519 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 371 GetRequests, 356 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=926occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 568 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 41 NumberOfFragments, 153 HoareAnnotationTreeSize, 3 FomulaSimplifications, 1364 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 170 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 1316 NumberOfCodeBlocks, 1316 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 1475 ConstructedInterpolants, 0 QuantifiedInterpolants, 423140 SizeOfPredicates, 0 NumberOfNonLiveVariables, 395 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 13 InterpolantComputations, 12 PerfectInterpolantSequences, 804/815 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...