./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.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_f1bc13c5-48ed-4731-9b10-cdde46310b40/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1bc13c5-48ed-4731-9b10-cdde46310b40/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_f1bc13c5-48ed-4731-9b10-cdde46310b40/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1bc13c5-48ed-4731-9b10-cdde46310b40/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1bc13c5-48ed-4731-9b10-cdde46310b40/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_f1bc13c5-48ed-4731-9b10-cdde46310b40/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 5b57e964dbb610d8a39ef60225ec1dbb75ce4568 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:25:59,041 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:25:59,044 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:25:59,100 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:25:59,100 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:25:59,102 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:25:59,104 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:25:59,108 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:25:59,111 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:25:59,112 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:25:59,114 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:25:59,116 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:25:59,117 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:25:59,123 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:25:59,125 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:25:59,127 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:25:59,131 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:25:59,141 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:25:59,144 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:25:59,149 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:25:59,161 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:25:59,163 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:25:59,165 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:25:59,166 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:25:59,171 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:25:59,173 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:25:59,174 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:25:59,175 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:25:59,177 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:25:59,179 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:25:59,180 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:25:59,181 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:25:59,187 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:25:59,188 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:25:59,190 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:25:59,190 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:25:59,191 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:25:59,192 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:25:59,192 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:25:59,193 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:25:59,194 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:25:59,195 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1bc13c5-48ed-4731-9b10-cdde46310b40/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:25:59,226 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:25:59,226 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:25:59,227 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:25:59,228 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:25:59,228 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:25:59,228 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:25:59,229 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:25:59,229 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:25:59,229 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:25:59,230 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:25:59,230 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:25:59,230 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:25:59,230 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:25:59,231 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:25:59,231 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:25:59,232 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:25:59,232 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:25:59,233 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:25:59,233 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:25:59,233 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:25:59,234 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:25:59,234 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:25:59,234 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:25:59,234 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:25:59,235 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:25:59,235 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:25:59,235 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:25:59,235 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:25:59,236 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:25:59,236 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:25:59,236 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:25:59,237 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:25:59,237 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:25:59,237 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:25:59,238 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:25:59,238 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:25:59,238 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:25:59,238 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:25:59,239 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:25:59,239 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_f1bc13c5-48ed-4731-9b10-cdde46310b40/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1bc13c5-48ed-4731-9b10-cdde46310b40/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5b57e964dbb610d8a39ef60225ec1dbb75ce4568 [2021-10-11 02:25:59,530 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:25:59,623 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:25:59,625 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:25:59,627 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:25:59,631 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:25:59,632 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1bc13c5-48ed-4731-9b10-cdde46310b40/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c [2021-10-11 02:25:59,746 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1bc13c5-48ed-4731-9b10-cdde46310b40/bin/utaipan-WLngWcDbfI/data/35d8197a5/63e78ee878644844988445c4fa974cc7/FLAGb5c0b702a [2021-10-11 02:26:00,326 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:26:00,326 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1bc13c5-48ed-4731-9b10-cdde46310b40/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c [2021-10-11 02:26:00,335 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1bc13c5-48ed-4731-9b10-cdde46310b40/bin/utaipan-WLngWcDbfI/data/35d8197a5/63e78ee878644844988445c4fa974cc7/FLAGb5c0b702a [2021-10-11 02:26:00,626 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1bc13c5-48ed-4731-9b10-cdde46310b40/bin/utaipan-WLngWcDbfI/data/35d8197a5/63e78ee878644844988445c4fa974cc7 [2021-10-11 02:26:00,632 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:26:00,634 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:26:00,636 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:26:00,636 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:26:00,641 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:26:00,642 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:26:00" (1/1) ... [2021-10-11 02:26:00,644 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c08eaad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:00, skipping insertion in model container [2021-10-11 02:26:00,645 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:26:00" (1/1) ... [2021-10-11 02:26:00,654 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:26:00,702 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:26:00,891 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_f1bc13c5-48ed-4731-9b10-cdde46310b40/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[1224,1237] [2021-10-11 02:26:00,899 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_f1bc13c5-48ed-4731-9b10-cdde46310b40/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[1636,1649] [2021-10-11 02:26:00,901 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_f1bc13c5-48ed-4731-9b10-cdde46310b40/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[1851,1864] [2021-10-11 02:26:00,906 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_f1bc13c5-48ed-4731-9b10-cdde46310b40/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[2384,2397] [2021-10-11 02:26:00,909 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_f1bc13c5-48ed-4731-9b10-cdde46310b40/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[2599,2612] [2021-10-11 02:26:00,913 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_f1bc13c5-48ed-4731-9b10-cdde46310b40/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[2901,2914] [2021-10-11 02:26:00,915 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_f1bc13c5-48ed-4731-9b10-cdde46310b40/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[3116,3129] [2021-10-11 02:26:00,918 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_f1bc13c5-48ed-4731-9b10-cdde46310b40/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[3386,3399] [2021-10-11 02:26:00,921 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_f1bc13c5-48ed-4731-9b10-cdde46310b40/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[3604,3617] [2021-10-11 02:26:00,937 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_f1bc13c5-48ed-4731-9b10-cdde46310b40/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[4088,4101] [2021-10-11 02:26:00,939 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_f1bc13c5-48ed-4731-9b10-cdde46310b40/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[4306,4319] [2021-10-11 02:26:00,942 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_f1bc13c5-48ed-4731-9b10-cdde46310b40/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[4802,4815] [2021-10-11 02:26:00,946 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_f1bc13c5-48ed-4731-9b10-cdde46310b40/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[5203,5216] [2021-10-11 02:26:00,948 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_f1bc13c5-48ed-4731-9b10-cdde46310b40/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[5421,5434] [2021-10-11 02:26:00,950 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_f1bc13c5-48ed-4731-9b10-cdde46310b40/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[5792,5805] [2021-10-11 02:26:00,952 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_f1bc13c5-48ed-4731-9b10-cdde46310b40/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[6010,6023] [2021-10-11 02:26:00,954 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_f1bc13c5-48ed-4731-9b10-cdde46310b40/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[6296,6309] [2021-10-11 02:26:00,956 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_f1bc13c5-48ed-4731-9b10-cdde46310b40/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[6514,6527] [2021-10-11 02:26:00,959 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:26:00,971 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:26:00,991 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_f1bc13c5-48ed-4731-9b10-cdde46310b40/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[1224,1237] [2021-10-11 02:26:00,994 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_f1bc13c5-48ed-4731-9b10-cdde46310b40/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[1636,1649] [2021-10-11 02:26:00,995 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_f1bc13c5-48ed-4731-9b10-cdde46310b40/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[1851,1864] [2021-10-11 02:26:00,999 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_f1bc13c5-48ed-4731-9b10-cdde46310b40/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[2384,2397] [2021-10-11 02:26:01,001 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_f1bc13c5-48ed-4731-9b10-cdde46310b40/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[2599,2612] [2021-10-11 02:26:01,004 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_f1bc13c5-48ed-4731-9b10-cdde46310b40/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[2901,2914] [2021-10-11 02:26:01,006 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_f1bc13c5-48ed-4731-9b10-cdde46310b40/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[3116,3129] [2021-10-11 02:26:01,008 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_f1bc13c5-48ed-4731-9b10-cdde46310b40/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[3386,3399] [2021-10-11 02:26:01,010 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_f1bc13c5-48ed-4731-9b10-cdde46310b40/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[3604,3617] [2021-10-11 02:26:01,013 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_f1bc13c5-48ed-4731-9b10-cdde46310b40/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[4088,4101] [2021-10-11 02:26:01,015 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_f1bc13c5-48ed-4731-9b10-cdde46310b40/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[4306,4319] [2021-10-11 02:26:01,019 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_f1bc13c5-48ed-4731-9b10-cdde46310b40/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[4802,4815] [2021-10-11 02:26:01,022 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1bc13c5-48ed-4731-9b10-cdde46310b40/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[5203,5216] [2021-10-11 02:26:01,024 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_f1bc13c5-48ed-4731-9b10-cdde46310b40/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[5421,5434] [2021-10-11 02:26:01,026 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_f1bc13c5-48ed-4731-9b10-cdde46310b40/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[5792,5805] [2021-10-11 02:26:01,028 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_f1bc13c5-48ed-4731-9b10-cdde46310b40/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[6010,6023] [2021-10-11 02:26:01,030 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_f1bc13c5-48ed-4731-9b10-cdde46310b40/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[6296,6309] [2021-10-11 02:26:01,032 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_f1bc13c5-48ed-4731-9b10-cdde46310b40/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[6514,6527] [2021-10-11 02:26:01,035 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:26:01,053 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:26:01,053 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:01 WrapperNode [2021-10-11 02:26:01,054 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:26:01,055 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:26:01,056 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:26:01,056 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:26:01,067 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:01" (1/1) ... [2021-10-11 02:26:01,078 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:01" (1/1) ... [2021-10-11 02:26:01,116 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:26:01,117 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:26:01,117 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:26:01,118 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:26:01,129 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:01" (1/1) ... [2021-10-11 02:26:01,129 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:01" (1/1) ... [2021-10-11 02:26:01,133 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:01" (1/1) ... [2021-10-11 02:26:01,133 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:01" (1/1) ... [2021-10-11 02:26:01,143 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:01" (1/1) ... [2021-10-11 02:26:01,148 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:01" (1/1) ... [2021-10-11 02:26:01,151 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:01" (1/1) ... [2021-10-11 02:26:01,155 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:26:01,156 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:26:01,157 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:26:01,157 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:26:01,158 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:01" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1bc13c5-48ed-4731-9b10-cdde46310b40/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:26:01,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:26:01,297 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:26:01,297 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:26:01,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:26:01,976 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:26:01,976 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-11 02:26:01,979 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:26:01 BoogieIcfgContainer [2021-10-11 02:26:01,980 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:26:01,982 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:26:01,982 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:26:01,989 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:26:02,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:26:00" (1/3) ... [2021-10-11 02:26:02,003 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41f4182b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:26:02, skipping insertion in model container [2021-10-11 02:26:02,003 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:01" (2/3) ... [2021-10-11 02:26:02,003 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41f4182b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:26:02, skipping insertion in model container [2021-10-11 02:26:02,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:26:01" (3/3) ... [2021-10-11 02:26:02,006 INFO L111 eAbstractionObserver]: Analyzing ICFG apache-get-tag.i.v+lhb-reducer.c [2021-10-11 02:26:02,030 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:26:02,034 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 18 error locations. [2021-10-11 02:26:02,050 INFO L253 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2021-10-11 02:26:02,101 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:26:02,102 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:26:02,102 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:26:02,102 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:26:02,102 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:26:02,102 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:26:02,102 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:26:02,102 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:26:02,124 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states. [2021-10-11 02:26:02,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-11 02:26:02,131 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:02,132 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:26:02,133 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:26:02,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:02,140 INFO L82 PathProgramCache]: Analyzing trace with hash -101219053, now seen corresponding path program 1 times [2021-10-11 02:26:02,151 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:02,152 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902704777] [2021-10-11 02:26:02,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:02,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:02,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:26:02,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902704777] [2021-10-11 02:26:02,433 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:26:02,433 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:26:02,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472148481] [2021-10-11 02:26:02,439 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:26:02,440 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:02,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:26:02,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:26:02,493 INFO L87 Difference]: Start difference. First operand 73 states. Second operand 4 states. [2021-10-11 02:26:02,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:02,698 INFO L93 Difference]: Finished difference Result 118 states and 159 transitions. [2021-10-11 02:26:02,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:26:02,700 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2021-10-11 02:26:02,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:02,717 INFO L225 Difference]: With dead ends: 118 [2021-10-11 02:26:02,725 INFO L226 Difference]: Without dead ends: 106 [2021-10-11 02:26:02,728 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:26:02,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-10-11 02:26:02,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 68. [2021-10-11 02:26:02,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2021-10-11 02:26:02,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 72 transitions. [2021-10-11 02:26:02,807 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 72 transitions. Word has length 7 [2021-10-11 02:26:02,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:02,808 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 72 transitions. [2021-10-11 02:26:02,808 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:26:02,809 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 72 transitions. [2021-10-11 02:26:02,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-11 02:26:02,810 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:02,810 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:26:02,810 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:26:02,811 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:26:02,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:02,815 INFO L82 PathProgramCache]: Analyzing trace with hash -104789997, now seen corresponding path program 1 times [2021-10-11 02:26:02,815 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:02,816 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698453579] [2021-10-11 02:26:02,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:02,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:02,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:26:02,938 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698453579] [2021-10-11 02:26:02,939 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:26:02,941 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:26:02,942 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927435289] [2021-10-11 02:26:02,943 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:26:02,946 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:02,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:26:02,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:26:02,950 INFO L87 Difference]: Start difference. First operand 68 states and 72 transitions. Second operand 4 states. [2021-10-11 02:26:03,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:03,105 INFO L93 Difference]: Finished difference Result 106 states and 112 transitions. [2021-10-11 02:26:03,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:26:03,107 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2021-10-11 02:26:03,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:03,111 INFO L225 Difference]: With dead ends: 106 [2021-10-11 02:26:03,113 INFO L226 Difference]: Without dead ends: 104 [2021-10-11 02:26:03,114 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:26:03,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2021-10-11 02:26:03,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 66. [2021-10-11 02:26:03,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2021-10-11 02:26:03,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 70 transitions. [2021-10-11 02:26:03,136 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 70 transitions. Word has length 7 [2021-10-11 02:26:03,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:03,137 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 70 transitions. [2021-10-11 02:26:03,137 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:26:03,137 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 70 transitions. [2021-10-11 02:26:03,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-11 02:26:03,138 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:03,139 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:26:03,139 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:26:03,139 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:26:03,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:03,140 INFO L82 PathProgramCache]: Analyzing trace with hash -345778017, now seen corresponding path program 1 times [2021-10-11 02:26:03,140 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:03,141 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451610603] [2021-10-11 02:26:03,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:03,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:03,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:26:03,241 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451610603] [2021-10-11 02:26:03,242 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:26:03,242 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-11 02:26:03,242 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729810497] [2021-10-11 02:26:03,242 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:26:03,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:03,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:26:03,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:26:03,244 INFO L87 Difference]: Start difference. First operand 66 states and 70 transitions. Second operand 5 states. [2021-10-11 02:26:03,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:03,384 INFO L93 Difference]: Finished difference Result 68 states and 72 transitions. [2021-10-11 02:26:03,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:26:03,385 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2021-10-11 02:26:03,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:03,386 INFO L225 Difference]: With dead ends: 68 [2021-10-11 02:26:03,386 INFO L226 Difference]: Without dead ends: 66 [2021-10-11 02:26:03,387 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:26:03,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-10-11 02:26:03,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 64. [2021-10-11 02:26:03,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2021-10-11 02:26:03,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 68 transitions. [2021-10-11 02:26:03,395 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 68 transitions. Word has length 10 [2021-10-11 02:26:03,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:03,395 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 68 transitions. [2021-10-11 02:26:03,396 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:26:03,396 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 68 transitions. [2021-10-11 02:26:03,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-11 02:26:03,397 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:03,397 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:26:03,397 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 02:26:03,397 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:26:03,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:03,398 INFO L82 PathProgramCache]: Analyzing trace with hash 646297484, now seen corresponding path program 1 times [2021-10-11 02:26:03,399 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:03,399 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787398879] [2021-10-11 02:26:03,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:03,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:03,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:26:03,487 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787398879] [2021-10-11 02:26:03,488 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:26:03,488 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-11 02:26:03,488 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588818580] [2021-10-11 02:26:03,489 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:26:03,489 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:03,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:26:03,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:26:03,491 INFO L87 Difference]: Start difference. First operand 64 states and 68 transitions. Second operand 5 states. [2021-10-11 02:26:03,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:03,637 INFO L93 Difference]: Finished difference Result 66 states and 70 transitions. [2021-10-11 02:26:03,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:26:03,637 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2021-10-11 02:26:03,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:03,638 INFO L225 Difference]: With dead ends: 66 [2021-10-11 02:26:03,638 INFO L226 Difference]: Without dead ends: 64 [2021-10-11 02:26:03,639 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:26:03,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-10-11 02:26:03,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 62. [2021-10-11 02:26:03,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2021-10-11 02:26:03,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 66 transitions. [2021-10-11 02:26:03,659 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 66 transitions. Word has length 10 [2021-10-11 02:26:03,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:03,660 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 66 transitions. [2021-10-11 02:26:03,660 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:26:03,660 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 66 transitions. [2021-10-11 02:26:03,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-11 02:26:03,661 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:03,661 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:26:03,661 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 02:26:03,661 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:26:03,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:03,662 INFO L82 PathProgramCache]: Analyzing trace with hash -2129179748, now seen corresponding path program 1 times [2021-10-11 02:26:03,662 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:03,663 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144590427] [2021-10-11 02:26:03,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:03,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:03,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:26:03,760 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144590427] [2021-10-11 02:26:03,761 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:26:03,761 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:26:03,761 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222748572] [2021-10-11 02:26:03,761 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:26:03,762 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:03,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:26:03,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:26:03,763 INFO L87 Difference]: Start difference. First operand 62 states and 66 transitions. Second operand 4 states. [2021-10-11 02:26:03,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:03,863 INFO L93 Difference]: Finished difference Result 64 states and 68 transitions. [2021-10-11 02:26:03,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:26:03,864 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2021-10-11 02:26:03,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:03,868 INFO L225 Difference]: With dead ends: 64 [2021-10-11 02:26:03,871 INFO L226 Difference]: Without dead ends: 60 [2021-10-11 02:26:03,872 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:26:03,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-10-11 02:26:03,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 58. [2021-10-11 02:26:03,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2021-10-11 02:26:03,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 62 transitions. [2021-10-11 02:26:03,894 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 62 transitions. Word has length 11 [2021-10-11 02:26:03,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:03,895 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 62 transitions. [2021-10-11 02:26:03,895 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:26:03,895 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 62 transitions. [2021-10-11 02:26:03,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-11 02:26:03,896 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:03,896 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:26:03,896 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-11 02:26:03,896 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:26:03,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:03,897 INFO L82 PathProgramCache]: Analyzing trace with hash -2128691176, now seen corresponding path program 1 times [2021-10-11 02:26:03,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:03,898 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325141654] [2021-10-11 02:26:03,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:03,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:04,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:26:04,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325141654] [2021-10-11 02:26:04,003 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:26:04,003 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-11 02:26:04,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636096212] [2021-10-11 02:26:04,004 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:26:04,005 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:04,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:26:04,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:26:04,007 INFO L87 Difference]: Start difference. First operand 58 states and 62 transitions. Second operand 5 states. [2021-10-11 02:26:04,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:04,175 INFO L93 Difference]: Finished difference Result 94 states and 100 transitions. [2021-10-11 02:26:04,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:26:04,176 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2021-10-11 02:26:04,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:04,178 INFO L225 Difference]: With dead ends: 94 [2021-10-11 02:26:04,178 INFO L226 Difference]: Without dead ends: 92 [2021-10-11 02:26:04,180 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:26:04,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-10-11 02:26:04,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 56. [2021-10-11 02:26:04,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2021-10-11 02:26:04,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 60 transitions. [2021-10-11 02:26:04,188 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 60 transitions. Word has length 11 [2021-10-11 02:26:04,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:04,189 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 60 transitions. [2021-10-11 02:26:04,189 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:26:04,189 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 60 transitions. [2021-10-11 02:26:04,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-11 02:26:04,190 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:04,191 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:26:04,191 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-11 02:26:04,191 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:26:04,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:04,201 INFO L82 PathProgramCache]: Analyzing trace with hash -2128675288, now seen corresponding path program 1 times [2021-10-11 02:26:04,204 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:04,206 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850082308] [2021-10-11 02:26:04,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:04,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:04,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:26:04,297 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850082308] [2021-10-11 02:26:04,297 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:26:04,298 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-11 02:26:04,298 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270425345] [2021-10-11 02:26:04,298 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:26:04,298 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:04,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:26:04,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:26:04,301 INFO L87 Difference]: Start difference. First operand 56 states and 60 transitions. Second operand 5 states. [2021-10-11 02:26:04,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:04,489 INFO L93 Difference]: Finished difference Result 99 states and 106 transitions. [2021-10-11 02:26:04,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:26:04,490 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2021-10-11 02:26:04,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:04,492 INFO L225 Difference]: With dead ends: 99 [2021-10-11 02:26:04,492 INFO L226 Difference]: Without dead ends: 97 [2021-10-11 02:26:04,493 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:26:04,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2021-10-11 02:26:04,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 54. [2021-10-11 02:26:04,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2021-10-11 02:26:04,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2021-10-11 02:26:04,531 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 11 [2021-10-11 02:26:04,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:04,532 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2021-10-11 02:26:04,532 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:26:04,532 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2021-10-11 02:26:04,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-11 02:26:04,533 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:04,533 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:26:04,534 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-11 02:26:04,534 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:26:04,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:04,538 INFO L82 PathProgramCache]: Analyzing trace with hash -1439610404, now seen corresponding path program 1 times [2021-10-11 02:26:04,538 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:04,538 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575278190] [2021-10-11 02:26:04,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:04,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:04,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:26:04,597 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575278190] [2021-10-11 02:26:04,597 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:26:04,598 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:26:04,598 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862964911] [2021-10-11 02:26:04,599 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:26:04,599 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:04,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:26:04,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:26:04,600 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. Second operand 4 states. [2021-10-11 02:26:04,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:04,677 INFO L93 Difference]: Finished difference Result 56 states and 60 transitions. [2021-10-11 02:26:04,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:26:04,678 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2021-10-11 02:26:04,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:04,679 INFO L225 Difference]: With dead ends: 56 [2021-10-11 02:26:04,679 INFO L226 Difference]: Without dead ends: 52 [2021-10-11 02:26:04,680 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:26:04,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-10-11 02:26:04,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2021-10-11 02:26:04,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2021-10-11 02:26:04,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2021-10-11 02:26:04,688 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 11 [2021-10-11 02:26:04,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:04,689 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2021-10-11 02:26:04,689 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:26:04,690 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2021-10-11 02:26:04,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-11 02:26:04,692 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:04,698 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:26:04,698 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-11 02:26:04,699 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:26:04,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:04,701 INFO L82 PathProgramCache]: Analyzing trace with hash -1564912810, now seen corresponding path program 1 times [2021-10-11 02:26:04,702 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:04,702 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801165036] [2021-10-11 02:26:04,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:04,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:04,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:26:04,840 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801165036] [2021-10-11 02:26:04,841 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:26:04,841 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-11 02:26:04,841 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306492234] [2021-10-11 02:26:04,842 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 02:26:04,842 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:04,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 02:26:04,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:26:04,843 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand 6 states. [2021-10-11 02:26:05,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:05,013 INFO L93 Difference]: Finished difference Result 117 states and 126 transitions. [2021-10-11 02:26:05,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-11 02:26:05,013 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2021-10-11 02:26:05,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:05,014 INFO L225 Difference]: With dead ends: 117 [2021-10-11 02:26:05,015 INFO L226 Difference]: Without dead ends: 115 [2021-10-11 02:26:05,015 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:26:05,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-10-11 02:26:05,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 55. [2021-10-11 02:26:05,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2021-10-11 02:26:05,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 60 transitions. [2021-10-11 02:26:05,021 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 60 transitions. Word has length 12 [2021-10-11 02:26:05,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:05,021 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 60 transitions. [2021-10-11 02:26:05,021 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 02:26:05,021 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 60 transitions. [2021-10-11 02:26:05,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-11 02:26:05,022 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:05,022 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:26:05,022 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-11 02:26:05,022 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:26:05,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:05,023 INFO L82 PathProgramCache]: Analyzing trace with hash -1564420266, now seen corresponding path program 1 times [2021-10-11 02:26:05,023 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:05,023 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742148620] [2021-10-11 02:26:05,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:05,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:05,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:26:05,158 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742148620] [2021-10-11 02:26:05,158 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:26:05,158 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-11 02:26:05,159 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101515225] [2021-10-11 02:26:05,159 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 02:26:05,159 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:05,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 02:26:05,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:26:05,160 INFO L87 Difference]: Start difference. First operand 55 states and 60 transitions. Second operand 6 states. [2021-10-11 02:26:05,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:05,349 INFO L93 Difference]: Finished difference Result 115 states and 124 transitions. [2021-10-11 02:26:05,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-11 02:26:05,350 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2021-10-11 02:26:05,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:05,351 INFO L225 Difference]: With dead ends: 115 [2021-10-11 02:26:05,351 INFO L226 Difference]: Without dead ends: 113 [2021-10-11 02:26:05,352 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:26:05,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-10-11 02:26:05,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 57. [2021-10-11 02:26:05,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2021-10-11 02:26:05,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 62 transitions. [2021-10-11 02:26:05,357 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 62 transitions. Word has length 12 [2021-10-11 02:26:05,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:05,357 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 62 transitions. [2021-10-11 02:26:05,357 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 02:26:05,358 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 62 transitions. [2021-10-11 02:26:05,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-11 02:26:05,358 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:05,358 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:26:05,359 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-11 02:26:05,359 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:26:05,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:05,360 INFO L82 PathProgramCache]: Analyzing trace with hash -1661195103, now seen corresponding path program 1 times [2021-10-11 02:26:05,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:05,360 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696374346] [2021-10-11 02:26:05,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:05,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:05,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:26:05,402 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696374346] [2021-10-11 02:26:05,402 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:26:05,402 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-11 02:26:05,403 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534158687] [2021-10-11 02:26:05,403 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:26:05,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:05,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:26:05,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:26:05,405 INFO L87 Difference]: Start difference. First operand 57 states and 62 transitions. Second operand 5 states. [2021-10-11 02:26:05,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:05,521 INFO L93 Difference]: Finished difference Result 75 states and 82 transitions. [2021-10-11 02:26:05,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:26:05,521 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2021-10-11 02:26:05,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:05,522 INFO L225 Difference]: With dead ends: 75 [2021-10-11 02:26:05,522 INFO L226 Difference]: Without dead ends: 73 [2021-10-11 02:26:05,523 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:26:05,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-10-11 02:26:05,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 55. [2021-10-11 02:26:05,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2021-10-11 02:26:05,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 60 transitions. [2021-10-11 02:26:05,528 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 60 transitions. Word has length 12 [2021-10-11 02:26:05,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:05,528 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 60 transitions. [2021-10-11 02:26:05,529 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:26:05,529 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 60 transitions. [2021-10-11 02:26:05,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-11 02:26:05,530 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:05,530 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:26:05,530 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-11 02:26:05,530 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:26:05,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:05,531 INFO L82 PathProgramCache]: Analyzing trace with hash -1659471199, now seen corresponding path program 1 times [2021-10-11 02:26:05,531 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:05,532 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977584561] [2021-10-11 02:26:05,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:05,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:05,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:26:05,571 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977584561] [2021-10-11 02:26:05,571 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:26:05,571 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-11 02:26:05,572 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881070679] [2021-10-11 02:26:05,572 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:26:05,572 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:05,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:26:05,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:26:05,573 INFO L87 Difference]: Start difference. First operand 55 states and 60 transitions. Second operand 5 states. [2021-10-11 02:26:05,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:05,683 INFO L93 Difference]: Finished difference Result 56 states and 61 transitions. [2021-10-11 02:26:05,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:26:05,684 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2021-10-11 02:26:05,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:05,684 INFO L225 Difference]: With dead ends: 56 [2021-10-11 02:26:05,685 INFO L226 Difference]: Without dead ends: 54 [2021-10-11 02:26:05,685 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:26:05,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-10-11 02:26:05,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2021-10-11 02:26:05,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2021-10-11 02:26:05,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 58 transitions. [2021-10-11 02:26:05,693 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 58 transitions. Word has length 12 [2021-10-11 02:26:05,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:05,694 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 58 transitions. [2021-10-11 02:26:05,694 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:26:05,694 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 58 transitions. [2021-10-11 02:26:05,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-11 02:26:05,695 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:05,695 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:26:05,695 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-11 02:26:05,696 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:26:05,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:05,696 INFO L82 PathProgramCache]: Analyzing trace with hash 42563455, now seen corresponding path program 1 times [2021-10-11 02:26:05,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:05,697 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589168095] [2021-10-11 02:26:05,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:05,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:05,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:26:05,879 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589168095] [2021-10-11 02:26:05,879 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:26:05,879 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-11 02:26:05,879 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076182258] [2021-10-11 02:26:05,880 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 02:26:05,881 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:05,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 02:26:05,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:26:05,882 INFO L87 Difference]: Start difference. First operand 53 states and 58 transitions. Second operand 6 states. [2021-10-11 02:26:06,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:06,039 INFO L93 Difference]: Finished difference Result 91 states and 100 transitions. [2021-10-11 02:26:06,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-11 02:26:06,040 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2021-10-11 02:26:06,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:06,054 INFO L225 Difference]: With dead ends: 91 [2021-10-11 02:26:06,054 INFO L226 Difference]: Without dead ends: 89 [2021-10-11 02:26:06,055 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:26:06,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-10-11 02:26:06,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 59. [2021-10-11 02:26:06,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2021-10-11 02:26:06,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 66 transitions. [2021-10-11 02:26:06,062 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 66 transitions. Word has length 13 [2021-10-11 02:26:06,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:06,062 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 66 transitions. [2021-10-11 02:26:06,062 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 02:26:06,063 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 66 transitions. [2021-10-11 02:26:06,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-11 02:26:06,063 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:06,063 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:26:06,064 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-11 02:26:06,064 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:26:06,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:06,064 INFO L82 PathProgramCache]: Analyzing trace with hash 44110600, now seen corresponding path program 1 times [2021-10-11 02:26:06,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:06,065 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206674343] [2021-10-11 02:26:06,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:06,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:06,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:26:06,103 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206674343] [2021-10-11 02:26:06,103 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:26:06,103 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-11 02:26:06,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374204746] [2021-10-11 02:26:06,104 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:26:06,104 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:06,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:26:06,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:26:06,105 INFO L87 Difference]: Start difference. First operand 59 states and 66 transitions. Second operand 5 states. [2021-10-11 02:26:06,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:06,229 INFO L93 Difference]: Finished difference Result 79 states and 88 transitions. [2021-10-11 02:26:06,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:26:06,230 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2021-10-11 02:26:06,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:06,231 INFO L225 Difference]: With dead ends: 79 [2021-10-11 02:26:06,231 INFO L226 Difference]: Without dead ends: 77 [2021-10-11 02:26:06,232 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:26:06,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-10-11 02:26:06,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 57. [2021-10-11 02:26:06,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2021-10-11 02:26:06,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 64 transitions. [2021-10-11 02:26:06,238 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 64 transitions. Word has length 13 [2021-10-11 02:26:06,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:06,238 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 64 transitions. [2021-10-11 02:26:06,238 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:26:06,238 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 64 transitions. [2021-10-11 02:26:06,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-11 02:26:06,239 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:06,239 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:26:06,239 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-10-11 02:26:06,240 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:26:06,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:06,240 INFO L82 PathProgramCache]: Analyzing trace with hash 96004535, now seen corresponding path program 1 times [2021-10-11 02:26:06,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:06,241 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594605020] [2021-10-11 02:26:06,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:06,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:06,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:26:06,370 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594605020] [2021-10-11 02:26:06,370 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:26:06,370 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-11 02:26:06,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240477826] [2021-10-11 02:26:06,371 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 02:26:06,371 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:06,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 02:26:06,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:26:06,372 INFO L87 Difference]: Start difference. First operand 57 states and 64 transitions. Second operand 6 states. [2021-10-11 02:26:06,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:06,496 INFO L93 Difference]: Finished difference Result 69 states and 76 transitions. [2021-10-11 02:26:06,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 02:26:06,497 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2021-10-11 02:26:06,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:06,498 INFO L225 Difference]: With dead ends: 69 [2021-10-11 02:26:06,498 INFO L226 Difference]: Without dead ends: 65 [2021-10-11 02:26:06,499 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:26:06,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-10-11 02:26:06,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 58. [2021-10-11 02:26:06,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2021-10-11 02:26:06,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 65 transitions. [2021-10-11 02:26:06,504 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 65 transitions. Word has length 13 [2021-10-11 02:26:06,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:06,505 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 65 transitions. [2021-10-11 02:26:06,505 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 02:26:06,505 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 65 transitions. [2021-10-11 02:26:06,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-11 02:26:06,505 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:06,506 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:26:06,506 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-10-11 02:26:06,506 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:26:06,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:06,507 INFO L82 PathProgramCache]: Analyzing trace with hash 1367432731, now seen corresponding path program 1 times [2021-10-11 02:26:06,507 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:06,507 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481028804] [2021-10-11 02:26:06,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:06,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:06,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:26:06,658 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481028804] [2021-10-11 02:26:06,658 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:26:06,658 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-11 02:26:06,658 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775952537] [2021-10-11 02:26:06,659 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 02:26:06,659 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:06,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 02:26:06,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:26:06,660 INFO L87 Difference]: Start difference. First operand 58 states and 65 transitions. Second operand 6 states. [2021-10-11 02:26:06,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:06,837 INFO L93 Difference]: Finished difference Result 86 states and 95 transitions. [2021-10-11 02:26:06,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-11 02:26:06,838 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2021-10-11 02:26:06,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:06,838 INFO L225 Difference]: With dead ends: 86 [2021-10-11 02:26:06,839 INFO L226 Difference]: Without dead ends: 84 [2021-10-11 02:26:06,839 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:26:06,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-10-11 02:26:06,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 61. [2021-10-11 02:26:06,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2021-10-11 02:26:06,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 68 transitions. [2021-10-11 02:26:06,845 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 68 transitions. Word has length 14 [2021-10-11 02:26:06,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:06,846 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 68 transitions. [2021-10-11 02:26:06,846 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 02:26:06,846 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 68 transitions. [2021-10-11 02:26:06,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-11 02:26:06,846 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:06,847 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:26:06,847 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-10-11 02:26:06,847 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:26:06,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:06,848 INFO L82 PathProgramCache]: Analyzing trace with hash -2046065374, now seen corresponding path program 1 times [2021-10-11 02:26:06,848 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:06,848 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335134460] [2021-10-11 02:26:06,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:06,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:06,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:26:06,911 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335134460] [2021-10-11 02:26:06,911 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:26:06,911 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:26:06,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672549424] [2021-10-11 02:26:06,912 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:26:06,912 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:06,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:26:06,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:26:06,914 INFO L87 Difference]: Start difference. First operand 61 states and 68 transitions. Second operand 4 states. [2021-10-11 02:26:06,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:06,962 INFO L93 Difference]: Finished difference Result 61 states and 68 transitions. [2021-10-11 02:26:06,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:26:06,963 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2021-10-11 02:26:06,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:06,964 INFO L225 Difference]: With dead ends: 61 [2021-10-11 02:26:06,964 INFO L226 Difference]: Without dead ends: 59 [2021-10-11 02:26:06,964 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:26:06,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-10-11 02:26:06,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2021-10-11 02:26:06,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2021-10-11 02:26:06,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 66 transitions. [2021-10-11 02:26:06,970 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 66 transitions. Word has length 15 [2021-10-11 02:26:06,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:06,970 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 66 transitions. [2021-10-11 02:26:06,970 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:26:06,971 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 66 transitions. [2021-10-11 02:26:06,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-11 02:26:06,971 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:06,971 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:26:06,972 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-10-11 02:26:06,972 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:26:06,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:06,972 INFO L82 PathProgramCache]: Analyzing trace with hash 996486959, now seen corresponding path program 1 times [2021-10-11 02:26:06,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:06,973 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502706409] [2021-10-11 02:26:06,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:06,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:07,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:26:07,006 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502706409] [2021-10-11 02:26:07,006 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:26:07,006 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:26:07,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086754087] [2021-10-11 02:26:07,007 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:26:07,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:07,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:26:07,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:26:07,008 INFO L87 Difference]: Start difference. First operand 59 states and 66 transitions. Second operand 4 states. [2021-10-11 02:26:07,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:07,099 INFO L93 Difference]: Finished difference Result 59 states and 66 transitions. [2021-10-11 02:26:07,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:26:07,100 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2021-10-11 02:26:07,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:07,101 INFO L225 Difference]: With dead ends: 59 [2021-10-11 02:26:07,101 INFO L226 Difference]: Without dead ends: 55 [2021-10-11 02:26:07,102 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:26:07,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-10-11 02:26:07,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2021-10-11 02:26:07,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2021-10-11 02:26:07,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 62 transitions. [2021-10-11 02:26:07,107 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 62 transitions. Word has length 16 [2021-10-11 02:26:07,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:07,107 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 62 transitions. [2021-10-11 02:26:07,108 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:26:07,108 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 62 transitions. [2021-10-11 02:26:07,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-11 02:26:07,108 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:07,108 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:26:07,109 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-10-11 02:26:07,109 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:26:07,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:07,109 INFO L82 PathProgramCache]: Analyzing trace with hash 321012073, now seen corresponding path program 1 times [2021-10-11 02:26:07,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:07,110 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125068352] [2021-10-11 02:26:07,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:07,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:07,176 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:26:07,176 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125068352] [2021-10-11 02:26:07,176 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [989675724] [2021-10-11 02:26:07,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1bc13c5-48ed-4731-9b10-cdde46310b40/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:26:07,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:07,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-11 02:26:07,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:26:07,438 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:26:07,438 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:26:07,538 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2021-10-11 02:26:07,538 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2021-10-11 02:26:07,565 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:26:07,565 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1642045125] [2021-10-11 02:26:07,585 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-10-11 02:26:07,585 INFO L166 IcfgInterpreter]: Building call graph [2021-10-11 02:26:07,589 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-11 02:26:07,595 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-11 02:26:07,595 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-11 02:26:08,224 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-11 02:26:08,552 WARN L197 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 72 [2021-10-11 02:26:08,760 WARN L197 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2021-10-11 02:26:08,990 WARN L197 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2021-10-11 02:26:09,277 WARN L197 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 70 [2021-10-11 02:26:09,598 WARN L197 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 72 [2021-10-11 02:26:09,944 WARN L197 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 78 [2021-10-11 02:26:10,819 WARN L197 SmtUtils]: Spent 802.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 77 [2021-10-11 02:26:11,089 WARN L197 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 52 [2021-10-11 02:26:11,247 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2021-10-11 02:26:11,496 WARN L197 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 62 [2021-10-11 02:26:11,740 WARN L197 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 68 [2021-10-11 02:26:11,891 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2021-10-11 02:26:12,175 WARN L197 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2021-10-11 02:26:12,178 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:26:12,178 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-11 02:26:12,178 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 7] total 12 [2021-10-11 02:26:12,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532267468] [2021-10-11 02:26:12,179 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-10-11 02:26:12,179 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:12,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-11 02:26:12,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=470, Unknown=0, NotChecked=0, Total=600 [2021-10-11 02:26:12,180 INFO L87 Difference]: Start difference. First operand 55 states and 62 transitions. Second operand 12 states. [2021-10-11 02:26:12,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:12,496 INFO L93 Difference]: Finished difference Result 73 states and 82 transitions. [2021-10-11 02:26:12,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-11 02:26:12,496 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 17 [2021-10-11 02:26:12,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:12,497 INFO L225 Difference]: With dead ends: 73 [2021-10-11 02:26:12,497 INFO L226 Difference]: Without dead ends: 69 [2021-10-11 02:26:12,498 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 32 SyntacticMatches, 4 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=211, Invalid=781, Unknown=0, NotChecked=0, Total=992 [2021-10-11 02:26:12,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-10-11 02:26:12,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 44. [2021-10-11 02:26:12,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2021-10-11 02:26:12,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 50 transitions. [2021-10-11 02:26:12,504 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 50 transitions. Word has length 17 [2021-10-11 02:26:12,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:12,504 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 50 transitions. [2021-10-11 02:26:12,504 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-10-11 02:26:12,504 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 50 transitions. [2021-10-11 02:26:12,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-11 02:26:12,504 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:12,505 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:26:12,731 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:26:12,731 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:26:12,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:12,732 INFO L82 PathProgramCache]: Analyzing trace with hash 841443737, now seen corresponding path program 1 times [2021-10-11 02:26:12,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:12,732 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832000631] [2021-10-11 02:26:12,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:12,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:12,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:26:12,811 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832000631] [2021-10-11 02:26:12,811 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:26:12,811 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-11 02:26:12,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455629925] [2021-10-11 02:26:12,811 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 02:26:12,811 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:12,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 02:26:12,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:26:12,812 INFO L87 Difference]: Start difference. First operand 44 states and 50 transitions. Second operand 6 states. [2021-10-11 02:26:12,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:12,932 INFO L93 Difference]: Finished difference Result 59 states and 67 transitions. [2021-10-11 02:26:12,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 02:26:12,933 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2021-10-11 02:26:12,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:12,933 INFO L225 Difference]: With dead ends: 59 [2021-10-11 02:26:12,933 INFO L226 Difference]: Without dead ends: 57 [2021-10-11 02:26:12,934 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-11 02:26:12,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-10-11 02:26:12,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 39. [2021-10-11 02:26:12,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2021-10-11 02:26:12,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 45 transitions. [2021-10-11 02:26:12,940 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 45 transitions. Word has length 17 [2021-10-11 02:26:12,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:12,940 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 45 transitions. [2021-10-11 02:26:12,941 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 02:26:12,941 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 45 transitions. [2021-10-11 02:26:12,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-11 02:26:12,944 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:12,944 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:26:12,944 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-10-11 02:26:12,945 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:26:12,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:12,945 INFO L82 PathProgramCache]: Analyzing trace with hash -1969266840, now seen corresponding path program 1 times [2021-10-11 02:26:12,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:12,946 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273641296] [2021-10-11 02:26:12,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:12,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:13,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:26:13,026 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273641296] [2021-10-11 02:26:13,026 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:26:13,026 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-11 02:26:13,026 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182744000] [2021-10-11 02:26:13,026 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-10-11 02:26:13,026 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:13,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-11 02:26:13,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:26:13,027 INFO L87 Difference]: Start difference. First operand 39 states and 45 transitions. Second operand 7 states. [2021-10-11 02:26:13,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:13,123 INFO L93 Difference]: Finished difference Result 51 states and 59 transitions. [2021-10-11 02:26:13,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 02:26:13,124 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2021-10-11 02:26:13,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:13,125 INFO L225 Difference]: With dead ends: 51 [2021-10-11 02:26:13,125 INFO L226 Difference]: Without dead ends: 49 [2021-10-11 02:26:13,126 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-11 02:26:13,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-10-11 02:26:13,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 34. [2021-10-11 02:26:13,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2021-10-11 02:26:13,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2021-10-11 02:26:13,133 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 18 [2021-10-11 02:26:13,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:13,134 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2021-10-11 02:26:13,134 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-10-11 02:26:13,134 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2021-10-11 02:26:13,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-11 02:26:13,134 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:13,135 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:26:13,135 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-10-11 02:26:13,135 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:26:13,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:13,139 INFO L82 PathProgramCache]: Analyzing trace with hash -1915825760, now seen corresponding path program 1 times [2021-10-11 02:26:13,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:13,139 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55665263] [2021-10-11 02:26:13,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:13,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:13,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:26:13,217 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55665263] [2021-10-11 02:26:13,218 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:26:13,218 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-11 02:26:13,218 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159664338] [2021-10-11 02:26:13,218 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-10-11 02:26:13,218 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:13,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-11 02:26:13,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:26:13,221 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand 7 states. [2021-10-11 02:26:13,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:13,299 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2021-10-11 02:26:13,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:26:13,299 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2021-10-11 02:26:13,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:13,300 INFO L225 Difference]: With dead ends: 34 [2021-10-11 02:26:13,300 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:26:13,300 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-11 02:26:13,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:26:13,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:26:13,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:26:13,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:26:13,301 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2021-10-11 02:26:13,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:13,301 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:26:13,301 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-10-11 02:26:13,302 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:26:13,302 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:26:13,302 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-10-11 02:26:13,304 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 02:26:13,697 WARN L197 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 25 [2021-10-11 02:26:14,039 WARN L197 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 30 [2021-10-11 02:26:14,042 INFO L262 CegarLoopResult]: For program point L126(line 126) no Hoare annotation was computed. [2021-10-11 02:26:14,042 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION(line 224) no Hoare annotation was computed. [2021-10-11 02:26:14,042 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 72) no Hoare annotation was computed. [2021-10-11 02:26:14,043 INFO L262 CegarLoopResult]: For program point L52(line 52) no Hoare annotation was computed. [2021-10-11 02:26:14,043 INFO L262 CegarLoopResult]: For program point L176(line 176) no Hoare annotation was computed. [2021-10-11 02:26:14,043 INFO L262 CegarLoopResult]: For program point L366(line 366) no Hoare annotation was computed. [2021-10-11 02:26:14,043 INFO L262 CegarLoopResult]: For program point L333(line 333) no Hoare annotation was computed. [2021-10-11 02:26:14,043 INFO L262 CegarLoopResult]: For program point L234(lines 234 242) no Hoare annotation was computed. [2021-10-11 02:26:14,043 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION(line 297) no Hoare annotation was computed. [2021-10-11 02:26:14,043 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 126) no Hoare annotation was computed. [2021-10-11 02:26:14,043 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 02:26:14,044 INFO L262 CegarLoopResult]: For program point L152(lines 152 160) no Hoare annotation was computed. [2021-10-11 02:26:14,044 INFO L262 CegarLoopResult]: For program point L309(line 309) no Hoare annotation was computed. [2021-10-11 02:26:14,045 INFO L262 CegarLoopResult]: For program point L20(lines 20 401) no Hoare annotation was computed. [2021-10-11 02:26:14,045 INFO L262 CegarLoopResult]: For program point L276(lines 276 391) no Hoare annotation was computed. [2021-10-11 02:26:14,045 INFO L265 CegarLoopResult]: At program point L400(lines 15 402) the Hoare annotation is: true [2021-10-11 02:26:14,045 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION(line 345) no Hoare annotation was computed. [2021-10-11 02:26:14,045 INFO L262 CegarLoopResult]: For program point L70(lines 70 94) no Hoare annotation was computed. [2021-10-11 02:26:14,046 INFO L258 CegarLoopResult]: At program point L384(lines 282 391) the Hoare annotation is: (let ((.cse1 (= ULTIMATE.start_main_~main__t~0 0))) (let ((.cse0 (let ((.cse3 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~13 0)))) (or (and .cse3 .cse1) (and .cse3 (<= 1 ULTIMATE.start_main_~main__t~0))))) (.cse2 (= ULTIMATE.start_main_~__VERIFIER_assert__cond~12 1))) (or (and .cse0 (< 0 ULTIMATE.start_main_~main__tagbuf_len~0) .cse1 .cse2) (and (< ULTIMATE.start_main_~main__t~0 ULTIMATE.start_main_~main__tagbuf_len~0) (= ULTIMATE.start_main_~__VERIFIER_assert__cond~19 1) .cse0 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~18 0)) .cse2)))) [2021-10-11 02:26:14,048 INFO L258 CegarLoopResult]: At program point L351(lines 32 395) the Hoare annotation is: (or (and (< ULTIMATE.start_main_~main__t~0 ULTIMATE.start_main_~main__tagbuf_len~0) (let ((.cse0 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~13 0))) (.cse1 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~16 0)))) (or (and .cse0 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~19 0)) .cse1) (and .cse0 .cse1 (<= ULTIMATE.start_main_~main__t~0 1)))) (<= 1 ULTIMATE.start_main_~main__t~0) (= ULTIMATE.start_main_~__VERIFIER_assert__cond~17 1) (= ULTIMATE.start_main_~__VERIFIER_assert__cond~12 1)) (and (< 0 ULTIMATE.start_main_~main__tagbuf_len~0) (= ULTIMATE.start_main_~main__t~0 0))) [2021-10-11 02:26:14,048 INFO L262 CegarLoopResult]: For program point L186(lines 186 196) no Hoare annotation was computed. [2021-10-11 02:26:14,048 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION(line 278) no Hoare annotation was computed. [2021-10-11 02:26:14,048 INFO L262 CegarLoopResult]: For program point L376(lines 376 385) no Hoare annotation was computed. [2021-10-11 02:26:14,048 INFO L262 CegarLoopResult]: For program point L343(lines 343 352) no Hoare annotation was computed. [2021-10-11 02:26:14,048 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 114) no Hoare annotation was computed. [2021-10-11 02:26:14,048 INFO L262 CegarLoopResult]: For program point L112(lines 112 203) no Hoare annotation was computed. [2021-10-11 02:26:14,049 INFO L262 CegarLoopResult]: For program point L236(line 236) no Hoare annotation was computed. [2021-10-11 02:26:14,049 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION(line 333) no Hoare annotation was computed. [2021-10-11 02:26:14,049 INFO L258 CegarLoopResult]: At program point L195(lines 56 253) the Hoare annotation is: (and (<= 1 ULTIMATE.start_main_~main__t~0) (<= ULTIMATE.start_main_~main__t~0 ULTIMATE.start_main_~main__tagbuf_len~0)) [2021-10-11 02:26:14,049 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 154) no Hoare annotation was computed. [2021-10-11 02:26:14,049 INFO L262 CegarLoopResult]: For program point L154(line 154) no Hoare annotation was computed. [2021-10-11 02:26:14,049 INFO L262 CegarLoopResult]: For program point L278(line 278) no Hoare annotation was computed. [2021-10-11 02:26:14,049 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION(line 378) no Hoare annotation was computed. [2021-10-11 02:26:14,049 INFO L262 CegarLoopResult]: For program point L105(lines 105 209) no Hoare annotation was computed. [2021-10-11 02:26:14,050 INFO L262 CegarLoopResult]: For program point L72(line 72) no Hoare annotation was computed. [2021-10-11 02:26:14,050 INFO L262 CegarLoopResult]: For program point L39(lines 39 255) no Hoare annotation was computed. [2021-10-11 02:26:14,050 INFO L262 CegarLoopResult]: For program point L295(lines 295 317) no Hoare annotation was computed. [2021-10-11 02:26:14,050 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 142) no Hoare annotation was computed. [2021-10-11 02:26:14,050 INFO L262 CegarLoopResult]: For program point L188(line 188) no Hoare annotation was computed. [2021-10-11 02:26:14,050 INFO L262 CegarLoopResult]: For program point L378(line 378) no Hoare annotation was computed. [2021-10-11 02:26:14,050 INFO L262 CegarLoopResult]: For program point L345(line 345) no Hoare annotation was computed. [2021-10-11 02:26:14,050 INFO L262 CegarLoopResult]: For program point L114(line 114) no Hoare annotation was computed. [2021-10-11 02:26:14,051 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION(line 366) no Hoare annotation was computed. [2021-10-11 02:26:14,051 INFO L262 CegarLoopResult]: For program point L32(lines 32 395) no Hoare annotation was computed. [2021-10-11 02:26:14,051 INFO L262 CegarLoopResult]: For program point L288(lines 288 390) no Hoare annotation was computed. [2021-10-11 02:26:14,051 INFO L262 CegarLoopResult]: For program point L222(lines 222 244) no Hoare annotation was computed. [2021-10-11 02:26:14,051 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION(line 188) no Hoare annotation was computed. [2021-10-11 02:26:14,051 INFO L262 CegarLoopResult]: For program point L24(lines 24 396) no Hoare annotation was computed. [2021-10-11 02:26:14,052 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 52) no Hoare annotation was computed. [2021-10-11 02:26:14,052 INFO L262 CegarLoopResult]: For program point L82(lines 82 92) no Hoare annotation was computed. [2021-10-11 02:26:14,052 INFO L262 CegarLoopResult]: For program point L140(lines 140 162) no Hoare annotation was computed. [2021-10-11 02:26:14,052 INFO L262 CegarLoopResult]: For program point L297(line 297) no Hoare annotation was computed. [2021-10-11 02:26:14,052 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 02:26:14,052 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION(line 176) no Hoare annotation was computed. [2021-10-11 02:26:14,052 INFO L262 CegarLoopResult]: For program point L124(lines 124 201) no Hoare annotation was computed. [2021-10-11 02:26:14,053 INFO L265 CegarLoopResult]: At program point L314(lines 32 395) the Hoare annotation is: true [2021-10-11 02:26:14,053 INFO L262 CegarLoopResult]: For program point L215(lines 215 250) no Hoare annotation was computed. [2021-10-11 02:26:14,053 INFO L262 CegarLoopResult]: For program point L50(lines 50 253) no Hoare annotation was computed. [2021-10-11 02:26:14,053 INFO L262 CegarLoopResult]: For program point L174(lines 174 198) no Hoare annotation was computed. [2021-10-11 02:26:14,053 INFO L262 CegarLoopResult]: For program point L364(lines 364 387) no Hoare annotation was computed. [2021-10-11 02:26:14,053 INFO L262 CegarLoopResult]: For program point L331(lines 331 354) no Hoare annotation was computed. [2021-10-11 02:26:14,053 INFO L262 CegarLoopResult]: For program point L265(lines 265 393) no Hoare annotation was computed. [2021-10-11 02:26:14,053 INFO L262 CegarLoopResult]: For program point L133(lines 133 200) no Hoare annotation was computed. [2021-10-11 02:26:14,054 INFO L262 CegarLoopResult]: For program point L224(line 224) no Hoare annotation was computed. [2021-10-11 02:26:14,054 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION(line 236) no Hoare annotation was computed. [2021-10-11 02:26:14,054 INFO L258 CegarLoopResult]: At program point L249(lines 101 251) the Hoare annotation is: (and (< ULTIMATE.start_main_~main__t~0 ULTIMATE.start_main_~main__tagbuf_len~0) (<= 1 ULTIMATE.start_main_~main__t~0)) [2021-10-11 02:26:14,054 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 84) no Hoare annotation was computed. [2021-10-11 02:26:14,054 INFO L262 CegarLoopResult]: For program point L84(line 84) no Hoare annotation was computed. [2021-10-11 02:26:14,054 INFO L262 CegarLoopResult]: For program point L307(lines 307 315) no Hoare annotation was computed. [2021-10-11 02:26:14,054 INFO L262 CegarLoopResult]: For program point L142(line 142) no Hoare annotation was computed. [2021-10-11 02:26:14,055 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION(line 309) no Hoare annotation was computed. [2021-10-11 02:26:14,055 INFO L262 CegarLoopResult]: For program point L101(lines 101 251) no Hoare annotation was computed. [2021-10-11 02:26:14,055 INFO L262 CegarLoopResult]: For program point L324(lines 324 389) no Hoare annotation was computed. [2021-10-11 02:26:14,095 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:26:14 BoogieIcfgContainer [2021-10-11 02:26:14,095 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:26:14,096 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:26:14,096 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:26:14,096 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:26:14,097 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:26:01" (3/4) ... [2021-10-11 02:26:14,100 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:26:14,124 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2021-10-11 02:26:14,125 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-11 02:26:14,125 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:26:14,126 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:26:14,224 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1bc13c5-48ed-4731-9b10-cdde46310b40/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:26:14,224 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:26:14,225 INFO L168 Benchmark]: Toolchain (without parser) took 13590.78 ms. Allocated memory was 81.8 MB in the beginning and 226.5 MB in the end (delta: 144.7 MB). Free memory was 45.2 MB in the beginning and 106.6 MB in the end (delta: -61.5 MB). Peak memory consumption was 84.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:26:14,225 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 81.8 MB. Free memory was 61.7 MB in the beginning and 61.6 MB in the end (delta: 38.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:26:14,226 INFO L168 Benchmark]: CACSL2BoogieTranslator took 418.15 ms. Allocated memory was 81.8 MB in the beginning and 100.7 MB in the end (delta: 18.9 MB). Free memory was 45.0 MB in the beginning and 73.5 MB in the end (delta: -28.6 MB). Peak memory consumption was 13.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:26:14,226 INFO L168 Benchmark]: Boogie Procedure Inliner took 61.00 ms. Allocated memory is still 100.7 MB. Free memory was 73.5 MB in the beginning and 71.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:26:14,227 INFO L168 Benchmark]: Boogie Preprocessor took 38.40 ms. Allocated memory is still 100.7 MB. Free memory was 71.5 MB in the beginning and 70.3 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:26:14,227 INFO L168 Benchmark]: RCFGBuilder took 823.55 ms. Allocated memory is still 100.7 MB. Free memory was 70.3 MB in the beginning and 42.7 MB in the end (delta: 27.6 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. [2021-10-11 02:26:14,227 INFO L168 Benchmark]: TraceAbstraction took 12113.10 ms. Allocated memory was 100.7 MB in the beginning and 226.5 MB in the end (delta: 125.8 MB). Free memory was 42.1 MB in the beginning and 111.9 MB in the end (delta: -69.8 MB). Peak memory consumption was 99.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:26:14,228 INFO L168 Benchmark]: Witness Printer took 128.50 ms. Allocated memory is still 226.5 MB. Free memory was 111.9 MB in the beginning and 106.6 MB in the end (delta: 5.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:26:14,231 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 81.8 MB. Free memory was 61.7 MB in the beginning and 61.6 MB in the end (delta: 38.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 418.15 ms. Allocated memory was 81.8 MB in the beginning and 100.7 MB in the end (delta: 18.9 MB). Free memory was 45.0 MB in the beginning and 73.5 MB in the end (delta: -28.6 MB). Peak memory consumption was 13.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 61.00 ms. Allocated memory is still 100.7 MB. Free memory was 73.5 MB in the beginning and 71.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 38.40 ms. Allocated memory is still 100.7 MB. Free memory was 71.5 MB in the beginning and 70.3 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 823.55 ms. Allocated memory is still 100.7 MB. Free memory was 70.3 MB in the beginning and 42.7 MB in the end (delta: 27.6 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 12113.10 ms. Allocated memory was 100.7 MB in the beginning and 226.5 MB in the end (delta: 125.8 MB). Free memory was 42.1 MB in the beginning and 111.9 MB in the end (delta: -69.8 MB). Peak memory consumption was 99.2 MB. Max. memory is 16.1 GB. * Witness Printer took 128.50 ms. Allocated memory is still 226.5 MB. Free memory was 111.9 MB in the beginning and 106.6 MB in the end (delta: 5.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 72]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 188]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 176]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 366]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 345]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 378]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 114]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 52]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 84]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 297]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 126]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 142]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 154]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 236]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 333]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 309]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 278]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 224]: 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 18 specifications checked. All of them hold - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 282]: Loop Invariant Derived loop invariant: (((((!(__VERIFIER_assert__cond == 0) && main__t == 0) || (!(__VERIFIER_assert__cond == 0) && 1 <= main__t)) && 0 < main__tagbuf_len) && main__t == 0) && __VERIFIER_assert__cond == 1) || ((((main__t < main__tagbuf_len && __VERIFIER_assert__cond == 1) && ((!(__VERIFIER_assert__cond == 0) && main__t == 0) || (!(__VERIFIER_assert__cond == 0) && 1 <= main__t))) && !(__VERIFIER_assert__cond == 0)) && __VERIFIER_assert__cond == 1) - InvariantResult [Line: 56]: Loop Invariant Derived loop invariant: 1 <= main__t && main__t <= main__tagbuf_len - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 101]: Loop Invariant Derived loop invariant: main__t < main__tagbuf_len && 1 <= main__t - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: ((((main__t < main__tagbuf_len && (((!(__VERIFIER_assert__cond == 0) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) || ((!(__VERIFIER_assert__cond == 0) && !(__VERIFIER_assert__cond == 0)) && main__t <= 1))) && 1 <= main__t) && __VERIFIER_assert__cond == 1) && __VERIFIER_assert__cond == 1) || (0 < main__tagbuf_len && main__t == 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 73 locations, 18 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 11.2s, OverallIterations: 22, TraceHistogramMax: 2, AutomataDifference: 3.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.7s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 973 SDtfs, 1434 SDslu, 1466 SDs, 0 SdLazy, 1724 SolverSat, 151 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 204 GetRequests, 79 SyntacticMatches, 4 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 282 ImplicationChecksByTransitivity, 5.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=73occurred in iteration=0, 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, 22 MinimizatonAttempts, 436 StatesRemovedByMinimization, 19 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 12 NumberOfFragments, 122 HoareAnnotationTreeSize, 6 FomulaSimplifications, 1331350 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 6 FomulaSimplificationsInter, 345243 FormulaSimplificationTreeSizeReductionInter, 0.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 297 NumberOfCodeBlocks, 297 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 290 ConstructedInterpolants, 0 QuantifiedInterpolants, 12180 SizeOfPredicates, 8 NumberOfNonLiveVariables, 114 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 24 InterpolantComputations, 21 PerfectInterpolantSequences, 6/9 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...