./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f7d67ef-b93f-4869-9073-2535855eae75/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f7d67ef-b93f-4869-9073-2535855eae75/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f7d67ef-b93f-4869-9073-2535855eae75/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f7d67ef-b93f-4869-9073-2535855eae75/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f7d67ef-b93f-4869-9073-2535855eae75/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f7d67ef-b93f-4869-9073-2535855eae75/bin/utaipan-UbGMyvGFUs --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 5990b1cf211e12a23ca85722a0e539783495fb8504bce43e0d5e789fe089f178 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 13:34:56,066 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 13:34:56,069 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 13:34:56,121 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 13:34:56,122 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 13:34:56,125 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 13:34:56,127 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 13:34:56,131 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 13:34:56,134 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 13:34:56,140 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 13:34:56,141 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 13:34:56,143 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 13:34:56,144 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 13:34:56,146 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 13:34:56,149 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 13:34:56,157 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 13:34:56,159 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 13:34:56,160 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 13:34:56,163 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 13:34:56,171 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 13:34:56,173 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 13:34:56,174 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 13:34:56,178 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 13:34:56,179 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 13:34:56,188 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 13:34:56,189 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 13:34:56,189 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 13:34:56,191 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 13:34:56,192 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 13:34:56,194 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 13:34:56,194 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 13:34:56,196 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 13:34:56,198 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 13:34:56,199 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 13:34:56,201 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 13:34:56,201 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 13:34:56,202 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 13:34:56,202 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 13:34:56,203 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 13:34:56,204 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 13:34:56,204 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 13:34:56,205 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f7d67ef-b93f-4869-9073-2535855eae75/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-19 13:34:56,247 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 13:34:56,247 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 13:34:56,249 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 13:34:56,249 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 13:34:56,250 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 13:34:56,250 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 13:34:56,250 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 13:34:56,250 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 13:34:56,257 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 13:34:56,257 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 13:34:56,259 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 13:34:56,259 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 13:34:56,259 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 13:34:56,259 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 13:34:56,260 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 13:34:56,260 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 13:34:56,261 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 13:34:56,261 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 13:34:56,261 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 13:34:56,262 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 13:34:56,262 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 13:34:56,262 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 13:34:56,262 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 13:34:56,263 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 13:34:56,263 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 13:34:56,263 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 13:34:56,263 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 13:34:56,264 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 13:34:56,264 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 13:34:56,265 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 13:34:56,266 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 13:34:56,266 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:34:56,266 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 13:34:56,267 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 13:34:56,267 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 13:34:56,267 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 13:34:56,267 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 13:34:56,268 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 13:34:56,268 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 13:34:56,268 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 13:34:56,268 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_9f7d67ef-b93f-4869-9073-2535855eae75/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f7d67ef-b93f-4869-9073-2535855eae75/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5990b1cf211e12a23ca85722a0e539783495fb8504bce43e0d5e789fe089f178 [2021-11-19 13:34:56,514 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 13:34:56,546 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 13:34:56,548 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 13:34:56,550 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 13:34:56,551 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 13:34:56,552 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f7d67ef-b93f-4869-9073-2535855eae75/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c [2021-11-19 13:34:56,641 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f7d67ef-b93f-4869-9073-2535855eae75/bin/utaipan-UbGMyvGFUs/data/754293527/ee7bcb64f68f49278fb104e5b872a0bb/FLAGf4e2e2839 [2021-11-19 13:34:57,266 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 13:34:57,266 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f7d67ef-b93f-4869-9073-2535855eae75/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c [2021-11-19 13:34:57,298 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f7d67ef-b93f-4869-9073-2535855eae75/bin/utaipan-UbGMyvGFUs/data/754293527/ee7bcb64f68f49278fb104e5b872a0bb/FLAGf4e2e2839 [2021-11-19 13:34:57,485 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f7d67ef-b93f-4869-9073-2535855eae75/bin/utaipan-UbGMyvGFUs/data/754293527/ee7bcb64f68f49278fb104e5b872a0bb [2021-11-19 13:34:57,487 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 13:34:57,488 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 13:34:57,495 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 13:34:57,496 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 13:34:57,498 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 13:34:57,499 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:34:57" (1/1) ... [2021-11-19 13:34:57,500 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f615453 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:34:57, skipping insertion in model container [2021-11-19 13:34:57,500 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:34:57" (1/1) ... [2021-11-19 13:34:57,510 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 13:34:57,606 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 13:34:58,063 WARN L230 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_9f7d67ef-b93f-4869-9073-2535855eae75/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[18815,18828] [2021-11-19 13:34:58,101 WARN L230 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_9f7d67ef-b93f-4869-9073-2535855eae75/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[25895,25908] [2021-11-19 13:34:58,139 WARN L230 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_9f7d67ef-b93f-4869-9073-2535855eae75/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[29420,29433] [2021-11-19 13:34:58,155 WARN L230 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_9f7d67ef-b93f-4869-9073-2535855eae75/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[32798,32811] [2021-11-19 13:34:58,175 WARN L230 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_9f7d67ef-b93f-4869-9073-2535855eae75/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[36856,36869] [2021-11-19 13:34:58,190 WARN L230 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_9f7d67ef-b93f-4869-9073-2535855eae75/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[40310,40323] [2021-11-19 13:34:58,206 WARN L230 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_9f7d67ef-b93f-4869-9073-2535855eae75/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[43875,43888] [2021-11-19 13:34:58,222 WARN L230 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_9f7d67ef-b93f-4869-9073-2535855eae75/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[47290,47303] [2021-11-19 13:34:58,255 WARN L230 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_9f7d67ef-b93f-4869-9073-2535855eae75/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[50969,50982] [2021-11-19 13:34:58,286 WARN L230 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_9f7d67ef-b93f-4869-9073-2535855eae75/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[54551,54564] [2021-11-19 13:34:58,301 WARN L230 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_9f7d67ef-b93f-4869-9073-2535855eae75/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[58080,58093] [2021-11-19 13:34:58,342 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:34:58,355 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 13:34:58,508 WARN L230 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_9f7d67ef-b93f-4869-9073-2535855eae75/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[18815,18828] [2021-11-19 13:34:58,572 WARN L230 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_9f7d67ef-b93f-4869-9073-2535855eae75/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[25895,25908] [2021-11-19 13:34:58,608 WARN L230 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_9f7d67ef-b93f-4869-9073-2535855eae75/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[29420,29433] [2021-11-19 13:34:58,635 WARN L230 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_9f7d67ef-b93f-4869-9073-2535855eae75/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[32798,32811] [2021-11-19 13:34:58,660 WARN L230 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_9f7d67ef-b93f-4869-9073-2535855eae75/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[36856,36869] [2021-11-19 13:34:58,676 WARN L230 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_9f7d67ef-b93f-4869-9073-2535855eae75/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[40310,40323] [2021-11-19 13:34:58,702 WARN L230 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_9f7d67ef-b93f-4869-9073-2535855eae75/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[43875,43888] [2021-11-19 13:34:58,712 WARN L230 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_9f7d67ef-b93f-4869-9073-2535855eae75/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[47290,47303] [2021-11-19 13:34:58,724 WARN L230 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_9f7d67ef-b93f-4869-9073-2535855eae75/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[50969,50982] [2021-11-19 13:34:58,746 WARN L230 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_9f7d67ef-b93f-4869-9073-2535855eae75/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[54551,54564] [2021-11-19 13:34:58,756 WARN L230 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_9f7d67ef-b93f-4869-9073-2535855eae75/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[58080,58093] [2021-11-19 13:34:58,788 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:34:58,818 INFO L208 MainTranslator]: Completed translation [2021-11-19 13:34:58,819 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:34:58 WrapperNode [2021-11-19 13:34:58,819 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 13:34:58,820 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 13:34:58,821 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 13:34:58,821 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 13:34:58,828 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:34:58" (1/1) ... [2021-11-19 13:34:58,853 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:34:58" (1/1) ... [2021-11-19 13:34:58,950 INFO L137 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 2761 [2021-11-19 13:34:58,950 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 13:34:58,951 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 13:34:58,951 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 13:34:58,952 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 13:34:58,961 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:34:58" (1/1) ... [2021-11-19 13:34:58,961 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:34:58" (1/1) ... [2021-11-19 13:34:58,967 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:34:58" (1/1) ... [2021-11-19 13:34:58,968 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:34:58" (1/1) ... [2021-11-19 13:34:58,996 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:34:58" (1/1) ... [2021-11-19 13:34:59,016 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:34:58" (1/1) ... [2021-11-19 13:34:59,024 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:34:58" (1/1) ... [2021-11-19 13:34:59,039 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 13:34:59,040 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 13:34:59,040 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 13:34:59,040 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 13:34:59,041 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:34:58" (1/1) ... [2021-11-19 13:34:59,049 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:34:59,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f7d67ef-b93f-4869-9073-2535855eae75/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:34:59,093 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f7d67ef-b93f-4869-9073-2535855eae75/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 13:34:59,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f7d67ef-b93f-4869-9073-2535855eae75/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 13:34:59,140 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 13:34:59,140 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-19 13:34:59,140 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 13:34:59,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 13:34:59,326 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 13:34:59,328 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 13:35:00,989 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 13:35:01,099 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 13:35:01,100 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-19 13:35:01,105 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:35:01 BoogieIcfgContainer [2021-11-19 13:35:01,105 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 13:35:01,107 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 13:35:01,107 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 13:35:01,115 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 13:35:01,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 01:34:57" (1/3) ... [2021-11-19 13:35:01,116 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f26ceeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:35:01, skipping insertion in model container [2021-11-19 13:35:01,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:34:58" (2/3) ... [2021-11-19 13:35:01,117 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f26ceeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:35:01, skipping insertion in model container [2021-11-19 13:35:01,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:35:01" (3/3) ... [2021-11-19 13:35:01,118 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c [2021-11-19 13:35:01,153 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 13:35:01,154 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2021-11-19 13:35:01,206 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 13:35:01,213 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-19 13:35:01,213 INFO L340 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-11-19 13:35:01,242 INFO L276 IsEmpty]: Start isEmpty. Operand has 551 states, 539 states have (on average 1.784786641929499) internal successors, (962), 550 states have internal predecessors, (962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:01,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-19 13:35:01,259 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:35:01,260 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:35:01,260 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-19 13:35:01,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:35:01,266 INFO L85 PathProgramCache]: Analyzing trace with hash -1518492486, now seen corresponding path program 1 times [2021-11-19 13:35:01,275 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:35:01,276 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037587408] [2021-11-19 13:35:01,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:35:01,277 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:35:01,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:35:01,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:35:01,667 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:35:01,667 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037587408] [2021-11-19 13:35:01,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037587408] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:35:01,668 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:35:01,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-19 13:35:01,670 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532802367] [2021-11-19 13:35:01,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:35:01,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 13:35:01,676 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:35:01,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 13:35:01,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 13:35:01,707 INFO L87 Difference]: Start difference. First operand has 551 states, 539 states have (on average 1.784786641929499) internal successors, (962), 550 states have internal predecessors, (962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:02,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:35:02,353 INFO L93 Difference]: Finished difference Result 746 states and 1267 transitions. [2021-11-19 13:35:02,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 13:35:02,356 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-11-19 13:35:02,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:35:02,380 INFO L225 Difference]: With dead ends: 746 [2021-11-19 13:35:02,380 INFO L226 Difference]: Without dead ends: 485 [2021-11-19 13:35:02,384 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-19 13:35:02,387 INFO L933 BasicCegarLoop]: 461 mSDtfsCounter, 2320 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 362 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2320 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-19 13:35:02,389 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2320 Valid, 517 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 362 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-19 13:35:02,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2021-11-19 13:35:02,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 485. [2021-11-19 13:35:02,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 485 states, 474 states have (on average 1.2552742616033756) internal successors, (595), 484 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:02,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 595 transitions. [2021-11-19 13:35:02,462 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 595 transitions. Word has length 59 [2021-11-19 13:35:02,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:35:02,462 INFO L470 AbstractCegarLoop]: Abstraction has 485 states and 595 transitions. [2021-11-19 13:35:02,463 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:02,463 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 595 transitions. [2021-11-19 13:35:02,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-19 13:35:02,466 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:35:02,466 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:35:02,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-19 13:35:02,467 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-19 13:35:02,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:35:02,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1943729877, now seen corresponding path program 1 times [2021-11-19 13:35:02,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:35:02,468 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803186411] [2021-11-19 13:35:02,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:35:02,469 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:35:02,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:35:02,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:35:02,635 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:35:02,635 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803186411] [2021-11-19 13:35:02,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803186411] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:35:02,636 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:35:02,636 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-19 13:35:02,636 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421348231] [2021-11-19 13:35:02,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:35:02,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 13:35:02,644 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:35:02,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 13:35:02,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 13:35:02,645 INFO L87 Difference]: Start difference. First operand 485 states and 595 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:02,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:35:02,891 INFO L93 Difference]: Finished difference Result 566 states and 685 transitions. [2021-11-19 13:35:02,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 13:35:02,892 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-11-19 13:35:02,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:35:02,899 INFO L225 Difference]: With dead ends: 566 [2021-11-19 13:35:02,900 INFO L226 Difference]: Without dead ends: 333 [2021-11-19 13:35:02,903 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-19 13:35:02,905 INFO L933 BasicCegarLoop]: 214 mSDtfsCounter, 1137 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1137 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:35:02,906 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1137 Valid, 234 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 13:35:02,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2021-11-19 13:35:02,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 333. [2021-11-19 13:35:02,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 322 states have (on average 1.2484472049689441) internal successors, (402), 332 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:02,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 402 transitions. [2021-11-19 13:35:02,952 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 402 transitions. Word has length 59 [2021-11-19 13:35:02,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:35:02,953 INFO L470 AbstractCegarLoop]: Abstraction has 333 states and 402 transitions. [2021-11-19 13:35:02,953 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:02,953 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 402 transitions. [2021-11-19 13:35:02,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-19 13:35:02,978 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:35:02,978 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:35:02,978 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-19 13:35:02,978 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-19 13:35:02,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:35:02,979 INFO L85 PathProgramCache]: Analyzing trace with hash -19682530, now seen corresponding path program 1 times [2021-11-19 13:35:02,979 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:35:02,980 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997720008] [2021-11-19 13:35:02,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:35:02,980 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:35:03,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:35:03,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:35:03,118 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:35:03,118 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997720008] [2021-11-19 13:35:03,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997720008] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:35:03,120 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:35:03,121 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-19 13:35:03,121 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435592497] [2021-11-19 13:35:03,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:35:03,122 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 13:35:03,122 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:35:03,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 13:35:03,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 13:35:03,123 INFO L87 Difference]: Start difference. First operand 333 states and 402 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:03,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:35:03,310 INFO L93 Difference]: Finished difference Result 456 states and 553 transitions. [2021-11-19 13:35:03,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 13:35:03,311 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-11-19 13:35:03,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:35:03,313 INFO L225 Difference]: With dead ends: 456 [2021-11-19 13:35:03,313 INFO L226 Difference]: Without dead ends: 284 [2021-11-19 13:35:03,314 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-19 13:35:03,315 INFO L933 BasicCegarLoop]: 195 mSDtfsCounter, 990 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 990 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:35:03,316 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [990 Valid, 199 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:35:03,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2021-11-19 13:35:03,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 284. [2021-11-19 13:35:03,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 273 states have (on average 1.26007326007326) internal successors, (344), 283 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:03,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 344 transitions. [2021-11-19 13:35:03,333 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 344 transitions. Word has length 59 [2021-11-19 13:35:03,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:35:03,333 INFO L470 AbstractCegarLoop]: Abstraction has 284 states and 344 transitions. [2021-11-19 13:35:03,334 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:03,334 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 344 transitions. [2021-11-19 13:35:03,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-19 13:35:03,335 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:35:03,335 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:35:03,336 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-19 13:35:03,336 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-19 13:35:03,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:35:03,337 INFO L85 PathProgramCache]: Analyzing trace with hash -732780502, now seen corresponding path program 1 times [2021-11-19 13:35:03,337 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:35:03,337 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247047227] [2021-11-19 13:35:03,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:35:03,338 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:35:03,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:35:03,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:35:03,437 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:35:03,441 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247047227] [2021-11-19 13:35:03,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247047227] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:35:03,441 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:35:03,441 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-19 13:35:03,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858406802] [2021-11-19 13:35:03,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:35:03,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 13:35:03,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:35:03,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 13:35:03,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 13:35:03,450 INFO L87 Difference]: Start difference. First operand 284 states and 344 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:03,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:35:03,618 INFO L93 Difference]: Finished difference Result 389 states and 468 transitions. [2021-11-19 13:35:03,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 13:35:03,619 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-11-19 13:35:03,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:35:03,621 INFO L225 Difference]: With dead ends: 389 [2021-11-19 13:35:03,622 INFO L226 Difference]: Without dead ends: 243 [2021-11-19 13:35:03,622 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-19 13:35:03,624 INFO L933 BasicCegarLoop]: 173 mSDtfsCounter, 823 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 823 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:35:03,626 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [823 Valid, 185 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:35:03,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2021-11-19 13:35:03,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 243. [2021-11-19 13:35:03,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 232 states have (on average 1.2586206896551724) internal successors, (292), 242 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:03,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 292 transitions. [2021-11-19 13:35:03,647 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 292 transitions. Word has length 61 [2021-11-19 13:35:03,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:35:03,649 INFO L470 AbstractCegarLoop]: Abstraction has 243 states and 292 transitions. [2021-11-19 13:35:03,649 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:03,649 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 292 transitions. [2021-11-19 13:35:03,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-19 13:35:03,651 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:35:03,651 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:35:03,652 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-19 13:35:03,652 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-19 13:35:03,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:35:03,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1082227329, now seen corresponding path program 1 times [2021-11-19 13:35:03,654 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:35:03,654 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656218953] [2021-11-19 13:35:03,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:35:03,655 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:35:03,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:35:03,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:35:03,871 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:35:03,871 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656218953] [2021-11-19 13:35:03,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656218953] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:35:03,871 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:35:03,872 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 13:35:03,872 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879127981] [2021-11-19 13:35:03,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:35:03,873 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 13:35:03,873 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:35:03,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 13:35:03,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:35:03,874 INFO L87 Difference]: Start difference. First operand 243 states and 292 transitions. Second operand has 8 states, 8 states have (on average 7.875) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:04,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:35:04,503 INFO L93 Difference]: Finished difference Result 521 states and 638 transitions. [2021-11-19 13:35:04,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 13:35:04,504 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-19 13:35:04,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:35:04,506 INFO L225 Difference]: With dead ends: 521 [2021-11-19 13:35:04,506 INFO L226 Difference]: Without dead ends: 446 [2021-11-19 13:35:04,507 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-19 13:35:04,508 INFO L933 BasicCegarLoop]: 205 mSDtfsCounter, 895 mSDsluCounter, 627 mSDsCounter, 0 mSdLazyCounter, 680 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 895 SdHoareTripleChecker+Valid, 826 SdHoareTripleChecker+Invalid, 696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 680 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 13:35:04,508 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [895 Valid, 826 Invalid, 696 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 680 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 13:35:04,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2021-11-19 13:35:04,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 243. [2021-11-19 13:35:04,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 232 states have (on average 1.2543103448275863) internal successors, (291), 242 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:04,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 291 transitions. [2021-11-19 13:35:04,535 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 291 transitions. Word has length 63 [2021-11-19 13:35:04,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:35:04,537 INFO L470 AbstractCegarLoop]: Abstraction has 243 states and 291 transitions. [2021-11-19 13:35:04,538 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:04,538 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 291 transitions. [2021-11-19 13:35:04,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-19 13:35:04,539 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:35:04,539 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:35:04,540 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-19 13:35:04,540 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-19 13:35:04,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:35:04,541 INFO L85 PathProgramCache]: Analyzing trace with hash 1413074335, now seen corresponding path program 1 times [2021-11-19 13:35:04,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:35:04,541 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059979004] [2021-11-19 13:35:04,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:35:04,542 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:35:04,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:35:04,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:35:04,696 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:35:04,697 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059979004] [2021-11-19 13:35:04,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059979004] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:35:04,697 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:35:04,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 13:35:04,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513787318] [2021-11-19 13:35:04,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:35:04,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 13:35:04,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:35:04,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 13:35:04,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:35:04,699 INFO L87 Difference]: Start difference. First operand 243 states and 291 transitions. Second operand has 8 states, 8 states have (on average 7.875) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:05,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:35:05,306 INFO L93 Difference]: Finished difference Result 440 states and 527 transitions. [2021-11-19 13:35:05,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 13:35:05,307 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-19 13:35:05,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:35:05,310 INFO L225 Difference]: With dead ends: 440 [2021-11-19 13:35:05,310 INFO L226 Difference]: Without dead ends: 434 [2021-11-19 13:35:05,310 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-19 13:35:05,311 INFO L933 BasicCegarLoop]: 207 mSDtfsCounter, 859 mSDsluCounter, 626 mSDsCounter, 0 mSdLazyCounter, 621 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 859 SdHoareTripleChecker+Valid, 824 SdHoareTripleChecker+Invalid, 659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 621 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 13:35:05,311 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [859 Valid, 824 Invalid, 659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 621 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 13:35:05,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2021-11-19 13:35:05,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 243. [2021-11-19 13:35:05,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 232 states have (on average 1.25) internal successors, (290), 242 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:05,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 290 transitions. [2021-11-19 13:35:05,336 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 290 transitions. Word has length 63 [2021-11-19 13:35:05,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:35:05,337 INFO L470 AbstractCegarLoop]: Abstraction has 243 states and 290 transitions. [2021-11-19 13:35:05,337 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:05,337 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 290 transitions. [2021-11-19 13:35:05,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-19 13:35:05,338 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:35:05,338 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:35:05,338 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-19 13:35:05,339 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-19 13:35:05,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:35:05,339 INFO L85 PathProgramCache]: Analyzing trace with hash -1960661089, now seen corresponding path program 1 times [2021-11-19 13:35:05,340 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:35:05,340 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118635753] [2021-11-19 13:35:05,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:35:05,340 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:35:05,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:35:05,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:35:05,447 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:35:05,447 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118635753] [2021-11-19 13:35:05,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118635753] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:35:05,448 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:35:05,448 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-19 13:35:05,448 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421466481] [2021-11-19 13:35:05,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:35:05,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 13:35:05,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:35:05,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 13:35:05,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-19 13:35:05,450 INFO L87 Difference]: Start difference. First operand 243 states and 290 transitions. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:05,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:35:05,861 INFO L93 Difference]: Finished difference Result 464 states and 544 transitions. [2021-11-19 13:35:05,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 13:35:05,861 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-19 13:35:05,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:35:05,863 INFO L225 Difference]: With dead ends: 464 [2021-11-19 13:35:05,863 INFO L226 Difference]: Without dead ends: 340 [2021-11-19 13:35:05,864 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-11-19 13:35:05,865 INFO L933 BasicCegarLoop]: 163 mSDtfsCounter, 1115 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1115 SdHoareTripleChecker+Valid, 576 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 13:35:05,865 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1115 Valid, 576 Invalid, 421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 406 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 13:35:05,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2021-11-19 13:35:05,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 243. [2021-11-19 13:35:05,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 232 states have (on average 1.2456896551724137) internal successors, (289), 242 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:05,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 289 transitions. [2021-11-19 13:35:05,891 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 289 transitions. Word has length 63 [2021-11-19 13:35:05,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:35:05,891 INFO L470 AbstractCegarLoop]: Abstraction has 243 states and 289 transitions. [2021-11-19 13:35:05,891 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:05,892 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 289 transitions. [2021-11-19 13:35:05,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-19 13:35:05,893 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:35:05,893 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:35:05,893 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-19 13:35:05,893 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-19 13:35:05,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:35:05,894 INFO L85 PathProgramCache]: Analyzing trace with hash 718759200, now seen corresponding path program 1 times [2021-11-19 13:35:05,894 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:35:05,894 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271849899] [2021-11-19 13:35:05,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:35:05,895 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:35:05,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:35:05,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:35:05,995 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:35:05,995 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271849899] [2021-11-19 13:35:05,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271849899] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:35:05,995 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:35:05,996 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 13:35:05,996 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918615187] [2021-11-19 13:35:05,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:35:05,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 13:35:05,997 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:35:05,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 13:35:05,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:35:05,998 INFO L87 Difference]: Start difference. First operand 243 states and 289 transitions. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:06,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:35:06,623 INFO L93 Difference]: Finished difference Result 474 states and 570 transitions. [2021-11-19 13:35:06,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 13:35:06,623 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-19 13:35:06,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:35:06,626 INFO L225 Difference]: With dead ends: 474 [2021-11-19 13:35:06,626 INFO L226 Difference]: Without dead ends: 434 [2021-11-19 13:35:06,627 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-19 13:35:06,627 INFO L933 BasicCegarLoop]: 191 mSDtfsCounter, 1202 mSDsluCounter, 620 mSDsCounter, 0 mSdLazyCounter, 621 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1202 SdHoareTripleChecker+Valid, 805 SdHoareTripleChecker+Invalid, 677 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 621 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 13:35:06,628 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1202 Valid, 805 Invalid, 677 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 621 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 13:35:06,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2021-11-19 13:35:06,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 243. [2021-11-19 13:35:06,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 232 states have (on average 1.2413793103448276) internal successors, (288), 242 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:06,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 288 transitions. [2021-11-19 13:35:06,657 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 288 transitions. Word has length 64 [2021-11-19 13:35:06,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:35:06,657 INFO L470 AbstractCegarLoop]: Abstraction has 243 states and 288 transitions. [2021-11-19 13:35:06,657 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:06,658 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 288 transitions. [2021-11-19 13:35:06,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-19 13:35:06,664 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:35:06,664 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:35:06,664 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-19 13:35:06,665 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-19 13:35:06,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:35:06,665 INFO L85 PathProgramCache]: Analyzing trace with hash 478712064, now seen corresponding path program 1 times [2021-11-19 13:35:06,665 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:35:06,666 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614609269] [2021-11-19 13:35:06,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:35:06,666 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:35:06,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:35:06,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:35:06,831 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:35:06,831 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614609269] [2021-11-19 13:35:06,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614609269] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:35:06,831 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:35:06,831 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 13:35:06,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264004587] [2021-11-19 13:35:06,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:35:06,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 13:35:06,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:35:06,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 13:35:06,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:35:06,834 INFO L87 Difference]: Start difference. First operand 243 states and 288 transitions. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:07,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:35:07,557 INFO L93 Difference]: Finished difference Result 493 states and 598 transitions. [2021-11-19 13:35:07,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 13:35:07,558 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-19 13:35:07,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:35:07,561 INFO L225 Difference]: With dead ends: 493 [2021-11-19 13:35:07,561 INFO L226 Difference]: Without dead ends: 442 [2021-11-19 13:35:07,562 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-19 13:35:07,564 INFO L933 BasicCegarLoop]: 231 mSDtfsCounter, 1138 mSDsluCounter, 737 mSDsCounter, 0 mSdLazyCounter, 714 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1138 SdHoareTripleChecker+Valid, 962 SdHoareTripleChecker+Invalid, 746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-19 13:35:07,564 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1138 Valid, 962 Invalid, 746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 714 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-19 13:35:07,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2021-11-19 13:35:07,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 243. [2021-11-19 13:35:07,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 232 states have (on average 1.2370689655172413) internal successors, (287), 242 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:07,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 287 transitions. [2021-11-19 13:35:07,593 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 287 transitions. Word has length 64 [2021-11-19 13:35:07,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:35:07,594 INFO L470 AbstractCegarLoop]: Abstraction has 243 states and 287 transitions. [2021-11-19 13:35:07,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:07,594 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 287 transitions. [2021-11-19 13:35:07,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-19 13:35:07,595 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:35:07,595 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:35:07,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-19 13:35:07,596 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-19 13:35:07,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:35:07,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1193853636, now seen corresponding path program 1 times [2021-11-19 13:35:07,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:35:07,597 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871550218] [2021-11-19 13:35:07,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:35:07,597 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:35:07,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:35:07,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:35:07,735 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:35:07,735 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871550218] [2021-11-19 13:35:07,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871550218] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:35:07,735 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:35:07,735 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 13:35:07,735 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71770280] [2021-11-19 13:35:07,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:35:07,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 13:35:07,736 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:35:07,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 13:35:07,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:35:07,737 INFO L87 Difference]: Start difference. First operand 243 states and 287 transitions. Second operand has 8 states, 8 states have (on average 8.125) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:08,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:35:08,402 INFO L93 Difference]: Finished difference Result 461 states and 554 transitions. [2021-11-19 13:35:08,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 13:35:08,402 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-19 13:35:08,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:35:08,407 INFO L225 Difference]: With dead ends: 461 [2021-11-19 13:35:08,407 INFO L226 Difference]: Without dead ends: 442 [2021-11-19 13:35:08,407 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-11-19 13:35:08,408 INFO L933 BasicCegarLoop]: 267 mSDtfsCounter, 701 mSDsluCounter, 876 mSDsCounter, 0 mSdLazyCounter, 767 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 701 SdHoareTripleChecker+Valid, 1132 SdHoareTripleChecker+Invalid, 785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-19 13:35:08,408 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [701 Valid, 1132 Invalid, 785 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 767 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-19 13:35:08,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2021-11-19 13:35:08,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 243. [2021-11-19 13:35:08,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 232 states have (on average 1.2327586206896552) internal successors, (286), 242 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:08,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 286 transitions. [2021-11-19 13:35:08,434 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 286 transitions. Word has length 65 [2021-11-19 13:35:08,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:35:08,434 INFO L470 AbstractCegarLoop]: Abstraction has 243 states and 286 transitions. [2021-11-19 13:35:08,434 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:08,435 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 286 transitions. [2021-11-19 13:35:08,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-19 13:35:08,436 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:35:08,436 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:35:08,436 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-19 13:35:08,436 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-19 13:35:08,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:35:08,437 INFO L85 PathProgramCache]: Analyzing trace with hash -1508275324, now seen corresponding path program 1 times [2021-11-19 13:35:08,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:35:08,437 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688499595] [2021-11-19 13:35:08,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:35:08,438 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:35:08,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:35:08,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:35:08,533 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:35:08,534 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688499595] [2021-11-19 13:35:08,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688499595] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:35:08,534 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:35:08,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 13:35:08,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260203557] [2021-11-19 13:35:08,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:35:08,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 13:35:08,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:35:08,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 13:35:08,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:35:08,536 INFO L87 Difference]: Start difference. First operand 243 states and 286 transitions. Second operand has 8 states, 8 states have (on average 8.125) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:09,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:35:09,219 INFO L93 Difference]: Finished difference Result 440 states and 521 transitions. [2021-11-19 13:35:09,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 13:35:09,220 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-19 13:35:09,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:35:09,227 INFO L225 Difference]: With dead ends: 440 [2021-11-19 13:35:09,227 INFO L226 Difference]: Without dead ends: 434 [2021-11-19 13:35:09,227 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-19 13:35:09,228 INFO L933 BasicCegarLoop]: 227 mSDtfsCounter, 1116 mSDsluCounter, 706 mSDsCounter, 0 mSdLazyCounter, 658 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1116 SdHoareTripleChecker+Valid, 924 SdHoareTripleChecker+Invalid, 710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 13:35:09,229 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1116 Valid, 924 Invalid, 710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 658 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 13:35:09,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2021-11-19 13:35:09,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 243. [2021-11-19 13:35:09,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 232 states have (on average 1.228448275862069) internal successors, (285), 242 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:09,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 285 transitions. [2021-11-19 13:35:09,257 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 285 transitions. Word has length 65 [2021-11-19 13:35:09,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:35:09,258 INFO L470 AbstractCegarLoop]: Abstraction has 243 states and 285 transitions. [2021-11-19 13:35:09,258 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:09,258 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 285 transitions. [2021-11-19 13:35:09,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-19 13:35:09,259 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:35:09,259 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:35:09,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-19 13:35:09,260 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-19 13:35:09,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:35:09,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1207057476, now seen corresponding path program 1 times [2021-11-19 13:35:09,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:35:09,260 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892859172] [2021-11-19 13:35:09,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:35:09,261 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:35:09,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:35:09,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:35:09,372 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:35:09,372 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892859172] [2021-11-19 13:35:09,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892859172] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:35:09,373 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:35:09,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 13:35:09,373 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54155078] [2021-11-19 13:35:09,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:35:09,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 13:35:09,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:35:09,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 13:35:09,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:35:09,375 INFO L87 Difference]: Start difference. First operand 243 states and 285 transitions. Second operand has 8 states, 8 states have (on average 8.125) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:10,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:35:10,060 INFO L93 Difference]: Finished difference Result 527 states and 634 transitions. [2021-11-19 13:35:10,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 13:35:10,060 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-19 13:35:10,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:35:10,063 INFO L225 Difference]: With dead ends: 527 [2021-11-19 13:35:10,063 INFO L226 Difference]: Without dead ends: 446 [2021-11-19 13:35:10,064 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-19 13:35:10,065 INFO L933 BasicCegarLoop]: 298 mSDtfsCounter, 1072 mSDsluCounter, 782 mSDsCounter, 0 mSdLazyCounter, 782 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1072 SdHoareTripleChecker+Valid, 1071 SdHoareTripleChecker+Invalid, 802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 782 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-19 13:35:10,065 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1072 Valid, 1071 Invalid, 802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 782 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-19 13:35:10,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2021-11-19 13:35:10,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 243. [2021-11-19 13:35:10,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 232 states have (on average 1.2241379310344827) internal successors, (284), 242 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:10,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 284 transitions. [2021-11-19 13:35:10,095 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 284 transitions. Word has length 65 [2021-11-19 13:35:10,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:35:10,095 INFO L470 AbstractCegarLoop]: Abstraction has 243 states and 284 transitions. [2021-11-19 13:35:10,096 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:10,096 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 284 transitions. [2021-11-19 13:35:10,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-19 13:35:10,097 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:35:10,097 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:35:10,097 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-19 13:35:10,098 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-19 13:35:10,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:35:10,098 INFO L85 PathProgramCache]: Analyzing trace with hash 1230734052, now seen corresponding path program 1 times [2021-11-19 13:35:10,099 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:35:10,099 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852131824] [2021-11-19 13:35:10,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:35:10,099 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:35:10,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:35:10,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:35:10,220 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:35:10,220 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852131824] [2021-11-19 13:35:10,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852131824] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:35:10,220 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:35:10,221 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 13:35:10,221 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951656430] [2021-11-19 13:35:10,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:35:10,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 13:35:10,221 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:35:10,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 13:35:10,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:35:10,222 INFO L87 Difference]: Start difference. First operand 243 states and 284 transitions. Second operand has 8 states, 8 states have (on average 8.125) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:10,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:35:10,862 INFO L93 Difference]: Finished difference Result 477 states and 568 transitions. [2021-11-19 13:35:10,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 13:35:10,863 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-19 13:35:10,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:35:10,869 INFO L225 Difference]: With dead ends: 477 [2021-11-19 13:35:10,869 INFO L226 Difference]: Without dead ends: 434 [2021-11-19 13:35:10,871 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-19 13:35:10,872 INFO L933 BasicCegarLoop]: 231 mSDtfsCounter, 1098 mSDsluCounter, 713 mSDsCounter, 0 mSdLazyCounter, 651 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1098 SdHoareTripleChecker+Valid, 935 SdHoareTripleChecker+Invalid, 703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 13:35:10,873 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1098 Valid, 935 Invalid, 703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 651 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 13:35:10,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2021-11-19 13:35:10,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 243. [2021-11-19 13:35:10,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 232 states have (on average 1.2198275862068966) internal successors, (283), 242 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:10,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 283 transitions. [2021-11-19 13:35:10,924 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 283 transitions. Word has length 65 [2021-11-19 13:35:10,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:35:10,924 INFO L470 AbstractCegarLoop]: Abstraction has 243 states and 283 transitions. [2021-11-19 13:35:10,925 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:10,925 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 283 transitions. [2021-11-19 13:35:10,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-19 13:35:10,926 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:35:10,926 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:35:10,926 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-19 13:35:10,927 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-19 13:35:10,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:35:10,928 INFO L85 PathProgramCache]: Analyzing trace with hash -873801820, now seen corresponding path program 1 times [2021-11-19 13:35:10,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:35:10,928 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569298547] [2021-11-19 13:35:10,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:35:10,929 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:35:10,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:35:11,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:35:11,025 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:35:11,025 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569298547] [2021-11-19 13:35:11,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569298547] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:35:11,026 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:35:11,026 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 13:35:11,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319648219] [2021-11-19 13:35:11,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:35:11,027 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 13:35:11,027 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:35:11,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 13:35:11,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:35:11,028 INFO L87 Difference]: Start difference. First operand 243 states and 283 transitions. Second operand has 8 states, 8 states have (on average 8.125) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:11,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:35:11,620 INFO L93 Difference]: Finished difference Result 498 states and 598 transitions. [2021-11-19 13:35:11,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 13:35:11,620 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-19 13:35:11,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:35:11,623 INFO L225 Difference]: With dead ends: 498 [2021-11-19 13:35:11,623 INFO L226 Difference]: Without dead ends: 442 [2021-11-19 13:35:11,624 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-19 13:35:11,624 INFO L933 BasicCegarLoop]: 291 mSDtfsCounter, 1035 mSDsluCounter, 831 mSDsCounter, 0 mSdLazyCounter, 775 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1035 SdHoareTripleChecker+Valid, 1113 SdHoareTripleChecker+Invalid, 804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 775 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 13:35:11,625 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1035 Valid, 1113 Invalid, 804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 775 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 13:35:11,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2021-11-19 13:35:11,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 243. [2021-11-19 13:35:11,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 232 states have (on average 1.2155172413793103) internal successors, (282), 242 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:11,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 282 transitions. [2021-11-19 13:35:11,658 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 282 transitions. Word has length 65 [2021-11-19 13:35:11,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:35:11,658 INFO L470 AbstractCegarLoop]: Abstraction has 243 states and 282 transitions. [2021-11-19 13:35:11,659 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:11,659 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 282 transitions. [2021-11-19 13:35:11,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-19 13:35:11,660 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:35:11,660 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:35:11,660 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-19 13:35:11,661 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-19 13:35:11,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:35:11,661 INFO L85 PathProgramCache]: Analyzing trace with hash 106808155, now seen corresponding path program 1 times [2021-11-19 13:35:11,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:35:11,661 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292008131] [2021-11-19 13:35:11,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:35:11,662 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:35:11,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:35:12,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:35:12,673 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:35:12,673 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292008131] [2021-11-19 13:35:12,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292008131] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:35:12,674 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:35:12,674 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2021-11-19 13:35:12,674 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134537013] [2021-11-19 13:35:12,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:35:12,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-19 13:35:12,675 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:35:12,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-19 13:35:12,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2021-11-19 13:35:12,676 INFO L87 Difference]: Start difference. First operand 243 states and 282 transitions. Second operand has 25 states, 25 states have (on average 2.64) internal successors, (66), 24 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:16,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:35:16,196 INFO L93 Difference]: Finished difference Result 751 states and 871 transitions. [2021-11-19 13:35:16,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-19 13:35:16,196 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.64) internal successors, (66), 24 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-11-19 13:35:16,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:35:16,200 INFO L225 Difference]: With dead ends: 751 [2021-11-19 13:35:16,201 INFO L226 Difference]: Without dead ends: 713 [2021-11-19 13:35:16,202 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=345, Invalid=1817, Unknown=0, NotChecked=0, Total=2162 [2021-11-19 13:35:16,203 INFO L933 BasicCegarLoop]: 523 mSDtfsCounter, 2487 mSDsluCounter, 5645 mSDsCounter, 0 mSdLazyCounter, 2892 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2487 SdHoareTripleChecker+Valid, 6139 SdHoareTripleChecker+Invalid, 2974 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 2892 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:35:16,203 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2487 Valid, 6139 Invalid, 2974 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 2892 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-11-19 13:35:16,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2021-11-19 13:35:16,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 258. [2021-11-19 13:35:16,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 247 states have (on average 1.222672064777328) internal successors, (302), 257 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:16,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 302 transitions. [2021-11-19 13:35:16,250 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 302 transitions. Word has length 66 [2021-11-19 13:35:16,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:35:16,251 INFO L470 AbstractCegarLoop]: Abstraction has 258 states and 302 transitions. [2021-11-19 13:35:16,251 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.64) internal successors, (66), 24 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:16,251 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 302 transitions. [2021-11-19 13:35:16,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-19 13:35:16,252 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:35:16,253 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:35:16,253 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-19 13:35:16,253 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-19 13:35:16,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:35:16,254 INFO L85 PathProgramCache]: Analyzing trace with hash -543233893, now seen corresponding path program 1 times [2021-11-19 13:35:16,254 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:35:16,254 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545109110] [2021-11-19 13:35:16,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:35:16,255 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:35:16,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:35:17,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:35:17,153 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:35:17,154 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545109110] [2021-11-19 13:35:17,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545109110] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:35:17,154 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:35:17,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2021-11-19 13:35:17,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996590031] [2021-11-19 13:35:17,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:35:17,155 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-19 13:35:17,155 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:35:17,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-19 13:35:17,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2021-11-19 13:35:17,156 INFO L87 Difference]: Start difference. First operand 258 states and 302 transitions. Second operand has 25 states, 25 states have (on average 2.64) internal successors, (66), 24 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:21,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:35:21,016 INFO L93 Difference]: Finished difference Result 894 states and 1058 transitions. [2021-11-19 13:35:21,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-19 13:35:21,017 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.64) internal successors, (66), 24 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-11-19 13:35:21,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:35:21,021 INFO L225 Difference]: With dead ends: 894 [2021-11-19 13:35:21,022 INFO L226 Difference]: Without dead ends: 856 [2021-11-19 13:35:21,023 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=382, Invalid=1874, Unknown=0, NotChecked=0, Total=2256 [2021-11-19 13:35:21,024 INFO L933 BasicCegarLoop]: 694 mSDtfsCounter, 2632 mSDsluCounter, 7450 mSDsCounter, 0 mSdLazyCounter, 3229 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2632 SdHoareTripleChecker+Valid, 8051 SdHoareTripleChecker+Invalid, 3359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 3229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-19 13:35:21,024 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2632 Valid, 8051 Invalid, 3359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 3229 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-11-19 13:35:21,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 856 states. [2021-11-19 13:35:21,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 856 to 269. [2021-11-19 13:35:21,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 258 states have (on average 1.2248062015503876) internal successors, (316), 268 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:21,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 316 transitions. [2021-11-19 13:35:21,076 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 316 transitions. Word has length 66 [2021-11-19 13:35:21,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:35:21,076 INFO L470 AbstractCegarLoop]: Abstraction has 269 states and 316 transitions. [2021-11-19 13:35:21,076 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.64) internal successors, (66), 24 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:21,076 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 316 transitions. [2021-11-19 13:35:21,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-19 13:35:21,078 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:35:21,078 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:35:21,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-19 13:35:21,078 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-19 13:35:21,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:35:21,079 INFO L85 PathProgramCache]: Analyzing trace with hash -89752069, now seen corresponding path program 1 times [2021-11-19 13:35:21,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:35:21,079 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186408159] [2021-11-19 13:35:21,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:35:21,080 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:35:21,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:35:21,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:35:21,377 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:35:21,377 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186408159] [2021-11-19 13:35:21,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186408159] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:35:21,377 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:35:21,377 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-19 13:35:21,378 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529263789] [2021-11-19 13:35:21,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:35:21,378 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-19 13:35:21,378 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:35:21,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-19 13:35:21,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-19 13:35:21,379 INFO L87 Difference]: Start difference. First operand 269 states and 316 transitions. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:22,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:35:22,220 INFO L93 Difference]: Finished difference Result 555 states and 647 transitions. [2021-11-19 13:35:22,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-19 13:35:22,220 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-11-19 13:35:22,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:35:22,223 INFO L225 Difference]: With dead ends: 555 [2021-11-19 13:35:22,223 INFO L226 Difference]: Without dead ends: 437 [2021-11-19 13:35:22,224 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=108, Invalid=234, Unknown=0, NotChecked=0, Total=342 [2021-11-19 13:35:22,225 INFO L933 BasicCegarLoop]: 315 mSDtfsCounter, 1466 mSDsluCounter, 646 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1466 SdHoareTripleChecker+Valid, 943 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:35:22,225 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1466 Valid, 943 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 13:35:22,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2021-11-19 13:35:22,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 188. [2021-11-19 13:35:22,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 181 states have (on average 1.2044198895027625) internal successors, (218), 187 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:22,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 218 transitions. [2021-11-19 13:35:22,274 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 218 transitions. Word has length 66 [2021-11-19 13:35:22,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:35:22,277 INFO L470 AbstractCegarLoop]: Abstraction has 188 states and 218 transitions. [2021-11-19 13:35:22,277 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:22,277 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 218 transitions. [2021-11-19 13:35:22,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-19 13:35:22,278 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:35:22,278 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:35:22,278 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-19 13:35:22,279 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-19 13:35:22,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:35:22,279 INFO L85 PathProgramCache]: Analyzing trace with hash 1410161897, now seen corresponding path program 1 times [2021-11-19 13:35:22,280 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:35:22,280 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819045939] [2021-11-19 13:35:22,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:35:22,280 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:35:22,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:35:22,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:35:22,710 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:35:22,710 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819045939] [2021-11-19 13:35:22,710 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819045939] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:35:22,710 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:35:22,710 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-19 13:35:22,710 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779589653] [2021-11-19 13:35:22,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:35:22,711 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-19 13:35:22,711 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:35:22,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-19 13:35:22,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-19 13:35:22,712 INFO L87 Difference]: Start difference. First operand 188 states and 218 transitions. Second operand has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 12 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:23,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:35:23,910 INFO L93 Difference]: Finished difference Result 435 states and 507 transitions. [2021-11-19 13:35:23,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 13:35:23,911 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 12 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-19 13:35:23,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:35:23,914 INFO L225 Difference]: With dead ends: 435 [2021-11-19 13:35:23,914 INFO L226 Difference]: Without dead ends: 394 [2021-11-19 13:35:23,915 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=141, Invalid=411, Unknown=0, NotChecked=0, Total=552 [2021-11-19 13:35:23,917 INFO L933 BasicCegarLoop]: 207 mSDtfsCounter, 1051 mSDsluCounter, 1521 mSDsCounter, 0 mSdLazyCounter, 519 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1051 SdHoareTripleChecker+Valid, 1675 SdHoareTripleChecker+Invalid, 561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 13:35:23,918 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1051 Valid, 1675 Invalid, 561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 519 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 13:35:23,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2021-11-19 13:35:23,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 184. [2021-11-19 13:35:23,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 178 states have (on average 1.196629213483146) internal successors, (213), 183 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:23,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 213 transitions. [2021-11-19 13:35:23,964 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 213 transitions. Word has length 67 [2021-11-19 13:35:23,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:35:23,965 INFO L470 AbstractCegarLoop]: Abstraction has 184 states and 213 transitions. [2021-11-19 13:35:23,965 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 12 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:23,965 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 213 transitions. [2021-11-19 13:35:23,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-19 13:35:23,966 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:35:23,966 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:35:23,966 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-19 13:35:23,967 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-19 13:35:23,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:35:23,967 INFO L85 PathProgramCache]: Analyzing trace with hash 866774441, now seen corresponding path program 1 times [2021-11-19 13:35:23,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:35:23,968 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601287396] [2021-11-19 13:35:23,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:35:23,968 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:35:23,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:35:24,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:35:24,345 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:35:24,345 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601287396] [2021-11-19 13:35:24,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601287396] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:35:24,345 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:35:24,346 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-19 13:35:24,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016351125] [2021-11-19 13:35:24,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:35:24,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-19 13:35:24,347 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:35:24,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-19 13:35:24,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-19 13:35:24,348 INFO L87 Difference]: Start difference. First operand 184 states and 213 transitions. Second operand has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 12 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:25,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:35:25,366 INFO L93 Difference]: Finished difference Result 398 states and 458 transitions. [2021-11-19 13:35:25,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-19 13:35:25,367 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 12 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-19 13:35:25,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:35:25,369 INFO L225 Difference]: With dead ends: 398 [2021-11-19 13:35:25,369 INFO L226 Difference]: Without dead ends: 394 [2021-11-19 13:35:25,370 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=158, Invalid=492, Unknown=0, NotChecked=0, Total=650 [2021-11-19 13:35:25,370 INFO L933 BasicCegarLoop]: 206 mSDtfsCounter, 872 mSDsluCounter, 1489 mSDsCounter, 0 mSdLazyCounter, 504 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 872 SdHoareTripleChecker+Valid, 1641 SdHoareTripleChecker+Invalid, 541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 13:35:25,371 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [872 Valid, 1641 Invalid, 541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 504 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 13:35:25,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2021-11-19 13:35:25,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 180. [2021-11-19 13:35:25,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 175 states have (on average 1.1942857142857144) internal successors, (209), 179 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:25,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 209 transitions. [2021-11-19 13:35:25,421 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 209 transitions. Word has length 67 [2021-11-19 13:35:25,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:35:25,422 INFO L470 AbstractCegarLoop]: Abstraction has 180 states and 209 transitions. [2021-11-19 13:35:25,422 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 12 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:25,422 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 209 transitions. [2021-11-19 13:35:25,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-19 13:35:25,423 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:35:25,423 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:35:25,424 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-19 13:35:25,424 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-19 13:35:25,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:35:25,425 INFO L85 PathProgramCache]: Analyzing trace with hash 1780474025, now seen corresponding path program 1 times [2021-11-19 13:35:25,425 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:35:25,425 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982947915] [2021-11-19 13:35:25,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:35:25,425 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:35:25,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:35:26,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:35:26,023 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:35:26,023 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982947915] [2021-11-19 13:35:26,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982947915] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:35:26,024 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:35:26,024 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-11-19 13:35:26,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342185477] [2021-11-19 13:35:26,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:35:26,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-19 13:35:26,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:35:26,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-19 13:35:26,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=406, Unknown=0, NotChecked=0, Total=462 [2021-11-19 13:35:26,025 INFO L87 Difference]: Start difference. First operand 180 states and 209 transitions. Second operand has 22 states, 22 states have (on average 3.0454545454545454) internal successors, (67), 21 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:28,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:35:28,260 INFO L93 Difference]: Finished difference Result 518 states and 602 transitions. [2021-11-19 13:35:28,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-19 13:35:28,260 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.0454545454545454) internal successors, (67), 21 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-19 13:35:28,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:35:28,267 INFO L225 Difference]: With dead ends: 518 [2021-11-19 13:35:28,267 INFO L226 Difference]: Without dead ends: 511 [2021-11-19 13:35:28,268 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=229, Invalid=1177, Unknown=0, NotChecked=0, Total=1406 [2021-11-19 13:35:28,270 INFO L933 BasicCegarLoop]: 351 mSDtfsCounter, 1371 mSDsluCounter, 4131 mSDsCounter, 0 mSdLazyCounter, 1990 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1371 SdHoareTripleChecker+Valid, 4406 SdHoareTripleChecker+Invalid, 2047 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1990 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-19 13:35:28,271 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1371 Valid, 4406 Invalid, 2047 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1990 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-19 13:35:28,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511 states. [2021-11-19 13:35:28,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511 to 180. [2021-11-19 13:35:28,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 175 states have (on average 1.1885714285714286) internal successors, (208), 179 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:28,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 208 transitions. [2021-11-19 13:35:28,333 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 208 transitions. Word has length 67 [2021-11-19 13:35:28,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:35:28,334 INFO L470 AbstractCegarLoop]: Abstraction has 180 states and 208 transitions. [2021-11-19 13:35:28,334 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.0454545454545454) internal successors, (67), 21 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:28,334 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 208 transitions. [2021-11-19 13:35:28,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-19 13:35:28,335 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:35:28,335 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:35:28,335 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-19 13:35:28,336 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-19 13:35:28,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:35:28,336 INFO L85 PathProgramCache]: Analyzing trace with hash -588581152, now seen corresponding path program 1 times [2021-11-19 13:35:28,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:35:28,337 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134253699] [2021-11-19 13:35:28,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:35:28,337 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:35:28,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:35:28,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:35:28,615 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:35:28,615 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134253699] [2021-11-19 13:35:28,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134253699] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:35:28,615 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:35:28,615 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-19 13:35:28,615 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018568869] [2021-11-19 13:35:28,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:35:28,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-19 13:35:28,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:35:28,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-19 13:35:28,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-11-19 13:35:28,617 INFO L87 Difference]: Start difference. First operand 180 states and 208 transitions. Second operand has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 11 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:29,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:35:29,420 INFO L93 Difference]: Finished difference Result 451 states and 541 transitions. [2021-11-19 13:35:29,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 13:35:29,421 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 11 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-19 13:35:29,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:35:29,423 INFO L225 Difference]: With dead ends: 451 [2021-11-19 13:35:29,423 INFO L226 Difference]: Without dead ends: 374 [2021-11-19 13:35:29,424 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=117, Invalid=345, Unknown=0, NotChecked=0, Total=462 [2021-11-19 13:35:29,425 INFO L933 BasicCegarLoop]: 395 mSDtfsCounter, 761 mSDsluCounter, 1727 mSDsCounter, 0 mSdLazyCounter, 344 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 761 SdHoareTripleChecker+Valid, 2068 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 13:35:29,425 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [761 Valid, 2068 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 344 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 13:35:29,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2021-11-19 13:35:29,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 133. [2021-11-19 13:35:29,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 130 states have (on average 1.1692307692307693) internal successors, (152), 132 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:29,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 152 transitions. [2021-11-19 13:35:29,478 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 152 transitions. Word has length 67 [2021-11-19 13:35:29,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:35:29,478 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 152 transitions. [2021-11-19 13:35:29,479 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 11 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:29,479 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 152 transitions. [2021-11-19 13:35:29,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-19 13:35:29,480 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:35:29,480 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:35:29,480 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-19 13:35:29,483 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-19 13:35:29,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:35:29,484 INFO L85 PathProgramCache]: Analyzing trace with hash -2145891223, now seen corresponding path program 1 times [2021-11-19 13:35:29,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:35:29,484 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845854441] [2021-11-19 13:35:29,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:35:29,485 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:35:29,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:35:29,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:35:29,600 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:35:29,600 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845854441] [2021-11-19 13:35:29,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845854441] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:35:29,600 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:35:29,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 13:35:29,601 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737177705] [2021-11-19 13:35:29,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:35:29,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 13:35:29,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:35:29,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 13:35:29,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:35:29,602 INFO L87 Difference]: Start difference. First operand 133 states and 152 transitions. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 7 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:29,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:35:29,996 INFO L93 Difference]: Finished difference Result 201 states and 232 transitions. [2021-11-19 13:35:29,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-19 13:35:29,997 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 7 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-11-19 13:35:29,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:35:29,998 INFO L225 Difference]: With dead ends: 201 [2021-11-19 13:35:29,998 INFO L226 Difference]: Without dead ends: 193 [2021-11-19 13:35:29,999 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-11-19 13:35:30,000 INFO L933 BasicCegarLoop]: 104 mSDtfsCounter, 364 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 364 SdHoareTripleChecker+Valid, 414 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:35:30,001 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [364 Valid, 414 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 13:35:30,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2021-11-19 13:35:30,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 133. [2021-11-19 13:35:30,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 130 states have (on average 1.1615384615384616) internal successors, (151), 132 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:30,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 151 transitions. [2021-11-19 13:35:30,038 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 151 transitions. Word has length 69 [2021-11-19 13:35:30,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:35:30,039 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 151 transitions. [2021-11-19 13:35:30,039 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 7 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:30,039 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 151 transitions. [2021-11-19 13:35:30,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-19 13:35:30,040 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:35:30,040 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:35:30,040 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-19 13:35:30,041 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-19 13:35:30,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:35:30,041 INFO L85 PathProgramCache]: Analyzing trace with hash -535879959, now seen corresponding path program 1 times [2021-11-19 13:35:30,041 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:35:30,042 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901305858] [2021-11-19 13:35:30,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:35:30,042 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:35:30,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:35:30,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:35:30,145 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:35:30,145 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901305858] [2021-11-19 13:35:30,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901305858] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:35:30,145 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:35:30,145 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 13:35:30,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635806619] [2021-11-19 13:35:30,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:35:30,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 13:35:30,147 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:35:30,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 13:35:30,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:35:30,148 INFO L87 Difference]: Start difference. First operand 133 states and 151 transitions. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 7 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:30,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:35:30,530 INFO L93 Difference]: Finished difference Result 270 states and 317 transitions. [2021-11-19 13:35:30,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-19 13:35:30,530 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 7 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-11-19 13:35:30,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:35:30,531 INFO L225 Difference]: With dead ends: 270 [2021-11-19 13:35:30,531 INFO L226 Difference]: Without dead ends: 213 [2021-11-19 13:35:30,532 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2021-11-19 13:35:30,532 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 395 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 352 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 395 SdHoareTripleChecker+Valid, 472 SdHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:35:30,533 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [395 Valid, 472 Invalid, 361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 352 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 13:35:30,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2021-11-19 13:35:30,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 133. [2021-11-19 13:35:30,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 130 states have (on average 1.1538461538461537) internal successors, (150), 132 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:30,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 150 transitions. [2021-11-19 13:35:30,580 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 150 transitions. Word has length 69 [2021-11-19 13:35:30,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:35:30,580 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 150 transitions. [2021-11-19 13:35:30,580 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 7 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:30,580 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 150 transitions. [2021-11-19 13:35:30,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-19 13:35:30,581 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:35:30,581 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:35:30,582 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-19 13:35:30,582 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-19 13:35:30,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:35:30,582 INFO L85 PathProgramCache]: Analyzing trace with hash 134483598, now seen corresponding path program 1 times [2021-11-19 13:35:30,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:35:30,583 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222596346] [2021-11-19 13:35:30,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:35:30,583 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:35:30,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:35:30,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:35:30,916 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:35:30,916 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222596346] [2021-11-19 13:35:30,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222596346] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:35:30,916 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:35:30,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-19 13:35:30,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613292681] [2021-11-19 13:35:30,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:35:30,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-19 13:35:30,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:35:30,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-19 13:35:30,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-19 13:35:30,918 INFO L87 Difference]: Start difference. First operand 133 states and 150 transitions. Second operand has 13 states, 13 states have (on average 5.461538461538462) internal successors, (71), 12 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:32,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:35:32,086 INFO L93 Difference]: Finished difference Result 446 states and 542 transitions. [2021-11-19 13:35:32,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-19 13:35:32,087 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.461538461538462) internal successors, (71), 12 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-11-19 13:35:32,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:35:32,089 INFO L225 Difference]: With dead ends: 446 [2021-11-19 13:35:32,089 INFO L226 Difference]: Without dead ends: 440 [2021-11-19 13:35:32,090 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=166, Invalid=536, Unknown=0, NotChecked=0, Total=702 [2021-11-19 13:35:32,090 INFO L933 BasicCegarLoop]: 319 mSDtfsCounter, 1011 mSDsluCounter, 1588 mSDsCounter, 0 mSdLazyCounter, 456 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1011 SdHoareTripleChecker+Valid, 1821 SdHoareTripleChecker+Invalid, 487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 13:35:32,091 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1011 Valid, 1821 Invalid, 487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 456 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 13:35:32,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2021-11-19 13:35:32,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 127. [2021-11-19 13:35:32,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 125 states have (on average 1.152) internal successors, (144), 126 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:32,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 144 transitions. [2021-11-19 13:35:32,137 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 144 transitions. Word has length 71 [2021-11-19 13:35:32,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:35:32,137 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 144 transitions. [2021-11-19 13:35:32,137 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.461538461538462) internal successors, (71), 12 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:32,137 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 144 transitions. [2021-11-19 13:35:32,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-19 13:35:32,138 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:35:32,138 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:35:32,138 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-19 13:35:32,138 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-19 13:35:32,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:35:32,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1292839346, now seen corresponding path program 1 times [2021-11-19 13:35:32,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:35:32,139 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180789102] [2021-11-19 13:35:32,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:35:32,140 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:35:32,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:35:32,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:35:32,706 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:35:32,706 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180789102] [2021-11-19 13:35:32,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180789102] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:35:32,706 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:35:32,706 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-11-19 13:35:32,707 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70577359] [2021-11-19 13:35:32,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:35:32,707 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-19 13:35:32,707 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:35:32,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-19 13:35:32,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=370, Unknown=0, NotChecked=0, Total=420 [2021-11-19 13:35:32,708 INFO L87 Difference]: Start difference. First operand 127 states and 144 transitions. Second operand has 21 states, 21 states have (on average 3.380952380952381) internal successors, (71), 21 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:34,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:35:34,521 INFO L93 Difference]: Finished difference Result 421 states and 493 transitions. [2021-11-19 13:35:34,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-19 13:35:34,522 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.380952380952381) internal successors, (71), 21 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-11-19 13:35:34,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:35:34,523 INFO L225 Difference]: With dead ends: 421 [2021-11-19 13:35:34,523 INFO L226 Difference]: Without dead ends: 412 [2021-11-19 13:35:34,524 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=223, Invalid=1109, Unknown=0, NotChecked=0, Total=1332 [2021-11-19 13:35:34,525 INFO L933 BasicCegarLoop]: 326 mSDtfsCounter, 1086 mSDsluCounter, 3783 mSDsCounter, 0 mSdLazyCounter, 1809 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1086 SdHoareTripleChecker+Valid, 4026 SdHoareTripleChecker+Invalid, 1856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1809 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:35:34,525 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1086 Valid, 4026 Invalid, 1856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1809 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-19 13:35:34,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2021-11-19 13:35:34,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 143. [2021-11-19 13:35:34,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 141 states have (on average 1.1560283687943262) internal successors, (163), 142 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:34,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 163 transitions. [2021-11-19 13:35:34,573 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 163 transitions. Word has length 71 [2021-11-19 13:35:34,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:35:34,574 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 163 transitions. [2021-11-19 13:35:34,574 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.380952380952381) internal successors, (71), 21 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:34,574 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 163 transitions. [2021-11-19 13:35:34,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-19 13:35:34,575 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:35:34,575 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:35:34,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-19 13:35:34,575 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-19 13:35:34,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:35:34,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1313186703, now seen corresponding path program 1 times [2021-11-19 13:35:34,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:35:34,576 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896808052] [2021-11-19 13:35:34,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:35:34,577 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:35:34,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:35:34,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:35:34,845 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:35:34,845 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896808052] [2021-11-19 13:35:34,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896808052] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:35:34,846 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:35:34,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-19 13:35:34,846 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849320781] [2021-11-19 13:35:34,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:35:34,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-19 13:35:34,846 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:35:34,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-19 13:35:34,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-19 13:35:34,847 INFO L87 Difference]: Start difference. First operand 143 states and 163 transitions. Second operand has 12 states, 12 states have (on average 6.0) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:35,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:35:35,501 INFO L93 Difference]: Finished difference Result 306 states and 367 transitions. [2021-11-19 13:35:35,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 13:35:35,502 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.0) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2021-11-19 13:35:35,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:35:35,503 INFO L225 Difference]: With dead ends: 306 [2021-11-19 13:35:35,503 INFO L226 Difference]: Without dead ends: 290 [2021-11-19 13:35:35,503 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2021-11-19 13:35:35,504 INFO L933 BasicCegarLoop]: 283 mSDtfsCounter, 616 mSDsluCounter, 1371 mSDsCounter, 0 mSdLazyCounter, 347 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 616 SdHoareTripleChecker+Valid, 1594 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:35:35,504 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [616 Valid, 1594 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 347 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 13:35:35,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2021-11-19 13:35:35,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 114. [2021-11-19 13:35:35,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 113 states have (on average 1.1504424778761062) internal successors, (130), 113 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:35,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 130 transitions. [2021-11-19 13:35:35,549 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 130 transitions. Word has length 72 [2021-11-19 13:35:35,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:35:35,550 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 130 transitions. [2021-11-19 13:35:35,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.0) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:35,550 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 130 transitions. [2021-11-19 13:35:35,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-19 13:35:35,550 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:35:35,550 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:35:35,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-19 13:35:35,551 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-19 13:35:35,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:35:35,551 INFO L85 PathProgramCache]: Analyzing trace with hash -606084081, now seen corresponding path program 1 times [2021-11-19 13:35:35,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:35:35,552 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014014414] [2021-11-19 13:35:35,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:35:35,552 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:35:35,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:35:35,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:35:35,600 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:35:35,600 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014014414] [2021-11-19 13:35:35,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014014414] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:35:35,600 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:35:35,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 13:35:35,601 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059044148] [2021-11-19 13:35:35,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:35:35,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 13:35:35,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:35:35,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 13:35:35,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:35:35,602 INFO L87 Difference]: Start difference. First operand 114 states and 130 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:35,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:35:35,716 INFO L93 Difference]: Finished difference Result 188 states and 226 transitions. [2021-11-19 13:35:35,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 13:35:35,716 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2021-11-19 13:35:35,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:35:35,717 INFO L225 Difference]: With dead ends: 188 [2021-11-19 13:35:35,717 INFO L226 Difference]: Without dead ends: 151 [2021-11-19 13:35:35,718 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:35:35,718 INFO L933 BasicCegarLoop]: 158 mSDtfsCounter, 53 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:35:35,718 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 243 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 13:35:35,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2021-11-19 13:35:35,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 145. [2021-11-19 13:35:35,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 1.1875) internal successors, (171), 144 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:35,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 171 transitions. [2021-11-19 13:35:35,770 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 171 transitions. Word has length 87 [2021-11-19 13:35:35,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:35:35,771 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 171 transitions. [2021-11-19 13:35:35,771 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:35,771 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 171 transitions. [2021-11-19 13:35:35,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-19 13:35:35,771 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:35:35,771 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:35:35,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-19 13:35:35,772 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-19 13:35:35,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:35:35,772 INFO L85 PathProgramCache]: Analyzing trace with hash -1933536821, now seen corresponding path program 1 times [2021-11-19 13:35:35,772 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:35:35,772 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656612454] [2021-11-19 13:35:35,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:35:35,772 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:35:35,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:35:35,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:35:35,828 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:35:35,828 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656612454] [2021-11-19 13:35:35,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656612454] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:35:35,828 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:35:35,828 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 13:35:35,829 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348624162] [2021-11-19 13:35:35,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:35:35,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 13:35:35,829 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:35:35,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 13:35:35,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:35:35,830 INFO L87 Difference]: Start difference. First operand 145 states and 171 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:35,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:35:35,981 INFO L93 Difference]: Finished difference Result 281 states and 349 transitions. [2021-11-19 13:35:35,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 13:35:35,982 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-11-19 13:35:35,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:35:35,983 INFO L225 Difference]: With dead ends: 281 [2021-11-19 13:35:35,983 INFO L226 Difference]: Without dead ends: 213 [2021-11-19 13:35:35,984 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:35:35,984 INFO L933 BasicCegarLoop]: 151 mSDtfsCounter, 46 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:35:35,985 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 244 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 13:35:35,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2021-11-19 13:35:36,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 203. [2021-11-19 13:35:36,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 202 states have (on average 1.2227722772277227) internal successors, (247), 202 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:36,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 247 transitions. [2021-11-19 13:35:36,086 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 247 transitions. Word has length 90 [2021-11-19 13:35:36,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:35:36,086 INFO L470 AbstractCegarLoop]: Abstraction has 203 states and 247 transitions. [2021-11-19 13:35:36,086 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:36,086 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 247 transitions. [2021-11-19 13:35:36,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-19 13:35:36,087 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:35:36,087 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:35:36,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-19 13:35:36,088 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-19 13:35:36,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:35:36,088 INFO L85 PathProgramCache]: Analyzing trace with hash 1453338523, now seen corresponding path program 1 times [2021-11-19 13:35:36,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:35:36,089 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379315855] [2021-11-19 13:35:36,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:35:36,089 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:35:36,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:35:36,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:35:36,139 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:35:36,139 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379315855] [2021-11-19 13:35:36,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379315855] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:35:36,140 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:35:36,140 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 13:35:36,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880592784] [2021-11-19 13:35:36,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:35:36,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 13:35:36,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:35:36,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 13:35:36,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:35:36,141 INFO L87 Difference]: Start difference. First operand 203 states and 247 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:36,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:35:36,397 INFO L93 Difference]: Finished difference Result 455 states and 577 transitions. [2021-11-19 13:35:36,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 13:35:36,398 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-11-19 13:35:36,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:35:36,399 INFO L225 Difference]: With dead ends: 455 [2021-11-19 13:35:36,399 INFO L226 Difference]: Without dead ends: 329 [2021-11-19 13:35:36,400 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:35:36,400 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 39 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:35:36,400 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 245 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 13:35:36,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2021-11-19 13:35:36,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 311. [2021-11-19 13:35:36,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 310 states have (on average 1.2483870967741935) internal successors, (387), 310 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:36,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 387 transitions. [2021-11-19 13:35:36,592 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 387 transitions. Word has length 93 [2021-11-19 13:35:36,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:35:36,592 INFO L470 AbstractCegarLoop]: Abstraction has 311 states and 387 transitions. [2021-11-19 13:35:36,592 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:36,592 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 387 transitions. [2021-11-19 13:35:36,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-19 13:35:36,593 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:35:36,593 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:35:36,593 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-19 13:35:36,593 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-19 13:35:36,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:35:36,594 INFO L85 PathProgramCache]: Analyzing trace with hash -1999538379, now seen corresponding path program 1 times [2021-11-19 13:35:36,594 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:35:36,594 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241322922] [2021-11-19 13:35:36,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:35:36,595 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:35:36,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:35:36,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:35:36,641 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:35:36,641 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241322922] [2021-11-19 13:35:36,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241322922] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:35:36,642 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:35:36,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 13:35:36,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592787276] [2021-11-19 13:35:36,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:35:36,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 13:35:36,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:35:36,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 13:35:36,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:35:36,644 INFO L87 Difference]: Start difference. First operand 311 states and 387 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:37,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:35:37,044 INFO L93 Difference]: Finished difference Result 779 states and 997 transitions. [2021-11-19 13:35:37,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 13:35:37,044 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-19 13:35:37,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:35:37,047 INFO L225 Difference]: With dead ends: 779 [2021-11-19 13:35:37,047 INFO L226 Difference]: Without dead ends: 545 [2021-11-19 13:35:37,047 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:35:37,048 INFO L933 BasicCegarLoop]: 137 mSDtfsCounter, 29 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:35:37,048 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 246 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 13:35:37,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2021-11-19 13:35:37,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 511. [2021-11-19 13:35:37,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 511 states, 510 states have (on average 1.2607843137254902) internal successors, (643), 510 states have internal predecessors, (643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:37,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 643 transitions. [2021-11-19 13:35:37,349 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 643 transitions. Word has length 96 [2021-11-19 13:35:37,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:35:37,349 INFO L470 AbstractCegarLoop]: Abstraction has 511 states and 643 transitions. [2021-11-19 13:35:37,350 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:37,350 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 643 transitions. [2021-11-19 13:35:37,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-19 13:35:37,351 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:35:37,351 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:35:37,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-19 13:35:37,351 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-19 13:35:37,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:35:37,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1002635342, now seen corresponding path program 1 times [2021-11-19 13:35:37,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:35:37,352 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960669538] [2021-11-19 13:35:37,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:35:37,353 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:35:37,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:35:37,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:35:37,426 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:35:37,426 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960669538] [2021-11-19 13:35:37,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960669538] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:35:37,426 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:35:37,427 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-19 13:35:37,427 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950896225] [2021-11-19 13:35:37,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:35:37,427 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 13:35:37,428 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:35:37,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 13:35:37,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-19 13:35:37,428 INFO L87 Difference]: Start difference. First operand 511 states and 643 transitions. Second operand has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:38,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:35:38,528 INFO L93 Difference]: Finished difference Result 1936 states and 2462 transitions. [2021-11-19 13:35:38,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 13:35:38,529 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2021-11-19 13:35:38,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:35:38,537 INFO L225 Difference]: With dead ends: 1936 [2021-11-19 13:35:38,537 INFO L226 Difference]: Without dead ends: 1502 [2021-11-19 13:35:38,538 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-11-19 13:35:38,539 INFO L933 BasicCegarLoop]: 117 mSDtfsCounter, 530 mSDsluCounter, 660 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 530 SdHoareTripleChecker+Valid, 767 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:35:38,539 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [530 Valid, 767 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:35:38,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1502 states. [2021-11-19 13:35:39,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1502 to 732. [2021-11-19 13:35:39,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 732 states, 731 states have (on average 1.2476060191518468) internal successors, (912), 731 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:39,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 732 states to 732 states and 912 transitions. [2021-11-19 13:35:39,057 INFO L78 Accepts]: Start accepts. Automaton has 732 states and 912 transitions. Word has length 99 [2021-11-19 13:35:39,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:35:39,057 INFO L470 AbstractCegarLoop]: Abstraction has 732 states and 912 transitions. [2021-11-19 13:35:39,058 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:39,058 INFO L276 IsEmpty]: Start isEmpty. Operand 732 states and 912 transitions. [2021-11-19 13:35:39,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-19 13:35:39,059 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:35:39,059 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:35:39,059 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-19 13:35:39,059 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-19 13:35:39,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:35:39,060 INFO L85 PathProgramCache]: Analyzing trace with hash 487787018, now seen corresponding path program 1 times [2021-11-19 13:35:39,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:35:39,060 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471287240] [2021-11-19 13:35:39,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:35:39,061 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:35:39,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:35:39,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:35:39,197 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:35:39,198 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471287240] [2021-11-19 13:35:39,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471287240] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:35:39,198 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:35:39,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-19 13:35:39,198 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972439756] [2021-11-19 13:35:39,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:35:39,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 13:35:39,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:35:39,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 13:35:39,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-19 13:35:39,200 INFO L87 Difference]: Start difference. First operand 732 states and 912 transitions. Second operand has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:39,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:35:39,775 INFO L93 Difference]: Finished difference Result 1389 states and 1743 transitions. [2021-11-19 13:35:39,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 13:35:39,776 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2021-11-19 13:35:39,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:35:39,778 INFO L225 Difference]: With dead ends: 1389 [2021-11-19 13:35:39,779 INFO L226 Difference]: Without dead ends: 734 [2021-11-19 13:35:39,779 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:35:39,780 INFO L933 BasicCegarLoop]: 115 mSDtfsCounter, 311 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:35:39,780 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [311 Valid, 256 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 13:35:39,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 734 states. [2021-11-19 13:35:40,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 734 to 732. [2021-11-19 13:35:40,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 732 states, 731 states have (on average 1.2462380300957592) internal successors, (911), 731 states have internal predecessors, (911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:40,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 732 states to 732 states and 911 transitions. [2021-11-19 13:35:40,264 INFO L78 Accepts]: Start accepts. Automaton has 732 states and 911 transitions. Word has length 101 [2021-11-19 13:35:40,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:35:40,265 INFO L470 AbstractCegarLoop]: Abstraction has 732 states and 911 transitions. [2021-11-19 13:35:40,265 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:40,265 INFO L276 IsEmpty]: Start isEmpty. Operand 732 states and 911 transitions. [2021-11-19 13:35:40,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-19 13:35:40,266 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:35:40,266 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:35:40,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-19 13:35:40,267 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-19 13:35:40,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:35:40,267 INFO L85 PathProgramCache]: Analyzing trace with hash -1847468716, now seen corresponding path program 1 times [2021-11-19 13:35:40,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:35:40,268 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886106883] [2021-11-19 13:35:40,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:35:40,268 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:35:40,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:35:40,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:35:40,316 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:35:40,316 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886106883] [2021-11-19 13:35:40,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886106883] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:35:40,317 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:35:40,317 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 13:35:40,317 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047858556] [2021-11-19 13:35:40,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:35:40,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 13:35:40,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:35:40,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 13:35:40,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:35:40,319 INFO L87 Difference]: Start difference. First operand 732 states and 911 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:41,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:35:41,284 INFO L93 Difference]: Finished difference Result 1661 states and 2085 transitions. [2021-11-19 13:35:41,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 13:35:41,285 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2021-11-19 13:35:41,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:35:41,289 INFO L225 Difference]: With dead ends: 1661 [2021-11-19 13:35:41,289 INFO L226 Difference]: Without dead ends: 1006 [2021-11-19 13:35:41,290 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:35:41,291 INFO L933 BasicCegarLoop]: 120 mSDtfsCounter, 64 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:35:41,291 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 192 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 13:35:41,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1006 states. [2021-11-19 13:35:42,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1006 to 1004. [2021-11-19 13:35:42,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1004 states, 1003 states have (on average 1.2422731804586242) internal successors, (1246), 1003 states have internal predecessors, (1246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:42,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1004 states to 1004 states and 1246 transitions. [2021-11-19 13:35:42,044 INFO L78 Accepts]: Start accepts. Automaton has 1004 states and 1246 transitions. Word has length 101 [2021-11-19 13:35:42,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:35:42,045 INFO L470 AbstractCegarLoop]: Abstraction has 1004 states and 1246 transitions. [2021-11-19 13:35:42,045 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:42,045 INFO L276 IsEmpty]: Start isEmpty. Operand 1004 states and 1246 transitions. [2021-11-19 13:35:42,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-19 13:35:42,046 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:35:42,046 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:35:42,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-19 13:35:42,046 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-19 13:35:42,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:35:42,047 INFO L85 PathProgramCache]: Analyzing trace with hash -478179870, now seen corresponding path program 1 times [2021-11-19 13:35:42,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:35:42,047 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210900385] [2021-11-19 13:35:42,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:35:42,048 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:35:42,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:35:42,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:35:42,136 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:35:42,136 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210900385] [2021-11-19 13:35:42,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210900385] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:35:42,137 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:35:42,137 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 13:35:42,137 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907865998] [2021-11-19 13:35:42,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:35:42,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 13:35:42,138 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:35:42,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 13:35:42,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-19 13:35:42,138 INFO L87 Difference]: Start difference. First operand 1004 states and 1246 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:43,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:35:43,226 INFO L93 Difference]: Finished difference Result 1353 states and 1669 transitions. [2021-11-19 13:35:43,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 13:35:43,227 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2021-11-19 13:35:43,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:35:43,232 INFO L225 Difference]: With dead ends: 1353 [2021-11-19 13:35:43,232 INFO L226 Difference]: Without dead ends: 1351 [2021-11-19 13:35:43,233 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-11-19 13:35:43,233 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 269 mSDsluCounter, 629 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 780 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:35:43,233 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [269 Valid, 780 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:35:43,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1351 states. [2021-11-19 13:35:43,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1351 to 1004. [2021-11-19 13:35:43,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1004 states, 1003 states have (on average 1.226321036889332) internal successors, (1230), 1003 states have internal predecessors, (1230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:43,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1004 states to 1004 states and 1230 transitions. [2021-11-19 13:35:43,958 INFO L78 Accepts]: Start accepts. Automaton has 1004 states and 1230 transitions. Word has length 102 [2021-11-19 13:35:43,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:35:43,959 INFO L470 AbstractCegarLoop]: Abstraction has 1004 states and 1230 transitions. [2021-11-19 13:35:43,959 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:43,959 INFO L276 IsEmpty]: Start isEmpty. Operand 1004 states and 1230 transitions. [2021-11-19 13:35:43,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-19 13:35:43,961 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:35:43,961 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:35:43,961 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-19 13:35:43,961 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-19 13:35:43,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:35:43,962 INFO L85 PathProgramCache]: Analyzing trace with hash -623509692, now seen corresponding path program 1 times [2021-11-19 13:35:43,962 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:35:43,962 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096541371] [2021-11-19 13:35:43,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:35:43,963 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:35:44,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:35:44,085 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-19 13:35:44,085 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:35:44,085 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096541371] [2021-11-19 13:35:44,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096541371] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:35:44,086 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:35:44,086 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 13:35:44,086 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018245995] [2021-11-19 13:35:44,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:35:44,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 13:35:44,087 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:35:44,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 13:35:44,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:35:44,088 INFO L87 Difference]: Start difference. First operand 1004 states and 1230 transitions. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:45,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:35:45,423 INFO L93 Difference]: Finished difference Result 2495 states and 3071 transitions. [2021-11-19 13:35:45,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-19 13:35:45,424 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 118 [2021-11-19 13:35:45,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:35:45,429 INFO L225 Difference]: With dead ends: 2495 [2021-11-19 13:35:45,430 INFO L226 Difference]: Without dead ends: 1561 [2021-11-19 13:35:45,431 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2021-11-19 13:35:45,431 INFO L933 BasicCegarLoop]: 107 mSDtfsCounter, 432 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 432 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:35:45,432 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [432 Valid, 356 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 13:35:45,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1561 states. [2021-11-19 13:35:46,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1561 to 1004. [2021-11-19 13:35:46,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1004 states, 1003 states have (on average 1.2253240279162512) internal successors, (1229), 1003 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:46,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1004 states to 1004 states and 1229 transitions. [2021-11-19 13:35:46,170 INFO L78 Accepts]: Start accepts. Automaton has 1004 states and 1229 transitions. Word has length 118 [2021-11-19 13:35:46,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:35:46,170 INFO L470 AbstractCegarLoop]: Abstraction has 1004 states and 1229 transitions. [2021-11-19 13:35:46,171 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:46,171 INFO L276 IsEmpty]: Start isEmpty. Operand 1004 states and 1229 transitions. [2021-11-19 13:35:46,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-11-19 13:35:46,174 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:35:46,175 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:35:46,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-19 13:35:46,177 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-19 13:35:46,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:35:46,178 INFO L85 PathProgramCache]: Analyzing trace with hash -2029975393, now seen corresponding path program 1 times [2021-11-19 13:35:46,178 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:35:46,179 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205692437] [2021-11-19 13:35:46,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:35:46,181 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:35:46,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:35:46,707 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-19 13:35:46,707 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:35:46,707 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205692437] [2021-11-19 13:35:46,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205692437] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:35:46,708 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:35:46,708 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-11-19 13:35:46,708 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925651866] [2021-11-19 13:35:46,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:35:46,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-19 13:35:46,709 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:35:46,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-19 13:35:46,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2021-11-19 13:35:46,710 INFO L87 Difference]: Start difference. First operand 1004 states and 1229 transitions. Second operand has 21 states, 21 states have (on average 5.285714285714286) internal successors, (111), 21 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:50,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:35:50,150 INFO L93 Difference]: Finished difference Result 3782 states and 4654 transitions. [2021-11-19 13:35:50,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-19 13:35:50,150 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.285714285714286) internal successors, (111), 21 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2021-11-19 13:35:50,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:35:50,160 INFO L225 Difference]: With dead ends: 3782 [2021-11-19 13:35:50,160 INFO L226 Difference]: Without dead ends: 2847 [2021-11-19 13:35:50,162 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=220, Invalid=1112, Unknown=0, NotChecked=0, Total=1332 [2021-11-19 13:35:50,163 INFO L933 BasicCegarLoop]: 300 mSDtfsCounter, 893 mSDsluCounter, 3364 mSDsCounter, 0 mSdLazyCounter, 1710 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 893 SdHoareTripleChecker+Valid, 3587 SdHoareTripleChecker+Invalid, 1742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1710 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-19 13:35:50,163 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [893 Valid, 3587 Invalid, 1742 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1710 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-19 13:35:50,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2847 states. [2021-11-19 13:35:50,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2847 to 1022. [2021-11-19 13:35:50,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1022 states, 1021 states have (on average 1.2233104799216454) internal successors, (1249), 1021 states have internal predecessors, (1249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:50,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1022 states to 1022 states and 1249 transitions. [2021-11-19 13:35:50,857 INFO L78 Accepts]: Start accepts. Automaton has 1022 states and 1249 transitions. Word has length 120 [2021-11-19 13:35:50,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:35:50,858 INFO L470 AbstractCegarLoop]: Abstraction has 1022 states and 1249 transitions. [2021-11-19 13:35:50,858 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.285714285714286) internal successors, (111), 21 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:50,858 INFO L276 IsEmpty]: Start isEmpty. Operand 1022 states and 1249 transitions. [2021-11-19 13:35:50,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-19 13:35:50,860 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:35:50,860 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:35:50,860 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-11-19 13:35:50,860 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-19 13:35:50,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:35:50,861 INFO L85 PathProgramCache]: Analyzing trace with hash 1302073409, now seen corresponding path program 1 times [2021-11-19 13:35:50,861 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:35:50,861 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880727466] [2021-11-19 13:35:50,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:35:50,862 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:35:50,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:35:52,730 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:35:52,730 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:35:52,730 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880727466] [2021-11-19 13:35:52,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880727466] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 13:35:52,730 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1502409070] [2021-11-19 13:35:52,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:35:52,731 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:35:52,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f7d67ef-b93f-4869-9073-2535855eae75/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:35:52,732 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f7d67ef-b93f-4869-9073-2535855eae75/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:35:52,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f7d67ef-b93f-4869-9073-2535855eae75/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-19 13:35:52,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:35:52,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 665 conjuncts, 73 conjunts are in the unsatisfiable core [2021-11-19 13:35:52,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:36:43,708 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:36:43,708 INFO L328 TraceCheckSpWp]: Computing backward predicates...