./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deced544-0ba0-4e19-934d-d4b5fb46a2b1/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deced544-0ba0-4e19-934d-d4b5fb46a2b1/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deced544-0ba0-4e19-934d-d4b5fb46a2b1/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deced544-0ba0-4e19-934d-d4b5fb46a2b1/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deced544-0ba0-4e19-934d-d4b5fb46a2b1/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deced544-0ba0-4e19-934d-d4b5fb46a2b1/bin/utaipan-vmNK8stdcF --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 d5f122a2f661c35cf909df5e65028709a713dbb0aa782040b0d88c7cb2c6627f --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:42:39,364 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:42:39,366 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:42:39,401 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:42:39,402 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:42:39,404 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:42:39,405 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:42:39,408 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:42:39,410 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:42:39,411 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:42:39,412 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:42:39,414 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:42:39,415 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:42:39,416 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:42:39,418 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:42:39,419 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:42:39,420 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:42:39,422 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:42:39,424 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:42:39,426 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:42:39,428 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:42:39,430 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:42:39,431 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:42:39,432 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:42:39,436 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:42:39,436 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:42:39,437 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:42:39,438 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:42:39,438 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:42:39,440 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:42:39,440 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:42:39,441 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:42:39,442 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:42:39,443 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:42:39,445 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:42:39,445 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:42:39,446 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:42:39,446 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:42:39,447 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:42:39,448 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:42:39,449 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:42:39,450 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deced544-0ba0-4e19-934d-d4b5fb46a2b1/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-12 23:42:39,474 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:42:39,477 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:42:39,478 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:42:39,479 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:42:39,479 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:42:39,480 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:42:39,480 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:42:39,480 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 23:42:39,480 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:42:39,481 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:42:39,485 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 23:42:39,485 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 23:42:39,485 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:42:39,486 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 23:42:39,486 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 23:42:39,486 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 23:42:39,487 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:42:39,487 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 23:42:39,487 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 23:42:39,487 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 23:42:39,488 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:42:39,488 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:42:39,488 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:42:39,488 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:42:39,489 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:42:39,489 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 23:42:39,489 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:42:39,489 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:42:39,489 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:42:39,491 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:42:39,491 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:42:39,492 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:42:39,492 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:42:39,492 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:42:39,492 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:42:39,493 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 23:42:39,493 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 23:42:39,493 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:42:39,493 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:42:39,494 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:42:39,494 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_deced544-0ba0-4e19-934d-d4b5fb46a2b1/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deced544-0ba0-4e19-934d-d4b5fb46a2b1/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d5f122a2f661c35cf909df5e65028709a713dbb0aa782040b0d88c7cb2c6627f [2021-11-12 23:42:39,762 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:42:39,783 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:42:39,786 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:42:39,787 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:42:39,788 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:42:39,790 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deced544-0ba0-4e19-934d-d4b5fb46a2b1/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2021-11-12 23:42:39,884 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deced544-0ba0-4e19-934d-d4b5fb46a2b1/bin/utaipan-vmNK8stdcF/data/966480129/6c0d3955045d4913882ce82cb52dd0e9/FLAGd1bec556c [2021-11-12 23:42:40,691 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:42:40,692 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deced544-0ba0-4e19-934d-d4b5fb46a2b1/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2021-11-12 23:42:40,718 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deced544-0ba0-4e19-934d-d4b5fb46a2b1/bin/utaipan-vmNK8stdcF/data/966480129/6c0d3955045d4913882ce82cb52dd0e9/FLAGd1bec556c [2021-11-12 23:42:40,793 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deced544-0ba0-4e19-934d-d4b5fb46a2b1/bin/utaipan-vmNK8stdcF/data/966480129/6c0d3955045d4913882ce82cb52dd0e9 [2021-11-12 23:42:40,799 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:42:40,801 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:42:40,803 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:42:40,803 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:42:40,807 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:42:40,808 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:42:40" (1/1) ... [2021-11-12 23:42:40,809 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1432dfb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:42:40, skipping insertion in model container [2021-11-12 23:42:40,810 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:42:40" (1/1) ... [2021-11-12 23:42:40,818 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:42:41,001 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:42:41,861 WARN L228 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_deced544-0ba0-4e19-934d-d4b5fb46a2b1/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[35167,35180] [2021-11-12 23:42:41,895 WARN L228 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_deced544-0ba0-4e19-934d-d4b5fb46a2b1/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[36057,36070] [2021-11-12 23:42:41,935 WARN L228 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_deced544-0ba0-4e19-934d-d4b5fb46a2b1/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[37945,37958] [2021-11-12 23:42:41,958 WARN L228 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_deced544-0ba0-4e19-934d-d4b5fb46a2b1/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[38835,38848] [2021-11-12 23:42:42,003 WARN L228 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_deced544-0ba0-4e19-934d-d4b5fb46a2b1/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[41666,41679] [2021-11-12 23:42:42,025 WARN L228 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_deced544-0ba0-4e19-934d-d4b5fb46a2b1/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[42559,42572] [2021-11-12 23:42:42,064 WARN L228 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_deced544-0ba0-4e19-934d-d4b5fb46a2b1/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[44450,44463] [2021-11-12 23:42:42,096 WARN L228 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_deced544-0ba0-4e19-934d-d4b5fb46a2b1/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[45727,45740] [2021-11-12 23:42:42,332 WARN L228 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_deced544-0ba0-4e19-934d-d4b5fb46a2b1/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[61515,61528] [2021-11-12 23:42:42,356 WARN L228 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_deced544-0ba0-4e19-934d-d4b5fb46a2b1/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[62408,62421] [2021-11-12 23:42:42,400 WARN L228 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_deced544-0ba0-4e19-934d-d4b5fb46a2b1/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[64299,64312] [2021-11-12 23:42:42,475 WARN L228 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_deced544-0ba0-4e19-934d-d4b5fb46a2b1/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[68814,68827] [2021-11-12 23:42:42,643 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:42:42,655 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 23:42:43,028 WARN L228 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_deced544-0ba0-4e19-934d-d4b5fb46a2b1/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[35167,35180] [2021-11-12 23:42:43,049 WARN L228 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_deced544-0ba0-4e19-934d-d4b5fb46a2b1/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[36057,36070] [2021-11-12 23:42:43,080 WARN L228 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_deced544-0ba0-4e19-934d-d4b5fb46a2b1/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[37945,37958] [2021-11-12 23:42:43,099 WARN L228 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_deced544-0ba0-4e19-934d-d4b5fb46a2b1/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[38835,38848] [2021-11-12 23:42:43,143 WARN L228 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_deced544-0ba0-4e19-934d-d4b5fb46a2b1/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[41666,41679] [2021-11-12 23:42:43,162 WARN L228 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_deced544-0ba0-4e19-934d-d4b5fb46a2b1/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[42559,42572] [2021-11-12 23:42:43,198 WARN L228 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_deced544-0ba0-4e19-934d-d4b5fb46a2b1/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[44450,44463] [2021-11-12 23:42:43,224 WARN L228 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_deced544-0ba0-4e19-934d-d4b5fb46a2b1/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[45727,45740] [2021-11-12 23:42:43,404 WARN L228 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_deced544-0ba0-4e19-934d-d4b5fb46a2b1/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[61515,61528] [2021-11-12 23:42:43,424 WARN L228 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_deced544-0ba0-4e19-934d-d4b5fb46a2b1/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[62408,62421] [2021-11-12 23:42:43,458 WARN L228 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_deced544-0ba0-4e19-934d-d4b5fb46a2b1/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[64299,64312] [2021-11-12 23:42:43,537 WARN L228 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_deced544-0ba0-4e19-934d-d4b5fb46a2b1/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[68814,68827] [2021-11-12 23:42:43,673 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:42:43,698 INFO L208 MainTranslator]: Completed translation [2021-11-12 23:42:43,699 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:42:43 WrapperNode [2021-11-12 23:42:43,699 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:42:43,700 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 23:42:43,700 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 23:42:43,700 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 23:42:43,709 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:42:43" (1/1) ... [2021-11-12 23:42:43,771 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:42:43" (1/1) ... [2021-11-12 23:42:43,904 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 23:42:43,905 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 23:42:43,905 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 23:42:43,906 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 23:42:43,915 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:42:43" (1/1) ... [2021-11-12 23:42:43,916 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:42:43" (1/1) ... [2021-11-12 23:42:43,924 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:42:43" (1/1) ... [2021-11-12 23:42:43,924 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:42:43" (1/1) ... [2021-11-12 23:42:43,971 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:42:43" (1/1) ... [2021-11-12 23:42:44,022 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:42:43" (1/1) ... [2021-11-12 23:42:44,039 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:42:43" (1/1) ... [2021-11-12 23:42:44,066 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 23:42:44,067 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 23:42:44,067 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 23:42:44,068 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 23:42:44,069 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:42:43" (1/1) ... [2021-11-12 23:42:44,077 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:42:44,092 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deced544-0ba0-4e19-934d-d4b5fb46a2b1/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:42:44,116 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deced544-0ba0-4e19-934d-d4b5fb46a2b1/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 23:42:44,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deced544-0ba0-4e19-934d-d4b5fb46a2b1/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 23:42:44,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-12 23:42:44,174 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 23:42:44,175 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 23:42:44,176 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 23:42:48,536 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 23:42:48,536 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-12 23:42:48,544 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:42:48 BoogieIcfgContainer [2021-11-12 23:42:48,544 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 23:42:48,549 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 23:42:48,549 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 23:42:48,552 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 23:42:48,553 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 11:42:40" (1/3) ... [2021-11-12 23:42:48,554 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@787ee749 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:42:48, skipping insertion in model container [2021-11-12 23:42:48,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:42:43" (2/3) ... [2021-11-12 23:42:48,555 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@787ee749 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:42:48, skipping insertion in model container [2021-11-12 23:42:48,555 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:42:48" (3/3) ... [2021-11-12 23:42:48,558 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2021-11-12 23:42:48,568 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 23:42:48,568 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2021-11-12 23:42:48,640 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 23:42:48,649 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 [2021-11-12 23:42:48,649 INFO L340 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2021-11-12 23:42:48,689 INFO L276 IsEmpty]: Start isEmpty. Operand has 781 states, 768 states have (on average 1.76953125) internal successors, (1359), 780 states have internal predecessors, (1359), 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) [2021-11-12 23:42:48,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2021-11-12 23:42:48,751 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:42:48,752 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:42:48,753 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-12 23:42:48,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:42:48,760 INFO L85 PathProgramCache]: Analyzing trace with hash -1424408807, now seen corresponding path program 1 times [2021-11-12 23:42:48,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:42:48,770 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895097285] [2021-11-12 23:42:48,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:42:48,772 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:42:49,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:42:50,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:42:50,196 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:42:50,196 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895097285] [2021-11-12 23:42:50,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895097285] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:42:50,197 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:42:50,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-12 23:42:50,199 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51496848] [2021-11-12 23:42:50,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:42:50,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:42:50,206 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:42:50,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:42:50,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:42:50,258 INFO L87 Difference]: Start difference. First operand has 781 states, 768 states have (on average 1.76953125) internal successors, (1359), 780 states have internal predecessors, (1359), 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 4 states, 4 states have (on average 68.5) internal successors, (274), 3 states have internal predecessors, (274), 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) [2021-11-12 23:42:50,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:42:50,978 INFO L93 Difference]: Finished difference Result 2307 states and 4018 transitions. [2021-11-12 23:42:50,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:42:50,981 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 68.5) internal successors, (274), 3 states have internal predecessors, (274), 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 274 [2021-11-12 23:42:50,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:42:51,019 INFO L225 Difference]: With dead ends: 2307 [2021-11-12 23:42:51,019 INFO L226 Difference]: Without dead ends: 1531 [2021-11-12 23:42:51,031 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:42:51,042 INFO L933 BasicCegarLoop]: 1850 mSDtfsCounter, 3263 mSDsluCounter, 1283 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 346.19ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3263 SdHoareTripleChecker+Valid, 3081 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 29.79ms SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 447.15ms IncrementalHoareTripleChecker+Time [2021-11-12 23:42:51,043 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3263 Valid, 3081 Invalid, 193 Unknown, 0 Unchecked, 29.79ms Time], IncrementalHoareTripleChecker [19 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 447.15ms Time] [2021-11-12 23:42:51,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1531 states. [2021-11-12 23:42:51,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1531 to 1461. [2021-11-12 23:42:51,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1461 states, 1449 states have (on average 1.401656314699793) internal successors, (2031), 1460 states have internal predecessors, (2031), 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) [2021-11-12 23:42:51,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1461 states to 1461 states and 2031 transitions. [2021-11-12 23:42:51,221 INFO L78 Accepts]: Start accepts. Automaton has 1461 states and 2031 transitions. Word has length 274 [2021-11-12 23:42:51,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:42:51,263 INFO L470 AbstractCegarLoop]: Abstraction has 1461 states and 2031 transitions. [2021-11-12 23:42:51,263 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 68.5) internal successors, (274), 3 states have internal predecessors, (274), 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) [2021-11-12 23:42:51,264 INFO L276 IsEmpty]: Start isEmpty. Operand 1461 states and 2031 transitions. [2021-11-12 23:42:51,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2021-11-12 23:42:51,271 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:42:51,271 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:42:51,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-12 23:42:51,272 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-12 23:42:51,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:42:51,273 INFO L85 PathProgramCache]: Analyzing trace with hash -1564065137, now seen corresponding path program 1 times [2021-11-12 23:42:51,273 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:42:51,274 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283547702] [2021-11-12 23:42:51,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:42:51,274 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:42:51,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:42:51,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:42:51,458 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:42:51,459 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283547702] [2021-11-12 23:42:51,459 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283547702] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:42:51,459 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:42:51,459 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-12 23:42:51,460 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398968023] [2021-11-12 23:42:51,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:42:51,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:42:51,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:42:51,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:42:51,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:42:51,463 INFO L87 Difference]: Start difference. First operand 1461 states and 2031 transitions. Second operand has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 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) [2021-11-12 23:42:51,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:42:51,927 INFO L93 Difference]: Finished difference Result 4214 states and 5827 transitions. [2021-11-12 23:42:51,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:42:51,929 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 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 276 [2021-11-12 23:42:51,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:42:51,952 INFO L225 Difference]: With dead ends: 4214 [2021-11-12 23:42:51,952 INFO L226 Difference]: Without dead ends: 2874 [2021-11-12 23:42:51,963 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 [2021-11-12 23:42:51,966 INFO L933 BasicCegarLoop]: 1979 mSDtfsCounter, 947 mSDsluCounter, 1022 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 258.71ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 947 SdHoareTripleChecker+Valid, 2952 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.84ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 314.85ms IncrementalHoareTripleChecker+Time [2021-11-12 23:42:51,967 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [947 Valid, 2952 Invalid, 189 Unknown, 0 Unchecked, 8.84ms Time], IncrementalHoareTripleChecker [9 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 314.85ms Time] [2021-11-12 23:42:51,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2874 states. [2021-11-12 23:42:52,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2874 to 2804. [2021-11-12 23:42:52,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2804 states, 2792 states have (on average 1.4015042979942693) internal successors, (3913), 2803 states have internal predecessors, (3913), 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) [2021-11-12 23:42:52,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2804 states to 2804 states and 3913 transitions. [2021-11-12 23:42:52,143 INFO L78 Accepts]: Start accepts. Automaton has 2804 states and 3913 transitions. Word has length 276 [2021-11-12 23:42:52,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:42:52,146 INFO L470 AbstractCegarLoop]: Abstraction has 2804 states and 3913 transitions. [2021-11-12 23:42:52,147 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 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) [2021-11-12 23:42:52,147 INFO L276 IsEmpty]: Start isEmpty. Operand 2804 states and 3913 transitions. [2021-11-12 23:42:52,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2021-11-12 23:42:52,160 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:42:52,160 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:42:52,160 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-12 23:42:52,161 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-12 23:42:52,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:42:52,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1734834290, now seen corresponding path program 1 times [2021-11-12 23:42:52,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:42:52,166 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104424973] [2021-11-12 23:42:52,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:42:52,169 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:42:52,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:42:52,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:42:52,321 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:42:52,321 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104424973] [2021-11-12 23:42:52,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104424973] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:42:52,322 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:42:52,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-12 23:42:52,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114594128] [2021-11-12 23:42:52,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:42:52,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:42:52,324 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:42:52,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:42:52,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:42:52,325 INFO L87 Difference]: Start difference. First operand 2804 states and 3913 transitions. Second operand has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 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) [2021-11-12 23:42:52,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:42:52,964 INFO L93 Difference]: Finished difference Result 8260 states and 11506 transitions. [2021-11-12 23:42:52,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:42:52,965 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 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 276 [2021-11-12 23:42:52,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:42:53,000 INFO L225 Difference]: With dead ends: 8260 [2021-11-12 23:42:53,000 INFO L226 Difference]: Without dead ends: 5588 [2021-11-12 23:42:53,005 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 [2021-11-12 23:42:53,007 INFO L933 BasicCegarLoop]: 2022 mSDtfsCounter, 1063 mSDsluCounter, 1063 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 247.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1063 SdHoareTripleChecker+Valid, 3031 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.35ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 296.16ms IncrementalHoareTripleChecker+Time [2021-11-12 23:42:53,007 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1063 Valid, 3031 Invalid, 171 Unknown, 0 Unchecked, 9.35ms Time], IncrementalHoareTripleChecker [1 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 296.16ms Time] [2021-11-12 23:42:53,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5588 states. [2021-11-12 23:42:53,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5588 to 2807. [2021-11-12 23:42:53,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2807 states, 2795 states have (on average 1.4010733452593918) internal successors, (3916), 2806 states have internal predecessors, (3916), 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) [2021-11-12 23:42:53,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2807 states to 2807 states and 3916 transitions. [2021-11-12 23:42:53,222 INFO L78 Accepts]: Start accepts. Automaton has 2807 states and 3916 transitions. Word has length 276 [2021-11-12 23:42:53,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:42:53,222 INFO L470 AbstractCegarLoop]: Abstraction has 2807 states and 3916 transitions. [2021-11-12 23:42:53,222 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 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) [2021-11-12 23:42:53,223 INFO L276 IsEmpty]: Start isEmpty. Operand 2807 states and 3916 transitions. [2021-11-12 23:42:53,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2021-11-12 23:42:53,233 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:42:53,233 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:42:53,233 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-12 23:42:53,233 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-12 23:42:53,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:42:53,234 INFO L85 PathProgramCache]: Analyzing trace with hash 2026009502, now seen corresponding path program 1 times [2021-11-12 23:42:53,234 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:42:53,235 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868965087] [2021-11-12 23:42:53,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:42:53,235 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:42:53,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:42:53,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:42:53,363 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:42:53,363 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868965087] [2021-11-12 23:42:53,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868965087] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:42:53,364 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:42:53,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-12 23:42:53,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314348161] [2021-11-12 23:42:53,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:42:53,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:42:53,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:42:53,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:42:53,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:42:53,366 INFO L87 Difference]: Start difference. First operand 2807 states and 3916 transitions. Second operand has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 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) [2021-11-12 23:42:53,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:42:53,897 INFO L93 Difference]: Finished difference Result 5909 states and 8382 transitions. [2021-11-12 23:42:53,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:42:53,897 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 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 277 [2021-11-12 23:42:53,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:42:53,922 INFO L225 Difference]: With dead ends: 5909 [2021-11-12 23:42:53,923 INFO L226 Difference]: Without dead ends: 3789 [2021-11-12 23:42:53,927 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 [2021-11-12 23:42:53,928 INFO L933 BasicCegarLoop]: 1388 mSDtfsCounter, 574 mSDsluCounter, 847 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 253.15ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 574 SdHoareTripleChecker+Valid, 2183 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.90ms SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 296.27ms IncrementalHoareTripleChecker+Time [2021-11-12 23:42:53,929 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [574 Valid, 2183 Invalid, 161 Unknown, 0 Unchecked, 6.90ms Time], IncrementalHoareTripleChecker [18 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 296.27ms Time] [2021-11-12 23:42:53,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3789 states. [2021-11-12 23:42:54,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3789 to 3183. [2021-11-12 23:42:54,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3183 states, 3171 states have (on average 1.425417849258909) internal successors, (4520), 3182 states have internal predecessors, (4520), 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) [2021-11-12 23:42:54,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3183 states to 3183 states and 4520 transitions. [2021-11-12 23:42:54,239 INFO L78 Accepts]: Start accepts. Automaton has 3183 states and 4520 transitions. Word has length 277 [2021-11-12 23:42:54,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:42:54,240 INFO L470 AbstractCegarLoop]: Abstraction has 3183 states and 4520 transitions. [2021-11-12 23:42:54,240 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 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) [2021-11-12 23:42:54,240 INFO L276 IsEmpty]: Start isEmpty. Operand 3183 states and 4520 transitions. [2021-11-12 23:42:54,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2021-11-12 23:42:54,251 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:42:54,251 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:42:54,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-12 23:42:54,252 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-12 23:42:54,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:42:54,252 INFO L85 PathProgramCache]: Analyzing trace with hash -167079031, now seen corresponding path program 1 times [2021-11-12 23:42:54,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:42:54,253 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867409740] [2021-11-12 23:42:54,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:42:54,253 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:42:54,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:42:54,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:42:54,894 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:42:54,894 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867409740] [2021-11-12 23:42:54,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867409740] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:42:54,894 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:42:54,895 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-12 23:42:54,896 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685099186] [2021-11-12 23:42:54,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:42:54,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:42:54,902 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:42:54,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:42:54,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:42:54,903 INFO L87 Difference]: Start difference. First operand 3183 states and 4520 transitions. Second operand has 5 states, 5 states have (on average 55.4) internal successors, (277), 4 states have internal predecessors, (277), 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) [2021-11-12 23:42:55,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:42:55,810 INFO L93 Difference]: Finished difference Result 9299 states and 13183 transitions. [2021-11-12 23:42:55,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:42:55,810 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 55.4) internal successors, (277), 4 states have internal predecessors, (277), 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 277 [2021-11-12 23:42:55,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:42:55,845 INFO L225 Difference]: With dead ends: 9299 [2021-11-12 23:42:55,845 INFO L226 Difference]: Without dead ends: 6131 [2021-11-12 23:42:55,850 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:42:55,851 INFO L933 BasicCegarLoop]: 1744 mSDtfsCounter, 2349 mSDsluCounter, 2018 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 348.62ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2349 SdHoareTripleChecker+Valid, 3666 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.35ms SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 415.49ms IncrementalHoareTripleChecker+Time [2021-11-12 23:42:55,852 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2349 Valid, 3666 Invalid, 266 Unknown, 0 Unchecked, 14.35ms Time], IncrementalHoareTripleChecker [18 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 415.49ms Time] [2021-11-12 23:42:55,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6131 states. [2021-11-12 23:42:56,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6131 to 6061. [2021-11-12 23:42:56,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6061 states, 6049 states have (on average 1.4182509505703422) internal successors, (8579), 6060 states have internal predecessors, (8579), 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) [2021-11-12 23:42:56,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6061 states to 6061 states and 8579 transitions. [2021-11-12 23:42:56,273 INFO L78 Accepts]: Start accepts. Automaton has 6061 states and 8579 transitions. Word has length 277 [2021-11-12 23:42:56,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:42:56,274 INFO L470 AbstractCegarLoop]: Abstraction has 6061 states and 8579 transitions. [2021-11-12 23:42:56,274 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 55.4) internal successors, (277), 4 states have internal predecessors, (277), 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) [2021-11-12 23:42:56,274 INFO L276 IsEmpty]: Start isEmpty. Operand 6061 states and 8579 transitions. [2021-11-12 23:42:56,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2021-11-12 23:42:56,289 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:42:56,289 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:42:56,289 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-12 23:42:56,290 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-12 23:42:56,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:42:56,291 INFO L85 PathProgramCache]: Analyzing trace with hash -1939353955, now seen corresponding path program 1 times [2021-11-12 23:42:56,291 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:42:56,291 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535222961] [2021-11-12 23:42:56,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:42:56,291 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:42:56,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:42:56,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:42:56,831 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:42:56,831 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535222961] [2021-11-12 23:42:56,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535222961] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:42:56,831 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:42:56,831 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-12 23:42:56,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817407098] [2021-11-12 23:42:56,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:42:56,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:42:56,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:42:56,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:42:56,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:42:56,834 INFO L87 Difference]: Start difference. First operand 6061 states and 8579 transitions. Second operand has 4 states, 4 states have (on average 69.5) internal successors, (278), 3 states have internal predecessors, (278), 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) [2021-11-12 23:42:58,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:42:58,027 INFO L93 Difference]: Finished difference Result 17636 states and 24891 transitions. [2021-11-12 23:42:58,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:42:58,028 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 69.5) internal successors, (278), 3 states have internal predecessors, (278), 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 278 [2021-11-12 23:42:58,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:42:58,097 INFO L225 Difference]: With dead ends: 17636 [2021-11-12 23:42:58,097 INFO L226 Difference]: Without dead ends: 11713 [2021-11-12 23:42:58,106 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:42:58,108 INFO L933 BasicCegarLoop]: 1736 mSDtfsCounter, 2237 mSDsluCounter, 1008 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 257.64ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2237 SdHoareTripleChecker+Valid, 2701 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.28ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 309.32ms IncrementalHoareTripleChecker+Time [2021-11-12 23:42:58,108 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2237 Valid, 2701 Invalid, 191 Unknown, 0 Unchecked, 18.28ms Time], IncrementalHoareTripleChecker [15 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 309.32ms Time] [2021-11-12 23:42:58,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11713 states. [2021-11-12 23:42:58,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11713 to 11643. [2021-11-12 23:42:58,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11643 states, 11631 states have (on average 1.4083053907660563) internal successors, (16380), 11642 states have internal predecessors, (16380), 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) [2021-11-12 23:42:58,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11643 states to 11643 states and 16380 transitions. [2021-11-12 23:42:58,978 INFO L78 Accepts]: Start accepts. Automaton has 11643 states and 16380 transitions. Word has length 278 [2021-11-12 23:42:58,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:42:58,980 INFO L470 AbstractCegarLoop]: Abstraction has 11643 states and 16380 transitions. [2021-11-12 23:42:58,981 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.5) internal successors, (278), 3 states have internal predecessors, (278), 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) [2021-11-12 23:42:58,981 INFO L276 IsEmpty]: Start isEmpty. Operand 11643 states and 16380 transitions. [2021-11-12 23:42:59,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2021-11-12 23:42:59,005 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:42:59,005 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:42:59,005 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-12 23:42:59,006 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-12 23:42:59,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:42:59,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1679953120, now seen corresponding path program 1 times [2021-11-12 23:42:59,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:42:59,007 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482120673] [2021-11-12 23:42:59,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:42:59,008 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:42:59,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:42:59,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:42:59,400 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:42:59,400 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482120673] [2021-11-12 23:42:59,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482120673] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:42:59,400 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:42:59,400 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-12 23:42:59,401 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544305127] [2021-11-12 23:42:59,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:42:59,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:42:59,402 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:42:59,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:42:59,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:42:59,403 INFO L87 Difference]: Start difference. First operand 11643 states and 16380 transitions. Second operand has 4 states, 4 states have (on average 70.0) internal successors, (280), 3 states have internal predecessors, (280), 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) [2021-11-12 23:43:01,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:43:01,107 INFO L93 Difference]: Finished difference Result 34255 states and 48091 transitions. [2021-11-12 23:43:01,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:43:01,108 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 70.0) internal successors, (280), 3 states have internal predecessors, (280), 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 280 [2021-11-12 23:43:01,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:43:01,185 INFO L225 Difference]: With dead ends: 34255 [2021-11-12 23:43:01,185 INFO L226 Difference]: Without dead ends: 22754 [2021-11-12 23:43:01,212 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:43:01,214 INFO L933 BasicCegarLoop]: 1564 mSDtfsCounter, 2378 mSDsluCounter, 1008 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 265.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2378 SdHoareTripleChecker+Valid, 2520 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.74ms SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 318.70ms IncrementalHoareTripleChecker+Time [2021-11-12 23:43:01,214 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2378 Valid, 2520 Invalid, 198 Unknown, 0 Unchecked, 14.74ms Time], IncrementalHoareTripleChecker [19 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 318.70ms Time] [2021-11-12 23:43:01,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22754 states. [2021-11-12 23:43:02,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22754 to 22684. [2021-11-12 23:43:02,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22684 states, 22672 states have (on average 1.3986414961185603) internal successors, (31710), 22683 states have internal predecessors, (31710), 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) [2021-11-12 23:43:02,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22684 states to 22684 states and 31710 transitions. [2021-11-12 23:43:02,986 INFO L78 Accepts]: Start accepts. Automaton has 22684 states and 31710 transitions. Word has length 280 [2021-11-12 23:43:02,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:43:02,987 INFO L470 AbstractCegarLoop]: Abstraction has 22684 states and 31710 transitions. [2021-11-12 23:43:02,987 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 70.0) internal successors, (280), 3 states have internal predecessors, (280), 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) [2021-11-12 23:43:02,988 INFO L276 IsEmpty]: Start isEmpty. Operand 22684 states and 31710 transitions. [2021-11-12 23:43:03,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2021-11-12 23:43:03,036 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:43:03,037 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:43:03,037 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-12 23:43:03,038 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-12 23:43:03,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:43:03,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1365533759, now seen corresponding path program 1 times [2021-11-12 23:43:03,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:43:03,039 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684058365] [2021-11-12 23:43:03,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:43:03,040 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:43:03,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:43:03,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:43:03,179 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:43:03,179 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684058365] [2021-11-12 23:43:03,179 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684058365] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:43:03,179 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:43:03,179 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-12 23:43:03,180 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744604649] [2021-11-12 23:43:03,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:43:03,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:43:03,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:43:03,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:43:03,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:43:03,182 INFO L87 Difference]: Start difference. First operand 22684 states and 31710 transitions. Second operand has 3 states, 3 states have (on average 94.0) internal successors, (282), 3 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) [2021-11-12 23:43:05,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:43:05,820 INFO L93 Difference]: Finished difference Result 65579 states and 91299 transitions. [2021-11-12 23:43:05,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:43:05,820 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 94.0) internal successors, (282), 3 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) Word has length 282 [2021-11-12 23:43:05,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:43:05,942 INFO L225 Difference]: With dead ends: 65579 [2021-11-12 23:43:05,942 INFO L226 Difference]: Without dead ends: 44457 [2021-11-12 23:43:05,984 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 [2021-11-12 23:43:05,985 INFO L933 BasicCegarLoop]: 1952 mSDtfsCounter, 927 mSDsluCounter, 1020 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 278.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 927 SdHoareTripleChecker+Valid, 2922 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.79ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 331.38ms IncrementalHoareTripleChecker+Time [2021-11-12 23:43:05,985 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [927 Valid, 2922 Invalid, 184 Unknown, 0 Unchecked, 16.79ms Time], IncrementalHoareTripleChecker [9 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 331.38ms Time] [2021-11-12 23:43:06,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44457 states. [2021-11-12 23:43:08,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44457 to 44387. [2021-11-12 23:43:08,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44387 states, 44375 states have (on average 1.3910760563380282) internal successors, (61729), 44386 states have internal predecessors, (61729), 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) [2021-11-12 23:43:08,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44387 states to 44387 states and 61729 transitions. [2021-11-12 23:43:08,786 INFO L78 Accepts]: Start accepts. Automaton has 44387 states and 61729 transitions. Word has length 282 [2021-11-12 23:43:08,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:43:08,787 INFO L470 AbstractCegarLoop]: Abstraction has 44387 states and 61729 transitions. [2021-11-12 23:43:08,788 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.0) internal successors, (282), 3 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) [2021-11-12 23:43:08,788 INFO L276 IsEmpty]: Start isEmpty. Operand 44387 states and 61729 transitions. [2021-11-12 23:43:08,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2021-11-12 23:43:08,865 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:43:08,865 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:43:08,866 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-12 23:43:08,866 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-12 23:43:08,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:43:08,867 INFO L85 PathProgramCache]: Analyzing trace with hash 906493418, now seen corresponding path program 1 times [2021-11-12 23:43:08,867 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:43:08,867 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628871497] [2021-11-12 23:43:08,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:43:08,868 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:43:08,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:43:08,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:43:08,943 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:43:08,943 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628871497] [2021-11-12 23:43:08,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628871497] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:43:08,944 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:43:08,944 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-12 23:43:08,944 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303468002] [2021-11-12 23:43:08,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:43:08,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:43:08,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:43:08,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:43:08,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:43:08,947 INFO L87 Difference]: Start difference. First operand 44387 states and 61729 transitions. Second operand has 3 states, 3 states have (on average 94.0) internal successors, (282), 3 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) [2021-11-12 23:43:12,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:43:12,989 INFO L93 Difference]: Finished difference Result 131226 states and 182305 transitions. [2021-11-12 23:43:12,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:43:12,990 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 94.0) internal successors, (282), 3 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) Word has length 282 [2021-11-12 23:43:12,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:43:13,215 INFO L225 Difference]: With dead ends: 131226 [2021-11-12 23:43:13,215 INFO L226 Difference]: Without dead ends: 88525 [2021-11-12 23:43:13,281 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 [2021-11-12 23:43:13,282 INFO L933 BasicCegarLoop]: 1995 mSDtfsCounter, 1036 mSDsluCounter, 1060 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 255.76ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1036 SdHoareTripleChecker+Valid, 3001 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.23ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 338.77ms IncrementalHoareTripleChecker+Time [2021-11-12 23:43:13,282 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1036 Valid, 3001 Invalid, 168 Unknown, 0 Unchecked, 10.23ms Time], IncrementalHoareTripleChecker [1 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 338.77ms Time] [2021-11-12 23:43:13,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88525 states. [2021-11-12 23:43:16,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88525 to 44420. [2021-11-12 23:43:16,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44420 states, 44408 states have (on average 1.3907854440641325) internal successors, (61762), 44419 states have internal predecessors, (61762), 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) [2021-11-12 23:43:16,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44420 states to 44420 states and 61762 transitions. [2021-11-12 23:43:16,481 INFO L78 Accepts]: Start accepts. Automaton has 44420 states and 61762 transitions. Word has length 282 [2021-11-12 23:43:16,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:43:16,482 INFO L470 AbstractCegarLoop]: Abstraction has 44420 states and 61762 transitions. [2021-11-12 23:43:16,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.0) internal successors, (282), 3 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) [2021-11-12 23:43:16,483 INFO L276 IsEmpty]: Start isEmpty. Operand 44420 states and 61762 transitions. [2021-11-12 23:43:16,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2021-11-12 23:43:16,534 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:43:16,535 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:43:16,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-12 23:43:16,536 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-12 23:43:16,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:43:16,536 INFO L85 PathProgramCache]: Analyzing trace with hash 454303883, now seen corresponding path program 1 times [2021-11-12 23:43:16,537 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:43:16,537 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938781460] [2021-11-12 23:43:16,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:43:16,537 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:43:16,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:43:16,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:43:16,970 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:43:16,970 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938781460] [2021-11-12 23:43:16,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938781460] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:43:16,970 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:43:16,971 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-12 23:43:16,971 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706179773] [2021-11-12 23:43:16,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:43:16,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:43:16,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:43:16,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:43:16,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:43:16,973 INFO L87 Difference]: Start difference. First operand 44420 states and 61762 transitions. Second operand has 5 states, 5 states have (on average 56.6) internal successors, (283), 4 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) [2021-11-12 23:43:22,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:43:22,448 INFO L93 Difference]: Finished difference Result 129759 states and 179925 transitions. [2021-11-12 23:43:22,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:43:22,449 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 56.6) internal successors, (283), 4 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) Word has length 283 [2021-11-12 23:43:22,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:43:22,620 INFO L225 Difference]: With dead ends: 129759 [2021-11-12 23:43:22,620 INFO L226 Difference]: Without dead ends: 85539 [2021-11-12 23:43:22,664 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:43:22,665 INFO L933 BasicCegarLoop]: 1570 mSDtfsCounter, 3437 mSDsluCounter, 1010 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 286.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3437 SdHoareTripleChecker+Valid, 2534 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.39ms SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 362.02ms IncrementalHoareTripleChecker+Time [2021-11-12 23:43:22,667 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3437 Valid, 2534 Invalid, 193 Unknown, 0 Unchecked, 13.39ms Time], IncrementalHoareTripleChecker [21 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 362.02ms Time] [2021-11-12 23:43:22,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85539 states. [2021-11-12 23:43:27,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85539 to 85469. [2021-11-12 23:43:27,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85469 states, 85457 states have (on average 1.3805890681863393) internal successors, (117981), 85468 states have internal predecessors, (117981), 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) [2021-11-12 23:43:28,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85469 states to 85469 states and 117981 transitions. [2021-11-12 23:43:28,017 INFO L78 Accepts]: Start accepts. Automaton has 85469 states and 117981 transitions. Word has length 283 [2021-11-12 23:43:28,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:43:28,017 INFO L470 AbstractCegarLoop]: Abstraction has 85469 states and 117981 transitions. [2021-11-12 23:43:28,018 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 56.6) internal successors, (283), 4 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) [2021-11-12 23:43:28,018 INFO L276 IsEmpty]: Start isEmpty. Operand 85469 states and 117981 transitions. [2021-11-12 23:43:28,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2021-11-12 23:43:28,119 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:43:28,120 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:43:28,122 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-12 23:43:28,123 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-12 23:43:28,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:43:28,124 INFO L85 PathProgramCache]: Analyzing trace with hash 583734819, now seen corresponding path program 1 times [2021-11-12 23:43:28,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:43:28,125 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102407893] [2021-11-12 23:43:28,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:43:28,125 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:43:28,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:43:28,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:43:28,802 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:43:28,802 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102407893] [2021-11-12 23:43:28,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102407893] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:43:28,802 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:43:28,803 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-12 23:43:28,803 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629263703] [2021-11-12 23:43:28,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:43:28,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:43:28,804 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:43:28,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:43:28,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:43:28,805 INFO L87 Difference]: Start difference. First operand 85469 states and 117981 transitions. Second operand has 4 states, 4 states have (on average 71.0) internal successors, (284), 3 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) [2021-11-12 23:43:37,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:43:37,738 INFO L93 Difference]: Finished difference Result 250519 states and 344857 transitions. [2021-11-12 23:43:37,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:43:37,739 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 71.0) internal successors, (284), 3 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) Word has length 284 [2021-11-12 23:43:37,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:43:38,075 INFO L225 Difference]: With dead ends: 250519 [2021-11-12 23:43:38,075 INFO L226 Difference]: Without dead ends: 167314 [2021-11-12 23:43:38,166 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:43:38,167 INFO L933 BasicCegarLoop]: 1567 mSDtfsCounter, 2393 mSDsluCounter, 1009 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 265.47ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2393 SdHoareTripleChecker+Valid, 2535 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.85ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 312.67ms IncrementalHoareTripleChecker+Time [2021-11-12 23:43:38,168 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2393 Valid, 2535 Invalid, 179 Unknown, 0 Unchecked, 8.85ms Time], IncrementalHoareTripleChecker [11 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 312.67ms Time] [2021-11-12 23:43:38,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167314 states.