./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08602a23-2589-41a4-9e2c-bf5b83d57b7b/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08602a23-2589-41a4-9e2c-bf5b83d57b7b/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08602a23-2589-41a4-9e2c-bf5b83d57b7b/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08602a23-2589-41a4-9e2c-bf5b83d57b7b/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08602a23-2589-41a4-9e2c-bf5b83d57b7b/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08602a23-2589-41a4-9e2c-bf5b83d57b7b/bin/utaipan-7li7fVZpFI --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 1538db88747c173720a51ea136bd420db033fa3c052c219d34d6c24c09240f56 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 02:06:08,446 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:06:08,448 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:06:08,477 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:06:08,478 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:06:08,479 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:06:08,481 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:06:08,483 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:06:08,484 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:06:08,485 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:06:08,486 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:06:08,488 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:06:08,488 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:06:08,489 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:06:08,491 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:06:08,492 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:06:08,493 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:06:08,494 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:06:08,496 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:06:08,497 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:06:08,499 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:06:08,500 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:06:08,502 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:06:08,503 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:06:08,506 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:06:08,507 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:06:08,507 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:06:08,508 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:06:08,509 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:06:08,510 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:06:08,511 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:06:08,511 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:06:08,512 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:06:08,513 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:06:08,514 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:06:08,515 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:06:08,516 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:06:08,516 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:06:08,516 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:06:08,517 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:06:08,518 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:06:08,523 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08602a23-2589-41a4-9e2c-bf5b83d57b7b/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 02:06:08,565 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:06:08,566 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:06:08,566 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:06:08,567 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:06:08,567 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:06:08,568 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:06:08,568 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:06:08,568 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:06:08,569 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:06:08,569 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:06:08,569 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:06:08,570 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:06:08,570 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:06:08,570 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:06:08,571 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:06:08,571 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:06:08,571 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:06:08,572 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:06:08,573 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:06:08,573 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 02:06:08,573 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:06:08,573 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 02:06:08,576 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:06:08,579 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:06:08,579 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:06:08,579 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:06:08,579 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 02:06:08,580 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:06:08,581 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:06:08,581 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:06:08,581 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:06:08,582 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:06:08,582 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:06:08,583 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:06:08,583 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:06:08,583 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:06:08,584 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:06:08,585 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:06:08,585 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:06:08,585 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:06:08,585 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:06:08,586 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_08602a23-2589-41a4-9e2c-bf5b83d57b7b/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08602a23-2589-41a4-9e2c-bf5b83d57b7b/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1538db88747c173720a51ea136bd420db033fa3c052c219d34d6c24c09240f56 [2022-11-03 02:06:08,898 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:06:08,922 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:06:08,924 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:06:08,926 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:06:08,927 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:06:08,928 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08602a23-2589-41a4-9e2c-bf5b83d57b7b/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2022-11-03 02:06:09,026 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08602a23-2589-41a4-9e2c-bf5b83d57b7b/bin/utaipan-7li7fVZpFI/data/c32a31639/e3d7e8709c204c0aa37575556fe5ec64/FLAG69b96712e [2022-11-03 02:06:09,798 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:06:09,799 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08602a23-2589-41a4-9e2c-bf5b83d57b7b/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2022-11-03 02:06:09,832 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08602a23-2589-41a4-9e2c-bf5b83d57b7b/bin/utaipan-7li7fVZpFI/data/c32a31639/e3d7e8709c204c0aa37575556fe5ec64/FLAG69b96712e [2022-11-03 02:06:09,933 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08602a23-2589-41a4-9e2c-bf5b83d57b7b/bin/utaipan-7li7fVZpFI/data/c32a31639/e3d7e8709c204c0aa37575556fe5ec64 [2022-11-03 02:06:09,936 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:06:09,937 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:06:09,939 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:06:09,939 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:06:09,946 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:06:09,947 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:06:09" (1/1) ... [2022-11-03 02:06:09,948 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@676f0c1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:06:09, skipping insertion in model container [2022-11-03 02:06:09,948 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:06:09" (1/1) ... [2022-11-03 02:06:09,957 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:06:10,138 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:06:11,014 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08602a23-2589-41a4-9e2c-bf5b83d57b7b/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[31348,31361] [2022-11-03 02:06:11,054 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08602a23-2589-41a4-9e2c-bf5b83d57b7b/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[32238,32251] [2022-11-03 02:06:11,109 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08602a23-2589-41a4-9e2c-bf5b83d57b7b/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[33897,33910] [2022-11-03 02:06:11,141 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08602a23-2589-41a4-9e2c-bf5b83d57b7b/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[34787,34800] [2022-11-03 02:06:11,223 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08602a23-2589-41a4-9e2c-bf5b83d57b7b/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[37218,37231] [2022-11-03 02:06:11,257 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08602a23-2589-41a4-9e2c-bf5b83d57b7b/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[38111,38124] [2022-11-03 02:06:11,311 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08602a23-2589-41a4-9e2c-bf5b83d57b7b/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[39773,39786] [2022-11-03 02:06:11,353 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08602a23-2589-41a4-9e2c-bf5b83d57b7b/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[41134,41147] [2022-11-03 02:06:11,617 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08602a23-2589-41a4-9e2c-bf5b83d57b7b/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[54998,55011] [2022-11-03 02:06:11,637 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08602a23-2589-41a4-9e2c-bf5b83d57b7b/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[55891,55904] [2022-11-03 02:06:11,668 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08602a23-2589-41a4-9e2c-bf5b83d57b7b/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[57553,57566] [2022-11-03 02:06:11,736 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08602a23-2589-41a4-9e2c-bf5b83d57b7b/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[61710,61723] [2022-11-03 02:06:11,885 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:06:11,898 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:06:12,174 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08602a23-2589-41a4-9e2c-bf5b83d57b7b/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[31348,31361] [2022-11-03 02:06:12,193 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08602a23-2589-41a4-9e2c-bf5b83d57b7b/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[32238,32251] [2022-11-03 02:06:12,222 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08602a23-2589-41a4-9e2c-bf5b83d57b7b/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[33897,33910] [2022-11-03 02:06:12,240 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08602a23-2589-41a4-9e2c-bf5b83d57b7b/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[34787,34800] [2022-11-03 02:06:12,275 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08602a23-2589-41a4-9e2c-bf5b83d57b7b/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[37218,37231] [2022-11-03 02:06:12,292 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08602a23-2589-41a4-9e2c-bf5b83d57b7b/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[38111,38124] [2022-11-03 02:06:12,320 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08602a23-2589-41a4-9e2c-bf5b83d57b7b/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[39773,39786] [2022-11-03 02:06:12,345 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08602a23-2589-41a4-9e2c-bf5b83d57b7b/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[41134,41147] [2022-11-03 02:06:12,520 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08602a23-2589-41a4-9e2c-bf5b83d57b7b/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[54998,55011] [2022-11-03 02:06:12,545 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08602a23-2589-41a4-9e2c-bf5b83d57b7b/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[55891,55904] [2022-11-03 02:06:12,590 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08602a23-2589-41a4-9e2c-bf5b83d57b7b/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[57553,57566] [2022-11-03 02:06:12,711 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08602a23-2589-41a4-9e2c-bf5b83d57b7b/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[61710,61723] [2022-11-03 02:06:12,859 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:06:12,900 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:06:12,901 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:06:12 WrapperNode [2022-11-03 02:06:12,901 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:06:12,902 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:06:12,902 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:06:12,902 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:06:12,909 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:06:12" (1/1) ... [2022-11-03 02:06:12,942 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:06:12" (1/1) ... [2022-11-03 02:06:13,046 INFO L138 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 3772 [2022-11-03 02:06:13,047 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:06:13,048 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:06:13,048 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:06:13,048 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:06:13,059 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:06:12" (1/1) ... [2022-11-03 02:06:13,060 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:06:12" (1/1) ... [2022-11-03 02:06:13,071 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:06:12" (1/1) ... [2022-11-03 02:06:13,071 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:06:12" (1/1) ... [2022-11-03 02:06:13,110 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:06:12" (1/1) ... [2022-11-03 02:06:13,149 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:06:12" (1/1) ... [2022-11-03 02:06:13,156 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:06:12" (1/1) ... [2022-11-03 02:06:13,177 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:06:12" (1/1) ... [2022-11-03 02:06:13,210 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:06:13,212 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:06:13,212 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:06:13,212 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:06:13,213 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:06:12" (1/1) ... [2022-11-03 02:06:13,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:06:13,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08602a23-2589-41a4-9e2c-bf5b83d57b7b/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:06:13,255 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08602a23-2589-41a4-9e2c-bf5b83d57b7b/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:06:13,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08602a23-2589-41a4-9e2c-bf5b83d57b7b/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:06:13,301 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:06:13,301 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:06:13,302 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:06:13,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:06:13,524 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:06:13,527 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:06:16,638 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:06:17,870 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:06:17,870 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-03 02:06:17,876 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:06:17 BoogieIcfgContainer [2022-11-03 02:06:17,877 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:06:17,881 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:06:17,881 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:06:17,886 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:06:17,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:06:09" (1/3) ... [2022-11-03 02:06:17,887 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61b359b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:06:17, skipping insertion in model container [2022-11-03 02:06:17,888 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:06:12" (2/3) ... [2022-11-03 02:06:17,888 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61b359b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:06:17, skipping insertion in model container [2022-11-03 02:06:17,888 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:06:17" (3/3) ... [2022-11-03 02:06:17,894 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2022-11-03 02:06:17,916 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:06:17,917 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-11-03 02:06:18,010 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:06:18,018 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@58f3003, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:06:18,018 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2022-11-03 02:06:18,027 INFO L276 IsEmpty]: Start isEmpty. Operand has 688 states, 675 states have (on average 1.7422222222222221) internal successors, (1176), 687 states have internal predecessors, (1176), 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) [2022-11-03 02:06:18,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2022-11-03 02:06:18,052 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:06:18,053 INFO L195 NwaCegarLoop]: 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] [2022-11-03 02:06:18,054 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-11-03 02:06:18,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:06:18,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1370923563, now seen corresponding path program 1 times [2022-11-03 02:06:18,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:06:18,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328744081] [2022-11-03 02:06:18,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:06:18,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:06:19,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:06:22,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:06:22,639 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:06:22,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328744081] [2022-11-03 02:06:22,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328744081] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:06:22,643 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:06:22,644 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:06:22,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880911923] [2022-11-03 02:06:22,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:06:22,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:06:22,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:06:22,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:06:22,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:06:22,704 INFO L87 Difference]: Start difference. First operand has 688 states, 675 states have (on average 1.7422222222222221) internal successors, (1176), 687 states have internal predecessors, (1176), 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 6 states, 6 states have (on average 41.5) internal successors, (249), 6 states have internal predecessors, (249), 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) [2022-11-03 02:06:24,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:06:24,125 INFO L93 Difference]: Finished difference Result 1870 states and 3181 transitions. [2022-11-03 02:06:24,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:06:24,129 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 41.5) internal successors, (249), 6 states have internal predecessors, (249), 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 249 [2022-11-03 02:06:24,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:06:24,158 INFO L225 Difference]: With dead ends: 1870 [2022-11-03 02:06:24,158 INFO L226 Difference]: Without dead ends: 1439 [2022-11-03 02:06:24,169 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:06:24,176 INFO L413 NwaCegarLoop]: 1220 mSDtfsCounter, 1942 mSDsluCounter, 3701 mSDsCounter, 0 mSdLazyCounter, 577 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1942 SdHoareTripleChecker+Valid, 4756 SdHoareTripleChecker+Invalid, 610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:06:24,179 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1942 Valid, 4756 Invalid, 610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 577 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-03 02:06:24,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1439 states. [2022-11-03 02:06:24,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1439 to 1307. [2022-11-03 02:06:24,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1307 states, 1295 states have (on average 1.4254826254826254) internal successors, (1846), 1306 states have internal predecessors, (1846), 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) [2022-11-03 02:06:24,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1307 states to 1307 states and 1846 transitions. [2022-11-03 02:06:24,406 INFO L78 Accepts]: Start accepts. Automaton has 1307 states and 1846 transitions. Word has length 249 [2022-11-03 02:06:24,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:06:24,411 INFO L495 AbstractCegarLoop]: Abstraction has 1307 states and 1846 transitions. [2022-11-03 02:06:24,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 41.5) internal successors, (249), 6 states have internal predecessors, (249), 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) [2022-11-03 02:06:24,412 INFO L276 IsEmpty]: Start isEmpty. Operand 1307 states and 1846 transitions. [2022-11-03 02:06:24,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2022-11-03 02:06:24,424 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:06:24,424 INFO L195 NwaCegarLoop]: 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] [2022-11-03 02:06:24,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:06:24,425 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-11-03 02:06:24,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:06:24,426 INFO L85 PathProgramCache]: Analyzing trace with hash 1854204174, now seen corresponding path program 1 times [2022-11-03 02:06:24,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:06:24,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065250860] [2022-11-03 02:06:24,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:06:24,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:06:25,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:06:25,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:06:25,703 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:06:25,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065250860] [2022-11-03 02:06:25,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065250860] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:06:25,705 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:06:25,709 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:06:25,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537844114] [2022-11-03 02:06:25,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:06:25,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:06:25,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:06:25,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:06:25,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:06:25,716 INFO L87 Difference]: Start difference. First operand 1307 states and 1846 transitions. Second operand has 4 states, 4 states have (on average 62.25) internal successors, (249), 3 states have internal predecessors, (249), 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) [2022-11-03 02:06:26,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:06:26,614 INFO L93 Difference]: Finished difference Result 3865 states and 5451 transitions. [2022-11-03 02:06:26,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:06:26,616 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 62.25) internal successors, (249), 3 states have internal predecessors, (249), 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 249 [2022-11-03 02:06:26,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:06:26,628 INFO L225 Difference]: With dead ends: 3865 [2022-11-03 02:06:26,629 INFO L226 Difference]: Without dead ends: 2567 [2022-11-03 02:06:26,634 INFO L412 NwaCegarLoop]: 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 [2022-11-03 02:06:26,636 INFO L413 NwaCegarLoop]: 1496 mSDtfsCounter, 1973 mSDsluCounter, 877 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1973 SdHoareTripleChecker+Valid, 2322 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:06:26,636 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1973 Valid, 2322 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 02:06:26,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2567 states. [2022-11-03 02:06:27,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2567 to 2494. [2022-11-03 02:06:27,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2494 states, 2482 states have (on average 1.4250604351329572) internal successors, (3537), 2493 states have internal predecessors, (3537), 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) [2022-11-03 02:06:27,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2494 states to 2494 states and 3537 transitions. [2022-11-03 02:06:27,017 INFO L78 Accepts]: Start accepts. Automaton has 2494 states and 3537 transitions. Word has length 249 [2022-11-03 02:06:27,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:06:27,018 INFO L495 AbstractCegarLoop]: Abstraction has 2494 states and 3537 transitions. [2022-11-03 02:06:27,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 62.25) internal successors, (249), 3 states have internal predecessors, (249), 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) [2022-11-03 02:06:27,019 INFO L276 IsEmpty]: Start isEmpty. Operand 2494 states and 3537 transitions. [2022-11-03 02:06:27,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2022-11-03 02:06:27,027 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:06:27,027 INFO L195 NwaCegarLoop]: 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] [2022-11-03 02:06:27,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 02:06:27,028 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-11-03 02:06:27,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:06:27,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1661714778, now seen corresponding path program 1 times [2022-11-03 02:06:27,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:06:27,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252239235] [2022-11-03 02:06:27,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:06:27,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:06:27,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:06:27,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:06:27,350 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:06:27,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252239235] [2022-11-03 02:06:27,351 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252239235] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:06:27,352 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:06:27,352 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:06:27,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466823542] [2022-11-03 02:06:27,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:06:27,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:06:27,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:06:27,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:06:27,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:06:27,355 INFO L87 Difference]: Start difference. First operand 2494 states and 3537 transitions. Second operand has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 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) [2022-11-03 02:06:28,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:06:28,421 INFO L93 Difference]: Finished difference Result 7265 states and 10277 transitions. [2022-11-03 02:06:28,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:06:28,422 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 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 251 [2022-11-03 02:06:28,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:06:28,443 INFO L225 Difference]: With dead ends: 7265 [2022-11-03 02:06:28,443 INFO L226 Difference]: Without dead ends: 4892 [2022-11-03 02:06:28,448 INFO L412 NwaCegarLoop]: 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 [2022-11-03 02:06:28,451 INFO L413 NwaCegarLoop]: 1650 mSDtfsCounter, 822 mSDsluCounter, 889 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 822 SdHoareTripleChecker+Valid, 2490 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:06:28,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [822 Valid, 2490 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 02:06:28,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4892 states. [2022-11-03 02:06:29,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4892 to 4819. [2022-11-03 02:06:29,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4819 states, 4807 states have (on average 1.4227168712294571) internal successors, (6839), 4818 states have internal predecessors, (6839), 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) [2022-11-03 02:06:29,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4819 states to 4819 states and 6839 transitions. [2022-11-03 02:06:29,067 INFO L78 Accepts]: Start accepts. Automaton has 4819 states and 6839 transitions. Word has length 251 [2022-11-03 02:06:29,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:06:29,068 INFO L495 AbstractCegarLoop]: Abstraction has 4819 states and 6839 transitions. [2022-11-03 02:06:29,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 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) [2022-11-03 02:06:29,068 INFO L276 IsEmpty]: Start isEmpty. Operand 4819 states and 6839 transitions. [2022-11-03 02:06:29,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2022-11-03 02:06:29,078 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:06:29,079 INFO L195 NwaCegarLoop]: 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] [2022-11-03 02:06:29,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 02:06:29,079 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-11-03 02:06:29,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:06:29,080 INFO L85 PathProgramCache]: Analyzing trace with hash 164460886, now seen corresponding path program 1 times [2022-11-03 02:06:29,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:06:29,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261750538] [2022-11-03 02:06:29,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:06:29,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:06:29,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:06:29,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:06:29,282 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:06:29,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261750538] [2022-11-03 02:06:29,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261750538] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:06:29,284 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:06:29,284 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:06:29,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552672829] [2022-11-03 02:06:29,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:06:29,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:06:29,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:06:29,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:06:29,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:06:29,287 INFO L87 Difference]: Start difference. First operand 4819 states and 6839 transitions. Second operand has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 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) [2022-11-03 02:06:30,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:06:30,889 INFO L93 Difference]: Finished difference Result 14305 states and 20284 transitions. [2022-11-03 02:06:30,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:06:30,890 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 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 251 [2022-11-03 02:06:30,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:06:30,933 INFO L225 Difference]: With dead ends: 14305 [2022-11-03 02:06:30,933 INFO L226 Difference]: Without dead ends: 9618 [2022-11-03 02:06:30,944 INFO L412 NwaCegarLoop]: 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 [2022-11-03 02:06:30,947 INFO L413 NwaCegarLoop]: 1740 mSDtfsCounter, 922 mSDsluCounter, 922 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 922 SdHoareTripleChecker+Valid, 2608 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:06:30,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [922 Valid, 2608 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:06:30,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9618 states. [2022-11-03 02:06:31,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9618 to 4822. [2022-11-03 02:06:31,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4822 states, 4810 states have (on average 1.4224532224532225) internal successors, (6842), 4821 states have internal predecessors, (6842), 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) [2022-11-03 02:06:31,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4822 states to 4822 states and 6842 transitions. [2022-11-03 02:06:31,850 INFO L78 Accepts]: Start accepts. Automaton has 4822 states and 6842 transitions. Word has length 251 [2022-11-03 02:06:31,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:06:31,851 INFO L495 AbstractCegarLoop]: Abstraction has 4822 states and 6842 transitions. [2022-11-03 02:06:31,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 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) [2022-11-03 02:06:31,852 INFO L276 IsEmpty]: Start isEmpty. Operand 4822 states and 6842 transitions. [2022-11-03 02:06:31,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2022-11-03 02:06:31,861 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:06:31,862 INFO L195 NwaCegarLoop]: 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] [2022-11-03 02:06:31,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 02:06:31,862 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-11-03 02:06:31,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:06:31,863 INFO L85 PathProgramCache]: Analyzing trace with hash -1248830403, now seen corresponding path program 1 times [2022-11-03 02:06:31,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:06:31,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598823949] [2022-11-03 02:06:31,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:06:31,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:06:32,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:06:32,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:06:32,980 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:06:32,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598823949] [2022-11-03 02:06:32,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598823949] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:06:32,983 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:06:32,983 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:06:32,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455084495] [2022-11-03 02:06:32,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:06:32,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:06:32,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:06:32,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:06:32,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:06:32,993 INFO L87 Difference]: Start difference. First operand 4822 states and 6842 transitions. Second operand has 5 states, 5 states have (on average 50.4) internal successors, (252), 4 states have internal predecessors, (252), 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) [2022-11-03 02:06:34,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:06:34,444 INFO L93 Difference]: Finished difference Result 12152 states and 17178 transitions. [2022-11-03 02:06:34,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:06:34,445 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 50.4) internal successors, (252), 4 states have internal predecessors, (252), 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 252 [2022-11-03 02:06:34,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:06:34,476 INFO L225 Difference]: With dead ends: 12152 [2022-11-03 02:06:34,476 INFO L226 Difference]: Without dead ends: 7345 [2022-11-03 02:06:34,484 INFO L412 NwaCegarLoop]: 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 [2022-11-03 02:06:34,485 INFO L413 NwaCegarLoop]: 1491 mSDtfsCounter, 2887 mSDsluCounter, 878 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2887 SdHoareTripleChecker+Valid, 2321 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:06:34,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2887 Valid, 2321 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 02:06:34,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7345 states. [2022-11-03 02:06:35,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7345 to 6944. [2022-11-03 02:06:35,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6944 states, 6932 states have (on average 1.4017599538372765) internal successors, (9717), 6943 states have internal predecessors, (9717), 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) [2022-11-03 02:06:35,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6944 states to 6944 states and 9717 transitions. [2022-11-03 02:06:35,578 INFO L78 Accepts]: Start accepts. Automaton has 6944 states and 9717 transitions. Word has length 252 [2022-11-03 02:06:35,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:06:35,579 INFO L495 AbstractCegarLoop]: Abstraction has 6944 states and 9717 transitions. [2022-11-03 02:06:35,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 50.4) internal successors, (252), 4 states have internal predecessors, (252), 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) [2022-11-03 02:06:35,579 INFO L276 IsEmpty]: Start isEmpty. Operand 6944 states and 9717 transitions. [2022-11-03 02:06:35,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2022-11-03 02:06:35,594 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:06:35,594 INFO L195 NwaCegarLoop]: 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] [2022-11-03 02:06:35,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 02:06:35,595 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-11-03 02:06:35,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:06:35,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1871068032, now seen corresponding path program 1 times [2022-11-03 02:06:35,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:06:35,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394364732] [2022-11-03 02:06:35,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:06:35,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:06:35,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:06:37,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:06:37,964 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:06:37,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394364732] [2022-11-03 02:06:37,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394364732] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:06:37,965 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:06:37,965 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:06:37,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197073563] [2022-11-03 02:06:37,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:06:37,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:06:37,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:06:37,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:06:37,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:06:37,967 INFO L87 Difference]: Start difference. First operand 6944 states and 9717 transitions. Second operand has 6 states, 6 states have (on average 42.166666666666664) internal successors, (253), 6 states have internal predecessors, (253), 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) [2022-11-03 02:06:41,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:06:41,143 INFO L93 Difference]: Finished difference Result 17742 states and 25077 transitions. [2022-11-03 02:06:41,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:06:41,144 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 42.166666666666664) internal successors, (253), 6 states have internal predecessors, (253), 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 253 [2022-11-03 02:06:41,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:06:41,194 INFO L225 Difference]: With dead ends: 17742 [2022-11-03 02:06:41,195 INFO L226 Difference]: Without dead ends: 13121 [2022-11-03 02:06:41,204 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:06:41,206 INFO L413 NwaCegarLoop]: 992 mSDtfsCounter, 1616 mSDsluCounter, 2287 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1616 SdHoareTripleChecker+Valid, 3161 SdHoareTripleChecker+Invalid, 429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:06:41,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1616 Valid, 3161 Invalid, 429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 408 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-03 02:06:41,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13121 states. [2022-11-03 02:06:43,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13121 to 12066. [2022-11-03 02:06:43,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12066 states, 12054 states have (on average 1.4129749460759913) internal successors, (17032), 12065 states have internal predecessors, (17032), 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) [2022-11-03 02:06:43,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12066 states to 12066 states and 17032 transitions. [2022-11-03 02:06:43,220 INFO L78 Accepts]: Start accepts. Automaton has 12066 states and 17032 transitions. Word has length 253 [2022-11-03 02:06:43,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:06:43,222 INFO L495 AbstractCegarLoop]: Abstraction has 12066 states and 17032 transitions. [2022-11-03 02:06:43,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 42.166666666666664) internal successors, (253), 6 states have internal predecessors, (253), 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) [2022-11-03 02:06:43,223 INFO L276 IsEmpty]: Start isEmpty. Operand 12066 states and 17032 transitions. [2022-11-03 02:06:43,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2022-11-03 02:06:43,250 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:06:43,250 INFO L195 NwaCegarLoop]: 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] [2022-11-03 02:06:43,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 02:06:43,251 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-11-03 02:06:43,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:06:43,252 INFO L85 PathProgramCache]: Analyzing trace with hash 1557098385, now seen corresponding path program 1 times [2022-11-03 02:06:43,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:06:43,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330614944] [2022-11-03 02:06:43,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:06:43,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:06:43,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:06:44,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:06:44,530 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:06:44,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330614944] [2022-11-03 02:06:44,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330614944] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:06:44,531 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:06:44,531 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:06:44,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482851080] [2022-11-03 02:06:44,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:06:44,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:06:44,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:06:44,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:06:44,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:06:44,535 INFO L87 Difference]: Start difference. First operand 12066 states and 17032 transitions. Second operand has 4 states, 4 states have (on average 63.25) internal successors, (253), 3 states have internal predecessors, (253), 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) [2022-11-03 02:06:48,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:06:48,596 INFO L93 Difference]: Finished difference Result 35578 states and 50167 transitions. [2022-11-03 02:06:48,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:06:48,597 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 63.25) internal successors, (253), 3 states have internal predecessors, (253), 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 253 [2022-11-03 02:06:48,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:06:48,666 INFO L225 Difference]: With dead ends: 35578 [2022-11-03 02:06:48,667 INFO L226 Difference]: Without dead ends: 23650 [2022-11-03 02:06:48,681 INFO L412 NwaCegarLoop]: 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 [2022-11-03 02:06:48,682 INFO L413 NwaCegarLoop]: 1484 mSDtfsCounter, 1959 mSDsluCounter, 877 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1959 SdHoareTripleChecker+Valid, 2318 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:06:48,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1959 Valid, 2318 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 02:06:48,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23650 states. [2022-11-03 02:06:52,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23650 to 23511. [2022-11-03 02:06:52,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23511 states, 23499 states have (on average 1.407038597387123) internal successors, (33064), 23510 states have internal predecessors, (33064), 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) [2022-11-03 02:06:52,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23511 states to 23511 states and 33064 transitions. [2022-11-03 02:06:52,669 INFO L78 Accepts]: Start accepts. Automaton has 23511 states and 33064 transitions. Word has length 253 [2022-11-03 02:06:52,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:06:52,670 INFO L495 AbstractCegarLoop]: Abstraction has 23511 states and 33064 transitions. [2022-11-03 02:06:52,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 63.25) internal successors, (253), 3 states have internal predecessors, (253), 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) [2022-11-03 02:06:52,670 INFO L276 IsEmpty]: Start isEmpty. Operand 23511 states and 33064 transitions. [2022-11-03 02:06:52,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2022-11-03 02:06:52,706 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:06:52,707 INFO L195 NwaCegarLoop]: 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] [2022-11-03 02:06:52,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 02:06:52,707 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-11-03 02:06:52,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:06:52,708 INFO L85 PathProgramCache]: Analyzing trace with hash -1175008678, now seen corresponding path program 1 times [2022-11-03 02:06:52,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:06:52,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669567132] [2022-11-03 02:06:52,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:06:52,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:06:53,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:06:53,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:06:53,538 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:06:53,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669567132] [2022-11-03 02:06:53,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669567132] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:06:53,538 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:06:53,540 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:06:53,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143881853] [2022-11-03 02:06:53,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:06:53,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:06:53,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:06:53,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:06:53,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:06:53,543 INFO L87 Difference]: Start difference. First operand 23511 states and 33064 transitions. Second operand has 4 states, 4 states have (on average 63.75) internal successors, (255), 3 states have internal predecessors, (255), 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) [2022-11-03 02:06:59,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:06:59,590 INFO L93 Difference]: Finished difference Result 60615 states and 85228 transitions. [2022-11-03 02:06:59,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:06:59,591 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 63.75) internal successors, (255), 3 states have internal predecessors, (255), 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 255 [2022-11-03 02:06:59,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:06:59,689 INFO L225 Difference]: With dead ends: 60615 [2022-11-03 02:06:59,689 INFO L226 Difference]: Without dead ends: 37246 [2022-11-03 02:06:59,723 INFO L412 NwaCegarLoop]: 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 [2022-11-03 02:06:59,724 INFO L413 NwaCegarLoop]: 1469 mSDtfsCounter, 1940 mSDsluCounter, 878 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1940 SdHoareTripleChecker+Valid, 2295 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:06:59,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1940 Valid, 2295 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 02:06:59,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37246 states. [2022-11-03 02:07:04,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37246 to 35877. [2022-11-03 02:07:04,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35877 states, 35865 states have (on average 1.394925414749756) internal successors, (50029), 35876 states have internal predecessors, (50029), 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) [2022-11-03 02:07:04,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35877 states to 35877 states and 50029 transitions. [2022-11-03 02:07:04,817 INFO L78 Accepts]: Start accepts. Automaton has 35877 states and 50029 transitions. Word has length 255 [2022-11-03 02:07:04,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:07:04,818 INFO L495 AbstractCegarLoop]: Abstraction has 35877 states and 50029 transitions. [2022-11-03 02:07:04,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 63.75) internal successors, (255), 3 states have internal predecessors, (255), 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) [2022-11-03 02:07:04,818 INFO L276 IsEmpty]: Start isEmpty. Operand 35877 states and 50029 transitions. [2022-11-03 02:07:04,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2022-11-03 02:07:04,868 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:07:04,869 INFO L195 NwaCegarLoop]: 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] [2022-11-03 02:07:04,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-03 02:07:04,869 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-11-03 02:07:04,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:07:04,870 INFO L85 PathProgramCache]: Analyzing trace with hash -1182008867, now seen corresponding path program 1 times [2022-11-03 02:07:04,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:07:04,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070920740] [2022-11-03 02:07:04,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:07:04,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:07:04,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:07:05,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:07:05,054 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:07:05,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070920740] [2022-11-03 02:07:05,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070920740] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:07:05,055 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:07:05,055 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:07:05,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551675474] [2022-11-03 02:07:05,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:07:05,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:07:05,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:07:05,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:07:05,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:07:05,058 INFO L87 Difference]: Start difference. First operand 35877 states and 50029 transitions. Second operand has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 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) [2022-11-03 02:07:13,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:07:13,643 INFO L93 Difference]: Finished difference Result 97296 states and 135601 transitions. [2022-11-03 02:07:13,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:07:13,644 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 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 257 [2022-11-03 02:07:13,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:07:13,784 INFO L225 Difference]: With dead ends: 97296 [2022-11-03 02:07:13,784 INFO L226 Difference]: Without dead ends: 62981 [2022-11-03 02:07:13,827 INFO L412 NwaCegarLoop]: 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 [2022-11-03 02:07:13,828 INFO L413 NwaCegarLoop]: 1663 mSDtfsCounter, 806 mSDsluCounter, 890 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 806 SdHoareTripleChecker+Valid, 2503 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:07:13,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [806 Valid, 2503 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:07:13,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62981 states.