./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-divine/divinefifo_1w1r.i --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_5e5f6adc-d985-4909-ab28-900e3f737a84/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5f6adc-d985-4909-ab28-900e3f737a84/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_5e5f6adc-d985-4909-ab28-900e3f737a84/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5f6adc-d985-4909-ab28-900e3f737a84/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-divine/divinefifo_1w1r.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5f6adc-d985-4909-ab28-900e3f737a84/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_5e5f6adc-d985-4909-ab28-900e3f737a84/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 43c4691e367ff0d8a9949fa90f15eddbc091ab75ed1546de74dafe83c2376639 --- 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 03:34:23,798 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 03:34:23,801 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 03:34:23,849 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 03:34:23,850 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 03:34:23,854 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 03:34:23,859 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 03:34:23,863 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 03:34:23,864 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 03:34:23,867 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 03:34:23,868 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 03:34:23,869 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 03:34:23,870 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 03:34:23,871 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 03:34:23,872 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 03:34:23,873 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 03:34:23,874 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 03:34:23,875 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 03:34:23,881 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 03:34:23,888 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 03:34:23,892 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 03:34:23,896 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 03:34:23,900 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 03:34:23,901 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 03:34:23,909 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 03:34:23,910 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 03:34:23,910 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 03:34:23,912 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 03:34:23,913 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 03:34:23,914 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 03:34:23,914 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 03:34:23,916 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 03:34:23,917 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 03:34:23,919 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 03:34:23,920 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 03:34:23,920 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 03:34:23,921 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 03:34:23,922 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 03:34:23,922 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 03:34:23,923 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 03:34:23,924 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 03:34:23,926 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5f6adc-d985-4909-ab28-900e3f737a84/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 03:34:23,960 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 03:34:23,960 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 03:34:23,961 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 03:34:23,961 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 03:34:23,962 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 03:34:23,962 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 03:34:23,963 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 03:34:23,963 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 03:34:23,963 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 03:34:23,963 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 03:34:23,964 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 03:34:23,965 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 03:34:23,965 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 03:34:23,965 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 03:34:23,965 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 03:34:23,966 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 03:34:23,966 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 03:34:23,966 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 03:34:23,967 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 03:34:23,967 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 03:34:23,967 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 03:34:23,968 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 03:34:23,968 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 03:34:23,969 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 03:34:23,970 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 03:34:23,970 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 03:34:23,970 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 03:34:23,970 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 03:34:23,971 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 03:34:23,971 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 03:34:23,971 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 03:34:23,971 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 03:34:23,972 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:34:23,972 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 03:34:23,972 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 03:34:23,972 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 03:34:23,973 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 03:34:23,973 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 03:34:23,973 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 03:34:23,973 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 03:34:23,974 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 03:34:23,974 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_5e5f6adc-d985-4909-ab28-900e3f737a84/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5f6adc-d985-4909-ab28-900e3f737a84/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 43c4691e367ff0d8a9949fa90f15eddbc091ab75ed1546de74dafe83c2376639 [2022-11-03 03:34:24,231 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 03:34:24,255 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 03:34:24,258 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 03:34:24,259 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 03:34:24,260 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 03:34:24,262 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5f6adc-d985-4909-ab28-900e3f737a84/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/pthread-divine/divinefifo_1w1r.i [2022-11-03 03:34:24,338 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5f6adc-d985-4909-ab28-900e3f737a84/bin/utaipan-7li7fVZpFI/data/f17708c5d/b82a9a6965684fc08f4ff4333d901fa6/FLAG11e3444e5 [2022-11-03 03:34:24,944 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 03:34:24,947 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5f6adc-d985-4909-ab28-900e3f737a84/sv-benchmarks/c/pthread-divine/divinefifo_1w1r.i [2022-11-03 03:34:24,969 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5f6adc-d985-4909-ab28-900e3f737a84/bin/utaipan-7li7fVZpFI/data/f17708c5d/b82a9a6965684fc08f4ff4333d901fa6/FLAG11e3444e5 [2022-11-03 03:34:25,341 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5f6adc-d985-4909-ab28-900e3f737a84/bin/utaipan-7li7fVZpFI/data/f17708c5d/b82a9a6965684fc08f4ff4333d901fa6 [2022-11-03 03:34:25,343 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 03:34:25,345 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 03:34:25,346 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 03:34:25,346 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 03:34:25,355 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 03:34:25,356 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:34:25" (1/1) ... [2022-11-03 03:34:25,357 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@128a0bed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:34:25, skipping insertion in model container [2022-11-03 03:34:25,357 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:34:25" (1/1) ... [2022-11-03 03:34:25,366 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 03:34:25,439 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 03:34:25,600 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-03 03:34:26,037 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_5e5f6adc-d985-4909-ab28-900e3f737a84/sv-benchmarks/c/pthread-divine/divinefifo_1w1r.i[47275,47288] [2022-11-03 03:34:26,046 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_5e5f6adc-d985-4909-ab28-900e3f737a84/sv-benchmarks/c/pthread-divine/divinefifo_1w1r.i[47463,47476] [2022-11-03 03:34:26,070 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_5e5f6adc-d985-4909-ab28-900e3f737a84/sv-benchmarks/c/pthread-divine/divinefifo_1w1r.i[48230,48243] [2022-11-03 03:34:26,072 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_5e5f6adc-d985-4909-ab28-900e3f737a84/sv-benchmarks/c/pthread-divine/divinefifo_1w1r.i[48344,48357] [2022-11-03 03:34:26,086 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_5e5f6adc-d985-4909-ab28-900e3f737a84/sv-benchmarks/c/pthread-divine/divinefifo_1w1r.i[48781,48794] [2022-11-03 03:34:26,089 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_5e5f6adc-d985-4909-ab28-900e3f737a84/sv-benchmarks/c/pthread-divine/divinefifo_1w1r.i[48837,48850] [2022-11-03 03:34:26,108 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_5e5f6adc-d985-4909-ab28-900e3f737a84/sv-benchmarks/c/pthread-divine/divinefifo_1w1r.i[49349,49362] [2022-11-03 03:34:26,109 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_5e5f6adc-d985-4909-ab28-900e3f737a84/sv-benchmarks/c/pthread-divine/divinefifo_1w1r.i[49408,49421] [2022-11-03 03:34:26,111 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_5e5f6adc-d985-4909-ab28-900e3f737a84/sv-benchmarks/c/pthread-divine/divinefifo_1w1r.i[49487,49500] [2022-11-03 03:34:26,112 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:34:26,122 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 03:34:26,144 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-03 03:34:26,178 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_5e5f6adc-d985-4909-ab28-900e3f737a84/sv-benchmarks/c/pthread-divine/divinefifo_1w1r.i[47275,47288] [2022-11-03 03:34:26,189 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_5e5f6adc-d985-4909-ab28-900e3f737a84/sv-benchmarks/c/pthread-divine/divinefifo_1w1r.i[47463,47476] [2022-11-03 03:34:26,198 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_5e5f6adc-d985-4909-ab28-900e3f737a84/sv-benchmarks/c/pthread-divine/divinefifo_1w1r.i[48230,48243] [2022-11-03 03:34:26,201 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_5e5f6adc-d985-4909-ab28-900e3f737a84/sv-benchmarks/c/pthread-divine/divinefifo_1w1r.i[48344,48357] [2022-11-03 03:34:26,206 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5f6adc-d985-4909-ab28-900e3f737a84/sv-benchmarks/c/pthread-divine/divinefifo_1w1r.i[48781,48794] [2022-11-03 03:34:26,210 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_5e5f6adc-d985-4909-ab28-900e3f737a84/sv-benchmarks/c/pthread-divine/divinefifo_1w1r.i[48837,48850] [2022-11-03 03:34:26,215 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_5e5f6adc-d985-4909-ab28-900e3f737a84/sv-benchmarks/c/pthread-divine/divinefifo_1w1r.i[49349,49362] [2022-11-03 03:34:26,217 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_5e5f6adc-d985-4909-ab28-900e3f737a84/sv-benchmarks/c/pthread-divine/divinefifo_1w1r.i[49408,49421] [2022-11-03 03:34:26,223 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_5e5f6adc-d985-4909-ab28-900e3f737a84/sv-benchmarks/c/pthread-divine/divinefifo_1w1r.i[49487,49500] [2022-11-03 03:34:26,224 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:34:26,290 INFO L208 MainTranslator]: Completed translation [2022-11-03 03:34:26,293 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:34:26 WrapperNode [2022-11-03 03:34:26,294 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 03:34:26,295 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 03:34:26,295 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 03:34:26,295 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 03:34:26,303 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:34:26" (1/1) ... [2022-11-03 03:34:26,341 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:34:26" (1/1) ... [2022-11-03 03:34:26,390 INFO L138 Inliner]: procedures = 278, calls = 101, calls flagged for inlining = 18, calls inlined = 18, statements flattened = 405 [2022-11-03 03:34:26,390 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 03:34:26,391 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 03:34:26,391 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 03:34:26,391 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 03:34:26,402 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:34:26" (1/1) ... [2022-11-03 03:34:26,402 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:34:26" (1/1) ... [2022-11-03 03:34:26,418 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:34:26" (1/1) ... [2022-11-03 03:34:26,418 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:34:26" (1/1) ... [2022-11-03 03:34:26,453 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:34:26" (1/1) ... [2022-11-03 03:34:26,473 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:34:26" (1/1) ... [2022-11-03 03:34:26,475 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:34:26" (1/1) ... [2022-11-03 03:34:26,477 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:34:26" (1/1) ... [2022-11-03 03:34:26,482 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 03:34:26,483 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 03:34:26,483 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 03:34:26,483 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 03:34:26,484 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:34:26" (1/1) ... [2022-11-03 03:34:26,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:34:26,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5f6adc-d985-4909-ab28-900e3f737a84/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:34:26,554 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5f6adc-d985-4909-ab28-900e3f737a84/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 03:34:26,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5f6adc-d985-4909-ab28-900e3f737a84/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 03:34:26,607 INFO L130 BoogieDeclarations]: Found specification of procedure pusher [2022-11-03 03:34:26,608 INFO L138 BoogieDeclarations]: Found implementation of procedure pusher [2022-11-03 03:34:26,608 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 03:34:26,608 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 03:34:26,608 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 03:34:26,608 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 03:34:26,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 03:34:26,608 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 03:34:26,609 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 03:34:26,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 03:34:26,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 03:34:26,609 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 03:34:26,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 03:34:26,611 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-03 03:34:26,775 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 03:34:26,777 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 03:34:27,559 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 03:34:27,581 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 03:34:27,581 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-03 03:34:27,585 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:34:27 BoogieIcfgContainer [2022-11-03 03:34:27,585 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 03:34:27,589 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 03:34:27,589 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 03:34:27,593 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 03:34:27,593 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:34:25" (1/3) ... [2022-11-03 03:34:27,594 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bfb669d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:34:27, skipping insertion in model container [2022-11-03 03:34:27,594 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:34:26" (2/3) ... [2022-11-03 03:34:27,594 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bfb669d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:34:27, skipping insertion in model container [2022-11-03 03:34:27,595 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:34:27" (3/3) ... [2022-11-03 03:34:27,597 INFO L112 eAbstractionObserver]: Analyzing ICFG divinefifo_1w1r.i [2022-11-03 03:34:27,606 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-03 03:34:27,617 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 03:34:27,618 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2022-11-03 03:34:27,618 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-03 03:34:27,714 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-03 03:34:27,794 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-03 03:34:27,814 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 467 places, 495 transitions, 998 flow [2022-11-03 03:34:27,817 INFO L112 LiptonReduction]: Starting Lipton reduction on Petri net that has 467 places, 495 transitions, 998 flow [2022-11-03 03:34:27,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 467 places, 495 transitions, 998 flow [2022-11-03 03:34:28,054 INFO L130 PetriNetUnfolder]: 32/494 cut-off events. [2022-11-03 03:34:28,055 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-03 03:34:28,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 499 conditions, 494 events. 32/494 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1130 event pairs, 0 based on Foata normal form. 0/451 useless extension candidates. Maximal degree in co-relation 340. Up to 3 conditions per place. [2022-11-03 03:34:28,086 INFO L118 LiptonReduction]: Number of co-enabled transitions 35328 [2022-11-03 03:35:30,579 WARN L234 SmtUtils]: Spent 5.49s on a formula simplification. DAG size of input: 186 DAG size of output: 181 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-03 03:35:53,559 WARN L234 SmtUtils]: Spent 7.50s on a formula simplification. DAG size of input: 223 DAG size of output: 212 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-03 03:36:03,246 WARN L234 SmtUtils]: Spent 6.69s on a formula simplification. DAG size of input: 229 DAG size of output: 218 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-03 03:36:06,668 INFO L133 LiptonReduction]: Checked pairs total: 137392 [2022-11-03 03:36:06,668 INFO L135 LiptonReduction]: Total number of compositions: 528 [2022-11-03 03:36:06,677 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 105 places, 120 transitions, 248 flow [2022-11-03 03:36:06,765 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1432 states, 1421 states have (on average 2.3040112596762845) internal successors, (3274), 1431 states have internal predecessors, (3274), 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 03:36:06,794 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 03:36:06,801 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;@4e88e081, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 03:36:06,801 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2022-11-03 03:36:06,807 INFO L276 IsEmpty]: Start isEmpty. Operand has 1432 states, 1421 states have (on average 2.3040112596762845) internal successors, (3274), 1431 states have internal predecessors, (3274), 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 03:36:06,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-11-03 03:36:06,817 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:36:06,818 INFO L195 NwaCegarLoop]: trace histogram [1] [2022-11-03 03:36:06,819 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-11-03 03:36:06,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:36:06,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1744, now seen corresponding path program 1 times [2022-11-03 03:36:06,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:36:06,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667564731] [2022-11-03 03:36:06,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:36:06,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:36:06,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:36:06,987 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 03:36:06,987 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:36:06,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667564731] [2022-11-03 03:36:06,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667564731] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:36:06,989 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:36:06,989 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-03 03:36:06,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908838029] [2022-11-03 03:36:06,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:36:06,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-03 03:36:06,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:36:07,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-03 03:36:07,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 03:36:07,030 INFO L87 Difference]: Start difference. First operand has 1432 states, 1421 states have (on average 2.3040112596762845) internal successors, (3274), 1431 states have internal predecessors, (3274), 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 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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 03:36:07,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:36:07,314 INFO L93 Difference]: Finished difference Result 1431 states and 3197 transitions. [2022-11-03 03:36:07,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-03 03:36:07,316 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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 1 [2022-11-03 03:36:07,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:36:07,337 INFO L225 Difference]: With dead ends: 1431 [2022-11-03 03:36:07,337 INFO L226 Difference]: Without dead ends: 1431 [2022-11-03 03:36:07,338 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 03:36:07,341 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:36:07,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 23 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 03:36:07,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1431 states. [2022-11-03 03:36:07,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1431 to 1431. [2022-11-03 03:36:07,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1431 states, 1421 states have (on average 2.2498240675580576) internal successors, (3197), 1430 states have internal predecessors, (3197), 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 03:36:07,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1431 states to 1431 states and 3197 transitions. [2022-11-03 03:36:07,445 INFO L78 Accepts]: Start accepts. Automaton has 1431 states and 3197 transitions. Word has length 1 [2022-11-03 03:36:07,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:36:07,445 INFO L495 AbstractCegarLoop]: Abstraction has 1431 states and 3197 transitions. [2022-11-03 03:36:07,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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 03:36:07,446 INFO L276 IsEmpty]: Start isEmpty. Operand 1431 states and 3197 transitions. [2022-11-03 03:36:07,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-03 03:36:07,447 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:36:07,447 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-03 03:36:07,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 03:36:07,448 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-11-03 03:36:07,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:36:07,448 INFO L85 PathProgramCache]: Analyzing trace with hash -425217007, now seen corresponding path program 1 times [2022-11-03 03:36:07,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:36:07,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405188773] [2022-11-03 03:36:07,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:36:07,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:36:07,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:36:07,773 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 03:36:07,774 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:36:07,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405188773] [2022-11-03 03:36:07,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405188773] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:36:07,774 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:36:07,774 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:36:07,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689517827] [2022-11-03 03:36:07,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:36:07,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:36:07,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:36:07,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:36:07,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:36:07,777 INFO L87 Difference]: Start difference. First operand 1431 states and 3197 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 03:36:08,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:36:08,187 INFO L93 Difference]: Finished difference Result 2685 states and 6008 transitions. [2022-11-03 03:36:08,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:36:08,188 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 6 [2022-11-03 03:36:08,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:36:08,207 INFO L225 Difference]: With dead ends: 2685 [2022-11-03 03:36:08,208 INFO L226 Difference]: Without dead ends: 2685 [2022-11-03 03:36:08,208 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 03:36:08,215 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 95 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 03:36:08,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 49 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 03:36:08,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2685 states. [2022-11-03 03:36:08,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2685 to 1450. [2022-11-03 03:36:08,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1450 states, 1440 states have (on average 2.247916666666667) internal successors, (3237), 1449 states have internal predecessors, (3237), 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 03:36:08,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1450 states to 1450 states and 3237 transitions. [2022-11-03 03:36:08,345 INFO L78 Accepts]: Start accepts. Automaton has 1450 states and 3237 transitions. Word has length 6 [2022-11-03 03:36:08,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:36:08,345 INFO L495 AbstractCegarLoop]: Abstraction has 1450 states and 3237 transitions. [2022-11-03 03:36:08,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 03:36:08,345 INFO L276 IsEmpty]: Start isEmpty. Operand 1450 states and 3237 transitions. [2022-11-03 03:36:08,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-03 03:36:08,346 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:36:08,346 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:36:08,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 03:36:08,347 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-11-03 03:36:08,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:36:08,347 INFO L85 PathProgramCache]: Analyzing trace with hash -295714643, now seen corresponding path program 1 times [2022-11-03 03:36:08,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:36:08,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501258239] [2022-11-03 03:36:08,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:36:08,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:36:08,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:36:08,584 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 03:36:08,584 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:36:08,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501258239] [2022-11-03 03:36:08,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501258239] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:36:08,585 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:36:08,585 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:36:08,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007324659] [2022-11-03 03:36:08,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:36:08,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:36:08,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:36:08,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:36:08,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:36:08,588 INFO L87 Difference]: Start difference. First operand 1450 states and 3237 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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 03:36:08,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:36:08,877 INFO L93 Difference]: Finished difference Result 1450 states and 3218 transitions. [2022-11-03 03:36:08,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:36:08,879 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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 7 [2022-11-03 03:36:08,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:36:08,886 INFO L225 Difference]: With dead ends: 1450 [2022-11-03 03:36:08,886 INFO L226 Difference]: Without dead ends: 1450 [2022-11-03 03:36:08,887 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 03:36:08,892 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 108 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:36:08,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 29 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 03:36:08,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1450 states. [2022-11-03 03:36:08,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1450 to 1450. [2022-11-03 03:36:08,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1450 states, 1440 states have (on average 2.234722222222222) internal successors, (3218), 1449 states have internal predecessors, (3218), 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 03:36:08,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1450 states to 1450 states and 3218 transitions. [2022-11-03 03:36:08,938 INFO L78 Accepts]: Start accepts. Automaton has 1450 states and 3218 transitions. Word has length 7 [2022-11-03 03:36:08,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:36:08,938 INFO L495 AbstractCegarLoop]: Abstraction has 1450 states and 3218 transitions. [2022-11-03 03:36:08,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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 03:36:08,939 INFO L276 IsEmpty]: Start isEmpty. Operand 1450 states and 3218 transitions. [2022-11-03 03:36:08,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-03 03:36:08,940 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:36:08,940 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:36:08,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 03:36:08,941 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-11-03 03:36:08,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:36:08,942 INFO L85 PathProgramCache]: Analyzing trace with hash -569913739, now seen corresponding path program 1 times [2022-11-03 03:36:08,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:36:08,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938751799] [2022-11-03 03:36:08,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:36:08,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:36:09,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:36:10,003 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 03:36:10,003 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:36:10,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938751799] [2022-11-03 03:36:10,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938751799] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:36:10,004 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:36:10,004 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:36:10,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673239758] [2022-11-03 03:36:10,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:36:10,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 03:36:10,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:36:10,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 03:36:10,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:36:10,007 INFO L87 Difference]: Start difference. First operand 1450 states and 3218 transitions. Second operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 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 03:36:10,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:36:10,773 INFO L93 Difference]: Finished difference Result 1836 states and 4079 transitions. [2022-11-03 03:36:10,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 03:36:10,778 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 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 8 [2022-11-03 03:36:10,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:36:10,787 INFO L225 Difference]: With dead ends: 1836 [2022-11-03 03:36:10,788 INFO L226 Difference]: Without dead ends: 1836 [2022-11-03 03:36:10,788 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-11-03 03:36:10,791 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 151 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 564 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-03 03:36:10,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 19 Invalid, 571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 564 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-03 03:36:10,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1836 states. [2022-11-03 03:36:10,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1836 to 1557. [2022-11-03 03:36:10,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1557 states, 1547 states have (on average 2.2385261797026503) internal successors, (3463), 1556 states have internal predecessors, (3463), 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 03:36:10,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1557 states to 1557 states and 3463 transitions. [2022-11-03 03:36:10,838 INFO L78 Accepts]: Start accepts. Automaton has 1557 states and 3463 transitions. Word has length 8 [2022-11-03 03:36:10,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:36:10,838 INFO L495 AbstractCegarLoop]: Abstraction has 1557 states and 3463 transitions. [2022-11-03 03:36:10,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 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 03:36:10,839 INFO L276 IsEmpty]: Start isEmpty. Operand 1557 states and 3463 transitions. [2022-11-03 03:36:10,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-03 03:36:10,840 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:36:10,840 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:36:10,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 03:36:10,841 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-11-03 03:36:10,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:36:10,841 INFO L85 PathProgramCache]: Analyzing trace with hash 2069011939, now seen corresponding path program 1 times [2022-11-03 03:36:10,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:36:10,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591326514] [2022-11-03 03:36:10,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:36:10,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:36:10,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:36:11,018 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 03:36:11,018 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:36:11,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591326514] [2022-11-03 03:36:11,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591326514] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:36:11,019 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:36:11,019 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 03:36:11,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554231837] [2022-11-03 03:36:11,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:36:11,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:36:11,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:36:11,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:36:11,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:36:11,021 INFO L87 Difference]: Start difference. First operand 1557 states and 3463 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 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 03:36:11,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:36:11,381 INFO L93 Difference]: Finished difference Result 2565 states and 5690 transitions. [2022-11-03 03:36:11,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:36:11,382 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 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 10 [2022-11-03 03:36:11,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:36:11,393 INFO L225 Difference]: With dead ends: 2565 [2022-11-03 03:36:11,393 INFO L226 Difference]: Without dead ends: 2565 [2022-11-03 03:36:11,393 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:36:11,394 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 72 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:36:11,395 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 49 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 03:36:11,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2565 states. [2022-11-03 03:36:11,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2565 to 1614. [2022-11-03 03:36:11,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1614 states, 1604 states have (on average 2.233790523690773) internal successors, (3583), 1613 states have internal predecessors, (3583), 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 03:36:11,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1614 states to 1614 states and 3583 transitions. [2022-11-03 03:36:11,447 INFO L78 Accepts]: Start accepts. Automaton has 1614 states and 3583 transitions. Word has length 10 [2022-11-03 03:36:11,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:36:11,447 INFO L495 AbstractCegarLoop]: Abstraction has 1614 states and 3583 transitions. [2022-11-03 03:36:11,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 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 03:36:11,447 INFO L276 IsEmpty]: Start isEmpty. Operand 1614 states and 3583 transitions. [2022-11-03 03:36:11,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-03 03:36:11,449 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:36:11,449 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:36:11,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 03:36:11,450 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-11-03 03:36:11,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:36:11,451 INFO L85 PathProgramCache]: Analyzing trace with hash -1557382420, now seen corresponding path program 1 times [2022-11-03 03:36:11,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:36:11,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692070426] [2022-11-03 03:36:11,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:36:11,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:36:11,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:36:12,637 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 03:36:12,637 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:36:12,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692070426] [2022-11-03 03:36:12,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692070426] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:36:12,637 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:36:12,637 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 03:36:12,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769372244] [2022-11-03 03:36:12,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:36:12,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 03:36:12,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:36:12,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 03:36:12,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-03 03:36:12,639 INFO L87 Difference]: Start difference. First operand 1614 states and 3583 transitions. Second operand has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 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 03:36:13,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:36:13,813 INFO L93 Difference]: Finished difference Result 1994 states and 4414 transitions. [2022-11-03 03:36:13,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 03:36:13,814 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 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 14 [2022-11-03 03:36:13,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:36:13,823 INFO L225 Difference]: With dead ends: 1994 [2022-11-03 03:36:13,824 INFO L226 Difference]: Without dead ends: 1994 [2022-11-03 03:36:13,825 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=95, Unknown=0, NotChecked=0, Total=156 [2022-11-03 03:36:13,827 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 173 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 926 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 940 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 926 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:36:13,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 18 Invalid, 940 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 926 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-03 03:36:13,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1994 states. [2022-11-03 03:36:13,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1994 to 1633. [2022-11-03 03:36:13,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1633 states, 1623 states have (on average 2.234750462107209) internal successors, (3627), 1632 states have internal predecessors, (3627), 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 03:36:13,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1633 states to 1633 states and 3627 transitions. [2022-11-03 03:36:13,887 INFO L78 Accepts]: Start accepts. Automaton has 1633 states and 3627 transitions. Word has length 14 [2022-11-03 03:36:13,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:36:13,888 INFO L495 AbstractCegarLoop]: Abstraction has 1633 states and 3627 transitions. [2022-11-03 03:36:13,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 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 03:36:13,888 INFO L276 IsEmpty]: Start isEmpty. Operand 1633 states and 3627 transitions. [2022-11-03 03:36:13,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-03 03:36:13,894 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:36:13,894 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:36:13,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 03:36:13,894 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-11-03 03:36:13,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:36:13,895 INFO L85 PathProgramCache]: Analyzing trace with hash 1015836900, now seen corresponding path program 2 times [2022-11-03 03:36:13,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:36:13,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871749871] [2022-11-03 03:36:13,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:36:13,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:36:13,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:36:15,189 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 03:36:15,189 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:36:15,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871749871] [2022-11-03 03:36:15,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871749871] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:36:15,189 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:36:15,189 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-03 03:36:15,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529227949] [2022-11-03 03:36:15,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:36:15,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-03 03:36:15,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:36:15,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-03 03:36:15,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2022-11-03 03:36:15,191 INFO L87 Difference]: Start difference. First operand 1633 states and 3627 transitions. Second operand has 12 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 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 03:36:18,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:36:18,045 INFO L93 Difference]: Finished difference Result 2860 states and 6349 transitions. [2022-11-03 03:36:18,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-03 03:36:18,046 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 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 14 [2022-11-03 03:36:18,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:36:18,060 INFO L225 Difference]: With dead ends: 2860 [2022-11-03 03:36:18,060 INFO L226 Difference]: Without dead ends: 2860 [2022-11-03 03:36:18,061 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=358, Invalid=698, Unknown=0, NotChecked=0, Total=1056 [2022-11-03 03:36:18,061 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 551 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 1571 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 551 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 1615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-03 03:36:18,062 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [551 Valid, 18 Invalid, 1615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1571 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-03 03:36:18,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2860 states. [2022-11-03 03:36:18,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2860 to 1628. [2022-11-03 03:36:18,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1628 states, 1618 states have (on average 2.234239802224969) internal successors, (3615), 1627 states have internal predecessors, (3615), 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 03:36:18,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1628 states to 1628 states and 3615 transitions. [2022-11-03 03:36:18,144 INFO L78 Accepts]: Start accepts. Automaton has 1628 states and 3615 transitions. Word has length 14 [2022-11-03 03:36:18,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:36:18,144 INFO L495 AbstractCegarLoop]: Abstraction has 1628 states and 3615 transitions. [2022-11-03 03:36:18,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 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 03:36:18,144 INFO L276 IsEmpty]: Start isEmpty. Operand 1628 states and 3615 transitions. [2022-11-03 03:36:18,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-03 03:36:18,145 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:36:18,146 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:36:18,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 03:36:18,146 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-11-03 03:36:18,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:36:18,147 INFO L85 PathProgramCache]: Analyzing trace with hash -835999636, now seen corresponding path program 3 times [2022-11-03 03:36:18,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:36:18,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462405398] [2022-11-03 03:36:18,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:36:18,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:36:18,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:36:18,862 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 03:36:18,862 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:36:18,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462405398] [2022-11-03 03:36:18,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462405398] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:36:18,862 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:36:18,862 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-03 03:36:18,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423698651] [2022-11-03 03:36:18,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:36:18,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-03 03:36:18,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:36:18,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-03 03:36:18,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-11-03 03:36:18,864 INFO L87 Difference]: Start difference. First operand 1628 states and 3615 transitions. Second operand has 12 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 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 03:36:21,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:36:21,697 INFO L93 Difference]: Finished difference Result 2063 states and 4560 transitions. [2022-11-03 03:36:21,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-03 03:36:21,698 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 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 14 [2022-11-03 03:36:21,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:36:21,707 INFO L225 Difference]: With dead ends: 2063 [2022-11-03 03:36:21,707 INFO L226 Difference]: Without dead ends: 2063 [2022-11-03 03:36:21,707 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=287, Invalid=643, Unknown=0, NotChecked=0, Total=930 [2022-11-03 03:36:21,708 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 485 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 1995 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 485 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 2020 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:36:21,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [485 Valid, 16 Invalid, 2020 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1995 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-03 03:36:21,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2063 states. [2022-11-03 03:36:21,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2063 to 1623. [2022-11-03 03:36:21,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1623 states, 1613 states have (on average 2.2337259764414137) internal successors, (3603), 1622 states have internal predecessors, (3603), 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 03:36:21,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1623 states to 1623 states and 3603 transitions. [2022-11-03 03:36:21,754 INFO L78 Accepts]: Start accepts. Automaton has 1623 states and 3603 transitions. Word has length 14 [2022-11-03 03:36:21,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:36:21,755 INFO L495 AbstractCegarLoop]: Abstraction has 1623 states and 3603 transitions. [2022-11-03 03:36:21,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 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 03:36:21,755 INFO L276 IsEmpty]: Start isEmpty. Operand 1623 states and 3603 transitions. [2022-11-03 03:36:21,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-03 03:36:21,756 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:36:21,756 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:36:21,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-03 03:36:21,757 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-11-03 03:36:21,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:36:21,757 INFO L85 PathProgramCache]: Analyzing trace with hash -92675071, now seen corresponding path program 1 times [2022-11-03 03:36:21,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:36:21,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848868101] [2022-11-03 03:36:21,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:36:21,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:36:21,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:36:22,783 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 03:36:22,783 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:36:22,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848868101] [2022-11-03 03:36:22,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848868101] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:36:22,783 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:36:22,784 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 03:36:22,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984470083] [2022-11-03 03:36:22,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:36:22,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 03:36:22,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:36:22,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 03:36:22,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-03 03:36:22,785 INFO L87 Difference]: Start difference. First operand 1623 states and 3603 transitions. Second operand has 8 states, 8 states have (on average 1.75) internal successors, (14), 7 states have internal predecessors, (14), 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 03:36:24,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:36:24,227 INFO L93 Difference]: Finished difference Result 2237 states and 4916 transitions. [2022-11-03 03:36:24,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-03 03:36:24,228 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 7 states have internal predecessors, (14), 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 14 [2022-11-03 03:36:24,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:36:24,238 INFO L225 Difference]: With dead ends: 2237 [2022-11-03 03:36:24,238 INFO L226 Difference]: Without dead ends: 2180 [2022-11-03 03:36:24,238 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2022-11-03 03:36:24,239 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 222 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 1130 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 1155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:36:24,239 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 17 Invalid, 1155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1130 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-03 03:36:24,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2180 states. [2022-11-03 03:36:24,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2180 to 1673. [2022-11-03 03:36:24,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1673 states, 1663 states have (on average 2.2357185808779314) internal successors, (3718), 1672 states have internal predecessors, (3718), 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 03:36:24,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1673 states to 1673 states and 3718 transitions. [2022-11-03 03:36:24,288 INFO L78 Accepts]: Start accepts. Automaton has 1673 states and 3718 transitions. Word has length 14 [2022-11-03 03:36:24,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:36:24,288 INFO L495 AbstractCegarLoop]: Abstraction has 1673 states and 3718 transitions. [2022-11-03 03:36:24,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 7 states have internal predecessors, (14), 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 03:36:24,289 INFO L276 IsEmpty]: Start isEmpty. Operand 1673 states and 3718 transitions. [2022-11-03 03:36:24,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-03 03:36:24,290 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:36:24,290 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:36:24,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-03 03:36:24,290 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-11-03 03:36:24,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:36:24,291 INFO L85 PathProgramCache]: Analyzing trace with hash -1049163039, now seen corresponding path program 1 times [2022-11-03 03:36:24,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:36:24,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170291213] [2022-11-03 03:36:24,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:36:24,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:36:24,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:36:24,920 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 03:36:24,921 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:36:24,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170291213] [2022-11-03 03:36:24,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170291213] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:36:24,921 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:36:24,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 03:36:24,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143793878] [2022-11-03 03:36:24,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:36:24,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-03 03:36:24,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:36:24,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-03 03:36:24,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-03 03:36:24,922 INFO L87 Difference]: Start difference. First operand 1673 states and 3718 transitions. Second operand has 9 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 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 03:36:26,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:36:26,385 INFO L93 Difference]: Finished difference Result 2186 states and 4833 transitions. [2022-11-03 03:36:26,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-03 03:36:26,385 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 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 15 [2022-11-03 03:36:26,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:36:26,399 INFO L225 Difference]: With dead ends: 2186 [2022-11-03 03:36:26,399 INFO L226 Difference]: Without dead ends: 2186 [2022-11-03 03:36:26,399 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=106, Invalid=200, Unknown=0, NotChecked=0, Total=306 [2022-11-03 03:36:26,400 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 346 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 988 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 1026 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 988 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:36:26,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [346 Valid, 18 Invalid, 1026 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 988 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-03 03:36:26,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2186 states. [2022-11-03 03:36:26,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2186 to 1716. [2022-11-03 03:36:26,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1716 states, 1706 states have (on average 2.2373974208675262) internal successors, (3817), 1715 states have internal predecessors, (3817), 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 03:36:26,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1716 states to 1716 states and 3817 transitions. [2022-11-03 03:36:26,467 INFO L78 Accepts]: Start accepts. Automaton has 1716 states and 3817 transitions. Word has length 15 [2022-11-03 03:36:26,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:36:26,467 INFO L495 AbstractCegarLoop]: Abstraction has 1716 states and 3817 transitions. [2022-11-03 03:36:26,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 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 03:36:26,468 INFO L276 IsEmpty]: Start isEmpty. Operand 1716 states and 3817 transitions. [2022-11-03 03:36:26,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-03 03:36:26,469 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:36:26,469 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:36:26,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-03 03:36:26,470 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-11-03 03:36:26,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:36:26,470 INFO L85 PathProgramCache]: Analyzing trace with hash -1258419719, now seen corresponding path program 1 times [2022-11-03 03:36:26,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:36:26,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027941457] [2022-11-03 03:36:26,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:36:26,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:36:26,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:36:28,107 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 03:36:28,107 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:36:28,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027941457] [2022-11-03 03:36:28,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027941457] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:36:28,108 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:36:28,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-03 03:36:28,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351602100] [2022-11-03 03:36:28,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:36:28,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-03 03:36:28,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:36:28,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-03 03:36:28,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-11-03 03:36:28,109 INFO L87 Difference]: Start difference. First operand 1716 states and 3817 transitions. Second operand has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 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 03:36:31,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:36:31,395 INFO L93 Difference]: Finished difference Result 2636 states and 5825 transitions. [2022-11-03 03:36:31,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-03 03:36:31,396 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 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 15 [2022-11-03 03:36:31,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:36:31,403 INFO L225 Difference]: With dead ends: 2636 [2022-11-03 03:36:31,404 INFO L226 Difference]: Without dead ends: 2636 [2022-11-03 03:36:31,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=193, Invalid=563, Unknown=0, NotChecked=0, Total=756 [2022-11-03 03:36:31,405 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 351 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 2374 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 2409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 2374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-03 03:36:31,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [351 Valid, 18 Invalid, 2409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 2374 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-03 03:36:31,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2636 states. [2022-11-03 03:36:31,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2636 to 1824. [2022-11-03 03:36:31,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1824 states, 1814 states have (on average 2.2381477398015437) internal successors, (4060), 1823 states have internal predecessors, (4060), 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 03:36:31,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1824 states to 1824 states and 4060 transitions. [2022-11-03 03:36:31,473 INFO L78 Accepts]: Start accepts. Automaton has 1824 states and 4060 transitions. Word has length 15 [2022-11-03 03:36:31,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:36:31,473 INFO L495 AbstractCegarLoop]: Abstraction has 1824 states and 4060 transitions. [2022-11-03 03:36:31,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 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 03:36:31,473 INFO L276 IsEmpty]: Start isEmpty. Operand 1824 states and 4060 transitions. [2022-11-03 03:36:31,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-03 03:36:31,475 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:36:31,475 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:36:31,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-03 03:36:31,475 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-11-03 03:36:31,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:36:31,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1411224553, now seen corresponding path program 2 times [2022-11-03 03:36:31,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:36:31,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309091699] [2022-11-03 03:36:31,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:36:31,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:36:31,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:36:32,454 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 03:36:32,454 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:36:32,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309091699] [2022-11-03 03:36:32,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309091699] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:36:32,455 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:36:32,455 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-03 03:36:32,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539797452] [2022-11-03 03:36:32,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:36:32,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-03 03:36:32,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:36:32,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-03 03:36:32,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-11-03 03:36:32,456 INFO L87 Difference]: Start difference. First operand 1824 states and 4060 transitions. Second operand has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 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 03:36:36,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:36:36,444 INFO L93 Difference]: Finished difference Result 3455 states and 7611 transitions. [2022-11-03 03:36:36,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-03 03:36:36,445 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 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 15 [2022-11-03 03:36:36,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:36:36,453 INFO L225 Difference]: With dead ends: 3455 [2022-11-03 03:36:36,453 INFO L226 Difference]: Without dead ends: 3455 [2022-11-03 03:36:36,454 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=558, Invalid=1248, Unknown=0, NotChecked=0, Total=1806 [2022-11-03 03:36:36,454 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 716 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 2506 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 716 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 2590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 2506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-03 03:36:36,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [716 Valid, 18 Invalid, 2590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 2506 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-03 03:36:36,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3455 states. [2022-11-03 03:36:36,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3455 to 1816. [2022-11-03 03:36:36,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1816 states, 1806 states have (on average 2.237541528239203) internal successors, (4041), 1815 states have internal predecessors, (4041), 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 03:36:36,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1816 states to 1816 states and 4041 transitions. [2022-11-03 03:36:36,530 INFO L78 Accepts]: Start accepts. Automaton has 1816 states and 4041 transitions. Word has length 15 [2022-11-03 03:36:36,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:36:36,530 INFO L495 AbstractCegarLoop]: Abstraction has 1816 states and 4041 transitions. [2022-11-03 03:36:36,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 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 03:36:36,530 INFO L276 IsEmpty]: Start isEmpty. Operand 1816 states and 4041 transitions. [2022-11-03 03:36:36,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-03 03:36:36,532 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:36:36,532 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:36:36,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-03 03:36:36,532 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-11-03 03:36:36,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:36:36,533 INFO L85 PathProgramCache]: Analyzing trace with hash 1938226169, now seen corresponding path program 3 times [2022-11-03 03:36:36,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:36:36,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719916194] [2022-11-03 03:36:36,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:36:36,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:36:36,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:36:37,205 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 03:36:37,205 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:36:37,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719916194] [2022-11-03 03:36:37,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719916194] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:36:37,206 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:36:37,206 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-03 03:36:37,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977493043] [2022-11-03 03:36:37,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:36:37,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-03 03:36:37,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:36:37,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-03 03:36:37,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-11-03 03:36:37,207 INFO L87 Difference]: Start difference. First operand 1816 states and 4041 transitions. Second operand has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 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 03:36:41,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:36:41,367 INFO L93 Difference]: Finished difference Result 3473 states and 7645 transitions. [2022-11-03 03:36:41,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-03 03:36:41,368 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 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 15 [2022-11-03 03:36:41,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:36:41,376 INFO L225 Difference]: With dead ends: 3473 [2022-11-03 03:36:41,376 INFO L226 Difference]: Without dead ends: 3473 [2022-11-03 03:36:41,377 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 369 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=567, Invalid=1325, Unknown=0, NotChecked=0, Total=1892 [2022-11-03 03:36:41,378 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 974 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 1954 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 974 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 2055 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 1954 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:36:41,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [974 Valid, 18 Invalid, 2055 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 1954 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-03 03:36:41,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3473 states. [2022-11-03 03:36:41,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3473 to 1805. [2022-11-03 03:36:41,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1805 states, 1795 states have (on average 2.2367688022284122) internal successors, (4015), 1804 states have internal predecessors, (4015), 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 03:36:41,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1805 states to 1805 states and 4015 transitions. [2022-11-03 03:36:41,439 INFO L78 Accepts]: Start accepts. Automaton has 1805 states and 4015 transitions. Word has length 15 [2022-11-03 03:36:41,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:36:41,440 INFO L495 AbstractCegarLoop]: Abstraction has 1805 states and 4015 transitions. [2022-11-03 03:36:41,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 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 03:36:41,440 INFO L276 IsEmpty]: Start isEmpty. Operand 1805 states and 4015 transitions. [2022-11-03 03:36:41,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-03 03:36:41,441 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:36:41,441 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:36:41,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-03 03:36:41,442 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-11-03 03:36:41,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:36:41,442 INFO L85 PathProgramCache]: Analyzing trace with hash -679179095, now seen corresponding path program 2 times [2022-11-03 03:36:41,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:36:41,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38778655] [2022-11-03 03:36:41,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:36:41,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:36:41,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:36:42,409 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 03:36:42,409 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:36:42,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38778655] [2022-11-03 03:36:42,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38778655] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:36:42,409 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:36:42,409 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-03 03:36:42,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047683207] [2022-11-03 03:36:42,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:36:42,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-03 03:36:42,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:36:42,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-03 03:36:42,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2022-11-03 03:36:42,411 INFO L87 Difference]: Start difference. First operand 1805 states and 4015 transitions. Second operand has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 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 03:36:46,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:36:46,883 INFO L93 Difference]: Finished difference Result 2728 states and 6043 transitions. [2022-11-03 03:36:46,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-03 03:36:46,884 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 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 15 [2022-11-03 03:36:46,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:36:46,890 INFO L225 Difference]: With dead ends: 2728 [2022-11-03 03:36:46,890 INFO L226 Difference]: Without dead ends: 2728 [2022-11-03 03:36:46,891 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=425, Invalid=1057, Unknown=0, NotChecked=0, Total=1482 [2022-11-03 03:36:46,892 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 543 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 2757 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 543 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 2797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 2757 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-03 03:36:46,892 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [543 Valid, 19 Invalid, 2797 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 2757 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-03 03:36:46,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2728 states. [2022-11-03 03:36:46,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2728 to 1840. [2022-11-03 03:36:46,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1840 states, 1830 states have (on average 2.23879781420765) internal successors, (4097), 1839 states have internal predecessors, (4097), 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 03:36:46,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1840 states to 1840 states and 4097 transitions. [2022-11-03 03:36:46,959 INFO L78 Accepts]: Start accepts. Automaton has 1840 states and 4097 transitions. Word has length 15 [2022-11-03 03:36:46,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:36:46,959 INFO L495 AbstractCegarLoop]: Abstraction has 1840 states and 4097 transitions. [2022-11-03 03:36:46,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 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 03:36:46,959 INFO L276 IsEmpty]: Start isEmpty. Operand 1840 states and 4097 transitions. [2022-11-03 03:36:46,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-03 03:36:46,961 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:36:46,961 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:36:46,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-03 03:36:46,961 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-11-03 03:36:46,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:36:46,962 INFO L85 PathProgramCache]: Analyzing trace with hash 695013521, now seen corresponding path program 3 times [2022-11-03 03:36:46,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:36:46,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190593477] [2022-11-03 03:36:46,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:36:46,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:36:47,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:36:48,354 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 03:36:48,354 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:36:48,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190593477] [2022-11-03 03:36:48,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190593477] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:36:48,354 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:36:48,354 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-03 03:36:48,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414630757] [2022-11-03 03:36:48,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:36:48,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-03 03:36:48,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:36:48,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-03 03:36:48,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2022-11-03 03:36:48,356 INFO L87 Difference]: Start difference. First operand 1840 states and 4097 transitions. Second operand has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 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 03:36:53,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:36:53,691 INFO L93 Difference]: Finished difference Result 2518 states and 5582 transitions. [2022-11-03 03:36:53,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-03 03:36:53,692 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 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 15 [2022-11-03 03:36:53,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:36:53,700 INFO L225 Difference]: With dead ends: 2518 [2022-11-03 03:36:53,700 INFO L226 Difference]: Without dead ends: 2518 [2022-11-03 03:36:53,704 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=411, Invalid=1149, Unknown=0, NotChecked=0, Total=1560 [2022-11-03 03:36:53,706 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 450 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 3303 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 450 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 3347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 3303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:36:53,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [450 Valid, 19 Invalid, 3347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 3303 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-11-03 03:36:53,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2518 states. [2022-11-03 03:36:53,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2518 to 1826. [2022-11-03 03:36:53,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1826 states, 1816 states have (on average 2.23568281938326) internal successors, (4060), 1825 states have internal predecessors, (4060), 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 03:36:53,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1826 states to 1826 states and 4060 transitions. [2022-11-03 03:36:53,773 INFO L78 Accepts]: Start accepts. Automaton has 1826 states and 4060 transitions. Word has length 15 [2022-11-03 03:36:53,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:36:53,773 INFO L495 AbstractCegarLoop]: Abstraction has 1826 states and 4060 transitions. [2022-11-03 03:36:53,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 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 03:36:53,774 INFO L276 IsEmpty]: Start isEmpty. Operand 1826 states and 4060 transitions. [2022-11-03 03:36:53,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-03 03:36:53,775 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:36:53,775 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:36:53,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-03 03:36:53,776 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-11-03 03:36:53,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:36:53,776 INFO L85 PathProgramCache]: Analyzing trace with hash -161133215, now seen corresponding path program 4 times [2022-11-03 03:36:53,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:36:53,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336310060] [2022-11-03 03:36:53,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:36:53,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:36:53,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:36:54,529 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 03:36:54,530 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:36:54,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336310060] [2022-11-03 03:36:54,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336310060] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:36:54,533 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:36:54,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-03 03:36:54,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723723603] [2022-11-03 03:36:54,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:36:54,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-03 03:36:54,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:36:54,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-03 03:36:54,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-11-03 03:36:54,535 INFO L87 Difference]: Start difference. First operand 1826 states and 4060 transitions. Second operand has 12 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 states have internal predecessors, (15), 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 03:36:57,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:36:57,275 INFO L93 Difference]: Finished difference Result 2376 states and 5250 transitions. [2022-11-03 03:36:57,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-03 03:36:57,275 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 states have internal predecessors, (15), 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 15 [2022-11-03 03:36:57,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:36:57,282 INFO L225 Difference]: With dead ends: 2376 [2022-11-03 03:36:57,282 INFO L226 Difference]: Without dead ends: 2376 [2022-11-03 03:36:57,283 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=260, Invalid=610, Unknown=0, NotChecked=0, Total=870 [2022-11-03 03:36:57,283 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 435 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 2225 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 435 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 2258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 2225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:36:57,284 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [435 Valid, 16 Invalid, 2258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 2225 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-03 03:36:57,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2376 states. [2022-11-03 03:36:57,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2376 to 1820. [2022-11-03 03:36:57,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1820 states, 1810 states have (on average 2.235911602209945) internal successors, (4047), 1819 states have internal predecessors, (4047), 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 03:36:57,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1820 states to 1820 states and 4047 transitions. [2022-11-03 03:36:57,328 INFO L78 Accepts]: Start accepts. Automaton has 1820 states and 4047 transitions. Word has length 15 [2022-11-03 03:36:57,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:36:57,329 INFO L495 AbstractCegarLoop]: Abstraction has 1820 states and 4047 transitions. [2022-11-03 03:36:57,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 states have internal predecessors, (15), 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 03:36:57,329 INFO L276 IsEmpty]: Start isEmpty. Operand 1820 states and 4047 transitions. [2022-11-03 03:36:57,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-03 03:36:57,330 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:36:57,330 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:36:57,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-03 03:36:57,331 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-11-03 03:36:57,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:36:57,331 INFO L85 PathProgramCache]: Analyzing trace with hash 365868401, now seen corresponding path program 5 times [2022-11-03 03:36:57,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:36:57,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676449570] [2022-11-03 03:36:57,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:36:57,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:36:57,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:36:58,266 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 03:36:58,266 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:36:58,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676449570] [2022-11-03 03:36:58,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676449570] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:36:58,266 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:36:58,266 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-03 03:36:58,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036345613] [2022-11-03 03:36:58,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:36:58,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-03 03:36:58,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:36:58,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-03 03:36:58,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-11-03 03:36:58,268 INFO L87 Difference]: Start difference. First operand 1820 states and 4047 transitions. Second operand has 12 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 states have internal predecessors, (15), 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 03:37:01,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:37:01,031 INFO L93 Difference]: Finished difference Result 2521 states and 5565 transitions. [2022-11-03 03:37:01,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-03 03:37:01,032 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 states have internal predecessors, (15), 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 15 [2022-11-03 03:37:01,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:37:01,037 INFO L225 Difference]: With dead ends: 2521 [2022-11-03 03:37:01,038 INFO L226 Difference]: Without dead ends: 2521 [2022-11-03 03:37:01,038 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=304, Invalid=752, Unknown=0, NotChecked=0, Total=1056 [2022-11-03 03:37:01,039 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 623 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 1934 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 623 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 1972 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1934 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-03 03:37:01,039 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [623 Valid, 16 Invalid, 1972 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1934 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-03 03:37:01,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2521 states. [2022-11-03 03:37:01,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2521 to 1819. [2022-11-03 03:37:01,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1819 states, 1809 states have (on average 2.2360420121614153) internal successors, (4045), 1818 states have internal predecessors, (4045), 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 03:37:01,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1819 states to 1819 states and 4045 transitions. [2022-11-03 03:37:01,084 INFO L78 Accepts]: Start accepts. Automaton has 1819 states and 4045 transitions. Word has length 15 [2022-11-03 03:37:01,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:37:01,085 INFO L495 AbstractCegarLoop]: Abstraction has 1819 states and 4045 transitions. [2022-11-03 03:37:01,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 states have internal predecessors, (15), 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 03:37:01,085 INFO L276 IsEmpty]: Start isEmpty. Operand 1819 states and 4045 transitions. [2022-11-03 03:37:01,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-03 03:37:01,086 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:37:01,086 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:37:01,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-03 03:37:01,087 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-11-03 03:37:01,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:37:01,087 INFO L85 PathProgramCache]: Analyzing trace with hash 384302427, now seen corresponding path program 6 times [2022-11-03 03:37:01,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:37:01,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653910852] [2022-11-03 03:37:01,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:37:01,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:37:01,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:37:01,970 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 03:37:01,971 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:37:01,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653910852] [2022-11-03 03:37:01,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653910852] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:37:01,971 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:37:01,971 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-03 03:37:01,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415855851] [2022-11-03 03:37:01,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:37:01,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-03 03:37:01,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:37:01,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-03 03:37:01,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-11-03 03:37:01,972 INFO L87 Difference]: Start difference. First operand 1819 states and 4045 transitions. Second operand has 12 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 states have internal predecessors, (15), 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 03:37:04,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:37:04,794 INFO L93 Difference]: Finished difference Result 2412 states and 5324 transitions. [2022-11-03 03:37:04,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-03 03:37:04,794 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 states have internal predecessors, (15), 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 15 [2022-11-03 03:37:04,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:37:04,798 INFO L225 Difference]: With dead ends: 2412 [2022-11-03 03:37:04,798 INFO L226 Difference]: Without dead ends: 2412 [2022-11-03 03:37:04,798 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=270, Invalid=600, Unknown=0, NotChecked=0, Total=870 [2022-11-03 03:37:04,799 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 546 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 2329 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 546 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 2365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 2329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:37:04,799 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [546 Valid, 16 Invalid, 2365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 2329 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-03 03:37:04,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2412 states. [2022-11-03 03:37:04,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2412 to 1818. [2022-11-03 03:37:04,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1818 states, 1808 states have (on average 2.235066371681416) internal successors, (4041), 1817 states have internal predecessors, (4041), 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 03:37:04,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1818 states to 1818 states and 4041 transitions. [2022-11-03 03:37:04,843 INFO L78 Accepts]: Start accepts. Automaton has 1818 states and 4041 transitions. Word has length 15 [2022-11-03 03:37:04,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:37:04,844 INFO L495 AbstractCegarLoop]: Abstraction has 1818 states and 4041 transitions. [2022-11-03 03:37:04,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 states have internal predecessors, (15), 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 03:37:04,844 INFO L276 IsEmpty]: Start isEmpty. Operand 1818 states and 4041 transitions. [2022-11-03 03:37:04,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-03 03:37:04,845 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:37:04,845 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:37:04,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-03 03:37:04,846 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-11-03 03:37:04,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:37:04,846 INFO L85 PathProgramCache]: Analyzing trace with hash -102704583, now seen corresponding path program 4 times [2022-11-03 03:37:04,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:37:04,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797733889] [2022-11-03 03:37:04,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:37:04,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:37:04,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:37:06,035 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 03:37:06,036 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:37:06,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797733889] [2022-11-03 03:37:06,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797733889] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:37:06,036 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:37:06,036 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-03 03:37:06,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631968600] [2022-11-03 03:37:06,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:37:06,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-03 03:37:06,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:37:06,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-03 03:37:06,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-11-03 03:37:06,037 INFO L87 Difference]: Start difference. First operand 1818 states and 4041 transitions. Second operand has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 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 03:37:10,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:37:10,446 INFO L93 Difference]: Finished difference Result 2321 states and 5132 transitions. [2022-11-03 03:37:10,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-03 03:37:10,447 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 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 15 [2022-11-03 03:37:10,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:37:10,451 INFO L225 Difference]: With dead ends: 2321 [2022-11-03 03:37:10,451 INFO L226 Difference]: Without dead ends: 2321 [2022-11-03 03:37:10,452 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 389 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=513, Invalid=1467, Unknown=0, NotChecked=0, Total=1980 [2022-11-03 03:37:10,453 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 541 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 2795 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 541 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 2842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 2795 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-03 03:37:10,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [541 Valid, 19 Invalid, 2842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 2795 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-03 03:37:10,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2321 states. [2022-11-03 03:37:10,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2321 to 1822. [2022-11-03 03:37:10,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1822 states, 1812 states have (on average 2.2345474613686536) internal successors, (4049), 1821 states have internal predecessors, (4049), 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 03:37:10,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1822 states to 1822 states and 4049 transitions. [2022-11-03 03:37:10,495 INFO L78 Accepts]: Start accepts. Automaton has 1822 states and 4049 transitions. Word has length 15 [2022-11-03 03:37:10,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:37:10,495 INFO L495 AbstractCegarLoop]: Abstraction has 1822 states and 4049 transitions. [2022-11-03 03:37:10,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 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 03:37:10,496 INFO L276 IsEmpty]: Start isEmpty. Operand 1822 states and 4049 transitions. [2022-11-03 03:37:10,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-03 03:37:10,497 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:37:10,497 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:37:10,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-03 03:37:10,498 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-11-03 03:37:10,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:37:10,498 INFO L85 PathProgramCache]: Analyzing trace with hash 865208529, now seen corresponding path program 5 times [2022-11-03 03:37:10,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:37:10,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354039194] [2022-11-03 03:37:10,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:37:10,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:37:10,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:37:11,712 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 03:37:11,712 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:37:11,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354039194] [2022-11-03 03:37:11,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354039194] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:37:11,713 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:37:11,713 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-03 03:37:11,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444097649] [2022-11-03 03:37:11,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:37:11,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-03 03:37:11,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:37:11,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-03 03:37:11,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-11-03 03:37:11,714 INFO L87 Difference]: Start difference. First operand 1822 states and 4049 transitions. Second operand has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 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 03:37:16,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:37:16,947 INFO L93 Difference]: Finished difference Result 2338 states and 5170 transitions. [2022-11-03 03:37:16,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-03 03:37:16,948 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 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 15 [2022-11-03 03:37:16,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:37:16,951 INFO L225 Difference]: With dead ends: 2338 [2022-11-03 03:37:16,951 INFO L226 Difference]: Without dead ends: 2338 [2022-11-03 03:37:16,952 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=504, Invalid=1476, Unknown=0, NotChecked=0, Total=1980 [2022-11-03 03:37:16,953 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 577 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 3270 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 577 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 3321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 3270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:37:16,953 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [577 Valid, 19 Invalid, 3321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 3270 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-11-03 03:37:16,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2338 states. [2022-11-03 03:37:16,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2338 to 1822. [2022-11-03 03:37:16,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1822 states, 1812 states have (on average 2.2345474613686536) internal successors, (4049), 1821 states have internal predecessors, (4049), 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 03:37:16,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1822 states to 1822 states and 4049 transitions. [2022-11-03 03:37:16,996 INFO L78 Accepts]: Start accepts. Automaton has 1822 states and 4049 transitions. Word has length 15 [2022-11-03 03:37:16,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:37:16,996 INFO L495 AbstractCegarLoop]: Abstraction has 1822 states and 4049 transitions. [2022-11-03 03:37:16,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 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 03:37:16,997 INFO L276 IsEmpty]: Start isEmpty. Operand 1822 states and 4049 transitions. [2022-11-03 03:37:16,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-03 03:37:16,998 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:37:16,998 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:37:16,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-03 03:37:16,999 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-11-03 03:37:16,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:37:16,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1750067051, now seen corresponding path program 6 times [2022-11-03 03:37:16,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:37:17,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085744606] [2022-11-03 03:37:17,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:37:17,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:37:17,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:37:18,467 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 03:37:18,467 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:37:18,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085744606] [2022-11-03 03:37:18,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085744606] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:37:18,468 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:37:18,468 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-03 03:37:18,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544242281] [2022-11-03 03:37:18,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:37:18,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-03 03:37:18,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:37:18,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-03 03:37:18,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-03 03:37:18,469 INFO L87 Difference]: Start difference. First operand 1822 states and 4049 transitions. Second operand has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 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 03:37:23,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:37:23,612 INFO L93 Difference]: Finished difference Result 2369 states and 5233 transitions. [2022-11-03 03:37:23,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-03 03:37:23,613 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 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 15 [2022-11-03 03:37:23,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:37:23,616 INFO L225 Difference]: With dead ends: 2369 [2022-11-03 03:37:23,616 INFO L226 Difference]: Without dead ends: 2369 [2022-11-03 03:37:23,616 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=468, Invalid=1254, Unknown=0, NotChecked=0, Total=1722 [2022-11-03 03:37:23,617 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 540 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 2975 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 540 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 3023 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 2975 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-03 03:37:23,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [540 Valid, 19 Invalid, 3023 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 2975 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-03 03:37:23,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2369 states. [2022-11-03 03:37:23,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2369 to 1822. [2022-11-03 03:37:23,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1822 states, 1812 states have (on average 2.2345474613686536) internal successors, (4049), 1821 states have internal predecessors, (4049), 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 03:37:23,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1822 states to 1822 states and 4049 transitions. [2022-11-03 03:37:23,659 INFO L78 Accepts]: Start accepts. Automaton has 1822 states and 4049 transitions. Word has length 15 [2022-11-03 03:37:23,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:37:23,660 INFO L495 AbstractCegarLoop]: Abstraction has 1822 states and 4049 transitions. [2022-11-03 03:37:23,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 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 03:37:23,660 INFO L276 IsEmpty]: Start isEmpty. Operand 1822 states and 4049 transitions. [2022-11-03 03:37:23,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-03 03:37:23,661 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:37:23,662 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:37:23,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-03 03:37:23,662 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-11-03 03:37:23,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:37:23,663 INFO L85 PathProgramCache]: Analyzing trace with hash -1034891147, now seen corresponding path program 7 times [2022-11-03 03:37:23,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:37:23,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962351336] [2022-11-03 03:37:23,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:37:23,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:37:23,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:37:24,843 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 03:37:24,844 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:37:24,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962351336] [2022-11-03 03:37:24,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962351336] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:37:24,844 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:37:24,844 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-03 03:37:24,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103695771] [2022-11-03 03:37:24,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:37:24,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-03 03:37:24,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:37:24,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-03 03:37:24,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-11-03 03:37:24,848 INFO L87 Difference]: Start difference. First operand 1822 states and 4049 transitions. Second operand has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 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 03:37:30,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:37:30,254 INFO L93 Difference]: Finished difference Result 2585 states and 5717 transitions. [2022-11-03 03:37:30,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-03 03:37:30,255 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 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 15 [2022-11-03 03:37:30,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:37:30,258 INFO L225 Difference]: With dead ends: 2585 [2022-11-03 03:37:30,258 INFO L226 Difference]: Without dead ends: 2585 [2022-11-03 03:37:30,259 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=526, Invalid=1366, Unknown=0, NotChecked=0, Total=1892 [2022-11-03 03:37:30,260 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 491 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 3295 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 491 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 3343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 3295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:37:30,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [491 Valid, 19 Invalid, 3343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 3295 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-11-03 03:37:30,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2585 states. [2022-11-03 03:37:30,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2585 to 1799. [2022-11-03 03:37:30,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1799 states, 1789 states have (on average 2.234768026830632) internal successors, (3998), 1798 states have internal predecessors, (3998), 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 03:37:30,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1799 states to 1799 states and 3998 transitions. [2022-11-03 03:37:30,304 INFO L78 Accepts]: Start accepts. Automaton has 1799 states and 3998 transitions. Word has length 15 [2022-11-03 03:37:30,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:37:30,304 INFO L495 AbstractCegarLoop]: Abstraction has 1799 states and 3998 transitions. [2022-11-03 03:37:30,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 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 03:37:30,305 INFO L276 IsEmpty]: Start isEmpty. Operand 1799 states and 3998 transitions. [2022-11-03 03:37:30,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-03 03:37:30,306 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:37:30,306 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:37:30,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-03 03:37:30,306 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-11-03 03:37:30,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:37:30,307 INFO L85 PathProgramCache]: Analyzing trace with hash 2121253747, now seen corresponding path program 8 times [2022-11-03 03:37:30,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:37:30,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624386450] [2022-11-03 03:37:30,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:37:30,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:37:30,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:37:31,848 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 03:37:31,848 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:37:31,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624386450] [2022-11-03 03:37:31,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624386450] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:37:31,849 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:37:31,849 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-03 03:37:31,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918721906] [2022-11-03 03:37:31,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:37:31,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-03 03:37:31,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:37:31,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-03 03:37:31,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2022-11-03 03:37:31,850 INFO L87 Difference]: Start difference. First operand 1799 states and 3998 transitions. Second operand has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 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 03:37:33,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:37:33,771 INFO L93 Difference]: Finished difference Result 2337 states and 5140 transitions. [2022-11-03 03:37:33,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-03 03:37:33,771 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 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 15 [2022-11-03 03:37:33,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:37:33,774 INFO L225 Difference]: With dead ends: 2337 [2022-11-03 03:37:33,774 INFO L226 Difference]: Without dead ends: 2337 [2022-11-03 03:37:33,774 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=125, Invalid=295, Unknown=0, NotChecked=0, Total=420 [2022-11-03 03:37:33,774 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 296 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 1308 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 1336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-03 03:37:33,775 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [296 Valid, 19 Invalid, 1336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1308 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-03 03:37:33,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2337 states. [2022-11-03 03:37:33,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2337 to 1731. [2022-11-03 03:37:33,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1731 states, 1721 states have (on average 2.233004067402673) internal successors, (3843), 1730 states have internal predecessors, (3843), 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 03:37:33,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1731 states to 1731 states and 3843 transitions. [2022-11-03 03:37:33,804 INFO L78 Accepts]: Start accepts. Automaton has 1731 states and 3843 transitions. Word has length 15 [2022-11-03 03:37:33,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:37:33,804 INFO L495 AbstractCegarLoop]: Abstraction has 1731 states and 3843 transitions. [2022-11-03 03:37:33,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 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 03:37:33,804 INFO L276 IsEmpty]: Start isEmpty. Operand 1731 states and 3843 transitions. [2022-11-03 03:37:33,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-03 03:37:33,805 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:37:33,806 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:37:33,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-03 03:37:33,806 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-11-03 03:37:33,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:37:33,806 INFO L85 PathProgramCache]: Analyzing trace with hash -690722715, now seen corresponding path program 9 times [2022-11-03 03:37:33,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:37:33,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378575038] [2022-11-03 03:37:33,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:37:33,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:37:33,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:37:35,004 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 03:37:35,004 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:37:35,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378575038] [2022-11-03 03:37:35,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378575038] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:37:35,005 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:37:35,005 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-03 03:37:35,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570212839] [2022-11-03 03:37:35,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:37:35,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-03 03:37:35,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:37:35,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-03 03:37:35,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-11-03 03:37:35,006 INFO L87 Difference]: Start difference. First operand 1731 states and 3843 transitions. Second operand has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 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 03:37:39,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:37:39,468 INFO L93 Difference]: Finished difference Result 2409 states and 5307 transitions. [2022-11-03 03:37:39,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-03 03:37:39,468 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 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 15 [2022-11-03 03:37:39,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:37:39,471 INFO L225 Difference]: With dead ends: 2409 [2022-11-03 03:37:39,471 INFO L226 Difference]: Without dead ends: 2409 [2022-11-03 03:37:39,472 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=341, Invalid=849, Unknown=0, NotChecked=0, Total=1190 [2022-11-03 03:37:39,473 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 468 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 2872 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 468 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 2908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 2872 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-03 03:37:39,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [468 Valid, 35 Invalid, 2908 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 2872 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-03 03:37:39,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2409 states. [2022-11-03 03:37:39,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2409 to 1687. [2022-11-03 03:37:39,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1687 states, 1677 states have (on average 2.225998807394156) internal successors, (3733), 1686 states have internal predecessors, (3733), 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 03:37:39,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1687 states to 1687 states and 3733 transitions. [2022-11-03 03:37:39,505 INFO L78 Accepts]: Start accepts. Automaton has 1687 states and 3733 transitions. Word has length 15 [2022-11-03 03:37:39,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:37:39,506 INFO L495 AbstractCegarLoop]: Abstraction has 1687 states and 3733 transitions. [2022-11-03 03:37:39,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 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 03:37:39,506 INFO L276 IsEmpty]: Start isEmpty. Operand 1687 states and 3733 transitions. [2022-11-03 03:37:39,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-03 03:37:39,507 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:37:39,507 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:37:39,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-03 03:37:39,507 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-11-03 03:37:39,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:37:39,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1452451710, now seen corresponding path program 1 times [2022-11-03 03:37:39,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:37:39,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441044489] [2022-11-03 03:37:39,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:37:39,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:37:39,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:37:41,167 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 03:37:41,168 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:37:41,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441044489] [2022-11-03 03:37:41,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441044489] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:37:41,168 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:37:41,168 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-03 03:37:41,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441633511] [2022-11-03 03:37:41,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:37:41,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-03 03:37:41,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:37:41,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-03 03:37:41,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-11-03 03:37:41,169 INFO L87 Difference]: Start difference. First operand 1687 states and 3733 transitions. Second operand has 14 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 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 03:37:45,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:37:45,587 INFO L93 Difference]: Finished difference Result 2998 states and 6651 transitions. [2022-11-03 03:37:45,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-03 03:37:45,588 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 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 17 [2022-11-03 03:37:45,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:37:45,591 INFO L225 Difference]: With dead ends: 2998 [2022-11-03 03:37:45,592 INFO L226 Difference]: Without dead ends: 2998 [2022-11-03 03:37:45,592 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=314, Invalid=808, Unknown=0, NotChecked=0, Total=1122 [2022-11-03 03:37:45,593 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 508 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 3129 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 508 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 3175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 3129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:37:45,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [508 Valid, 35 Invalid, 3175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 3129 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-11-03 03:37:45,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2998 states. [2022-11-03 03:37:45,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2998 to 1821. [2022-11-03 03:37:45,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1821 states, 1811 states have (on average 2.242959690778575) internal successors, (4062), 1820 states have internal predecessors, (4062), 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 03:37:45,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1821 states to 1821 states and 4062 transitions. [2022-11-03 03:37:45,633 INFO L78 Accepts]: Start accepts. Automaton has 1821 states and 4062 transitions. Word has length 17 [2022-11-03 03:37:45,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:37:45,633 INFO L495 AbstractCegarLoop]: Abstraction has 1821 states and 4062 transitions. [2022-11-03 03:37:45,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 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 03:37:45,633 INFO L276 IsEmpty]: Start isEmpty. Operand 1821 states and 4062 transitions. [2022-11-03 03:37:45,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-03 03:37:45,635 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:37:45,635 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:37:45,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-03 03:37:45,635 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-11-03 03:37:45,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:37:45,636 INFO L85 PathProgramCache]: Analyzing trace with hash -957308336, now seen corresponding path program 2 times [2022-11-03 03:37:45,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:37:45,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682237145] [2022-11-03 03:37:45,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:37:45,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:37:45,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:37:48,585 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 03:37:48,585 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:37:48,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682237145] [2022-11-03 03:37:48,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682237145] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:37:48,585 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:37:48,585 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-03 03:37:48,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609708527] [2022-11-03 03:37:48,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:37:48,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-03 03:37:48,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:37:48,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-03 03:37:48,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2022-11-03 03:37:48,587 INFO L87 Difference]: Start difference. First operand 1821 states and 4062 transitions. Second operand has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 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 03:37:55,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:37:55,722 INFO L93 Difference]: Finished difference Result 3850 states and 8647 transitions. [2022-11-03 03:37:55,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-03 03:37:55,722 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 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 17 [2022-11-03 03:37:55,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:37:55,727 INFO L225 Difference]: With dead ends: 3850 [2022-11-03 03:37:55,727 INFO L226 Difference]: Without dead ends: 3850 [2022-11-03 03:37:55,728 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=399, Invalid=1161, Unknown=0, NotChecked=0, Total=1560 [2022-11-03 03:37:55,728 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 542 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 3012 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 542 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 3088 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 3012 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:37:55,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [542 Valid, 19 Invalid, 3088 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 3012 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-11-03 03:37:55,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3850 states. [2022-11-03 03:37:55,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3850 to 1864. [2022-11-03 03:37:55,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1864 states, 1854 states have (on average 2.2518878101402375) internal successors, (4175), 1863 states have internal predecessors, (4175), 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 03:37:55,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1864 states to 1864 states and 4175 transitions. [2022-11-03 03:37:55,773 INFO L78 Accepts]: Start accepts. Automaton has 1864 states and 4175 transitions. Word has length 17 [2022-11-03 03:37:55,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:37:55,774 INFO L495 AbstractCegarLoop]: Abstraction has 1864 states and 4175 transitions. [2022-11-03 03:37:55,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 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 03:37:55,774 INFO L276 IsEmpty]: Start isEmpty. Operand 1864 states and 4175 transitions. [2022-11-03 03:37:55,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-03 03:37:55,775 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:37:55,775 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:37:55,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-03 03:37:55,776 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-11-03 03:37:55,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:37:55,776 INFO L85 PathProgramCache]: Analyzing trace with hash -948082736, now seen corresponding path program 3 times [2022-11-03 03:37:55,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:37:55,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036384651] [2022-11-03 03:37:55,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:37:55,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:37:55,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:37:57,699 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 03:37:57,699 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:37:57,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036384651] [2022-11-03 03:37:57,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036384651] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:37:57,700 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:37:57,700 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-03 03:37:57,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645918352] [2022-11-03 03:37:57,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:37:57,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-03 03:37:57,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:37:57,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-03 03:37:57,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2022-11-03 03:37:57,701 INFO L87 Difference]: Start difference. First operand 1864 states and 4175 transitions. Second operand has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 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 03:38:04,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:38:04,246 INFO L93 Difference]: Finished difference Result 3625 states and 8135 transitions. [2022-11-03 03:38:04,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-03 03:38:04,246 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 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 17 [2022-11-03 03:38:04,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:38:04,250 INFO L225 Difference]: With dead ends: 3625 [2022-11-03 03:38:04,250 INFO L226 Difference]: Without dead ends: 3625 [2022-11-03 03:38:04,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 338 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=398, Invalid=1408, Unknown=0, NotChecked=0, Total=1806 [2022-11-03 03:38:04,251 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 533 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 3294 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 533 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 3359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 3294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-03 03:38:04,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [533 Valid, 19 Invalid, 3359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 3294 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-11-03 03:38:04,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3625 states. [2022-11-03 03:38:04,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3625 to 1887. [2022-11-03 03:38:04,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1887 states, 1877 states have (on average 2.2557272242940862) internal successors, (4234), 1886 states have internal predecessors, (4234), 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 03:38:04,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1887 states to 1887 states and 4234 transitions. [2022-11-03 03:38:04,299 INFO L78 Accepts]: Start accepts. Automaton has 1887 states and 4234 transitions. Word has length 17 [2022-11-03 03:38:04,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:38:04,300 INFO L495 AbstractCegarLoop]: Abstraction has 1887 states and 4234 transitions. [2022-11-03 03:38:04,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 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 03:38:04,300 INFO L276 IsEmpty]: Start isEmpty. Operand 1887 states and 4234 transitions. [2022-11-03 03:38:04,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-03 03:38:04,301 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:38:04,302 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:38:04,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-03 03:38:04,302 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-11-03 03:38:04,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:38:04,302 INFO L85 PathProgramCache]: Analyzing trace with hash 1459006380, now seen corresponding path program 4 times [2022-11-03 03:38:04,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:38:04,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840887496] [2022-11-03 03:38:04,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:38:04,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:38:04,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:38:05,987 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 03:38:05,987 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:38:05,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840887496] [2022-11-03 03:38:05,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840887496] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:38:05,987 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:38:05,988 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-03 03:38:05,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047881366] [2022-11-03 03:38:05,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:38:05,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-03 03:38:05,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:38:05,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-03 03:38:05,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2022-11-03 03:38:05,989 INFO L87 Difference]: Start difference. First operand 1887 states and 4234 transitions. Second operand has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 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 03:38:15,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:38:15,357 INFO L93 Difference]: Finished difference Result 4147 states and 9297 transitions. [2022-11-03 03:38:15,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-03 03:38:15,358 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 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 17 [2022-11-03 03:38:15,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:38:15,363 INFO L225 Difference]: With dead ends: 4147 [2022-11-03 03:38:15,363 INFO L226 Difference]: Without dead ends: 4147 [2022-11-03 03:38:15,363 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 455 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=492, Invalid=1670, Unknown=0, NotChecked=0, Total=2162 [2022-11-03 03:38:15,364 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 694 mSDsluCounter, 448 mSDsCounter, 0 mSdLazyCounter, 4215 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 694 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 4321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 4215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-11-03 03:38:15,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [694 Valid, 35 Invalid, 4321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 4215 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-11-03 03:38:15,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4147 states. [2022-11-03 03:38:15,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4147 to 1904. [2022-11-03 03:38:15,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1904 states, 1894 states have (on average 2.255015839493136) internal successors, (4271), 1903 states have internal predecessors, (4271), 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 03:38:15,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1904 states to 1904 states and 4271 transitions. [2022-11-03 03:38:15,411 INFO L78 Accepts]: Start accepts. Automaton has 1904 states and 4271 transitions. Word has length 17 [2022-11-03 03:38:15,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:38:15,411 INFO L495 AbstractCegarLoop]: Abstraction has 1904 states and 4271 transitions. [2022-11-03 03:38:15,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 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 03:38:15,412 INFO L276 IsEmpty]: Start isEmpty. Operand 1904 states and 4271 transitions. [2022-11-03 03:38:15,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-03 03:38:15,413 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:38:15,413 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:38:15,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-11-03 03:38:15,413 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-11-03 03:38:15,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:38:15,414 INFO L85 PathProgramCache]: Analyzing trace with hash -243057106, now seen corresponding path program 5 times [2022-11-03 03:38:15,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:38:15,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968647956] [2022-11-03 03:38:15,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:38:15,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:38:15,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:38:16,690 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 03:38:16,690 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:38:16,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968647956] [2022-11-03 03:38:16,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968647956] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:38:16,690 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:38:16,690 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-03 03:38:16,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684683960] [2022-11-03 03:38:16,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:38:16,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-03 03:38:16,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:38:16,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-03 03:38:16,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2022-11-03 03:38:16,692 INFO L87 Difference]: Start difference. First operand 1904 states and 4271 transitions. Second operand has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 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 03:38:22,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:38:22,631 INFO L93 Difference]: Finished difference Result 3341 states and 7482 transitions. [2022-11-03 03:38:22,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-03 03:38:22,632 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 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 17 [2022-11-03 03:38:22,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:38:22,636 INFO L225 Difference]: With dead ends: 3341 [2022-11-03 03:38:22,636 INFO L226 Difference]: Without dead ends: 3341 [2022-11-03 03:38:22,636 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=460, Invalid=1262, Unknown=0, NotChecked=0, Total=1722 [2022-11-03 03:38:22,637 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 595 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 3674 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 595 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 3734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 3674 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-11-03 03:38:22,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [595 Valid, 35 Invalid, 3734 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 3674 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-11-03 03:38:22,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3341 states. [2022-11-03 03:38:22,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3341 to 1863. [2022-11-03 03:38:22,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1863 states, 1853 states have (on average 2.2514840798704805) internal successors, (4172), 1862 states have internal predecessors, (4172), 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 03:38:22,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1863 states to 1863 states and 4172 transitions. [2022-11-03 03:38:22,684 INFO L78 Accepts]: Start accepts. Automaton has 1863 states and 4172 transitions. Word has length 17 [2022-11-03 03:38:22,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:38:22,684 INFO L495 AbstractCegarLoop]: Abstraction has 1863 states and 4172 transitions. [2022-11-03 03:38:22,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 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 03:38:22,684 INFO L276 IsEmpty]: Start isEmpty. Operand 1863 states and 4172 transitions. [2022-11-03 03:38:22,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-03 03:38:22,686 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:38:22,686 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:38:22,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-11-03 03:38:22,686 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-11-03 03:38:22,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:38:22,687 INFO L85 PathProgramCache]: Analyzing trace with hash 1096061368, now seen corresponding path program 6 times [2022-11-03 03:38:22,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:38:22,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759341381] [2022-11-03 03:38:22,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:38:22,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:38:22,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:38:24,469 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 03:38:24,469 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:38:24,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759341381] [2022-11-03 03:38:24,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759341381] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:38:24,469 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:38:24,469 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-03 03:38:24,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754607033] [2022-11-03 03:38:24,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:38:24,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-03 03:38:24,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:38:24,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-03 03:38:24,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2022-11-03 03:38:24,470 INFO L87 Difference]: Start difference. First operand 1863 states and 4172 transitions. Second operand has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 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 03:38:29,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:38:29,152 INFO L93 Difference]: Finished difference Result 3020 states and 6782 transitions. [2022-11-03 03:38:29,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-03 03:38:29,153 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 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 17 [2022-11-03 03:38:29,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:38:29,157 INFO L225 Difference]: With dead ends: 3020 [2022-11-03 03:38:29,157 INFO L226 Difference]: Without dead ends: 3020 [2022-11-03 03:38:29,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=269, Invalid=991, Unknown=0, NotChecked=0, Total=1260 [2022-11-03 03:38:29,158 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 476 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 2967 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 476 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 3028 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 2967 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:38:29,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [476 Valid, 35 Invalid, 3028 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 2967 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-11-03 03:38:29,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3020 states. [2022-11-03 03:38:29,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3020 to 1868. [2022-11-03 03:38:29,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1868 states, 1858 states have (on average 2.2518837459634016) internal successors, (4184), 1867 states have internal predecessors, (4184), 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 03:38:29,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1868 states to 1868 states and 4184 transitions. [2022-11-03 03:38:29,201 INFO L78 Accepts]: Start accepts. Automaton has 1868 states and 4184 transitions. Word has length 17 [2022-11-03 03:38:29,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:38:29,202 INFO L495 AbstractCegarLoop]: Abstraction has 1868 states and 4184 transitions. [2022-11-03 03:38:29,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 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 03:38:29,202 INFO L276 IsEmpty]: Start isEmpty. Operand 1868 states and 4184 transitions. [2022-11-03 03:38:29,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-03 03:38:29,203 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:38:29,203 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:38:29,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-11-03 03:38:29,204 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-11-03 03:38:29,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:38:29,204 INFO L85 PathProgramCache]: Analyzing trace with hash -791816812, now seen corresponding path program 7 times [2022-11-03 03:38:29,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:38:29,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722258126] [2022-11-03 03:38:29,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:38:29,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:38:29,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:38:30,823 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 03:38:30,823 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:38:30,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722258126] [2022-11-03 03:38:30,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722258126] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:38:30,823 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:38:30,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-03 03:38:30,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140601364] [2022-11-03 03:38:30,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:38:30,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-03 03:38:30,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:38:30,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-03 03:38:30,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2022-11-03 03:38:30,825 INFO L87 Difference]: Start difference. First operand 1868 states and 4184 transitions. Second operand has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 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 03:38:37,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:38:37,049 INFO L93 Difference]: Finished difference Result 3266 states and 7340 transitions. [2022-11-03 03:38:37,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-03 03:38:37,050 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 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 17 [2022-11-03 03:38:37,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:38:37,054 INFO L225 Difference]: With dead ends: 3266 [2022-11-03 03:38:37,054 INFO L226 Difference]: Without dead ends: 3266 [2022-11-03 03:38:37,054 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=358, Invalid=1282, Unknown=0, NotChecked=0, Total=1640 [2022-11-03 03:38:37,055 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 486 mSDsluCounter, 438 mSDsCounter, 0 mSdLazyCounter, 3920 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 486 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 3988 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 3920 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-03 03:38:37,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [486 Valid, 35 Invalid, 3988 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 3920 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-11-03 03:38:37,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3266 states. [2022-11-03 03:38:37,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3266 to 1891. [2022-11-03 03:38:37,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1891 states, 1881 states have (on average 2.2535885167464116) internal successors, (4239), 1890 states have internal predecessors, (4239), 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 03:38:37,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1891 states to 1891 states and 4239 transitions. [2022-11-03 03:38:37,099 INFO L78 Accepts]: Start accepts. Automaton has 1891 states and 4239 transitions. Word has length 17 [2022-11-03 03:38:37,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:38:37,100 INFO L495 AbstractCegarLoop]: Abstraction has 1891 states and 4239 transitions. [2022-11-03 03:38:37,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 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 03:38:37,100 INFO L276 IsEmpty]: Start isEmpty. Operand 1891 states and 4239 transitions. [2022-11-03 03:38:37,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-03 03:38:37,102 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:38:37,102 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:38:37,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-11-03 03:38:37,102 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-11-03 03:38:37,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:38:37,103 INFO L85 PathProgramCache]: Analyzing trace with hash 1801086998, now seen corresponding path program 8 times [2022-11-03 03:38:37,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:38:37,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092977285] [2022-11-03 03:38:37,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:38:37,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:38:37,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:38:38,236 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 03:38:38,236 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:38:38,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092977285] [2022-11-03 03:38:38,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092977285] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:38:38,236 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:38:38,236 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-03 03:38:38,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198141480] [2022-11-03 03:38:38,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:38:38,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-03 03:38:38,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:38:38,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-03 03:38:38,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2022-11-03 03:38:38,238 INFO L87 Difference]: Start difference. First operand 1891 states and 4239 transitions. Second operand has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 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 03:38:43,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:38:43,985 INFO L93 Difference]: Finished difference Result 3526 states and 7949 transitions. [2022-11-03 03:38:43,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-11-03 03:38:43,985 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 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 17 [2022-11-03 03:38:43,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:38:43,990 INFO L225 Difference]: With dead ends: 3526 [2022-11-03 03:38:43,990 INFO L226 Difference]: Without dead ends: 3526 [2022-11-03 03:38:43,991 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 473 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=527, Invalid=1729, Unknown=0, NotChecked=0, Total=2256 [2022-11-03 03:38:43,991 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 742 mSDsluCounter, 402 mSDsCounter, 0 mSdLazyCounter, 3612 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 742 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 3674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 3612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-11-03 03:38:43,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [742 Valid, 35 Invalid, 3674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 3612 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-11-03 03:38:43,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3526 states. [2022-11-03 03:38:44,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3526 to 1849. [2022-11-03 03:38:44,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1849 states, 1839 states have (on average 2.248504622077216) internal successors, (4135), 1848 states have internal predecessors, (4135), 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 03:38:44,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1849 states to 1849 states and 4135 transitions. [2022-11-03 03:38:44,021 INFO L78 Accepts]: Start accepts. Automaton has 1849 states and 4135 transitions. Word has length 17 [2022-11-03 03:38:44,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:38:44,021 INFO L495 AbstractCegarLoop]: Abstraction has 1849 states and 4135 transitions. [2022-11-03 03:38:44,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 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 03:38:44,021 INFO L276 IsEmpty]: Start isEmpty. Operand 1849 states and 4135 transitions. [2022-11-03 03:38:44,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-03 03:38:44,022 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:38:44,022 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:38:44,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-11-03 03:38:44,023 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-11-03 03:38:44,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:38:44,023 INFO L85 PathProgramCache]: Analyzing trace with hash 301635960, now seen corresponding path program 9 times [2022-11-03 03:38:44,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:38:44,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922901498] [2022-11-03 03:38:44,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:38:44,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:38:44,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:38:45,113 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 03:38:45,113 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:38:45,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922901498] [2022-11-03 03:38:45,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922901498] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:38:45,113 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:38:45,113 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-03 03:38:45,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432891833] [2022-11-03 03:38:45,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:38:45,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-03 03:38:45,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:38:45,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-03 03:38:45,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2022-11-03 03:38:45,115 INFO L87 Difference]: Start difference. First operand 1849 states and 4135 transitions. Second operand has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 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 03:38:51,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:38:51,797 INFO L93 Difference]: Finished difference Result 3252 states and 7290 transitions. [2022-11-03 03:38:51,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-11-03 03:38:51,798 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 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 17 [2022-11-03 03:38:51,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:38:51,802 INFO L225 Difference]: With dead ends: 3252 [2022-11-03 03:38:51,802 INFO L226 Difference]: Without dead ends: 3252 [2022-11-03 03:38:51,803 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 562 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=564, Invalid=2088, Unknown=0, NotChecked=0, Total=2652 [2022-11-03 03:38:51,803 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 666 mSDsluCounter, 525 mSDsCounter, 0 mSdLazyCounter, 4858 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 666 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 4930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 4858 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:38:51,803 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [666 Valid, 35 Invalid, 4930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 4858 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-11-03 03:38:51,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3252 states. [2022-11-03 03:38:51,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3252 to 1871. [2022-11-03 03:38:51,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1871 states, 1861 states have (on average 2.247716281569049) internal successors, (4183), 1870 states have internal predecessors, (4183), 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 03:38:51,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1871 states to 1871 states and 4183 transitions. [2022-11-03 03:38:51,835 INFO L78 Accepts]: Start accepts. Automaton has 1871 states and 4183 transitions. Word has length 17 [2022-11-03 03:38:51,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:38:51,836 INFO L495 AbstractCegarLoop]: Abstraction has 1871 states and 4183 transitions. [2022-11-03 03:38:51,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 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 03:38:51,836 INFO L276 IsEmpty]: Start isEmpty. Operand 1871 states and 4183 transitions. [2022-11-03 03:38:51,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-03 03:38:51,837 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:38:51,837 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:38:51,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-11-03 03:38:51,838 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-11-03 03:38:51,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:38:51,838 INFO L85 PathProgramCache]: Analyzing trace with hash -2145234858, now seen corresponding path program 10 times [2022-11-03 03:38:51,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:38:51,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829097768] [2022-11-03 03:38:51,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:38:51,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:38:51,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:38:52,830 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 03:38:52,830 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:38:52,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829097768] [2022-11-03 03:38:52,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829097768] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:38:52,830 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:38:52,830 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-03 03:38:52,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901619674] [2022-11-03 03:38:52,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:38:52,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-03 03:38:52,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:38:52,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-03 03:38:52,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2022-11-03 03:38:52,832 INFO L87 Difference]: Start difference. First operand 1871 states and 4183 transitions. Second operand has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 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 03:38:59,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:38:59,764 INFO L93 Difference]: Finished difference Result 2944 states and 6597 transitions. [2022-11-03 03:38:59,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-11-03 03:38:59,765 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 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 17 [2022-11-03 03:38:59,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:38:59,769 INFO L225 Difference]: With dead ends: 2944 [2022-11-03 03:38:59,769 INFO L226 Difference]: Without dead ends: 2944 [2022-11-03 03:38:59,769 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 429 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=612, Invalid=1938, Unknown=0, NotChecked=0, Total=2550 [2022-11-03 03:38:59,770 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 635 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 4285 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 635 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 4355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 4285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-03 03:38:59,770 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [635 Valid, 35 Invalid, 4355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 4285 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-11-03 03:38:59,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2944 states. [2022-11-03 03:38:59,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2944 to 1871. [2022-11-03 03:38:59,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1871 states, 1861 states have (on average 2.247716281569049) internal successors, (4183), 1870 states have internal predecessors, (4183), 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 03:38:59,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1871 states to 1871 states and 4183 transitions. [2022-11-03 03:38:59,797 INFO L78 Accepts]: Start accepts. Automaton has 1871 states and 4183 transitions. Word has length 17 [2022-11-03 03:38:59,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:38:59,797 INFO L495 AbstractCegarLoop]: Abstraction has 1871 states and 4183 transitions. [2022-11-03 03:38:59,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 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 03:38:59,797 INFO L276 IsEmpty]: Start isEmpty. Operand 1871 states and 4183 transitions. [2022-11-03 03:38:59,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-03 03:38:59,799 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:38:59,799 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:38:59,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-11-03 03:38:59,799 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-11-03 03:38:59,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:38:59,800 INFO L85 PathProgramCache]: Analyzing trace with hash -1077859208, now seen corresponding path program 11 times [2022-11-03 03:38:59,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:38:59,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656436555] [2022-11-03 03:38:59,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:38:59,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:38:59,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:39:01,889 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 03:39:01,889 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:39:01,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656436555] [2022-11-03 03:39:01,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656436555] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:39:01,890 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:39:01,890 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-03 03:39:01,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410827460] [2022-11-03 03:39:01,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:39:01,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-03 03:39:01,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:39:01,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-03 03:39:01,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2022-11-03 03:39:01,891 INFO L87 Difference]: Start difference. First operand 1871 states and 4183 transitions. Second operand has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 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 03:39:09,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:39:09,688 INFO L93 Difference]: Finished difference Result 3268 states and 7308 transitions. [2022-11-03 03:39:09,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-03 03:39:09,689 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 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 17 [2022-11-03 03:39:09,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:39:09,693 INFO L225 Difference]: With dead ends: 3268 [2022-11-03 03:39:09,693 INFO L226 Difference]: Without dead ends: 3268 [2022-11-03 03:39:09,694 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 411 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=435, Invalid=1545, Unknown=0, NotChecked=0, Total=1980 [2022-11-03 03:39:09,694 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 517 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 4168 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 517 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 4247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 4168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-11-03 03:39:09,694 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [517 Valid, 35 Invalid, 4247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 4168 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-11-03 03:39:09,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3268 states. [2022-11-03 03:39:09,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3268 to 1880. [2022-11-03 03:39:09,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1880 states, 1870 states have (on average 2.2481283422459892) internal successors, (4204), 1879 states have internal predecessors, (4204), 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 03:39:09,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1880 states to 1880 states and 4204 transitions. [2022-11-03 03:39:09,725 INFO L78 Accepts]: Start accepts. Automaton has 1880 states and 4204 transitions. Word has length 17 [2022-11-03 03:39:09,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:39:09,725 INFO L495 AbstractCegarLoop]: Abstraction has 1880 states and 4204 transitions. [2022-11-03 03:39:09,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 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 03:39:09,726 INFO L276 IsEmpty]: Start isEmpty. Operand 1880 states and 4204 transitions. [2022-11-03 03:39:09,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-03 03:39:09,727 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:39:09,727 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:39:09,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-11-03 03:39:09,728 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-11-03 03:39:09,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:39:09,728 INFO L85 PathProgramCache]: Analyzing trace with hash -710536178, now seen corresponding path program 12 times [2022-11-03 03:39:09,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:39:09,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489035831] [2022-11-03 03:39:09,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:39:09,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:39:09,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:39:11,222 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 03:39:11,223 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:39:11,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489035831] [2022-11-03 03:39:11,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489035831] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:39:11,223 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:39:11,223 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-03 03:39:11,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595485431] [2022-11-03 03:39:11,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:39:11,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-03 03:39:11,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:39:11,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-03 03:39:11,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2022-11-03 03:39:11,224 INFO L87 Difference]: Start difference. First operand 1880 states and 4204 transitions. Second operand has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 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 03:39:17,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:39:17,046 INFO L93 Difference]: Finished difference Result 3217 states and 7190 transitions. [2022-11-03 03:39:17,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-03 03:39:17,047 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 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 17 [2022-11-03 03:39:17,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:39:17,050 INFO L225 Difference]: With dead ends: 3217 [2022-11-03 03:39:17,051 INFO L226 Difference]: Without dead ends: 3217 [2022-11-03 03:39:17,051 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=410, Invalid=1230, Unknown=0, NotChecked=0, Total=1640 [2022-11-03 03:39:17,052 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 544 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 3126 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 544 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 3190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 3126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:39:17,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [544 Valid, 35 Invalid, 3190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 3126 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-11-03 03:39:17,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3217 states. [2022-11-03 03:39:17,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3217 to 1883. [2022-11-03 03:39:17,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1883 states, 1873 states have (on average 2.2482648158035237) internal successors, (4211), 1882 states have internal predecessors, (4211), 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 03:39:17,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1883 states to 1883 states and 4211 transitions. [2022-11-03 03:39:17,081 INFO L78 Accepts]: Start accepts. Automaton has 1883 states and 4211 transitions. Word has length 17 [2022-11-03 03:39:17,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:39:17,081 INFO L495 AbstractCegarLoop]: Abstraction has 1883 states and 4211 transitions. [2022-11-03 03:39:17,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 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 03:39:17,081 INFO L276 IsEmpty]: Start isEmpty. Operand 1883 states and 4211 transitions. [2022-11-03 03:39:17,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-03 03:39:17,083 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:39:17,083 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:39:17,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-11-03 03:39:17,083 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-11-03 03:39:17,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:39:17,084 INFO L85 PathProgramCache]: Analyzing trace with hash -141707148, now seen corresponding path program 13 times [2022-11-03 03:39:17,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:39:17,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399431562] [2022-11-03 03:39:17,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:39:17,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:39:17,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:39:18,471 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 03:39:18,471 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:39:18,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399431562] [2022-11-03 03:39:18,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399431562] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:39:18,472 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:39:18,472 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-03 03:39:18,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790599955] [2022-11-03 03:39:18,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:39:18,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-03 03:39:18,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:39:18,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-03 03:39:18,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2022-11-03 03:39:18,473 INFO L87 Difference]: Start difference. First operand 1883 states and 4211 transitions. Second operand has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 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 03:39:26,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:39:26,257 INFO L93 Difference]: Finished difference Result 3693 states and 8276 transitions. [2022-11-03 03:39:26,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-11-03 03:39:26,258 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 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 17 [2022-11-03 03:39:26,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:39:26,262 INFO L225 Difference]: With dead ends: 3693 [2022-11-03 03:39:26,262 INFO L226 Difference]: Without dead ends: 3693 [2022-11-03 03:39:26,263 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 545 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=527, Invalid=1923, Unknown=0, NotChecked=0, Total=2450 [2022-11-03 03:39:26,263 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 606 mSDsluCounter, 448 mSDsCounter, 0 mSdLazyCounter, 4245 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 606 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 4337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 4245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-11-03 03:39:26,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [606 Valid, 35 Invalid, 4337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 4245 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-11-03 03:39:26,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3693 states. [2022-11-03 03:39:26,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3693 to 1880. [2022-11-03 03:39:26,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1880 states, 1870 states have (on average 2.2481283422459892) internal successors, (4204), 1879 states have internal predecessors, (4204), 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 03:39:26,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1880 states to 1880 states and 4204 transitions. [2022-11-03 03:39:26,294 INFO L78 Accepts]: Start accepts. Automaton has 1880 states and 4204 transitions. Word has length 17 [2022-11-03 03:39:26,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:39:26,294 INFO L495 AbstractCegarLoop]: Abstraction has 1880 states and 4204 transitions. [2022-11-03 03:39:26,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 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 03:39:26,294 INFO L276 IsEmpty]: Start isEmpty. Operand 1880 states and 4204 transitions. [2022-11-03 03:39:26,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-03 03:39:26,295 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:39:26,295 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:39:26,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-11-03 03:39:26,296 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-11-03 03:39:26,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:39:26,296 INFO L85 PathProgramCache]: Analyzing trace with hash 1515044602, now seen corresponding path program 14 times [2022-11-03 03:39:26,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:39:26,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752319422] [2022-11-03 03:39:26,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:39:26,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:39:26,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:39:27,381 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 03:39:27,381 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:39:27,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752319422] [2022-11-03 03:39:27,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752319422] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:39:27,382 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:39:27,382 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-03 03:39:27,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718172913] [2022-11-03 03:39:27,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:39:27,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-03 03:39:27,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:39:27,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-03 03:39:27,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-11-03 03:39:27,383 INFO L87 Difference]: Start difference. First operand 1880 states and 4204 transitions. Second operand has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 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 03:39:33,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:39:33,291 INFO L93 Difference]: Finished difference Result 3161 states and 7072 transitions. [2022-11-03 03:39:33,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-11-03 03:39:33,292 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 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 17 [2022-11-03 03:39:33,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:39:33,296 INFO L225 Difference]: With dead ends: 3161 [2022-11-03 03:39:33,296 INFO L226 Difference]: Without dead ends: 3161 [2022-11-03 03:39:33,296 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=561, Invalid=1601, Unknown=0, NotChecked=0, Total=2162 [2022-11-03 03:39:33,297 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 706 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 3198 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 706 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 3272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 3198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:39:33,297 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [706 Valid, 35 Invalid, 3272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 3198 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-11-03 03:39:33,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3161 states. [2022-11-03 03:39:33,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3161 to 1842. [2022-11-03 03:39:33,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1842 states, 1832 states have (on average 2.2418122270742358) internal successors, (4107), 1841 states have internal predecessors, (4107), 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 03:39:33,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1842 states to 1842 states and 4107 transitions. [2022-11-03 03:39:33,324 INFO L78 Accepts]: Start accepts. Automaton has 1842 states and 4107 transitions. Word has length 17 [2022-11-03 03:39:33,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:39:33,324 INFO L495 AbstractCegarLoop]: Abstraction has 1842 states and 4107 transitions. [2022-11-03 03:39:33,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 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 03:39:33,324 INFO L276 IsEmpty]: Start isEmpty. Operand 1842 states and 4107 transitions. [2022-11-03 03:39:33,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-03 03:39:33,325 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:39:33,326 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:39:33,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-11-03 03:39:33,326 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-11-03 03:39:33,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:39:33,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1971590536, now seen corresponding path program 15 times [2022-11-03 03:39:33,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:39:33,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142556482] [2022-11-03 03:39:33,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:39:33,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:39:33,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:39:35,107 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 03:39:35,107 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:39:35,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142556482] [2022-11-03 03:39:35,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142556482] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:39:35,108 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:39:35,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-03 03:39:35,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222981054] [2022-11-03 03:39:35,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:39:35,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-03 03:39:35,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:39:35,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-03 03:39:35,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2022-11-03 03:39:35,109 INFO L87 Difference]: Start difference. First operand 1842 states and 4107 transitions. Second operand has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 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 03:39:40,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:39:40,434 INFO L93 Difference]: Finished difference Result 3774 states and 8532 transitions. [2022-11-03 03:39:40,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-03 03:39:40,434 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 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 17 [2022-11-03 03:39:40,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:39:40,453 INFO L225 Difference]: With dead ends: 3774 [2022-11-03 03:39:40,454 INFO L226 Difference]: Without dead ends: 3774 [2022-11-03 03:39:40,454 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=358, Invalid=1124, Unknown=0, NotChecked=0, Total=1482 [2022-11-03 03:39:40,454 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 524 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 2717 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 524 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 2812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 2717 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:39:40,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [524 Valid, 19 Invalid, 2812 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 2717 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-11-03 03:39:40,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3774 states. [2022-11-03 03:39:40,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3774 to 1879. [2022-11-03 03:39:40,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1879 states, 1869 states have (on average 2.2498662386302835) internal successors, (4205), 1878 states have internal predecessors, (4205), 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 03:39:40,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1879 states to 1879 states and 4205 transitions. [2022-11-03 03:39:40,483 INFO L78 Accepts]: Start accepts. Automaton has 1879 states and 4205 transitions. Word has length 17 [2022-11-03 03:39:40,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:39:40,483 INFO L495 AbstractCegarLoop]: Abstraction has 1879 states and 4205 transitions. [2022-11-03 03:39:40,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 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 03:39:40,484 INFO L276 IsEmpty]: Start isEmpty. Operand 1879 states and 4205 transitions. [2022-11-03 03:39:40,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-03 03:39:40,485 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:39:40,485 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:39:40,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-11-03 03:39:40,485 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-11-03 03:39:40,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:39:40,486 INFO L85 PathProgramCache]: Analyzing trace with hash -1051032518, now seen corresponding path program 16 times [2022-11-03 03:39:40,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:39:40,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015911698] [2022-11-03 03:39:40,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:39:40,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:39:40,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:39:42,167 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 03:39:42,168 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:39:42,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015911698] [2022-11-03 03:39:42,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015911698] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:39:42,168 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:39:42,168 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-03 03:39:42,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248819917] [2022-11-03 03:39:42,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:39:42,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-03 03:39:42,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:39:42,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-03 03:39:42,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2022-11-03 03:39:42,169 INFO L87 Difference]: Start difference. First operand 1879 states and 4205 transitions. Second operand has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 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 03:39:48,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:39:48,571 INFO L93 Difference]: Finished difference Result 3923 states and 8743 transitions. [2022-11-03 03:39:48,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-03 03:39:48,572 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 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 17 [2022-11-03 03:39:48,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:39:48,576 INFO L225 Difference]: With dead ends: 3923 [2022-11-03 03:39:48,576 INFO L226 Difference]: Without dead ends: 3923 [2022-11-03 03:39:48,577 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 291 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=366, Invalid=1274, Unknown=0, NotChecked=0, Total=1640 [2022-11-03 03:39:48,577 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 614 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 2552 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 614 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 2628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 2552 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:39:48,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [614 Valid, 13 Invalid, 2628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 2552 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-11-03 03:39:48,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3923 states. [2022-11-03 03:39:48,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3923 to 1886. [2022-11-03 03:39:48,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1886 states, 1876 states have (on average 2.2505330490405115) internal successors, (4222), 1885 states have internal predecessors, (4222), 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 03:39:48,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1886 states to 1886 states and 4222 transitions. [2022-11-03 03:39:48,608 INFO L78 Accepts]: Start accepts. Automaton has 1886 states and 4222 transitions. Word has length 17 [2022-11-03 03:39:48,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:39:48,608 INFO L495 AbstractCegarLoop]: Abstraction has 1886 states and 4222 transitions. [2022-11-03 03:39:48,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 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 03:39:48,608 INFO L276 IsEmpty]: Start isEmpty. Operand 1886 states and 4222 transitions. [2022-11-03 03:39:48,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-03 03:39:48,609 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:39:48,610 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:39:48,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-11-03 03:39:48,610 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-11-03 03:39:48,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:39:48,610 INFO L85 PathProgramCache]: Analyzing trace with hash -1041806918, now seen corresponding path program 17 times [2022-11-03 03:39:48,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:39:48,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074502505] [2022-11-03 03:39:48,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:39:48,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:39:48,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:39:50,362 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 03:39:50,363 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:39:50,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074502505] [2022-11-03 03:39:50,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074502505] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:39:50,363 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:39:50,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-03 03:39:50,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902944347] [2022-11-03 03:39:50,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:39:50,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-03 03:39:50,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:39:50,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-03 03:39:50,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2022-11-03 03:39:50,365 INFO L87 Difference]: Start difference. First operand 1886 states and 4222 transitions. Second operand has 12 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 11 states have internal predecessors, (17), 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 03:39:53,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:39:53,820 INFO L93 Difference]: Finished difference Result 2999 states and 6747 transitions. [2022-11-03 03:39:53,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-03 03:39:53,821 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 11 states have internal predecessors, (17), 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 17 [2022-11-03 03:39:53,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:39:53,824 INFO L225 Difference]: With dead ends: 2999 [2022-11-03 03:39:53,824 INFO L226 Difference]: Without dead ends: 2999 [2022-11-03 03:39:53,825 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=120, Invalid=386, Unknown=0, NotChecked=0, Total=506 [2022-11-03 03:39:53,825 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 344 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 1866 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 1915 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1866 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:39:53,825 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [344 Valid, 35 Invalid, 1915 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1866 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-03 03:39:53,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2999 states. [2022-11-03 03:39:53,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2999 to 1881. [2022-11-03 03:39:53,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1881 states, 1871 states have (on average 2.25013361838589) internal successors, (4210), 1880 states have internal predecessors, (4210), 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 03:39:53,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1881 states to 1881 states and 4210 transitions. [2022-11-03 03:39:53,855 INFO L78 Accepts]: Start accepts. Automaton has 1881 states and 4210 transitions. Word has length 17 [2022-11-03 03:39:53,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:39:53,855 INFO L495 AbstractCegarLoop]: Abstraction has 1881 states and 4210 transitions. [2022-11-03 03:39:53,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 11 states have internal predecessors, (17), 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 03:39:53,855 INFO L276 IsEmpty]: Start isEmpty. Operand 1881 states and 4210 transitions. [2022-11-03 03:39:53,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-03 03:39:53,856 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:39:53,857 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:39:53,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-11-03 03:39:53,857 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-11-03 03:39:53,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:39:53,857 INFO L85 PathProgramCache]: Analyzing trace with hash 834174732, now seen corresponding path program 18 times [2022-11-03 03:39:53,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:39:53,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121286925] [2022-11-03 03:39:53,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:39:53,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:39:53,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:39:55,675 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 03:39:55,675 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:39:55,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121286925] [2022-11-03 03:39:55,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121286925] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:39:55,675 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:39:55,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-03 03:39:55,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149151575] [2022-11-03 03:39:55,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:39:55,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-03 03:39:55,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:39:55,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-03 03:39:55,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2022-11-03 03:39:55,677 INFO L87 Difference]: Start difference. First operand 1881 states and 4210 transitions. Second operand has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 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 03:40:02,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:40:02,744 INFO L93 Difference]: Finished difference Result 3599 states and 8066 transitions. [2022-11-03 03:40:02,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-03 03:40:02,745 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 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 17 [2022-11-03 03:40:02,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:40:02,749 INFO L225 Difference]: With dead ends: 3599 [2022-11-03 03:40:02,749 INFO L226 Difference]: Without dead ends: 3599 [2022-11-03 03:40:02,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=370, Invalid=1270, Unknown=0, NotChecked=0, Total=1640 [2022-11-03 03:40:02,750 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 450 mSDsluCounter, 405 mSDsCounter, 0 mSdLazyCounter, 3926 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 450 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 3979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 3926 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:40:02,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [450 Valid, 19 Invalid, 3979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 3926 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-11-03 03:40:02,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3599 states. [2022-11-03 03:40:02,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3599 to 1879. [2022-11-03 03:40:02,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1879 states, 1869 states have (on average 2.2498662386302835) internal successors, (4205), 1878 states have internal predecessors, (4205), 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 03:40:02,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1879 states to 1879 states and 4205 transitions. [2022-11-03 03:40:02,779 INFO L78 Accepts]: Start accepts. Automaton has 1879 states and 4205 transitions. Word has length 17 [2022-11-03 03:40:02,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:40:02,779 INFO L495 AbstractCegarLoop]: Abstraction has 1879 states and 4205 transitions. [2022-11-03 03:40:02,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 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 03:40:02,779 INFO L276 IsEmpty]: Start isEmpty. Operand 1879 states and 4205 transitions. [2022-11-03 03:40:02,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-03 03:40:02,781 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:40:02,781 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:40:02,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-11-03 03:40:02,781 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-11-03 03:40:02,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:40:02,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1053703448, now seen corresponding path program 19 times [2022-11-03 03:40:02,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:40:02,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352787286] [2022-11-03 03:40:02,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:40:02,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:40:02,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:40:04,316 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 03:40:04,316 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:40:04,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352787286] [2022-11-03 03:40:04,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352787286] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:40:04,317 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:40:04,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-03 03:40:04,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939226427] [2022-11-03 03:40:04,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:40:04,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-03 03:40:04,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:40:04,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-03 03:40:04,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2022-11-03 03:40:04,318 INFO L87 Difference]: Start difference. First operand 1879 states and 4205 transitions. Second operand has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 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 03:40:11,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:40:11,820 INFO L93 Difference]: Finished difference Result 4223 states and 9512 transitions. [2022-11-03 03:40:11,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-03 03:40:11,821 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 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 17 [2022-11-03 03:40:11,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:40:11,826 INFO L225 Difference]: With dead ends: 4223 [2022-11-03 03:40:11,826 INFO L226 Difference]: Without dead ends: 4223 [2022-11-03 03:40:11,827 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 429 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=498, Invalid=1664, Unknown=0, NotChecked=0, Total=2162 [2022-11-03 03:40:11,827 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 692 mSDsluCounter, 415 mSDsCounter, 0 mSdLazyCounter, 3841 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 692 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 3930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 3841 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:40:11,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [692 Valid, 35 Invalid, 3930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 3841 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-11-03 03:40:11,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4223 states. [2022-11-03 03:40:11,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4223 to 1878. [2022-11-03 03:40:11,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1878 states, 1868 states have (on average 2.25) internal successors, (4203), 1877 states have internal predecessors, (4203), 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 03:40:11,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1878 states to 1878 states and 4203 transitions. [2022-11-03 03:40:11,862 INFO L78 Accepts]: Start accepts. Automaton has 1878 states and 4203 transitions. Word has length 17 [2022-11-03 03:40:11,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:40:11,863 INFO L495 AbstractCegarLoop]: Abstraction has 1878 states and 4203 transitions. [2022-11-03 03:40:11,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 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 03:40:11,863 INFO L276 IsEmpty]: Start isEmpty. Operand 1878 states and 4203 transitions. [2022-11-03 03:40:11,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-03 03:40:11,864 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:40:11,864 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:40:11,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-11-03 03:40:11,865 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-11-03 03:40:11,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:40:11,865 INFO L85 PathProgramCache]: Analyzing trace with hash -484874418, now seen corresponding path program 20 times [2022-11-03 03:40:11,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:40:11,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814164587] [2022-11-03 03:40:11,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:40:11,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:40:11,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:40:12,918 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 03:40:12,918 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:40:12,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814164587] [2022-11-03 03:40:12,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814164587] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:40:12,918 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:40:12,918 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-03 03:40:12,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486919500] [2022-11-03 03:40:12,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:40:12,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-03 03:40:12,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:40:12,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-03 03:40:12,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2022-11-03 03:40:12,920 INFO L87 Difference]: Start difference. First operand 1878 states and 4203 transitions. Second operand has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 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 03:40:17,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:40:17,314 INFO L93 Difference]: Finished difference Result 3122 states and 6979 transitions. [2022-11-03 03:40:17,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-03 03:40:17,315 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 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 17 [2022-11-03 03:40:17,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:40:17,320 INFO L225 Difference]: With dead ends: 3122 [2022-11-03 03:40:17,321 INFO L226 Difference]: Without dead ends: 3122 [2022-11-03 03:40:17,321 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=347, Invalid=913, Unknown=0, NotChecked=0, Total=1260 [2022-11-03 03:40:17,322 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 519 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 2809 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 519 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 2858 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 2809 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-03 03:40:17,322 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [519 Valid, 35 Invalid, 2858 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 2809 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-03 03:40:17,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3122 states. [2022-11-03 03:40:17,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3122 to 1830. [2022-11-03 03:40:17,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1830 states, 1820 states have (on average 2.2373626373626374) internal successors, (4072), 1829 states have internal predecessors, (4072), 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 03:40:17,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1830 states to 1830 states and 4072 transitions. [2022-11-03 03:40:17,351 INFO L78 Accepts]: Start accepts. Automaton has 1830 states and 4072 transitions. Word has length 17 [2022-11-03 03:40:17,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:40:17,352 INFO L495 AbstractCegarLoop]: Abstraction has 1830 states and 4072 transitions. [2022-11-03 03:40:17,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 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 03:40:17,352 INFO L276 IsEmpty]: Start isEmpty. Operand 1830 states and 4072 transitions. [2022-11-03 03:40:17,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-03 03:40:17,353 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:40:17,353 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:40:17,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-11-03 03:40:17,354 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-11-03 03:40:17,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:40:17,354 INFO L85 PathProgramCache]: Analyzing trace with hash 1548425962, now seen corresponding path program 21 times [2022-11-03 03:40:17,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:40:17,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011798761] [2022-11-03 03:40:17,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:40:17,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:40:17,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:40:18,514 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 03:40:18,514 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:40:18,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011798761] [2022-11-03 03:40:18,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011798761] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:40:18,514 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:40:18,514 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-03 03:40:18,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848529183] [2022-11-03 03:40:18,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:40:18,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-03 03:40:18,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:40:18,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-03 03:40:18,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2022-11-03 03:40:18,515 INFO L87 Difference]: Start difference. First operand 1830 states and 4072 transitions. Second operand has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 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 03:40:23,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:40:23,602 INFO L93 Difference]: Finished difference Result 3068 states and 6844 transitions. [2022-11-03 03:40:23,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-03 03:40:23,602 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 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 17 [2022-11-03 03:40:23,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:40:23,606 INFO L225 Difference]: With dead ends: 3068 [2022-11-03 03:40:23,606 INFO L226 Difference]: Without dead ends: 3068 [2022-11-03 03:40:23,607 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=376, Invalid=1030, Unknown=0, NotChecked=0, Total=1406 [2022-11-03 03:40:23,607 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 635 mSDsluCounter, 402 mSDsCounter, 0 mSdLazyCounter, 3318 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 635 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 3373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 3318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:40:23,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [635 Valid, 35 Invalid, 3373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 3318 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-11-03 03:40:23,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3068 states. [2022-11-03 03:40:23,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3068 to 1786. [2022-11-03 03:40:23,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1786 states, 1776 states have (on average 2.2359234234234235) internal successors, (3971), 1785 states have internal predecessors, (3971), 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 03:40:23,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1786 states to 1786 states and 3971 transitions. [2022-11-03 03:40:23,647 INFO L78 Accepts]: Start accepts. Automaton has 1786 states and 3971 transitions. Word has length 17 [2022-11-03 03:40:23,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:40:23,648 INFO L495 AbstractCegarLoop]: Abstraction has 1786 states and 3971 transitions. [2022-11-03 03:40:23,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 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 03:40:23,648 INFO L276 IsEmpty]: Start isEmpty. Operand 1786 states and 3971 transitions. [2022-11-03 03:40:23,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-03 03:40:23,648 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:40:23,649 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:40:23,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-11-03 03:40:23,649 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-11-03 03:40:23,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:40:23,649 INFO L85 PathProgramCache]: Analyzing trace with hash 529358718, now seen corresponding path program 1 times [2022-11-03 03:40:23,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:40:23,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758024391] [2022-11-03 03:40:23,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:40:23,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:40:23,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:40:25,060 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 03:40:25,061 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:40:25,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758024391] [2022-11-03 03:40:25,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758024391] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:40:25,061 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:40:25,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-03 03:40:25,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357817501] [2022-11-03 03:40:25,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:40:25,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-03 03:40:25,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:40:25,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-03 03:40:25,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2022-11-03 03:40:25,062 INFO L87 Difference]: Start difference. First operand 1786 states and 3971 transitions. Second operand has 16 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 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 03:40:29,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:40:29,079 INFO L93 Difference]: Finished difference Result 3134 states and 6866 transitions. [2022-11-03 03:40:29,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-03 03:40:29,079 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 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 18 [2022-11-03 03:40:29,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:40:29,083 INFO L225 Difference]: With dead ends: 3134 [2022-11-03 03:40:29,083 INFO L226 Difference]: Without dead ends: 3134 [2022-11-03 03:40:29,083 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=276, Invalid=716, Unknown=0, NotChecked=0, Total=992 [2022-11-03 03:40:29,084 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 393 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 2658 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 393 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 2730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 2658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-03 03:40:29,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [393 Valid, 13 Invalid, 2730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 2658 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-03 03:40:29,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3134 states. [2022-11-03 03:40:29,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3134 to 1890. [2022-11-03 03:40:29,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1890 states, 1880 states have (on average 2.2398936170212767) internal successors, (4211), 1889 states have internal predecessors, (4211), 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 03:40:29,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1890 states to 1890 states and 4211 transitions. [2022-11-03 03:40:29,119 INFO L78 Accepts]: Start accepts. Automaton has 1890 states and 4211 transitions. Word has length 18 [2022-11-03 03:40:29,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:40:29,119 INFO L495 AbstractCegarLoop]: Abstraction has 1890 states and 4211 transitions. [2022-11-03 03:40:29,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 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 03:40:29,120 INFO L276 IsEmpty]: Start isEmpty. Operand 1890 states and 4211 transitions. [2022-11-03 03:40:29,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-03 03:40:29,121 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:40:29,121 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:40:29,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-11-03 03:40:29,121 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-11-03 03:40:29,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:40:29,122 INFO L85 PathProgramCache]: Analyzing trace with hash 24238454, now seen corresponding path program 2 times [2022-11-03 03:40:29,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:40:29,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477503808] [2022-11-03 03:40:29,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:40:29,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:40:29,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:40:30,837 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 03:40:30,837 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:40:30,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477503808] [2022-11-03 03:40:30,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477503808] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:40:30,838 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:40:30,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-03 03:40:30,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671109490] [2022-11-03 03:40:30,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:40:30,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-03 03:40:30,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:40:30,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-03 03:40:30,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2022-11-03 03:40:30,839 INFO L87 Difference]: Start difference. First operand 1890 states and 4211 transitions. Second operand has 16 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 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 03:40:38,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:40:38,391 INFO L93 Difference]: Finished difference Result 3697 states and 8065 transitions. [2022-11-03 03:40:38,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-11-03 03:40:38,392 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 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 18 [2022-11-03 03:40:38,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:40:38,397 INFO L225 Difference]: With dead ends: 3697 [2022-11-03 03:40:38,397 INFO L226 Difference]: Without dead ends: 3697 [2022-11-03 03:40:38,398 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 630 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=742, Invalid=2120, Unknown=0, NotChecked=0, Total=2862 [2022-11-03 03:40:38,398 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 784 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 2839 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 784 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 3010 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 2839 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-11-03 03:40:38,399 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [784 Valid, 19 Invalid, 3010 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 2839 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-11-03 03:40:38,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3697 states. [2022-11-03 03:40:38,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3697 to 1857. [2022-11-03 03:40:38,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1857 states, 1847 states have (on average 2.232809962100704) internal successors, (4124), 1856 states have internal predecessors, (4124), 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 03:40:38,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1857 states to 1857 states and 4124 transitions. [2022-11-03 03:40:38,432 INFO L78 Accepts]: Start accepts. Automaton has 1857 states and 4124 transitions. Word has length 18 [2022-11-03 03:40:38,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:40:38,432 INFO L495 AbstractCegarLoop]: Abstraction has 1857 states and 4124 transitions. [2022-11-03 03:40:38,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 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 03:40:38,432 INFO L276 IsEmpty]: Start isEmpty. Operand 1857 states and 4124 transitions. [2022-11-03 03:40:38,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-03 03:40:38,433 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:40:38,433 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:40:38,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-11-03 03:40:38,434 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-11-03 03:40:38,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:40:38,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1823913830, now seen corresponding path program 3 times [2022-11-03 03:40:38,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:40:38,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634176844] [2022-11-03 03:40:38,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:40:38,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:40:38,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:40:39,778 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 03:40:39,779 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:40:39,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634176844] [2022-11-03 03:40:39,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634176844] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:40:39,779 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:40:39,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-03 03:40:39,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602874462] [2022-11-03 03:40:39,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:40:39,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-03 03:40:39,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:40:39,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-03 03:40:39,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2022-11-03 03:40:39,780 INFO L87 Difference]: Start difference. First operand 1857 states and 4124 transitions. Second operand has 16 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 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 03:40:47,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:40:47,962 INFO L93 Difference]: Finished difference Result 3485 states and 7631 transitions. [2022-11-03 03:40:47,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-11-03 03:40:47,963 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 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 18 [2022-11-03 03:40:47,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:40:47,968 INFO L225 Difference]: With dead ends: 3485 [2022-11-03 03:40:47,968 INFO L226 Difference]: Without dead ends: 3485 [2022-11-03 03:40:47,968 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1084 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=1036, Invalid=3254, Unknown=0, NotChecked=0, Total=4290 [2022-11-03 03:40:47,969 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 868 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 2803 mSolverCounterSat, 225 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 868 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 3028 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 225 IncrementalHoareTripleChecker+Valid, 2803 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:40:47,969 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [868 Valid, 19 Invalid, 3028 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [225 Valid, 2803 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-11-03 03:40:47,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3485 states. [2022-11-03 03:40:47,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3485 to 1845. [2022-11-03 03:40:47,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1845 states, 1835 states have (on average 2.23433242506812) internal successors, (4100), 1844 states have internal predecessors, (4100), 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 03:40:48,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1845 states to 1845 states and 4100 transitions. [2022-11-03 03:40:48,000 INFO L78 Accepts]: Start accepts. Automaton has 1845 states and 4100 transitions. Word has length 18 [2022-11-03 03:40:48,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:40:48,001 INFO L495 AbstractCegarLoop]: Abstraction has 1845 states and 4100 transitions. [2022-11-03 03:40:48,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 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 03:40:48,001 INFO L276 IsEmpty]: Start isEmpty. Operand 1845 states and 4100 transitions. [2022-11-03 03:40:48,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-03 03:40:48,002 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:40:48,002 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:40:48,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-11-03 03:40:48,003 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-11-03 03:40:48,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:40:48,003 INFO L85 PathProgramCache]: Analyzing trace with hash -1664813822, now seen corresponding path program 4 times [2022-11-03 03:40:48,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:40:48,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631802922] [2022-11-03 03:40:48,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:40:48,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:40:48,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:40:48,628 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 03:40:48,628 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:40:48,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631802922] [2022-11-03 03:40:48,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631802922] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:40:48,629 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:40:48,629 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-03 03:40:48,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271685350] [2022-11-03 03:40:48,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:40:48,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-03 03:40:48,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:40:48,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-03 03:40:48,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2022-11-03 03:40:48,630 INFO L87 Difference]: Start difference. First operand 1845 states and 4100 transitions. Second operand has 15 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 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 03:40:54,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:40:54,930 INFO L93 Difference]: Finished difference Result 3412 states and 7481 transitions. [2022-11-03 03:40:54,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-11-03 03:40:54,941 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 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 18 [2022-11-03 03:40:54,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:40:54,947 INFO L225 Difference]: With dead ends: 3412 [2022-11-03 03:40:54,947 INFO L226 Difference]: Without dead ends: 3412 [2022-11-03 03:40:54,948 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1545 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1445, Invalid=4255, Unknown=0, NotChecked=0, Total=5700 [2022-11-03 03:40:54,949 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 1198 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 3517 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1198 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 3674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 3517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-11-03 03:40:54,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1198 Valid, 34 Invalid, 3674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 3517 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-11-03 03:40:54,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3412 states. [2022-11-03 03:40:54,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3412 to 1843. [2022-11-03 03:40:54,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1843 states, 1833 states have (on average 2.2334969994544465) internal successors, (4094), 1842 states have internal predecessors, (4094), 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 03:40:54,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1843 states to 1843 states and 4094 transitions. [2022-11-03 03:40:54,984 INFO L78 Accepts]: Start accepts. Automaton has 1843 states and 4094 transitions. Word has length 18 [2022-11-03 03:40:54,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:40:54,984 INFO L495 AbstractCegarLoop]: Abstraction has 1843 states and 4094 transitions. [2022-11-03 03:40:54,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 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 03:40:54,984 INFO L276 IsEmpty]: Start isEmpty. Operand 1843 states and 4094 transitions. [2022-11-03 03:40:54,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-03 03:40:54,985 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:40:54,985 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:40:54,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-11-03 03:40:54,985 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-11-03 03:40:54,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:40:54,986 INFO L85 PathProgramCache]: Analyzing trace with hash -1172697858, now seen corresponding path program 5 times [2022-11-03 03:40:54,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:40:54,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358616856] [2022-11-03 03:40:54,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:40:54,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:40:55,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:40:55,785 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 03:40:55,786 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:40:55,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358616856] [2022-11-03 03:40:55,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358616856] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:40:55,786 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:40:55,786 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-03 03:40:55,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273313418] [2022-11-03 03:40:55,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:40:55,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-03 03:40:55,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:40:55,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-03 03:40:55,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2022-11-03 03:40:55,787 INFO L87 Difference]: Start difference. First operand 1843 states and 4094 transitions. Second operand has 13 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 12 states have internal predecessors, (18), 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 03:40:59,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:40:59,245 INFO L93 Difference]: Finished difference Result 2397 states and 5269 transitions. [2022-11-03 03:40:59,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-03 03:40:59,246 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 12 states have internal predecessors, (18), 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 18 [2022-11-03 03:40:59,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:40:59,249 INFO L225 Difference]: With dead ends: 2397 [2022-11-03 03:40:59,249 INFO L226 Difference]: Without dead ends: 2397 [2022-11-03 03:40:59,249 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=185, Invalid=571, Unknown=0, NotChecked=0, Total=756 [2022-11-03 03:40:59,250 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 323 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 2848 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 2875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 2848 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-03 03:40:59,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [323 Valid, 10 Invalid, 2875 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 2848 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-03 03:40:59,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2397 states. [2022-11-03 03:40:59,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2397 to 1857. [2022-11-03 03:40:59,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1857 states, 1847 states have (on average 2.231185706551164) internal successors, (4121), 1856 states have internal predecessors, (4121), 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 03:40:59,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1857 states to 1857 states and 4121 transitions. [2022-11-03 03:40:59,286 INFO L78 Accepts]: Start accepts. Automaton has 1857 states and 4121 transitions. Word has length 18 [2022-11-03 03:40:59,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:40:59,286 INFO L495 AbstractCegarLoop]: Abstraction has 1857 states and 4121 transitions. [2022-11-03 03:40:59,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 12 states have internal predecessors, (18), 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 03:40:59,286 INFO L276 IsEmpty]: Start isEmpty. Operand 1857 states and 4121 transitions. [2022-11-03 03:40:59,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-03 03:40:59,287 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:40:59,287 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:40:59,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-11-03 03:40:59,287 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-11-03 03:40:59,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:40:59,288 INFO L85 PathProgramCache]: Analyzing trace with hash 626977518, now seen corresponding path program 6 times [2022-11-03 03:40:59,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:40:59,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630273444] [2022-11-03 03:40:59,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:40:59,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:40:59,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:41:00,805 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 03:41:00,805 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:41:00,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630273444] [2022-11-03 03:41:00,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630273444] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:41:00,805 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:41:00,806 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-03 03:41:00,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991957208] [2022-11-03 03:41:00,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:41:00,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-03 03:41:00,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:41:00,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-03 03:41:00,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2022-11-03 03:41:00,806 INFO L87 Difference]: Start difference. First operand 1857 states and 4121 transitions. Second operand has 15 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 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 03:41:07,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:41:07,054 INFO L93 Difference]: Finished difference Result 2520 states and 5536 transitions. [2022-11-03 03:41:07,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-03 03:41:07,055 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 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 18 [2022-11-03 03:41:07,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:41:07,058 INFO L225 Difference]: With dead ends: 2520 [2022-11-03 03:41:07,058 INFO L226 Difference]: Without dead ends: 2520 [2022-11-03 03:41:07,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=390, Invalid=1170, Unknown=0, NotChecked=0, Total=1560 [2022-11-03 03:41:07,059 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 513 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 3453 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 513 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 3526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 3453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-11-03 03:41:07,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [513 Valid, 33 Invalid, 3526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 3453 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-11-03 03:41:07,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2520 states. [2022-11-03 03:41:07,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2520 to 1887. [2022-11-03 03:41:07,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1887 states, 1877 states have (on average 2.2306872669152904) internal successors, (4187), 1886 states have internal predecessors, (4187), 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 03:41:07,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1887 states to 1887 states and 4187 transitions. [2022-11-03 03:41:07,085 INFO L78 Accepts]: Start accepts. Automaton has 1887 states and 4187 transitions. Word has length 18 [2022-11-03 03:41:07,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:41:07,085 INFO L495 AbstractCegarLoop]: Abstraction has 1887 states and 4187 transitions. [2022-11-03 03:41:07,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 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 03:41:07,085 INFO L276 IsEmpty]: Start isEmpty. Operand 1887 states and 4187 transitions. [2022-11-03 03:41:07,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-03 03:41:07,086 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:41:07,086 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:41:07,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-11-03 03:41:07,087 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-11-03 03:41:07,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:41:07,087 INFO L85 PathProgramCache]: Analyzing trace with hash 1433217162, now seen corresponding path program 7 times [2022-11-03 03:41:07,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:41:07,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315554228] [2022-11-03 03:41:07,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:41:07,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:41:07,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:41:07,928 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 03:41:07,928 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:41:07,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315554228] [2022-11-03 03:41:07,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315554228] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:41:07,929 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:41:07,929 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 03:41:07,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915395443] [2022-11-03 03:41:07,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:41:07,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 03:41:07,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:41:07,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 03:41:07,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:41:07,930 INFO L87 Difference]: Start difference. First operand 1887 states and 4187 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 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 03:41:09,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:41:09,060 INFO L93 Difference]: Finished difference Result 1945 states and 4286 transitions. [2022-11-03 03:41:09,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 03:41:09,061 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 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 18 [2022-11-03 03:41:09,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:41:09,063 INFO L225 Difference]: With dead ends: 1945 [2022-11-03 03:41:09,063 INFO L226 Difference]: Without dead ends: 1945 [2022-11-03 03:41:09,063 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-03 03:41:09,064 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 203 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 1002 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 1005 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1002 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:41:09,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 17 Invalid, 1005 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1002 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-03 03:41:09,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1945 states. [2022-11-03 03:41:09,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1945 to 1841. [2022-11-03 03:41:09,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1841 states, 1831 states have (on average 2.237028945931185) internal successors, (4096), 1840 states have internal predecessors, (4096), 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 03:41:09,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1841 states to 1841 states and 4096 transitions. [2022-11-03 03:41:09,088 INFO L78 Accepts]: Start accepts. Automaton has 1841 states and 4096 transitions. Word has length 18 [2022-11-03 03:41:09,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:41:09,088 INFO L495 AbstractCegarLoop]: Abstraction has 1841 states and 4096 transitions. [2022-11-03 03:41:09,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 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 03:41:09,089 INFO L276 IsEmpty]: Start isEmpty. Operand 1841 states and 4096 transitions. [2022-11-03 03:41:09,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-03 03:41:09,089 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:41:09,089 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:41:09,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-11-03 03:41:09,090 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-11-03 03:41:09,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:41:09,090 INFO L85 PathProgramCache]: Analyzing trace with hash 1556407515, now seen corresponding path program 1 times [2022-11-03 03:41:09,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:41:09,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086648384] [2022-11-03 03:41:09,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:41:09,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:41:09,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:41:10,368 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 03:41:10,368 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:41:10,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086648384] [2022-11-03 03:41:10,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086648384] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:41:10,368 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:41:10,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-03 03:41:10,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028592230] [2022-11-03 03:41:10,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:41:10,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-03 03:41:10,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:41:10,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-03 03:41:10,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-03 03:41:10,370 INFO L87 Difference]: Start difference. First operand 1841 states and 4096 transitions. Second operand has 9 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 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 03:41:11,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:41:11,776 INFO L93 Difference]: Finished difference Result 1652 states and 3667 transitions. [2022-11-03 03:41:11,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 03:41:11,777 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 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 18 [2022-11-03 03:41:11,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:41:11,779 INFO L225 Difference]: With dead ends: 1652 [2022-11-03 03:41:11,779 INFO L226 Difference]: Without dead ends: 1642 [2022-11-03 03:41:11,780 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2022-11-03 03:41:11,780 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 72 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 918 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 918 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:41:11,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 19 Invalid, 923 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 918 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-03 03:41:11,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1642 states. [2022-11-03 03:41:11,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1642 to 1635. [2022-11-03 03:41:11,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1635 states, 1625 states have (on average 2.235692307692308) internal successors, (3633), 1634 states have internal predecessors, (3633), 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 03:41:11,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1635 states to 1635 states and 3633 transitions. [2022-11-03 03:41:11,800 INFO L78 Accepts]: Start accepts. Automaton has 1635 states and 3633 transitions. Word has length 18 [2022-11-03 03:41:11,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:41:11,800 INFO L495 AbstractCegarLoop]: Abstraction has 1635 states and 3633 transitions. [2022-11-03 03:41:11,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 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 03:41:11,800 INFO L276 IsEmpty]: Start isEmpty. Operand 1635 states and 3633 transitions. [2022-11-03 03:41:11,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-03 03:41:11,801 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:41:11,801 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] [2022-11-03 03:41:11,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-11-03 03:41:11,801 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-11-03 03:41:11,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:41:11,801 INFO L85 PathProgramCache]: Analyzing trace with hash 1690575137, now seen corresponding path program 1 times [2022-11-03 03:41:11,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:41:11,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035338900] [2022-11-03 03:41:11,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:41:11,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:41:11,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:41:16,436 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 03:41:16,437 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:41:16,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035338900] [2022-11-03 03:41:16,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035338900] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:41:16,437 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:41:16,437 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-03 03:41:16,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165410083] [2022-11-03 03:41:16,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:41:16,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-03 03:41:16,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:41:16,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-03 03:41:16,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2022-11-03 03:41:16,439 INFO L87 Difference]: Start difference. First operand 1635 states and 3633 transitions. Second operand has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 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 03:41:20,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:41:20,428 INFO L93 Difference]: Finished difference Result 1906 states and 4212 transitions. [2022-11-03 03:41:20,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-03 03:41:20,428 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 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 20 [2022-11-03 03:41:20,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:41:20,431 INFO L225 Difference]: With dead ends: 1906 [2022-11-03 03:41:20,431 INFO L226 Difference]: Without dead ends: 1906 [2022-11-03 03:41:20,431 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=207, Invalid=785, Unknown=0, NotChecked=0, Total=992 [2022-11-03 03:41:20,432 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 340 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 1932 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 1966 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1932 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-03 03:41:20,432 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [340 Valid, 41 Invalid, 1966 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1932 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-03 03:41:20,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1906 states. [2022-11-03 03:41:20,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1906 to 1720. [2022-11-03 03:41:20,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1720 states, 1710 states have (on average 2.2350877192982455) internal successors, (3822), 1719 states have internal predecessors, (3822), 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 03:41:20,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1720 states to 1720 states and 3822 transitions. [2022-11-03 03:41:20,457 INFO L78 Accepts]: Start accepts. Automaton has 1720 states and 3822 transitions. Word has length 20 [2022-11-03 03:41:20,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:41:20,458 INFO L495 AbstractCegarLoop]: Abstraction has 1720 states and 3822 transitions. [2022-11-03 03:41:20,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 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 03:41:20,458 INFO L276 IsEmpty]: Start isEmpty. Operand 1720 states and 3822 transitions. [2022-11-03 03:41:20,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-03 03:41:20,459 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:41:20,459 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] [2022-11-03 03:41:20,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-11-03 03:41:20,459 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-11-03 03:41:20,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:41:20,460 INFO L85 PathProgramCache]: Analyzing trace with hash -1387569905, now seen corresponding path program 2 times [2022-11-03 03:41:20,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:41:20,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916839708] [2022-11-03 03:41:20,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:41:20,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:41:20,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:41:24,503 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 03:41:24,503 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:41:24,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916839708] [2022-11-03 03:41:24,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916839708] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:41:24,503 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:41:24,503 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-03 03:41:24,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949532747] [2022-11-03 03:41:24,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:41:24,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-03 03:41:24,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:41:24,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-03 03:41:24,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2022-11-03 03:41:24,505 INFO L87 Difference]: Start difference. First operand 1720 states and 3822 transitions. Second operand has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 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 03:41:28,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:41:28,576 INFO L93 Difference]: Finished difference Result 2151 states and 4754 transitions. [2022-11-03 03:41:28,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-03 03:41:28,576 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 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 20 [2022-11-03 03:41:28,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:41:28,579 INFO L225 Difference]: With dead ends: 2151 [2022-11-03 03:41:28,579 INFO L226 Difference]: Without dead ends: 2151 [2022-11-03 03:41:28,579 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=240, Invalid=950, Unknown=0, NotChecked=0, Total=1190 [2022-11-03 03:41:28,580 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 385 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 2254 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 385 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 2295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 2254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-03 03:41:28,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [385 Valid, 41 Invalid, 2295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 2254 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-03 03:41:28,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2151 states. [2022-11-03 03:41:28,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2151 to 1722. [2022-11-03 03:41:28,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1722 states, 1712 states have (on average 2.2348130841121496) internal successors, (3826), 1721 states have internal predecessors, (3826), 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 03:41:28,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1722 states to 1722 states and 3826 transitions. [2022-11-03 03:41:28,612 INFO L78 Accepts]: Start accepts. Automaton has 1722 states and 3826 transitions. Word has length 20 [2022-11-03 03:41:28,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:41:28,612 INFO L495 AbstractCegarLoop]: Abstraction has 1722 states and 3826 transitions. [2022-11-03 03:41:28,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 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 03:41:28,613 INFO L276 IsEmpty]: Start isEmpty. Operand 1722 states and 3826 transitions. [2022-11-03 03:41:28,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-03 03:41:28,614 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:41:28,614 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] [2022-11-03 03:41:28,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-11-03 03:41:28,614 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-11-03 03:41:28,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:41:28,615 INFO L85 PathProgramCache]: Analyzing trace with hash -569689165, now seen corresponding path program 3 times [2022-11-03 03:41:28,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:41:28,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280951354] [2022-11-03 03:41:28,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:41:28,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:41:28,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:41:30,427 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 03:41:30,428 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:41:30,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280951354] [2022-11-03 03:41:30,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280951354] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:41:30,428 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:41:30,428 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-03 03:41:30,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885385751] [2022-11-03 03:41:30,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:41:30,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-03 03:41:30,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:41:30,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-03 03:41:30,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2022-11-03 03:41:30,430 INFO L87 Difference]: Start difference. First operand 1722 states and 3826 transitions. Second operand has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 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 03:41:35,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:41:35,006 INFO L93 Difference]: Finished difference Result 2186 states and 4842 transitions. [2022-11-03 03:41:35,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-03 03:41:35,006 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 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 20 [2022-11-03 03:41:35,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:41:35,009 INFO L225 Difference]: With dead ends: 2186 [2022-11-03 03:41:35,009 INFO L226 Difference]: Without dead ends: 2186 [2022-11-03 03:41:35,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=265, Invalid=925, Unknown=0, NotChecked=0, Total=1190 [2022-11-03 03:41:35,010 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 332 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 3027 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 3069 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 3027 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:41:35,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [332 Valid, 41 Invalid, 3069 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 3027 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-11-03 03:41:35,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2186 states. [2022-11-03 03:41:35,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2186 to 1779. [2022-11-03 03:41:35,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1779 states, 1769 states have (on average 2.2345958168456757) internal successors, (3953), 1778 states have internal predecessors, (3953), 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 03:41:35,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1779 states to 1779 states and 3953 transitions. [2022-11-03 03:41:35,032 INFO L78 Accepts]: Start accepts. Automaton has 1779 states and 3953 transitions. Word has length 20 [2022-11-03 03:41:35,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:41:35,032 INFO L495 AbstractCegarLoop]: Abstraction has 1779 states and 3953 transitions. [2022-11-03 03:41:35,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 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 03:41:35,033 INFO L276 IsEmpty]: Start isEmpty. Operand 1779 states and 3953 transitions. [2022-11-03 03:41:35,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-03 03:41:35,034 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:41:35,034 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] [2022-11-03 03:41:35,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-11-03 03:41:35,034 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-11-03 03:41:35,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:41:35,034 INFO L85 PathProgramCache]: Analyzing trace with hash 1769960845, now seen corresponding path program 4 times [2022-11-03 03:41:35,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:41:35,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489155438] [2022-11-03 03:41:35,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:41:35,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:41:35,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:41:36,663 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 03:41:36,663 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:41:36,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489155438] [2022-11-03 03:41:36,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489155438] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:41:36,663 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:41:36,663 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-03 03:41:36,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233791370] [2022-11-03 03:41:36,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:41:36,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-03 03:41:36,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:41:36,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-03 03:41:36,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2022-11-03 03:41:36,664 INFO L87 Difference]: Start difference. First operand 1779 states and 3953 transitions. Second operand has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 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 03:41:39,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:41:39,826 INFO L93 Difference]: Finished difference Result 2254 states and 5020 transitions. [2022-11-03 03:41:39,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-03 03:41:39,827 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 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 20 [2022-11-03 03:41:39,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:41:39,829 INFO L225 Difference]: With dead ends: 2254 [2022-11-03 03:41:39,829 INFO L226 Difference]: Without dead ends: 2254 [2022-11-03 03:41:39,830 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=204, Invalid=788, Unknown=0, NotChecked=0, Total=992 [2022-11-03 03:41:39,830 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 337 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 2073 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 2110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 2073 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:41:39,830 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [337 Valid, 41 Invalid, 2110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 2073 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-03 03:41:39,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2254 states. [2022-11-03 03:41:39,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2254 to 1781. [2022-11-03 03:41:39,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1781 states, 1771 states have (on average 2.2343308865047997) internal successors, (3957), 1780 states have internal predecessors, (3957), 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 03:41:39,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1781 states to 1781 states and 3957 transitions. [2022-11-03 03:41:39,862 INFO L78 Accepts]: Start accepts. Automaton has 1781 states and 3957 transitions. Word has length 20 [2022-11-03 03:41:39,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:41:39,862 INFO L495 AbstractCegarLoop]: Abstraction has 1781 states and 3957 transitions. [2022-11-03 03:41:39,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 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 03:41:39,862 INFO L276 IsEmpty]: Start isEmpty. Operand 1781 states and 3957 transitions. [2022-11-03 03:41:39,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-03 03:41:39,864 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:41:39,864 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] [2022-11-03 03:41:39,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-11-03 03:41:39,864 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-11-03 03:41:39,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:41:39,865 INFO L85 PathProgramCache]: Analyzing trace with hash -397161359, now seen corresponding path program 5 times [2022-11-03 03:41:39,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:41:39,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402446603] [2022-11-03 03:41:39,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:41:39,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:41:39,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:41:41,918 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 03:41:41,919 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:41:41,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402446603] [2022-11-03 03:41:41,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402446603] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:41:41,919 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:41:41,919 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-03 03:41:41,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623754688] [2022-11-03 03:41:41,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:41:41,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-03 03:41:41,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:41:41,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-03 03:41:41,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2022-11-03 03:41:41,920 INFO L87 Difference]: Start difference. First operand 1781 states and 3957 transitions. Second operand has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 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 03:41:46,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:41:46,842 INFO L93 Difference]: Finished difference Result 2705 states and 6046 transitions. [2022-11-03 03:41:46,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-03 03:41:46,842 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 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 20 [2022-11-03 03:41:46,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:41:46,846 INFO L225 Difference]: With dead ends: 2705 [2022-11-03 03:41:46,847 INFO L226 Difference]: Without dead ends: 2705 [2022-11-03 03:41:46,847 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=252, Invalid=1008, Unknown=0, NotChecked=0, Total=1260 [2022-11-03 03:41:46,848 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 611 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 2591 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 611 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 2646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 2591 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:41:46,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [611 Valid, 19 Invalid, 2646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 2591 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-11-03 03:41:46,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2705 states. [2022-11-03 03:41:46,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2705 to 1866. [2022-11-03 03:41:46,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1866 states, 1856 states have (on average 2.2359913793103448) internal successors, (4150), 1865 states have internal predecessors, (4150), 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 03:41:46,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1866 states to 1866 states and 4150 transitions. [2022-11-03 03:41:46,878 INFO L78 Accepts]: Start accepts. Automaton has 1866 states and 4150 transitions. Word has length 20 [2022-11-03 03:41:46,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:41:46,878 INFO L495 AbstractCegarLoop]: Abstraction has 1866 states and 4150 transitions. [2022-11-03 03:41:46,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 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 03:41:46,878 INFO L276 IsEmpty]: Start isEmpty. Operand 1866 states and 4150 transitions. [2022-11-03 03:41:46,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-03 03:41:46,879 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:41:46,879 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] [2022-11-03 03:41:46,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-11-03 03:41:46,879 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-11-03 03:41:46,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:41:46,880 INFO L85 PathProgramCache]: Analyzing trace with hash 2144590739, now seen corresponding path program 6 times [2022-11-03 03:41:46,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:41:46,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753268828] [2022-11-03 03:41:46,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:41:46,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:41:46,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:41:51,744 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 03:41:51,744 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:41:51,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753268828] [2022-11-03 03:41:51,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753268828] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:41:51,744 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:41:51,744 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-11-03 03:41:51,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484376728] [2022-11-03 03:41:51,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:41:51,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-03 03:41:51,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:41:51,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-03 03:41:51,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2022-11-03 03:41:51,745 INFO L87 Difference]: Start difference. First operand 1866 states and 4150 transitions. Second operand has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 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 03:42:04,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:42:04,984 INFO L93 Difference]: Finished difference Result 3211 states and 7210 transitions. [2022-11-03 03:42:04,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-03 03:42:04,984 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 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 20 [2022-11-03 03:42:04,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:42:04,988 INFO L225 Difference]: With dead ends: 3211 [2022-11-03 03:42:04,988 INFO L226 Difference]: Without dead ends: 3211 [2022-11-03 03:42:04,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 395 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=396, Invalid=1766, Unknown=0, NotChecked=0, Total=2162 [2022-11-03 03:42:04,989 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 640 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 4223 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 640 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 4269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 4223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:42:04,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [640 Valid, 21 Invalid, 4269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 4223 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2022-11-03 03:42:04,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3211 states. [2022-11-03 03:42:05,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3211 to 1930. [2022-11-03 03:42:05,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1930 states, 1920 states have (on average 2.2447916666666665) internal successors, (4310), 1929 states have internal predecessors, (4310), 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 03:42:05,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1930 states to 1930 states and 4310 transitions. [2022-11-03 03:42:05,027 INFO L78 Accepts]: Start accepts. Automaton has 1930 states and 4310 transitions. Word has length 20 [2022-11-03 03:42:05,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:42:05,027 INFO L495 AbstractCegarLoop]: Abstraction has 1930 states and 4310 transitions. [2022-11-03 03:42:05,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 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 03:42:05,027 INFO L276 IsEmpty]: Start isEmpty. Operand 1930 states and 4310 transitions. [2022-11-03 03:42:05,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-03 03:42:05,028 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:42:05,029 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] [2022-11-03 03:42:05,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-11-03 03:42:05,029 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-11-03 03:42:05,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:42:05,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1503150939, now seen corresponding path program 7 times [2022-11-03 03:42:05,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:42:05,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391745604] [2022-11-03 03:42:05,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:42:05,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:42:05,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:42:09,722 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 03:42:09,722 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:42:09,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391745604] [2022-11-03 03:42:09,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391745604] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:42:09,722 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:42:09,722 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-03 03:42:09,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662621378] [2022-11-03 03:42:09,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:42:09,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-03 03:42:09,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:42:09,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-03 03:42:09,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2022-11-03 03:42:09,724 INFO L87 Difference]: Start difference. First operand 1930 states and 4310 transitions. Second operand has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 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 03:42:18,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:42:18,878 INFO L93 Difference]: Finished difference Result 2495 states and 5578 transitions. [2022-11-03 03:42:18,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-03 03:42:18,879 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 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 20 [2022-11-03 03:42:18,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:42:18,882 INFO L225 Difference]: With dead ends: 2495 [2022-11-03 03:42:18,882 INFO L226 Difference]: Without dead ends: 2495 [2022-11-03 03:42:18,882 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 408 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=425, Invalid=1555, Unknown=0, NotChecked=0, Total=1980 [2022-11-03 03:42:18,882 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 559 mSDsluCounter, 512 mSDsCounter, 0 mSdLazyCounter, 4417 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 559 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 4464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 4417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:42:18,882 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [559 Valid, 21 Invalid, 4464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 4417 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2022-11-03 03:42:18,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2495 states. [2022-11-03 03:42:18,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2495 to 1819. [2022-11-03 03:42:18,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1819 states, 1809 states have (on average 2.242675511332228) internal successors, (4057), 1818 states have internal predecessors, (4057), 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 03:42:18,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1819 states to 1819 states and 4057 transitions. [2022-11-03 03:42:18,920 INFO L78 Accepts]: Start accepts. Automaton has 1819 states and 4057 transitions. Word has length 20 [2022-11-03 03:42:18,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:42:18,920 INFO L495 AbstractCegarLoop]: Abstraction has 1819 states and 4057 transitions. [2022-11-03 03:42:18,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 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 03:42:18,920 INFO L276 IsEmpty]: Start isEmpty. Operand 1819 states and 4057 transitions. [2022-11-03 03:42:18,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-03 03:42:18,921 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:42:18,922 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] [2022-11-03 03:42:18,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-11-03 03:42:18,922 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-11-03 03:42:18,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:42:18,923 INFO L85 PathProgramCache]: Analyzing trace with hash 662115789, now seen corresponding path program 8 times [2022-11-03 03:42:18,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:42:18,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769006017] [2022-11-03 03:42:18,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:42:18,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:42:18,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:42:21,878 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 03:42:21,878 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:42:21,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769006017] [2022-11-03 03:42:21,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769006017] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:42:21,879 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:42:21,879 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-03 03:42:21,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081022274] [2022-11-03 03:42:21,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:42:21,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-03 03:42:21,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:42:21,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-03 03:42:21,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2022-11-03 03:42:21,880 INFO L87 Difference]: Start difference. First operand 1819 states and 4057 transitions. Second operand has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 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 03:42:27,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:42:27,499 INFO L93 Difference]: Finished difference Result 2606 states and 5814 transitions. [2022-11-03 03:42:27,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-03 03:42:27,499 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 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 20 [2022-11-03 03:42:27,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:42:27,502 INFO L225 Difference]: With dead ends: 2606 [2022-11-03 03:42:27,502 INFO L226 Difference]: Without dead ends: 2606 [2022-11-03 03:42:27,503 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=230, Invalid=892, Unknown=0, NotChecked=0, Total=1122 [2022-11-03 03:42:27,503 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 575 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 3030 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 575 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 3069 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 3030 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-11-03 03:42:27,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [575 Valid, 19 Invalid, 3069 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 3030 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-11-03 03:42:27,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2606 states. [2022-11-03 03:42:27,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2606 to 1719. [2022-11-03 03:42:27,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1719 states, 1709 states have (on average 2.235225277940316) internal successors, (3820), 1718 states have internal predecessors, (3820), 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 03:42:27,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1719 states to 1719 states and 3820 transitions. [2022-11-03 03:42:27,528 INFO L78 Accepts]: Start accepts. Automaton has 1719 states and 3820 transitions. Word has length 20 [2022-11-03 03:42:27,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:42:27,529 INFO L495 AbstractCegarLoop]: Abstraction has 1719 states and 3820 transitions. [2022-11-03 03:42:27,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 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 03:42:27,529 INFO L276 IsEmpty]: Start isEmpty. Operand 1719 states and 3820 transitions. [2022-11-03 03:42:27,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-03 03:42:27,530 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:42:27,530 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] [2022-11-03 03:42:27,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-11-03 03:42:27,530 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-11-03 03:42:27,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:42:27,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1663109671, now seen corresponding path program 9 times [2022-11-03 03:42:27,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:42:27,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824767416] [2022-11-03 03:42:27,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:42:27,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:42:27,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:42:29,390 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 03:42:29,390 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:42:29,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824767416] [2022-11-03 03:42:29,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824767416] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:42:29,390 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:42:29,390 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-03 03:42:29,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302262615] [2022-11-03 03:42:29,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:42:29,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-03 03:42:29,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:42:29,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-03 03:42:29,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2022-11-03 03:42:29,391 INFO L87 Difference]: Start difference. First operand 1719 states and 3820 transitions. Second operand has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 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 03:42:34,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:42:34,418 INFO L93 Difference]: Finished difference Result 2002 states and 4431 transitions. [2022-11-03 03:42:34,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-03 03:42:34,419 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 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 20 [2022-11-03 03:42:34,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:42:34,421 INFO L225 Difference]: With dead ends: 2002 [2022-11-03 03:42:34,421 INFO L226 Difference]: Without dead ends: 2002 [2022-11-03 03:42:34,421 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=203, Invalid=853, Unknown=0, NotChecked=0, Total=1056 [2022-11-03 03:42:34,422 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 219 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 3795 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 3826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 3795 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-03 03:42:34,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 41 Invalid, 3826 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 3795 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-11-03 03:42:34,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2002 states. [2022-11-03 03:42:34,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2002 to 1798. [2022-11-03 03:42:34,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1798 states, 1788 states have (on average 2.2354586129753913) internal successors, (3997), 1797 states have internal predecessors, (3997), 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 03:42:34,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1798 states to 1798 states and 3997 transitions. [2022-11-03 03:42:34,450 INFO L78 Accepts]: Start accepts. Automaton has 1798 states and 3997 transitions. Word has length 20 [2022-11-03 03:42:34,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:42:34,451 INFO L495 AbstractCegarLoop]: Abstraction has 1798 states and 3997 transitions. [2022-11-03 03:42:34,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 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 03:42:34,451 INFO L276 IsEmpty]: Start isEmpty. Operand 1798 states and 3997 transitions. [2022-11-03 03:42:34,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-03 03:42:34,452 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:42:34,452 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] [2022-11-03 03:42:34,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2022-11-03 03:42:34,453 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-11-03 03:42:34,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:42:34,453 INFO L85 PathProgramCache]: Analyzing trace with hash -1813976885, now seen corresponding path program 10 times [2022-11-03 03:42:34,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:42:34,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140028580] [2022-11-03 03:42:34,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:42:34,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:42:34,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:42:37,359 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 03:42:37,359 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:42:37,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140028580] [2022-11-03 03:42:37,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140028580] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:42:37,360 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:42:37,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-03 03:42:37,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861037925] [2022-11-03 03:42:37,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:42:37,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-03 03:42:37,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:42:37,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-03 03:42:37,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2022-11-03 03:42:37,361 INFO L87 Difference]: Start difference. First operand 1798 states and 3997 transitions. Second operand has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 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 03:42:41,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:42:41,869 INFO L93 Difference]: Finished difference Result 2116 states and 4684 transitions. [2022-11-03 03:42:41,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-03 03:42:41,870 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 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 20 [2022-11-03 03:42:41,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:42:41,872 INFO L225 Difference]: With dead ends: 2116 [2022-11-03 03:42:41,873 INFO L226 Difference]: Without dead ends: 2116 [2022-11-03 03:42:41,873 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=254, Invalid=1078, Unknown=0, NotChecked=0, Total=1332 [2022-11-03 03:42:41,873 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 357 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 2677 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 2720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 2677 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-03 03:42:41,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [357 Valid, 41 Invalid, 2720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 2677 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-03 03:42:41,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2116 states. [2022-11-03 03:42:41,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2116 to 1799. [2022-11-03 03:42:41,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1799 states, 1789 states have (on average 2.2353269983230857) internal successors, (3999), 1798 states have internal predecessors, (3999), 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 03:42:41,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1799 states to 1799 states and 3999 transitions. [2022-11-03 03:42:41,898 INFO L78 Accepts]: Start accepts. Automaton has 1799 states and 3999 transitions. Word has length 20 [2022-11-03 03:42:41,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:42:41,898 INFO L495 AbstractCegarLoop]: Abstraction has 1799 states and 3999 transitions. [2022-11-03 03:42:41,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 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 03:42:41,898 INFO L276 IsEmpty]: Start isEmpty. Operand 1799 states and 3999 transitions. [2022-11-03 03:42:41,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-03 03:42:41,899 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:42:41,899 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] [2022-11-03 03:42:41,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2022-11-03 03:42:41,900 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-11-03 03:42:41,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:42:41,900 INFO L85 PathProgramCache]: Analyzing trace with hash 525673125, now seen corresponding path program 11 times [2022-11-03 03:42:41,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:42:41,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712467820] [2022-11-03 03:42:41,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:42:41,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:42:41,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:42:43,382 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 03:42:43,382 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:42:43,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712467820] [2022-11-03 03:42:43,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712467820] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:42:43,383 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:42:43,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-03 03:42:43,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596013800] [2022-11-03 03:42:43,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:42:43,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-03 03:42:43,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:42:43,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-03 03:42:43,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2022-11-03 03:42:43,384 INFO L87 Difference]: Start difference. First operand 1799 states and 3999 transitions. Second operand has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 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 03:42:47,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:42:47,394 INFO L93 Difference]: Finished difference Result 2171 states and 4831 transitions. [2022-11-03 03:42:47,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-03 03:42:47,395 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 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 20 [2022-11-03 03:42:47,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:42:47,398 INFO L225 Difference]: With dead ends: 2171 [2022-11-03 03:42:47,398 INFO L226 Difference]: Without dead ends: 2171 [2022-11-03 03:42:47,398 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=175, Invalid=695, Unknown=0, NotChecked=0, Total=870 [2022-11-03 03:42:47,399 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 252 mSDsluCounter, 415 mSDsCounter, 0 mSdLazyCounter, 3179 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 3208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 3179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:42:47,399 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [252 Valid, 41 Invalid, 3208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 3179 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-11-03 03:42:47,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2171 states. [2022-11-03 03:42:47,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2171 to 1836. [2022-11-03 03:42:47,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1836 states, 1826 states have (on average 2.2376779846659365) internal successors, (4086), 1835 states have internal predecessors, (4086), 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 03:42:47,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1836 states to 1836 states and 4086 transitions. [2022-11-03 03:42:47,427 INFO L78 Accepts]: Start accepts. Automaton has 1836 states and 4086 transitions. Word has length 20 [2022-11-03 03:42:47,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:42:47,428 INFO L495 AbstractCegarLoop]: Abstraction has 1836 states and 4086 transitions. [2022-11-03 03:42:47,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 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 03:42:47,428 INFO L276 IsEmpty]: Start isEmpty. Operand 1836 states and 4086 transitions. [2022-11-03 03:42:47,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-03 03:42:47,429 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:42:47,429 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] [2022-11-03 03:42:47,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2022-11-03 03:42:47,429 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-11-03 03:42:47,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:42:47,430 INFO L85 PathProgramCache]: Analyzing trace with hash -1641449079, now seen corresponding path program 12 times [2022-11-03 03:42:47,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:42:47,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056231281] [2022-11-03 03:42:47,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:42:47,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:42:47,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:42:51,173 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 03:42:51,173 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:42:51,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056231281] [2022-11-03 03:42:51,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056231281] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:42:51,173 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:42:51,174 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-03 03:42:51,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730266358] [2022-11-03 03:42:51,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:42:51,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-03 03:42:51,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:42:51,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-03 03:42:51,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2022-11-03 03:42:51,175 INFO L87 Difference]: Start difference. First operand 1836 states and 4086 transitions. Second operand has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 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 03:42:57,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:42:57,057 INFO L93 Difference]: Finished difference Result 2567 states and 5722 transitions. [2022-11-03 03:42:57,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-03 03:42:57,057 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 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 20 [2022-11-03 03:42:57,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:42:57,061 INFO L225 Difference]: With dead ends: 2567 [2022-11-03 03:42:57,061 INFO L226 Difference]: Without dead ends: 2567 [2022-11-03 03:42:57,062 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=223, Invalid=899, Unknown=0, NotChecked=0, Total=1122 [2022-11-03 03:42:57,062 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 371 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 3656 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 3713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 3656 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:42:57,062 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [371 Valid, 39 Invalid, 3713 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 3656 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-11-03 03:42:57,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2567 states. [2022-11-03 03:42:57,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2567 to 1802. [2022-11-03 03:42:57,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1802 states, 1792 states have (on average 2.2349330357142856) internal successors, (4005), 1801 states have internal predecessors, (4005), 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 03:42:57,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1802 states to 1802 states and 4005 transitions. [2022-11-03 03:42:57,085 INFO L78 Accepts]: Start accepts. Automaton has 1802 states and 4005 transitions. Word has length 20 [2022-11-03 03:42:57,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:42:57,086 INFO L495 AbstractCegarLoop]: Abstraction has 1802 states and 4005 transitions. [2022-11-03 03:42:57,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 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 03:42:57,086 INFO L276 IsEmpty]: Start isEmpty. Operand 1802 states and 4005 transitions. [2022-11-03 03:42:57,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-03 03:42:57,087 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:42:57,087 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] [2022-11-03 03:42:57,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2022-11-03 03:42:57,087 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-11-03 03:42:57,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:42:57,087 INFO L85 PathProgramCache]: Analyzing trace with hash 900303019, now seen corresponding path program 13 times [2022-11-03 03:42:57,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:42:57,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536780996] [2022-11-03 03:42:57,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:42:57,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:42:57,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:42:58,369 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 03:42:58,369 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:42:58,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536780996] [2022-11-03 03:42:58,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536780996] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:42:58,370 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:42:58,373 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-03 03:42:58,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897458381] [2022-11-03 03:42:58,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:42:58,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-03 03:42:58,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:42:58,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-03 03:42:58,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2022-11-03 03:42:58,374 INFO L87 Difference]: Start difference. First operand 1802 states and 4005 transitions. Second operand has 16 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 states have internal predecessors, (20), 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 03:43:02,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:43:02,704 INFO L93 Difference]: Finished difference Result 2861 states and 6381 transitions. [2022-11-03 03:43:02,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-03 03:43:02,704 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 states have internal predecessors, (20), 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 20 [2022-11-03 03:43:02,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:43:02,708 INFO L225 Difference]: With dead ends: 2861 [2022-11-03 03:43:02,708 INFO L226 Difference]: Without dead ends: 2861 [2022-11-03 03:43:02,708 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=220, Invalid=902, Unknown=0, NotChecked=0, Total=1122 [2022-11-03 03:43:02,709 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 481 mSDsluCounter, 414 mSDsCounter, 0 mSdLazyCounter, 3154 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 481 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 3206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 3154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:43:02,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [481 Valid, 41 Invalid, 3206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 3154 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-11-03 03:43:02,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2861 states. [2022-11-03 03:43:02,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2861 to 1841. [2022-11-03 03:43:02,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1841 states, 1831 states have (on average 2.237028945931185) internal successors, (4096), 1840 states have internal predecessors, (4096), 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 03:43:02,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1841 states to 1841 states and 4096 transitions. [2022-11-03 03:43:02,742 INFO L78 Accepts]: Start accepts. Automaton has 1841 states and 4096 transitions. Word has length 20 [2022-11-03 03:43:02,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:43:02,742 INFO L495 AbstractCegarLoop]: Abstraction has 1841 states and 4096 transitions. [2022-11-03 03:43:02,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 states have internal predecessors, (20), 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 03:43:02,743 INFO L276 IsEmpty]: Start isEmpty. Operand 1841 states and 4096 transitions. [2022-11-03 03:43:02,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-03 03:43:02,744 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:43:02,744 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] [2022-11-03 03:43:02,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2022-11-03 03:43:02,744 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-11-03 03:43:02,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:43:02,745 INFO L85 PathProgramCache]: Analyzing trace with hash -582171931, now seen corresponding path program 14 times [2022-11-03 03:43:02,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:43:02,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948947499] [2022-11-03 03:43:02,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:43:02,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:43:02,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:43:06,194 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 03:43:06,194 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:43:06,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948947499] [2022-11-03 03:43:06,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948947499] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:43:06,194 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:43:06,195 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-03 03:43:06,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668368672] [2022-11-03 03:43:06,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:43:06,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-03 03:43:06,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:43:06,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-03 03:43:06,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2022-11-03 03:43:06,196 INFO L87 Difference]: Start difference. First operand 1841 states and 4096 transitions. Second operand has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 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 03:43:15,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:43:15,296 INFO L93 Difference]: Finished difference Result 2271 states and 5055 transitions. [2022-11-03 03:43:15,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-03 03:43:15,297 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 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 20 [2022-11-03 03:43:15,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:43:15,300 INFO L225 Difference]: With dead ends: 2271 [2022-11-03 03:43:15,300 INFO L226 Difference]: Without dead ends: 2271 [2022-11-03 03:43:15,300 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=284, Invalid=1276, Unknown=0, NotChecked=0, Total=1560 [2022-11-03 03:43:15,300 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 593 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 3303 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 593 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 3332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 3303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-11-03 03:43:15,301 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [593 Valid, 41 Invalid, 3332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 3303 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-11-03 03:43:15,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2271 states. [2022-11-03 03:43:15,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2271 to 1838. [2022-11-03 03:43:15,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1838 states, 1828 states have (on average 2.237417943107221) internal successors, (4090), 1837 states have internal predecessors, (4090), 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 03:43:15,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1838 states to 1838 states and 4090 transitions. [2022-11-03 03:43:15,323 INFO L78 Accepts]: Start accepts. Automaton has 1838 states and 4090 transitions. Word has length 20 [2022-11-03 03:43:15,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:43:15,324 INFO L495 AbstractCegarLoop]: Abstraction has 1838 states and 4090 transitions. [2022-11-03 03:43:15,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 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 03:43:15,324 INFO L276 IsEmpty]: Start isEmpty. Operand 1838 states and 4090 transitions. [2022-11-03 03:43:15,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-03 03:43:15,325 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:43:15,325 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] [2022-11-03 03:43:15,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2022-11-03 03:43:15,325 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-11-03 03:43:15,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:43:15,326 INFO L85 PathProgramCache]: Analyzing trace with hash 167523559, now seen corresponding path program 15 times [2022-11-03 03:43:15,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:43:15,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881189367] [2022-11-03 03:43:15,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:43:15,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:43:15,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:43:18,100 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 03:43:18,100 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:43:18,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881189367] [2022-11-03 03:43:18,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881189367] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:43:18,101 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:43:18,101 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-03 03:43:18,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069914258] [2022-11-03 03:43:18,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:43:18,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-03 03:43:18,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:43:18,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-03 03:43:18,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2022-11-03 03:43:18,102 INFO L87 Difference]: Start difference. First operand 1838 states and 4090 transitions. Second operand has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 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 03:43:27,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:43:27,100 INFO L93 Difference]: Finished difference Result 3048 states and 6766 transitions. [2022-11-03 03:43:27,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-03 03:43:27,101 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 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 20 [2022-11-03 03:43:27,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:43:27,104 INFO L225 Difference]: With dead ends: 3048 [2022-11-03 03:43:27,104 INFO L226 Difference]: Without dead ends: 3048 [2022-11-03 03:43:27,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 499 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=420, Invalid=1742, Unknown=0, NotChecked=0, Total=2162 [2022-11-03 03:43:27,105 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 516 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 3630 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 516 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 3703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 3630 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-11-03 03:43:27,105 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [516 Valid, 19 Invalid, 3703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 3630 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-11-03 03:43:27,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3048 states. [2022-11-03 03:43:27,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3048 to 1838. [2022-11-03 03:43:27,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1838 states, 1828 states have (on average 2.237417943107221) internal successors, (4090), 1837 states have internal predecessors, (4090), 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 03:43:27,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1838 states to 1838 states and 4090 transitions. [2022-11-03 03:43:27,134 INFO L78 Accepts]: Start accepts. Automaton has 1838 states and 4090 transitions. Word has length 20 [2022-11-03 03:43:27,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:43:27,134 INFO L495 AbstractCegarLoop]: Abstraction has 1838 states and 4090 transitions. [2022-11-03 03:43:27,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 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 03:43:27,135 INFO L276 IsEmpty]: Start isEmpty. Operand 1838 states and 4090 transitions. [2022-11-03 03:43:27,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-03 03:43:27,136 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:43:27,136 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] [2022-11-03 03:43:27,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2022-11-03 03:43:27,136 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-11-03 03:43:27,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:43:27,137 INFO L85 PathProgramCache]: Analyzing trace with hash -1314951391, now seen corresponding path program 16 times [2022-11-03 03:43:27,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:43:27,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197372220] [2022-11-03 03:43:27,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:43:27,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:43:27,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:43:30,496 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 03:43:30,497 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:43:30,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197372220] [2022-11-03 03:43:30,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197372220] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:43:30,497 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:43:30,497 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-03 03:43:30,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216794313] [2022-11-03 03:43:30,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:43:30,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-03 03:43:30,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:43:30,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-03 03:43:30,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2022-11-03 03:43:30,498 INFO L87 Difference]: Start difference. First operand 1838 states and 4090 transitions. Second operand has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 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 03:43:38,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:43:38,420 INFO L93 Difference]: Finished difference Result 3194 states and 7103 transitions. [2022-11-03 03:43:38,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-03 03:43:38,421 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 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 20 [2022-11-03 03:43:38,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:43:38,425 INFO L225 Difference]: With dead ends: 3194 [2022-11-03 03:43:38,425 INFO L226 Difference]: Without dead ends: 3194 [2022-11-03 03:43:38,426 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=368, Invalid=1192, Unknown=0, NotChecked=0, Total=1560 [2022-11-03 03:43:38,426 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 597 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 3140 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 597 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 3187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 3140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:43:38,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [597 Valid, 19 Invalid, 3187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 3140 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-11-03 03:43:38,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3194 states. [2022-11-03 03:43:38,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3194 to 1838. [2022-11-03 03:43:38,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1838 states, 1828 states have (on average 2.237417943107221) internal successors, (4090), 1837 states have internal predecessors, (4090), 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 03:43:38,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1838 states to 1838 states and 4090 transitions. [2022-11-03 03:43:38,467 INFO L78 Accepts]: Start accepts. Automaton has 1838 states and 4090 transitions. Word has length 20 [2022-11-03 03:43:38,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:43:38,467 INFO L495 AbstractCegarLoop]: Abstraction has 1838 states and 4090 transitions. [2022-11-03 03:43:38,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 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 03:43:38,468 INFO L276 IsEmpty]: Start isEmpty. Operand 1838 states and 4090 transitions. [2022-11-03 03:43:38,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-03 03:43:38,469 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:43:38,469 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] [2022-11-03 03:43:38,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2022-11-03 03:43:38,470 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-11-03 03:43:38,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:43:38,470 INFO L85 PathProgramCache]: Analyzing trace with hash 498815713, now seen corresponding path program 17 times [2022-11-03 03:43:38,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:43:38,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273471623] [2022-11-03 03:43:38,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:43:38,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:43:38,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:43:41,131 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 03:43:41,132 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:43:41,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273471623] [2022-11-03 03:43:41,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273471623] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:43:41,132 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:43:41,132 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-03 03:43:41,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485474748] [2022-11-03 03:43:41,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:43:41,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-03 03:43:41,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:43:41,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-03 03:43:41,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2022-11-03 03:43:41,133 INFO L87 Difference]: Start difference. First operand 1838 states and 4090 transitions. Second operand has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 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 03:43:46,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:43:46,354 INFO L93 Difference]: Finished difference Result 2786 states and 6172 transitions. [2022-11-03 03:43:46,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-03 03:43:46,354 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 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 20 [2022-11-03 03:43:46,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:43:46,358 INFO L225 Difference]: With dead ends: 2786 [2022-11-03 03:43:46,358 INFO L226 Difference]: Without dead ends: 2786 [2022-11-03 03:43:46,358 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=285, Invalid=905, Unknown=0, NotChecked=0, Total=1190 [2022-11-03 03:43:46,358 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 535 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 2838 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 535 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 2876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 2838 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:43:46,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [535 Valid, 19 Invalid, 2876 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 2838 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-11-03 03:43:46,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2786 states. [2022-11-03 03:43:46,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2786 to 1842. [2022-11-03 03:43:46,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1842 states, 1832 states have (on average 2.2379912663755457) internal successors, (4100), 1841 states have internal predecessors, (4100), 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 03:43:46,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1842 states to 1842 states and 4100 transitions. [2022-11-03 03:43:46,383 INFO L78 Accepts]: Start accepts. Automaton has 1842 states and 4100 transitions. Word has length 20 [2022-11-03 03:43:46,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:43:46,384 INFO L495 AbstractCegarLoop]: Abstraction has 1842 states and 4100 transitions. [2022-11-03 03:43:46,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 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 03:43:46,384 INFO L276 IsEmpty]: Start isEmpty. Operand 1842 states and 4100 transitions. [2022-11-03 03:43:46,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-03 03:43:46,385 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:43:46,385 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] [2022-11-03 03:43:46,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2022-11-03 03:43:46,385 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-11-03 03:43:46,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:43:46,386 INFO L85 PathProgramCache]: Analyzing trace with hash -376067767, now seen corresponding path program 18 times [2022-11-03 03:43:46,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:43:46,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707114875] [2022-11-03 03:43:46,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:43:46,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:43:46,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:43:48,201 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 03:43:48,201 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:43:48,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707114875] [2022-11-03 03:43:48,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707114875] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:43:48,202 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:43:48,202 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-03 03:43:48,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286969262] [2022-11-03 03:43:48,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:43:48,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-03 03:43:48,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:43:48,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-03 03:43:48,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2022-11-03 03:43:48,203 INFO L87 Difference]: Start difference. First operand 1842 states and 4100 transitions. Second operand has 16 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 states have internal predecessors, (20), 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 03:43:54,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:43:54,118 INFO L93 Difference]: Finished difference Result 2953 states and 6581 transitions. [2022-11-03 03:43:54,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-03 03:43:54,119 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 states have internal predecessors, (20), 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 20 [2022-11-03 03:43:54,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:43:54,122 INFO L225 Difference]: With dead ends: 2953 [2022-11-03 03:43:54,123 INFO L226 Difference]: Without dead ends: 2953 [2022-11-03 03:43:54,123 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 278 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=297, Invalid=1109, Unknown=0, NotChecked=0, Total=1406 [2022-11-03 03:43:54,123 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 465 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 2687 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 465 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 2746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 2687 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-11-03 03:43:54,123 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [465 Valid, 19 Invalid, 2746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 2687 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-11-03 03:43:54,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2953 states. [2022-11-03 03:43:54,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2953 to 1847. [2022-11-03 03:43:54,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1847 states, 1837 states have (on average 2.237887860642352) internal successors, (4111), 1846 states have internal predecessors, (4111), 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 03:43:54,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1847 states to 1847 states and 4111 transitions. [2022-11-03 03:43:54,151 INFO L78 Accepts]: Start accepts. Automaton has 1847 states and 4111 transitions. Word has length 20 [2022-11-03 03:43:54,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:43:54,151 INFO L495 AbstractCegarLoop]: Abstraction has 1847 states and 4111 transitions. [2022-11-03 03:43:54,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 states have internal predecessors, (20), 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 03:43:54,151 INFO L276 IsEmpty]: Start isEmpty. Operand 1847 states and 4111 transitions. [2022-11-03 03:43:54,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-03 03:43:54,152 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:43:54,152 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] [2022-11-03 03:43:54,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2022-11-03 03:43:54,152 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-11-03 03:43:54,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:43:54,153 INFO L85 PathProgramCache]: Analyzing trace with hash 683209381, now seen corresponding path program 19 times [2022-11-03 03:43:54,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:43:54,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396848456] [2022-11-03 03:43:54,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:43:54,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:43:54,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:43:57,751 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 03:43:57,751 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:43:57,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396848456] [2022-11-03 03:43:57,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396848456] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:43:57,751 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:43:57,751 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-03 03:43:57,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025359009] [2022-11-03 03:43:57,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:43:57,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-03 03:43:57,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:43:57,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-03 03:43:57,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2022-11-03 03:43:57,752 INFO L87 Difference]: Start difference. First operand 1847 states and 4111 transitions. Second operand has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 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 03:44:08,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:44:08,480 INFO L93 Difference]: Finished difference Result 2829 states and 6296 transitions. [2022-11-03 03:44:08,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-03 03:44:08,480 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 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 20 [2022-11-03 03:44:08,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:44:08,484 INFO L225 Difference]: With dead ends: 2829 [2022-11-03 03:44:08,484 INFO L226 Difference]: Without dead ends: 2829 [2022-11-03 03:44:08,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 317 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=422, Invalid=1470, Unknown=0, NotChecked=0, Total=1892 [2022-11-03 03:44:08,485 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 629 mSDsluCounter, 500 mSDsCounter, 0 mSdLazyCounter, 4073 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 629 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 4116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 4073 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-11-03 03:44:08,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [629 Valid, 19 Invalid, 4116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 4073 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2022-11-03 03:44:08,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2829 states. [2022-11-03 03:44:08,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2829 to 1842. [2022-11-03 03:44:08,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1842 states, 1832 states have (on average 2.2379912663755457) internal successors, (4100), 1841 states have internal predecessors, (4100), 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 03:44:08,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1842 states to 1842 states and 4100 transitions. [2022-11-03 03:44:08,524 INFO L78 Accepts]: Start accepts. Automaton has 1842 states and 4100 transitions. Word has length 20 [2022-11-03 03:44:08,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:44:08,524 INFO L495 AbstractCegarLoop]: Abstraction has 1842 states and 4100 transitions. [2022-11-03 03:44:08,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 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 03:44:08,524 INFO L276 IsEmpty]: Start isEmpty. Operand 1842 states and 4100 transitions. [2022-11-03 03:44:08,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-03 03:44:08,526 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:44:08,526 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] [2022-11-03 03:44:08,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2022-11-03 03:44:08,526 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-11-03 03:44:08,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:44:08,527 INFO L85 PathProgramCache]: Analyzing trace with hash -796230367, now seen corresponding path program 20 times [2022-11-03 03:44:08,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:44:08,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916168513] [2022-11-03 03:44:08,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:44:08,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:44:08,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:44:10,362 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 03:44:10,362 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:44:10,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916168513] [2022-11-03 03:44:10,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916168513] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:44:10,362 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:44:10,362 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-03 03:44:10,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659657678] [2022-11-03 03:44:10,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:44:10,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-03 03:44:10,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:44:10,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-03 03:44:10,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2022-11-03 03:44:10,363 INFO L87 Difference]: Start difference. First operand 1842 states and 4100 transitions. Second operand has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 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 03:44:14,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:44:14,837 INFO L93 Difference]: Finished difference Result 2267 states and 5031 transitions. [2022-11-03 03:44:14,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-03 03:44:14,838 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 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 20 [2022-11-03 03:44:14,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:44:14,841 INFO L225 Difference]: With dead ends: 2267 [2022-11-03 03:44:14,841 INFO L226 Difference]: Without dead ends: 2267 [2022-11-03 03:44:14,841 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 304 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=304, Invalid=1102, Unknown=0, NotChecked=0, Total=1406 [2022-11-03 03:44:14,842 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 354 mSDsluCounter, 383 mSDsCounter, 0 mSdLazyCounter, 3036 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 354 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 3079 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 3036 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:44:14,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [354 Valid, 41 Invalid, 3079 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 3036 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-11-03 03:44:14,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2267 states. [2022-11-03 03:44:14,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2267 to 1878. [2022-11-03 03:44:14,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1878 states, 1868 states have (on average 2.2403640256959316) internal successors, (4185), 1877 states have internal predecessors, (4185), 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 03:44:14,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1878 states to 1878 states and 4185 transitions. [2022-11-03 03:44:14,871 INFO L78 Accepts]: Start accepts. Automaton has 1878 states and 4185 transitions. Word has length 20 [2022-11-03 03:44:14,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:44:14,872 INFO L495 AbstractCegarLoop]: Abstraction has 1878 states and 4185 transitions. [2022-11-03 03:44:14,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 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 03:44:14,872 INFO L276 IsEmpty]: Start isEmpty. Operand 1878 states and 4185 transitions. [2022-11-03 03:44:14,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-03 03:44:14,873 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:44:14,873 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] [2022-11-03 03:44:14,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2022-11-03 03:44:14,873 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-11-03 03:44:14,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:44:14,874 INFO L85 PathProgramCache]: Analyzing trace with hash 1331614725, now seen corresponding path program 21 times [2022-11-03 03:44:14,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:44:14,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500851410] [2022-11-03 03:44:14,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:44:14,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:44:14,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:44:17,069 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 03:44:17,069 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:44:17,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500851410] [2022-11-03 03:44:17,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500851410] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:44:17,070 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:44:17,070 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-03 03:44:17,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827198577] [2022-11-03 03:44:17,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:44:17,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-03 03:44:17,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:44:17,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-03 03:44:17,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2022-11-03 03:44:17,071 INFO L87 Difference]: Start difference. First operand 1878 states and 4185 transitions. Second operand has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 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 03:44:21,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:44:21,807 INFO L93 Difference]: Finished difference Result 2973 states and 6637 transitions. [2022-11-03 03:44:21,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-03 03:44:21,807 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 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 20 [2022-11-03 03:44:21,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:44:21,812 INFO L225 Difference]: With dead ends: 2973 [2022-11-03 03:44:21,812 INFO L226 Difference]: Without dead ends: 2973 [2022-11-03 03:44:21,812 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 288 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=269, Invalid=1137, Unknown=0, NotChecked=0, Total=1406 [2022-11-03 03:44:21,813 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 564 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 2404 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 564 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 2479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 2404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-03 03:44:21,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [564 Valid, 39 Invalid, 2479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 2404 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-11-03 03:44:21,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2973 states. [2022-11-03 03:44:21,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2973 to 1848. [2022-11-03 03:44:21,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1848 states, 1838 states have (on average 2.237758433079434) internal successors, (4113), 1847 states have internal predecessors, (4113), 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 03:44:21,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1848 states to 1848 states and 4113 transitions. [2022-11-03 03:44:21,842 INFO L78 Accepts]: Start accepts. Automaton has 1848 states and 4113 transitions. Word has length 20 [2022-11-03 03:44:21,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:44:21,843 INFO L495 AbstractCegarLoop]: Abstraction has 1848 states and 4113 transitions. [2022-11-03 03:44:21,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 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 03:44:21,843 INFO L276 IsEmpty]: Start isEmpty. Operand 1848 states and 4113 transitions. [2022-11-03 03:44:21,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-03 03:44:21,844 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:44:21,844 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] [2022-11-03 03:44:21,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2022-11-03 03:44:21,844 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-11-03 03:44:21,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:44:21,844 INFO L85 PathProgramCache]: Analyzing trace with hash -1904075423, now seen corresponding path program 22 times [2022-11-03 03:44:21,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:44:21,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892864407] [2022-11-03 03:44:21,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:44:21,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:44:21,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:44:25,975 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 03:44:25,975 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:44:25,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892864407] [2022-11-03 03:44:25,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892864407] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:44:25,975 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:44:25,975 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-03 03:44:25,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627010032] [2022-11-03 03:44:25,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:44:25,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-03 03:44:25,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:44:25,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-03 03:44:25,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2022-11-03 03:44:25,976 INFO L87 Difference]: Start difference. First operand 1848 states and 4113 transitions. Second operand has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 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 03:44:34,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:44:34,885 INFO L93 Difference]: Finished difference Result 2433 states and 5395 transitions. [2022-11-03 03:44:34,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-03 03:44:34,886 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 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 20 [2022-11-03 03:44:34,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:44:34,889 INFO L225 Difference]: With dead ends: 2433 [2022-11-03 03:44:34,889 INFO L226 Difference]: Without dead ends: 2433 [2022-11-03 03:44:34,889 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 338 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=355, Invalid=1367, Unknown=0, NotChecked=0, Total=1722 [2022-11-03 03:44:34,889 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 536 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 3235 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 536 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 3268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 3235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-11-03 03:44:34,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [536 Valid, 41 Invalid, 3268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 3235 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-11-03 03:44:34,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2433 states. [2022-11-03 03:44:34,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2433 to 1848. [2022-11-03 03:44:34,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1848 states, 1838 states have (on average 2.237758433079434) internal successors, (4113), 1847 states have internal predecessors, (4113), 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 03:44:34,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1848 states to 1848 states and 4113 transitions. [2022-11-03 03:44:34,914 INFO L78 Accepts]: Start accepts. Automaton has 1848 states and 4113 transitions. Word has length 20 [2022-11-03 03:44:34,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:44:34,914 INFO L495 AbstractCegarLoop]: Abstraction has 1848 states and 4113 transitions. [2022-11-03 03:44:34,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 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 03:44:34,915 INFO L276 IsEmpty]: Start isEmpty. Operand 1848 states and 4113 transitions. [2022-11-03 03:44:34,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-03 03:44:34,915 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:44:34,915 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] [2022-11-03 03:44:34,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2022-11-03 03:44:34,916 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-11-03 03:44:34,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:44:34,916 INFO L85 PathProgramCache]: Analyzing trace with hash -2087880857, now seen corresponding path program 23 times [2022-11-03 03:44:34,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:44:34,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75839477] [2022-11-03 03:44:34,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:44:34,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:44:34,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:44:36,829 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 03:44:36,830 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:44:36,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75839477] [2022-11-03 03:44:36,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75839477] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:44:36,830 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:44:36,830 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-03 03:44:36,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558470130] [2022-11-03 03:44:36,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:44:36,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-03 03:44:36,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:44:36,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-03 03:44:36,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2022-11-03 03:44:36,832 INFO L87 Difference]: Start difference. First operand 1848 states and 4113 transitions. Second operand has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 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 03:44:41,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:44:41,373 INFO L93 Difference]: Finished difference Result 2179 states and 4834 transitions. [2022-11-03 03:44:41,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-03 03:44:41,373 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 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 20 [2022-11-03 03:44:41,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:44:41,376 INFO L225 Difference]: With dead ends: 2179 [2022-11-03 03:44:41,376 INFO L226 Difference]: Without dead ends: 2179 [2022-11-03 03:44:41,377 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=262, Invalid=998, Unknown=0, NotChecked=0, Total=1260 [2022-11-03 03:44:41,377 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 314 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 2921 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 2961 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 2921 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:44:41,377 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [314 Valid, 41 Invalid, 2961 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 2921 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-11-03 03:44:41,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2179 states. [2022-11-03 03:44:41,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2179 to 1812. [2022-11-03 03:44:41,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1812 states, 1802 states have (on average 2.2358490566037736) internal successors, (4029), 1811 states have internal predecessors, (4029), 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 03:44:41,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1812 states to 1812 states and 4029 transitions. [2022-11-03 03:44:41,408 INFO L78 Accepts]: Start accepts. Automaton has 1812 states and 4029 transitions. Word has length 20 [2022-11-03 03:44:41,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:44:41,408 INFO L495 AbstractCegarLoop]: Abstraction has 1812 states and 4029 transitions. [2022-11-03 03:44:41,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 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 03:44:41,408 INFO L276 IsEmpty]: Start isEmpty. Operand 1812 states and 4029 transitions. [2022-11-03 03:44:41,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-03 03:44:41,410 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:44:41,410 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] [2022-11-03 03:44:41,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2022-11-03 03:44:41,410 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-11-03 03:44:41,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:44:41,410 INFO L85 PathProgramCache]: Analyzing trace with hash -856075903, now seen corresponding path program 24 times [2022-11-03 03:44:41,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:44:41,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470454205] [2022-11-03 03:44:41,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:44:41,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:44:41,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:44:44,223 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 03:44:44,223 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:44:44,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470454205] [2022-11-03 03:44:44,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470454205] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:44:44,224 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:44:44,224 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-03 03:44:44,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178020510] [2022-11-03 03:44:44,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:44:44,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-03 03:44:44,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:44:44,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-03 03:44:44,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2022-11-03 03:44:44,225 INFO L87 Difference]: Start difference. First operand 1812 states and 4029 transitions. Second operand has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 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 03:44:51,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:44:51,192 INFO L93 Difference]: Finished difference Result 2820 states and 6277 transitions. [2022-11-03 03:44:51,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-03 03:44:51,193 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 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 20 [2022-11-03 03:44:51,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:44:51,197 INFO L225 Difference]: With dead ends: 2820 [2022-11-03 03:44:51,197 INFO L226 Difference]: Without dead ends: 2820 [2022-11-03 03:44:51,197 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=331, Invalid=1075, Unknown=0, NotChecked=0, Total=1406 [2022-11-03 03:44:51,198 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 481 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 2961 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 481 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 3000 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 2961 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-11-03 03:44:51,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [481 Valid, 39 Invalid, 3000 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 2961 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-11-03 03:44:51,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2820 states. [2022-11-03 03:44:51,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2820 to 1743. [2022-11-03 03:44:51,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1743 states, 1733 states have (on average 2.23600692440854) internal successors, (3875), 1742 states have internal predecessors, (3875), 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 03:44:51,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1743 states to 1743 states and 3875 transitions. [2022-11-03 03:44:51,226 INFO L78 Accepts]: Start accepts. Automaton has 1743 states and 3875 transitions. Word has length 20 [2022-11-03 03:44:51,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:44:51,226 INFO L495 AbstractCegarLoop]: Abstraction has 1743 states and 3875 transitions. [2022-11-03 03:44:51,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 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 03:44:51,226 INFO L276 IsEmpty]: Start isEmpty. Operand 1743 states and 3875 transitions. [2022-11-03 03:44:51,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-03 03:44:51,227 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:44:51,227 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] [2022-11-03 03:44:51,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2022-11-03 03:44:51,227 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-11-03 03:44:51,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:44:51,228 INFO L85 PathProgramCache]: Analyzing trace with hash 1521304551, now seen corresponding path program 25 times [2022-11-03 03:44:51,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:44:51,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794907865] [2022-11-03 03:44:51,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:44:51,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:44:51,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:44:53,008 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 03:44:53,008 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:44:53,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794907865] [2022-11-03 03:44:53,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794907865] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:44:53,008 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:44:53,008 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-03 03:44:53,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436025771] [2022-11-03 03:44:53,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:44:53,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-03 03:44:53,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:44:53,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-03 03:44:53,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2022-11-03 03:44:53,009 INFO L87 Difference]: Start difference. First operand 1743 states and 3875 transitions. Second operand has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 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 03:44:57,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:44:57,197 INFO L93 Difference]: Finished difference Result 2044 states and 4522 transitions. [2022-11-03 03:44:57,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-03 03:44:57,197 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 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 20 [2022-11-03 03:44:57,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:44:57,200 INFO L225 Difference]: With dead ends: 2044 [2022-11-03 03:44:57,200 INFO L226 Difference]: Without dead ends: 2044 [2022-11-03 03:44:57,200 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=157, Invalid=599, Unknown=0, NotChecked=0, Total=756 [2022-11-03 03:44:57,200 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 234 mSDsluCounter, 397 mSDsCounter, 0 mSdLazyCounter, 3072 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 3104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 3072 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-11-03 03:44:57,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 41 Invalid, 3104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 3072 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-11-03 03:44:57,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2044 states. [2022-11-03 03:44:57,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2044 to 1814. [2022-11-03 03:44:57,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1814 states, 1804 states have (on average 2.235033259423503) internal successors, (4032), 1813 states have internal predecessors, (4032), 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 03:44:57,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1814 states to 1814 states and 4032 transitions. [2022-11-03 03:44:57,232 INFO L78 Accepts]: Start accepts. Automaton has 1814 states and 4032 transitions. Word has length 20 [2022-11-03 03:44:57,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:44:57,233 INFO L495 AbstractCegarLoop]: Abstraction has 1814 states and 4032 transitions. [2022-11-03 03:44:57,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 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 03:44:57,233 INFO L276 IsEmpty]: Start isEmpty. Operand 1814 states and 4032 transitions. [2022-11-03 03:44:57,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-03 03:44:57,234 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:44:57,235 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] [2022-11-03 03:44:57,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2022-11-03 03:44:57,235 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-11-03 03:44:57,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:44:57,235 INFO L85 PathProgramCache]: Analyzing trace with hash -1795933467, now seen corresponding path program 26 times [2022-11-03 03:44:57,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:44:57,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937785308] [2022-11-03 03:44:57,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:44:57,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:44:57,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:45:01,238 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 03:45:01,238 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:45:01,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937785308] [2022-11-03 03:45:01,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937785308] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:45:01,239 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:45:01,239 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-03 03:45:01,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664651467] [2022-11-03 03:45:01,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:45:01,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-03 03:45:01,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:45:01,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-03 03:45:01,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2022-11-03 03:45:01,240 INFO L87 Difference]: Start difference. First operand 1814 states and 4032 transitions. Second operand has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 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 03:45:08,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:45:08,756 INFO L93 Difference]: Finished difference Result 2162 states and 4784 transitions. [2022-11-03 03:45:08,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-03 03:45:08,757 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 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 20 [2022-11-03 03:45:08,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:45:08,759 INFO L225 Difference]: With dead ends: 2162 [2022-11-03 03:45:08,759 INFO L226 Difference]: Without dead ends: 2162 [2022-11-03 03:45:08,760 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=171, Invalid=821, Unknown=0, NotChecked=0, Total=992 [2022-11-03 03:45:08,760 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 312 mSDsluCounter, 449 mSDsCounter, 0 mSdLazyCounter, 3651 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 3682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 3651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-11-03 03:45:08,760 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [312 Valid, 41 Invalid, 3682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 3651 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2022-11-03 03:45:08,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2162 states. [2022-11-03 03:45:08,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2162 to 1808. [2022-11-03 03:45:08,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1808 states, 1798 states have (on average 2.235817575083426) internal successors, (4020), 1807 states have internal predecessors, (4020), 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 03:45:08,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1808 states to 1808 states and 4020 transitions. [2022-11-03 03:45:08,792 INFO L78 Accepts]: Start accepts. Automaton has 1808 states and 4020 transitions. Word has length 20 [2022-11-03 03:45:08,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:45:08,793 INFO L495 AbstractCegarLoop]: Abstraction has 1808 states and 4020 transitions. [2022-11-03 03:45:08,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 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 03:45:08,793 INFO L276 IsEmpty]: Start isEmpty. Operand 1808 states and 4020 transitions. [2022-11-03 03:45:08,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-03 03:45:08,794 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:45:08,794 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] [2022-11-03 03:45:08,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2022-11-03 03:45:08,795 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-11-03 03:45:08,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:45:08,795 INFO L85 PathProgramCache]: Analyzing trace with hash -579111213, now seen corresponding path program 27 times [2022-11-03 03:45:08,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:45:08,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299441460] [2022-11-03 03:45:08,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:45:08,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:45:08,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:45:10,556 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 03:45:10,556 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:45:10,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299441460] [2022-11-03 03:45:10,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299441460] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:45:10,557 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:45:10,557 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-03 03:45:10,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722241033] [2022-11-03 03:45:10,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:45:10,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-03 03:45:10,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:45:10,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-03 03:45:10,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2022-11-03 03:45:10,558 INFO L87 Difference]: Start difference. First operand 1808 states and 4020 transitions. Second operand has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 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 03:45:14,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:45:14,115 INFO L93 Difference]: Finished difference Result 2154 states and 4776 transitions. [2022-11-03 03:45:14,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-03 03:45:14,116 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 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 20 [2022-11-03 03:45:14,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:45:14,119 INFO L225 Difference]: With dead ends: 2154 [2022-11-03 03:45:14,119 INFO L226 Difference]: Without dead ends: 2154 [2022-11-03 03:45:14,119 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=180, Invalid=690, Unknown=0, NotChecked=0, Total=870 [2022-11-03 03:45:14,119 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 273 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 2586 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 2621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 2586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-03 03:45:14,119 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [273 Valid, 41 Invalid, 2621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 2586 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-03 03:45:14,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2154 states. [2022-11-03 03:45:14,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2154 to 1796. [2022-11-03 03:45:14,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1796 states, 1786 states have (on average 2.2374020156774916) internal successors, (3996), 1795 states have internal predecessors, (3996), 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 03:45:14,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1796 states to 1796 states and 3996 transitions. [2022-11-03 03:45:14,138 INFO L78 Accepts]: Start accepts. Automaton has 1796 states and 3996 transitions. Word has length 20 [2022-11-03 03:45:14,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:45:14,138 INFO L495 AbstractCegarLoop]: Abstraction has 1796 states and 3996 transitions. [2022-11-03 03:45:14,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 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 03:45:14,138 INFO L276 IsEmpty]: Start isEmpty. Operand 1796 states and 3996 transitions. [2022-11-03 03:45:14,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-03 03:45:14,139 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:45:14,139 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] [2022-11-03 03:45:14,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2022-11-03 03:45:14,139 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-11-03 03:45:14,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:45:14,140 INFO L85 PathProgramCache]: Analyzing trace with hash 238769527, now seen corresponding path program 28 times [2022-11-03 03:45:14,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:45:14,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92984328] [2022-11-03 03:45:14,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:45:14,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:45:14,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:45:17,484 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 03:45:17,484 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:45:17,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92984328] [2022-11-03 03:45:17,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92984328] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:45:17,485 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:45:17,485 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-03 03:45:17,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940602003] [2022-11-03 03:45:17,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:45:17,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-03 03:45:17,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:45:17,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-03 03:45:17,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2022-11-03 03:45:17,486 INFO L87 Difference]: Start difference. First operand 1796 states and 3996 transitions. Second operand has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 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 03:45:23,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:45:23,771 INFO L93 Difference]: Finished difference Result 2434 states and 5411 transitions. [2022-11-03 03:45:23,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-03 03:45:23,771 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 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 20 [2022-11-03 03:45:23,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:45:23,774 INFO L225 Difference]: With dead ends: 2434 [2022-11-03 03:45:23,774 INFO L226 Difference]: Without dead ends: 2434 [2022-11-03 03:45:23,775 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=250, Invalid=940, Unknown=0, NotChecked=0, Total=1190 [2022-11-03 03:45:23,775 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 356 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 3224 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 3266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 3224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-03 03:45:23,775 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [356 Valid, 39 Invalid, 3266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 3224 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-11-03 03:45:23,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2434 states. [2022-11-03 03:45:23,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2434 to 1846. [2022-11-03 03:45:23,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1846 states, 1836 states have (on average 2.2380174291938997) internal successors, (4109), 1845 states have internal predecessors, (4109), 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 03:45:23,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1846 states to 1846 states and 4109 transitions. [2022-11-03 03:45:23,798 INFO L78 Accepts]: Start accepts. Automaton has 1846 states and 4109 transitions. Word has length 20 [2022-11-03 03:45:23,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:45:23,798 INFO L495 AbstractCegarLoop]: Abstraction has 1846 states and 4109 transitions. [2022-11-03 03:45:23,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 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 03:45:23,798 INFO L276 IsEmpty]: Start isEmpty. Operand 1846 states and 4109 transitions. [2022-11-03 03:45:23,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-03 03:45:23,799 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:45:23,799 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] [2022-11-03 03:45:23,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2022-11-03 03:45:23,799 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-11-03 03:45:23,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:45:23,799 INFO L85 PathProgramCache]: Analyzing trace with hash -1716547759, now seen corresponding path program 29 times [2022-11-03 03:45:23,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:45:23,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709251778] [2022-11-03 03:45:23,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:45:23,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:45:23,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:45:25,363 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 03:45:25,363 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:45:25,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709251778] [2022-11-03 03:45:25,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709251778] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:45:25,364 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:45:25,364 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-03 03:45:25,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842166177] [2022-11-03 03:45:25,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:45:25,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-03 03:45:25,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:45:25,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-03 03:45:25,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2022-11-03 03:45:25,365 INFO L87 Difference]: Start difference. First operand 1846 states and 4109 transitions. Second operand has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 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 03:45:28,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:45:28,378 INFO L93 Difference]: Finished difference Result 2293 states and 5126 transitions. [2022-11-03 03:45:28,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-03 03:45:28,378 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 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 20 [2022-11-03 03:45:28,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:45:28,381 INFO L225 Difference]: With dead ends: 2293 [2022-11-03 03:45:28,381 INFO L226 Difference]: Without dead ends: 2293 [2022-11-03 03:45:28,381 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=189, Invalid=681, Unknown=0, NotChecked=0, Total=870 [2022-11-03 03:45:28,382 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 312 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 2134 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 2176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 2134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:45:28,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [312 Valid, 41 Invalid, 2176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 2134 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-03 03:45:28,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2293 states. [2022-11-03 03:45:28,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2293 to 1834. [2022-11-03 03:45:28,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1834 states, 1824 states have (on average 2.2395833333333335) internal successors, (4085), 1833 states have internal predecessors, (4085), 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 03:45:28,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1834 states to 1834 states and 4085 transitions. [2022-11-03 03:45:28,418 INFO L78 Accepts]: Start accepts. Automaton has 1834 states and 4085 transitions. Word has length 20 [2022-11-03 03:45:28,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:45:28,418 INFO L495 AbstractCegarLoop]: Abstraction has 1834 states and 4085 transitions. [2022-11-03 03:45:28,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 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 03:45:28,418 INFO L276 IsEmpty]: Start isEmpty. Operand 1834 states and 4085 transitions. [2022-11-03 03:45:28,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-03 03:45:28,419 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:45:28,419 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] [2022-11-03 03:45:28,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2022-11-03 03:45:28,420 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-11-03 03:45:28,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:45:28,421 INFO L85 PathProgramCache]: Analyzing trace with hash 411297333, now seen corresponding path program 30 times [2022-11-03 03:45:28,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:45:28,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017645164] [2022-11-03 03:45:28,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:45:28,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:45:28,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:45:32,620 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 03:45:32,620 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:45:32,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017645164] [2022-11-03 03:45:32,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017645164] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:45:32,620 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:45:32,620 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-03 03:45:32,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047301222] [2022-11-03 03:45:32,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:45:32,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-03 03:45:32,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:45:32,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-03 03:45:32,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2022-11-03 03:45:32,621 INFO L87 Difference]: Start difference. First operand 1834 states and 4085 transitions. Second operand has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 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 03:45:42,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:45:42,563 INFO L93 Difference]: Finished difference Result 2176 states and 4836 transitions. [2022-11-03 03:45:42,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-03 03:45:42,564 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 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 20 [2022-11-03 03:45:42,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:45:42,566 INFO L225 Difference]: With dead ends: 2176 [2022-11-03 03:45:42,566 INFO L226 Difference]: Without dead ends: 2176 [2022-11-03 03:45:42,567 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=191, Invalid=931, Unknown=0, NotChecked=0, Total=1122 [2022-11-03 03:45:42,567 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 384 mSDsluCounter, 567 mSDsCounter, 0 mSdLazyCounter, 4823 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 4848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 4823 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:45:42,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [384 Valid, 41 Invalid, 4848 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 4823 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2022-11-03 03:45:42,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2176 states. [2022-11-03 03:45:42,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2176 to 1842. [2022-11-03 03:45:42,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1842 states, 1832 states have (on average 2.2396288209606987) internal successors, (4103), 1841 states have internal predecessors, (4103), 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 03:45:42,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1842 states to 1842 states and 4103 transitions. [2022-11-03 03:45:42,590 INFO L78 Accepts]: Start accepts. Automaton has 1842 states and 4103 transitions. Word has length 20 [2022-11-03 03:45:42,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:45:42,590 INFO L495 AbstractCegarLoop]: Abstraction has 1842 states and 4103 transitions. [2022-11-03 03:45:42,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 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 03:45:42,590 INFO L276 IsEmpty]: Start isEmpty. Operand 1842 states and 4103 transitions. [2022-11-03 03:45:42,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-03 03:45:42,591 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:45:42,591 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] [2022-11-03 03:45:42,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2022-11-03 03:45:42,591 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-11-03 03:45:42,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:45:42,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1341917865, now seen corresponding path program 31 times [2022-11-03 03:45:42,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:45:42,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183589646] [2022-11-03 03:45:42,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:45:42,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:45:42,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:45:44,275 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 03:45:44,275 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:45:44,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183589646] [2022-11-03 03:45:44,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183589646] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:45:44,276 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:45:44,276 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-03 03:45:44,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128070215] [2022-11-03 03:45:44,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:45:44,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-03 03:45:44,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:45:44,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-03 03:45:44,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2022-11-03 03:45:44,277 INFO L87 Difference]: Start difference. First operand 1842 states and 4103 transitions. Second operand has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 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 03:45:48,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:45:48,678 INFO L93 Difference]: Finished difference Result 3039 states and 6783 transitions. [2022-11-03 03:45:48,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-03 03:45:48,678 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 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 20 [2022-11-03 03:45:48,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:45:48,682 INFO L225 Difference]: With dead ends: 3039 [2022-11-03 03:45:48,682 INFO L226 Difference]: Without dead ends: 3039 [2022-11-03 03:45:48,682 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=235, Invalid=955, Unknown=0, NotChecked=0, Total=1190 [2022-11-03 03:45:48,682 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 455 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 2726 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 455 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 2773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 2726 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-03 03:45:48,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [455 Valid, 41 Invalid, 2773 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 2726 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-11-03 03:45:48,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3039 states. [2022-11-03 03:45:48,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3039 to 1748. [2022-11-03 03:45:48,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1748 states, 1738 states have (on average 2.2353279631760645) internal successors, (3885), 1747 states have internal predecessors, (3885), 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 03:45:48,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1748 states to 1748 states and 3885 transitions. [2022-11-03 03:45:48,708 INFO L78 Accepts]: Start accepts. Automaton has 1748 states and 3885 transitions. Word has length 20 [2022-11-03 03:45:48,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:45:48,709 INFO L495 AbstractCegarLoop]: Abstraction has 1748 states and 3885 transitions. [2022-11-03 03:45:48,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 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 03:45:48,709 INFO L276 IsEmpty]: Start isEmpty. Operand 1748 states and 3885 transitions. [2022-11-03 03:45:48,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-03 03:45:48,710 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:45:48,710 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] [2022-11-03 03:45:48,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2022-11-03 03:45:48,711 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-11-03 03:45:48,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:45:48,711 INFO L85 PathProgramCache]: Analyzing trace with hash 1470574481, now seen corresponding path program 32 times [2022-11-03 03:45:48,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:45:48,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536774125] [2022-11-03 03:45:48,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:45:48,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:45:48,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:45:51,497 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 03:45:51,497 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:45:51,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536774125] [2022-11-03 03:45:51,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536774125] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:45:51,497 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:45:51,498 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-03 03:45:51,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817312580] [2022-11-03 03:45:51,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:45:51,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-03 03:45:51,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:45:51,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-03 03:45:51,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2022-11-03 03:45:51,498 INFO L87 Difference]: Start difference. First operand 1748 states and 3885 transitions. Second operand has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 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 03:45:57,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:45:57,046 INFO L93 Difference]: Finished difference Result 2280 states and 5056 transitions. [2022-11-03 03:45:57,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-03 03:45:57,047 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 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 20 [2022-11-03 03:45:57,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:45:57,049 INFO L225 Difference]: With dead ends: 2280 [2022-11-03 03:45:57,049 INFO L226 Difference]: Without dead ends: 2280 [2022-11-03 03:45:57,050 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=214, Invalid=778, Unknown=0, NotChecked=0, Total=992 [2022-11-03 03:45:57,050 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 486 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 2889 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 486 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 2919 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 2889 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-11-03 03:45:57,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [486 Valid, 41 Invalid, 2919 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 2889 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-11-03 03:45:57,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2280 states. [2022-11-03 03:45:57,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2280 to 1730. [2022-11-03 03:45:57,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1730 states, 1720 states have (on average 2.236046511627907) internal successors, (3846), 1729 states have internal predecessors, (3846), 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 03:45:57,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1730 states to 1730 states and 3846 transitions. [2022-11-03 03:45:57,074 INFO L78 Accepts]: Start accepts. Automaton has 1730 states and 3846 transitions. Word has length 20 [2022-11-03 03:45:57,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:45:57,074 INFO L495 AbstractCegarLoop]: Abstraction has 1730 states and 3846 transitions. [2022-11-03 03:45:57,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 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 03:45:57,074 INFO L276 IsEmpty]: Start isEmpty. Operand 1730 states and 3846 transitions. [2022-11-03 03:45:57,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-03 03:45:57,075 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:45:57,075 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] [2022-11-03 03:45:57,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2022-11-03 03:45:57,076 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-11-03 03:45:57,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:45:57,076 INFO L85 PathProgramCache]: Analyzing trace with hash -1756468091, now seen corresponding path program 1 times [2022-11-03 03:45:57,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:45:57,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248105267] [2022-11-03 03:45:57,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:45:57,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:45:57,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:45:58,313 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 03:45:58,313 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:45:58,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248105267] [2022-11-03 03:45:58,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248105267] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:45:58,313 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:45:58,313 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-03 03:45:58,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853586260] [2022-11-03 03:45:58,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:45:58,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-03 03:45:58,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:45:58,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-03 03:45:58,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-11-03 03:45:58,315 INFO L87 Difference]: Start difference. First operand 1730 states and 3846 transitions. Second operand has 12 states, 12 states have (on average 1.75) internal successors, (21), 11 states have internal predecessors, (21), 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 03:46:00,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:46:00,147 INFO L93 Difference]: Finished difference Result 1802 states and 3990 transitions. [2022-11-03 03:46:00,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-03 03:46:00,147 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.75) internal successors, (21), 11 states have internal predecessors, (21), 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 21 [2022-11-03 03:46:00,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:46:00,150 INFO L225 Difference]: With dead ends: 1802 [2022-11-03 03:46:00,150 INFO L226 Difference]: Without dead ends: 1802 [2022-11-03 03:46:00,150 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=107, Invalid=235, Unknown=0, NotChecked=0, Total=342 [2022-11-03 03:46:00,150 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 91 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 1222 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 1229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:46:00,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 19 Invalid, 1229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1222 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-03 03:46:00,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1802 states. [2022-11-03 03:46:00,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1802 to 1737. [2022-11-03 03:46:00,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1737 states, 1727 states have (on average 2.235089751013318) internal successors, (3860), 1736 states have internal predecessors, (3860), 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 03:46:00,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1737 states to 1737 states and 3860 transitions. [2022-11-03 03:46:00,178 INFO L78 Accepts]: Start accepts. Automaton has 1737 states and 3860 transitions. Word has length 21 [2022-11-03 03:46:00,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:46:00,179 INFO L495 AbstractCegarLoop]: Abstraction has 1737 states and 3860 transitions. [2022-11-03 03:46:00,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.75) internal successors, (21), 11 states have internal predecessors, (21), 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 03:46:00,179 INFO L276 IsEmpty]: Start isEmpty. Operand 1737 states and 3860 transitions. [2022-11-03 03:46:00,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-03 03:46:00,180 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:46:00,180 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] [2022-11-03 03:46:00,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2022-11-03 03:46:00,180 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-11-03 03:46:00,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:46:00,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1605283415, now seen corresponding path program 2 times [2022-11-03 03:46:00,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:46:00,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475297704] [2022-11-03 03:46:00,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:46:00,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:46:00,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:46:01,643 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 03:46:01,644 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:46:01,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475297704] [2022-11-03 03:46:01,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475297704] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:46:01,644 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:46:01,644 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-03 03:46:01,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896157984] [2022-11-03 03:46:01,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:46:01,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-03 03:46:01,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:46:01,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-03 03:46:01,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-11-03 03:46:01,645 INFO L87 Difference]: Start difference. First operand 1737 states and 3860 transitions. Second operand has 14 states, 14 states have (on average 1.5) internal successors, (21), 13 states have internal predecessors, (21), 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 03:46:03,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:46:03,604 INFO L93 Difference]: Finished difference Result 1942 states and 4237 transitions. [2022-11-03 03:46:03,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-03 03:46:03,604 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.5) internal successors, (21), 13 states have internal predecessors, (21), 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 21 [2022-11-03 03:46:03,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:46:03,607 INFO L225 Difference]: With dead ends: 1942 [2022-11-03 03:46:03,607 INFO L226 Difference]: Without dead ends: 1889 [2022-11-03 03:46:03,607 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=98, Invalid=364, Unknown=0, NotChecked=0, Total=462 [2022-11-03 03:46:03,607 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 156 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 1601 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 1620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1601 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-03 03:46:03,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 22 Invalid, 1620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1601 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-03 03:46:03,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1889 states. [2022-11-03 03:46:03,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1889 to 1786. [2022-11-03 03:46:03,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1786 states, 1776 states have (on average 2.230855855855856) internal successors, (3962), 1785 states have internal predecessors, (3962), 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 03:46:03,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1786 states to 1786 states and 3962 transitions. [2022-11-03 03:46:03,626 INFO L78 Accepts]: Start accepts. Automaton has 1786 states and 3962 transitions. Word has length 21 [2022-11-03 03:46:03,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:46:03,627 INFO L495 AbstractCegarLoop]: Abstraction has 1786 states and 3962 transitions. [2022-11-03 03:46:03,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.5) internal successors, (21), 13 states have internal predecessors, (21), 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 03:46:03,627 INFO L276 IsEmpty]: Start isEmpty. Operand 1786 states and 3962 transitions. [2022-11-03 03:46:03,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-03 03:46:03,627 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:46:03,627 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] [2022-11-03 03:46:03,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2022-11-03 03:46:03,628 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-11-03 03:46:03,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:46:03,629 INFO L85 PathProgramCache]: Analyzing trace with hash -2051790027, now seen corresponding path program 3 times [2022-11-03 03:46:03,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:46:03,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955106554] [2022-11-03 03:46:03,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:46:03,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:46:03,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:46:03,926 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 03:46:03,927 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:46:03,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955106554] [2022-11-03 03:46:03,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955106554] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:46:03,927 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:46:03,927 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 03:46:03,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084146931] [2022-11-03 03:46:03,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:46:03,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 03:46:03,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:46:03,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 03:46:03,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-03 03:46:03,928 INFO L87 Difference]: Start difference. First operand 1786 states and 3962 transitions. Second operand has 8 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 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 03:46:05,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:46:05,105 INFO L93 Difference]: Finished difference Result 2716 states and 6002 transitions. [2022-11-03 03:46:05,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-03 03:46:05,106 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 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 21 [2022-11-03 03:46:05,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:46:05,111 INFO L225 Difference]: With dead ends: 2716 [2022-11-03 03:46:05,111 INFO L226 Difference]: Without dead ends: 2613 [2022-11-03 03:46:05,111 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2022-11-03 03:46:05,111 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 355 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 1024 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 1052 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1024 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:46:05,111 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [355 Valid, 31 Invalid, 1052 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1024 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-03 03:46:05,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2613 states. [2022-11-03 03:46:05,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2613 to 1965. [2022-11-03 03:46:05,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1965 states, 1955 states have (on average 2.263938618925831) internal successors, (4426), 1964 states have internal predecessors, (4426), 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 03:46:05,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1965 states to 1965 states and 4426 transitions. [2022-11-03 03:46:05,150 INFO L78 Accepts]: Start accepts. Automaton has 1965 states and 4426 transitions. Word has length 21 [2022-11-03 03:46:05,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:46:05,150 INFO L495 AbstractCegarLoop]: Abstraction has 1965 states and 4426 transitions. [2022-11-03 03:46:05,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 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 03:46:05,151 INFO L276 IsEmpty]: Start isEmpty. Operand 1965 states and 4426 transitions. [2022-11-03 03:46:05,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-03 03:46:05,152 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:46:05,152 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] [2022-11-03 03:46:05,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2022-11-03 03:46:05,153 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-11-03 03:46:05,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:46:05,153 INFO L85 PathProgramCache]: Analyzing trace with hash 1100857349, now seen corresponding path program 1 times [2022-11-03 03:46:05,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:46:05,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606648791] [2022-11-03 03:46:05,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:46:05,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:46:05,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:46:08,474 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 03:46:08,474 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:46:08,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606648791] [2022-11-03 03:46:08,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606648791] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:46:08,474 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:46:08,474 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-11-03 03:46:08,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769008380] [2022-11-03 03:46:08,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:46:08,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-03 03:46:08,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:46:08,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-03 03:46:08,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2022-11-03 03:46:08,475 INFO L87 Difference]: Start difference. First operand 1965 states and 4426 transitions. Second operand has 19 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 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 03:46:14,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:46:14,254 INFO L93 Difference]: Finished difference Result 3158 states and 7118 transitions. [2022-11-03 03:46:14,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-03 03:46:14,257 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 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 21 [2022-11-03 03:46:14,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:46:14,262 INFO L225 Difference]: With dead ends: 3158 [2022-11-03 03:46:14,262 INFO L226 Difference]: Without dead ends: 3158 [2022-11-03 03:46:14,262 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 371 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=347, Invalid=1459, Unknown=0, NotChecked=0, Total=1806 [2022-11-03 03:46:14,262 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 571 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 2698 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 571 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 2751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 2698 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:46:14,262 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [571 Valid, 39 Invalid, 2751 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 2698 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-11-03 03:46:14,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3158 states. [2022-11-03 03:46:14,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3158 to 1963. [2022-11-03 03:46:14,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1963 states, 1953 states have (on average 2.2642089093701996) internal successors, (4422), 1962 states have internal predecessors, (4422), 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 03:46:14,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1963 states to 1963 states and 4422 transitions. [2022-11-03 03:46:14,292 INFO L78 Accepts]: Start accepts. Automaton has 1963 states and 4422 transitions. Word has length 21 [2022-11-03 03:46:14,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:46:14,292 INFO L495 AbstractCegarLoop]: Abstraction has 1963 states and 4422 transitions. [2022-11-03 03:46:14,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 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 03:46:14,293 INFO L276 IsEmpty]: Start isEmpty. Operand 1963 states and 4422 transitions. [2022-11-03 03:46:14,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-03 03:46:14,294 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:46:14,294 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] [2022-11-03 03:46:14,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2022-11-03 03:46:14,294 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-11-03 03:46:14,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:46:14,295 INFO L85 PathProgramCache]: Analyzing trace with hash -86545857, now seen corresponding path program 2 times [2022-11-03 03:46:14,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:46:14,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777188668] [2022-11-03 03:46:14,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:46:14,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:46:14,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:46:17,122 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 03:46:17,122 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:46:17,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777188668] [2022-11-03 03:46:17,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777188668] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:46:17,122 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:46:17,122 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-11-03 03:46:17,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136868354] [2022-11-03 03:46:17,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:46:17,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-03 03:46:17,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:46:17,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-03 03:46:17,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2022-11-03 03:46:17,123 INFO L87 Difference]: Start difference. First operand 1963 states and 4422 transitions. Second operand has 19 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 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 03:46:21,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:46:21,137 INFO L93 Difference]: Finished difference Result 2873 states and 6472 transitions. [2022-11-03 03:46:21,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-03 03:46:21,137 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 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 21 [2022-11-03 03:46:21,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:46:21,141 INFO L225 Difference]: With dead ends: 2873 [2022-11-03 03:46:21,141 INFO L226 Difference]: Without dead ends: 2873 [2022-11-03 03:46:21,141 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=173, Invalid=639, Unknown=0, NotChecked=0, Total=812 [2022-11-03 03:46:21,142 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 240 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 2694 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 2731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 2694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:46:21,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [240 Valid, 39 Invalid, 2731 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 2694 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-11-03 03:46:21,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2873 states. [2022-11-03 03:46:21,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2873 to 2048. [2022-11-03 03:46:21,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2048 states, 2038 states have (on average 2.2625122669283613) internal successors, (4611), 2047 states have internal predecessors, (4611), 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 03:46:21,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2048 states to 2048 states and 4611 transitions. [2022-11-03 03:46:21,170 INFO L78 Accepts]: Start accepts. Automaton has 2048 states and 4611 transitions. Word has length 21 [2022-11-03 03:46:21,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:46:21,170 INFO L495 AbstractCegarLoop]: Abstraction has 2048 states and 4611 transitions. [2022-11-03 03:46:21,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 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 03:46:21,171 INFO L276 IsEmpty]: Start isEmpty. Operand 2048 states and 4611 transitions. [2022-11-03 03:46:21,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-03 03:46:21,171 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:46:21,172 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] [2022-11-03 03:46:21,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2022-11-03 03:46:21,172 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-11-03 03:46:21,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:46:21,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1586078335, now seen corresponding path program 4 times [2022-11-03 03:46:21,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:46:21,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665702209] [2022-11-03 03:46:21,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:46:21,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:46:21,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:46:22,855 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 03:46:22,855 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:46:22,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665702209] [2022-11-03 03:46:22,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665702209] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:46:22,856 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:46:22,856 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-03 03:46:22,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579913127] [2022-11-03 03:46:22,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:46:22,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-03 03:46:22,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:46:22,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-03 03:46:22,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2022-11-03 03:46:22,857 INFO L87 Difference]: Start difference. First operand 2048 states and 4611 transitions. Second operand has 15 states, 15 states have (on average 1.4) internal successors, (21), 14 states have internal predecessors, (21), 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 03:46:25,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:46:25,385 INFO L93 Difference]: Finished difference Result 2188 states and 4855 transitions. [2022-11-03 03:46:25,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-03 03:46:25,385 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.4) internal successors, (21), 14 states have internal predecessors, (21), 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 21 [2022-11-03 03:46:25,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:46:25,388 INFO L225 Difference]: With dead ends: 2188 [2022-11-03 03:46:25,388 INFO L226 Difference]: Without dead ends: 2137 [2022-11-03 03:46:25,389 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=129, Invalid=471, Unknown=0, NotChecked=0, Total=600 [2022-11-03 03:46:25,389 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 137 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 1730 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 1747 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1730 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-03 03:46:25,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 36 Invalid, 1747 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1730 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-03 03:46:25,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2137 states. [2022-11-03 03:46:25,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2137 to 2058. [2022-11-03 03:46:25,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2058 states, 2048 states have (on average 2.26220703125) internal successors, (4633), 2057 states have internal predecessors, (4633), 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 03:46:25,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2058 states to 2058 states and 4633 transitions. [2022-11-03 03:46:25,414 INFO L78 Accepts]: Start accepts. Automaton has 2058 states and 4633 transitions. Word has length 21 [2022-11-03 03:46:25,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:46:25,414 INFO L495 AbstractCegarLoop]: Abstraction has 2058 states and 4633 transitions. [2022-11-03 03:46:25,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.4) internal successors, (21), 14 states have internal predecessors, (21), 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 03:46:25,415 INFO L276 IsEmpty]: Start isEmpty. Operand 2058 states and 4633 transitions. [2022-11-03 03:46:25,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-03 03:46:25,415 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:46:25,416 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] [2022-11-03 03:46:25,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2022-11-03 03:46:25,416 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-11-03 03:46:25,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:46:25,416 INFO L85 PathProgramCache]: Analyzing trace with hash 158290689, now seen corresponding path program 3 times [2022-11-03 03:46:25,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:46:25,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119272353] [2022-11-03 03:46:25,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:46:25,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:46:25,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:46:29,183 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 03:46:29,183 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:46:29,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119272353] [2022-11-03 03:46:29,183 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119272353] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:46:29,184 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:46:29,184 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-11-03 03:46:29,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808799249] [2022-11-03 03:46:29,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:46:29,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-03 03:46:29,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:46:29,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-03 03:46:29,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2022-11-03 03:46:29,185 INFO L87 Difference]: Start difference. First operand 2058 states and 4633 transitions. Second operand has 19 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 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 03:46:34,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:46:34,540 INFO L93 Difference]: Finished difference Result 2902 states and 6544 transitions. [2022-11-03 03:46:34,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-03 03:46:34,541 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 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 21 [2022-11-03 03:46:34,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:46:34,545 INFO L225 Difference]: With dead ends: 2902 [2022-11-03 03:46:34,545 INFO L226 Difference]: Without dead ends: 2902 [2022-11-03 03:46:34,545 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=204, Invalid=788, Unknown=0, NotChecked=0, Total=992 [2022-11-03 03:46:34,545 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 315 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 3183 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 3223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 3183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-11-03 03:46:34,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [315 Valid, 39 Invalid, 3223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 3183 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-11-03 03:46:34,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2902 states. [2022-11-03 03:46:34,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2902 to 1996. [2022-11-03 03:46:34,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1996 states, 1986 states have (on average 2.2618328298086605) internal successors, (4492), 1995 states have internal predecessors, (4492), 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 03:46:34,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1996 states to 1996 states and 4492 transitions. [2022-11-03 03:46:34,572 INFO L78 Accepts]: Start accepts. Automaton has 1996 states and 4492 transitions. Word has length 21 [2022-11-03 03:46:34,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:46:34,572 INFO L495 AbstractCegarLoop]: Abstraction has 1996 states and 4492 transitions. [2022-11-03 03:46:34,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 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 03:46:34,572 INFO L276 IsEmpty]: Start isEmpty. Operand 1996 states and 4492 transitions. [2022-11-03 03:46:34,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-03 03:46:34,574 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:46:34,574 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] [2022-11-03 03:46:34,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2022-11-03 03:46:34,574 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-11-03 03:46:34,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:46:34,574 INFO L85 PathProgramCache]: Analyzing trace with hash 1830914881, now seen corresponding path program 5 times [2022-11-03 03:46:34,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:46:34,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091899719] [2022-11-03 03:46:34,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:46:34,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:46:34,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:46:35,655 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 03:46:35,655 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:46:35,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091899719] [2022-11-03 03:46:35,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091899719] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:46:35,655 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:46:35,655 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-03 03:46:35,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577936126] [2022-11-03 03:46:35,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:46:35,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-03 03:46:35,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:46:35,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-03 03:46:35,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-03 03:46:35,656 INFO L87 Difference]: Start difference. First operand 1996 states and 4492 transitions. Second operand has 10 states, 10 states have (on average 2.1) internal successors, (21), 9 states have internal predecessors, (21), 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 03:46:36,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:46:36,997 INFO L93 Difference]: Finished difference Result 2139 states and 4747 transitions. [2022-11-03 03:46:36,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-03 03:46:36,997 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 9 states have internal predecessors, (21), 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 21 [2022-11-03 03:46:36,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:46:36,999 INFO L225 Difference]: With dead ends: 2139 [2022-11-03 03:46:37,000 INFO L226 Difference]: Without dead ends: 2086 [2022-11-03 03:46:37,000 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-11-03 03:46:37,000 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 94 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 1166 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 1178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:46:37,000 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 22 Invalid, 1178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1166 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-03 03:46:37,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2086 states. [2022-11-03 03:46:37,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2086 to 1959. [2022-11-03 03:46:37,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1959 states, 1949 states have (on average 2.2657773217034376) internal successors, (4416), 1958 states have internal predecessors, (4416), 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 03:46:37,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1959 states to 1959 states and 4416 transitions. [2022-11-03 03:46:37,022 INFO L78 Accepts]: Start accepts. Automaton has 1959 states and 4416 transitions. Word has length 21 [2022-11-03 03:46:37,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:46:37,023 INFO L495 AbstractCegarLoop]: Abstraction has 1959 states and 4416 transitions. [2022-11-03 03:46:37,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 9 states have internal predecessors, (21), 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 03:46:37,023 INFO L276 IsEmpty]: Start isEmpty. Operand 1959 states and 4416 transitions. [2022-11-03 03:46:37,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-03 03:46:37,024 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:46:37,024 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] [2022-11-03 03:46:37,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2022-11-03 03:46:37,024 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-11-03 03:46:37,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:46:37,025 INFO L85 PathProgramCache]: Analyzing trace with hash -1659178027, now seen corresponding path program 4 times [2022-11-03 03:46:37,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:46:37,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894240499] [2022-11-03 03:46:37,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:46:37,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:46:37,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:46:38,883 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 03:46:38,883 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:46:38,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894240499] [2022-11-03 03:46:38,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894240499] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:46:38,883 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:46:38,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-03 03:46:38,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866160204] [2022-11-03 03:46:38,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:46:38,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-03 03:46:38,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:46:38,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-03 03:46:38,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2022-11-03 03:46:38,884 INFO L87 Difference]: Start difference. First operand 1959 states and 4416 transitions. Second operand has 17 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 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 03:46:43,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:46:43,839 INFO L93 Difference]: Finished difference Result 3097 states and 6974 transitions. [2022-11-03 03:46:43,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-03 03:46:43,840 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 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 21 [2022-11-03 03:46:43,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:46:43,844 INFO L225 Difference]: With dead ends: 3097 [2022-11-03 03:46:43,844 INFO L226 Difference]: Without dead ends: 3097 [2022-11-03 03:46:43,845 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=282, Invalid=908, Unknown=0, NotChecked=0, Total=1190 [2022-11-03 03:46:43,845 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 480 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 2874 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 480 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 2913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 2874 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:46:43,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [480 Valid, 39 Invalid, 2913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 2874 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-11-03 03:46:43,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3097 states. [2022-11-03 03:46:43,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3097 to 1848. [2022-11-03 03:46:43,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1848 states, 1838 states have (on average 2.267138193688792) internal successors, (4167), 1847 states have internal predecessors, (4167), 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 03:46:43,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1848 states to 1848 states and 4167 transitions. [2022-11-03 03:46:43,888 INFO L78 Accepts]: Start accepts. Automaton has 1848 states and 4167 transitions. Word has length 21 [2022-11-03 03:46:43,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:46:43,888 INFO L495 AbstractCegarLoop]: Abstraction has 1848 states and 4167 transitions. [2022-11-03 03:46:43,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 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 03:46:43,888 INFO L276 IsEmpty]: Start isEmpty. Operand 1848 states and 4167 transitions. [2022-11-03 03:46:43,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-03 03:46:43,889 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:46:43,889 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:46:43,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2022-11-03 03:46:43,889 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-11-03 03:46:43,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:46:43,890 INFO L85 PathProgramCache]: Analyzing trace with hash -61022933, now seen corresponding path program 5 times [2022-11-03 03:46:43,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:46:43,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24261419] [2022-11-03 03:46:43,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:46:43,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:46:43,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:46:46,839 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:46:46,839 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:46:46,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24261419] [2022-11-03 03:46:46,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24261419] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:46:46,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [592076057] [2022-11-03 03:46:46,839 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 03:46:46,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:46:46,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5f6adc-d985-4909-ab28-900e3f737a84/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:46:46,841 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5f6adc-d985-4909-ab28-900e3f737a84/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:46:46,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5f6adc-d985-4909-ab28-900e3f737a84/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 03:46:47,496 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-03 03:46:47,497 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 03:46:47,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 146 conjunts are in the unsatisfiable core [2022-11-03 03:46:47,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:46:47,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:46:47,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:46:47,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:46:47,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:46:47,677 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-11-03 03:46:47,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:46:47,683 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 17 [2022-11-03 03:46:47,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:46:47,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:46:47,718 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 44 [2022-11-03 03:46:47,760 INFO L356 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2022-11-03 03:46:47,761 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 102 treesize of output 82 [2022-11-03 03:46:47,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:46:47,779 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-03 03:46:48,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:46:48,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:46:48,505 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:46:48,506 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 10 [2022-11-03 03:46:48,805 INFO L356 Elim1Store]: treesize reduction 73, result has 11.0 percent of original size [2022-11-03 03:46:48,805 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 91 treesize of output 72 [2022-11-03 03:46:48,823 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2022-11-03 03:46:48,977 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-03 03:46:48,977 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 40 [2022-11-03 03:46:49,230 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-03 03:46:49,230 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 43 treesize of output 40 [2022-11-03 03:46:49,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:46:49,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:46:49,261 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:46:49,262 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 29 [2022-11-03 03:46:49,470 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2022-11-03 03:46:49,474 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:46:49,474 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:46:49,573 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7936 Int) (v_ArrVal_7934 (Array Int Int))) (not (= (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_pusherThread1of1ForFork0_fifo_push_#t~mem30#1.base| v_ArrVal_7934))) (store .cse0 |c_pusherThread1of1ForFork0_fifo_push_~self#1.base| (store (select .cse0 |c_pusherThread1of1ForFork0_fifo_push_~self#1.base|) (+ |c_pusherThread1of1ForFork0_fifo_push_~self#1.offset| 4) v_ArrVal_7936))) |c_ULTIMATE.start_main_~#q~1#1.base|) |c_ULTIMATE.start_main_~#q~1#1.offset|) 0))) is different from false [2022-11-03 03:46:49,597 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7936 Int) (v_ArrVal_7934 (Array Int Int))) (not (= (select (select (let ((.cse1 (+ |c_pusherThread1of1ForFork0_fifo_push_~self#1.offset| 4))) (let ((.cse0 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_pusherThread1of1ForFork0_fifo_push_~self#1.base|) .cse1) v_ArrVal_7934))) (store .cse0 |c_pusherThread1of1ForFork0_fifo_push_~self#1.base| (store (select .cse0 |c_pusherThread1of1ForFork0_fifo_push_~self#1.base|) .cse1 v_ArrVal_7936)))) |c_ULTIMATE.start_main_~#q~1#1.base|) |c_ULTIMATE.start_main_~#q~1#1.offset|) 0))) is different from false [2022-11-03 03:46:49,618 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7936 Int) (v_ArrVal_7933 (Array Int Int)) (v_ArrVal_7934 (Array Int Int))) (not (= (select (select (let ((.cse1 (+ |c_pusherThread1of1ForFork0_fifo_push_~self#1.offset| 4))) (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_pusherThread1of1ForFork0_fifo_push_~t~0#1.base| v_ArrVal_7933))) (store .cse2 (select (select .cse2 |c_pusherThread1of1ForFork0_fifo_push_~self#1.base|) .cse1) v_ArrVal_7934)))) (store .cse0 |c_pusherThread1of1ForFork0_fifo_push_~self#1.base| (store (select .cse0 |c_pusherThread1of1ForFork0_fifo_push_~self#1.base|) .cse1 v_ArrVal_7936)))) |c_ULTIMATE.start_main_~#q~1#1.base|) |c_ULTIMATE.start_main_~#q~1#1.offset|) 0))) is different from false [2022-11-03 03:46:49,639 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7932 (Array Int Int)) (v_ArrVal_7936 Int) (v_ArrVal_7933 (Array Int Int)) (v_ArrVal_7934 (Array Int Int))) (not (= (select (select (let ((.cse1 (+ |c_pusherThread1of1ForFork0_fifo_push_~self#1.offset| 4))) (let ((.cse0 (let ((.cse2 (store (store |c_#memory_$Pointer$.base| |c_pusherThread1of1ForFork0_fifo_push_#t~mem26#1.base| v_ArrVal_7932) |c_pusherThread1of1ForFork0_fifo_push_~t~0#1.base| v_ArrVal_7933))) (store .cse2 (select (select .cse2 |c_pusherThread1of1ForFork0_fifo_push_~self#1.base|) .cse1) v_ArrVal_7934)))) (store .cse0 |c_pusherThread1of1ForFork0_fifo_push_~self#1.base| (store (select .cse0 |c_pusherThread1of1ForFork0_fifo_push_~self#1.base|) .cse1 v_ArrVal_7936)))) |c_ULTIMATE.start_main_~#q~1#1.base|) |c_ULTIMATE.start_main_~#q~1#1.offset|) 0))) is different from false [2022-11-03 03:46:49,654 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7932 (Array Int Int)) (v_ArrVal_7936 Int) (v_ArrVal_7933 (Array Int Int)) (v_ArrVal_7934 (Array Int Int))) (not (= (select (select (let ((.cse1 (+ |c_pusherThread1of1ForFork0_fifo_push_~self#1.offset| 4))) (let ((.cse0 (let ((.cse2 (store (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_pusherThread1of1ForFork0_fifo_push_~t~0#1.base|) (+ 12 |c_pusherThread1of1ForFork0_fifo_push_~t~0#1.offset|)) v_ArrVal_7932) |c_pusherThread1of1ForFork0_fifo_push_~t~0#1.base| v_ArrVal_7933))) (store .cse2 (select (select .cse2 |c_pusherThread1of1ForFork0_fifo_push_~self#1.base|) .cse1) v_ArrVal_7934)))) (store .cse0 |c_pusherThread1of1ForFork0_fifo_push_~self#1.base| (store (select .cse0 |c_pusherThread1of1ForFork0_fifo_push_~self#1.base|) .cse1 v_ArrVal_7936)))) |c_ULTIMATE.start_main_~#q~1#1.base|) |c_ULTIMATE.start_main_~#q~1#1.offset|) 0))) is different from false [2022-11-03 03:46:49,669 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7932 (Array Int Int)) (v_ArrVal_7936 Int) (v_ArrVal_7933 (Array Int Int)) (v_ArrVal_7934 (Array Int Int))) (not (= (select (select (let ((.cse1 (+ |c_pusherThread1of1ForFork0_fifo_push_~self#1.offset| 4))) (let ((.cse0 (let ((.cse2 (let ((.cse3 (select (select |c_#memory_$Pointer$.base| |c_pusherThread1of1ForFork0_fifo_push_~self#1.base|) .cse1))) (store (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| .cse3) (+ 12 (select (select |c_#memory_$Pointer$.offset| |c_pusherThread1of1ForFork0_fifo_push_~self#1.base|) .cse1))) v_ArrVal_7932) .cse3 v_ArrVal_7933)))) (store .cse2 (select (select .cse2 |c_pusherThread1of1ForFork0_fifo_push_~self#1.base|) .cse1) v_ArrVal_7934)))) (store .cse0 |c_pusherThread1of1ForFork0_fifo_push_~self#1.base| (store (select .cse0 |c_pusherThread1of1ForFork0_fifo_push_~self#1.base|) .cse1 v_ArrVal_7936)))) |c_ULTIMATE.start_main_~#q~1#1.base|) |c_ULTIMATE.start_main_~#q~1#1.offset|) 0))) is different from false [2022-11-03 03:46:49,697 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7932 (Array Int Int)) (v_ArrVal_7936 Int) (v_ArrVal_7933 (Array Int Int)) (v_ArrVal_7934 (Array Int Int))) (not (= (select (select (let ((.cse1 (+ |c_pusherThread1of1ForFork0_~q~0#1.offset| 4))) (let ((.cse0 (let ((.cse2 (let ((.cse3 (select (select |c_#memory_$Pointer$.base| |c_pusherThread1of1ForFork0_~q~0#1.base|) .cse1))) (store (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| .cse3) (+ (select (select |c_#memory_$Pointer$.offset| |c_pusherThread1of1ForFork0_~q~0#1.base|) .cse1) 12)) v_ArrVal_7932) .cse3 v_ArrVal_7933)))) (store .cse2 (select (select .cse2 |c_pusherThread1of1ForFork0_~q~0#1.base|) .cse1) v_ArrVal_7934)))) (store .cse0 |c_pusherThread1of1ForFork0_~q~0#1.base| (store (select .cse0 |c_pusherThread1of1ForFork0_~q~0#1.base|) .cse1 v_ArrVal_7936)))) |c_ULTIMATE.start_main_~#q~1#1.base|) |c_ULTIMATE.start_main_~#q~1#1.offset|) 0))) is different from false [2022-11-03 03:46:49,717 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7932 (Array Int Int)) (v_ArrVal_7936 Int) (v_ArrVal_7933 (Array Int Int)) (v_ArrVal_7934 (Array Int Int))) (not (= (select (select (let ((.cse1 (+ |c_pusherThread1of1ForFork0_#in~q_#1.offset| 4))) (let ((.cse0 (let ((.cse2 (let ((.cse3 (select (select |c_#memory_$Pointer$.base| |c_pusherThread1of1ForFork0_#in~q_#1.base|) .cse1))) (store (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| .cse3) (+ (select (select |c_#memory_$Pointer$.offset| |c_pusherThread1of1ForFork0_#in~q_#1.base|) .cse1) 12)) v_ArrVal_7932) .cse3 v_ArrVal_7933)))) (store .cse2 (select (select .cse2 |c_pusherThread1of1ForFork0_#in~q_#1.base|) .cse1) v_ArrVal_7934)))) (store .cse0 |c_pusherThread1of1ForFork0_#in~q_#1.base| (store (select .cse0 |c_pusherThread1of1ForFork0_#in~q_#1.base|) .cse1 v_ArrVal_7936)))) |c_ULTIMATE.start_main_~#q~1#1.base|) |c_ULTIMATE.start_main_~#q~1#1.offset|) 0))) is different from false [2022-11-03 03:46:49,735 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7932 (Array Int Int)) (v_ArrVal_7933 (Array Int Int)) (v_ArrVal_7934 (Array Int Int))) (not (= (select (select (let ((.cse1 (+ 4 |c_ULTIMATE.start_main_~#q~1#1.offset|))) (let ((.cse0 (let ((.cse2 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~#q~1#1.base|) .cse1))) (store (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| .cse2) (+ 12 (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~#q~1#1.base|) .cse1))) v_ArrVal_7932) .cse2 v_ArrVal_7933)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~#q~1#1.base|) .cse1) v_ArrVal_7934))) |c_ULTIMATE.start_main_~#q~1#1.base|) |c_ULTIMATE.start_main_~#q~1#1.offset|) 0))) is different from false [2022-11-03 03:46:49,738 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-11-03 03:46:49,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [592076057] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:46:49,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [785917034] [2022-11-03 03:46:49,747 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-03 03:46:49,751 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 03:46:49,751 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13, 13] total 39 [2022-11-03 03:46:49,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276959860] [2022-11-03 03:46:49,751 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 03:46:49,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-11-03 03:46:49,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:46:49,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-11-03 03:46:49,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=850, Unknown=9, NotChecked=612, Total=1640 [2022-11-03 03:46:49,755 INFO L87 Difference]: Start difference. First operand 1848 states and 4167 transitions. Second operand has 41 states, 40 states have (on average 1.525) internal successors, (61), 40 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)