./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-divine/divinefifo-bug_1w1r.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_254643e4-1a9e-427f-9b39-19ec7d39f948/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_254643e4-1a9e-427f-9b39-19ec7d39f948/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_254643e4-1a9e-427f-9b39-19ec7d39f948/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_254643e4-1a9e-427f-9b39-19ec7d39f948/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-divine/divinefifo-bug_1w1r.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_254643e4-1a9e-427f-9b39-19ec7d39f948/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_254643e4-1a9e-427f-9b39-19ec7d39f948/bin/utaipan-UbGMyvGFUs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 32482febe38d61a93fd0705f3ad97c9c1ccc991b1238f75e4d1dd99bfb01c35e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:16:35,980 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:16:35,982 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:16:36,028 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:16:36,029 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:16:36,034 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:16:36,036 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:16:36,040 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:16:36,042 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:16:36,048 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:16:36,049 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:16:36,051 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:16:36,051 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:16:36,054 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:16:36,056 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:16:36,060 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:16:36,061 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:16:36,062 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:16:36,065 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:16:36,072 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:16:36,074 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:16:36,076 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:16:36,079 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:16:36,080 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:16:36,090 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:16:36,091 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:16:36,091 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:16:36,093 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:16:36,094 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:16:36,095 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:16:36,096 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:16:36,097 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:16:36,099 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:16:36,100 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:16:36,101 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:16:36,102 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:16:36,103 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:16:36,103 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:16:36,103 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:16:36,104 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:16:36,105 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:16:36,106 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_254643e4-1a9e-427f-9b39-19ec7d39f948/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-19 14:16:36,147 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:16:36,147 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:16:36,148 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:16:36,148 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:16:36,149 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:16:36,149 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:16:36,149 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:16:36,149 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 14:16:36,150 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:16:36,150 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:16:36,157 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 14:16:36,157 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 14:16:36,157 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:16:36,158 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 14:16:36,158 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 14:16:36,158 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 14:16:36,159 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:16:36,159 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 14:16:36,159 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 14:16:36,160 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 14:16:36,160 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:16:36,160 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:16:36,160 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:16:36,161 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:16:36,161 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:16:36,161 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 14:16:36,161 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:16:36,162 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:16:36,162 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:16:36,163 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:16:36,164 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:16:36,164 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:16:36,164 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:16:36,165 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:16:36,165 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:16:36,165 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 14:16:36,165 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 14:16:36,166 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:16:36,166 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:16:36,166 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:16:36,166 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_254643e4-1a9e-427f-9b39-19ec7d39f948/bin/utaipan-UbGMyvGFUs/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_254643e4-1a9e-427f-9b39-19ec7d39f948/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 32482febe38d61a93fd0705f3ad97c9c1ccc991b1238f75e4d1dd99bfb01c35e [2021-11-19 14:16:36,488 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:16:36,525 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:16:36,528 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:16:36,530 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:16:36,530 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:16:36,532 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_254643e4-1a9e-427f-9b39-19ec7d39f948/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/pthread-divine/divinefifo-bug_1w1r.i [2021-11-19 14:16:36,619 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_254643e4-1a9e-427f-9b39-19ec7d39f948/bin/utaipan-UbGMyvGFUs/data/99324ede4/363bb11832c149559b6826ac0efe2e0e/FLAGade1f90d9 [2021-11-19 14:16:37,256 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:16:37,258 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_254643e4-1a9e-427f-9b39-19ec7d39f948/sv-benchmarks/c/pthread-divine/divinefifo-bug_1w1r.i [2021-11-19 14:16:37,289 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_254643e4-1a9e-427f-9b39-19ec7d39f948/bin/utaipan-UbGMyvGFUs/data/99324ede4/363bb11832c149559b6826ac0efe2e0e/FLAGade1f90d9 [2021-11-19 14:16:37,487 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_254643e4-1a9e-427f-9b39-19ec7d39f948/bin/utaipan-UbGMyvGFUs/data/99324ede4/363bb11832c149559b6826ac0efe2e0e [2021-11-19 14:16:37,489 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:16:37,491 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:16:37,492 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:16:37,492 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:16:37,498 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:16:37,499 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:16:37" (1/1) ... [2021-11-19 14:16:37,500 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@398b058f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:16:37, skipping insertion in model container [2021-11-19 14:16:37,501 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:16:37" (1/1) ... [2021-11-19 14:16:37,508 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:16:37,561 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:16:37,729 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-11-19 14:16:38,070 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_254643e4-1a9e-427f-9b39-19ec7d39f948/sv-benchmarks/c/pthread-divine/divinefifo-bug_1w1r.i[47275,47288] [2021-11-19 14:16:38,076 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_254643e4-1a9e-427f-9b39-19ec7d39f948/sv-benchmarks/c/pthread-divine/divinefifo-bug_1w1r.i[47463,47476] [2021-11-19 14:16:38,090 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_254643e4-1a9e-427f-9b39-19ec7d39f948/sv-benchmarks/c/pthread-divine/divinefifo-bug_1w1r.i[48230,48243] [2021-11-19 14:16:38,092 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_254643e4-1a9e-427f-9b39-19ec7d39f948/sv-benchmarks/c/pthread-divine/divinefifo-bug_1w1r.i[48344,48357] [2021-11-19 14:16:38,100 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_254643e4-1a9e-427f-9b39-19ec7d39f948/sv-benchmarks/c/pthread-divine/divinefifo-bug_1w1r.i[48816,48829] [2021-11-19 14:16:38,101 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_254643e4-1a9e-427f-9b39-19ec7d39f948/sv-benchmarks/c/pthread-divine/divinefifo-bug_1w1r.i[48872,48885] [2021-11-19 14:16:38,109 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_254643e4-1a9e-427f-9b39-19ec7d39f948/sv-benchmarks/c/pthread-divine/divinefifo-bug_1w1r.i[49384,49397] [2021-11-19 14:16:38,110 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_254643e4-1a9e-427f-9b39-19ec7d39f948/sv-benchmarks/c/pthread-divine/divinefifo-bug_1w1r.i[49443,49456] [2021-11-19 14:16:38,112 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_254643e4-1a9e-427f-9b39-19ec7d39f948/sv-benchmarks/c/pthread-divine/divinefifo-bug_1w1r.i[49522,49535] [2021-11-19 14:16:38,113 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:16:38,122 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 14:16:38,135 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-11-19 14:16:38,194 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_254643e4-1a9e-427f-9b39-19ec7d39f948/sv-benchmarks/c/pthread-divine/divinefifo-bug_1w1r.i[47275,47288] [2021-11-19 14:16:38,196 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_254643e4-1a9e-427f-9b39-19ec7d39f948/sv-benchmarks/c/pthread-divine/divinefifo-bug_1w1r.i[47463,47476] [2021-11-19 14:16:38,203 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_254643e4-1a9e-427f-9b39-19ec7d39f948/sv-benchmarks/c/pthread-divine/divinefifo-bug_1w1r.i[48230,48243] [2021-11-19 14:16:38,204 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_254643e4-1a9e-427f-9b39-19ec7d39f948/sv-benchmarks/c/pthread-divine/divinefifo-bug_1w1r.i[48344,48357] [2021-11-19 14:16:38,208 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_254643e4-1a9e-427f-9b39-19ec7d39f948/sv-benchmarks/c/pthread-divine/divinefifo-bug_1w1r.i[48816,48829] [2021-11-19 14:16:38,209 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_254643e4-1a9e-427f-9b39-19ec7d39f948/sv-benchmarks/c/pthread-divine/divinefifo-bug_1w1r.i[48872,48885] [2021-11-19 14:16:38,214 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_254643e4-1a9e-427f-9b39-19ec7d39f948/sv-benchmarks/c/pthread-divine/divinefifo-bug_1w1r.i[49384,49397] [2021-11-19 14:16:38,223 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_254643e4-1a9e-427f-9b39-19ec7d39f948/sv-benchmarks/c/pthread-divine/divinefifo-bug_1w1r.i[49443,49456] [2021-11-19 14:16:38,224 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_254643e4-1a9e-427f-9b39-19ec7d39f948/sv-benchmarks/c/pthread-divine/divinefifo-bug_1w1r.i[49522,49535] [2021-11-19 14:16:38,225 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:16:38,290 INFO L208 MainTranslator]: Completed translation [2021-11-19 14:16:38,291 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:16:38 WrapperNode [2021-11-19 14:16:38,291 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:16:38,292 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 14:16:38,293 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 14:16:38,293 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 14:16:38,301 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:16:38" (1/1) ... [2021-11-19 14:16:38,333 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:16:38" (1/1) ... [2021-11-19 14:16:38,376 INFO L137 Inliner]: procedures = 278, calls = 103, calls flagged for inlining = 18, calls inlined = 18, statements flattened = 416 [2021-11-19 14:16:38,376 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 14:16:38,377 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 14:16:38,377 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 14:16:38,377 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 14:16:38,386 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:16:38" (1/1) ... [2021-11-19 14:16:38,387 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:16:38" (1/1) ... [2021-11-19 14:16:38,395 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:16:38" (1/1) ... [2021-11-19 14:16:38,395 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:16:38" (1/1) ... [2021-11-19 14:16:38,421 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:16:38" (1/1) ... [2021-11-19 14:16:38,427 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:16:38" (1/1) ... [2021-11-19 14:16:38,430 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:16:38" (1/1) ... [2021-11-19 14:16:38,437 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 14:16:38,438 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 14:16:38,438 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 14:16:38,439 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 14:16:38,440 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:16:38" (1/1) ... [2021-11-19 14:16:38,447 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:16:38,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_254643e4-1a9e-427f-9b39-19ec7d39f948/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:16:38,491 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_254643e4-1a9e-427f-9b39-19ec7d39f948/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 14:16:38,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_254643e4-1a9e-427f-9b39-19ec7d39f948/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 14:16:38,534 INFO L130 BoogieDeclarations]: Found specification of procedure pusher [2021-11-19 14:16:38,534 INFO L138 BoogieDeclarations]: Found implementation of procedure pusher [2021-11-19 14:16:38,534 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 14:16:38,535 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 14:16:38,535 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 14:16:38,535 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-19 14:16:38,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-19 14:16:38,535 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 14:16:38,535 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 14:16:38,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 14:16:38,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-19 14:16:38,536 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 14:16:38,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 14:16:38,538 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-19 14:16:38,682 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 14:16:38,683 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 14:16:39,494 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 14:16:39,516 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 14:16:39,517 INFO L301 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-19 14:16:39,520 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:16:39 BoogieIcfgContainer [2021-11-19 14:16:39,520 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 14:16:39,522 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 14:16:39,522 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 14:16:39,526 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 14:16:39,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 02:16:37" (1/3) ... [2021-11-19 14:16:39,528 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11772ba3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:16:39, skipping insertion in model container [2021-11-19 14:16:39,528 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:16:38" (2/3) ... [2021-11-19 14:16:39,529 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11772ba3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:16:39, skipping insertion in model container [2021-11-19 14:16:39,529 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:16:39" (3/3) ... [2021-11-19 14:16:39,530 INFO L111 eAbstractionObserver]: Analyzing ICFG divinefifo-bug_1w1r.i [2021-11-19 14:16:39,540 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-19 14:16:39,540 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 14:16:39,540 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2021-11-19 14:16:39,541 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-19 14:16:39,610 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_#in~q_#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,611 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_#in~q_#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,611 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~q_#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,611 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~q_#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,612 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_#in~q_#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,612 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_#in~q_#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,612 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~q_#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,612 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~q_#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,613 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~q_#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,613 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~q_#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,613 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~q~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,613 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~q~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,614 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~q_#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,614 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~q_#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,614 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~q~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,614 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~q~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,614 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,615 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,615 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,615 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,615 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,616 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,616 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,616 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,617 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,617 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,617 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~q~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,617 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~q~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,618 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,618 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#in~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,618 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#in~x#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,618 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#in~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,618 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~q~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,618 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~q~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,619 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,619 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#in~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,619 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#in~x#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,619 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#in~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,620 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem26#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,620 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,620 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem20#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,620 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem25#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,620 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~pre28#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,620 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem20#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,621 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem30#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,621 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,622 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~malloc23#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,622 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~x#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,622 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem22#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,622 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,623 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem27#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,623 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem27#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,623 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem21#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,623 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~pre28#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,623 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem21#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,624 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~ret24#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,624 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,625 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem30#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,628 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~ret24#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,628 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem25#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,629 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem29#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,629 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem22#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,629 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem29#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,630 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~malloc23#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,630 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem26#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,630 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem26#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,630 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,636 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem20#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,636 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem25#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,637 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~pre28#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,637 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem20#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,637 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem30#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,637 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,637 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~malloc23#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,637 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~x#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,637 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem22#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,637 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,637 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem27#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,637 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem27#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,637 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem21#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,638 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~pre28#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,638 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem21#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,638 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~ret24#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,638 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,638 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem30#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,638 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~ret24#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,638 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem25#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,638 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem29#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,639 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem22#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,639 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem29#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,639 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~malloc23#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,639 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem26#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,639 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#in~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,639 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#in~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,639 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,640 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,640 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#in~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,640 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#in~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,641 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,641 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,641 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#in~x#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,641 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~x#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,641 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#in~x#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,642 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~x#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,642 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,642 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,642 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,642 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,642 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,642 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,643 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem20#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,643 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem20#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,643 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,643 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,643 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem20#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,643 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem20#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,644 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem20#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,644 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem20#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,644 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem22#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,644 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem22#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,644 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem20#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,644 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem20#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,644 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem22#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,645 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem22#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,645 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,645 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,646 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem21#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,646 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem21#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,646 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,646 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,646 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem21#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,649 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem21#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,649 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem21#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,649 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem22#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,649 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem22#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,649 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem21#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,649 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem21#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,650 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem22#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,650 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem22#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,650 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem21#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,650 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem21#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,650 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem22#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,650 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem22#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,650 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem21#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,651 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem21#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,651 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem22#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,651 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem22#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,651 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem21#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,651 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem20#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,651 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem20#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,652 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem20#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,652 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem20#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,652 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem20#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,652 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem20#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,652 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem20#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,652 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem20#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,652 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem22#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,653 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem22#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,653 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem22#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,653 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem22#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,653 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem22#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,653 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem22#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,653 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem22#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,653 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem22#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,654 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem21#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,654 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem21#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,654 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem21#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,654 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem21#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,654 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem21#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,654 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem21#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,654 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem21#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,655 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem21#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,655 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~malloc23#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,655 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~malloc23#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,655 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~malloc23#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,655 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~malloc23#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,656 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,656 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,656 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem25#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,656 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem25#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,656 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,656 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,656 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem25#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,657 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem25#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,658 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem25#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,662 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem25#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,663 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,663 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,663 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem25#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,663 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem25#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,663 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,663 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,663 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~malloc23#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,664 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~malloc23#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,665 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_#in~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,667 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_#in~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,667 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~malloc23#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,667 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~malloc23#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,667 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_#in~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,668 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_#in~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,668 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem25#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,668 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem25#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,668 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem25#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,668 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem25#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,668 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,668 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,669 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,669 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,669 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,669 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,669 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem26#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,669 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem26#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,669 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,670 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,670 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem26#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,670 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem26#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,670 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,670 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,670 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,670 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,671 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem26#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,671 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~x#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,671 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem26#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,671 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem26#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,671 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~x#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,671 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem26#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,671 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_#in~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,672 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_#in~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,672 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,672 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,672 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_#in~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,672 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_#in~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,672 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,673 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,673 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem26#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,680 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem26#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,681 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem26#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,681 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem26#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,681 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,681 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,681 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,681 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,682 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,682 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,682 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem27#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,682 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem27#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,682 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,682 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,682 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem27#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,683 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem27#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,683 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,683 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,683 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,683 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,683 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem27#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,684 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem27#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,684 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~pre28#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,684 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~pre28#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,685 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem27#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,685 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem27#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,685 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~pre28#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,685 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~pre28#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,685 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,685 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,686 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,686 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,686 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem27#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,686 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,686 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,686 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem27#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,686 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem27#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,687 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,687 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,687 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem27#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,687 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,687 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,687 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,687 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,688 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,688 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,688 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,688 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,688 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem27#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,688 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem27#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,688 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem27#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,688 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem27#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,689 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,689 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,689 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~ret24#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,689 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~ret24#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,689 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,689 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,689 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~ret24#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,689 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~ret24#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,690 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~pre28#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,690 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~pre28#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,690 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~pre28#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,690 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~pre28#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,690 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,690 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,690 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem29#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,691 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem29#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,691 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,691 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,691 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem29#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,691 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem29#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,691 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~ret24#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,691 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~ret24#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,692 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,692 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,692 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~ret24#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,692 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~ret24#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,692 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,692 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,692 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem29#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,694 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem29#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,694 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,694 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,694 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem29#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,694 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem29#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,694 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,694 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,695 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem29#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,695 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem29#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,695 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,695 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,695 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem29#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,695 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem29#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,695 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,695 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,696 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~malloc23#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,696 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~malloc23#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,696 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~malloc23#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,696 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~malloc23#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,696 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem29#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,696 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem29#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,696 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem29#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,696 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem29#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,697 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem29#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,697 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem29#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,697 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem29#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,697 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem29#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,697 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~ret24#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,697 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~ret24#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,697 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~ret24#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,698 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~ret24#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,698 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,698 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,698 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem30#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,698 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem30#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,698 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,698 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,698 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem30#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,699 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem30#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,699 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem30#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,699 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,699 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,699 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem30#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,699 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem30#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,699 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,700 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,700 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem30#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,700 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,700 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_#t~pre63#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,700 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,700 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_#t~pre63#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,700 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem30#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,701 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem30#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,701 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem30#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,701 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem30#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,701 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,701 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,701 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,701 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,701 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,702 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,702 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,702 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,702 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,702 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,702 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,702 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,704 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_#t~pre63#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,704 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_#t~pre63#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,710 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem26#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,711 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem29#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,711 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,711 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem25#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,711 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem20#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,711 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_#t~pre63#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,712 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem22#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,712 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,712 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_#in~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,712 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem27#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,712 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#in~x#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,712 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~q~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,712 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,713 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem22#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,713 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,713 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~malloc23#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,713 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,713 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~x#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,713 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem30#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,713 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,713 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem27#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,714 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#in~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,714 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,714 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,714 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~q_#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,714 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem20#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,714 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~ret24#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,714 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,715 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem25#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,715 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~pre28#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,715 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem30#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,715 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem21#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,715 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~ret24#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,716 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem21#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,716 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,716 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,716 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~pre28#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,716 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem26#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,716 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#in~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,716 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~q_#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,717 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~malloc23#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,717 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_#in~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,717 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem29#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,717 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~q~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:16:39,721 INFO L148 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2021-11-19 14:16:39,785 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 14:16:39,796 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-19 14:16:39,796 INFO L340 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2021-11-19 14:16:39,850 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-11-19 14:16:39,861 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 478 places, 507 transitions, 1022 flow [2021-11-19 14:16:39,863 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 478 places, 507 transitions, 1022 flow [2021-11-19 14:16:39,865 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 478 places, 507 transitions, 1022 flow [2021-11-19 14:16:40,056 INFO L129 PetriNetUnfolder]: 33/506 cut-off events. [2021-11-19 14:16:40,056 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-11-19 14:16:40,066 INFO L84 FinitePrefix]: Finished finitePrefix Result has 511 conditions, 506 events. 33/506 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1168 event pairs, 0 based on Foata normal form. 0/462 useless extension candidates. Maximal degree in co-relation 352. Up to 3 conditions per place. [2021-11-19 14:16:40,097 INFO L116 LiptonReduction]: Number of co-enabled transitions 36864 [2021-11-19 14:17:14,836 WARN L227 SmtUtils]: Spent 5.98s on a formula simplification. DAG size of input: 235 DAG size of output: 220 (called from [L 231] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2021-11-19 14:17:23,085 WARN L227 SmtUtils]: Spent 5.68s on a formula simplification. DAG size of input: 241 DAG size of output: 226 (called from [L 231] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2021-11-19 14:17:25,972 INFO L131 LiptonReduction]: Checked pairs total: 142414 [2021-11-19 14:17:25,972 INFO L133 LiptonReduction]: Total number of compositions: 546 [2021-11-19 14:17:25,994 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 106 places, 123 transitions, 254 flow [2021-11-19 14:17:26,086 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1451 states, 1440 states have (on average 2.327777777777778) internal successors, (3352), 1450 states have internal predecessors, (3352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:17:26,092 INFO L276 IsEmpty]: Start isEmpty. Operand has 1451 states, 1440 states have (on average 2.327777777777778) internal successors, (3352), 1450 states have internal predecessors, (3352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:17:26,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2021-11-19 14:17:26,097 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:17:26,097 INFO L514 BasicCegarLoop]: trace histogram [1] [2021-11-19 14:17:26,098 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-19 14:17:26,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:17:26,103 INFO L85 PathProgramCache]: Analyzing trace with hash 1791, now seen corresponding path program 1 times [2021-11-19 14:17:26,113 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:17:26,114 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959027722] [2021-11-19 14:17:26,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:17:26,116 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:17:26,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:17:26,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:17:26,260 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:17:26,261 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959027722] [2021-11-19 14:17:26,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959027722] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:17:26,262 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:17:26,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2021-11-19 14:17:26,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124967359] [2021-11-19 14:17:26,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:17:26,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-19 14:17:26,269 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:17:26,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-19 14:17:26,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 14:17:26,303 INFO L87 Difference]: Start difference. First operand has 1451 states, 1440 states have (on average 2.327777777777778) internal successors, (3352), 1450 states have internal predecessors, (3352), 0 states have call successors, (0), 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) [2021-11-19 14:17:26,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:17:26,583 INFO L93 Difference]: Finished difference Result 1450 states and 3256 transitions. [2021-11-19 14:17:26,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 14:17:26,585 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 [2021-11-19 14:17:26,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:17:26,617 INFO L225 Difference]: With dead ends: 1450 [2021-11-19 14:17:26,618 INFO L226 Difference]: Without dead ends: 1450 [2021-11-19 14:17:26,618 INFO L932 BasicCegarLoop]: 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 [2021-11-19 14:17:26,627 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:17:26,629 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 23 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 14:17:26,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1450 states. [2021-11-19 14:17:26,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1450 to 1450. [2021-11-19 14:17:26,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1450 states, 1440 states have (on average 2.261111111111111) internal successors, (3256), 1449 states have internal predecessors, (3256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:17:26,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1450 states to 1450 states and 3256 transitions. [2021-11-19 14:17:26,761 INFO L78 Accepts]: Start accepts. Automaton has 1450 states and 3256 transitions. Word has length 1 [2021-11-19 14:17:26,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:17:26,761 INFO L470 AbstractCegarLoop]: Abstraction has 1450 states and 3256 transitions. [2021-11-19 14:17:26,761 INFO L471 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) [2021-11-19 14:17:26,762 INFO L276 IsEmpty]: Start isEmpty. Operand 1450 states and 3256 transitions. [2021-11-19 14:17:26,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-19 14:17:26,763 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:17:26,763 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-19 14:17:26,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-19 14:17:26,763 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-19 14:17:26,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:17:26,766 INFO L85 PathProgramCache]: Analyzing trace with hash 946258214, now seen corresponding path program 1 times [2021-11-19 14:17:26,766 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:17:26,767 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659703757] [2021-11-19 14:17:26,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:17:26,767 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:17:26,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:17:26,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:17:26,953 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:17:26,953 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659703757] [2021-11-19 14:17:26,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659703757] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:17:26,953 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:17:26,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 14:17:26,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188500867] [2021-11-19 14:17:26,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:17:26,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:17:26,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:17:26,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:17:26,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:17:26,956 INFO L87 Difference]: Start difference. First operand 1450 states and 3256 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) [2021-11-19 14:17:27,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:17:27,302 INFO L93 Difference]: Finished difference Result 2723 states and 6126 transitions. [2021-11-19 14:17:27,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:17:27,303 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 [2021-11-19 14:17:27,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:17:27,323 INFO L225 Difference]: With dead ends: 2723 [2021-11-19 14:17:27,323 INFO L226 Difference]: Without dead ends: 2723 [2021-11-19 14:17:27,324 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:17:27,325 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 97 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:17:27,326 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 48 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 14:17:27,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2723 states. [2021-11-19 14:17:27,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2723 to 1469. [2021-11-19 14:17:27,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1469 states, 1459 states have (on average 2.259081562714188) internal successors, (3296), 1468 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:17:27,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1469 states to 1469 states and 3296 transitions. [2021-11-19 14:17:27,443 INFO L78 Accepts]: Start accepts. Automaton has 1469 states and 3296 transitions. Word has length 6 [2021-11-19 14:17:27,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:17:27,443 INFO L470 AbstractCegarLoop]: Abstraction has 1469 states and 3296 transitions. [2021-11-19 14:17:27,443 INFO L471 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) [2021-11-19 14:17:27,443 INFO L276 IsEmpty]: Start isEmpty. Operand 1469 states and 3296 transitions. [2021-11-19 14:17:27,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-19 14:17:27,444 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:17:27,444 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:17:27,445 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-19 14:17:27,445 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-19 14:17:27,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:17:27,447 INFO L85 PathProgramCache]: Analyzing trace with hash -729302322, now seen corresponding path program 1 times [2021-11-19 14:17:27,447 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:17:27,447 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418093103] [2021-11-19 14:17:27,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:17:27,447 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:17:27,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:17:27,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:17:27,527 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:17:27,527 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418093103] [2021-11-19 14:17:27,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418093103] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:17:27,528 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:17:27,528 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 14:17:27,528 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640444945] [2021-11-19 14:17:27,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:17:27,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:17:27,529 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:17:27,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:17:27,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:17:27,529 INFO L87 Difference]: Start difference. First operand 1469 states and 3296 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) [2021-11-19 14:17:27,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:17:27,752 INFO L93 Difference]: Finished difference Result 1469 states and 3277 transitions. [2021-11-19 14:17:27,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:17:27,752 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 [2021-11-19 14:17:27,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:17:27,763 INFO L225 Difference]: With dead ends: 1469 [2021-11-19 14:17:27,763 INFO L226 Difference]: Without dead ends: 1469 [2021-11-19 14:17:27,763 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:17:27,765 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 110 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:17:27,765 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 27 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 14:17:27,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1469 states. [2021-11-19 14:17:27,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1469 to 1469. [2021-11-19 14:17:27,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1469 states, 1459 states have (on average 2.246058944482522) internal successors, (3277), 1468 states have internal predecessors, (3277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:17:27,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1469 states to 1469 states and 3277 transitions. [2021-11-19 14:17:27,815 INFO L78 Accepts]: Start accepts. Automaton has 1469 states and 3277 transitions. Word has length 7 [2021-11-19 14:17:27,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:17:27,815 INFO L470 AbstractCegarLoop]: Abstraction has 1469 states and 3277 transitions. [2021-11-19 14:17:27,815 INFO L471 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) [2021-11-19 14:17:27,816 INFO L276 IsEmpty]: Start isEmpty. Operand 1469 states and 3277 transitions. [2021-11-19 14:17:27,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-19 14:17:27,816 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:17:27,817 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:17:27,817 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-19 14:17:27,817 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-19 14:17:27,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:17:27,818 INFO L85 PathProgramCache]: Analyzing trace with hash -1122511823, now seen corresponding path program 1 times [2021-11-19 14:17:27,818 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:17:27,818 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158795365] [2021-11-19 14:17:27,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:17:27,818 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:17:27,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:17:27,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:17:27,931 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:17:27,932 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158795365] [2021-11-19 14:17:27,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158795365] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:17:27,933 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:17:27,933 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-19 14:17:27,933 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840101685] [2021-11-19 14:17:27,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:17:27,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 14:17:27,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:17:27,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 14:17:27,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-19 14:17:27,936 INFO L87 Difference]: Start difference. First operand 1469 states and 3277 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) [2021-11-19 14:17:28,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:17:28,627 INFO L93 Difference]: Finished difference Result 1855 states and 4138 transitions. [2021-11-19 14:17:28,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 14:17:28,628 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 [2021-11-19 14:17:28,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:17:28,642 INFO L225 Difference]: With dead ends: 1855 [2021-11-19 14:17:28,642 INFO L226 Difference]: Without dead ends: 1855 [2021-11-19 14:17:28,642 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-19 14:17:28,643 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 127 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 691 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 691 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-19 14:17:28,644 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [127 Valid, 25 Invalid, 697 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 691 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-19 14:17:28,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1855 states. [2021-11-19 14:17:28,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1855 to 1576. [2021-11-19 14:17:28,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1576 states, 1566 states have (on average 2.2490421455938696) internal successors, (3522), 1575 states have internal predecessors, (3522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:17:28,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 3522 transitions. [2021-11-19 14:17:28,699 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 3522 transitions. Word has length 8 [2021-11-19 14:17:28,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:17:28,700 INFO L470 AbstractCegarLoop]: Abstraction has 1576 states and 3522 transitions. [2021-11-19 14:17:28,700 INFO L471 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) [2021-11-19 14:17:28,700 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 3522 transitions. [2021-11-19 14:17:28,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-19 14:17:28,702 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:17:28,702 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:17:28,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-19 14:17:28,703 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-19 14:17:28,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:17:28,703 INFO L85 PathProgramCache]: Analyzing trace with hash -696730677, now seen corresponding path program 1 times [2021-11-19 14:17:28,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:17:28,703 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106881029] [2021-11-19 14:17:28,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:17:28,704 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:17:28,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:17:28,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:17:28,857 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:17:28,858 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106881029] [2021-11-19 14:17:28,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106881029] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:17:28,858 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:17:28,858 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-19 14:17:28,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753794111] [2021-11-19 14:17:28,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:17:28,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:17:28,859 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:17:28,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:17:28,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:17:28,859 INFO L87 Difference]: Start difference. First operand 1576 states and 3522 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) [2021-11-19 14:17:29,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:17:29,154 INFO L93 Difference]: Finished difference Result 2584 states and 5768 transitions. [2021-11-19 14:17:29,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:17:29,155 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 [2021-11-19 14:17:29,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:17:29,174 INFO L225 Difference]: With dead ends: 2584 [2021-11-19 14:17:29,174 INFO L226 Difference]: Without dead ends: 2584 [2021-11-19 14:17:29,174 INFO L932 BasicCegarLoop]: 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 [2021-11-19 14:17:29,175 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 73 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:17:29,176 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 48 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 14:17:29,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2584 states. [2021-11-19 14:17:29,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2584 to 1633. [2021-11-19 14:17:29,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1633 states, 1623 states have (on average 2.243992606284658) internal successors, (3642), 1632 states have internal predecessors, (3642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:17:29,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1633 states to 1633 states and 3642 transitions. [2021-11-19 14:17:29,239 INFO L78 Accepts]: Start accepts. Automaton has 1633 states and 3642 transitions. Word has length 10 [2021-11-19 14:17:29,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:17:29,240 INFO L470 AbstractCegarLoop]: Abstraction has 1633 states and 3642 transitions. [2021-11-19 14:17:29,240 INFO L471 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) [2021-11-19 14:17:29,240 INFO L276 IsEmpty]: Start isEmpty. Operand 1633 states and 3642 transitions. [2021-11-19 14:17:29,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-19 14:17:29,243 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:17:29,243 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:17:29,243 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-19 14:17:29,244 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-19 14:17:29,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:17:29,244 INFO L85 PathProgramCache]: Analyzing trace with hash 344091785, now seen corresponding path program 1 times [2021-11-19 14:17:29,244 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:17:29,245 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085913939] [2021-11-19 14:17:29,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:17:29,245 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:17:29,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:17:29,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:17:29,444 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:17:29,444 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085913939] [2021-11-19 14:17:29,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085913939] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:17:29,444 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:17:29,444 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-19 14:17:29,444 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134707677] [2021-11-19 14:17:29,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:17:29,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 14:17:29,445 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:17:29,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 14:17:29,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-11-19 14:17:29,445 INFO L87 Difference]: Start difference. First operand 1633 states and 3642 transitions. Second operand has 11 states, 10 states have (on average 1.4) internal successors, (14), 10 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) [2021-11-19 14:17:30,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:17:30,952 INFO L93 Difference]: Finished difference Result 2374 states and 5281 transitions. [2021-11-19 14:17:30,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 14:17:30,953 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.4) internal successors, (14), 10 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 [2021-11-19 14:17:30,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:17:30,971 INFO L225 Difference]: With dead ends: 2374 [2021-11-19 14:17:30,971 INFO L226 Difference]: Without dead ends: 2374 [2021-11-19 14:17:30,971 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=146, Invalid=274, Unknown=0, NotChecked=0, Total=420 [2021-11-19 14:17:30,972 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 387 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 1313 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 387 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 1340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:17:30,973 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [387 Valid, 24 Invalid, 1340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1313 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-19 14:17:30,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2374 states. [2021-11-19 14:17:31,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2374 to 1647. [2021-11-19 14:17:31,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1647 states, 1637 states have (on average 2.244349419670128) internal successors, (3674), 1646 states have internal predecessors, (3674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:17:31,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1647 states to 1647 states and 3674 transitions. [2021-11-19 14:17:31,037 INFO L78 Accepts]: Start accepts. Automaton has 1647 states and 3674 transitions. Word has length 14 [2021-11-19 14:17:31,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:17:31,038 INFO L470 AbstractCegarLoop]: Abstraction has 1647 states and 3674 transitions. [2021-11-19 14:17:31,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.4) internal successors, (14), 10 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) [2021-11-19 14:17:31,039 INFO L276 IsEmpty]: Start isEmpty. Operand 1647 states and 3674 transitions. [2021-11-19 14:17:31,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-19 14:17:31,040 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:17:31,041 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:17:31,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-19 14:17:31,041 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-19 14:17:31,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:17:31,042 INFO L85 PathProgramCache]: Analyzing trace with hash 2033711913, now seen corresponding path program 1 times [2021-11-19 14:17:31,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:17:31,042 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999279622] [2021-11-19 14:17:31,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:17:31,042 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:17:31,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:17:31,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:17:31,194 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:17:31,194 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999279622] [2021-11-19 14:17:31,194 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999279622] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:17:31,194 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:17:31,194 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-19 14:17:31,194 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777735004] [2021-11-19 14:17:31,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:17:31,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 14:17:31,195 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:17:31,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 14:17:31,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-19 14:17:31,196 INFO L87 Difference]: Start difference. First operand 1647 states and 3674 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 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) [2021-11-19 14:17:32,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:17:32,144 INFO L93 Difference]: Finished difference Result 2628 states and 5857 transitions. [2021-11-19 14:17:32,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 14:17:32,145 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 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 [2021-11-19 14:17:32,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:17:32,163 INFO L225 Difference]: With dead ends: 2628 [2021-11-19 14:17:32,163 INFO L226 Difference]: Without dead ends: 2591 [2021-11-19 14:17:32,163 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:17:32,164 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 120 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 916 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 916 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-19 14:17:32,165 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [120 Valid, 27 Invalid, 925 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 916 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-19 14:17:32,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2591 states. [2021-11-19 14:17:32,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2591 to 1932. [2021-11-19 14:17:32,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1932 states, 1922 states have (on average 2.27471383975026) internal successors, (4372), 1931 states have internal predecessors, (4372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:17:32,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1932 states to 1932 states and 4372 transitions. [2021-11-19 14:17:32,232 INFO L78 Accepts]: Start accepts. Automaton has 1932 states and 4372 transitions. Word has length 14 [2021-11-19 14:17:32,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:17:32,232 INFO L470 AbstractCegarLoop]: Abstraction has 1932 states and 4372 transitions. [2021-11-19 14:17:32,233 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 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) [2021-11-19 14:17:32,233 INFO L276 IsEmpty]: Start isEmpty. Operand 1932 states and 4372 transitions. [2021-11-19 14:17:32,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-19 14:17:32,234 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:17:32,234 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:17:32,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-19 14:17:32,235 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-19 14:17:32,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:17:32,235 INFO L85 PathProgramCache]: Analyzing trace with hash -1608731715, now seen corresponding path program 2 times [2021-11-19 14:17:32,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:17:32,235 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526496435] [2021-11-19 14:17:32,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:17:32,236 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:17:32,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:17:32,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:17:32,405 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:17:32,405 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526496435] [2021-11-19 14:17:32,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526496435] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:17:32,405 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:17:32,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-19 14:17:32,405 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935489545] [2021-11-19 14:17:32,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:17:32,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 14:17:32,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:17:32,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 14:17:32,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-11-19 14:17:32,407 INFO L87 Difference]: Start difference. First operand 1932 states and 4372 transitions. Second operand has 11 states, 10 states have (on average 1.4) internal successors, (14), 10 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) [2021-11-19 14:17:34,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:17:34,215 INFO L93 Difference]: Finished difference Result 2390 states and 5367 transitions. [2021-11-19 14:17:34,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-19 14:17:34,216 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.4) internal successors, (14), 10 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 [2021-11-19 14:17:34,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:17:34,237 INFO L225 Difference]: With dead ends: 2390 [2021-11-19 14:17:34,237 INFO L226 Difference]: Without dead ends: 2390 [2021-11-19 14:17:34,238 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=280, Invalid=590, Unknown=0, NotChecked=0, Total=870 [2021-11-19 14:17:34,238 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 470 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 1888 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 470 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 1916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1888 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:17:34,239 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [470 Valid, 22 Invalid, 1916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1888 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-19 14:17:34,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2390 states. [2021-11-19 14:17:34,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2390 to 1920. [2021-11-19 14:17:34,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1920 states, 1910 states have (on average 2.2743455497382197) internal successors, (4344), 1919 states have internal predecessors, (4344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:17:34,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1920 states to 1920 states and 4344 transitions. [2021-11-19 14:17:34,305 INFO L78 Accepts]: Start accepts. Automaton has 1920 states and 4344 transitions. Word has length 14 [2021-11-19 14:17:34,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:17:34,306 INFO L470 AbstractCegarLoop]: Abstraction has 1920 states and 4344 transitions. [2021-11-19 14:17:34,306 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.4) internal successors, (14), 10 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) [2021-11-19 14:17:34,306 INFO L276 IsEmpty]: Start isEmpty. Operand 1920 states and 4344 transitions. [2021-11-19 14:17:34,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-19 14:17:34,307 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:17:34,308 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:17:34,308 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-19 14:17:34,308 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-19 14:17:34,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:17:34,309 INFO L85 PathProgramCache]: Analyzing trace with hash 2076579246, now seen corresponding path program 1 times [2021-11-19 14:17:34,309 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:17:34,309 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990256606] [2021-11-19 14:17:34,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:17:34,309 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:17:34,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:17:34,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:17:34,497 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:17:34,497 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990256606] [2021-11-19 14:17:34,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990256606] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:17:34,498 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:17:34,498 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-19 14:17:34,498 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939948199] [2021-11-19 14:17:34,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:17:34,499 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-19 14:17:34,499 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:17:34,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-19 14:17:34,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-11-19 14:17:34,500 INFO L87 Difference]: Start difference. First operand 1920 states and 4344 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) [2021-11-19 14:17:36,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:17:36,256 INFO L93 Difference]: Finished difference Result 2891 states and 6497 transitions. [2021-11-19 14:17:36,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-19 14:17:36,257 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 [2021-11-19 14:17:36,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:17:36,276 INFO L225 Difference]: With dead ends: 2891 [2021-11-19 14:17:36,276 INFO L226 Difference]: Without dead ends: 2891 [2021-11-19 14:17:36,276 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=216, Invalid=434, Unknown=0, NotChecked=0, Total=650 [2021-11-19 14:17:36,277 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 476 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 1669 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 476 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 1715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:17:36,277 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [476 Valid, 24 Invalid, 1715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1669 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-19 14:17:36,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2891 states. [2021-11-19 14:17:36,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2891 to 1965. [2021-11-19 14:17:36,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1965 states, 1955 states have (on average 2.2751918158567777) internal successors, (4448), 1964 states have internal predecessors, (4448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:17:36,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1965 states to 1965 states and 4448 transitions. [2021-11-19 14:17:36,348 INFO L78 Accepts]: Start accepts. Automaton has 1965 states and 4448 transitions. Word has length 15 [2021-11-19 14:17:36,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:17:36,348 INFO L470 AbstractCegarLoop]: Abstraction has 1965 states and 4448 transitions. [2021-11-19 14:17:36,348 INFO L471 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) [2021-11-19 14:17:36,348 INFO L276 IsEmpty]: Start isEmpty. Operand 1965 states and 4448 transitions. [2021-11-19 14:17:36,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-19 14:17:36,350 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:17:36,350 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:17:36,350 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-19 14:17:36,350 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-19 14:17:36,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:17:36,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1137616898, now seen corresponding path program 1 times [2021-11-19 14:17:36,351 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:17:36,351 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50435346] [2021-11-19 14:17:36,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:17:36,352 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:17:36,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:17:36,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:17:36,514 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:17:36,514 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50435346] [2021-11-19 14:17:36,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50435346] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:17:36,514 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:17:36,515 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 14:17:36,515 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743322669] [2021-11-19 14:17:36,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:17:36,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:17:36,515 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:17:36,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:17:36,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:17:36,516 INFO L87 Difference]: Start difference. First operand 1965 states and 4448 transitions. Second operand has 8 states, 8 states have (on average 1.875) internal successors, (15), 7 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) [2021-11-19 14:17:37,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:17:37,620 INFO L93 Difference]: Finished difference Result 2783 states and 6259 transitions. [2021-11-19 14:17:37,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 14:17:37,621 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 7 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 [2021-11-19 14:17:37,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:17:37,631 INFO L225 Difference]: With dead ends: 2783 [2021-11-19 14:17:37,631 INFO L226 Difference]: Without dead ends: 2783 [2021-11-19 14:17:37,631 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-11-19 14:17:37,633 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 214 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 1062 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 1067 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1062 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:17:37,634 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [214 Valid, 12 Invalid, 1067 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1062 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-19 14:17:37,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2783 states. [2021-11-19 14:17:37,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2783 to 2121. [2021-11-19 14:17:37,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2121 states, 2111 states have (on average 2.2837517764092845) internal successors, (4821), 2120 states have internal predecessors, (4821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:17:37,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2121 states to 2121 states and 4821 transitions. [2021-11-19 14:17:37,717 INFO L78 Accepts]: Start accepts. Automaton has 2121 states and 4821 transitions. Word has length 15 [2021-11-19 14:17:37,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:17:37,717 INFO L470 AbstractCegarLoop]: Abstraction has 2121 states and 4821 transitions. [2021-11-19 14:17:37,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 7 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) [2021-11-19 14:17:37,718 INFO L276 IsEmpty]: Start isEmpty. Operand 2121 states and 4821 transitions. [2021-11-19 14:17:37,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-19 14:17:37,720 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:17:37,720 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:17:37,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-19 14:17:37,721 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-19 14:17:37,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:17:37,726 INFO L85 PathProgramCache]: Analyzing trace with hash -1658931202, now seen corresponding path program 2 times [2021-11-19 14:17:37,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:17:37,726 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092253485] [2021-11-19 14:17:37,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:17:37,727 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:17:37,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:17:38,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:17:38,151 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:17:38,151 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092253485] [2021-11-19 14:17:38,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092253485] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:17:38,151 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:17:38,151 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-19 14:17:38,151 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040143338] [2021-11-19 14:17:38,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:17:38,152 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-19 14:17:38,152 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:17:38,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-19 14:17:38,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-11-19 14:17:38,153 INFO L87 Difference]: Start difference. First operand 2121 states and 4821 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) [2021-11-19 14:17:39,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:17:39,792 INFO L93 Difference]: Finished difference Result 2704 states and 6031 transitions. [2021-11-19 14:17:39,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-19 14:17:39,792 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 [2021-11-19 14:17:39,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:17:39,799 INFO L225 Difference]: With dead ends: 2704 [2021-11-19 14:17:39,800 INFO L226 Difference]: Without dead ends: 2704 [2021-11-19 14:17:39,800 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=150, Invalid=356, Unknown=0, NotChecked=0, Total=506 [2021-11-19 14:17:39,801 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 400 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 1418 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 400 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 1456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:17:39,801 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [400 Valid, 24 Invalid, 1456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1418 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-19 14:17:39,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2704 states. [2021-11-19 14:17:39,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2704 to 1929. [2021-11-19 14:17:39,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1929 states, 1919 states have (on average 2.2652423137050546) internal successors, (4347), 1928 states have internal predecessors, (4347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:17:39,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1929 states to 1929 states and 4347 transitions. [2021-11-19 14:17:39,863 INFO L78 Accepts]: Start accepts. Automaton has 1929 states and 4347 transitions. Word has length 15 [2021-11-19 14:17:39,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:17:39,863 INFO L470 AbstractCegarLoop]: Abstraction has 1929 states and 4347 transitions. [2021-11-19 14:17:39,863 INFO L471 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) [2021-11-19 14:17:39,863 INFO L276 IsEmpty]: Start isEmpty. Operand 1929 states and 4347 transitions. [2021-11-19 14:17:39,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-19 14:17:39,864 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:17:39,865 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:17:39,865 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-19 14:17:39,865 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-19 14:17:39,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:17:39,866 INFO L85 PathProgramCache]: Analyzing trace with hash 2109978108, now seen corresponding path program 3 times [2021-11-19 14:17:39,866 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:17:39,866 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961327467] [2021-11-19 14:17:39,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:17:39,866 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:17:39,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:17:40,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:17:40,148 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:17:40,149 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961327467] [2021-11-19 14:17:40,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961327467] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:17:40,149 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:17:40,149 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-19 14:17:40,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300008954] [2021-11-19 14:17:40,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:17:40,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-19 14:17:40,150 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:17:40,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-19 14:17:40,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-11-19 14:17:40,151 INFO L87 Difference]: Start difference. First operand 1929 states and 4347 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) [2021-11-19 14:17:43,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:17:43,072 INFO L93 Difference]: Finished difference Result 2686 states and 5999 transitions. [2021-11-19 14:17:43,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-19 14:17:43,072 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 [2021-11-19 14:17:43,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:17:43,079 INFO L225 Difference]: With dead ends: 2686 [2021-11-19 14:17:43,079 INFO L226 Difference]: Without dead ends: 2686 [2021-11-19 14:17:43,080 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=325, Invalid=731, Unknown=0, NotChecked=0, Total=1056 [2021-11-19 14:17:43,080 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 493 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 2386 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 493 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 2426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 2386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-11-19 14:17:43,081 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [493 Valid, 35 Invalid, 2426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 2386 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-11-19 14:17:43,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2686 states. [2021-11-19 14:17:43,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2686 to 1973. [2021-11-19 14:17:43,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1973 states, 1963 states have (on average 2.270504330106979) internal successors, (4457), 1972 states have internal predecessors, (4457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:17:43,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1973 states to 1973 states and 4457 transitions. [2021-11-19 14:17:43,154 INFO L78 Accepts]: Start accepts. Automaton has 1973 states and 4457 transitions. Word has length 15 [2021-11-19 14:17:43,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:17:43,154 INFO L470 AbstractCegarLoop]: Abstraction has 1973 states and 4457 transitions. [2021-11-19 14:17:43,155 INFO L471 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) [2021-11-19 14:17:43,155 INFO L276 IsEmpty]: Start isEmpty. Operand 1973 states and 4457 transitions. [2021-11-19 14:17:43,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-19 14:17:43,156 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:17:43,156 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:17:43,156 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-19 14:17:43,156 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-19 14:17:43,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:17:43,157 INFO L85 PathProgramCache]: Analyzing trace with hash -1589137872, now seen corresponding path program 4 times [2021-11-19 14:17:43,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:17:43,157 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146657586] [2021-11-19 14:17:43,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:17:43,158 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:17:43,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:17:43,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:17:43,430 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:17:43,431 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146657586] [2021-11-19 14:17:43,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146657586] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:17:43,431 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:17:43,431 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-19 14:17:43,431 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221288100] [2021-11-19 14:17:43,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:17:43,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-19 14:17:43,431 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:17:43,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-19 14:17:43,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-11-19 14:17:43,432 INFO L87 Difference]: Start difference. First operand 1973 states and 4457 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) [2021-11-19 14:17:46,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:17:46,651 INFO L93 Difference]: Finished difference Result 2664 states and 5973 transitions. [2021-11-19 14:17:46,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-19 14:17:46,652 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 [2021-11-19 14:17:46,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:17:46,658 INFO L225 Difference]: With dead ends: 2664 [2021-11-19 14:17:46,659 INFO L226 Difference]: Without dead ends: 2664 [2021-11-19 14:17:46,659 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=395, Invalid=1011, Unknown=0, NotChecked=0, Total=1406 [2021-11-19 14:17:46,660 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 428 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 2936 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 428 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 2976 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 2936 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-11-19 14:17:46,660 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [428 Valid, 35 Invalid, 2976 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 2936 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-11-19 14:17:46,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2664 states. [2021-11-19 14:17:46,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2664 to 1973. [2021-11-19 14:17:46,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1973 states, 1963 states have (on average 2.270504330106979) internal successors, (4457), 1972 states have internal predecessors, (4457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:17:46,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1973 states to 1973 states and 4457 transitions. [2021-11-19 14:17:46,719 INFO L78 Accepts]: Start accepts. Automaton has 1973 states and 4457 transitions. Word has length 15 [2021-11-19 14:17:46,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:17:46,719 INFO L470 AbstractCegarLoop]: Abstraction has 1973 states and 4457 transitions. [2021-11-19 14:17:46,719 INFO L471 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) [2021-11-19 14:17:46,719 INFO L276 IsEmpty]: Start isEmpty. Operand 1973 states and 4457 transitions. [2021-11-19 14:17:46,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-19 14:17:46,721 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:17:46,721 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:17:46,721 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-19 14:17:46,721 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-19 14:17:46,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:17:46,722 INFO L85 PathProgramCache]: Analyzing trace with hash 1218008820, now seen corresponding path program 2 times [2021-11-19 14:17:46,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:17:46,722 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506841996] [2021-11-19 14:17:46,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:17:46,722 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:17:46,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:17:46,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:17:46,881 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:17:46,881 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506841996] [2021-11-19 14:17:46,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506841996] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:17:46,881 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:17:46,881 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-19 14:17:46,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386070691] [2021-11-19 14:17:46,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:17:46,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 14:17:46,882 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:17:46,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 14:17:46,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-19 14:17:46,882 INFO L87 Difference]: Start difference. First operand 1973 states and 4457 transitions. Second operand has 11 states, 10 states have (on average 1.5) internal successors, (15), 10 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) [2021-11-19 14:17:48,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:17:48,798 INFO L93 Difference]: Finished difference Result 2480 states and 5547 transitions. [2021-11-19 14:17:48,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-19 14:17:48,798 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.5) internal successors, (15), 10 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 [2021-11-19 14:17:48,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:17:48,805 INFO L225 Difference]: With dead ends: 2480 [2021-11-19 14:17:48,806 INFO L226 Difference]: Without dead ends: 2480 [2021-11-19 14:17:48,806 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=290, Invalid=702, Unknown=0, NotChecked=0, Total=992 [2021-11-19 14:17:48,807 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 689 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 1986 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 689 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 2014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1986 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-19 14:17:48,807 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [689 Valid, 22 Invalid, 2014 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1986 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-19 14:17:48,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2480 states. [2021-11-19 14:17:48,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2480 to 1965. [2021-11-19 14:17:48,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1965 states, 1955 states have (on average 2.2705882352941176) internal successors, (4439), 1964 states have internal predecessors, (4439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:17:48,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1965 states to 1965 states and 4439 transitions. [2021-11-19 14:17:48,864 INFO L78 Accepts]: Start accepts. Automaton has 1965 states and 4439 transitions. Word has length 15 [2021-11-19 14:17:48,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:17:48,864 INFO L470 AbstractCegarLoop]: Abstraction has 1965 states and 4439 transitions. [2021-11-19 14:17:48,864 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.5) internal successors, (15), 10 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) [2021-11-19 14:17:48,864 INFO L276 IsEmpty]: Start isEmpty. Operand 1965 states and 4439 transitions. [2021-11-19 14:17:48,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-19 14:17:48,865 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:17:48,866 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:17:48,866 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-19 14:17:48,866 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-19 14:17:48,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:17:48,867 INFO L85 PathProgramCache]: Analyzing trace with hash 1157488478, now seen corresponding path program 3 times [2021-11-19 14:17:48,867 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:17:48,867 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634054242] [2021-11-19 14:17:48,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:17:48,867 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:17:48,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:17:49,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:17:49,034 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:17:49,035 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634054242] [2021-11-19 14:17:49,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634054242] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:17:49,035 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:17:49,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-19 14:17:49,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978949063] [2021-11-19 14:17:49,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:17:49,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 14:17:49,036 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:17:49,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 14:17:49,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-11-19 14:17:49,036 INFO L87 Difference]: Start difference. First operand 1965 states and 4439 transitions. Second operand has 11 states, 10 states have (on average 1.5) internal successors, (15), 10 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) [2021-11-19 14:17:50,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:17:50,440 INFO L93 Difference]: Finished difference Result 2387 states and 5352 transitions. [2021-11-19 14:17:50,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-19 14:17:50,440 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.5) internal successors, (15), 10 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 [2021-11-19 14:17:50,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:17:50,445 INFO L225 Difference]: With dead ends: 2387 [2021-11-19 14:17:50,446 INFO L226 Difference]: Without dead ends: 2387 [2021-11-19 14:17:50,446 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=227, Invalid=475, Unknown=0, NotChecked=0, Total=702 [2021-11-19 14:17:50,447 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 627 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 1292 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 627 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 1317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:17:50,447 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [627 Valid, 22 Invalid, 1317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1292 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-19 14:17:50,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2387 states. [2021-11-19 14:17:50,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2387 to 1967. [2021-11-19 14:17:50,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1967 states, 1957 states have (on average 2.270311701584057) internal successors, (4443), 1966 states have internal predecessors, (4443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:17:50,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1967 states to 1967 states and 4443 transitions. [2021-11-19 14:17:50,502 INFO L78 Accepts]: Start accepts. Automaton has 1967 states and 4443 transitions. Word has length 15 [2021-11-19 14:17:50,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:17:50,503 INFO L470 AbstractCegarLoop]: Abstraction has 1967 states and 4443 transitions. [2021-11-19 14:17:50,503 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.5) internal successors, (15), 10 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) [2021-11-19 14:17:50,503 INFO L276 IsEmpty]: Start isEmpty. Operand 1967 states and 4443 transitions. [2021-11-19 14:17:50,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-19 14:17:50,504 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:17:50,504 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:17:50,505 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-19 14:17:50,505 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-19 14:17:50,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:17:50,505 INFO L85 PathProgramCache]: Analyzing trace with hash 2097695960, now seen corresponding path program 4 times [2021-11-19 14:17:50,506 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:17:50,506 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931690962] [2021-11-19 14:17:50,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:17:50,506 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:17:50,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:17:50,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:17:50,678 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:17:50,678 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931690962] [2021-11-19 14:17:50,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931690962] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:17:50,678 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:17:50,679 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-19 14:17:50,679 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172410940] [2021-11-19 14:17:50,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:17:50,679 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 14:17:50,679 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:17:50,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 14:17:50,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-19 14:17:50,680 INFO L87 Difference]: Start difference. First operand 1967 states and 4443 transitions. Second operand has 11 states, 10 states have (on average 1.5) internal successors, (15), 10 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) [2021-11-19 14:17:52,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:17:52,373 INFO L93 Difference]: Finished difference Result 2340 states and 5250 transitions. [2021-11-19 14:17:52,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-19 14:17:52,374 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.5) internal successors, (15), 10 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 [2021-11-19 14:17:52,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:17:52,377 INFO L225 Difference]: With dead ends: 2340 [2021-11-19 14:17:52,377 INFO L226 Difference]: Without dead ends: 2340 [2021-11-19 14:17:52,377 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2021-11-19 14:17:52,378 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 464 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 1798 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 464 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 1825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1798 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:17:52,378 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [464 Valid, 22 Invalid, 1825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1798 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-19 14:17:52,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2340 states. [2021-11-19 14:17:52,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2340 to 1953. [2021-11-19 14:17:52,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1953 states, 1943 states have (on average 2.2702007205352546) internal successors, (4411), 1952 states have internal predecessors, (4411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:17:52,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1953 states to 1953 states and 4411 transitions. [2021-11-19 14:17:52,426 INFO L78 Accepts]: Start accepts. Automaton has 1953 states and 4411 transitions. Word has length 15 [2021-11-19 14:17:52,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:17:52,426 INFO L470 AbstractCegarLoop]: Abstraction has 1953 states and 4411 transitions. [2021-11-19 14:17:52,426 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.5) internal successors, (15), 10 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) [2021-11-19 14:17:52,426 INFO L276 IsEmpty]: Start isEmpty. Operand 1953 states and 4411 transitions. [2021-11-19 14:17:52,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-19 14:17:52,427 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:17:52,428 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:17:52,428 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-19 14:17:52,428 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-19 14:17:52,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:17:52,429 INFO L85 PathProgramCache]: Analyzing trace with hash -608276146, now seen corresponding path program 5 times [2021-11-19 14:17:52,429 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:17:52,429 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188384744] [2021-11-19 14:17:52,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:17:52,429 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:17:52,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:17:52,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:17:52,740 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:17:52,740 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188384744] [2021-11-19 14:17:52,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188384744] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:17:52,740 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:17:52,740 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-19 14:17:52,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293530909] [2021-11-19 14:17:52,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:17:52,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-19 14:17:52,741 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:17:52,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-19 14:17:52,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-19 14:17:52,741 INFO L87 Difference]: Start difference. First operand 1953 states and 4411 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) [2021-11-19 14:17:56,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:17:56,078 INFO L93 Difference]: Finished difference Result 2499 states and 5589 transitions. [2021-11-19 14:17:56,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-19 14:17:56,079 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 [2021-11-19 14:17:56,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:17:56,081 INFO L225 Difference]: With dead ends: 2499 [2021-11-19 14:17:56,081 INFO L226 Difference]: Without dead ends: 2499 [2021-11-19 14:17:56,082 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=452, Invalid=1108, Unknown=0, NotChecked=0, Total=1560 [2021-11-19 14:17:56,082 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 430 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 3038 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 430 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 3078 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 3038 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-11-19 14:17:56,083 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [430 Valid, 35 Invalid, 3078 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 3038 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-11-19 14:17:56,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2499 states. [2021-11-19 14:17:56,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2499 to 1953. [2021-11-19 14:17:56,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1953 states, 1943 states have (on average 2.2702007205352546) internal successors, (4411), 1952 states have internal predecessors, (4411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:17:56,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1953 states to 1953 states and 4411 transitions. [2021-11-19 14:17:56,125 INFO L78 Accepts]: Start accepts. Automaton has 1953 states and 4411 transitions. Word has length 15 [2021-11-19 14:17:56,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:17:56,126 INFO L470 AbstractCegarLoop]: Abstraction has 1953 states and 4411 transitions. [2021-11-19 14:17:56,126 INFO L471 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) [2021-11-19 14:17:56,126 INFO L276 IsEmpty]: Start isEmpty. Operand 1953 states and 4411 transitions. [2021-11-19 14:17:56,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-19 14:17:56,127 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:17:56,127 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:17:56,128 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-19 14:17:56,128 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-19 14:17:56,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:17:56,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1652178058, now seen corresponding path program 6 times [2021-11-19 14:17:56,129 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:17:56,129 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641641983] [2021-11-19 14:17:56,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:17:56,129 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:17:56,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:17:56,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:17:56,391 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:17:56,391 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641641983] [2021-11-19 14:17:56,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641641983] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:17:56,391 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:17:56,391 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-19 14:17:56,392 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825219348] [2021-11-19 14:17:56,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:17:56,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-19 14:17:56,392 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:17:56,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-19 14:17:56,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2021-11-19 14:17:56,393 INFO L87 Difference]: Start difference. First operand 1953 states and 4411 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) [2021-11-19 14:17:59,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:17:59,655 INFO L93 Difference]: Finished difference Result 2457 states and 5502 transitions. [2021-11-19 14:17:59,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-19 14:17:59,656 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 [2021-11-19 14:17:59,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:17:59,659 INFO L225 Difference]: With dead ends: 2457 [2021-11-19 14:17:59,659 INFO L226 Difference]: Without dead ends: 2457 [2021-11-19 14:17:59,659 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=471, Invalid=1169, Unknown=0, NotChecked=0, Total=1640 [2021-11-19 14:17:59,660 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 405 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 3104 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 405 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 3140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 3104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:17:59,660 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [405 Valid, 35 Invalid, 3140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 3104 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-11-19 14:17:59,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2457 states. [2021-11-19 14:17:59,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2457 to 1957. [2021-11-19 14:17:59,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1957 states, 1947 states have (on average 2.2696456086286596) internal successors, (4419), 1956 states have internal predecessors, (4419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:17:59,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1957 states to 1957 states and 4419 transitions. [2021-11-19 14:17:59,701 INFO L78 Accepts]: Start accepts. Automaton has 1957 states and 4419 transitions. Word has length 15 [2021-11-19 14:17:59,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:17:59,702 INFO L470 AbstractCegarLoop]: Abstraction has 1957 states and 4419 transitions. [2021-11-19 14:17:59,702 INFO L471 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) [2021-11-19 14:17:59,702 INFO L276 IsEmpty]: Start isEmpty. Operand 1957 states and 4419 transitions. [2021-11-19 14:17:59,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-19 14:17:59,703 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:17:59,704 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:17:59,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-19 14:17:59,704 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-19 14:17:59,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:17:59,705 INFO L85 PathProgramCache]: Analyzing trace with hash 293412896, now seen corresponding path program 7 times [2021-11-19 14:17:59,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:17:59,705 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636657882] [2021-11-19 14:17:59,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:17:59,705 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:17:59,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:17:59,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:17:59,969 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:17:59,969 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636657882] [2021-11-19 14:17:59,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636657882] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:17:59,969 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:17:59,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-19 14:17:59,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253347342] [2021-11-19 14:17:59,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:17:59,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-19 14:17:59,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:17:59,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-19 14:17:59,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2021-11-19 14:17:59,971 INFO L87 Difference]: Start difference. First operand 1957 states and 4419 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) [2021-11-19 14:18:03,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:18:03,626 INFO L93 Difference]: Finished difference Result 2431 states and 5447 transitions. [2021-11-19 14:18:03,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-19 14:18:03,626 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 [2021-11-19 14:18:03,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:18:03,629 INFO L225 Difference]: With dead ends: 2431 [2021-11-19 14:18:03,629 INFO L226 Difference]: Without dead ends: 2431 [2021-11-19 14:18:03,630 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=469, Invalid=1171, Unknown=0, NotChecked=0, Total=1640 [2021-11-19 14:18:03,630 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 396 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 3400 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 396 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 3438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 3400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:18:03,631 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [396 Valid, 35 Invalid, 3438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 3400 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-11-19 14:18:03,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2431 states. [2021-11-19 14:18:03,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2431 to 1957. [2021-11-19 14:18:03,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1957 states, 1947 states have (on average 2.2696456086286596) internal successors, (4419), 1956 states have internal predecessors, (4419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:18:03,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1957 states to 1957 states and 4419 transitions. [2021-11-19 14:18:03,674 INFO L78 Accepts]: Start accepts. Automaton has 1957 states and 4419 transitions. Word has length 15 [2021-11-19 14:18:03,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:18:03,674 INFO L470 AbstractCegarLoop]: Abstraction has 1957 states and 4419 transitions. [2021-11-19 14:18:03,674 INFO L471 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) [2021-11-19 14:18:03,674 INFO L276 IsEmpty]: Start isEmpty. Operand 1957 states and 4419 transitions. [2021-11-19 14:18:03,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-19 14:18:03,676 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:18:03,676 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:18:03,676 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-19 14:18:03,676 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-19 14:18:03,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:18:03,677 INFO L85 PathProgramCache]: Analyzing trace with hash -1087560822, now seen corresponding path program 8 times [2021-11-19 14:18:03,677 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:18:03,677 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746330716] [2021-11-19 14:18:03,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:18:03,677 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:18:03,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:18:03,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:18:03,934 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:18:03,934 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746330716] [2021-11-19 14:18:03,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746330716] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:18:03,935 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:18:03,935 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-19 14:18:03,935 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197755601] [2021-11-19 14:18:03,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:18:03,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-19 14:18:03,935 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:18:03,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-19 14:18:03,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-11-19 14:18:03,936 INFO L87 Difference]: Start difference. First operand 1957 states and 4419 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) [2021-11-19 14:18:07,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:18:07,957 INFO L93 Difference]: Finished difference Result 2747 states and 6144 transitions. [2021-11-19 14:18:07,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-11-19 14:18:07,957 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 [2021-11-19 14:18:07,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:18:07,961 INFO L225 Difference]: With dead ends: 2747 [2021-11-19 14:18:07,961 INFO L226 Difference]: Without dead ends: 2747 [2021-11-19 14:18:07,961 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=510, Invalid=1212, Unknown=0, NotChecked=0, Total=1722 [2021-11-19 14:18:07,962 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 430 mSDsluCounter, 400 mSDsCounter, 0 mSdLazyCounter, 3372 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 430 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 3414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 3372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:18:07,962 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [430 Valid, 35 Invalid, 3414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 3372 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-11-19 14:18:07,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2747 states. [2021-11-19 14:18:07,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2747 to 1957. [2021-11-19 14:18:07,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1957 states, 1947 states have (on average 2.2696456086286596) internal successors, (4419), 1956 states have internal predecessors, (4419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:18:08,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1957 states to 1957 states and 4419 transitions. [2021-11-19 14:18:08,004 INFO L78 Accepts]: Start accepts. Automaton has 1957 states and 4419 transitions. Word has length 15 [2021-11-19 14:18:08,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:18:08,005 INFO L470 AbstractCegarLoop]: Abstraction has 1957 states and 4419 transitions. [2021-11-19 14:18:08,005 INFO L471 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) [2021-11-19 14:18:08,005 INFO L276 IsEmpty]: Start isEmpty. Operand 1957 states and 4419 transitions. [2021-11-19 14:18:08,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-19 14:18:08,006 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:18:08,006 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:18:08,006 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-19 14:18:08,007 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-19 14:18:08,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:18:08,007 INFO L85 PathProgramCache]: Analyzing trace with hash -495046284, now seen corresponding path program 9 times [2021-11-19 14:18:08,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:18:08,008 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631026486] [2021-11-19 14:18:08,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:18:08,008 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:18:08,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:18:08,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:18:08,246 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:18:08,247 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631026486] [2021-11-19 14:18:08,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631026486] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:18:08,247 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:18:08,247 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-19 14:18:08,247 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205155967] [2021-11-19 14:18:08,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:18:08,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-19 14:18:08,248 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:18:08,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-19 14:18:08,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-11-19 14:18:08,249 INFO L87 Difference]: Start difference. First operand 1957 states and 4419 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) [2021-11-19 14:18:11,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:18:11,371 INFO L93 Difference]: Finished difference Result 2921 states and 6520 transitions. [2021-11-19 14:18:11,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-19 14:18:11,371 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 [2021-11-19 14:18:11,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:18:11,374 INFO L225 Difference]: With dead ends: 2921 [2021-11-19 14:18:11,374 INFO L226 Difference]: Without dead ends: 2921 [2021-11-19 14:18:11,375 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=409, Invalid=923, Unknown=0, NotChecked=0, Total=1332 [2021-11-19 14:18:11,375 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 478 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 2800 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 2830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 2800 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-11-19 14:18:11,376 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [478 Valid, 35 Invalid, 2830 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 2800 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-11-19 14:18:11,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2921 states. [2021-11-19 14:18:11,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2921 to 1913. [2021-11-19 14:18:11,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1913 states, 1903 states have (on average 2.2643194955333685) internal successors, (4309), 1912 states have internal predecessors, (4309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:18:11,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1913 states to 1913 states and 4309 transitions. [2021-11-19 14:18:11,414 INFO L78 Accepts]: Start accepts. Automaton has 1913 states and 4309 transitions. Word has length 15 [2021-11-19 14:18:11,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:18:11,415 INFO L470 AbstractCegarLoop]: Abstraction has 1913 states and 4309 transitions. [2021-11-19 14:18:11,415 INFO L471 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) [2021-11-19 14:18:11,415 INFO L276 IsEmpty]: Start isEmpty. Operand 1913 states and 4309 transitions. [2021-11-19 14:18:11,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-19 14:18:11,416 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:18:11,416 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:18:11,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-19 14:18:11,417 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-19 14:18:11,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:18:11,417 INFO L85 PathProgramCache]: Analyzing trace with hash 509178348, now seen corresponding path program 1 times [2021-11-19 14:18:11,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:18:11,418 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268467081] [2021-11-19 14:18:11,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:18:11,418 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:18:11,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:18:11,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:18:11,675 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:18:11,675 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268467081] [2021-11-19 14:18:11,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268467081] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:18:11,675 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:18:11,675 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-19 14:18:11,676 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121356011] [2021-11-19 14:18:11,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:18:11,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-19 14:18:11,676 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:18:11,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-19 14:18:11,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2021-11-19 14:18:11,677 INFO L87 Difference]: Start difference. First operand 1913 states and 4309 transitions. Second operand has 15 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 14 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:18:14,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:18:14,193 INFO L93 Difference]: Finished difference Result 2945 states and 6553 transitions. [2021-11-19 14:18:14,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-19 14:18:14,194 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 14 states have internal predecessors, (16), 0 states have call successors, (0), 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 16 [2021-11-19 14:18:14,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:18:14,197 INFO L225 Difference]: With dead ends: 2945 [2021-11-19 14:18:14,197 INFO L226 Difference]: Without dead ends: 2945 [2021-11-19 14:18:14,197 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=307, Invalid=685, Unknown=0, NotChecked=0, Total=992 [2021-11-19 14:18:14,198 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 517 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 2513 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 517 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 2588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 2513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-11-19 14:18:14,198 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [517 Valid, 24 Invalid, 2588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 2513 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-11-19 14:18:14,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2945 states. [2021-11-19 14:18:14,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2945 to 1987. [2021-11-19 14:18:14,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1987 states, 1977 states have (on average 2.2660596863935254) internal successors, (4480), 1986 states have internal predecessors, (4480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:18:14,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1987 states to 1987 states and 4480 transitions. [2021-11-19 14:18:14,246 INFO L78 Accepts]: Start accepts. Automaton has 1987 states and 4480 transitions. Word has length 16 [2021-11-19 14:18:14,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:18:14,246 INFO L470 AbstractCegarLoop]: Abstraction has 1987 states and 4480 transitions. [2021-11-19 14:18:14,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 14 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:18:14,247 INFO L276 IsEmpty]: Start isEmpty. Operand 1987 states and 4480 transitions. [2021-11-19 14:18:14,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-19 14:18:14,248 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:18:14,248 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:18:14,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-19 14:18:14,249 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-19 14:18:14,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:18:14,249 INFO L85 PathProgramCache]: Analyzing trace with hash 424315018, now seen corresponding path program 2 times [2021-11-19 14:18:14,249 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:18:14,249 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826354601] [2021-11-19 14:18:14,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:18:14,250 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:18:14,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:18:14,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:18:14,447 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:18:14,447 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826354601] [2021-11-19 14:18:14,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826354601] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:18:14,447 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:18:14,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-19 14:18:14,447 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601416953] [2021-11-19 14:18:14,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:18:14,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-19 14:18:14,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:18:14,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-19 14:18:14,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2021-11-19 14:18:14,448 INFO L87 Difference]: Start difference. First operand 1987 states and 4480 transitions. Second operand has 14 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:18:16,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:18:16,788 INFO L93 Difference]: Finished difference Result 3097 states and 6900 transitions. [2021-11-19 14:18:16,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-19 14:18:16,789 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 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 16 [2021-11-19 14:18:16,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:18:16,793 INFO L225 Difference]: With dead ends: 3097 [2021-11-19 14:18:16,793 INFO L226 Difference]: Without dead ends: 3097 [2021-11-19 14:18:16,794 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=368, Invalid=822, Unknown=0, NotChecked=0, Total=1190 [2021-11-19 14:18:16,795 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 609 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 2249 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 609 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 2324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 2249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-11-19 14:18:16,795 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [609 Valid, 24 Invalid, 2324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 2249 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-11-19 14:18:16,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3097 states. [2021-11-19 14:18:16,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3097 to 1982. [2021-11-19 14:18:16,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1982 states, 1972 states have (on average 2.265720081135903) internal successors, (4468), 1981 states have internal predecessors, (4468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:18:16,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1982 states to 1982 states and 4468 transitions. [2021-11-19 14:18:16,842 INFO L78 Accepts]: Start accepts. Automaton has 1982 states and 4468 transitions. Word has length 16 [2021-11-19 14:18:16,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:18:16,843 INFO L470 AbstractCegarLoop]: Abstraction has 1982 states and 4468 transitions. [2021-11-19 14:18:16,843 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:18:16,843 INFO L276 IsEmpty]: Start isEmpty. Operand 1982 states and 4468 transitions. [2021-11-19 14:18:16,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-19 14:18:16,844 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:18:16,845 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:18:16,845 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-19 14:18:16,845 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-19 14:18:16,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:18:16,846 INFO L85 PathProgramCache]: Analyzing trace with hash -962239554, now seen corresponding path program 3 times [2021-11-19 14:18:16,846 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:18:16,846 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916713852] [2021-11-19 14:18:16,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:18:16,846 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:18:16,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:18:17,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:18:17,044 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:18:17,044 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916713852] [2021-11-19 14:18:17,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916713852] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:18:17,044 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:18:17,044 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-19 14:18:17,044 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304132491] [2021-11-19 14:18:17,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:18:17,045 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-19 14:18:17,045 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:18:17,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-19 14:18:17,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-11-19 14:18:17,046 INFO L87 Difference]: Start difference. First operand 1982 states and 4468 transitions. Second operand has 13 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:18:19,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:18:19,200 INFO L93 Difference]: Finished difference Result 2569 states and 5732 transitions. [2021-11-19 14:18:19,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-19 14:18:19,201 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 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 16 [2021-11-19 14:18:19,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:18:19,204 INFO L225 Difference]: With dead ends: 2569 [2021-11-19 14:18:19,204 INFO L226 Difference]: Without dead ends: 2569 [2021-11-19 14:18:19,205 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=396, Invalid=1010, Unknown=0, NotChecked=0, Total=1406 [2021-11-19 14:18:19,205 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 680 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 2027 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 680 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 2072 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 2027 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-19 14:18:19,214 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [680 Valid, 22 Invalid, 2072 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 2027 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-19 14:18:19,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2569 states. [2021-11-19 14:18:19,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2569 to 1974. [2021-11-19 14:18:19,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1974 states, 1964 states have (on average 2.2657841140529533) internal successors, (4450), 1973 states have internal predecessors, (4450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:18:19,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1974 states to 1974 states and 4450 transitions. [2021-11-19 14:18:19,281 INFO L78 Accepts]: Start accepts. Automaton has 1974 states and 4450 transitions. Word has length 16 [2021-11-19 14:18:19,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:18:19,281 INFO L470 AbstractCegarLoop]: Abstraction has 1974 states and 4450 transitions. [2021-11-19 14:18:19,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:18:19,282 INFO L276 IsEmpty]: Start isEmpty. Operand 1974 states and 4450 transitions. [2021-11-19 14:18:19,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-19 14:18:19,283 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:18:19,283 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:18:19,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-19 14:18:19,284 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-19 14:18:19,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:18:19,284 INFO L85 PathProgramCache]: Analyzing trace with hash -815264520, now seen corresponding path program 4 times [2021-11-19 14:18:19,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:18:19,285 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834535022] [2021-11-19 14:18:19,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:18:19,285 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:18:19,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:18:19,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:18:19,489 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:18:19,489 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834535022] [2021-11-19 14:18:19,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834535022] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:18:19,489 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:18:19,489 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-19 14:18:19,489 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806968409] [2021-11-19 14:18:19,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:18:19,490 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-19 14:18:19,490 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:18:19,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-19 14:18:19,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2021-11-19 14:18:19,490 INFO L87 Difference]: Start difference. First operand 1974 states and 4450 transitions. Second operand has 13 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:18:21,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:18:21,451 INFO L93 Difference]: Finished difference Result 2614 states and 5829 transitions. [2021-11-19 14:18:21,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-19 14:18:21,452 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 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 16 [2021-11-19 14:18:21,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:18:21,455 INFO L225 Difference]: With dead ends: 2614 [2021-11-19 14:18:21,455 INFO L226 Difference]: Without dead ends: 2614 [2021-11-19 14:18:21,455 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=331, Invalid=725, Unknown=0, NotChecked=0, Total=1056 [2021-11-19 14:18:21,456 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 586 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 1539 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 586 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 1580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1539 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:18:21,456 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [586 Valid, 22 Invalid, 1580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1539 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-19 14:18:21,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2614 states. [2021-11-19 14:18:21,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2614 to 1978. [2021-11-19 14:18:21,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1978 states, 1968 states have (on average 2.2652439024390243) internal successors, (4458), 1977 states have internal predecessors, (4458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:18:21,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1978 states to 1978 states and 4458 transitions. [2021-11-19 14:18:21,491 INFO L78 Accepts]: Start accepts. Automaton has 1978 states and 4458 transitions. Word has length 16 [2021-11-19 14:18:21,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:18:21,492 INFO L470 AbstractCegarLoop]: Abstraction has 1978 states and 4458 transitions. [2021-11-19 14:18:21,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:18:21,492 INFO L276 IsEmpty]: Start isEmpty. Operand 1978 states and 4458 transitions. [2021-11-19 14:18:21,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-19 14:18:21,493 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:18:21,494 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:18:21,494 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-19 14:18:21,494 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-19 14:18:21,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:18:21,495 INFO L85 PathProgramCache]: Analyzing trace with hash 1456597140, now seen corresponding path program 5 times [2021-11-19 14:18:21,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:18:21,495 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262137491] [2021-11-19 14:18:21,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:18:21,495 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:18:21,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:18:21,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:18:21,682 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:18:21,682 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262137491] [2021-11-19 14:18:21,682 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262137491] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:18:21,682 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:18:21,682 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-19 14:18:21,682 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607178109] [2021-11-19 14:18:21,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:18:21,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-19 14:18:21,683 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:18:21,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-19 14:18:21,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-11-19 14:18:21,684 INFO L87 Difference]: Start difference. First operand 1978 states and 4458 transitions. Second operand has 13 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:18:23,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:18:23,730 INFO L93 Difference]: Finished difference Result 2650 states and 5911 transitions. [2021-11-19 14:18:23,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-19 14:18:23,730 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 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 16 [2021-11-19 14:18:23,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:18:23,733 INFO L225 Difference]: With dead ends: 2650 [2021-11-19 14:18:23,734 INFO L226 Difference]: Without dead ends: 2650 [2021-11-19 14:18:23,734 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=308, Invalid=748, Unknown=0, NotChecked=0, Total=1056 [2021-11-19 14:18:23,738 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 576 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 2038 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 576 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 2079 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 2038 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-19 14:18:23,740 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [576 Valid, 22 Invalid, 2079 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 2038 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-19 14:18:23,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2650 states. [2021-11-19 14:18:23,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2650 to 1978. [2021-11-19 14:18:23,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1978 states, 1968 states have (on average 2.2652439024390243) internal successors, (4458), 1977 states have internal predecessors, (4458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:18:23,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1978 states to 1978 states and 4458 transitions. [2021-11-19 14:18:23,784 INFO L78 Accepts]: Start accepts. Automaton has 1978 states and 4458 transitions. Word has length 16 [2021-11-19 14:18:23,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:18:23,784 INFO L470 AbstractCegarLoop]: Abstraction has 1978 states and 4458 transitions. [2021-11-19 14:18:23,784 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:18:23,785 INFO L276 IsEmpty]: Start isEmpty. Operand 1978 states and 4458 transitions. [2021-11-19 14:18:23,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-19 14:18:23,786 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:18:23,786 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:18:23,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-19 14:18:23,786 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-19 14:18:23,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:18:23,787 INFO L85 PathProgramCache]: Analyzing trace with hash 538258010, now seen corresponding path program 6 times [2021-11-19 14:18:23,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:18:23,787 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358755517] [2021-11-19 14:18:23,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:18:23,788 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:18:23,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:18:24,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:18:24,014 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:18:24,014 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358755517] [2021-11-19 14:18:24,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358755517] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:18:24,014 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:18:24,014 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-19 14:18:24,014 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037518724] [2021-11-19 14:18:24,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:18:24,015 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-19 14:18:24,015 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:18:24,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-19 14:18:24,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-11-19 14:18:24,015 INFO L87 Difference]: Start difference. First operand 1978 states and 4458 transitions. Second operand has 13 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:18:26,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:18:26,175 INFO L93 Difference]: Finished difference Result 2617 states and 5835 transitions. [2021-11-19 14:18:26,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-19 14:18:26,176 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 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 16 [2021-11-19 14:18:26,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:18:26,179 INFO L225 Difference]: With dead ends: 2617 [2021-11-19 14:18:26,179 INFO L226 Difference]: Without dead ends: 2617 [2021-11-19 14:18:26,180 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=307, Invalid=749, Unknown=0, NotChecked=0, Total=1056 [2021-11-19 14:18:26,180 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 602 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 1942 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 602 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 1991 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1942 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-19 14:18:26,181 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [602 Valid, 22 Invalid, 1991 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1942 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-11-19 14:18:26,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2617 states. [2021-11-19 14:18:26,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2617 to 1949. [2021-11-19 14:18:26,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1949 states, 1939 states have (on average 2.264569365652398) internal successors, (4391), 1948 states have internal predecessors, (4391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:18:26,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1949 states to 1949 states and 4391 transitions. [2021-11-19 14:18:26,212 INFO L78 Accepts]: Start accepts. Automaton has 1949 states and 4391 transitions. Word has length 16 [2021-11-19 14:18:26,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:18:26,212 INFO L470 AbstractCegarLoop]: Abstraction has 1949 states and 4391 transitions. [2021-11-19 14:18:26,212 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:18:26,212 INFO L276 IsEmpty]: Start isEmpty. Operand 1949 states and 4391 transitions. [2021-11-19 14:18:26,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-19 14:18:26,213 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:18:26,213 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:18:26,213 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-19 14:18:26,214 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-19 14:18:26,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:18:26,214 INFO L85 PathProgramCache]: Analyzing trace with hash -1065326767, now seen corresponding path program 1 times [2021-11-19 14:18:26,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:18:26,215 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624563319] [2021-11-19 14:18:26,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:18:26,215 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:18:26,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:18:27,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:18:27,464 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:18:27,464 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624563319] [2021-11-19 14:18:27,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624563319] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:18:27,465 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:18:27,465 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-19 14:18:27,465 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319593393] [2021-11-19 14:18:27,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:18:27,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-19 14:18:27,465 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:18:27,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-19 14:18:27,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2021-11-19 14:18:27,466 INFO L87 Difference]: Start difference. First operand 1949 states and 4391 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) [2021-11-19 14:18:31,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:18:31,110 INFO L93 Difference]: Finished difference Result 3332 states and 7481 transitions. [2021-11-19 14:18:31,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-19 14:18:31,110 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 [2021-11-19 14:18:31,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:18:31,114 INFO L225 Difference]: With dead ends: 3332 [2021-11-19 14:18:31,114 INFO L226 Difference]: Without dead ends: 3332 [2021-11-19 14:18:31,115 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=248, Invalid=874, Unknown=0, NotChecked=0, Total=1122 [2021-11-19 14:18:31,115 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 529 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 2461 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 529 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 2528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 2461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:18:31,116 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [529 Valid, 35 Invalid, 2528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 2461 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-11-19 14:18:31,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3332 states. [2021-11-19 14:18:31,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3332 to 2156. [2021-11-19 14:18:31,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2156 states, 2146 states have (on average 2.284249767008388) internal successors, (4902), 2155 states have internal predecessors, (4902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:18:31,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2156 states to 2156 states and 4902 transitions. [2021-11-19 14:18:31,167 INFO L78 Accepts]: Start accepts. Automaton has 2156 states and 4902 transitions. Word has length 17 [2021-11-19 14:18:31,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:18:31,167 INFO L470 AbstractCegarLoop]: Abstraction has 2156 states and 4902 transitions. [2021-11-19 14:18:31,167 INFO L471 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) [2021-11-19 14:18:31,167 INFO L276 IsEmpty]: Start isEmpty. Operand 2156 states and 4902 transitions. [2021-11-19 14:18:31,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-19 14:18:31,169 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:18:31,169 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:18:31,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-19 14:18:31,169 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-19 14:18:31,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:18:31,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1079395807, now seen corresponding path program 2 times [2021-11-19 14:18:31,170 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:18:31,170 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378266346] [2021-11-19 14:18:31,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:18:31,171 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:18:31,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:18:32,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:18:32,291 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:18:32,292 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378266346] [2021-11-19 14:18:32,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378266346] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:18:32,292 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:18:32,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-19 14:18:32,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20685525] [2021-11-19 14:18:32,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:18:32,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-19 14:18:32,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:18:32,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-19 14:18:32,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2021-11-19 14:18:32,293 INFO L87 Difference]: Start difference. First operand 2156 states and 4902 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) [2021-11-19 14:18:38,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:18:38,624 INFO L93 Difference]: Finished difference Result 4913 states and 11152 transitions. [2021-11-19 14:18:38,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-19 14:18:38,625 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 [2021-11-19 14:18:38,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:18:38,631 INFO L225 Difference]: With dead ends: 4913 [2021-11-19 14:18:38,631 INFO L226 Difference]: Without dead ends: 4913 [2021-11-19 14:18:38,632 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=427, Invalid=1295, Unknown=0, NotChecked=0, Total=1722 [2021-11-19 14:18:38,633 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 773 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 2855 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 773 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 2946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 2855 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:18:38,633 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [773 Valid, 24 Invalid, 2946 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 2855 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2021-11-19 14:18:38,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4913 states. [2021-11-19 14:18:38,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4913 to 2196. [2021-11-19 14:18:38,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2196 states, 2186 states have (on average 2.294602012808783) internal successors, (5016), 2195 states have internal predecessors, (5016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:18:38,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2196 states to 2196 states and 5016 transitions. [2021-11-19 14:18:38,704 INFO L78 Accepts]: Start accepts. Automaton has 2196 states and 5016 transitions. Word has length 17 [2021-11-19 14:18:38,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:18:38,704 INFO L470 AbstractCegarLoop]: Abstraction has 2196 states and 5016 transitions. [2021-11-19 14:18:38,704 INFO L471 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) [2021-11-19 14:18:38,704 INFO L276 IsEmpty]: Start isEmpty. Operand 2196 states and 5016 transitions. [2021-11-19 14:18:38,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-19 14:18:38,705 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:18:38,705 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:18:38,705 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-19 14:18:38,705 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-19 14:18:38,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:18:38,706 INFO L85 PathProgramCache]: Analyzing trace with hash 1918027967, now seen corresponding path program 3 times [2021-11-19 14:18:38,706 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:18:38,706 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054660534] [2021-11-19 14:18:38,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:18:38,706 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:18:38,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:18:39,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:18:39,231 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:18:39,231 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054660534] [2021-11-19 14:18:39,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054660534] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:18:39,231 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:18:39,231 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-19 14:18:39,231 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472763753] [2021-11-19 14:18:39,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:18:39,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-19 14:18:39,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:18:39,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-19 14:18:39,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2021-11-19 14:18:39,232 INFO L87 Difference]: Start difference. First operand 2196 states and 5016 transitions. Second operand has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 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) [2021-11-19 14:18:42,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:18:42,128 INFO L93 Difference]: Finished difference Result 3681 states and 8405 transitions. [2021-11-19 14:18:42,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-19 14:18:42,129 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 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 [2021-11-19 14:18:42,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:18:42,133 INFO L225 Difference]: With dead ends: 3681 [2021-11-19 14:18:42,134 INFO L226 Difference]: Without dead ends: 3681 [2021-11-19 14:18:42,134 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=213, Invalid=543, Unknown=0, NotChecked=0, Total=756 [2021-11-19 14:18:42,135 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 439 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 2499 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 439 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 2529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 2499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-11-19 14:18:42,135 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [439 Valid, 35 Invalid, 2529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 2499 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-11-19 14:18:42,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3681 states. [2021-11-19 14:18:42,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3681 to 2216. [2021-11-19 14:18:42,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2216 states, 2206 states have (on average 2.2937443336355394) internal successors, (5060), 2215 states have internal predecessors, (5060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:18:42,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2216 states to 2216 states and 5060 transitions. [2021-11-19 14:18:42,169 INFO L78 Accepts]: Start accepts. Automaton has 2216 states and 5060 transitions. Word has length 17 [2021-11-19 14:18:42,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:18:42,169 INFO L470 AbstractCegarLoop]: Abstraction has 2216 states and 5060 transitions. [2021-11-19 14:18:42,169 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 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) [2021-11-19 14:18:42,169 INFO L276 IsEmpty]: Start isEmpty. Operand 2216 states and 5060 transitions. [2021-11-19 14:18:42,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-19 14:18:42,171 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:18:42,171 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:18:42,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-19 14:18:42,171 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-19 14:18:42,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:18:42,172 INFO L85 PathProgramCache]: Analyzing trace with hash 303068501, now seen corresponding path program 4 times [2021-11-19 14:18:42,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:18:42,172 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393485458] [2021-11-19 14:18:42,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:18:42,173 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:18:42,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:18:43,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:18:43,249 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:18:43,249 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393485458] [2021-11-19 14:18:43,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393485458] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:18:43,249 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:18:43,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-19 14:18:43,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667516250] [2021-11-19 14:18:43,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:18:43,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-19 14:18:43,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:18:43,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-19 14:18:43,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2021-11-19 14:18:43,250 INFO L87 Difference]: Start difference. First operand 2216 states and 5060 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) [2021-11-19 14:18:48,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:18:48,954 INFO L93 Difference]: Finished difference Result 4524 states and 10339 transitions. [2021-11-19 14:18:48,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-19 14:18:48,955 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 [2021-11-19 14:18:48,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:18:48,960 INFO L225 Difference]: With dead ends: 4524 [2021-11-19 14:18:48,960 INFO L226 Difference]: Without dead ends: 4524 [2021-11-19 14:18:48,961 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 292 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=380, Invalid=1260, Unknown=0, NotChecked=0, Total=1640 [2021-11-19 14:18:48,961 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 497 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 3675 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 497 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 3733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 3675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2021-11-19 14:18:48,962 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [497 Valid, 34 Invalid, 3733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 3675 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2021-11-19 14:18:48,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4524 states. [2021-11-19 14:18:48,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4524 to 2231. [2021-11-19 14:18:48,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2231 states, 2221 states have (on average 2.295812696983341) internal successors, (5099), 2230 states have internal predecessors, (5099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:18:48,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2231 states to 2231 states and 5099 transitions. [2021-11-19 14:18:49,000 INFO L78 Accepts]: Start accepts. Automaton has 2231 states and 5099 transitions. Word has length 17 [2021-11-19 14:18:49,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:18:49,000 INFO L470 AbstractCegarLoop]: Abstraction has 2231 states and 5099 transitions. [2021-11-19 14:18:49,000 INFO L471 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) [2021-11-19 14:18:49,000 INFO L276 IsEmpty]: Start isEmpty. Operand 2231 states and 5099 transitions. [2021-11-19 14:18:49,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-19 14:18:49,002 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:18:49,002 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:18:49,002 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-19 14:18:49,003 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-19 14:18:49,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:18:49,003 INFO L85 PathProgramCache]: Analyzing trace with hash -994475021, now seen corresponding path program 5 times [2021-11-19 14:18:49,003 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:18:49,003 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098252431] [2021-11-19 14:18:49,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:18:49,004 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:18:49,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:18:49,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:18:49,494 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:18:49,494 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098252431] [2021-11-19 14:18:49,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098252431] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:18:49,495 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:18:49,495 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-19 14:18:49,495 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969523382] [2021-11-19 14:18:49,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:18:49,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-19 14:18:49,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:18:49,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-19 14:18:49,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-11-19 14:18:49,496 INFO L87 Difference]: Start difference. First operand 2231 states and 5099 transitions. Second operand has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 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) [2021-11-19 14:18:52,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:18:52,725 INFO L93 Difference]: Finished difference Result 3653 states and 8364 transitions. [2021-11-19 14:18:52,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-19 14:18:52,726 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 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 [2021-11-19 14:18:52,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:18:52,730 INFO L225 Difference]: With dead ends: 3653 [2021-11-19 14:18:52,730 INFO L226 Difference]: Without dead ends: 3653 [2021-11-19 14:18:52,731 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=256, Invalid=736, Unknown=0, NotChecked=0, Total=992 [2021-11-19 14:18:52,731 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 500 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 2800 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 500 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 2832 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 2800 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:18:52,734 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [500 Valid, 35 Invalid, 2832 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 2800 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-11-19 14:18:52,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3653 states. [2021-11-19 14:18:52,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3653 to 2216. [2021-11-19 14:18:52,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2216 states, 2206 states have (on average 2.2937443336355394) internal successors, (5060), 2215 states have internal predecessors, (5060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:18:52,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2216 states to 2216 states and 5060 transitions. [2021-11-19 14:18:52,770 INFO L78 Accepts]: Start accepts. Automaton has 2216 states and 5060 transitions. Word has length 17 [2021-11-19 14:18:52,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:18:52,770 INFO L470 AbstractCegarLoop]: Abstraction has 2216 states and 5060 transitions. [2021-11-19 14:18:52,771 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 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) [2021-11-19 14:18:52,771 INFO L276 IsEmpty]: Start isEmpty. Operand 2216 states and 5060 transitions. [2021-11-19 14:18:52,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-19 14:18:52,772 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:18:52,772 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:18:52,772 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-19 14:18:52,773 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-19 14:18:52,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:18:52,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1015805841, now seen corresponding path program 6 times [2021-11-19 14:18:52,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:18:52,774 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392726825] [2021-11-19 14:18:52,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:18:52,774 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:18:52,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:18:53,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:18:53,256 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:18:53,256 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392726825] [2021-11-19 14:18:53,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392726825] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:18:53,256 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:18:53,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-19 14:18:53,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482170428] [2021-11-19 14:18:53,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:18:53,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-19 14:18:53,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:18:53,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-19 14:18:53,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-11-19 14:18:53,258 INFO L87 Difference]: Start difference. First operand 2216 states and 5060 transitions. Second operand has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 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) [2021-11-19 14:18:56,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:18:56,730 INFO L93 Difference]: Finished difference Result 3508 states and 8025 transitions. [2021-11-19 14:18:56,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-19 14:18:56,730 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 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 [2021-11-19 14:18:56,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:18:56,735 INFO L225 Difference]: With dead ends: 3508 [2021-11-19 14:18:56,735 INFO L226 Difference]: Without dead ends: 3508 [2021-11-19 14:18:56,735 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=296, Invalid=826, Unknown=0, NotChecked=0, Total=1122 [2021-11-19 14:18:56,736 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 500 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 2994 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 500 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 3026 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 2994 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:18:56,736 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [500 Valid, 35 Invalid, 3026 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 2994 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-11-19 14:18:56,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3508 states. [2021-11-19 14:18:56,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3508 to 2216. [2021-11-19 14:18:56,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2216 states, 2206 states have (on average 2.2937443336355394) internal successors, (5060), 2215 states have internal predecessors, (5060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:18:56,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2216 states to 2216 states and 5060 transitions. [2021-11-19 14:18:56,768 INFO L78 Accepts]: Start accepts. Automaton has 2216 states and 5060 transitions. Word has length 17 [2021-11-19 14:18:56,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:18:56,769 INFO L470 AbstractCegarLoop]: Abstraction has 2216 states and 5060 transitions. [2021-11-19 14:18:56,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 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) [2021-11-19 14:18:56,769 INFO L276 IsEmpty]: Start isEmpty. Operand 2216 states and 5060 transitions. [2021-11-19 14:18:56,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-19 14:18:56,770 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:18:56,770 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:18:56,770 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-19 14:18:56,770 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-19 14:18:56,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:18:56,770 INFO L85 PathProgramCache]: Analyzing trace with hash 89765701, now seen corresponding path program 7 times [2021-11-19 14:18:56,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:18:56,770 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771830667] [2021-11-19 14:18:56,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:18:56,771 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:18:56,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:18:57,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:18:57,211 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:18:57,211 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771830667] [2021-11-19 14:18:57,211 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771830667] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:18:57,211 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:18:57,211 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-19 14:18:57,211 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639088172] [2021-11-19 14:18:57,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:18:57,211 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-19 14:18:57,212 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:18:57,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-19 14:18:57,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-11-19 14:18:57,212 INFO L87 Difference]: Start difference. First operand 2216 states and 5060 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) [2021-11-19 14:19:01,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:19:01,678 INFO L93 Difference]: Finished difference Result 3933 states and 8976 transitions. [2021-11-19 14:19:01,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-19 14:19:01,679 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 [2021-11-19 14:19:01,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:19:01,683 INFO L225 Difference]: With dead ends: 3933 [2021-11-19 14:19:01,683 INFO L226 Difference]: Without dead ends: 3933 [2021-11-19 14:19:01,684 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=457, Invalid=1265, Unknown=0, NotChecked=0, Total=1722 [2021-11-19 14:19:01,684 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 605 mSDsluCounter, 414 mSDsCounter, 0 mSdLazyCounter, 3585 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 605 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 3625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 3585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-11-19 14:19:01,685 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [605 Valid, 35 Invalid, 3625 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 3585 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-11-19 14:19:01,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3933 states. [2021-11-19 14:19:01,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3933 to 2238. [2021-11-19 14:19:01,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2238 states, 2228 states have (on average 2.2926391382405744) internal successors, (5108), 2237 states have internal predecessors, (5108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:19:01,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2238 states to 2238 states and 5108 transitions. [2021-11-19 14:19:01,721 INFO L78 Accepts]: Start accepts. Automaton has 2238 states and 5108 transitions. Word has length 17 [2021-11-19 14:19:01,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:19:01,721 INFO L470 AbstractCegarLoop]: Abstraction has 2238 states and 5108 transitions. [2021-11-19 14:19:01,721 INFO L471 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) [2021-11-19 14:19:01,721 INFO L276 IsEmpty]: Start isEmpty. Operand 2238 states and 5108 transitions. [2021-11-19 14:19:01,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-19 14:19:01,722 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:19:01,722 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:19:01,722 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-19 14:19:01,722 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-19 14:19:01,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:19:01,723 INFO L85 PathProgramCache]: Analyzing trace with hash -44418589, now seen corresponding path program 8 times [2021-11-19 14:19:01,723 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:19:01,723 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536006561] [2021-11-19 14:19:01,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:19:01,723 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:19:01,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:19:02,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:19:02,221 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:19:02,221 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536006561] [2021-11-19 14:19:02,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536006561] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:19:02,221 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:19:02,221 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-19 14:19:02,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387662390] [2021-11-19 14:19:02,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:19:02,222 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-19 14:19:02,222 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:19:02,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-19 14:19:02,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-19 14:19:02,223 INFO L87 Difference]: Start difference. First operand 2238 states and 5108 transitions. Second operand has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 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) [2021-11-19 14:19:07,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:19:07,076 INFO L93 Difference]: Finished difference Result 3295 states and 7487 transitions. [2021-11-19 14:19:07,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-19 14:19:07,076 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 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 [2021-11-19 14:19:07,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:19:07,080 INFO L225 Difference]: With dead ends: 3295 [2021-11-19 14:19:07,080 INFO L226 Difference]: Without dead ends: 3295 [2021-11-19 14:19:07,081 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=403, Invalid=1079, Unknown=0, NotChecked=0, Total=1482 [2021-11-19 14:19:07,081 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 471 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 3584 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 471 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 3615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 3584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-11-19 14:19:07,082 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [471 Valid, 35 Invalid, 3615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 3584 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-11-19 14:19:07,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3295 states. [2021-11-19 14:19:07,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3295 to 2238. [2021-11-19 14:19:07,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2238 states, 2228 states have (on average 2.2926391382405744) internal successors, (5108), 2237 states have internal predecessors, (5108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:19:07,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2238 states to 2238 states and 5108 transitions. [2021-11-19 14:19:07,134 INFO L78 Accepts]: Start accepts. Automaton has 2238 states and 5108 transitions. Word has length 17 [2021-11-19 14:19:07,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:19:07,134 INFO L470 AbstractCegarLoop]: Abstraction has 2238 states and 5108 transitions. [2021-11-19 14:19:07,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 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) [2021-11-19 14:19:07,134 INFO L276 IsEmpty]: Start isEmpty. Operand 2238 states and 5108 transitions. [2021-11-19 14:19:07,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-19 14:19:07,135 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:19:07,135 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:19:07,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-19 14:19:07,135 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-19 14:19:07,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:19:07,136 INFO L85 PathProgramCache]: Analyzing trace with hash -15267123, now seen corresponding path program 9 times [2021-11-19 14:19:07,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:19:07,136 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831070799] [2021-11-19 14:19:07,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:19:07,136 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:19:07,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:19:07,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:19:07,613 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:19:07,613 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831070799] [2021-11-19 14:19:07,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831070799] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:19:07,613 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:19:07,614 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-19 14:19:07,614 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130748283] [2021-11-19 14:19:07,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:19:07,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-19 14:19:07,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:19:07,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-19 14:19:07,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-11-19 14:19:07,615 INFO L87 Difference]: Start difference. First operand 2238 states and 5108 transitions. Second operand has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 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) [2021-11-19 14:19:11,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:19:11,224 INFO L93 Difference]: Finished difference Result 3767 states and 8607 transitions. [2021-11-19 14:19:11,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-19 14:19:11,224 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 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 [2021-11-19 14:19:11,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:19:11,229 INFO L225 Difference]: With dead ends: 3767 [2021-11-19 14:19:11,229 INFO L226 Difference]: Without dead ends: 3767 [2021-11-19 14:19:11,229 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=324, Invalid=866, Unknown=0, NotChecked=0, Total=1190 [2021-11-19 14:19:11,230 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 542 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 2751 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 542 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 2786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 2751 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:19:11,230 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [542 Valid, 35 Invalid, 2786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 2751 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-11-19 14:19:11,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3767 states. [2021-11-19 14:19:11,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3767 to 2238. [2021-11-19 14:19:11,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2238 states, 2228 states have (on average 2.2926391382405744) internal successors, (5108), 2237 states have internal predecessors, (5108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:19:11,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2238 states to 2238 states and 5108 transitions. [2021-11-19 14:19:11,265 INFO L78 Accepts]: Start accepts. Automaton has 2238 states and 5108 transitions. Word has length 17 [2021-11-19 14:19:11,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:19:11,265 INFO L470 AbstractCegarLoop]: Abstraction has 2238 states and 5108 transitions. [2021-11-19 14:19:11,265 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 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) [2021-11-19 14:19:11,265 INFO L276 IsEmpty]: Start isEmpty. Operand 2238 states and 5108 transitions. [2021-11-19 14:19:11,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-19 14:19:11,266 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:19:11,266 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:19:11,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-11-19 14:19:11,266 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-19 14:19:11,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:19:11,266 INFO L85 PathProgramCache]: Analyzing trace with hash -541902951, now seen corresponding path program 10 times [2021-11-19 14:19:11,267 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:19:11,267 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673447631] [2021-11-19 14:19:11,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:19:11,267 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:19:11,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:19:12,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:19:12,183 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:19:12,183 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673447631] [2021-11-19 14:19:12,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673447631] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:19:12,183 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:19:12,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-19 14:19:12,183 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110511438] [2021-11-19 14:19:12,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:19:12,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-19 14:19:12,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:19:12,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-19 14:19:12,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2021-11-19 14:19:12,185 INFO L87 Difference]: Start difference. First operand 2238 states and 5108 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) [2021-11-19 14:19:18,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:19:18,162 INFO L93 Difference]: Finished difference Result 4956 states and 11280 transitions. [2021-11-19 14:19:18,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-11-19 14:19:18,162 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 [2021-11-19 14:19:18,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:19:18,168 INFO L225 Difference]: With dead ends: 4956 [2021-11-19 14:19:18,168 INFO L226 Difference]: Without dead ends: 4956 [2021-11-19 14:19:18,169 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 320 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=446, Invalid=1360, Unknown=0, NotChecked=0, Total=1806 [2021-11-19 14:19:18,169 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 644 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 3165 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 644 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 3228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 3165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:19:18,169 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [644 Valid, 34 Invalid, 3228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 3165 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2021-11-19 14:19:18,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4956 states. [2021-11-19 14:19:18,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4956 to 2241. [2021-11-19 14:19:18,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2241 states, 2231 states have (on average 2.292693859255939) internal successors, (5115), 2240 states have internal predecessors, (5115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:19:18,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2241 states to 2241 states and 5115 transitions. [2021-11-19 14:19:18,210 INFO L78 Accepts]: Start accepts. Automaton has 2241 states and 5115 transitions. Word has length 17 [2021-11-19 14:19:18,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:19:18,210 INFO L470 AbstractCegarLoop]: Abstraction has 2241 states and 5115 transitions. [2021-11-19 14:19:18,210 INFO L471 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) [2021-11-19 14:19:18,210 INFO L276 IsEmpty]: Start isEmpty. Operand 2241 states and 5115 transitions. [2021-11-19 14:19:18,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-19 14:19:18,211 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:19:18,211 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:19:18,212 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-11-19 14:19:18,212 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-19 14:19:18,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:19:18,212 INFO L85 PathProgramCache]: Analyzing trace with hash -1839446473, now seen corresponding path program 11 times [2021-11-19 14:19:18,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:19:18,213 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889459499] [2021-11-19 14:19:18,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:19:18,213 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:19:18,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:19:18,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:19:18,705 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:19:18,705 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889459499] [2021-11-19 14:19:18,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889459499] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:19:18,705 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:19:18,705 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-19 14:19:18,705 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072716220] [2021-11-19 14:19:18,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:19:18,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-19 14:19:18,706 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:19:18,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-19 14:19:18,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2021-11-19 14:19:18,707 INFO L87 Difference]: Start difference. First operand 2241 states and 5115 transitions. Second operand has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 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) [2021-11-19 14:19:22,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:19:22,164 INFO L93 Difference]: Finished difference Result 3901 states and 8879 transitions. [2021-11-19 14:19:22,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-19 14:19:22,164 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 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 [2021-11-19 14:19:22,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:19:22,169 INFO L225 Difference]: With dead ends: 3901 [2021-11-19 14:19:22,169 INFO L226 Difference]: Without dead ends: 3901 [2021-11-19 14:19:22,170 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=261, Invalid=669, Unknown=0, NotChecked=0, Total=930 [2021-11-19 14:19:22,170 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 479 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 2964 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 479 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 2987 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 2964 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:19:22,171 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [479 Valid, 35 Invalid, 2987 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 2964 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-11-19 14:19:22,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3901 states. [2021-11-19 14:19:22,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3901 to 2147. [2021-11-19 14:19:22,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2147 states, 2137 states have (on average 2.2826392138511933) internal successors, (4878), 2146 states have internal predecessors, (4878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:19:22,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2147 states to 2147 states and 4878 transitions. [2021-11-19 14:19:22,207 INFO L78 Accepts]: Start accepts. Automaton has 2147 states and 4878 transitions. Word has length 17 [2021-11-19 14:19:22,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:19:22,208 INFO L470 AbstractCegarLoop]: Abstraction has 2147 states and 4878 transitions. [2021-11-19 14:19:22,208 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 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) [2021-11-19 14:19:22,208 INFO L276 IsEmpty]: Start isEmpty. Operand 2147 states and 4878 transitions. [2021-11-19 14:19:22,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-19 14:19:22,209 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:19:22,209 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:19:22,209 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-11-19 14:19:22,209 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-19 14:19:22,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:19:22,209 INFO L85 PathProgramCache]: Analyzing trace with hash -306874337, now seen corresponding path program 1 times [2021-11-19 14:19:22,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:19:22,210 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061418350] [2021-11-19 14:19:22,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:19:22,210 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:19:22,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:19:22,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:19:22,517 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:19:22,518 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061418350] [2021-11-19 14:19:22,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061418350] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:19:22,518 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:19:22,518 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-19 14:19:22,518 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253439615] [2021-11-19 14:19:22,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:19:22,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-19 14:19:22,518 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:19:22,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-19 14:19:22,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-11-19 14:19:22,519 INFO L87 Difference]: Start difference. First operand 2147 states and 4878 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) [2021-11-19 14:19:24,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:19:24,650 INFO L93 Difference]: Finished difference Result 3006 states and 6724 transitions. [2021-11-19 14:19:24,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-19 14:19:24,650 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 [2021-11-19 14:19:24,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:19:24,654 INFO L225 Difference]: With dead ends: 3006 [2021-11-19 14:19:24,654 INFO L226 Difference]: Without dead ends: 3006 [2021-11-19 14:19:24,654 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=178, Invalid=422, Unknown=0, NotChecked=0, Total=600 [2021-11-19 14:19:24,655 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 398 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 1499 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 398 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 1561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-19 14:19:24,655 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [398 Valid, 17 Invalid, 1561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1499 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-19 14:19:24,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3006 states. [2021-11-19 14:19:24,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3006 to 2247. [2021-11-19 14:19:24,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2247 states, 2237 states have (on average 2.282074206526598) internal successors, (5105), 2246 states have internal predecessors, (5105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:19:24,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2247 states to 2247 states and 5105 transitions. [2021-11-19 14:19:24,692 INFO L78 Accepts]: Start accepts. Automaton has 2247 states and 5105 transitions. Word has length 18 [2021-11-19 14:19:24,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:19:24,692 INFO L470 AbstractCegarLoop]: Abstraction has 2247 states and 5105 transitions. [2021-11-19 14:19:24,692 INFO L471 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) [2021-11-19 14:19:24,692 INFO L276 IsEmpty]: Start isEmpty. Operand 2247 states and 5105 transitions. [2021-11-19 14:19:24,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-19 14:19:24,693 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:19:24,693 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:19:24,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-11-19 14:19:24,694 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-19 14:19:24,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:19:24,694 INFO L85 PathProgramCache]: Analyzing trace with hash -509289767, now seen corresponding path program 2 times [2021-11-19 14:19:24,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:19:24,695 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859385917] [2021-11-19 14:19:24,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:19:24,695 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:19:24,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:19:25,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:19:25,019 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:19:25,019 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859385917] [2021-11-19 14:19:25,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859385917] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:19:25,020 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:19:25,020 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-19 14:19:25,020 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527904515] [2021-11-19 14:19:25,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:19:25,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-19 14:19:25,020 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:19:25,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-19 14:19:25,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2021-11-19 14:19:25,021 INFO L87 Difference]: Start difference. First operand 2247 states and 5105 transitions. Second operand has 17 states, 16 states have (on average 1.125) internal successors, (18), 16 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) [2021-11-19 14:19:28,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:19:28,108 INFO L93 Difference]: Finished difference Result 3447 states and 7699 transitions. [2021-11-19 14:19:28,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-19 14:19:28,108 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.125) internal successors, (18), 16 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 [2021-11-19 14:19:28,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:19:28,112 INFO L225 Difference]: With dead ends: 3447 [2021-11-19 14:19:28,113 INFO L226 Difference]: Without dead ends: 3447 [2021-11-19 14:19:28,113 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=526, Invalid=1196, Unknown=0, NotChecked=0, Total=1722 [2021-11-19 14:19:28,114 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 627 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 2668 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 627 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 2760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 2668 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-11-19 14:19:28,114 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [627 Valid, 34 Invalid, 2760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 2668 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-11-19 14:19:28,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3447 states. [2021-11-19 14:19:28,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3447 to 2353. [2021-11-19 14:19:28,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2353 states, 2343 states have (on average 2.2842509603072982) internal successors, (5352), 2352 states have internal predecessors, (5352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:19:28,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2353 states to 2353 states and 5352 transitions. [2021-11-19 14:19:28,152 INFO L78 Accepts]: Start accepts. Automaton has 2353 states and 5352 transitions. Word has length 18 [2021-11-19 14:19:28,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:19:28,153 INFO L470 AbstractCegarLoop]: Abstraction has 2353 states and 5352 transitions. [2021-11-19 14:19:28,153 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.125) internal successors, (18), 16 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) [2021-11-19 14:19:28,153 INFO L276 IsEmpty]: Start isEmpty. Operand 2353 states and 5352 transitions. [2021-11-19 14:19:28,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-19 14:19:28,154 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:19:28,154 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:19:28,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-11-19 14:19:28,154 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-19 14:19:28,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:19:28,154 INFO L85 PathProgramCache]: Analyzing trace with hash -256155843, now seen corresponding path program 3 times [2021-11-19 14:19:28,154 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:19:28,155 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081916657] [2021-11-19 14:19:28,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:19:28,155 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:19:28,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:19:28,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:19:28,479 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:19:28,479 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081916657] [2021-11-19 14:19:28,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081916657] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:19:28,479 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:19:28,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-19 14:19:28,479 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470264871] [2021-11-19 14:19:28,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:19:28,479 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-19 14:19:28,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:19:28,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-19 14:19:28,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-11-19 14:19:28,480 INFO L87 Difference]: Start difference. First operand 2353 states and 5352 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) [2021-11-19 14:19:30,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:19:30,667 INFO L93 Difference]: Finished difference Result 3370 states and 7516 transitions. [2021-11-19 14:19:30,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-19 14:19:30,668 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 [2021-11-19 14:19:30,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:19:30,672 INFO L225 Difference]: With dead ends: 3370 [2021-11-19 14:19:30,672 INFO L226 Difference]: Without dead ends: 3370 [2021-11-19 14:19:30,673 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=224, Invalid=478, Unknown=0, NotChecked=0, Total=702 [2021-11-19 14:19:30,674 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 939 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 1349 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 939 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 1419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-19 14:19:30,689 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [939 Valid, 17 Invalid, 1419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 1349 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-19 14:19:30,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3370 states. [2021-11-19 14:19:30,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3370 to 2273. [2021-11-19 14:19:30,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2273 states, 2263 states have (on average 2.280159080866107) internal successors, (5160), 2272 states have internal predecessors, (5160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:19:30,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2273 states to 2273 states and 5160 transitions. [2021-11-19 14:19:30,726 INFO L78 Accepts]: Start accepts. Automaton has 2273 states and 5160 transitions. Word has length 18 [2021-11-19 14:19:30,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:19:30,727 INFO L470 AbstractCegarLoop]: Abstraction has 2273 states and 5160 transitions. [2021-11-19 14:19:30,727 INFO L471 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) [2021-11-19 14:19:30,727 INFO L276 IsEmpty]: Start isEmpty. Operand 2273 states and 5160 transitions. [2021-11-19 14:19:30,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-19 14:19:30,728 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:19:30,728 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:19:30,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-11-19 14:19:30,729 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-19 14:19:30,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:19:30,729 INFO L85 PathProgramCache]: Analyzing trace with hash -458571273, now seen corresponding path program 4 times [2021-11-19 14:19:30,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:19:30,729 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843652851] [2021-11-19 14:19:30,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:19:30,730 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:19:30,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:19:31,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:19:31,002 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:19:31,002 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843652851] [2021-11-19 14:19:31,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843652851] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:19:31,002 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:19:31,002 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-19 14:19:31,002 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475363517] [2021-11-19 14:19:31,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:19:31,003 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-19 14:19:31,003 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:19:31,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-19 14:19:31,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2021-11-19 14:19:31,003 INFO L87 Difference]: Start difference. First operand 2273 states and 5160 transitions. Second operand has 17 states, 16 states have (on average 1.125) internal successors, (18), 16 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) [2021-11-19 14:19:34,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:19:34,207 INFO L93 Difference]: Finished difference Result 3517 states and 7849 transitions. [2021-11-19 14:19:34,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-11-19 14:19:34,208 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.125) internal successors, (18), 16 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 [2021-11-19 14:19:34,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:19:34,213 INFO L225 Difference]: With dead ends: 3517 [2021-11-19 14:19:34,213 INFO L226 Difference]: Without dead ends: 3517 [2021-11-19 14:19:34,214 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=666, Invalid=1590, Unknown=0, NotChecked=0, Total=2256 [2021-11-19 14:19:34,214 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 827 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 2472 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 827 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 2573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 2472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-11-19 14:19:34,214 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [827 Valid, 34 Invalid, 2573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 2472 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-11-19 14:19:34,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3517 states. [2021-11-19 14:19:34,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3517 to 2245. [2021-11-19 14:19:34,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2245 states, 2235 states have (on average 2.280089485458613) internal successors, (5096), 2244 states have internal predecessors, (5096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:19:34,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2245 states to 2245 states and 5096 transitions. [2021-11-19 14:19:34,253 INFO L78 Accepts]: Start accepts. Automaton has 2245 states and 5096 transitions. Word has length 18 [2021-11-19 14:19:34,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:19:34,253 INFO L470 AbstractCegarLoop]: Abstraction has 2245 states and 5096 transitions. [2021-11-19 14:19:34,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.125) internal successors, (18), 16 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) [2021-11-19 14:19:34,253 INFO L276 IsEmpty]: Start isEmpty. Operand 2245 states and 5096 transitions. [2021-11-19 14:19:34,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-19 14:19:34,254 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:19:34,254 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:19:34,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-11-19 14:19:34,255 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-19 14:19:34,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:19:34,255 INFO L85 PathProgramCache]: Analyzing trace with hash -1151511107, now seen corresponding path program 5 times [2021-11-19 14:19:34,255 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:19:34,255 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804794098] [2021-11-19 14:19:34,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:19:34,256 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:19:34,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:19:34,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:19:34,564 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:19:34,564 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804794098] [2021-11-19 14:19:34,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804794098] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:19:34,564 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:19:34,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-19 14:19:34,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948952793] [2021-11-19 14:19:34,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:19:34,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-19 14:19:34,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:19:34,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-19 14:19:34,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2021-11-19 14:19:34,565 INFO L87 Difference]: Start difference. First operand 2245 states and 5096 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) [2021-11-19 14:19:38,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:19:38,087 INFO L93 Difference]: Finished difference Result 3407 states and 7609 transitions. [2021-11-19 14:19:38,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-11-19 14:19:38,087 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 [2021-11-19 14:19:38,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:19:38,091 INFO L225 Difference]: With dead ends: 3407 [2021-11-19 14:19:38,091 INFO L226 Difference]: Without dead ends: 3407 [2021-11-19 14:19:38,094 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=698, Invalid=1654, Unknown=0, NotChecked=0, Total=2352 [2021-11-19 14:19:38,095 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 944 mSDsluCounter, 330 mSDsCounter, 0 mSdLazyCounter, 2824 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 944 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 2934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 2824 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:19:38,095 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [944 Valid, 34 Invalid, 2934 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 2824 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-11-19 14:19:38,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3407 states. [2021-11-19 14:19:38,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3407 to 2229. [2021-11-19 14:19:38,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2229 states, 2219 states have (on average 2.280757097791798) internal successors, (5061), 2228 states have internal predecessors, (5061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:19:38,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2229 states to 2229 states and 5061 transitions. [2021-11-19 14:19:38,134 INFO L78 Accepts]: Start accepts. Automaton has 2229 states and 5061 transitions. Word has length 18 [2021-11-19 14:19:38,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:19:38,135 INFO L470 AbstractCegarLoop]: Abstraction has 2229 states and 5061 transitions. [2021-11-19 14:19:38,135 INFO L471 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) [2021-11-19 14:19:38,135 INFO L276 IsEmpty]: Start isEmpty. Operand 2229 states and 5061 transitions. [2021-11-19 14:19:38,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-19 14:19:38,136 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:19:38,137 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:19:38,137 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-11-19 14:19:38,137 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-19 14:19:38,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:19:38,138 INFO L85 PathProgramCache]: Analyzing trace with hash -1322906576, now seen corresponding path program 1 times [2021-11-19 14:19:38,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:19:38,138 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702066795] [2021-11-19 14:19:38,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:19:38,138 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:19:38,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:19:38,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:19:38,393 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:19:38,393 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702066795] [2021-11-19 14:19:38,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702066795] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:19:38,410 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:19:38,410 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-19 14:19:38,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932785605] [2021-11-19 14:19:38,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:19:38,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-19 14:19:38,411 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:19:38,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-19 14:19:38,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2021-11-19 14:19:38,411 INFO L87 Difference]: Start difference. First operand 2229 states and 5061 transitions. Second operand has 13 states, 12 states have (on average 1.5) internal successors, (18), 13 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) [2021-11-19 14:19:41,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:19:41,723 INFO L93 Difference]: Finished difference Result 4440 states and 10020 transitions. [2021-11-19 14:19:41,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-19 14:19:41,723 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.5) internal successors, (18), 13 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 [2021-11-19 14:19:41,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:19:41,729 INFO L225 Difference]: With dead ends: 4440 [2021-11-19 14:19:41,729 INFO L226 Difference]: Without dead ends: 4440 [2021-11-19 14:19:41,729 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=169, Invalid=587, Unknown=0, NotChecked=0, Total=756 [2021-11-19 14:19:41,730 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 523 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 3654 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 523 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 3694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 3654 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-11-19 14:19:41,730 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [523 Valid, 54 Invalid, 3694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 3654 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-11-19 14:19:41,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4440 states. [2021-11-19 14:19:41,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4440 to 2524. [2021-11-19 14:19:41,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2524 states, 2514 states have (on average 2.290373906125696) internal successors, (5758), 2523 states have internal predecessors, (5758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:19:41,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2524 states to 2524 states and 5758 transitions. [2021-11-19 14:19:41,771 INFO L78 Accepts]: Start accepts. Automaton has 2524 states and 5758 transitions. Word has length 18 [2021-11-19 14:19:41,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:19:41,771 INFO L470 AbstractCegarLoop]: Abstraction has 2524 states and 5758 transitions. [2021-11-19 14:19:41,771 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.5) internal successors, (18), 13 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) [2021-11-19 14:19:41,771 INFO L276 IsEmpty]: Start isEmpty. Operand 2524 states and 5758 transitions. [2021-11-19 14:19:41,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-19 14:19:41,773 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:19:41,773 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:19:41,773 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-11-19 14:19:41,773 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-19 14:19:41,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:19:41,774 INFO L85 PathProgramCache]: Analyzing trace with hash -1295237775, now seen corresponding path program 6 times [2021-11-19 14:19:41,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:19:41,774 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300947977] [2021-11-19 14:19:41,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:19:41,774 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:19:41,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:19:42,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:19:42,043 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:19:42,043 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300947977] [2021-11-19 14:19:42,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300947977] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:19:42,043 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:19:42,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-19 14:19:42,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360761859] [2021-11-19 14:19:42,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:19:42,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-19 14:19:42,044 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:19:42,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-19 14:19:42,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-11-19 14:19:42,044 INFO L87 Difference]: Start difference. First operand 2524 states and 5758 transitions. Second operand has 12 states, 12 states have (on average 1.5) internal successors, (18), 11 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) [2021-11-19 14:19:44,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:19:44,745 INFO L93 Difference]: Finished difference Result 3071 states and 6923 transitions. [2021-11-19 14:19:44,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-19 14:19:44,746 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.5) internal successors, (18), 11 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 [2021-11-19 14:19:44,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:19:44,752 INFO L225 Difference]: With dead ends: 3071 [2021-11-19 14:19:44,752 INFO L226 Difference]: Without dead ends: 3071 [2021-11-19 14:19:44,752 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=238, Invalid=574, Unknown=0, NotChecked=0, Total=812 [2021-11-19 14:19:44,753 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 622 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 2196 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 622 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 2239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 2196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:19:44,753 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [622 Valid, 16 Invalid, 2239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 2196 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-11-19 14:19:44,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3071 states. [2021-11-19 14:19:44,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3071 to 2558. [2021-11-19 14:19:44,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2558 states, 2548 states have (on average 2.2892464678178963) internal successors, (5833), 2557 states have internal predecessors, (5833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:19:44,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2558 states to 2558 states and 5833 transitions. [2021-11-19 14:19:44,821 INFO L78 Accepts]: Start accepts. Automaton has 2558 states and 5833 transitions. Word has length 18 [2021-11-19 14:19:44,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:19:44,822 INFO L470 AbstractCegarLoop]: Abstraction has 2558 states and 5833 transitions. [2021-11-19 14:19:44,822 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.5) internal successors, (18), 11 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) [2021-11-19 14:19:44,822 INFO L276 IsEmpty]: Start isEmpty. Operand 2558 states and 5833 transitions. [2021-11-19 14:19:44,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-19 14:19:44,824 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:19:44,824 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:19:44,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-11-19 14:19:44,825 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-19 14:19:44,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:19:44,826 INFO L85 PathProgramCache]: Analyzing trace with hash -1497653205, now seen corresponding path program 7 times [2021-11-19 14:19:44,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:19:44,826 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323002099] [2021-11-19 14:19:44,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:19:44,827 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:19:44,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:19:45,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:19:45,120 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:19:45,121 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323002099] [2021-11-19 14:19:45,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323002099] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:19:45,121 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:19:45,121 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-19 14:19:45,121 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843133965] [2021-11-19 14:19:45,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:19:45,121 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-19 14:19:45,122 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:19:45,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-19 14:19:45,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2021-11-19 14:19:45,122 INFO L87 Difference]: Start difference. First operand 2558 states and 5833 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) [2021-11-19 14:19:48,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:19:48,787 INFO L93 Difference]: Finished difference Result 3233 states and 7274 transitions. [2021-11-19 14:19:48,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-11-19 14:19:48,787 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 [2021-11-19 14:19:48,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:19:48,792 INFO L225 Difference]: With dead ends: 3233 [2021-11-19 14:19:48,792 INFO L226 Difference]: Without dead ends: 3233 [2021-11-19 14:19:48,792 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 431 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=502, Invalid=1754, Unknown=0, NotChecked=0, Total=2256 [2021-11-19 14:19:48,793 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 622 mSDsluCounter, 414 mSDsCounter, 0 mSdLazyCounter, 4250 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 622 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 4300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 4250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-11-19 14:19:48,793 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [622 Valid, 32 Invalid, 4300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 4250 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-11-19 14:19:48,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3233 states. [2021-11-19 14:19:48,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3233 to 2514. [2021-11-19 14:19:48,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2514 states, 2504 states have (on average 2.2895367412140577) internal successors, (5733), 2513 states have internal predecessors, (5733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:19:48,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2514 states to 2514 states and 5733 transitions. [2021-11-19 14:19:48,831 INFO L78 Accepts]: Start accepts. Automaton has 2514 states and 5733 transitions. Word has length 18 [2021-11-19 14:19:48,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:19:48,831 INFO L470 AbstractCegarLoop]: Abstraction has 2514 states and 5733 transitions. [2021-11-19 14:19:48,832 INFO L471 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) [2021-11-19 14:19:48,832 INFO L276 IsEmpty]: Start isEmpty. Operand 2514 states and 5733 transitions. [2021-11-19 14:19:48,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-19 14:19:48,833 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:19:48,834 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:19:48,834 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-11-19 14:19:48,834 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-19 14:19:48,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:19:48,835 INFO L85 PathProgramCache]: Analyzing trace with hash 2104374257, now seen corresponding path program 8 times [2021-11-19 14:19:48,835 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:19:48,835 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904541435] [2021-11-19 14:19:48,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:19:48,835 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:19:48,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:19:49,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:19:49,103 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:19:49,103 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904541435] [2021-11-19 14:19:49,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904541435] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:19:49,103 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:19:49,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-19 14:19:49,103 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632770043] [2021-11-19 14:19:49,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:19:49,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-19 14:19:49,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:19:49,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-19 14:19:49,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2021-11-19 14:19:49,104 INFO L87 Difference]: Start difference. First operand 2514 states and 5733 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) [2021-11-19 14:19:52,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:19:52,327 INFO L93 Difference]: Finished difference Result 3260 states and 7339 transitions. [2021-11-19 14:19:52,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-11-19 14:19:52,327 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 [2021-11-19 14:19:52,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:19:52,331 INFO L225 Difference]: With dead ends: 3260 [2021-11-19 14:19:52,331 INFO L226 Difference]: Without dead ends: 3260 [2021-11-19 14:19:52,332 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 431 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=504, Invalid=1752, Unknown=0, NotChecked=0, Total=2256 [2021-11-19 14:19:52,333 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 818 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 3141 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 818 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 3197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 3141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:19:52,333 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [818 Valid, 32 Invalid, 3197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 3141 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-11-19 14:19:52,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3260 states. [2021-11-19 14:19:52,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3260 to 2503. [2021-11-19 14:19:52,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2503 states, 2493 states have (on average 2.2904131568391497) internal successors, (5710), 2502 states have internal predecessors, (5710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:19:52,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2503 states to 2503 states and 5710 transitions. [2021-11-19 14:19:52,367 INFO L78 Accepts]: Start accepts. Automaton has 2503 states and 5710 transitions. Word has length 18 [2021-11-19 14:19:52,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:19:52,368 INFO L470 AbstractCegarLoop]: Abstraction has 2503 states and 5710 transitions. [2021-11-19 14:19:52,368 INFO L471 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) [2021-11-19 14:19:52,368 INFO L276 IsEmpty]: Start isEmpty. Operand 2503 states and 5710 transitions. [2021-11-19 14:19:52,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-19 14:19:52,369 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:19:52,369 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:19:52,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-11-19 14:19:52,370 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-19 14:19:52,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:19:52,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1786150869, now seen corresponding path program 9 times [2021-11-19 14:19:52,370 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:19:52,371 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697853836] [2021-11-19 14:19:52,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:19:52,371 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:19:52,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:19:52,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:19:52,630 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:19:52,630 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697853836] [2021-11-19 14:19:52,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697853836] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:19:52,630 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:19:52,630 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-19 14:19:52,630 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675421040] [2021-11-19 14:19:52,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:19:52,631 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-19 14:19:52,631 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:19:52,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-19 14:19:52,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-11-19 14:19:52,631 INFO L87 Difference]: Start difference. First operand 2503 states and 5710 transitions. Second operand has 12 states, 12 states have (on average 1.5) internal successors, (18), 11 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) [2021-11-19 14:19:54,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:19:54,837 INFO L93 Difference]: Finished difference Result 3045 states and 6869 transitions. [2021-11-19 14:19:54,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-19 14:19:54,838 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.5) internal successors, (18), 11 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 [2021-11-19 14:19:54,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:19:54,841 INFO L225 Difference]: With dead ends: 3045 [2021-11-19 14:19:54,842 INFO L226 Difference]: Without dead ends: 3045 [2021-11-19 14:19:54,842 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=210, Invalid=440, Unknown=0, NotChecked=0, Total=650 [2021-11-19 14:19:54,842 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 535 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 1840 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 535 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 1876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1840 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-11-19 14:19:54,842 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [535 Valid, 16 Invalid, 1876 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1840 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-11-19 14:19:54,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3045 states. [2021-11-19 14:19:54,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3045 to 2527. [2021-11-19 14:19:54,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2527 states, 2517 states have (on average 2.2888359157727454) internal successors, (5761), 2526 states have internal predecessors, (5761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:19:54,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2527 states to 2527 states and 5761 transitions. [2021-11-19 14:19:54,876 INFO L78 Accepts]: Start accepts. Automaton has 2527 states and 5761 transitions. Word has length 18 [2021-11-19 14:19:54,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:19:54,876 INFO L470 AbstractCegarLoop]: Abstraction has 2527 states and 5761 transitions. [2021-11-19 14:19:54,877 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.5) internal successors, (18), 11 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) [2021-11-19 14:19:54,877 INFO L276 IsEmpty]: Start isEmpty. Operand 2527 states and 5761 transitions. [2021-11-19 14:19:54,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-19 14:19:54,878 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:19:54,878 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:19:54,878 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-11-19 14:19:54,878 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-19 14:19:54,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:19:54,879 INFO L85 PathProgramCache]: Analyzing trace with hash -1988566299, now seen corresponding path program 10 times [2021-11-19 14:19:54,879 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:19:54,879 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125036654] [2021-11-19 14:19:54,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:19:54,879 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:19:54,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:19:55,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:19:55,167 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:19:55,167 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125036654] [2021-11-19 14:19:55,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125036654] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:19:55,168 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:19:55,168 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-19 14:19:55,168 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258291110] [2021-11-19 14:19:55,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:19:55,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-19 14:19:55,168 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:19:55,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-19 14:19:55,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2021-11-19 14:19:55,169 INFO L87 Difference]: Start difference. First operand 2527 states and 5761 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) [2021-11-19 14:19:58,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:19:58,654 INFO L93 Difference]: Finished difference Result 3238 states and 7284 transitions. [2021-11-19 14:19:58,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-11-19 14:19:58,654 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 [2021-11-19 14:19:58,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:19:58,658 INFO L225 Difference]: With dead ends: 3238 [2021-11-19 14:19:58,658 INFO L226 Difference]: Without dead ends: 3238 [2021-11-19 14:19:58,659 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=524, Invalid=1368, Unknown=0, NotChecked=0, Total=1892 [2021-11-19 14:19:58,659 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 626 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 4018 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 626 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 4061 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 4018 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-19 14:19:58,659 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [626 Valid, 32 Invalid, 4061 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 4018 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-11-19 14:19:58,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3238 states. [2021-11-19 14:19:58,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3238 to 2521. [2021-11-19 14:19:58,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2521 states, 2511 states have (on average 2.2891278375149344) internal successors, (5748), 2520 states have internal predecessors, (5748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:19:58,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2521 states to 2521 states and 5748 transitions. [2021-11-19 14:19:58,694 INFO L78 Accepts]: Start accepts. Automaton has 2521 states and 5748 transitions. Word has length 18 [2021-11-19 14:19:58,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:19:58,694 INFO L470 AbstractCegarLoop]: Abstraction has 2521 states and 5748 transitions. [2021-11-19 14:19:58,694 INFO L471 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) [2021-11-19 14:19:58,694 INFO L276 IsEmpty]: Start isEmpty. Operand 2521 states and 5748 transitions. [2021-11-19 14:19:58,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-19 14:19:58,695 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:19:58,695 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:19:58,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-11-19 14:19:58,696 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-19 14:19:58,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:19:58,696 INFO L85 PathProgramCache]: Analyzing trace with hash 1613461163, now seen corresponding path program 11 times [2021-11-19 14:19:58,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:19:58,696 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662805767] [2021-11-19 14:19:58,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:19:58,696 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:19:58,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:19:58,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:19:58,949 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:19:58,949 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662805767] [2021-11-19 14:19:58,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662805767] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:19:58,950 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:19:58,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-19 14:19:58,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469516067] [2021-11-19 14:19:58,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:19:58,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-19 14:19:58,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:19:58,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-19 14:19:58,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2021-11-19 14:19:58,951 INFO L87 Difference]: Start difference. First operand 2521 states and 5748 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) [2021-11-19 14:20:02,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:20:02,551 INFO L93 Difference]: Finished difference Result 3300 states and 7422 transitions. [2021-11-19 14:20:02,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-11-19 14:20:02,551 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 [2021-11-19 14:20:02,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:20:02,555 INFO L225 Difference]: With dead ends: 3300 [2021-11-19 14:20:02,555 INFO L226 Difference]: Without dead ends: 3300 [2021-11-19 14:20:02,556 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=540, Invalid=1352, Unknown=0, NotChecked=0, Total=1892 [2021-11-19 14:20:02,556 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 615 mSDsluCounter, 408 mSDsCounter, 0 mSdLazyCounter, 4081 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 615 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 4121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 4081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-11-19 14:20:02,557 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [615 Valid, 32 Invalid, 4121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 4081 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-11-19 14:20:02,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3300 states. [2021-11-19 14:20:02,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3300 to 2520. [2021-11-19 14:20:02,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2520 states, 2510 states have (on average 2.289243027888446) internal successors, (5746), 2519 states have internal predecessors, (5746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:20:02,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2520 states to 2520 states and 5746 transitions. [2021-11-19 14:20:02,600 INFO L78 Accepts]: Start accepts. Automaton has 2520 states and 5746 transitions. Word has length 18 [2021-11-19 14:20:02,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:20:02,600 INFO L470 AbstractCegarLoop]: Abstraction has 2520 states and 5746 transitions. [2021-11-19 14:20:02,601 INFO L471 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) [2021-11-19 14:20:02,601 INFO L276 IsEmpty]: Start isEmpty. Operand 2520 states and 5746 transitions. [2021-11-19 14:20:02,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-19 14:20:02,602 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:20:02,603 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:20:02,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-11-19 14:20:02,603 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-19 14:20:02,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:20:02,603 INFO L85 PathProgramCache]: Analyzing trace with hash -441864539, now seen corresponding path program 12 times [2021-11-19 14:20:02,604 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:20:02,604 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675514458] [2021-11-19 14:20:02,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:20:02,604 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:20:02,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:20:02,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:20:02,838 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:20:02,839 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675514458] [2021-11-19 14:20:02,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675514458] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:20:02,839 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:20:02,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-19 14:20:02,839 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120396624] [2021-11-19 14:20:02,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:20:02,839 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-19 14:20:02,839 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:20:02,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-19 14:20:02,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2021-11-19 14:20:02,840 INFO L87 Difference]: Start difference. First operand 2520 states and 5746 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) [2021-11-19 14:20:06,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:20:06,296 INFO L93 Difference]: Finished difference Result 3322 states and 7469 transitions. [2021-11-19 14:20:06,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-11-19 14:20:06,297 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 [2021-11-19 14:20:06,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:20:06,301 INFO L225 Difference]: With dead ends: 3322 [2021-11-19 14:20:06,301 INFO L226 Difference]: Without dead ends: 3322 [2021-11-19 14:20:06,301 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 267 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=618, Invalid=1452, Unknown=0, NotChecked=0, Total=2070 [2021-11-19 14:20:06,302 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 773 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 3587 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 773 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 3628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 3587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:20:06,302 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [773 Valid, 32 Invalid, 3628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 3587 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-11-19 14:20:06,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3322 states. [2021-11-19 14:20:06,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3322 to 2524. [2021-11-19 14:20:06,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2524 states, 2514 states have (on average 2.288782816229117) internal successors, (5754), 2523 states have internal predecessors, (5754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:20:06,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2524 states to 2524 states and 5754 transitions. [2021-11-19 14:20:06,337 INFO L78 Accepts]: Start accepts. Automaton has 2524 states and 5754 transitions. Word has length 18 [2021-11-19 14:20:06,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:20:06,337 INFO L470 AbstractCegarLoop]: Abstraction has 2524 states and 5754 transitions. [2021-11-19 14:20:06,337 INFO L471 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) [2021-11-19 14:20:06,337 INFO L276 IsEmpty]: Start isEmpty. Operand 2524 states and 5754 transitions. [2021-11-19 14:20:06,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-19 14:20:06,338 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:20:06,338 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:20:06,338 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-11-19 14:20:06,338 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-19 14:20:06,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:20:06,339 INFO L85 PathProgramCache]: Analyzing trace with hash -1800629701, now seen corresponding path program 13 times [2021-11-19 14:20:06,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:20:06,339 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22862477] [2021-11-19 14:20:06,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:20:06,340 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:20:06,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:20:06,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:20:06,590 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:20:06,590 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22862477] [2021-11-19 14:20:06,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22862477] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:20:06,590 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:20:06,590 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-19 14:20:06,590 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134270741] [2021-11-19 14:20:06,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:20:06,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-19 14:20:06,591 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:20:06,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-19 14:20:06,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2021-11-19 14:20:06,591 INFO L87 Difference]: Start difference. First operand 2524 states and 5754 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) [2021-11-19 14:20:11,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:20:11,258 INFO L93 Difference]: Finished difference Result 3411 states and 7663 transitions. [2021-11-19 14:20:11,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-11-19 14:20:11,259 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 [2021-11-19 14:20:11,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:20:11,265 INFO L225 Difference]: With dead ends: 3411 [2021-11-19 14:20:11,265 INFO L226 Difference]: Without dead ends: 3411 [2021-11-19 14:20:11,266 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=688, Invalid=1664, Unknown=0, NotChecked=0, Total=2352 [2021-11-19 14:20:11,266 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 687 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 4924 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 687 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 4962 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 4924 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:20:11,267 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [687 Valid, 32 Invalid, 4962 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 4924 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2021-11-19 14:20:11,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3411 states. [2021-11-19 14:20:11,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3411 to 2517. [2021-11-19 14:20:11,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2517 states, 2507 states have (on average 2.289190267251695) internal successors, (5739), 2516 states have internal predecessors, (5739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:20:11,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2517 states to 2517 states and 5739 transitions. [2021-11-19 14:20:11,304 INFO L78 Accepts]: Start accepts. Automaton has 2517 states and 5739 transitions. Word has length 18 [2021-11-19 14:20:11,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:20:11,304 INFO L470 AbstractCegarLoop]: Abstraction has 2517 states and 5739 transitions. [2021-11-19 14:20:11,304 INFO L471 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) [2021-11-19 14:20:11,304 INFO L276 IsEmpty]: Start isEmpty. Operand 2517 states and 5739 transitions. [2021-11-19 14:20:11,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-19 14:20:11,305 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:20:11,305 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:20:11,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-11-19 14:20:11,305 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-19 14:20:11,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:20:11,306 INFO L85 PathProgramCache]: Analyzing trace with hash -370481977, now seen corresponding path program 14 times [2021-11-19 14:20:11,306 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:20:11,306 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920435145] [2021-11-19 14:20:11,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:20:11,306 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:20:11,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:20:11,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:20:11,587 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:20:11,587 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920435145] [2021-11-19 14:20:11,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920435145] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:20:11,587 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:20:11,587 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-19 14:20:11,588 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889829041] [2021-11-19 14:20:11,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:20:11,588 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-19 14:20:11,588 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:20:11,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-19 14:20:11,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-11-19 14:20:11,588 INFO L87 Difference]: Start difference. First operand 2517 states and 5739 transitions. Second operand has 12 states, 12 states have (on average 1.5) internal successors, (18), 11 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) [2021-11-19 14:20:14,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:20:14,578 INFO L93 Difference]: Finished difference Result 3109 states and 7007 transitions. [2021-11-19 14:20:14,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-19 14:20:14,579 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.5) internal successors, (18), 11 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 [2021-11-19 14:20:14,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:20:14,584 INFO L225 Difference]: With dead ends: 3109 [2021-11-19 14:20:14,584 INFO L226 Difference]: Without dead ends: 3109 [2021-11-19 14:20:14,585 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=192, Invalid=458, Unknown=0, NotChecked=0, Total=650 [2021-11-19 14:20:14,585 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 510 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 2173 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 510 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 2205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 2173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:20:14,585 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [510 Valid, 16 Invalid, 2205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 2173 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-11-19 14:20:14,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3109 states. [2021-11-19 14:20:14,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3109 to 2540. [2021-11-19 14:20:14,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2540 states, 2530 states have (on average 2.2889328063241106) internal successors, (5791), 2539 states have internal predecessors, (5791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:20:14,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2540 states to 2540 states and 5791 transitions. [2021-11-19 14:20:14,664 INFO L78 Accepts]: Start accepts. Automaton has 2540 states and 5791 transitions. Word has length 18 [2021-11-19 14:20:14,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:20:14,664 INFO L470 AbstractCegarLoop]: Abstraction has 2540 states and 5791 transitions. [2021-11-19 14:20:14,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.5) internal successors, (18), 11 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) [2021-11-19 14:20:14,664 INFO L276 IsEmpty]: Start isEmpty. Operand 2540 states and 5791 transitions. [2021-11-19 14:20:14,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-19 14:20:14,666 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:20:14,666 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:20:14,666 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-11-19 14:20:14,666 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-19 14:20:14,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:20:14,668 INFO L85 PathProgramCache]: Analyzing trace with hash -572897407, now seen corresponding path program 15 times [2021-11-19 14:20:14,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:20:14,668 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139136838] [2021-11-19 14:20:14,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:20:14,668 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:20:14,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:20:14,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:20:14,976 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:20:14,976 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139136838] [2021-11-19 14:20:14,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139136838] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:20:14,976 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:20:14,976 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-19 14:20:14,976 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436259232] [2021-11-19 14:20:14,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:20:14,977 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-19 14:20:14,977 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:20:14,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-19 14:20:14,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2021-11-19 14:20:14,977 INFO L87 Difference]: Start difference. First operand 2540 states and 5791 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) [2021-11-19 14:20:18,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:20:18,401 INFO L93 Difference]: Finished difference Result 3340 states and 7500 transitions. [2021-11-19 14:20:18,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-19 14:20:18,402 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 [2021-11-19 14:20:18,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:20:18,406 INFO L225 Difference]: With dead ends: 3340 [2021-11-19 14:20:18,406 INFO L226 Difference]: Without dead ends: 3340 [2021-11-19 14:20:18,407 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=490, Invalid=1232, Unknown=0, NotChecked=0, Total=1722 [2021-11-19 14:20:18,407 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 635 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 3383 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 635 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 3433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 3383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-19 14:20:18,407 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [635 Valid, 32 Invalid, 3433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 3383 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-11-19 14:20:18,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3340 states. [2021-11-19 14:20:18,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3340 to 2518. [2021-11-19 14:20:18,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2518 states, 2508 states have (on average 2.2890749601275915) internal successors, (5741), 2517 states have internal predecessors, (5741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:20:18,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2518 states to 2518 states and 5741 transitions. [2021-11-19 14:20:18,442 INFO L78 Accepts]: Start accepts. Automaton has 2518 states and 5741 transitions. Word has length 18 [2021-11-19 14:20:18,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:20:18,442 INFO L470 AbstractCegarLoop]: Abstraction has 2518 states and 5741 transitions. [2021-11-19 14:20:18,442 INFO L471 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) [2021-11-19 14:20:18,443 INFO L276 IsEmpty]: Start isEmpty. Operand 2518 states and 5741 transitions. [2021-11-19 14:20:18,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-19 14:20:18,443 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:20:18,444 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:20:18,444 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-11-19 14:20:18,444 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-19 14:20:18,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:20:18,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1265837241, now seen corresponding path program 16 times [2021-11-19 14:20:18,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:20:18,444 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998446058] [2021-11-19 14:20:18,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:20:18,444 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:20:18,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:20:18,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:20:18,664 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:20:18,664 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998446058] [2021-11-19 14:20:18,665 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998446058] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:20:18,665 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:20:18,665 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-19 14:20:18,665 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953677228] [2021-11-19 14:20:18,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:20:18,665 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-19 14:20:18,665 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:20:18,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-19 14:20:18,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2021-11-19 14:20:18,666 INFO L87 Difference]: Start difference. First operand 2518 states and 5741 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) [2021-11-19 14:20:22,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:20:22,420 INFO L93 Difference]: Finished difference Result 3367 states and 7565 transitions. [2021-11-19 14:20:22,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-19 14:20:22,421 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 [2021-11-19 14:20:22,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:20:22,425 INFO L225 Difference]: With dead ends: 3367 [2021-11-19 14:20:22,425 INFO L226 Difference]: Without dead ends: 3367 [2021-11-19 14:20:22,425 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=505, Invalid=1217, Unknown=0, NotChecked=0, Total=1722 [2021-11-19 14:20:22,426 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 606 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 3865 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 606 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 3911 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 3865 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-11-19 14:20:22,426 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [606 Valid, 32 Invalid, 3911 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 3865 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-11-19 14:20:22,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3367 states. [2021-11-19 14:20:22,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3367 to 2509. [2021-11-19 14:20:22,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2509 states, 2499 states have (on average 2.289715886354542) internal successors, (5722), 2508 states have internal predecessors, (5722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:20:22,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2509 states to 2509 states and 5722 transitions. [2021-11-19 14:20:22,461 INFO L78 Accepts]: Start accepts. Automaton has 2509 states and 5722 transitions. Word has length 18 [2021-11-19 14:20:22,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:20:22,462 INFO L470 AbstractCegarLoop]: Abstraction has 2509 states and 5722 transitions. [2021-11-19 14:20:22,462 INFO L471 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) [2021-11-19 14:20:22,462 INFO L276 IsEmpty]: Start isEmpty. Operand 2509 states and 5722 transitions. [2021-11-19 14:20:22,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-19 14:20:22,463 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:20:22,463 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:20:22,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-11-19 14:20:22,463 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-19 14:20:22,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:20:22,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1868877069, now seen corresponding path program 17 times [2021-11-19 14:20:22,463 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:20:22,463 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769831866] [2021-11-19 14:20:22,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:20:22,464 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:20:22,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:20:22,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:20:22,743 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:20:22,743 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769831866] [2021-11-19 14:20:22,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769831866] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:20:22,743 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:20:22,743 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-19 14:20:22,743 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454761900] [2021-11-19 14:20:22,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:20:22,744 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-19 14:20:22,744 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:20:22,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-19 14:20:22,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-19 14:20:22,744 INFO L87 Difference]: Start difference. First operand 2509 states and 5722 transitions. Second operand has 12 states, 12 states have (on average 1.5) internal successors, (18), 11 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) [2021-11-19 14:20:24,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:20:24,972 INFO L93 Difference]: Finished difference Result 3090 states and 6956 transitions. [2021-11-19 14:20:24,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-19 14:20:24,972 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.5) internal successors, (18), 11 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 [2021-11-19 14:20:24,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:20:24,976 INFO L225 Difference]: With dead ends: 3090 [2021-11-19 14:20:24,976 INFO L226 Difference]: Without dead ends: 3090 [2021-11-19 14:20:24,977 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=192, Invalid=458, Unknown=0, NotChecked=0, Total=650 [2021-11-19 14:20:24,977 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 595 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 1714 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 595 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 1755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-11-19 14:20:24,977 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [595 Valid, 16 Invalid, 1755 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1714 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-11-19 14:20:24,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3090 states. [2021-11-19 14:20:25,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3090 to 2502. [2021-11-19 14:20:25,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2502 states, 2492 states have (on average 2.289325842696629) internal successors, (5705), 2501 states have internal predecessors, (5705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:20:25,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2502 states to 2502 states and 5705 transitions. [2021-11-19 14:20:25,020 INFO L78 Accepts]: Start accepts. Automaton has 2502 states and 5705 transitions. Word has length 18 [2021-11-19 14:20:25,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:20:25,021 INFO L470 AbstractCegarLoop]: Abstraction has 2502 states and 5705 transitions. [2021-11-19 14:20:25,021 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.5) internal successors, (18), 11 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) [2021-11-19 14:20:25,021 INFO L276 IsEmpty]: Start isEmpty. Operand 2502 states and 5705 transitions. [2021-11-19 14:20:25,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-19 14:20:25,022 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:20:25,023 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:20:25,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-11-19 14:20:25,023 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-19 14:20:25,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:20:25,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1666461639, now seen corresponding path program 18 times [2021-11-19 14:20:25,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:20:25,024 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370992525] [2021-11-19 14:20:25,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:20:25,024 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:20:25,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:20:25,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:20:25,332 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:20:25,332 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370992525] [2021-11-19 14:20:25,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370992525] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:20:25,332 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:20:25,332 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-19 14:20:25,332 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471283677] [2021-11-19 14:20:25,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:20:25,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-19 14:20:25,333 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:20:25,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-19 14:20:25,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2021-11-19 14:20:25,333 INFO L87 Difference]: Start difference. First operand 2502 states and 5705 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) [2021-11-19 14:20:28,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:20:28,353 INFO L93 Difference]: Finished difference Result 3362 states and 7546 transitions. [2021-11-19 14:20:28,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-19 14:20:28,353 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 [2021-11-19 14:20:28,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:20:28,358 INFO L225 Difference]: With dead ends: 3362 [2021-11-19 14:20:28,358 INFO L226 Difference]: Without dead ends: 3362 [2021-11-19 14:20:28,358 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=489, Invalid=1233, Unknown=0, NotChecked=0, Total=1722 [2021-11-19 14:20:28,358 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 693 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 2967 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 693 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 3024 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 2967 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:20:28,359 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [693 Valid, 32 Invalid, 3024 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 2967 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-11-19 14:20:28,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3362 states. [2021-11-19 14:20:28,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3362 to 2469. [2021-11-19 14:20:28,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2469 states, 2459 states have (on average 2.2895485969906466) internal successors, (5630), 2468 states have internal predecessors, (5630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:20:28,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2469 states to 2469 states and 5630 transitions. [2021-11-19 14:20:28,393 INFO L78 Accepts]: Start accepts. Automaton has 2469 states and 5630 transitions. Word has length 18 [2021-11-19 14:20:28,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:20:28,393 INFO L470 AbstractCegarLoop]: Abstraction has 2469 states and 5630 transitions. [2021-11-19 14:20:28,393 INFO L471 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) [2021-11-19 14:20:28,393 INFO L276 IsEmpty]: Start isEmpty. Operand 2469 states and 5630 transitions. [2021-11-19 14:20:28,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-19 14:20:28,394 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:20:28,394 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:20:28,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-11-19 14:20:28,395 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-19 14:20:28,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:20:28,395 INFO L85 PathProgramCache]: Analyzing trace with hash 973521805, now seen corresponding path program 19 times [2021-11-19 14:20:28,395 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:20:28,395 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936837174] [2021-11-19 14:20:28,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:20:28,395 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:20:28,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:20:28,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:20:28,654 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:20:28,654 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936837174] [2021-11-19 14:20:28,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936837174] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:20:28,654 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:20:28,654 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-19 14:20:28,654 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534462684] [2021-11-19 14:20:28,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:20:28,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-19 14:20:28,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:20:28,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-19 14:20:28,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2021-11-19 14:20:28,655 INFO L87 Difference]: Start difference. First operand 2469 states and 5630 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) [2021-11-19 14:20:31,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:20:31,653 INFO L93 Difference]: Finished difference Result 3311 states and 7435 transitions. [2021-11-19 14:20:31,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-19 14:20:31,653 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 [2021-11-19 14:20:31,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:20:31,657 INFO L225 Difference]: With dead ends: 3311 [2021-11-19 14:20:31,657 INFO L226 Difference]: Without dead ends: 3311 [2021-11-19 14:20:31,657 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=504, Invalid=1218, Unknown=0, NotChecked=0, Total=1722 [2021-11-19 14:20:31,658 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 706 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 2818 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 706 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 2874 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 2818 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-11-19 14:20:31,658 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [706 Valid, 32 Invalid, 2874 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 2818 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-11-19 14:20:31,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3311 states. [2021-11-19 14:20:31,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3311 to 2459. [2021-11-19 14:20:31,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2459 states, 2449 states have (on average 2.2903225806451615) internal successors, (5609), 2458 states have internal predecessors, (5609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:20:31,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2459 states to 2459 states and 5609 transitions. [2021-11-19 14:20:31,692 INFO L78 Accepts]: Start accepts. Automaton has 2459 states and 5609 transitions. Word has length 18 [2021-11-19 14:20:31,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:20:31,692 INFO L470 AbstractCegarLoop]: Abstraction has 2459 states and 5609 transitions. [2021-11-19 14:20:31,692 INFO L471 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) [2021-11-19 14:20:31,692 INFO L276 IsEmpty]: Start isEmpty. Operand 2459 states and 5609 transitions. [2021-11-19 14:20:31,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-19 14:20:31,693 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:20:31,693 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:20:31,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-11-19 14:20:31,693 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-19 14:20:31,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:20:31,694 INFO L85 PathProgramCache]: Analyzing trace with hash -66502804, now seen corresponding path program 1 times [2021-11-19 14:20:31,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:20:31,694 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984354565] [2021-11-19 14:20:31,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:20:31,694 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:20:31,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:20:32,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:20:32,054 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:20:32,054 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984354565] [2021-11-19 14:20:32,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984354565] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:20:32,055 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:20:32,055 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-19 14:20:32,055 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141036612] [2021-11-19 14:20:32,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:20:32,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-19 14:20:32,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:20:32,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-19 14:20:32,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2021-11-19 14:20:32,055 INFO L87 Difference]: Start difference. First operand 2459 states and 5609 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) [2021-11-19 14:20:35,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:20:35,985 INFO L93 Difference]: Finished difference Result 5464 states and 12399 transitions. [2021-11-19 14:20:35,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-11-19 14:20:35,986 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 [2021-11-19 14:20:35,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:20:35,992 INFO L225 Difference]: With dead ends: 5464 [2021-11-19 14:20:35,993 INFO L226 Difference]: Without dead ends: 5464 [2021-11-19 14:20:35,993 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 391 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=663, Invalid=1689, Unknown=0, NotChecked=0, Total=2352 [2021-11-19 14:20:35,993 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 924 mSDsluCounter, 374 mSDsCounter, 0 mSdLazyCounter, 3636 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 924 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 3765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 3636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-19 14:20:35,993 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [924 Valid, 34 Invalid, 3765 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 3636 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-11-19 14:20:35,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5464 states. [2021-11-19 14:20:36,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5464 to 2753. [2021-11-19 14:20:36,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2753 states, 2743 states have (on average 2.3117025154939848) internal successors, (6341), 2752 states have internal predecessors, (6341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:20:36,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2753 states to 2753 states and 6341 transitions. [2021-11-19 14:20:36,041 INFO L78 Accepts]: Start accepts. Automaton has 2753 states and 6341 transitions. Word has length 20 [2021-11-19 14:20:36,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:20:36,041 INFO L470 AbstractCegarLoop]: Abstraction has 2753 states and 6341 transitions. [2021-11-19 14:20:36,042 INFO L471 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) [2021-11-19 14:20:36,042 INFO L276 IsEmpty]: Start isEmpty. Operand 2753 states and 6341 transitions. [2021-11-19 14:20:36,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-19 14:20:36,043 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:20:36,043 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:20:36,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-11-19 14:20:36,043 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-19 14:20:36,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:20:36,043 INFO L85 PathProgramCache]: Analyzing trace with hash -1810355950, now seen corresponding path program 1 times [2021-11-19 14:20:36,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:20:36,044 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591627080] [2021-11-19 14:20:36,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:20:36,044 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:20:36,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:20:38,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:20:38,177 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:20:38,177 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591627080] [2021-11-19 14:20:38,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591627080] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:20:38,178 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:20:38,178 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-19 14:20:38,178 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847848042] [2021-11-19 14:20:38,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:20:38,178 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-19 14:20:38,178 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:20:38,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-19 14:20:38,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2021-11-19 14:20:38,179 INFO L87 Difference]: Start difference. First operand 2753 states and 6341 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) [2021-11-19 14:20:45,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:20:45,427 INFO L93 Difference]: Finished difference Result 4191 states and 9520 transitions. [2021-11-19 14:20:45,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-19 14:20:45,427 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 [2021-11-19 14:20:45,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:20:45,434 INFO L225 Difference]: With dead ends: 4191 [2021-11-19 14:20:45,434 INFO L226 Difference]: Without dead ends: 4191 [2021-11-19 14:20:45,434 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 304 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=323, Invalid=1483, Unknown=0, NotChecked=0, Total=1806 [2021-11-19 14:20:45,434 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 667 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 4495 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 667 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 4572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 4495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2021-11-19 14:20:45,435 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [667 Valid, 24 Invalid, 4572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 4495 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2021-11-19 14:20:45,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4191 states. [2021-11-19 14:20:45,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4191 to 2901. [2021-11-19 14:20:45,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2901 states, 2891 states have (on average 2.3220338983050848) internal successors, (6713), 2900 states have internal predecessors, (6713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:20:45,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2901 states to 2901 states and 6713 transitions. [2021-11-19 14:20:45,482 INFO L78 Accepts]: Start accepts. Automaton has 2901 states and 6713 transitions. Word has length 20 [2021-11-19 14:20:45,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:20:45,482 INFO L470 AbstractCegarLoop]: Abstraction has 2901 states and 6713 transitions. [2021-11-19 14:20:45,482 INFO L471 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) [2021-11-19 14:20:45,482 INFO L276 IsEmpty]: Start isEmpty. Operand 2901 states and 6713 transitions. [2021-11-19 14:20:45,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-19 14:20:45,484 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:20:45,484 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:20:45,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-11-19 14:20:45,484 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-19 14:20:45,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:20:45,485 INFO L85 PathProgramCache]: Analyzing trace with hash -1778596980, now seen corresponding path program 2 times [2021-11-19 14:20:45,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:20:45,485 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142471541] [2021-11-19 14:20:45,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:20:45,485 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:20:45,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:20:47,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:20:47,234 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:20:47,234 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142471541] [2021-11-19 14:20:47,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142471541] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:20:47,234 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:20:47,234 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-19 14:20:47,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126734040] [2021-11-19 14:20:47,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:20:47,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-19 14:20:47,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:20:47,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-19 14:20:47,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2021-11-19 14:20:47,235 INFO L87 Difference]: Start difference. First operand 2901 states and 6713 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) [2021-11-19 14:20:53,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:20:53,069 INFO L93 Difference]: Finished difference Result 4081 states and 9320 transitions. [2021-11-19 14:20:53,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-19 14:20:53,070 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 [2021-11-19 14:20:53,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:20:53,075 INFO L225 Difference]: With dead ends: 4081 [2021-11-19 14:20:53,075 INFO L226 Difference]: Without dead ends: 4081 [2021-11-19 14:20:53,075 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=313, Invalid=1019, Unknown=0, NotChecked=0, Total=1332 [2021-11-19 14:20:53,078 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 702 mSDsluCounter, 393 mSDsCounter, 0 mSdLazyCounter, 3516 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 702 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 3563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 3516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:20:53,078 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [702 Valid, 24 Invalid, 3563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 3516 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2021-11-19 14:20:53,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4081 states. [2021-11-19 14:20:53,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4081 to 2914. [2021-11-19 14:20:53,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2914 states, 2904 states have (on average 2.3209366391184574) internal successors, (6740), 2913 states have internal predecessors, (6740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:20:53,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2914 states to 2914 states and 6740 transitions. [2021-11-19 14:20:53,123 INFO L78 Accepts]: Start accepts. Automaton has 2914 states and 6740 transitions. Word has length 20 [2021-11-19 14:20:53,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:20:53,123 INFO L470 AbstractCegarLoop]: Abstraction has 2914 states and 6740 transitions. [2021-11-19 14:20:53,123 INFO L471 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) [2021-11-19 14:20:53,123 INFO L276 IsEmpty]: Start isEmpty. Operand 2914 states and 6740 transitions. [2021-11-19 14:20:53,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-19 14:20:53,126 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:20:53,126 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:20:53,126 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-11-19 14:20:53,126 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-19 14:20:53,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:20:53,127 INFO L85 PathProgramCache]: Analyzing trace with hash 1429329674, now seen corresponding path program 2 times [2021-11-19 14:20:53,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:20:53,127 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567917432] [2021-11-19 14:20:53,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:20:53,127 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:20:53,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:20:53,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:20:53,457 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:20:53,457 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567917432] [2021-11-19 14:20:53,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567917432] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:20:53,457 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:20:53,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-19 14:20:53,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83685332] [2021-11-19 14:20:53,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:20:53,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-19 14:20:53,458 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:20:53,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-19 14:20:53,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2021-11-19 14:20:53,458 INFO L87 Difference]: Start difference. First operand 2914 states and 6740 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) [2021-11-19 14:20:57,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:20:57,491 INFO L93 Difference]: Finished difference Result 7182 states and 16436 transitions. [2021-11-19 14:20:57,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-11-19 14:20:57,492 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 [2021-11-19 14:20:57,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:20:57,502 INFO L225 Difference]: With dead ends: 7182 [2021-11-19 14:20:57,502 INFO L226 Difference]: Without dead ends: 7182 [2021-11-19 14:20:57,502 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 692 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=825, Invalid=2145, Unknown=0, NotChecked=0, Total=2970 [2021-11-19 14:20:57,503 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 1252 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 3064 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1252 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 3216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 3064 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:20:57,503 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1252 Valid, 34 Invalid, 3216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 3064 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-11-19 14:20:57,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7182 states. [2021-11-19 14:20:57,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7182 to 3199. [2021-11-19 14:20:57,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3199 states, 3189 states have (on average 2.3361555346503606) internal successors, (7450), 3198 states have internal predecessors, (7450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:20:57,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3199 states to 3199 states and 7450 transitions. [2021-11-19 14:20:57,607 INFO L78 Accepts]: Start accepts. Automaton has 3199 states and 7450 transitions. Word has length 20 [2021-11-19 14:20:57,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:20:57,607 INFO L470 AbstractCegarLoop]: Abstraction has 3199 states and 7450 transitions. [2021-11-19 14:20:57,607 INFO L471 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) [2021-11-19 14:20:57,607 INFO L276 IsEmpty]: Start isEmpty. Operand 3199 states and 7450 transitions. [2021-11-19 14:20:57,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-19 14:20:57,609 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:20:57,609 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:20:57,609 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-11-19 14:20:57,609 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-19 14:20:57,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:20:57,609 INFO L85 PathProgramCache]: Analyzing trace with hash -1341948864, now seen corresponding path program 3 times [2021-11-19 14:20:57,610 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:20:57,610 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029637246] [2021-11-19 14:20:57,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:20:57,610 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:20:57,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:20:57,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:20:57,955 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:20:57,955 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029637246] [2021-11-19 14:20:57,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029637246] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:20:57,955 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:20:57,955 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-19 14:20:57,955 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150989520] [2021-11-19 14:20:57,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:20:57,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-19 14:20:57,956 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:20:57,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-19 14:20:57,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2021-11-19 14:20:57,956 INFO L87 Difference]: Start difference. First operand 3199 states and 7450 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) [2021-11-19 14:21:02,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:21:02,234 INFO L93 Difference]: Finished difference Result 7664 states and 17657 transitions. [2021-11-19 14:21:02,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-11-19 14:21:02,234 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 [2021-11-19 14:21:02,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:21:02,245 INFO L225 Difference]: With dead ends: 7664 [2021-11-19 14:21:02,245 INFO L226 Difference]: Without dead ends: 7664 [2021-11-19 14:21:02,245 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 549 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=866, Invalid=2104, Unknown=0, NotChecked=0, Total=2970 [2021-11-19 14:21:02,246 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 1428 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 3099 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1428 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 3217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 3099 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-19 14:21:02,246 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1428 Valid, 34 Invalid, 3217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 3099 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-11-19 14:21:02,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7664 states. [2021-11-19 14:21:02,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7664 to 2906. [2021-11-19 14:21:02,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2906 states, 2896 states have (on average 2.320441988950276) internal successors, (6720), 2905 states have internal predecessors, (6720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:21:02,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2906 states to 2906 states and 6720 transitions. [2021-11-19 14:21:02,305 INFO L78 Accepts]: Start accepts. Automaton has 2906 states and 6720 transitions. Word has length 20 [2021-11-19 14:21:02,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:21:02,305 INFO L470 AbstractCegarLoop]: Abstraction has 2906 states and 6720 transitions. [2021-11-19 14:21:02,305 INFO L471 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) [2021-11-19 14:21:02,305 INFO L276 IsEmpty]: Start isEmpty. Operand 2906 states and 6720 transitions. [2021-11-19 14:21:02,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-19 14:21:02,307 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:21:02,307 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:21:02,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-11-19 14:21:02,307 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-19 14:21:02,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:21:02,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1515230971, now seen corresponding path program 1 times [2021-11-19 14:21:02,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:21:02,308 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063295552] [2021-11-19 14:21:02,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:21:02,308 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:21:02,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:21:02,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:21:02,507 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:21:02,507 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063295552] [2021-11-19 14:21:02,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063295552] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:21:02,507 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:21:02,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-19 14:21:02,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447104209] [2021-11-19 14:21:02,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:21:02,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-19 14:21:02,508 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:21:02,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-19 14:21:02,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2021-11-19 14:21:02,509 INFO L87 Difference]: Start difference. First operand 2906 states and 6720 transitions. Second operand has 14 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 13 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) [2021-11-19 14:21:06,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:21:06,236 INFO L93 Difference]: Finished difference Result 12443 states and 28036 transitions. [2021-11-19 14:21:06,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-19 14:21:06,237 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 13 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 [2021-11-19 14:21:06,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:21:06,294 INFO L225 Difference]: With dead ends: 12443 [2021-11-19 14:21:06,294 INFO L226 Difference]: Without dead ends: 12403 [2021-11-19 14:21:06,295 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 338 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=484, Invalid=1322, Unknown=0, NotChecked=0, Total=1806 [2021-11-19 14:21:06,300 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 1642 mSDsluCounter, 834 mSDsCounter, 0 mSdLazyCounter, 3327 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1642 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 3420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 3327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-11-19 14:21:06,300 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1642 Valid, 166 Invalid, 3420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 3327 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-11-19 14:21:06,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12403 states. [2021-11-19 14:21:06,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12403 to 3003. [2021-11-19 14:21:06,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3003 states, 2993 states have (on average 2.317741396592048) internal successors, (6937), 3002 states have internal predecessors, (6937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:21:06,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3003 states to 3003 states and 6937 transitions. [2021-11-19 14:21:06,423 INFO L78 Accepts]: Start accepts. Automaton has 3003 states and 6937 transitions. Word has length 20 [2021-11-19 14:21:06,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:21:06,424 INFO L470 AbstractCegarLoop]: Abstraction has 3003 states and 6937 transitions. [2021-11-19 14:21:06,425 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 13 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) [2021-11-19 14:21:06,425 INFO L276 IsEmpty]: Start isEmpty. Operand 3003 states and 6937 transitions. [2021-11-19 14:21:06,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-19 14:21:06,427 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:21:06,427 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:21:06,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-11-19 14:21:06,428 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-19 14:21:06,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:21:06,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1257557666, now seen corresponding path program 3 times [2021-11-19 14:21:06,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:21:06,428 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408384490] [2021-11-19 14:21:06,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:21:06,429 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:21:06,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:21:08,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:21:08,314 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:21:08,314 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408384490] [2021-11-19 14:21:08,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408384490] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:21:08,314 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:21:08,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-19 14:21:08,314 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102778897] [2021-11-19 14:21:08,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:21:08,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-19 14:21:08,315 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:21:08,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-19 14:21:08,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2021-11-19 14:21:08,316 INFO L87 Difference]: Start difference. First operand 3003 states and 6937 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) [2021-11-19 14:21:17,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:21:17,145 INFO L93 Difference]: Finished difference Result 4202 states and 9607 transitions. [2021-11-19 14:21:17,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-11-19 14:21:17,145 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 [2021-11-19 14:21:17,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:21:17,152 INFO L225 Difference]: With dead ends: 4202 [2021-11-19 14:21:17,152 INFO L226 Difference]: Without dead ends: 4202 [2021-11-19 14:21:17,152 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 427 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=370, Invalid=1792, Unknown=0, NotChecked=0, Total=2162 [2021-11-19 14:21:17,153 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 686 mSDsluCounter, 675 mSDsCounter, 0 mSdLazyCounter, 6119 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 686 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 6198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 6119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2021-11-19 14:21:17,153 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [686 Valid, 35 Invalid, 6198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 6119 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2021-11-19 14:21:17,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4202 states. [2021-11-19 14:21:17,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4202 to 3038. [2021-11-19 14:21:17,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3038 states, 3028 states have (on average 2.3183619550858654) internal successors, (7020), 3037 states have internal predecessors, (7020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:21:17,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3038 states to 3038 states and 7020 transitions. [2021-11-19 14:21:17,198 INFO L78 Accepts]: Start accepts. Automaton has 3038 states and 7020 transitions. Word has length 20 [2021-11-19 14:21:17,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:21:17,199 INFO L470 AbstractCegarLoop]: Abstraction has 3038 states and 7020 transitions. [2021-11-19 14:21:17,199 INFO L471 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) [2021-11-19 14:21:17,199 INFO L276 IsEmpty]: Start isEmpty. Operand 3038 states and 7020 transitions. [2021-11-19 14:21:17,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-19 14:21:17,201 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:21:17,201 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:21:17,201 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-11-19 14:21:17,201 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-19 14:21:17,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:21:17,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1225798696, now seen corresponding path program 4 times [2021-11-19 14:21:17,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:21:17,201 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704126158] [2021-11-19 14:21:17,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:21:17,202 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:21:17,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:21:18,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:21:18,683 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:21:18,683 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704126158] [2021-11-19 14:21:18,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704126158] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:21:18,683 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:21:18,683 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-19 14:21:18,683 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969467567] [2021-11-19 14:21:18,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:21:18,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-19 14:21:18,683 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:21:18,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-19 14:21:18,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2021-11-19 14:21:18,684 INFO L87 Difference]: Start difference. First operand 3038 states and 7020 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) [2021-11-19 14:21:26,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:21:26,356 INFO L93 Difference]: Finished difference Result 4285 states and 9815 transitions. [2021-11-19 14:21:26,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-19 14:21:26,357 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 [2021-11-19 14:21:26,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:21:26,363 INFO L225 Difference]: With dead ends: 4285 [2021-11-19 14:21:26,363 INFO L226 Difference]: Without dead ends: 4285 [2021-11-19 14:21:26,363 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=356, Invalid=1284, Unknown=0, NotChecked=0, Total=1640 [2021-11-19 14:21:26,364 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 556 mSDsluCounter, 629 mSDsCounter, 0 mSdLazyCounter, 5553 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 556 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 5591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 5553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2021-11-19 14:21:26,364 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [556 Valid, 34 Invalid, 5591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 5553 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2021-11-19 14:21:26,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4285 states. [2021-11-19 14:21:26,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4285 to 3003. [2021-11-19 14:21:26,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3003 states, 2993 states have (on average 2.317741396592048) internal successors, (6937), 3002 states have internal predecessors, (6937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:21:26,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3003 states to 3003 states and 6937 transitions. [2021-11-19 14:21:26,414 INFO L78 Accepts]: Start accepts. Automaton has 3003 states and 6937 transitions. Word has length 20 [2021-11-19 14:21:26,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:21:26,415 INFO L470 AbstractCegarLoop]: Abstraction has 3003 states and 6937 transitions. [2021-11-19 14:21:26,415 INFO L471 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) [2021-11-19 14:21:26,415 INFO L276 IsEmpty]: Start isEmpty. Operand 3003 states and 6937 transitions. [2021-11-19 14:21:26,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-19 14:21:26,416 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:21:26,416 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:21:26,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-11-19 14:21:26,417 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-19 14:21:26,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:21:26,417 INFO L85 PathProgramCache]: Analyzing trace with hash -695994306, now seen corresponding path program 4 times [2021-11-19 14:21:26,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:21:26,417 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126837105] [2021-11-19 14:21:26,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:21:26,417 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:21:26,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:21:26,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:21:26,755 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:21:26,756 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126837105] [2021-11-19 14:21:26,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126837105] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:21:26,756 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:21:26,756 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-19 14:21:26,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694592924] [2021-11-19 14:21:26,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:21:26,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-19 14:21:26,756 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:21:26,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-19 14:21:26,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2021-11-19 14:21:26,757 INFO L87 Difference]: Start difference. First operand 3003 states and 6937 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) [2021-11-19 14:21:30,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:21:30,466 INFO L93 Difference]: Finished difference Result 4492 states and 10268 transitions. [2021-11-19 14:21:30,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-11-19 14:21:30,466 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 [2021-11-19 14:21:30,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:21:30,478 INFO L225 Difference]: With dead ends: 4492 [2021-11-19 14:21:30,478 INFO L226 Difference]: Without dead ends: 4492 [2021-11-19 14:21:30,478 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 426 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=403, Invalid=1577, Unknown=0, NotChecked=0, Total=1980 [2021-11-19 14:21:30,479 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 883 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 3948 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 883 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 4004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 3948 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-11-19 14:21:30,479 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [883 Valid, 32 Invalid, 4004 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 3948 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-11-19 14:21:30,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4492 states. [2021-11-19 14:21:30,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4492 to 3040. [2021-11-19 14:21:30,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3040 states, 3030 states have (on average 2.3165016501650166) internal successors, (7019), 3039 states have internal predecessors, (7019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:21:30,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3040 states to 3040 states and 7019 transitions. [2021-11-19 14:21:30,548 INFO L78 Accepts]: Start accepts. Automaton has 3040 states and 7019 transitions. Word has length 20 [2021-11-19 14:21:30,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:21:30,548 INFO L470 AbstractCegarLoop]: Abstraction has 3040 states and 7019 transitions. [2021-11-19 14:21:30,549 INFO L471 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) [2021-11-19 14:21:30,549 INFO L276 IsEmpty]: Start isEmpty. Operand 3040 states and 7019 transitions. [2021-11-19 14:21:30,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-19 14:21:30,551 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:21:30,551 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:21:30,552 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-11-19 14:21:30,552 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-19 14:21:30,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:21:30,552 INFO L85 PathProgramCache]: Analyzing trace with hash 827694452, now seen corresponding path program 5 times [2021-11-19 14:21:30,553 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:21:30,553 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962380483] [2021-11-19 14:21:30,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:21:30,553 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:21:30,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:21:30,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:21:30,856 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:21:30,857 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962380483] [2021-11-19 14:21:30,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962380483] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:21:30,857 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:21:30,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-19 14:21:30,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686635736] [2021-11-19 14:21:30,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:21:30,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-19 14:21:30,857 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:21:30,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-19 14:21:30,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2021-11-19 14:21:30,858 INFO L87 Difference]: Start difference. First operand 3040 states and 7019 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) [2021-11-19 14:21:34,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:21:34,523 INFO L93 Difference]: Finished difference Result 4931 states and 11323 transitions. [2021-11-19 14:21:34,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-11-19 14:21:34,524 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 [2021-11-19 14:21:34,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:21:34,534 INFO L225 Difference]: With dead ends: 4931 [2021-11-19 14:21:34,534 INFO L226 Difference]: Without dead ends: 4931 [2021-11-19 14:21:34,534 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 508 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=456, Invalid=1800, Unknown=0, NotChecked=0, Total=2256 [2021-11-19 14:21:34,535 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 912 mSDsluCounter, 402 mSDsCounter, 0 mSdLazyCounter, 3988 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 912 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 4041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 3988 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-11-19 14:21:34,535 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [912 Valid, 32 Invalid, 4041 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 3988 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-11-19 14:21:34,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4931 states. [2021-11-19 14:21:34,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4931 to 3039. [2021-11-19 14:21:34,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3039 states, 3029 states have (on average 2.3169362826015187) internal successors, (7018), 3038 states have internal predecessors, (7018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:21:34,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3039 states to 3039 states and 7018 transitions. [2021-11-19 14:21:34,607 INFO L78 Accepts]: Start accepts. Automaton has 3039 states and 7018 transitions. Word has length 20 [2021-11-19 14:21:34,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:21:34,608 INFO L470 AbstractCegarLoop]: Abstraction has 3039 states and 7018 transitions. [2021-11-19 14:21:34,608 INFO L471 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) [2021-11-19 14:21:34,608 INFO L276 IsEmpty]: Start isEmpty. Operand 3039 states and 7018 transitions. [2021-11-19 14:21:34,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-19 14:21:34,611 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:21:34,611 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:21:34,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-11-19 14:21:34,611 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-19 14:21:34,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:21:34,612 INFO L85 PathProgramCache]: Analyzing trace with hash 654412345, now seen corresponding path program 2 times [2021-11-19 14:21:34,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:21:34,612 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028655054] [2021-11-19 14:21:34,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:21:34,612 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:21:34,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:21:34,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:21:34,800 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:21:34,800 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028655054] [2021-11-19 14:21:34,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028655054] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:21:34,800 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:21:34,800 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-19 14:21:34,800 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445460079] [2021-11-19 14:21:34,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:21:34,801 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-19 14:21:34,801 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:21:34,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-19 14:21:34,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-11-19 14:21:34,801 INFO L87 Difference]: Start difference. First operand 3039 states and 7018 transitions. Second operand has 13 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 12 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) [2021-11-19 14:21:38,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:21:38,442 INFO L93 Difference]: Finished difference Result 9504 states and 21443 transitions. [2021-11-19 14:21:38,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-19 14:21:38,442 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 12 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 [2021-11-19 14:21:38,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:21:38,459 INFO L225 Difference]: With dead ends: 9504 [2021-11-19 14:21:38,459 INFO L226 Difference]: Without dead ends: 9468 [2021-11-19 14:21:38,460 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 304 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=425, Invalid=1135, Unknown=0, NotChecked=0, Total=1560 [2021-11-19 14:21:38,460 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 1149 mSDsluCounter, 891 mSDsCounter, 0 mSdLazyCounter, 4051 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1149 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 4109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 4051 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-11-19 14:21:38,461 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1149 Valid, 193 Invalid, 4109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 4051 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-11-19 14:21:38,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9468 states. [2021-11-19 14:21:38,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9468 to 2958. [2021-11-19 14:21:38,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2958 states, 2948 states have (on average 2.3181818181818183) internal successors, (6834), 2957 states have internal predecessors, (6834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:21:38,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2958 states to 2958 states and 6834 transitions. [2021-11-19 14:21:38,559 INFO L78 Accepts]: Start accepts. Automaton has 2958 states and 6834 transitions. Word has length 20 [2021-11-19 14:21:38,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:21:38,560 INFO L470 AbstractCegarLoop]: Abstraction has 2958 states and 6834 transitions. [2021-11-19 14:21:38,560 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 12 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) [2021-11-19 14:21:38,560 INFO L276 IsEmpty]: Start isEmpty. Operand 2958 states and 6834 transitions. [2021-11-19 14:21:38,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-19 14:21:38,562 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:21:38,563 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:21:38,563 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-11-19 14:21:38,563 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-19 14:21:38,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:21:38,564 INFO L85 PathProgramCache]: Analyzing trace with hash -17075080, now seen corresponding path program 6 times [2021-11-19 14:21:38,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:21:38,564 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673199272] [2021-11-19 14:21:38,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:21:38,564 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:21:38,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:21:38,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:21:38,875 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:21:38,875 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673199272] [2021-11-19 14:21:38,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673199272] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:21:38,876 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:21:38,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-19 14:21:38,876 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110796994] [2021-11-19 14:21:38,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:21:38,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-19 14:21:38,876 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:21:38,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-19 14:21:38,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2021-11-19 14:21:38,877 INFO L87 Difference]: Start difference. First operand 2958 states and 6834 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) [2021-11-19 14:21:42,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:21:42,689 INFO L93 Difference]: Finished difference Result 4387 states and 10036 transitions. [2021-11-19 14:21:42,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-19 14:21:42,694 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 [2021-11-19 14:21:42,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:21:42,700 INFO L225 Difference]: With dead ends: 4387 [2021-11-19 14:21:42,700 INFO L226 Difference]: Without dead ends: 4387 [2021-11-19 14:21:42,700 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=427, Invalid=1213, Unknown=0, NotChecked=0, Total=1640 [2021-11-19 14:21:42,700 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 635 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 4665 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 635 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 4711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 4665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-11-19 14:21:42,701 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [635 Valid, 32 Invalid, 4711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 4665 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-11-19 14:21:42,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4387 states. [2021-11-19 14:21:42,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4387 to 2959. [2021-11-19 14:21:42,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2959 states, 2949 states have (on average 2.318073923363852) internal successors, (6836), 2958 states have internal predecessors, (6836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:21:42,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2959 states to 2959 states and 6836 transitions. [2021-11-19 14:21:42,763 INFO L78 Accepts]: Start accepts. Automaton has 2959 states and 6836 transitions. Word has length 20 [2021-11-19 14:21:42,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:21:42,763 INFO L470 AbstractCegarLoop]: Abstraction has 2959 states and 6836 transitions. [2021-11-19 14:21:42,763 INFO L471 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) [2021-11-19 14:21:42,763 INFO L276 IsEmpty]: Start isEmpty. Operand 2959 states and 6836 transitions. [2021-11-19 14:21:42,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-19 14:21:42,765 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:21:42,765 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:21:42,765 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2021-11-19 14:21:42,765 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-19 14:21:42,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:21:42,765 INFO L85 PathProgramCache]: Analyzing trace with hash 1506613678, now seen corresponding path program 7 times [2021-11-19 14:21:42,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:21:42,766 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146469080] [2021-11-19 14:21:42,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:21:42,766 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:21:42,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:21:43,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:21:43,052 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:21:43,052 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146469080] [2021-11-19 14:21:43,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146469080] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:21:43,053 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:21:43,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-19 14:21:43,053 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601766649] [2021-11-19 14:21:43,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:21:43,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-19 14:21:43,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:21:43,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-19 14:21:43,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2021-11-19 14:21:43,053 INFO L87 Difference]: Start difference. First operand 2959 states and 6836 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) [2021-11-19 14:21:46,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:21:46,401 INFO L93 Difference]: Finished difference Result 4653 states and 10682 transitions. [2021-11-19 14:21:46,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-19 14:21:46,401 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 [2021-11-19 14:21:46,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:21:46,407 INFO L225 Difference]: With dead ends: 4653 [2021-11-19 14:21:46,407 INFO L226 Difference]: Without dead ends: 4653 [2021-11-19 14:21:46,407 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=442, Invalid=1198, Unknown=0, NotChecked=0, Total=1640 [2021-11-19 14:21:46,407 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 731 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 3700 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 731 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 3749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 3700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-19 14:21:46,407 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [731 Valid, 32 Invalid, 3749 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 3700 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-11-19 14:21:46,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4653 states. [2021-11-19 14:21:46,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4653 to 2958. [2021-11-19 14:21:46,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2958 states, 2948 states have (on average 2.3181818181818183) internal successors, (6834), 2957 states have internal predecessors, (6834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:21:46,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2958 states to 2958 states and 6834 transitions. [2021-11-19 14:21:46,452 INFO L78 Accepts]: Start accepts. Automaton has 2958 states and 6834 transitions. Word has length 20 [2021-11-19 14:21:46,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:21:46,452 INFO L470 AbstractCegarLoop]: Abstraction has 2958 states and 6834 transitions. [2021-11-19 14:21:46,452 INFO L471 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) [2021-11-19 14:21:46,452 INFO L276 IsEmpty]: Start isEmpty. Operand 2958 states and 6834 transitions. [2021-11-19 14:21:46,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-19 14:21:46,454 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:21:46,454 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:21:46,454 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2021-11-19 14:21:46,454 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-19 14:21:46,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:21:46,454 INFO L85 PathProgramCache]: Analyzing trace with hash 2054491808, now seen corresponding path program 8 times [2021-11-19 14:21:46,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:21:46,455 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986429493] [2021-11-19 14:21:46,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:21:46,455 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:21:46,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:21:46,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:21:46,765 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:21:46,765 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986429493] [2021-11-19 14:21:46,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986429493] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:21:46,766 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:21:46,766 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-19 14:21:46,766 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334030859] [2021-11-19 14:21:46,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:21:46,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-19 14:21:46,766 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:21:46,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-19 14:21:46,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2021-11-19 14:21:46,767 INFO L87 Difference]: Start difference. First operand 2958 states and 6834 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) [2021-11-19 14:21:51,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:21:51,093 INFO L93 Difference]: Finished difference Result 5670 states and 13061 transitions. [2021-11-19 14:21:51,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-11-19 14:21:51,093 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 [2021-11-19 14:21:51,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:21:51,101 INFO L225 Difference]: With dead ends: 5670 [2021-11-19 14:21:51,101 INFO L226 Difference]: Without dead ends: 5670 [2021-11-19 14:21:51,101 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=597, Invalid=1565, Unknown=0, NotChecked=0, Total=2162 [2021-11-19 14:21:51,101 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 1140 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 4778 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1140 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 4828 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 4778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:21:51,101 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1140 Valid, 32 Invalid, 4828 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 4778 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2021-11-19 14:21:51,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5670 states. [2021-11-19 14:21:51,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5670 to 3020. [2021-11-19 14:21:51,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3020 states, 3010 states have (on average 2.317607973421927) internal successors, (6976), 3019 states have internal predecessors, (6976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:21:51,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3020 states to 3020 states and 6976 transitions. [2021-11-19 14:21:51,156 INFO L78 Accepts]: Start accepts. Automaton has 3020 states and 6976 transitions. Word has length 20 [2021-11-19 14:21:51,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:21:51,156 INFO L470 AbstractCegarLoop]: Abstraction has 3020 states and 6976 transitions. [2021-11-19 14:21:51,156 INFO L471 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) [2021-11-19 14:21:51,156 INFO L276 IsEmpty]: Start isEmpty. Operand 3020 states and 6976 transitions. [2021-11-19 14:21:51,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-19 14:21:51,158 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:21:51,158 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:21:51,158 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2021-11-19 14:21:51,158 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-19 14:21:51,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:21:51,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1920307518, now seen corresponding path program 9 times [2021-11-19 14:21:51,158 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:21:51,159 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376198113] [2021-11-19 14:21:51,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:21:51,159 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:21:51,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:21:51,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:21:51,468 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:21:51,468 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376198113] [2021-11-19 14:21:51,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376198113] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:21:51,468 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:21:51,468 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-19 14:21:51,468 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914825135] [2021-11-19 14:21:51,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:21:51,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-19 14:21:51,469 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:21:51,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-19 14:21:51,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2021-11-19 14:21:51,469 INFO L87 Difference]: Start difference. First operand 3020 states and 6976 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) [2021-11-19 14:21:55,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:21:55,900 INFO L93 Difference]: Finished difference Result 5253 states and 12057 transitions. [2021-11-19 14:21:55,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-11-19 14:21:55,900 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 [2021-11-19 14:21:55,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:21:55,907 INFO L225 Difference]: With dead ends: 5253 [2021-11-19 14:21:55,907 INFO L226 Difference]: Without dead ends: 5253 [2021-11-19 14:21:55,908 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 391 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=620, Invalid=1732, Unknown=0, NotChecked=0, Total=2352 [2021-11-19 14:21:55,908 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 1032 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 4477 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1032 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 4538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 4477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:21:55,909 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1032 Valid, 32 Invalid, 4538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 4477 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2021-11-19 14:21:55,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5253 states. [2021-11-19 14:21:55,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5253 to 3020. [2021-11-19 14:21:55,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3020 states, 3010 states have (on average 2.317607973421927) internal successors, (6976), 3019 states have internal predecessors, (6976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:21:55,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3020 states to 3020 states and 6976 transitions. [2021-11-19 14:21:55,978 INFO L78 Accepts]: Start accepts. Automaton has 3020 states and 6976 transitions. Word has length 20 [2021-11-19 14:21:55,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:21:55,978 INFO L470 AbstractCegarLoop]: Abstraction has 3020 states and 6976 transitions. [2021-11-19 14:21:55,978 INFO L471 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) [2021-11-19 14:21:55,978 INFO L276 IsEmpty]: Start isEmpty. Operand 3020 states and 6976 transitions. [2021-11-19 14:21:55,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-19 14:21:55,980 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:21:55,980 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:21:55,980 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2021-11-19 14:21:55,980 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-19 14:21:55,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:21:55,981 INFO L85 PathProgramCache]: Analyzing trace with hash -1063902700, now seen corresponding path program 10 times [2021-11-19 14:21:55,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:21:55,981 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397199394] [2021-11-19 14:21:55,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:21:55,981 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:21:55,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:21:56,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:21:56,244 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:21:56,244 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397199394] [2021-11-19 14:21:56,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397199394] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:21:56,245 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:21:56,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-19 14:21:56,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511092565] [2021-11-19 14:21:56,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:21:56,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-19 14:21:56,245 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:21:56,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-19 14:21:56,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2021-11-19 14:21:56,246 INFO L87 Difference]: Start difference. First operand 3020 states and 6976 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) [2021-11-19 14:21:59,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:21:59,358 INFO L93 Difference]: Finished difference Result 4576 states and 10442 transitions. [2021-11-19 14:21:59,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-19 14:21:59,359 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 [2021-11-19 14:21:59,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:21:59,365 INFO L225 Difference]: With dead ends: 4576 [2021-11-19 14:21:59,365 INFO L226 Difference]: Without dead ends: 4576 [2021-11-19 14:21:59,365 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=427, Invalid=1133, Unknown=0, NotChecked=0, Total=1560 [2021-11-19 14:21:59,366 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 795 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 3197 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 795 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 3255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 3197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:21:59,366 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [795 Valid, 32 Invalid, 3255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 3197 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-11-19 14:21:59,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4576 states. [2021-11-19 14:21:59,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4576 to 3019. [2021-11-19 14:21:59,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3019 states, 3009 states have (on average 2.3177135260884016) internal successors, (6974), 3018 states have internal predecessors, (6974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:21:59,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3019 states to 3019 states and 6974 transitions. [2021-11-19 14:21:59,414 INFO L78 Accepts]: Start accepts. Automaton has 3019 states and 6974 transitions. Word has length 20 [2021-11-19 14:21:59,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:21:59,414 INFO L470 AbstractCegarLoop]: Abstraction has 3019 states and 6974 transitions. [2021-11-19 14:21:59,414 INFO L471 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) [2021-11-19 14:21:59,415 INFO L276 IsEmpty]: Start isEmpty. Operand 3019 states and 6974 transitions. [2021-11-19 14:21:59,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-19 14:21:59,417 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:21:59,417 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:21:59,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2021-11-19 14:21:59,418 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-19 14:21:59,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:21:59,418 INFO L85 PathProgramCache]: Analyzing trace with hash 459786058, now seen corresponding path program 11 times [2021-11-19 14:21:59,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:21:59,418 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257563887] [2021-11-19 14:21:59,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:21:59,419 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:21:59,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:21:59,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:21:59,686 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:21:59,686 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257563887] [2021-11-19 14:21:59,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257563887] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:21:59,686 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:21:59,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-19 14:21:59,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097843807] [2021-11-19 14:21:59,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:21:59,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-19 14:21:59,687 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:21:59,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-19 14:21:59,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2021-11-19 14:21:59,687 INFO L87 Difference]: Start difference. First operand 3019 states and 6974 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) [2021-11-19 14:22:03,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:22:03,615 INFO L93 Difference]: Finished difference Result 4977 states and 11409 transitions. [2021-11-19 14:22:03,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-19 14:22:03,616 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 [2021-11-19 14:22:03,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:22:03,622 INFO L225 Difference]: With dead ends: 4977 [2021-11-19 14:22:03,622 INFO L226 Difference]: Without dead ends: 4977 [2021-11-19 14:22:03,623 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=488, Invalid=1234, Unknown=0, NotChecked=0, Total=1722 [2021-11-19 14:22:03,623 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 795 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 4199 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 795 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 4251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 4199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-11-19 14:22:03,623 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [795 Valid, 32 Invalid, 4251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 4199 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-11-19 14:22:03,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4977 states. [2021-11-19 14:22:03,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4977 to 2939. [2021-11-19 14:22:03,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2939 states, 2929 states have (on average 2.3188801638784566) internal successors, (6792), 2938 states have internal predecessors, (6792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:22:03,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2939 states to 2939 states and 6792 transitions. [2021-11-19 14:22:03,698 INFO L78 Accepts]: Start accepts. Automaton has 2939 states and 6792 transitions. Word has length 20 [2021-11-19 14:22:03,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:22:03,698 INFO L470 AbstractCegarLoop]: Abstraction has 2939 states and 6792 transitions. [2021-11-19 14:22:03,699 INFO L471 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) [2021-11-19 14:22:03,699 INFO L276 IsEmpty]: Start isEmpty. Operand 2939 states and 6792 transitions. [2021-11-19 14:22:03,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-19 14:22:03,700 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:22:03,700 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:22:03,700 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2021-11-19 14:22:03,700 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-19 14:22:03,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:22:03,701 INFO L85 PathProgramCache]: Analyzing trace with hash -247937146, now seen corresponding path program 5 times [2021-11-19 14:22:03,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:22:03,701 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490216047] [2021-11-19 14:22:03,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:22:03,701 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:22:03,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:22:05,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:22:05,470 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:22:05,470 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490216047] [2021-11-19 14:22:05,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490216047] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:22:05,470 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:22:05,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-19 14:22:05,471 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362090026] [2021-11-19 14:22:05,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:22:05,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-19 14:22:05,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:22:05,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-19 14:22:05,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2021-11-19 14:22:05,471 INFO L87 Difference]: Start difference. First operand 2939 states and 6792 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) [2021-11-19 14:22:13,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:22:13,571 INFO L93 Difference]: Finished difference Result 4017 states and 9184 transitions. [2021-11-19 14:22:13,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-19 14:22:13,572 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 [2021-11-19 14:22:13,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:22:13,577 INFO L225 Difference]: With dead ends: 4017 [2021-11-19 14:22:13,577 INFO L226 Difference]: Without dead ends: 4017 [2021-11-19 14:22:13,577 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 441 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=409, Invalid=1753, Unknown=0, NotChecked=0, Total=2162 [2021-11-19 14:22:13,577 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 761 mSDsluCounter, 643 mSDsCounter, 0 mSdLazyCounter, 5700 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 761 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 5761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 5700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:22:13,578 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [761 Valid, 35 Invalid, 5761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 5700 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2021-11-19 14:22:13,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4017 states. [2021-11-19 14:22:13,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4017 to 2955. [2021-11-19 14:22:13,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2955 states, 2945 states have (on average 2.3185059422750425) internal successors, (6828), 2954 states have internal predecessors, (6828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:22:13,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2955 states to 2955 states and 6828 transitions. [2021-11-19 14:22:13,657 INFO L78 Accepts]: Start accepts. Automaton has 2955 states and 6828 transitions. Word has length 20 [2021-11-19 14:22:13,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:22:13,658 INFO L470 AbstractCegarLoop]: Abstraction has 2955 states and 6828 transitions. [2021-11-19 14:22:13,658 INFO L471 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) [2021-11-19 14:22:13,658 INFO L276 IsEmpty]: Start isEmpty. Operand 2955 states and 6828 transitions. [2021-11-19 14:22:13,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-19 14:22:13,660 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:22:13,660 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:22:13,660 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2021-11-19 14:22:13,661 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-19 14:22:13,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:22:13,661 INFO L85 PathProgramCache]: Analyzing trace with hash -216178176, now seen corresponding path program 6 times [2021-11-19 14:22:13,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:22:13,662 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253165044] [2021-11-19 14:22:13,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:22:13,662 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:22:13,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:22:15,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:22:15,205 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:22:15,205 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253165044] [2021-11-19 14:22:15,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253165044] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:22:15,205 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:22:15,205 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-19 14:22:15,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725596485] [2021-11-19 14:22:15,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:22:15,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-19 14:22:15,206 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:22:15,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-19 14:22:15,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2021-11-19 14:22:15,206 INFO L87 Difference]: Start difference. First operand 2955 states and 6828 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) [2021-11-19 14:22:23,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:22:23,124 INFO L93 Difference]: Finished difference Result 4115 states and 9425 transitions. [2021-11-19 14:22:23,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-19 14:22:23,125 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 [2021-11-19 14:22:23,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:22:23,129 INFO L225 Difference]: With dead ends: 4115 [2021-11-19 14:22:23,129 INFO L226 Difference]: Without dead ends: 4115 [2021-11-19 14:22:23,129 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=395, Invalid=1411, Unknown=0, NotChecked=0, Total=1806 [2021-11-19 14:22:23,130 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 742 mSDsluCounter, 566 mSDsCounter, 0 mSdLazyCounter, 4973 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 742 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 5019 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 4973 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2021-11-19 14:22:23,130 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [742 Valid, 35 Invalid, 5019 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 4973 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2021-11-19 14:22:23,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4115 states. [2021-11-19 14:22:23,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4115 to 2948. [2021-11-19 14:22:23,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2948 states, 2938 states have (on average 2.318924438393465) internal successors, (6813), 2947 states have internal predecessors, (6813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:22:23,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2948 states to 2948 states and 6813 transitions. [2021-11-19 14:22:23,176 INFO L78 Accepts]: Start accepts. Automaton has 2948 states and 6813 transitions. Word has length 20 [2021-11-19 14:22:23,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:22:23,176 INFO L470 AbstractCegarLoop]: Abstraction has 2948 states and 6813 transitions. [2021-11-19 14:22:23,176 INFO L471 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) [2021-11-19 14:22:23,176 INFO L276 IsEmpty]: Start isEmpty. Operand 2948 states and 6813 transitions. [2021-11-19 14:22:23,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-19 14:22:23,178 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:22:23,178 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:22:23,178 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2021-11-19 14:22:23,178 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-19 14:22:23,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:22:23,179 INFO L85 PathProgramCache]: Analyzing trace with hash -1728617314, now seen corresponding path program 7 times [2021-11-19 14:22:23,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:22:23,179 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656027365] [2021-11-19 14:22:23,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:22:23,179 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:22:23,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:22:25,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:22:25,623 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:22:25,623 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656027365] [2021-11-19 14:22:25,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656027365] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:22:25,623 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:22:25,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-19 14:22:25,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849128879] [2021-11-19 14:22:25,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:22:25,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-19 14:22:25,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:22:25,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-19 14:22:25,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2021-11-19 14:22:25,624 INFO L87 Difference]: Start difference. First operand 2948 states and 6813 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) [2021-11-19 14:22:40,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:22:40,063 INFO L93 Difference]: Finished difference Result 3950 states and 9046 transitions. [2021-11-19 14:22:40,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-11-19 14:22:40,063 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 [2021-11-19 14:22:40,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:22:40,070 INFO L225 Difference]: With dead ends: 3950 [2021-11-19 14:22:40,070 INFO L226 Difference]: Without dead ends: 3950 [2021-11-19 14:22:40,071 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 534 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=487, Invalid=2269, Unknown=0, NotChecked=0, Total=2756 [2021-11-19 14:22:40,071 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 773 mSDsluCounter, 729 mSDsCounter, 0 mSdLazyCounter, 7457 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 773 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 7501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 7457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2021-11-19 14:22:40,071 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [773 Valid, 25 Invalid, 7501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 7457 Invalid, 0 Unknown, 0 Unchecked, 8.5s Time] [2021-11-19 14:22:40,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3950 states. [2021-11-19 14:22:40,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3950 to 2948. [2021-11-19 14:22:40,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2948 states, 2938 states have (on average 2.318924438393465) internal successors, (6813), 2947 states have internal predecessors, (6813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:22:40,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2948 states to 2948 states and 6813 transitions. [2021-11-19 14:22:40,112 INFO L78 Accepts]: Start accepts. Automaton has 2948 states and 6813 transitions. Word has length 20 [2021-11-19 14:22:40,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:22:40,112 INFO L470 AbstractCegarLoop]: Abstraction has 2948 states and 6813 transitions. [2021-11-19 14:22:40,112 INFO L471 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) [2021-11-19 14:22:40,112 INFO L276 IsEmpty]: Start isEmpty. Operand 2948 states and 6813 transitions. [2021-11-19 14:22:40,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-19 14:22:40,114 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:22:40,114 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:22:40,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2021-11-19 14:22:40,114 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-19 14:22:40,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:22:40,114 INFO L85 PathProgramCache]: Analyzing trace with hash -1278584104, now seen corresponding path program 8 times [2021-11-19 14:22:40,114 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:22:40,114 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397552342] [2021-11-19 14:22:40,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:22:40,115 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:22:40,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:22:41,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:22:41,697 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:22:41,697 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397552342] [2021-11-19 14:22:41,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397552342] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:22:41,697 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:22:41,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-19 14:22:41,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832463246] [2021-11-19 14:22:41,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:22:41,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-19 14:22:41,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:22:41,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-19 14:22:41,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2021-11-19 14:22:41,698 INFO L87 Difference]: Start difference. First operand 2948 states and 6813 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) [2021-11-19 14:22:47,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:22:47,938 INFO L93 Difference]: Finished difference Result 3954 states and 9050 transitions. [2021-11-19 14:22:47,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-19 14:22:47,938 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 [2021-11-19 14:22:47,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:22:47,943 INFO L225 Difference]: With dead ends: 3954 [2021-11-19 14:22:47,943 INFO L226 Difference]: Without dead ends: 3954 [2021-11-19 14:22:47,944 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=333, Invalid=1307, Unknown=0, NotChecked=0, Total=1640 [2021-11-19 14:22:47,944 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 792 mSDsluCounter, 460 mSDsCounter, 0 mSdLazyCounter, 4252 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 792 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 4300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 4252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2021-11-19 14:22:47,944 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [792 Valid, 25 Invalid, 4300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 4252 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2021-11-19 14:22:47,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3954 states. [2021-11-19 14:22:47,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3954 to 2950. [2021-11-19 14:22:47,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2950 states, 2940 states have (on average 2.3187074829931973) internal successors, (6817), 2949 states have internal predecessors, (6817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:22:47,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2950 states to 2950 states and 6817 transitions. [2021-11-19 14:22:47,987 INFO L78 Accepts]: Start accepts. Automaton has 2950 states and 6817 transitions. Word has length 20 [2021-11-19 14:22:47,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:22:47,987 INFO L470 AbstractCegarLoop]: Abstraction has 2950 states and 6817 transitions. [2021-11-19 14:22:47,987 INFO L471 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) [2021-11-19 14:22:47,987 INFO L276 IsEmpty]: Start isEmpty. Operand 2950 states and 6817 transitions. [2021-11-19 14:22:47,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-19 14:22:47,988 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:22:47,989 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:22:47,989 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2021-11-19 14:22:47,989 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-19 14:22:47,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:22:47,989 INFO L85 PathProgramCache]: Analyzing trace with hash -1252419680, now seen corresponding path program 9 times [2021-11-19 14:22:47,989 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:22:47,989 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627163487] [2021-11-19 14:22:47,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:22:47,989 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:22:48,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:22:49,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:22:49,591 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:22:49,591 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627163487] [2021-11-19 14:22:49,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627163487] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:22:49,591 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:22:49,591 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-19 14:22:49,591 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340715795] [2021-11-19 14:22:49,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:22:49,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-19 14:22:49,592 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:22:49,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-19 14:22:49,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2021-11-19 14:22:49,592 INFO L87 Difference]: Start difference. First operand 2950 states and 6817 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) [2021-11-19 14:22:59,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:22:59,562 INFO L93 Difference]: Finished difference Result 4021 states and 9205 transitions. [2021-11-19 14:22:59,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-11-19 14:22:59,563 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 [2021-11-19 14:22:59,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:22:59,568 INFO L225 Difference]: With dead ends: 4021 [2021-11-19 14:22:59,568 INFO L226 Difference]: Without dead ends: 4021 [2021-11-19 14:22:59,568 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 422 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=368, Invalid=1612, Unknown=0, NotChecked=0, Total=1980 [2021-11-19 14:22:59,568 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 636 mSDsluCounter, 755 mSDsCounter, 0 mSdLazyCounter, 7177 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 636 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 7216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 7177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2021-11-19 14:22:59,569 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [636 Valid, 25 Invalid, 7216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 7177 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2021-11-19 14:22:59,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4021 states. [2021-11-19 14:22:59,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4021 to 2952. [2021-11-19 14:22:59,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2952 states, 2942 states have (on average 2.3184908225696805) internal successors, (6821), 2951 states have internal predecessors, (6821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:22:59,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2952 states to 2952 states and 6821 transitions. [2021-11-19 14:22:59,632 INFO L78 Accepts]: Start accepts. Automaton has 2952 states and 6821 transitions. Word has length 20 [2021-11-19 14:22:59,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:22:59,632 INFO L470 AbstractCegarLoop]: Abstraction has 2952 states and 6821 transitions. [2021-11-19 14:22:59,632 INFO L471 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) [2021-11-19 14:22:59,632 INFO L276 IsEmpty]: Start isEmpty. Operand 2952 states and 6821 transitions. [2021-11-19 14:22:59,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-19 14:22:59,635 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:22:59,635 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:22:59,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2021-11-19 14:22:59,635 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-19 14:22:59,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:22:59,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1195224482, now seen corresponding path program 10 times [2021-11-19 14:22:59,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:22:59,636 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242680145] [2021-11-19 14:22:59,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:22:59,636 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:22:59,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:23:01,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:23:01,274 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:23:01,274 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242680145] [2021-11-19 14:23:01,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242680145] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:23:01,275 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:23:01,275 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-19 14:23:01,275 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166966493] [2021-11-19 14:23:01,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:23:01,275 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-19 14:23:01,275 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:23:01,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-19 14:23:01,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2021-11-19 14:23:01,276 INFO L87 Difference]: Start difference. First operand 2952 states and 6821 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) [2021-11-19 14:23:10,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:23:10,129 INFO L93 Difference]: Finished difference Result 4007 states and 9174 transitions. [2021-11-19 14:23:10,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-11-19 14:23:10,129 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 [2021-11-19 14:23:10,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:23:10,134 INFO L225 Difference]: With dead ends: 4007 [2021-11-19 14:23:10,134 INFO L226 Difference]: Without dead ends: 4007 [2021-11-19 14:23:10,134 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 524 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=437, Invalid=1819, Unknown=0, NotChecked=0, Total=2256 [2021-11-19 14:23:10,134 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 772 mSDsluCounter, 578 mSDsCounter, 0 mSdLazyCounter, 5384 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 772 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 5425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 5384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:23:10,135 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [772 Valid, 25 Invalid, 5425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 5384 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2021-11-19 14:23:10,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4007 states. [2021-11-19 14:23:10,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4007 to 2954. [2021-11-19 14:23:10,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2954 states, 2944 states have (on average 2.3182744565217392) internal successors, (6825), 2953 states have internal predecessors, (6825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:23:10,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2954 states to 2954 states and 6825 transitions. [2021-11-19 14:23:10,176 INFO L78 Accepts]: Start accepts. Automaton has 2954 states and 6825 transitions. Word has length 20 [2021-11-19 14:23:10,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:23:10,176 INFO L470 AbstractCegarLoop]: Abstraction has 2954 states and 6825 transitions. [2021-11-19 14:23:10,176 INFO L471 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) [2021-11-19 14:23:10,176 INFO L276 IsEmpty]: Start isEmpty. Operand 2954 states and 6825 transitions. [2021-11-19 14:23:10,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-19 14:23:10,177 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:23:10,178 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:23:10,178 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2021-11-19 14:23:10,178 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-19 14:23:10,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:23:10,178 INFO L85 PathProgramCache]: Analyzing trace with hash 1762869424, now seen corresponding path program 11 times [2021-11-19 14:23:10,178 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:23:10,178 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759559219] [2021-11-19 14:23:10,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:23:10,178 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:23:10,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:23:11,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:23:11,782 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:23:11,782 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759559219] [2021-11-19 14:23:11,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759559219] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:23:11,782 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:23:11,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-19 14:23:11,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859232635] [2021-11-19 14:23:11,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:23:11,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-19 14:23:11,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:23:11,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-19 14:23:11,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2021-11-19 14:23:11,783 INFO L87 Difference]: Start difference. First operand 2954 states and 6825 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) [2021-11-19 14:23:19,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:23:19,821 INFO L93 Difference]: Finished difference Result 4331 states and 9912 transitions. [2021-11-19 14:23:19,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-19 14:23:19,822 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 [2021-11-19 14:23:19,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:23:19,827 INFO L225 Difference]: With dead ends: 4331 [2021-11-19 14:23:19,827 INFO L226 Difference]: Without dead ends: 4331 [2021-11-19 14:23:19,827 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=388, Invalid=1504, Unknown=0, NotChecked=0, Total=1892 [2021-11-19 14:23:19,827 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 723 mSDsluCounter, 607 mSDsCounter, 0 mSdLazyCounter, 5604 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 723 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 5648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 5604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2021-11-19 14:23:19,827 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [723 Valid, 25 Invalid, 5648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 5604 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2021-11-19 14:23:19,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4331 states. [2021-11-19 14:23:19,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4331 to 2954. [2021-11-19 14:23:19,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2954 states, 2944 states have (on average 2.3182744565217392) internal successors, (6825), 2953 states have internal predecessors, (6825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:23:19,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2954 states to 2954 states and 6825 transitions. [2021-11-19 14:23:19,870 INFO L78 Accepts]: Start accepts. Automaton has 2954 states and 6825 transitions. Word has length 20 [2021-11-19 14:23:19,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:23:19,870 INFO L470 AbstractCegarLoop]: Abstraction has 2954 states and 6825 transitions. [2021-11-19 14:23:19,870 INFO L471 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) [2021-11-19 14:23:19,870 INFO L276 IsEmpty]: Start isEmpty. Operand 2954 states and 6825 transitions. [2021-11-19 14:23:19,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-19 14:23:19,872 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:23:19,872 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:23:19,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2021-11-19 14:23:19,872 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-19 14:23:19,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:23:19,873 INFO L85 PathProgramCache]: Analyzing trace with hash 504204054, now seen corresponding path program 12 times [2021-11-19 14:23:19,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:23:19,873 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292049879] [2021-11-19 14:23:19,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:23:19,873 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:23:19,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:23:22,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:23:22,154 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:23:22,155 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292049879] [2021-11-19 14:23:22,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292049879] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:23:22,155 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:23:22,155 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-19 14:23:22,155 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017934000] [2021-11-19 14:23:22,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:23:22,155 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-19 14:23:22,155 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:23:22,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-19 14:23:22,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2021-11-19 14:23:22,156 INFO L87 Difference]: Start difference. First operand 2954 states and 6825 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) [2021-11-19 14:23:33,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:23:33,496 INFO L93 Difference]: Finished difference Result 3988 states and 9128 transitions. [2021-11-19 14:23:33,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-11-19 14:23:33,497 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 [2021-11-19 14:23:33,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:23:33,501 INFO L225 Difference]: With dead ends: 3988 [2021-11-19 14:23:33,501 INFO L226 Difference]: Without dead ends: 3988 [2021-11-19 14:23:33,502 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 437 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=464, Invalid=1986, Unknown=0, NotChecked=0, Total=2450 [2021-11-19 14:23:33,502 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 881 mSDsluCounter, 569 mSDsCounter, 0 mSdLazyCounter, 5802 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 881 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 5850 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 5802 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2021-11-19 14:23:33,502 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [881 Valid, 25 Invalid, 5850 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 5802 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2021-11-19 14:23:33,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3988 states. [2021-11-19 14:23:33,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3988 to 2954. [2021-11-19 14:23:33,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2954 states, 2944 states have (on average 2.3182744565217392) internal successors, (6825), 2953 states have internal predecessors, (6825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:23:33,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2954 states to 2954 states and 6825 transitions. [2021-11-19 14:23:33,543 INFO L78 Accepts]: Start accepts. Automaton has 2954 states and 6825 transitions. Word has length 20 [2021-11-19 14:23:33,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:23:33,543 INFO L470 AbstractCegarLoop]: Abstraction has 2954 states and 6825 transitions. [2021-11-19 14:23:33,543 INFO L471 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) [2021-11-19 14:23:33,543 INFO L276 IsEmpty]: Start isEmpty. Operand 2954 states and 6825 transitions. [2021-11-19 14:23:33,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-19 14:23:33,545 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:23:33,545 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:23:33,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2021-11-19 14:23:33,545 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-19 14:23:33,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:23:33,545 INFO L85 PathProgramCache]: Analyzing trace with hash -598248128, now seen corresponding path program 13 times [2021-11-19 14:23:33,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:23:33,546 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781670647] [2021-11-19 14:23:33,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:23:33,546 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:23:33,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:23:36,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:23:36,107 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:23:36,107 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781670647] [2021-11-19 14:23:36,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781670647] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:23:36,107 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:23:36,107 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-19 14:23:36,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248142611] [2021-11-19 14:23:36,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:23:36,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-19 14:23:36,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:23:36,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-19 14:23:36,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2021-11-19 14:23:36,108 INFO L87 Difference]: Start difference. First operand 2954 states and 6825 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) [2021-11-19 14:23:49,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:23:49,924 INFO L93 Difference]: Finished difference Result 3987 states and 9155 transitions. [2021-11-19 14:23:49,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-11-19 14:23:49,925 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 [2021-11-19 14:23:49,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:23:49,930 INFO L225 Difference]: With dead ends: 3987 [2021-11-19 14:23:49,930 INFO L226 Difference]: Without dead ends: 3987 [2021-11-19 14:23:49,930 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 540 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=550, Invalid=2312, Unknown=0, NotChecked=0, Total=2862 [2021-11-19 14:23:49,930 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 759 mSDsluCounter, 670 mSDsCounter, 0 mSdLazyCounter, 6586 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 759 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 6630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 6586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:23:49,931 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [759 Valid, 35 Invalid, 6630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 6586 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2021-11-19 14:23:49,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3987 states. [2021-11-19 14:23:49,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3987 to 2945. [2021-11-19 14:23:49,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2945 states, 2935 states have (on average 2.318228279386712) internal successors, (6804), 2944 states have internal predecessors, (6804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:23:49,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2945 states to 2945 states and 6804 transitions. [2021-11-19 14:23:49,976 INFO L78 Accepts]: Start accepts. Automaton has 2945 states and 6804 transitions. Word has length 20 [2021-11-19 14:23:49,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:23:49,976 INFO L470 AbstractCegarLoop]: Abstraction has 2945 states and 6804 transitions. [2021-11-19 14:23:49,976 INFO L471 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) [2021-11-19 14:23:49,977 INFO L276 IsEmpty]: Start isEmpty. Operand 2945 states and 6804 transitions. [2021-11-19 14:23:49,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-19 14:23:49,978 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:23:49,978 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:23:49,978 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2021-11-19 14:23:49,978 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-19 14:23:49,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:23:49,979 INFO L85 PathProgramCache]: Analyzing trace with hash 663493322, now seen corresponding path program 14 times [2021-11-19 14:23:49,979 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:23:49,979 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11712648] [2021-11-19 14:23:49,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:23:49,979 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:23:50,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:23:51,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:23:51,805 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:23:51,805 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11712648] [2021-11-19 14:23:51,805 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11712648] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:23:51,805 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:23:51,805 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-19 14:23:51,805 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135882203] [2021-11-19 14:23:51,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:23:51,806 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-19 14:23:51,806 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:23:51,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-19 14:23:51,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2021-11-19 14:23:51,806 INFO L87 Difference]: Start difference. First operand 2945 states and 6804 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) [2021-11-19 14:24:01,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:24:01,305 INFO L93 Difference]: Finished difference Result 4586 states and 10459 transitions. [2021-11-19 14:24:01,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-11-19 14:24:01,306 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 [2021-11-19 14:24:01,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:24:01,311 INFO L225 Difference]: With dead ends: 4586 [2021-11-19 14:24:01,312 INFO L226 Difference]: Without dead ends: 4586 [2021-11-19 14:24:01,312 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 711 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=624, Invalid=2568, Unknown=0, NotChecked=0, Total=3192 [2021-11-19 14:24:01,312 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 939 mSDsluCounter, 579 mSDsCounter, 0 mSdLazyCounter, 5275 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 939 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 5355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 5275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:24:01,312 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [939 Valid, 34 Invalid, 5355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 5275 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2021-11-19 14:24:01,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4586 states. [2021-11-19 14:24:01,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4586 to 2970. [2021-11-19 14:24:01,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2970 states, 2960 states have (on average 2.3172297297297297) internal successors, (6859), 2969 states have internal predecessors, (6859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:24:01,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2970 states to 2970 states and 6859 transitions. [2021-11-19 14:24:01,358 INFO L78 Accepts]: Start accepts. Automaton has 2970 states and 6859 transitions. Word has length 20 [2021-11-19 14:24:01,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:24:01,358 INFO L470 AbstractCegarLoop]: Abstraction has 2970 states and 6859 transitions. [2021-11-19 14:24:01,358 INFO L471 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) [2021-11-19 14:24:01,358 INFO L276 IsEmpty]: Start isEmpty. Operand 2970 states and 6859 transitions. [2021-11-19 14:24:01,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-19 14:24:01,360 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:24:01,360 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:24:01,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2021-11-19 14:24:01,361 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-19 14:24:01,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:24:01,361 INFO L85 PathProgramCache]: Analyzing trace with hash 695252292, now seen corresponding path program 15 times [2021-11-19 14:24:01,361 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:24:01,361 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981627252] [2021-11-19 14:24:01,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:24:01,362 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:24:01,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:24:02,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:24:02,973 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:24:02,973 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981627252] [2021-11-19 14:24:02,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981627252] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:24:02,973 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:24:02,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-19 14:24:02,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367199336] [2021-11-19 14:24:02,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:24:02,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-19 14:24:02,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:24:02,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-19 14:24:02,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2021-11-19 14:24:02,974 INFO L87 Difference]: Start difference. First operand 2970 states and 6859 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) [2021-11-19 14:24:11,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:24:11,335 INFO L93 Difference]: Finished difference Result 4312 states and 9865 transitions. [2021-11-19 14:24:11,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-11-19 14:24:11,336 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 [2021-11-19 14:24:11,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:24:11,341 INFO L225 Difference]: With dead ends: 4312 [2021-11-19 14:24:11,341 INFO L226 Difference]: Without dead ends: 4312 [2021-11-19 14:24:11,341 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 358 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=462, Invalid=1608, Unknown=0, NotChecked=0, Total=2070 [2021-11-19 14:24:11,341 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 681 mSDsluCounter, 592 mSDsCounter, 0 mSdLazyCounter, 5399 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 681 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 5447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 5399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:24:11,342 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [681 Valid, 34 Invalid, 5447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 5399 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2021-11-19 14:24:11,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4312 states. [2021-11-19 14:24:11,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4312 to 2945. [2021-11-19 14:24:11,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2945 states, 2935 states have (on average 2.318228279386712) internal successors, (6804), 2944 states have internal predecessors, (6804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:24:11,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2945 states to 2945 states and 6804 transitions. [2021-11-19 14:24:11,385 INFO L78 Accepts]: Start accepts. Automaton has 2945 states and 6804 transitions. Word has length 20 [2021-11-19 14:24:11,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:24:11,385 INFO L470 AbstractCegarLoop]: Abstraction has 2945 states and 6804 transitions. [2021-11-19 14:24:11,385 INFO L471 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) [2021-11-19 14:24:11,386 INFO L276 IsEmpty]: Start isEmpty. Operand 2945 states and 6804 transitions. [2021-11-19 14:24:11,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-19 14:24:11,387 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:24:11,387 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:24:11,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2021-11-19 14:24:11,388 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-19 14:24:11,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:24:11,388 INFO L85 PathProgramCache]: Analyzing trace with hash -998762342, now seen corresponding path program 16 times [2021-11-19 14:24:11,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:24:11,388 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852150237] [2021-11-19 14:24:11,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:24:11,388 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:24:11,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:24:13,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:24:13,129 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:24:13,129 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852150237] [2021-11-19 14:24:13,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852150237] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:24:13,129 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:24:13,129 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-19 14:24:13,130 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848060583] [2021-11-19 14:24:13,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:24:13,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-19 14:24:13,130 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:24:13,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-19 14:24:13,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2021-11-19 14:24:13,131 INFO L87 Difference]: Start difference. First operand 2945 states and 6804 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) [2021-11-19 14:24:21,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:24:21,035 INFO L93 Difference]: Finished difference Result 4452 states and 10145 transitions. [2021-11-19 14:24:21,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-19 14:24:21,036 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 [2021-11-19 14:24:21,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:24:21,041 INFO L225 Difference]: With dead ends: 4452 [2021-11-19 14:24:21,041 INFO L226 Difference]: Without dead ends: 4452 [2021-11-19 14:24:21,042 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 375 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=369, Invalid=1701, Unknown=0, NotChecked=0, Total=2070 [2021-11-19 14:24:21,042 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 655 mSDsluCounter, 604 mSDsCounter, 0 mSdLazyCounter, 5504 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 655 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 5570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 5504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2021-11-19 14:24:21,042 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [655 Valid, 34 Invalid, 5570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 5504 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2021-11-19 14:24:21,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4452 states. [2021-11-19 14:24:21,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4452 to 2976. [2021-11-19 14:24:21,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2976 states, 2966 states have (on average 2.317936614969656) internal successors, (6875), 2975 states have internal predecessors, (6875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:24:21,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2976 states to 2976 states and 6875 transitions. [2021-11-19 14:24:21,087 INFO L78 Accepts]: Start accepts. Automaton has 2976 states and 6875 transitions. Word has length 20 [2021-11-19 14:24:21,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:24:21,087 INFO L470 AbstractCegarLoop]: Abstraction has 2976 states and 6875 transitions. [2021-11-19 14:24:21,087 INFO L471 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) [2021-11-19 14:24:21,087 INFO L276 IsEmpty]: Start isEmpty. Operand 2976 states and 6875 transitions. [2021-11-19 14:24:21,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-19 14:24:21,088 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:24:21,089 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:24:21,089 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2021-11-19 14:24:21,089 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-19 14:24:21,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:24:21,089 INFO L85 PathProgramCache]: Analyzing trace with hash -967003372, now seen corresponding path program 17 times [2021-11-19 14:24:21,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:24:21,089 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713148458] [2021-11-19 14:24:21,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:24:21,090 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:24:21,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:24:22,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:24:22,780 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:24:22,780 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713148458] [2021-11-19 14:24:22,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713148458] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:24:22,780 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:24:22,781 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-19 14:24:22,781 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278128442] [2021-11-19 14:24:22,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:24:22,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-19 14:24:22,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:24:22,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-19 14:24:22,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2021-11-19 14:24:22,781 INFO L87 Difference]: Start difference. First operand 2976 states and 6875 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) [2021-11-19 14:24:29,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:24:29,533 INFO L93 Difference]: Finished difference Result 4493 states and 10259 transitions. [2021-11-19 14:24:29,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-19 14:24:29,534 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 [2021-11-19 14:24:29,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:24:29,539 INFO L225 Difference]: With dead ends: 4493 [2021-11-19 14:24:29,539 INFO L226 Difference]: Without dead ends: 4493 [2021-11-19 14:24:29,539 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=361, Invalid=1199, Unknown=0, NotChecked=0, Total=1560 [2021-11-19 14:24:29,540 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 601 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 4465 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 601 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 4496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 4465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:24:29,540 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [601 Valid, 34 Invalid, 4496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 4465 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2021-11-19 14:24:29,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4493 states. [2021-11-19 14:24:29,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4493 to 2910. [2021-11-19 14:24:29,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2910 states, 2900 states have (on average 2.31551724137931) internal successors, (6715), 2909 states have internal predecessors, (6715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:24:29,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2910 states to 2910 states and 6715 transitions. [2021-11-19 14:24:29,583 INFO L78 Accepts]: Start accepts. Automaton has 2910 states and 6715 transitions. Word has length 20 [2021-11-19 14:24:29,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:24:29,583 INFO L470 AbstractCegarLoop]: Abstraction has 2910 states and 6715 transitions. [2021-11-19 14:24:29,583 INFO L471 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) [2021-11-19 14:24:29,583 INFO L276 IsEmpty]: Start isEmpty. Operand 2910 states and 6715 transitions. [2021-11-19 14:24:29,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-19 14:24:29,584 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:24:29,585 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:24:29,585 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2021-11-19 14:24:29,585 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-19 14:24:29,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:24:29,585 INFO L85 PathProgramCache]: Analyzing trace with hash -286405738, now seen corresponding path program 1 times [2021-11-19 14:24:29,585 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:24:29,585 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092939065] [2021-11-19 14:24:29,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:24:29,585 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:24:29,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:24:29,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:24:29,985 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:24:29,985 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092939065] [2021-11-19 14:24:29,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092939065] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:24:29,985 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:24:29,985 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-19 14:24:29,985 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253101637] [2021-11-19 14:24:29,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:24:29,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-19 14:24:29,986 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:24:29,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-19 14:24:29,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-11-19 14:24:29,986 INFO L87 Difference]: Start difference. First operand 2910 states and 6715 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) [2021-11-19 14:24:31,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:24:31,912 INFO L93 Difference]: Finished difference Result 3566 states and 8143 transitions. [2021-11-19 14:24:31,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-19 14:24:31,912 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 [2021-11-19 14:24:31,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:24:31,917 INFO L225 Difference]: With dead ends: 3566 [2021-11-19 14:24:31,917 INFO L226 Difference]: Without dead ends: 3566 [2021-11-19 14:24:31,917 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2021-11-19 14:24:31,917 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 233 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 1768 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 1781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-19 14:24:31,918 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [233 Valid, 17 Invalid, 1781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1768 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-19 14:24:31,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3566 states. [2021-11-19 14:24:31,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3566 to 2948. [2021-11-19 14:24:31,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2948 states, 2938 states have (on average 2.3185840707964602) internal successors, (6812), 2947 states have internal predecessors, (6812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:24:31,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2948 states to 2948 states and 6812 transitions. [2021-11-19 14:24:31,958 INFO L78 Accepts]: Start accepts. Automaton has 2948 states and 6812 transitions. Word has length 21 [2021-11-19 14:24:31,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:24:31,958 INFO L470 AbstractCegarLoop]: Abstraction has 2948 states and 6812 transitions. [2021-11-19 14:24:31,958 INFO L471 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) [2021-11-19 14:24:31,958 INFO L276 IsEmpty]: Start isEmpty. Operand 2948 states and 6812 transitions. [2021-11-19 14:24:31,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-19 14:24:31,960 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:24:31,960 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:24:31,960 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2021-11-19 14:24:31,960 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-19 14:24:31,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:24:31,961 INFO L85 PathProgramCache]: Analyzing trace with hash 698122332, now seen corresponding path program 2 times [2021-11-19 14:24:31,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:24:31,961 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351433996] [2021-11-19 14:24:31,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:24:31,961 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:24:31,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:24:33,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:24:33,419 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:24:33,419 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351433996] [2021-11-19 14:24:33,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351433996] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:24:33,419 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:24:33,419 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-19 14:24:33,420 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208910801] [2021-11-19 14:24:33,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:24:33,420 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-19 14:24:33,420 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:24:33,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-19 14:24:33,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=323, Unknown=0, NotChecked=0, Total=380 [2021-11-19 14:24:33,420 INFO L87 Difference]: Start difference. First operand 2948 states and 6812 transitions. Second operand has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 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) [2021-11-19 14:24:44,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:24:44,398 INFO L93 Difference]: Finished difference Result 5672 states and 12847 transitions. [2021-11-19 14:24:44,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-11-19 14:24:44,398 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 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 [2021-11-19 14:24:44,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:24:44,405 INFO L225 Difference]: With dead ends: 5672 [2021-11-19 14:24:44,405 INFO L226 Difference]: Without dead ends: 5672 [2021-11-19 14:24:44,405 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 622 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=540, Invalid=2430, Unknown=0, NotChecked=0, Total=2970 [2021-11-19 14:24:44,405 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 879 mSDsluCounter, 831 mSDsCounter, 0 mSdLazyCounter, 7266 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 879 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 7395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 7266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2021-11-19 14:24:44,406 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [879 Valid, 35 Invalid, 7395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 7266 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2021-11-19 14:24:44,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5672 states. [2021-11-19 14:24:44,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5672 to 2999. [2021-11-19 14:24:44,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2999 states, 2989 states have (on average 2.3195048511207763) internal successors, (6933), 2998 states have internal predecessors, (6933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:24:44,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2999 states to 2999 states and 6933 transitions. [2021-11-19 14:24:44,457 INFO L78 Accepts]: Start accepts. Automaton has 2999 states and 6933 transitions. Word has length 21 [2021-11-19 14:24:44,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:24:44,457 INFO L470 AbstractCegarLoop]: Abstraction has 2999 states and 6933 transitions. [2021-11-19 14:24:44,457 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 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) [2021-11-19 14:24:44,457 INFO L276 IsEmpty]: Start isEmpty. Operand 2999 states and 6933 transitions. [2021-11-19 14:24:44,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-19 14:24:44,459 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:24:44,459 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:24:44,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2021-11-19 14:24:44,459 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-19 14:24:44,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:24:44,460 INFO L85 PathProgramCache]: Analyzing trace with hash 1831465724, now seen corresponding path program 3 times [2021-11-19 14:24:44,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:24:44,460 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3400192] [2021-11-19 14:24:44,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:24:44,460 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:24:44,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:24:44,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:24:44,713 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:24:44,713 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3400192] [2021-11-19 14:24:44,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3400192] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:24:44,713 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:24:44,713 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-19 14:24:44,713 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177632478] [2021-11-19 14:24:44,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:24:44,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-19 14:24:44,714 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:24:44,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-19 14:24:44,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:24:44,714 INFO L87 Difference]: Start difference. First operand 2999 states and 6933 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) [2021-11-19 14:24:46,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:24:46,597 INFO L93 Difference]: Finished difference Result 3888 states and 8852 transitions. [2021-11-19 14:24:46,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 14:24:46,597 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 [2021-11-19 14:24:46,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:24:46,602 INFO L225 Difference]: With dead ends: 3888 [2021-11-19 14:24:46,602 INFO L226 Difference]: Without dead ends: 3888 [2021-11-19 14:24:46,602 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=108, Invalid=234, Unknown=0, NotChecked=0, Total=342 [2021-11-19 14:24:46,602 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 317 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 1449 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 1470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-19 14:24:46,602 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [317 Valid, 32 Invalid, 1470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1449 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-19 14:24:46,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3888 states. [2021-11-19 14:24:46,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3888 to 3051. [2021-11-19 14:24:46,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3051 states, 3041 states have (on average 2.319960539296284) internal successors, (7055), 3050 states have internal predecessors, (7055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:24:46,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3051 states to 3051 states and 7055 transitions. [2021-11-19 14:24:46,643 INFO L78 Accepts]: Start accepts. Automaton has 3051 states and 7055 transitions. Word has length 21 [2021-11-19 14:24:46,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:24:46,644 INFO L470 AbstractCegarLoop]: Abstraction has 3051 states and 7055 transitions. [2021-11-19 14:24:46,644 INFO L471 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) [2021-11-19 14:24:46,644 INFO L276 IsEmpty]: Start isEmpty. Operand 3051 states and 7055 transitions. [2021-11-19 14:24:46,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-19 14:24:46,645 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:24:46,645 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:24:46,646 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2021-11-19 14:24:46,646 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-19 14:24:46,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:24:46,646 INFO L85 PathProgramCache]: Analyzing trace with hash 1835242454, now seen corresponding path program 4 times [2021-11-19 14:24:46,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:24:46,646 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394744866] [2021-11-19 14:24:46,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:24:46,646 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:24:46,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:24:48,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:24:48,610 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:24:48,610 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394744866] [2021-11-19 14:24:48,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394744866] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:24:48,610 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:24:48,610 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-19 14:24:48,610 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788608097] [2021-11-19 14:24:48,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:24:48,610 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-19 14:24:48,610 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:24:48,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-19 14:24:48,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2021-11-19 14:24:48,611 INFO L87 Difference]: Start difference. First operand 3051 states and 7055 transitions. Second operand has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 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) [2021-11-19 14:24:55,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:24:55,683 INFO L93 Difference]: Finished difference Result 4824 states and 11056 transitions. [2021-11-19 14:24:55,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-11-19 14:24:55,683 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 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 [2021-11-19 14:24:55,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:24:55,689 INFO L225 Difference]: With dead ends: 4824 [2021-11-19 14:24:55,689 INFO L226 Difference]: Without dead ends: 4824 [2021-11-19 14:24:55,689 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 362 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=411, Invalid=1659, Unknown=0, NotChecked=0, Total=2070 [2021-11-19 14:24:55,689 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 619 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 4284 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 619 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 4366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 4284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2021-11-19 14:24:55,690 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [619 Valid, 35 Invalid, 4366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 4284 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2021-11-19 14:24:55,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4824 states. [2021-11-19 14:24:55,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4824 to 3059. [2021-11-19 14:24:55,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3059 states, 3049 states have (on average 2.321416857986225) internal successors, (7078), 3058 states have internal predecessors, (7078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:24:55,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3059 states to 3059 states and 7078 transitions. [2021-11-19 14:24:55,736 INFO L78 Accepts]: Start accepts. Automaton has 3059 states and 7078 transitions. Word has length 21 [2021-11-19 14:24:55,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:24:55,736 INFO L470 AbstractCegarLoop]: Abstraction has 3059 states and 7078 transitions. [2021-11-19 14:24:55,736 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 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) [2021-11-19 14:24:55,736 INFO L276 IsEmpty]: Start isEmpty. Operand 3059 states and 7078 transitions. [2021-11-19 14:24:55,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-19 14:24:55,738 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:24:55,738 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:24:55,738 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2021-11-19 14:24:55,738 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-19 14:24:55,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:24:55,738 INFO L85 PathProgramCache]: Analyzing trace with hash -1277758066, now seen corresponding path program 1 times [2021-11-19 14:24:55,738 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:24:55,739 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427428021] [2021-11-19 14:24:55,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:24:55,739 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:24:55,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:24:55,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:24:55,872 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:24:55,872 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427428021] [2021-11-19 14:24:55,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427428021] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:24:55,873 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:24:55,873 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-19 14:24:55,873 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830810377] [2021-11-19 14:24:55,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:24:55,873 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 14:24:55,873 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:24:55,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 14:24:55,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-19 14:24:55,873 INFO L87 Difference]: Start difference. First operand 3059 states and 7078 transitions. Second operand has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 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) [2021-11-19 14:24:57,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:24:57,933 INFO L93 Difference]: Finished difference Result 7149 states and 16110 transitions. [2021-11-19 14:24:57,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-19 14:24:57,934 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 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 [2021-11-19 14:24:57,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:24:57,944 INFO L225 Difference]: With dead ends: 7149 [2021-11-19 14:24:57,944 INFO L226 Difference]: Without dead ends: 7125 [2021-11-19 14:24:57,944 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=228, Invalid=584, Unknown=0, NotChecked=0, Total=812 [2021-11-19 14:24:57,944 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 941 mSDsluCounter, 521 mSDsCounter, 0 mSdLazyCounter, 2148 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 941 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 2213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 2148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-11-19 14:24:57,945 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [941 Valid, 82 Invalid, 2213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 2148 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-11-19 14:24:57,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7125 states. [2021-11-19 14:24:57,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7125 to 3165. [2021-11-19 14:24:58,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3165 states, 3155 states have (on average 2.3182250396196515) internal successors, (7314), 3164 states have internal predecessors, (7314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:24:58,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3165 states to 3165 states and 7314 transitions. [2021-11-19 14:24:58,007 INFO L78 Accepts]: Start accepts. Automaton has 3165 states and 7314 transitions. Word has length 21 [2021-11-19 14:24:58,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:24:58,007 INFO L470 AbstractCegarLoop]: Abstraction has 3165 states and 7314 transitions. [2021-11-19 14:24:58,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 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) [2021-11-19 14:24:58,008 INFO L276 IsEmpty]: Start isEmpty. Operand 3165 states and 7314 transitions. [2021-11-19 14:24:58,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-19 14:24:58,009 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:24:58,009 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:24:58,010 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2021-11-19 14:24:58,010 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-19 14:24:58,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:24:58,010 INFO L85 PathProgramCache]: Analyzing trace with hash -1671461424, now seen corresponding path program 5 times [2021-11-19 14:24:58,010 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:24:58,010 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823208825] [2021-11-19 14:24:58,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:24:58,010 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:24:58,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:24:58,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:24:58,381 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:24:58,381 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823208825] [2021-11-19 14:24:58,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823208825] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:24:58,381 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:24:58,381 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-19 14:24:58,381 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450396227] [2021-11-19 14:24:58,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:24:58,381 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-19 14:24:58,382 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:24:58,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-19 14:24:58,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-11-19 14:24:58,382 INFO L87 Difference]: Start difference. First operand 3165 states and 7314 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) [2021-11-19 14:25:00,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:25:00,420 INFO L93 Difference]: Finished difference Result 3793 states and 8660 transitions. [2021-11-19 14:25:00,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 14:25:00,421 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 [2021-11-19 14:25:00,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:25:00,426 INFO L225 Difference]: With dead ends: 3793 [2021-11-19 14:25:00,426 INFO L226 Difference]: Without dead ends: 3793 [2021-11-19 14:25:00,426 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=125, Invalid=295, Unknown=0, NotChecked=0, Total=420 [2021-11-19 14:25:00,426 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 397 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 1516 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 397 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 1539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-19 14:25:00,426 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [397 Valid, 17 Invalid, 1539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1516 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-19 14:25:00,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3793 states. [2021-11-19 14:25:00,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3793 to 3176. [2021-11-19 14:25:00,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3176 states, 3166 states have (on average 2.316171825647505) internal successors, (7333), 3175 states have internal predecessors, (7333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:25:00,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3176 states to 3176 states and 7333 transitions. [2021-11-19 14:25:00,470 INFO L78 Accepts]: Start accepts. Automaton has 3176 states and 7333 transitions. Word has length 21 [2021-11-19 14:25:00,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:25:00,470 INFO L470 AbstractCegarLoop]: Abstraction has 3176 states and 7333 transitions. [2021-11-19 14:25:00,470 INFO L471 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) [2021-11-19 14:25:00,470 INFO L276 IsEmpty]: Start isEmpty. Operand 3176 states and 7333 transitions. [2021-11-19 14:25:00,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-19 14:25:00,472 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:25:00,472 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:25:00,472 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2021-11-19 14:25:00,472 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-19 14:25:00,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:25:00,473 INFO L85 PathProgramCache]: Analyzing trace with hash -686933354, now seen corresponding path program 6 times [2021-11-19 14:25:00,473 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:25:00,473 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957490432] [2021-11-19 14:25:00,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:25:00,473 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:25:00,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:25:01,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:25:01,303 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:25:01,303 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957490432] [2021-11-19 14:25:01,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957490432] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:25:01,303 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:25:01,303 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-19 14:25:01,304 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323420129] [2021-11-19 14:25:01,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:25:01,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-19 14:25:01,304 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:25:01,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-19 14:25:01,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2021-11-19 14:25:01,304 INFO L87 Difference]: Start difference. First operand 3176 states and 7333 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) [2021-11-19 14:25:04,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:25:04,379 INFO L93 Difference]: Finished difference Result 4883 states and 11199 transitions. [2021-11-19 14:25:04,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-19 14:25:04,379 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 [2021-11-19 14:25:04,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:25:04,386 INFO L225 Difference]: With dead ends: 4883 [2021-11-19 14:25:04,386 INFO L226 Difference]: Without dead ends: 4883 [2021-11-19 14:25:04,386 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=250, Invalid=742, Unknown=0, NotChecked=0, Total=992 [2021-11-19 14:25:04,386 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 636 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 2827 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 636 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 2893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 2827 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:25:04,386 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [636 Valid, 35 Invalid, 2893 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 2827 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-11-19 14:25:04,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4883 states. [2021-11-19 14:25:04,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4883 to 3246. [2021-11-19 14:25:04,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3246 states, 3236 states have (on average 2.322929542645241) internal successors, (7517), 3245 states have internal predecessors, (7517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:25:04,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3246 states to 3246 states and 7517 transitions. [2021-11-19 14:25:04,437 INFO L78 Accepts]: Start accepts. Automaton has 3246 states and 7517 transitions. Word has length 21 [2021-11-19 14:25:04,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:25:04,437 INFO L470 AbstractCegarLoop]: Abstraction has 3246 states and 7517 transitions. [2021-11-19 14:25:04,437 INFO L471 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) [2021-11-19 14:25:04,437 INFO L276 IsEmpty]: Start isEmpty. Operand 3246 states and 7517 transitions. [2021-11-19 14:25:04,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-19 14:25:04,439 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:25:04,439 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:25:04,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2021-11-19 14:25:04,439 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-19 14:25:04,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:25:04,440 INFO L85 PathProgramCache]: Analyzing trace with hash 446410038, now seen corresponding path program 7 times [2021-11-19 14:25:04,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:25:04,440 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320086183] [2021-11-19 14:25:04,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:25:04,440 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:25:04,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:25:04,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:25:04,645 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:25:04,645 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320086183] [2021-11-19 14:25:04,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320086183] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:25:04,645 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:25:04,645 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-19 14:25:04,645 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674936299] [2021-11-19 14:25:04,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:25:04,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-19 14:25:04,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:25:04,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-19 14:25:04,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:25:04,646 INFO L87 Difference]: Start difference. First operand 3246 states and 7517 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) [2021-11-19 14:25:06,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:25:06,404 INFO L93 Difference]: Finished difference Result 4038 states and 9225 transitions. [2021-11-19 14:25:06,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-19 14:25:06,404 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 [2021-11-19 14:25:06,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:25:06,410 INFO L225 Difference]: With dead ends: 4038 [2021-11-19 14:25:06,410 INFO L226 Difference]: Without dead ends: 4038 [2021-11-19 14:25:06,410 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=119, Invalid=261, Unknown=0, NotChecked=0, Total=380 [2021-11-19 14:25:06,410 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 315 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 1779 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 1799 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1779 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:25:06,410 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [315 Valid, 32 Invalid, 1799 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1779 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-19 14:25:06,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4038 states. [2021-11-19 14:25:06,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4038 to 3246. [2021-11-19 14:25:06,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3246 states, 3236 states have (on average 2.323547589616811) internal successors, (7519), 3245 states have internal predecessors, (7519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:25:06,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3246 states to 3246 states and 7519 transitions. [2021-11-19 14:25:06,457 INFO L78 Accepts]: Start accepts. Automaton has 3246 states and 7519 transitions. Word has length 21 [2021-11-19 14:25:06,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:25:06,457 INFO L470 AbstractCegarLoop]: Abstraction has 3246 states and 7519 transitions. [2021-11-19 14:25:06,457 INFO L471 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) [2021-11-19 14:25:06,457 INFO L276 IsEmpty]: Start isEmpty. Operand 3246 states and 7519 transitions. [2021-11-19 14:25:06,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-19 14:25:06,459 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:25:06,460 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:25:06,460 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2021-11-19 14:25:06,460 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-19 14:25:06,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:25:06,460 INFO L85 PathProgramCache]: Analyzing trace with hash 450186768, now seen corresponding path program 8 times [2021-11-19 14:25:06,461 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:25:06,461 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160971182] [2021-11-19 14:25:06,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:25:06,461 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:25:06,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:25:08,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:25:08,416 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:25:08,416 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160971182] [2021-11-19 14:25:08,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160971182] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:25:08,416 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:25:08,416 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-19 14:25:08,416 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489129784] [2021-11-19 14:25:08,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:25:08,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-19 14:25:08,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:25:08,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-19 14:25:08,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2021-11-19 14:25:08,434 INFO L87 Difference]: Start difference. First operand 3246 states and 7519 transitions. Second operand has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 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) [2021-11-19 14:25:16,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:25:16,069 INFO L93 Difference]: Finished difference Result 5084 states and 11653 transitions. [2021-11-19 14:25:16,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-19 14:25:16,070 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 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 [2021-11-19 14:25:16,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:25:16,076 INFO L225 Difference]: With dead ends: 5084 [2021-11-19 14:25:16,076 INFO L226 Difference]: Without dead ends: 5084 [2021-11-19 14:25:16,076 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 348 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=429, Invalid=1641, Unknown=0, NotChecked=0, Total=2070 [2021-11-19 14:25:16,076 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 596 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 5284 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 596 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 5355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 5284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2021-11-19 14:25:16,076 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [596 Valid, 35 Invalid, 5355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 5284 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2021-11-19 14:25:16,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5084 states. [2021-11-19 14:25:16,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5084 to 3249. [2021-11-19 14:25:16,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3249 states, 3239 states have (on average 2.3244828650818152) internal successors, (7529), 3248 states have internal predecessors, (7529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:25:16,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3249 states to 3249 states and 7529 transitions. [2021-11-19 14:25:16,126 INFO L78 Accepts]: Start accepts. Automaton has 3249 states and 7529 transitions. Word has length 21 [2021-11-19 14:25:16,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:25:16,126 INFO L470 AbstractCegarLoop]: Abstraction has 3249 states and 7529 transitions. [2021-11-19 14:25:16,126 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 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) [2021-11-19 14:25:16,127 INFO L276 IsEmpty]: Start isEmpty. Operand 3249 states and 7529 transitions. [2021-11-19 14:25:16,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-19 14:25:16,129 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:25:16,129 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:25:16,129 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2021-11-19 14:25:16,129 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-19 14:25:16,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:25:16,130 INFO L85 PathProgramCache]: Analyzing trace with hash -994720252, now seen corresponding path program 9 times [2021-11-19 14:25:16,130 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:25:16,130 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203114024] [2021-11-19 14:25:16,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:25:16,130 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:25:16,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:25:19,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:25:19,081 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:25:19,081 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203114024] [2021-11-19 14:25:19,081 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203114024] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:25:19,082 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:25:19,082 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-19 14:25:19,082 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466431664] [2021-11-19 14:25:19,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:25:19,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-19 14:25:19,086 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:25:19,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-19 14:25:19,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2021-11-19 14:25:19,087 INFO L87 Difference]: Start difference. First operand 3249 states and 7529 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) [2021-11-19 14:25:27,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:25:27,557 INFO L93 Difference]: Finished difference Result 5398 states and 12363 transitions. [2021-11-19 14:25:27,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-19 14:25:27,557 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 [2021-11-19 14:25:27,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:25:27,564 INFO L225 Difference]: With dead ends: 5398 [2021-11-19 14:25:27,564 INFO L226 Difference]: Without dead ends: 5398 [2021-11-19 14:25:27,564 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=381, Invalid=1689, Unknown=0, NotChecked=0, Total=2070 [2021-11-19 14:25:27,564 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 1194 mSDsluCounter, 629 mSDsCounter, 0 mSdLazyCounter, 5481 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1194 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 5599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 5481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:25:27,564 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1194 Valid, 34 Invalid, 5599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 5481 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2021-11-19 14:25:27,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5398 states. [2021-11-19 14:25:27,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5398 to 3287. [2021-11-19 14:25:27,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3287 states, 3277 states have (on average 2.324382056759231) internal successors, (7617), 3286 states have internal predecessors, (7617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:25:27,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3287 states to 3287 states and 7617 transitions. [2021-11-19 14:25:27,617 INFO L78 Accepts]: Start accepts. Automaton has 3287 states and 7617 transitions. Word has length 21 [2021-11-19 14:25:27,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:25:27,618 INFO L470 AbstractCegarLoop]: Abstraction has 3287 states and 7617 transitions. [2021-11-19 14:25:27,618 INFO L471 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) [2021-11-19 14:25:27,618 INFO L276 IsEmpty]: Start isEmpty. Operand 3287 states and 7617 transitions. [2021-11-19 14:25:27,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-19 14:25:27,619 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:25:27,619 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:25:27,619 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2021-11-19 14:25:27,619 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-19 14:25:27,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:25:27,620 INFO L85 PathProgramCache]: Analyzing trace with hash -10192182, now seen corresponding path program 10 times [2021-11-19 14:25:27,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:25:27,620 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039065938] [2021-11-19 14:25:27,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:25:27,620 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:25:27,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:25:28,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:25:28,904 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:25:28,904 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039065938] [2021-11-19 14:25:28,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039065938] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:25:28,904 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:25:28,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-19 14:25:28,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836201977] [2021-11-19 14:25:28,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:25:28,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-19 14:25:28,905 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:25:28,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-19 14:25:28,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=326, Unknown=0, NotChecked=0, Total=380 [2021-11-19 14:25:28,905 INFO L87 Difference]: Start difference. First operand 3287 states and 7617 transitions. Second operand has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 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) [2021-11-19 14:25:38,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:25:38,041 INFO L93 Difference]: Finished difference Result 5739 states and 13131 transitions. [2021-11-19 14:25:38,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-11-19 14:25:38,042 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 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 [2021-11-19 14:25:38,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:25:38,048 INFO L225 Difference]: With dead ends: 5739 [2021-11-19 14:25:38,049 INFO L226 Difference]: Without dead ends: 5739 [2021-11-19 14:25:38,049 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 489 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=547, Invalid=2105, Unknown=0, NotChecked=0, Total=2652 [2021-11-19 14:25:38,049 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 1349 mSDsluCounter, 615 mSDsCounter, 0 mSdLazyCounter, 5090 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1349 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 5192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 5090 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:25:38,049 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1349 Valid, 35 Invalid, 5192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 5090 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2021-11-19 14:25:38,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5739 states. [2021-11-19 14:25:38,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5739 to 3223. [2021-11-19 14:25:38,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3223 states, 3213 states have (on average 2.321817615935263) internal successors, (7460), 3222 states have internal predecessors, (7460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:25:38,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3223 states to 3223 states and 7460 transitions. [2021-11-19 14:25:38,116 INFO L78 Accepts]: Start accepts. Automaton has 3223 states and 7460 transitions. Word has length 21 [2021-11-19 14:25:38,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:25:38,117 INFO L470 AbstractCegarLoop]: Abstraction has 3223 states and 7460 transitions. [2021-11-19 14:25:38,117 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 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) [2021-11-19 14:25:38,117 INFO L276 IsEmpty]: Start isEmpty. Operand 3223 states and 7460 transitions. [2021-11-19 14:25:38,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-19 14:25:38,118 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:25:38,118 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:25:38,118 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2021-11-19 14:25:38,118 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-19 14:25:38,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:25:38,119 INFO L85 PathProgramCache]: Analyzing trace with hash 1363865414, now seen corresponding path program 1 times [2021-11-19 14:25:38,119 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:25:38,119 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689931450] [2021-11-19 14:25:38,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:25:38,119 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:25:38,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:25:38,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:25:38,582 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:25:38,582 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689931450] [2021-11-19 14:25:38,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689931450] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:25:38,582 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:25:38,582 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-19 14:25:38,582 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045791946] [2021-11-19 14:25:38,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:25:38,582 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-19 14:25:38,582 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:25:38,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-19 14:25:38,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-11-19 14:25:38,583 INFO L87 Difference]: Start difference. First operand 3223 states and 7460 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) [2021-11-19 14:25:41,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:25:41,011 INFO L93 Difference]: Finished difference Result 5140 states and 11603 transitions. [2021-11-19 14:25:41,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 14:25:41,012 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 [2021-11-19 14:25:41,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:25:41,018 INFO L225 Difference]: With dead ends: 5140 [2021-11-19 14:25:41,018 INFO L226 Difference]: Without dead ends: 5118 [2021-11-19 14:25:41,018 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=112, Invalid=350, Unknown=0, NotChecked=0, Total=462 [2021-11-19 14:25:41,019 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 445 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 2508 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 445 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 2539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 2508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-11-19 14:25:41,019 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [445 Valid, 35 Invalid, 2539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 2508 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-11-19 14:25:41,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5118 states. [2021-11-19 14:25:41,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5118 to 3219. [2021-11-19 14:25:41,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3219 states, 3209 states have (on average 2.320972265503272) internal successors, (7448), 3218 states have internal predecessors, (7448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:25:41,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3219 states to 3219 states and 7448 transitions. [2021-11-19 14:25:41,068 INFO L78 Accepts]: Start accepts. Automaton has 3219 states and 7448 transitions. Word has length 21 [2021-11-19 14:25:41,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:25:41,068 INFO L470 AbstractCegarLoop]: Abstraction has 3219 states and 7448 transitions. [2021-11-19 14:25:41,068 INFO L471 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) [2021-11-19 14:25:41,068 INFO L276 IsEmpty]: Start isEmpty. Operand 3219 states and 7448 transitions. [2021-11-19 14:25:41,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-19 14:25:41,069 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:25:41,069 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:25:41,070 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2021-11-19 14:25:41,070 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-19 14:25:41,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:25:41,070 INFO L85 PathProgramCache]: Analyzing trace with hash -329528118, now seen corresponding path program 11 times [2021-11-19 14:25:41,070 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:25:41,070 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391594422] [2021-11-19 14:25:41,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:25:41,070 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:25:41,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:25:41,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:25:41,451 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:25:41,451 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391594422] [2021-11-19 14:25:41,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391594422] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:25:41,452 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:25:41,452 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-19 14:25:41,452 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265404955] [2021-11-19 14:25:41,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:25:41,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-19 14:25:41,452 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:25:41,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-19 14:25:41,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-11-19 14:25:41,453 INFO L87 Difference]: Start difference. First operand 3219 states and 7448 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) [2021-11-19 14:25:43,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:25:43,726 INFO L93 Difference]: Finished difference Result 3615 states and 8325 transitions. [2021-11-19 14:25:43,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-19 14:25:43,727 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 [2021-11-19 14:25:43,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:25:43,731 INFO L225 Difference]: With dead ends: 3615 [2021-11-19 14:25:43,731 INFO L226 Difference]: Without dead ends: 3615 [2021-11-19 14:25:43,731 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2021-11-19 14:25:43,732 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 243 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 2227 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 2240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 2227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-11-19 14:25:43,732 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [243 Valid, 17 Invalid, 2240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 2227 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-11-19 14:25:43,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3615 states. [2021-11-19 14:25:43,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3615 to 3247. [2021-11-19 14:25:43,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3247 states, 3237 states have (on average 2.32159406858202) internal successors, (7515), 3246 states have internal predecessors, (7515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:25:43,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3247 states to 3247 states and 7515 transitions. [2021-11-19 14:25:43,773 INFO L78 Accepts]: Start accepts. Automaton has 3247 states and 7515 transitions. Word has length 21 [2021-11-19 14:25:43,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:25:43,773 INFO L470 AbstractCegarLoop]: Abstraction has 3247 states and 7515 transitions. [2021-11-19 14:25:43,773 INFO L471 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) [2021-11-19 14:25:43,773 INFO L276 IsEmpty]: Start isEmpty. Operand 3247 states and 7515 transitions. [2021-11-19 14:25:43,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-19 14:25:43,774 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:25:43,774 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:25:43,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2021-11-19 14:25:43,775 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-19 14:25:43,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:25:43,775 INFO L85 PathProgramCache]: Analyzing trace with hash 654999952, now seen corresponding path program 12 times [2021-11-19 14:25:43,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:25:43,775 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939240913] [2021-11-19 14:25:43,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:25:43,775 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:25:43,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:25:45,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:25:45,299 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:25:45,299 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939240913] [2021-11-19 14:25:45,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939240913] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:25:45,299 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:25:45,299 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-19 14:25:45,299 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536125505] [2021-11-19 14:25:45,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:25:45,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-19 14:25:45,300 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:25:45,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-19 14:25:45,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=324, Unknown=0, NotChecked=0, Total=380 [2021-11-19 14:25:45,300 INFO L87 Difference]: Start difference. First operand 3247 states and 7515 transitions. Second operand has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 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) [2021-11-19 14:25:56,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:25:56,532 INFO L93 Difference]: Finished difference Result 5675 states and 12933 transitions. [2021-11-19 14:25:56,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-11-19 14:25:56,532 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 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 [2021-11-19 14:25:56,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:25:56,539 INFO L225 Difference]: With dead ends: 5675 [2021-11-19 14:25:56,539 INFO L226 Difference]: Without dead ends: 5675 [2021-11-19 14:25:56,540 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 701 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=554, Invalid=2638, Unknown=0, NotChecked=0, Total=3192 [2021-11-19 14:25:56,540 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 827 mSDsluCounter, 898 mSDsCounter, 0 mSdLazyCounter, 8227 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 827 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 8326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 8227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2021-11-19 14:25:56,540 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [827 Valid, 35 Invalid, 8326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 8227 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2021-11-19 14:25:56,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5675 states. [2021-11-19 14:25:56,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5675 to 3249. [2021-11-19 14:25:56,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3249 states, 3239 states have (on average 2.3223217042297004) internal successors, (7522), 3248 states have internal predecessors, (7522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:25:56,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3249 states to 3249 states and 7522 transitions. [2021-11-19 14:25:56,613 INFO L78 Accepts]: Start accepts. Automaton has 3249 states and 7522 transitions. Word has length 21 [2021-11-19 14:25:56,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:25:56,613 INFO L470 AbstractCegarLoop]: Abstraction has 3249 states and 7522 transitions. [2021-11-19 14:25:56,613 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 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) [2021-11-19 14:25:56,614 INFO L276 IsEmpty]: Start isEmpty. Operand 3249 states and 7522 transitions. [2021-11-19 14:25:56,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-19 14:25:56,615 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:25:56,615 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:25:56,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2021-11-19 14:25:56,615 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-19 14:25:56,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:25:56,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1788343344, now seen corresponding path program 13 times [2021-11-19 14:25:56,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:25:56,616 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105588837] [2021-11-19 14:25:56,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:25:56,616 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:25:56,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:25:56,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:25:56,844 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:25:56,845 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105588837] [2021-11-19 14:25:56,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105588837] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:25:56,845 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:25:56,845 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-19 14:25:56,845 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693148083] [2021-11-19 14:25:56,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:25:56,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-19 14:25:56,845 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:25:56,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-19 14:25:56,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:25:56,846 INFO L87 Difference]: Start difference. First operand 3249 states and 7522 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) [2021-11-19 14:25:58,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:25:58,354 INFO L93 Difference]: Finished difference Result 4010 states and 9179 transitions. [2021-11-19 14:25:58,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-19 14:25:58,355 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 [2021-11-19 14:25:58,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:25:58,360 INFO L225 Difference]: With dead ends: 4010 [2021-11-19 14:25:58,360 INFO L226 Difference]: Without dead ends: 4010 [2021-11-19 14:25:58,360 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2021-11-19 14:25:58,360 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 249 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 1781 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 1792 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:25:58,362 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [249 Valid, 32 Invalid, 1792 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1781 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-19 14:25:58,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4010 states. [2021-11-19 14:25:58,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4010 to 3269. [2021-11-19 14:25:58,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3269 states, 3259 states have (on average 2.3227984044185335) internal successors, (7570), 3268 states have internal predecessors, (7570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:25:58,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3269 states to 3269 states and 7570 transitions. [2021-11-19 14:25:58,428 INFO L78 Accepts]: Start accepts. Automaton has 3269 states and 7570 transitions. Word has length 21 [2021-11-19 14:25:58,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:25:58,429 INFO L470 AbstractCegarLoop]: Abstraction has 3269 states and 7570 transitions. [2021-11-19 14:25:58,429 INFO L471 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) [2021-11-19 14:25:58,429 INFO L276 IsEmpty]: Start isEmpty. Operand 3269 states and 7570 transitions. [2021-11-19 14:25:58,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-19 14:25:58,431 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:25:58,431 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:25:58,431 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2021-11-19 14:25:58,432 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-19 14:25:58,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:25:58,432 INFO L85 PathProgramCache]: Analyzing trace with hash 1792120074, now seen corresponding path program 14 times [2021-11-19 14:25:58,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:25:58,432 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804054280] [2021-11-19 14:25:58,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:25:58,433 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:25:58,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:26:00,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:26:00,341 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:26:00,341 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804054280] [2021-11-19 14:26:00,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804054280] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:26:00,341 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:26:00,341 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-19 14:26:00,341 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222406976] [2021-11-19 14:26:00,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:26:00,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-19 14:26:00,342 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:26:00,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-19 14:26:00,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2021-11-19 14:26:00,342 INFO L87 Difference]: Start difference. First operand 3269 states and 7570 transitions. Second operand has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 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) [2021-11-19 14:26:08,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:26:08,855 INFO L93 Difference]: Finished difference Result 5019 states and 11531 transitions. [2021-11-19 14:26:08,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-11-19 14:26:08,856 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 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 [2021-11-19 14:26:08,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:26:08,863 INFO L225 Difference]: With dead ends: 5019 [2021-11-19 14:26:08,863 INFO L226 Difference]: Without dead ends: 5019 [2021-11-19 14:26:08,863 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 472 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=457, Invalid=1993, Unknown=0, NotChecked=0, Total=2450 [2021-11-19 14:26:08,864 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 619 mSDsluCounter, 530 mSDsCounter, 0 mSdLazyCounter, 5128 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 619 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 5214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 5128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:26:08,864 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [619 Valid, 35 Invalid, 5214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 5128 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2021-11-19 14:26:08,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5019 states. [2021-11-19 14:26:08,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5019 to 3277. [2021-11-19 14:26:08,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3277 states, 3267 states have (on average 2.3241505968778697) internal successors, (7593), 3276 states have internal predecessors, (7593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:26:08,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3277 states to 3277 states and 7593 transitions. [2021-11-19 14:26:08,950 INFO L78 Accepts]: Start accepts. Automaton has 3277 states and 7593 transitions. Word has length 21 [2021-11-19 14:26:08,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:26:08,950 INFO L470 AbstractCegarLoop]: Abstraction has 3277 states and 7593 transitions. [2021-11-19 14:26:08,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 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) [2021-11-19 14:26:08,950 INFO L276 IsEmpty]: Start isEmpty. Operand 3277 states and 7593 transitions. [2021-11-19 14:26:08,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-19 14:26:08,952 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:26:08,952 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:26:08,952 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2021-11-19 14:26:08,952 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-19 14:26:08,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:26:08,953 INFO L85 PathProgramCache]: Analyzing trace with hash -1714583804, now seen corresponding path program 15 times [2021-11-19 14:26:08,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:26:08,953 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280001611] [2021-11-19 14:26:08,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:26:08,953 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:26:08,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:26:09,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:26:09,284 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:26:09,284 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280001611] [2021-11-19 14:26:09,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280001611] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:26:09,284 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:26:09,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-19 14:26:09,285 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581459533] [2021-11-19 14:26:09,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:26:09,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-19 14:26:09,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:26:09,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-19 14:26:09,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-19 14:26:09,285 INFO L87 Difference]: Start difference. First operand 3277 states and 7593 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) [2021-11-19 14:26:12,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:26:12,084 INFO L93 Difference]: Finished difference Result 3802 states and 8733 transitions. [2021-11-19 14:26:12,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 14:26:12,084 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 [2021-11-19 14:26:12,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:26:12,090 INFO L225 Difference]: With dead ends: 3802 [2021-11-19 14:26:12,090 INFO L226 Difference]: Without dead ends: 3802 [2021-11-19 14:26:12,090 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2021-11-19 14:26:12,090 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 303 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 2544 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 2565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 2544 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:26:12,091 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [303 Valid, 17 Invalid, 2565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 2544 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-11-19 14:26:12,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3802 states. [2021-11-19 14:26:12,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3802 to 3304. [2021-11-19 14:26:12,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3304 states, 3294 states have (on average 2.3221007893139043) internal successors, (7649), 3303 states have internal predecessors, (7649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:26:12,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3304 states to 3304 states and 7649 transitions. [2021-11-19 14:26:12,164 INFO L78 Accepts]: Start accepts. Automaton has 3304 states and 7649 transitions. Word has length 21 [2021-11-19 14:26:12,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:26:12,164 INFO L470 AbstractCegarLoop]: Abstraction has 3304 states and 7649 transitions. [2021-11-19 14:26:12,164 INFO L471 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) [2021-11-19 14:26:12,164 INFO L276 IsEmpty]: Start isEmpty. Operand 3304 states and 7649 transitions. [2021-11-19 14:26:12,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-19 14:26:12,166 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:26:12,166 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:26:12,166 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2021-11-19 14:26:12,166 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-19 14:26:12,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:26:12,167 INFO L85 PathProgramCache]: Analyzing trace with hash -730055734, now seen corresponding path program 16 times [2021-11-19 14:26:12,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:26:12,167 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214318918] [2021-11-19 14:26:12,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:26:12,168 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:26:12,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:26:13,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:26:13,077 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:26:13,077 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214318918] [2021-11-19 14:26:13,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214318918] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:26:13,077 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:26:13,077 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-19 14:26:13,077 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929053978] [2021-11-19 14:26:13,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:26:13,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-19 14:26:13,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:26:13,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-19 14:26:13,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2021-11-19 14:26:13,078 INFO L87 Difference]: Start difference. First operand 3304 states and 7649 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) [2021-11-19 14:26:17,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:26:17,064 INFO L93 Difference]: Finished difference Result 4988 states and 11469 transitions. [2021-11-19 14:26:17,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-19 14:26:17,064 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 [2021-11-19 14:26:17,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:26:17,071 INFO L225 Difference]: With dead ends: 4988 [2021-11-19 14:26:17,071 INFO L226 Difference]: Without dead ends: 4988 [2021-11-19 14:26:17,071 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=303, Invalid=957, Unknown=0, NotChecked=0, Total=1260 [2021-11-19 14:26:17,071 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 647 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 3257 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 647 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 3321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 3257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-11-19 14:26:17,072 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [647 Valid, 35 Invalid, 3321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 3257 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-11-19 14:26:17,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4988 states. [2021-11-19 14:26:17,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4988 to 3323. [2021-11-19 14:26:17,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3323 states, 3313 states have (on average 2.322668276486568) internal successors, (7695), 3322 states have internal predecessors, (7695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:26:17,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3323 states to 3323 states and 7695 transitions. [2021-11-19 14:26:17,124 INFO L78 Accepts]: Start accepts. Automaton has 3323 states and 7695 transitions. Word has length 21 [2021-11-19 14:26:17,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:26:17,124 INFO L470 AbstractCegarLoop]: Abstraction has 3323 states and 7695 transitions. [2021-11-19 14:26:17,124 INFO L471 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) [2021-11-19 14:26:17,124 INFO L276 IsEmpty]: Start isEmpty. Operand 3323 states and 7695 transitions. [2021-11-19 14:26:17,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-19 14:26:17,130 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:26:17,130 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:26:17,130 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2021-11-19 14:26:17,130 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-19 14:26:17,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:26:17,131 INFO L85 PathProgramCache]: Analyzing trace with hash 403287658, now seen corresponding path program 17 times [2021-11-19 14:26:17,131 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:26:17,132 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829718078] [2021-11-19 14:26:17,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:26:17,132 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:26:17,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:26:17,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:26:17,369 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:26:17,369 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829718078] [2021-11-19 14:26:17,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829718078] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:26:17,369 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:26:17,369 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-19 14:26:17,369 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898466220] [2021-11-19 14:26:17,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:26:17,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-19 14:26:17,370 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:26:17,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-19 14:26:17,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:26:17,370 INFO L87 Difference]: Start difference. First operand 3323 states and 7695 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) [2021-11-19 14:26:19,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:26:19,203 INFO L93 Difference]: Finished difference Result 4130 states and 9442 transitions. [2021-11-19 14:26:19,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 14:26:19,204 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 [2021-11-19 14:26:19,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:26:19,209 INFO L225 Difference]: With dead ends: 4130 [2021-11-19 14:26:19,210 INFO L226 Difference]: Without dead ends: 4130 [2021-11-19 14:26:19,210 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2021-11-19 14:26:19,210 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 307 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 1858 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 1870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1858 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-19 14:26:19,210 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [307 Valid, 32 Invalid, 1870 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1858 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-19 14:26:19,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4130 states. [2021-11-19 14:26:19,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4130 to 3316. [2021-11-19 14:26:19,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3316 states, 3306 states have (on average 2.323049001814882) internal successors, (7680), 3315 states have internal predecessors, (7680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:26:19,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3316 states to 3316 states and 7680 transitions. [2021-11-19 14:26:19,258 INFO L78 Accepts]: Start accepts. Automaton has 3316 states and 7680 transitions. Word has length 21 [2021-11-19 14:26:19,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:26:19,258 INFO L470 AbstractCegarLoop]: Abstraction has 3316 states and 7680 transitions. [2021-11-19 14:26:19,258 INFO L471 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) [2021-11-19 14:26:19,258 INFO L276 IsEmpty]: Start isEmpty. Operand 3316 states and 7680 transitions. [2021-11-19 14:26:19,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-19 14:26:19,260 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:26:19,260 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:26:19,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2021-11-19 14:26:19,260 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-19 14:26:19,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:26:19,260 INFO L85 PathProgramCache]: Analyzing trace with hash 407064388, now seen corresponding path program 18 times [2021-11-19 14:26:19,261 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:26:19,261 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406840823] [2021-11-19 14:26:19,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:26:19,261 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:26:19,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:26:21,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:26:21,145 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:26:21,145 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406840823] [2021-11-19 14:26:21,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406840823] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:26:21,145 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:26:21,145 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-19 14:26:21,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376722373] [2021-11-19 14:26:21,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:26:21,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-19 14:26:21,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:26:21,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-19 14:26:21,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2021-11-19 14:26:21,146 INFO L87 Difference]: Start difference. First operand 3316 states and 7680 transitions. Second operand has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 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) [2021-11-19 14:26:29,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:26:29,309 INFO L93 Difference]: Finished difference Result 5101 states and 11719 transitions. [2021-11-19 14:26:29,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-11-19 14:26:29,310 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 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 [2021-11-19 14:26:29,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:26:29,316 INFO L225 Difference]: With dead ends: 5101 [2021-11-19 14:26:29,316 INFO L226 Difference]: Without dead ends: 5101 [2021-11-19 14:26:29,317 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 460 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=472, Invalid=1978, Unknown=0, NotChecked=0, Total=2450 [2021-11-19 14:26:29,317 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 690 mSDsluCounter, 529 mSDsCounter, 0 mSdLazyCounter, 5242 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 690 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 5323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 5242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2021-11-19 14:26:29,317 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [690 Valid, 35 Invalid, 5323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 5242 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2021-11-19 14:26:29,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5101 states. [2021-11-19 14:26:29,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5101 to 3319. [2021-11-19 14:26:29,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3319 states, 3309 states have (on average 2.3239649440918706) internal successors, (7690), 3318 states have internal predecessors, (7690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:26:29,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3319 states to 3319 states and 7690 transitions. [2021-11-19 14:26:29,384 INFO L78 Accepts]: Start accepts. Automaton has 3319 states and 7690 transitions. Word has length 21 [2021-11-19 14:26:29,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:26:29,384 INFO L470 AbstractCegarLoop]: Abstraction has 3319 states and 7690 transitions. [2021-11-19 14:26:29,384 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 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) [2021-11-19 14:26:29,384 INFO L276 IsEmpty]: Start isEmpty. Operand 3319 states and 7690 transitions. [2021-11-19 14:26:29,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-19 14:26:29,387 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:26:29,387 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:26:29,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2021-11-19 14:26:29,387 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-19 14:26:29,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:26:29,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1037842632, now seen corresponding path program 19 times [2021-11-19 14:26:29,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:26:29,388 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453706391] [2021-11-19 14:26:29,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:26:29,388 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:26:29,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:26:32,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:26:32,305 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:26:32,305 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453706391] [2021-11-19 14:26:32,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453706391] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:26:32,305 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:26:32,306 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-19 14:26:32,306 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481427665] [2021-11-19 14:26:32,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:26:32,306 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-19 14:26:32,306 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:26:32,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-19 14:26:32,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2021-11-19 14:26:32,307 INFO L87 Difference]: Start difference. First operand 3319 states and 7690 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) [2021-11-19 14:26:41,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:26:41,622 INFO L93 Difference]: Finished difference Result 5337 states and 12259 transitions. [2021-11-19 14:26:41,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-11-19 14:26:41,623 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 [2021-11-19 14:26:41,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:26:41,629 INFO L225 Difference]: With dead ends: 5337 [2021-11-19 14:26:41,629 INFO L226 Difference]: Without dead ends: 5337 [2021-11-19 14:26:41,630 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 503 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=428, Invalid=2022, Unknown=0, NotChecked=0, Total=2450 [2021-11-19 14:26:41,630 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 1124 mSDsluCounter, 615 mSDsCounter, 0 mSdLazyCounter, 5439 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1124 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 5553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 5439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2021-11-19 14:26:41,630 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1124 Valid, 34 Invalid, 5553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 5439 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2021-11-19 14:26:41,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5337 states. [2021-11-19 14:26:41,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5337 to 3364. [2021-11-19 14:26:41,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3364 states, 3354 states have (on average 2.323494335122242) internal successors, (7793), 3363 states have internal predecessors, (7793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:26:41,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3364 states to 3364 states and 7793 transitions. [2021-11-19 14:26:41,685 INFO L78 Accepts]: Start accepts. Automaton has 3364 states and 7793 transitions. Word has length 21 [2021-11-19 14:26:41,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:26:41,686 INFO L470 AbstractCegarLoop]: Abstraction has 3364 states and 7793 transitions. [2021-11-19 14:26:41,686 INFO L471 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) [2021-11-19 14:26:41,686 INFO L276 IsEmpty]: Start isEmpty. Operand 3364 states and 7793 transitions. [2021-11-19 14:26:41,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-19 14:26:41,687 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:26:41,687 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:26:41,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2021-11-19 14:26:41,688 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-19 14:26:41,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:26:41,688 INFO L85 PathProgramCache]: Analyzing trace with hash -53314562, now seen corresponding path program 20 times [2021-11-19 14:26:41,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:26:41,689 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395234616] [2021-11-19 14:26:41,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:26:41,689 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:26:41,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:26:42,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:26:42,853 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:26:42,853 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395234616] [2021-11-19 14:26:42,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395234616] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:26:42,853 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:26:42,853 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-19 14:26:42,853 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284841433] [2021-11-19 14:26:42,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:26:42,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-19 14:26:42,854 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:26:42,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-19 14:26:42,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=326, Unknown=0, NotChecked=0, Total=380 [2021-11-19 14:26:42,854 INFO L87 Difference]: Start difference. First operand 3364 states and 7793 transitions. Second operand has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 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) [2021-11-19 14:26:54,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:26:54,942 INFO L93 Difference]: Finished difference Result 5859 states and 13441 transitions. [2021-11-19 14:26:54,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-11-19 14:26:54,943 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 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 [2021-11-19 14:26:54,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:26:54,951 INFO L225 Difference]: With dead ends: 5859 [2021-11-19 14:26:54,951 INFO L226 Difference]: Without dead ends: 5859 [2021-11-19 14:26:54,951 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 663 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=591, Invalid=2489, Unknown=0, NotChecked=0, Total=3080 [2021-11-19 14:26:54,952 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 986 mSDsluCounter, 962 mSDsCounter, 0 mSdLazyCounter, 8292 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 986 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 8372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 8292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2021-11-19 14:26:54,952 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [986 Valid, 35 Invalid, 8372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 8292 Invalid, 0 Unknown, 0 Unchecked, 7.7s Time] [2021-11-19 14:26:54,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5859 states. [2021-11-19 14:26:55,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5859 to 3266. [2021-11-19 14:26:55,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3266 states, 3256 states have (on average 2.3215601965601964) internal successors, (7559), 3265 states have internal predecessors, (7559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:26:55,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3266 states to 3266 states and 7559 transitions. [2021-11-19 14:26:55,012 INFO L78 Accepts]: Start accepts. Automaton has 3266 states and 7559 transitions. Word has length 21 [2021-11-19 14:26:55,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:26:55,012 INFO L470 AbstractCegarLoop]: Abstraction has 3266 states and 7559 transitions. [2021-11-19 14:26:55,012 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 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) [2021-11-19 14:26:55,012 INFO L276 IsEmpty]: Start isEmpty. Operand 3266 states and 7559 transitions. [2021-11-19 14:26:55,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-19 14:26:55,014 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:26:55,014 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:26:55,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2021-11-19 14:26:55,014 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-19 14:26:55,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:26:55,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1556675290, now seen corresponding path program 2 times [2021-11-19 14:26:55,027 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:26:55,027 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578896530] [2021-11-19 14:26:55,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:26:55,027 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:26:55,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:26:55,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:26:55,189 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:26:55,190 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578896530] [2021-11-19 14:26:55,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578896530] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:26:55,190 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:26:55,190 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-19 14:26:55,190 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271257172] [2021-11-19 14:26:55,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:26:55,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 14:26:55,190 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:26:55,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 14:26:55,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-19 14:26:55,191 INFO L87 Difference]: Start difference. First operand 3266 states and 7559 transitions. Second operand has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 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) [2021-11-19 14:26:58,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:26:58,753 INFO L93 Difference]: Finished difference Result 12458 states and 28163 transitions. [2021-11-19 14:26:58,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-19 14:26:58,753 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 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 [2021-11-19 14:26:58,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:26:58,775 INFO L225 Difference]: With dead ends: 12458 [2021-11-19 14:26:58,775 INFO L226 Difference]: Without dead ends: 12419 [2021-11-19 14:26:58,775 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 317 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=391, Invalid=1169, Unknown=0, NotChecked=0, Total=1560 [2021-11-19 14:26:58,775 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 934 mSDsluCounter, 905 mSDsCounter, 0 mSdLazyCounter, 3634 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 934 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 3687 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 3634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-11-19 14:26:58,775 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [934 Valid, 161 Invalid, 3687 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 3634 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-11-19 14:26:58,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12419 states. [2021-11-19 14:26:58,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12419 to 3274. [2021-11-19 14:26:58,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3274 states, 3264 states have (on average 2.3216911764705883) internal successors, (7578), 3273 states have internal predecessors, (7578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:26:58,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3274 states to 3274 states and 7578 transitions. [2021-11-19 14:26:58,897 INFO L78 Accepts]: Start accepts. Automaton has 3274 states and 7578 transitions. Word has length 21 [2021-11-19 14:26:58,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:26:58,897 INFO L470 AbstractCegarLoop]: Abstraction has 3274 states and 7578 transitions. [2021-11-19 14:26:58,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 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) [2021-11-19 14:26:58,898 INFO L276 IsEmpty]: Start isEmpty. Operand 3274 states and 7578 transitions. [2021-11-19 14:26:58,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-19 14:26:58,899 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:26:58,899 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:26:58,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2021-11-19 14:26:58,899 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-19 14:26:58,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:26:58,900 INFO L85 PathProgramCache]: Analyzing trace with hash 2054747582, now seen corresponding path program 3 times [2021-11-19 14:26:58,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:26:58,900 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797915890] [2021-11-19 14:26:58,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:26:58,901 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:26:58,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:26:59,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:26:59,023 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:26:59,023 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797915890] [2021-11-19 14:26:59,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797915890] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:26:59,023 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:26:59,023 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-19 14:26:59,023 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870913313] [2021-11-19 14:26:59,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:26:59,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 14:26:59,024 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:26:59,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 14:26:59,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-19 14:26:59,024 INFO L87 Difference]: Start difference. First operand 3274 states and 7578 transitions. Second operand has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 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) [2021-11-19 14:27:01,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:27:01,982 INFO L93 Difference]: Finished difference Result 9999 states and 22656 transitions. [2021-11-19 14:27:01,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-19 14:27:01,982 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 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 [2021-11-19 14:27:01,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:27:01,998 INFO L225 Difference]: With dead ends: 9999 [2021-11-19 14:27:01,999 INFO L226 Difference]: Without dead ends: 9960 [2021-11-19 14:27:01,999 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=292, Invalid=830, Unknown=0, NotChecked=0, Total=1122 [2021-11-19 14:27:01,999 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 801 mSDsluCounter, 757 mSDsCounter, 0 mSdLazyCounter, 3291 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 801 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 3331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 3291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-19 14:27:01,999 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [801 Valid, 133 Invalid, 3331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 3291 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-11-19 14:27:02,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9960 states. [2021-11-19 14:27:02,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9960 to 3214. [2021-11-19 14:27:02,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3214 states, 3204 states have (on average 2.3220973782771535) internal successors, (7440), 3213 states have internal predecessors, (7440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:27:02,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3214 states to 3214 states and 7440 transitions. [2021-11-19 14:27:02,107 INFO L78 Accepts]: Start accepts. Automaton has 3214 states and 7440 transitions. Word has length 21 [2021-11-19 14:27:02,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:27:02,107 INFO L470 AbstractCegarLoop]: Abstraction has 3214 states and 7440 transitions. [2021-11-19 14:27:02,107 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 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) [2021-11-19 14:27:02,107 INFO L276 IsEmpty]: Start isEmpty. Operand 3214 states and 7440 transitions. [2021-11-19 14:27:02,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-19 14:27:02,109 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:27:02,109 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:27:02,109 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2021-11-19 14:27:02,109 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-19 14:27:02,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:27:02,109 INFO L85 PathProgramCache]: Analyzing trace with hash 903936930, now seen corresponding path program 21 times [2021-11-19 14:27:02,109 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:27:02,110 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797614187] [2021-11-19 14:27:02,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:27:02,110 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:27:02,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:27:02,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:27:02,657 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:27:02,657 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797614187] [2021-11-19 14:27:02,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797614187] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:27:02,658 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:27:02,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-19 14:27:02,658 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201323631] [2021-11-19 14:27:02,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:27:02,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-19 14:27:02,658 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:27:02,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-19 14:27:02,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2021-11-19 14:27:02,658 INFO L87 Difference]: Start difference. First operand 3214 states and 7440 transitions. Second operand has 16 states, 16 states have (on average 1.3125) internal successors, (21), 15 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) [2021-11-19 14:27:06,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:27:06,255 INFO L93 Difference]: Finished difference Result 4376 states and 9860 transitions. [2021-11-19 14:27:06,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-19 14:27:06,256 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.3125) internal successors, (21), 15 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 [2021-11-19 14:27:06,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:27:06,261 INFO L225 Difference]: With dead ends: 4376 [2021-11-19 14:27:06,261 INFO L226 Difference]: Without dead ends: 4375 [2021-11-19 14:27:06,261 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=198, Invalid=614, Unknown=0, NotChecked=0, Total=812 [2021-11-19 14:27:06,262 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 735 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 3185 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 735 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 3235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 3185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-11-19 14:27:06,262 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [735 Valid, 45 Invalid, 3235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 3185 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-11-19 14:27:06,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4375 states. [2021-11-19 14:27:06,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4375 to 3427. [2021-11-19 14:27:06,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3427 states, 3409 states have (on average 2.3024347315928426) internal successors, (7849), 3426 states have internal predecessors, (7849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:27:06,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3427 states to 3427 states and 7849 transitions. [2021-11-19 14:27:06,313 INFO L78 Accepts]: Start accepts. Automaton has 3427 states and 7849 transitions. Word has length 21 [2021-11-19 14:27:06,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:27:06,313 INFO L470 AbstractCegarLoop]: Abstraction has 3427 states and 7849 transitions. [2021-11-19 14:27:06,314 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.3125) internal successors, (21), 15 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) [2021-11-19 14:27:06,314 INFO L276 IsEmpty]: Start isEmpty. Operand 3427 states and 7849 transitions. [2021-11-19 14:27:06,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-19 14:27:06,315 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:27:06,316 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:27:06,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2021-11-19 14:27:06,316 INFO L402 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-19 14:27:06,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:27:06,316 INFO L85 PathProgramCache]: Analyzing trace with hash 1888465000, now seen corresponding path program 22 times [2021-11-19 14:27:06,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:27:06,317 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169363466] [2021-11-19 14:27:06,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:27:06,317 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:27:06,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:27:07,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:27:07,702 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:27:07,702 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169363466] [2021-11-19 14:27:07,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169363466] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:27:07,702 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:27:07,703 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-19 14:27:07,703 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880394556] [2021-11-19 14:27:07,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:27:07,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-19 14:27:07,703 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:27:07,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-19 14:27:07,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2021-11-19 14:27:07,704 INFO L87 Difference]: Start difference. First operand 3427 states and 7849 transitions. Second operand has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 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) [2021-11-19 14:27:16,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:27:16,523 INFO L93 Difference]: Finished difference Result 5930 states and 13465 transitions. [2021-11-19 14:27:16,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-11-19 14:27:16,523 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 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 [2021-11-19 14:27:16,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:27:16,530 INFO L225 Difference]: With dead ends: 5930 [2021-11-19 14:27:16,531 INFO L226 Difference]: Without dead ends: 5930 [2021-11-19 14:27:16,531 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 684 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=585, Invalid=2495, Unknown=0, NotChecked=0, Total=3080 [2021-11-19 14:27:16,531 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 932 mSDsluCounter, 674 mSDsCounter, 0 mSdLazyCounter, 5913 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 932 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 6014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 5913 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:27:16,531 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [932 Valid, 35 Invalid, 6014 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 5913 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2021-11-19 14:27:16,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5930 states. [2021-11-19 14:27:16,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5930 to 3429. [2021-11-19 14:27:16,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3429 states, 3411 states have (on average 2.303136909997068) internal successors, (7856), 3428 states have internal predecessors, (7856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:27:16,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3429 states to 3429 states and 7856 transitions. [2021-11-19 14:27:16,589 INFO L78 Accepts]: Start accepts. Automaton has 3429 states and 7856 transitions. Word has length 21 [2021-11-19 14:27:16,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:27:16,589 INFO L470 AbstractCegarLoop]: Abstraction has 3429 states and 7856 transitions. [2021-11-19 14:27:16,590 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 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) [2021-11-19 14:27:16,590 INFO L276 IsEmpty]: Start isEmpty. Operand 3429 states and 7856 transitions. [2021-11-19 14:27:16,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-19 14:27:16,591 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:27:16,591 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:27:16,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2021-11-19 14:27:16,592 INFO L402 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-19 14:27:16,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:27:16,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1273158904, now seen corresponding path program 23 times [2021-11-19 14:27:16,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:27:16,592 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530420554] [2021-11-19 14:27:16,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:27:16,592 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:27:16,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:27:16,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:27:16,829 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:27:16,829 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530420554] [2021-11-19 14:27:16,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530420554] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:27:16,829 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:27:16,829 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-19 14:27:16,829 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591180681] [2021-11-19 14:27:16,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:27:16,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-19 14:27:16,829 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:27:16,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-19 14:27:16,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:27:16,830 INFO L87 Difference]: Start difference. First operand 3429 states and 7856 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) [2021-11-19 14:27:18,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:27:18,636 INFO L93 Difference]: Finished difference Result 4007 states and 9108 transitions. [2021-11-19 14:27:18,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-19 14:27:18,637 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 [2021-11-19 14:27:18,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:27:18,642 INFO L225 Difference]: With dead ends: 4007 [2021-11-19 14:27:18,642 INFO L226 Difference]: Without dead ends: 4007 [2021-11-19 14:27:18,642 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2021-11-19 14:27:18,643 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 251 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 2143 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 2152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 2143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-19 14:27:18,643 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [251 Valid, 32 Invalid, 2152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 2143 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-11-19 14:27:18,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4007 states. [2021-11-19 14:27:18,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4007 to 3436. [2021-11-19 14:27:18,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3436 states, 3418 states have (on average 2.302808660035108) internal successors, (7871), 3435 states have internal predecessors, (7871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:27:18,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3436 states to 3436 states and 7871 transitions. [2021-11-19 14:27:18,693 INFO L78 Accepts]: Start accepts. Automaton has 3436 states and 7871 transitions. Word has length 21 [2021-11-19 14:27:18,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:27:18,693 INFO L470 AbstractCegarLoop]: Abstraction has 3436 states and 7871 transitions. [2021-11-19 14:27:18,693 INFO L471 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) [2021-11-19 14:27:18,693 INFO L276 IsEmpty]: Start isEmpty. Operand 3436 states and 7871 transitions. [2021-11-19 14:27:18,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-19 14:27:18,695 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:27:18,695 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:27:18,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2021-11-19 14:27:18,695 INFO L402 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-19 14:27:18,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:27:18,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1269382174, now seen corresponding path program 24 times [2021-11-19 14:27:18,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:27:18,696 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878148055] [2021-11-19 14:27:18,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:27:18,696 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:27:18,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:27:20,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:27:20,548 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:27:20,548 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878148055] [2021-11-19 14:27:20,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878148055] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:27:20,548 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:27:20,548 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-19 14:27:20,548 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591412280] [2021-11-19 14:27:20,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:27:20,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-19 14:27:20,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:27:20,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-19 14:27:20,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2021-11-19 14:27:20,549 INFO L87 Difference]: Start difference. First operand 3436 states and 7871 transitions. Second operand has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 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) [2021-11-19 14:27:31,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:27:31,112 INFO L93 Difference]: Finished difference Result 5458 states and 12428 transitions. [2021-11-19 14:27:31,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-11-19 14:27:31,113 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 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 [2021-11-19 14:27:31,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:27:31,119 INFO L225 Difference]: With dead ends: 5458 [2021-11-19 14:27:31,119 INFO L226 Difference]: Without dead ends: 5458 [2021-11-19 14:27:31,120 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 791 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=680, Invalid=2980, Unknown=0, NotChecked=0, Total=3660 [2021-11-19 14:27:31,120 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 739 mSDsluCounter, 601 mSDsCounter, 0 mSdLazyCounter, 6279 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 739 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 6392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 6279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2021-11-19 14:27:31,120 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [739 Valid, 35 Invalid, 6392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 6279 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2021-11-19 14:27:31,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5458 states. [2021-11-19 14:27:31,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5458 to 3448. [2021-11-19 14:27:31,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3448 states, 3430 states have (on average 2.3043731778425656) internal successors, (7904), 3447 states have internal predecessors, (7904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:27:31,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3448 states to 3448 states and 7904 transitions. [2021-11-19 14:27:31,175 INFO L78 Accepts]: Start accepts. Automaton has 3448 states and 7904 transitions. Word has length 21 [2021-11-19 14:27:31,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:27:31,175 INFO L470 AbstractCegarLoop]: Abstraction has 3448 states and 7904 transitions. [2021-11-19 14:27:31,175 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 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) [2021-11-19 14:27:31,175 INFO L276 IsEmpty]: Start isEmpty. Operand 3448 states and 7904 transitions. [2021-11-19 14:27:31,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-19 14:27:31,177 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:27:31,177 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:27:31,177 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2021-11-19 14:27:31,177 INFO L402 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-19 14:27:31,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:27:31,177 INFO L85 PathProgramCache]: Analyzing trace with hash 1580678102, now seen corresponding path program 25 times [2021-11-19 14:27:31,177 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:27:31,178 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882089053] [2021-11-19 14:27:31,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:27:31,178 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:27:31,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:27:34,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:27:34,094 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:27:34,094 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882089053] [2021-11-19 14:27:34,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882089053] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:27:34,094 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:27:34,094 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-19 14:27:34,094 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209470195] [2021-11-19 14:27:34,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:27:34,094 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-19 14:27:34,094 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:27:34,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-19 14:27:34,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2021-11-19 14:27:34,095 INFO L87 Difference]: Start difference. First operand 3448 states and 7904 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) [2021-11-19 14:27:46,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:27:46,990 INFO L93 Difference]: Finished difference Result 5401 states and 12257 transitions. [2021-11-19 14:27:46,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-11-19 14:27:46,991 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 [2021-11-19 14:27:46,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:27:46,997 INFO L225 Difference]: With dead ends: 5401 [2021-11-19 14:27:46,998 INFO L226 Difference]: Without dead ends: 5401 [2021-11-19 14:27:46,998 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 775 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=632, Invalid=2790, Unknown=0, NotChecked=0, Total=3422 [2021-11-19 14:27:46,998 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 1121 mSDsluCounter, 813 mSDsCounter, 0 mSdLazyCounter, 7504 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1121 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 7605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 7504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2021-11-19 14:27:46,998 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1121 Valid, 34 Invalid, 7605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 7504 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2021-11-19 14:27:47,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5401 states. [2021-11-19 14:27:47,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5401 to 3486. [2021-11-19 14:27:47,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3486 states, 3468 states have (on average 2.3044982698961936) internal successors, (7992), 3485 states have internal predecessors, (7992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:27:47,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3486 states to 3486 states and 7992 transitions. [2021-11-19 14:27:47,055 INFO L78 Accepts]: Start accepts. Automaton has 3486 states and 7992 transitions. Word has length 21 [2021-11-19 14:27:47,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:27:47,055 INFO L470 AbstractCegarLoop]: Abstraction has 3486 states and 7992 transitions. [2021-11-19 14:27:47,055 INFO L471 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) [2021-11-19 14:27:47,055 INFO L276 IsEmpty]: Start isEmpty. Operand 3486 states and 7992 transitions. [2021-11-19 14:27:47,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-19 14:27:47,057 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:27:47,057 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:27:47,057 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2021-11-19 14:27:47,057 INFO L402 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-19 14:27:47,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:27:47,057 INFO L85 PathProgramCache]: Analyzing trace with hash -1729761124, now seen corresponding path program 26 times [2021-11-19 14:27:47,057 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:27:47,057 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744543462] [2021-11-19 14:27:47,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:27:47,058 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:27:47,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:27:48,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:27:48,350 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:27:48,350 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744543462] [2021-11-19 14:27:48,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744543462] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:27:48,350 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:27:48,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-19 14:27:48,351 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127929490] [2021-11-19 14:27:48,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:27:48,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-19 14:27:48,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:27:48,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-19 14:27:48,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2021-11-19 14:27:48,351 INFO L87 Difference]: Start difference. First operand 3486 states and 7992 transitions. Second operand has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 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) [2021-11-19 14:27:59,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:27:59,773 INFO L93 Difference]: Finished difference Result 5883 states and 13379 transitions. [2021-11-19 14:27:59,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-11-19 14:27:59,773 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 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 [2021-11-19 14:27:59,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:27:59,781 INFO L225 Difference]: With dead ends: 5883 [2021-11-19 14:27:59,781 INFO L226 Difference]: Without dead ends: 5883 [2021-11-19 14:27:59,781 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 690 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=594, Invalid=2598, Unknown=0, NotChecked=0, Total=3192 [2021-11-19 14:27:59,781 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 1042 mSDsluCounter, 872 mSDsCounter, 0 mSdLazyCounter, 7487 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1042 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 7566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 7487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2021-11-19 14:27:59,781 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1042 Valid, 35 Invalid, 7566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 7487 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2021-11-19 14:27:59,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5883 states. [2021-11-19 14:27:59,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5883 to 3427. [2021-11-19 14:27:59,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3427 states, 3409 states have (on average 2.3024347315928426) internal successors, (7849), 3426 states have internal predecessors, (7849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:27:59,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3427 states to 3427 states and 7849 transitions. [2021-11-19 14:27:59,840 INFO L78 Accepts]: Start accepts. Automaton has 3427 states and 7849 transitions. Word has length 21 [2021-11-19 14:27:59,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:27:59,840 INFO L470 AbstractCegarLoop]: Abstraction has 3427 states and 7849 transitions. [2021-11-19 14:27:59,841 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 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) [2021-11-19 14:27:59,841 INFO L276 IsEmpty]: Start isEmpty. Operand 3427 states and 7849 transitions. [2021-11-19 14:27:59,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-19 14:27:59,842 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:27:59,842 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:27:59,842 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2021-11-19 14:27:59,843 INFO L402 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-19 14:27:59,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:27:59,843 INFO L85 PathProgramCache]: Analyzing trace with hash -2047475318, now seen corresponding path program 27 times [2021-11-19 14:27:59,843 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:27:59,843 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422552704] [2021-11-19 14:27:59,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:27:59,844 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:27:59,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:28:03,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:28:03,112 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:28:03,112 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422552704] [2021-11-19 14:28:03,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422552704] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:28:03,112 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:28:03,112 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-19 14:28:03,113 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522147925] [2021-11-19 14:28:03,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:28:03,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-19 14:28:03,113 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:28:03,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-19 14:28:03,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2021-11-19 14:28:03,113 INFO L87 Difference]: Start difference. First operand 3427 states and 7849 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)