./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf2e9086-7250-4272-be0c-0352f88f4c8e/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf2e9086-7250-4272-be0c-0352f88f4c8e/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf2e9086-7250-4272-be0c-0352f88f4c8e/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf2e9086-7250-4272-be0c-0352f88f4c8e/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf2e9086-7250-4272-be0c-0352f88f4c8e/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf2e9086-7250-4272-be0c-0352f88f4c8e/bin/utaipan-vmNK8stdcF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 92ab77284c41e8949aa8a67882902909eedb25047f32a3303bcd08767adce507 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 22:41:30,074 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 22:41:30,078 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 22:41:30,117 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 22:41:30,117 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 22:41:30,119 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 22:41:30,121 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 22:41:30,123 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 22:41:30,125 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 22:41:30,126 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 22:41:30,128 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 22:41:30,129 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 22:41:30,131 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 22:41:30,135 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 22:41:30,138 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 22:41:30,141 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 22:41:30,144 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 22:41:30,151 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 22:41:30,154 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 22:41:30,156 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 22:41:30,160 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 22:41:30,164 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 22:41:30,166 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 22:41:30,168 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 22:41:30,172 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 22:41:30,177 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 22:41:30,178 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 22:41:30,179 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 22:41:30,181 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 22:41:30,182 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 22:41:30,183 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 22:41:30,184 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 22:41:30,185 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 22:41:30,186 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 22:41:30,187 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 22:41:30,188 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 22:41:30,188 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 22:41:30,189 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 22:41:30,189 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 22:41:30,190 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 22:41:30,191 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 22:41:30,192 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf2e9086-7250-4272-be0c-0352f88f4c8e/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-12 22:41:30,240 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 22:41:30,241 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 22:41:30,242 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 22:41:30,242 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 22:41:30,243 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 22:41:30,243 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 22:41:30,243 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 22:41:30,243 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 22:41:30,244 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 22:41:30,244 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 22:41:30,245 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 22:41:30,245 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 22:41:30,245 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 22:41:30,246 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 22:41:30,246 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 22:41:30,246 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 22:41:30,247 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 22:41:30,247 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 22:41:30,247 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 22:41:30,248 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 22:41:30,248 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 22:41:30,248 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 22:41:30,248 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 22:41:30,249 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 22:41:30,249 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 22:41:30,249 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 22:41:30,249 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 22:41:30,249 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 22:41:30,250 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 22:41:30,252 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 22:41:30,252 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 22:41:30,252 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:41:30,253 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 22:41:30,253 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 22:41:30,253 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 22:41:30,253 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 22:41:30,254 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 22:41:30,254 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 22:41:30,254 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 22:41:30,254 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 22:41:30,255 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_bf2e9086-7250-4272-be0c-0352f88f4c8e/bin/utaipan-vmNK8stdcF/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf2e9086-7250-4272-be0c-0352f88f4c8e/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 92ab77284c41e8949aa8a67882902909eedb25047f32a3303bcd08767adce507 [2021-11-12 22:41:30,485 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 22:41:30,517 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 22:41:30,520 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 22:41:30,521 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 22:41:30,522 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 22:41:30,523 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf2e9086-7250-4272-be0c-0352f88f4c8e/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2021-11-12 22:41:30,614 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf2e9086-7250-4272-be0c-0352f88f4c8e/bin/utaipan-vmNK8stdcF/data/da129a87e/563a89c17b97402ba08287d87aaa6b2a/FLAGc6ab0cbb0 [2021-11-12 22:41:31,482 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 22:41:31,483 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf2e9086-7250-4272-be0c-0352f88f4c8e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2021-11-12 22:41:31,538 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf2e9086-7250-4272-be0c-0352f88f4c8e/bin/utaipan-vmNK8stdcF/data/da129a87e/563a89c17b97402ba08287d87aaa6b2a/FLAGc6ab0cbb0 [2021-11-12 22:41:31,959 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf2e9086-7250-4272-be0c-0352f88f4c8e/bin/utaipan-vmNK8stdcF/data/da129a87e/563a89c17b97402ba08287d87aaa6b2a [2021-11-12 22:41:31,961 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 22:41:31,963 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 22:41:31,964 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 22:41:31,964 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 22:41:31,968 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 22:41:31,969 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:41:31" (1/1) ... [2021-11-12 22:41:31,970 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@678128e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:41:31, skipping insertion in model container [2021-11-12 22:41:31,970 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:41:31" (1/1) ... [2021-11-12 22:41:31,977 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 22:41:32,242 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:41:32,933 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf2e9086-7250-4272-be0c-0352f88f4c8e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[26799,26812] [2021-11-12 22:41:32,989 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf2e9086-7250-4272-be0c-0352f88f4c8e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[33129,33142] [2021-11-12 22:41:33,113 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf2e9086-7250-4272-be0c-0352f88f4c8e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[57661,57674] [2021-11-12 22:41:33,140 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf2e9086-7250-4272-be0c-0352f88f4c8e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[65696,65709] [2021-11-12 22:41:33,159 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf2e9086-7250-4272-be0c-0352f88f4c8e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[71499,71512] [2021-11-12 22:41:33,191 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf2e9086-7250-4272-be0c-0352f88f4c8e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[82182,82195] [2021-11-12 22:41:33,215 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf2e9086-7250-4272-be0c-0352f88f4c8e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[90107,90120] [2021-11-12 22:41:33,235 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf2e9086-7250-4272-be0c-0352f88f4c8e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[97295,97308] [2021-11-12 22:41:33,419 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf2e9086-7250-4272-be0c-0352f88f4c8e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[131822,131835] [2021-11-12 22:41:33,429 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf2e9086-7250-4272-be0c-0352f88f4c8e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[134930,134943] [2021-11-12 22:41:33,470 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf2e9086-7250-4272-be0c-0352f88f4c8e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[142923,142936] [2021-11-12 22:41:33,501 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf2e9086-7250-4272-be0c-0352f88f4c8e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[148707,148720] [2021-11-12 22:41:33,597 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf2e9086-7250-4272-be0c-0352f88f4c8e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[171333,171346] [2021-11-12 22:41:33,668 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf2e9086-7250-4272-be0c-0352f88f4c8e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[199069,199082] [2021-11-12 22:41:33,735 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf2e9086-7250-4272-be0c-0352f88f4c8e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[225502,225515] [2021-11-12 22:41:33,801 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf2e9086-7250-4272-be0c-0352f88f4c8e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[252663,252676] [2021-11-12 22:41:33,880 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf2e9086-7250-4272-be0c-0352f88f4c8e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[283670,283683] [2021-11-12 22:41:34,166 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:41:34,184 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 22:41:34,341 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf2e9086-7250-4272-be0c-0352f88f4c8e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[26799,26812] [2021-11-12 22:41:34,359 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf2e9086-7250-4272-be0c-0352f88f4c8e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[33129,33142] [2021-11-12 22:41:34,417 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf2e9086-7250-4272-be0c-0352f88f4c8e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[57661,57674] [2021-11-12 22:41:34,438 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf2e9086-7250-4272-be0c-0352f88f4c8e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[65696,65709] [2021-11-12 22:41:34,453 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf2e9086-7250-4272-be0c-0352f88f4c8e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[71499,71512] [2021-11-12 22:41:34,479 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf2e9086-7250-4272-be0c-0352f88f4c8e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[82182,82195] [2021-11-12 22:41:34,499 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf2e9086-7250-4272-be0c-0352f88f4c8e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[90107,90120] [2021-11-12 22:41:34,516 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf2e9086-7250-4272-be0c-0352f88f4c8e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[97295,97308] [2021-11-12 22:41:34,587 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf2e9086-7250-4272-be0c-0352f88f4c8e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[131822,131835] [2021-11-12 22:41:34,595 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf2e9086-7250-4272-be0c-0352f88f4c8e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[134930,134943] [2021-11-12 22:41:34,613 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf2e9086-7250-4272-be0c-0352f88f4c8e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[142923,142936] [2021-11-12 22:41:34,627 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf2e9086-7250-4272-be0c-0352f88f4c8e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[148707,148720] [2021-11-12 22:41:34,677 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf2e9086-7250-4272-be0c-0352f88f4c8e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[171333,171346] [2021-11-12 22:41:34,756 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf2e9086-7250-4272-be0c-0352f88f4c8e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[199069,199082] [2021-11-12 22:41:34,809 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf2e9086-7250-4272-be0c-0352f88f4c8e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[225502,225515] [2021-11-12 22:41:34,864 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf2e9086-7250-4272-be0c-0352f88f4c8e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[252663,252676] [2021-11-12 22:41:34,924 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf2e9086-7250-4272-be0c-0352f88f4c8e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[283670,283683] [2021-11-12 22:41:35,131 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:41:35,173 INFO L208 MainTranslator]: Completed translation [2021-11-12 22:41:35,174 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:41:35 WrapperNode [2021-11-12 22:41:35,174 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 22:41:35,175 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 22:41:35,175 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 22:41:35,175 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 22:41:35,212 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:41:35" (1/1) ... [2021-11-12 22:41:35,319 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:41:35" (1/1) ... [2021-11-12 22:41:35,550 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 22:41:35,551 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 22:41:35,552 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 22:41:35,552 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 22:41:35,560 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:41:35" (1/1) ... [2021-11-12 22:41:35,561 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:41:35" (1/1) ... [2021-11-12 22:41:35,670 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:41:35" (1/1) ... [2021-11-12 22:41:35,673 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:41:35" (1/1) ... [2021-11-12 22:41:35,789 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:41:35" (1/1) ... [2021-11-12 22:41:35,911 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:41:35" (1/1) ... [2021-11-12 22:41:35,985 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:41:35" (1/1) ... [2021-11-12 22:41:36,079 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 22:41:36,083 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 22:41:36,084 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 22:41:36,084 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 22:41:36,087 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:41:35" (1/1) ... [2021-11-12 22:41:36,111 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:41:36,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf2e9086-7250-4272-be0c-0352f88f4c8e/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:41:36,172 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf2e9086-7250-4272-be0c-0352f88f4c8e/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 22:41:36,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf2e9086-7250-4272-be0c-0352f88f4c8e/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 22:41:36,309 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-12 22:41:36,309 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 22:41:36,310 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 22:41:36,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 22:41:45,038 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 22:41:45,038 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-12 22:41:45,045 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:41:45 BoogieIcfgContainer [2021-11-12 22:41:45,045 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 22:41:45,047 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 22:41:45,047 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 22:41:45,051 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 22:41:45,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 10:41:31" (1/3) ... [2021-11-12 22:41:45,052 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73afe158 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:41:45, skipping insertion in model container [2021-11-12 22:41:45,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:41:35" (2/3) ... [2021-11-12 22:41:45,052 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73afe158 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:41:45, skipping insertion in model container [2021-11-12 22:41:45,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:41:45" (3/3) ... [2021-11-12 22:41:45,054 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2021-11-12 22:41:45,060 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 22:41:45,061 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 17 error locations. [2021-11-12 22:41:45,138 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 22:41:45,148 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-12 22:41:45,148 INFO L340 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2021-11-12 22:41:45,224 INFO L276 IsEmpty]: Start isEmpty. Operand has 3362 states, 3344 states have (on average 1.8310406698564594) internal successors, (6123), 3361 states have internal predecessors, (6123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:41:45,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-12 22:41:45,265 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:41:45,265 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:41:45,268 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-12 22:41:45,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:41:45,274 INFO L85 PathProgramCache]: Analyzing trace with hash 600254357, now seen corresponding path program 1 times [2021-11-12 22:41:45,283 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:41:45,283 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149072251] [2021-11-12 22:41:45,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:41:45,285 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:41:45,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:41:45,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:41:45,795 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:41:45,795 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149072251] [2021-11-12 22:41:45,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149072251] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:41:45,796 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:41:45,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-12 22:41:45,798 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342273710] [2021-11-12 22:41:45,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:41:45,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 22:41:45,803 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:41:45,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 22:41:45,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-12 22:41:45,839 INFO L87 Difference]: Start difference. First operand has 3362 states, 3344 states have (on average 1.8310406698564594) internal successors, (6123), 3361 states have internal predecessors, (6123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:41:49,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:41:49,407 INFO L93 Difference]: Finished difference Result 5637 states and 10090 transitions. [2021-11-12 22:41:49,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 22:41:49,410 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-12 22:41:49,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:41:49,448 INFO L225 Difference]: With dead ends: 5637 [2021-11-12 22:41:49,448 INFO L226 Difference]: Without dead ends: 3311 [2021-11-12 22:41:49,460 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-12 22:41:49,467 INFO L933 BasicCegarLoop]: 2567 mSDtfsCounter, 16121 mSDsluCounter, 638 mSDsCounter, 0 mSdLazyCounter, 2759 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2494.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 16121 SdHoareTripleChecker+Valid, 3202 SdHoareTripleChecker+Invalid, 2855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 66.95ms SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 2759 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3098.00ms IncrementalHoareTripleChecker+Time [2021-11-12 22:41:49,473 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16121 Valid, 3202 Invalid, 2855 Unknown, 0 Unchecked, 66.95ms Time], IncrementalHoareTripleChecker [96 Valid, 2759 Invalid, 0 Unknown, 0 Unchecked, 3098.00ms Time] [2021-11-12 22:41:49,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3311 states. [2021-11-12 22:41:49,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3311 to 3291. [2021-11-12 22:41:49,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3291 states, 3274 states have (on average 1.3194868662186927) internal successors, (4320), 3290 states have internal predecessors, (4320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:41:49,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3291 states to 3291 states and 4320 transitions. [2021-11-12 22:41:49,687 INFO L78 Accepts]: Start accepts. Automaton has 3291 states and 4320 transitions. Word has length 63 [2021-11-12 22:41:49,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:41:49,687 INFO L470 AbstractCegarLoop]: Abstraction has 3291 states and 4320 transitions. [2021-11-12 22:41:49,688 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:41:49,688 INFO L276 IsEmpty]: Start isEmpty. Operand 3291 states and 4320 transitions. [2021-11-12 22:41:49,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-12 22:41:49,699 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:41:49,699 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:41:49,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-12 22:41:49,700 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-12 22:41:49,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:41:49,703 INFO L85 PathProgramCache]: Analyzing trace with hash -1509750167, now seen corresponding path program 1 times [2021-11-12 22:41:49,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:41:49,703 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479520132] [2021-11-12 22:41:49,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:41:49,704 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:41:49,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:41:49,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:41:49,925 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:41:49,925 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479520132] [2021-11-12 22:41:49,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479520132] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:41:49,925 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:41:49,926 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-12 22:41:49,926 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740462364] [2021-11-12 22:41:49,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:41:49,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 22:41:49,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:41:49,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 22:41:49,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-12 22:41:49,929 INFO L87 Difference]: Start difference. First operand 3291 states and 4320 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:41:52,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:41:52,972 INFO L93 Difference]: Finished difference Result 6332 states and 8314 transitions. [2021-11-12 22:41:52,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 22:41:52,972 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-12 22:41:52,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:41:53,002 INFO L225 Difference]: With dead ends: 6332 [2021-11-12 22:41:53,002 INFO L226 Difference]: Without dead ends: 4332 [2021-11-12 22:41:53,006 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-12 22:41:53,008 INFO L933 BasicCegarLoop]: 1249 mSDtfsCounter, 11111 mSDsluCounter, 622 mSDsCounter, 0 mSdLazyCounter, 2444 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2182.25ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11111 SdHoareTripleChecker+Valid, 1871 SdHoareTripleChecker+Invalid, 2607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 32.92ms SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 2444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2711.64ms IncrementalHoareTripleChecker+Time [2021-11-12 22:41:53,013 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11111 Valid, 1871 Invalid, 2607 Unknown, 0 Unchecked, 32.92ms Time], IncrementalHoareTripleChecker [163 Valid, 2444 Invalid, 0 Unknown, 0 Unchecked, 2711.64ms Time] [2021-11-12 22:41:53,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4332 states. [2021-11-12 22:41:53,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4332 to 4308. [2021-11-12 22:41:53,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4308 states, 4291 states have (on average 1.3146119785597763) internal successors, (5641), 4307 states have internal predecessors, (5641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:41:53,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4308 states to 4308 states and 5641 transitions. [2021-11-12 22:41:53,198 INFO L78 Accepts]: Start accepts. Automaton has 4308 states and 5641 transitions. Word has length 63 [2021-11-12 22:41:53,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:41:53,199 INFO L470 AbstractCegarLoop]: Abstraction has 4308 states and 5641 transitions. [2021-11-12 22:41:53,199 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:41:53,199 INFO L276 IsEmpty]: Start isEmpty. Operand 4308 states and 5641 transitions. [2021-11-12 22:41:53,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-12 22:41:53,208 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:41:53,208 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:41:53,208 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-12 22:41:53,209 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-12 22:41:53,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:41:53,209 INFO L85 PathProgramCache]: Analyzing trace with hash 2141976619, now seen corresponding path program 1 times [2021-11-12 22:41:53,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:41:53,210 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220326759] [2021-11-12 22:41:53,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:41:53,210 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:41:53,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:41:53,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:41:53,330 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:41:53,330 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220326759] [2021-11-12 22:41:53,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220326759] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:41:53,330 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:41:53,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-12 22:41:53,331 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523269476] [2021-11-12 22:41:53,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:41:53,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 22:41:53,332 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:41:53,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 22:41:53,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-12 22:41:53,333 INFO L87 Difference]: Start difference. First operand 4308 states and 5641 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:41:55,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:41:55,594 INFO L93 Difference]: Finished difference Result 8650 states and 11301 transitions. [2021-11-12 22:41:55,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 22:41:55,594 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-12 22:41:55,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:41:55,626 INFO L225 Difference]: With dead ends: 8650 [2021-11-12 22:41:55,626 INFO L226 Difference]: Without dead ends: 5867 [2021-11-12 22:41:55,633 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-12 22:41:55,637 INFO L933 BasicCegarLoop]: 1243 mSDtfsCounter, 9638 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 1892 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1590.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9638 SdHoareTripleChecker+Valid, 1727 SdHoareTripleChecker+Invalid, 1990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.53ms SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 1892 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1966.89ms IncrementalHoareTripleChecker+Time [2021-11-12 22:41:55,642 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9638 Valid, 1727 Invalid, 1990 Unknown, 0 Unchecked, 20.53ms Time], IncrementalHoareTripleChecker [98 Valid, 1892 Invalid, 0 Unknown, 0 Unchecked, 1966.89ms Time] [2021-11-12 22:41:55,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5867 states. [2021-11-12 22:41:55,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5867 to 5840. [2021-11-12 22:41:56,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5840 states, 5823 states have (on average 1.3123819337111455) internal successors, (7642), 5839 states have internal predecessors, (7642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:41:56,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5840 states to 5840 states and 7642 transitions. [2021-11-12 22:41:56,025 INFO L78 Accepts]: Start accepts. Automaton has 5840 states and 7642 transitions. Word has length 64 [2021-11-12 22:41:56,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:41:56,027 INFO L470 AbstractCegarLoop]: Abstraction has 5840 states and 7642 transitions. [2021-11-12 22:41:56,027 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:41:56,027 INFO L276 IsEmpty]: Start isEmpty. Operand 5840 states and 7642 transitions. [2021-11-12 22:41:56,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-12 22:41:56,040 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:41:56,040 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:41:56,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-12 22:41:56,041 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-12 22:41:56,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:41:56,042 INFO L85 PathProgramCache]: Analyzing trace with hash 767039615, now seen corresponding path program 1 times [2021-11-12 22:41:56,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:41:56,045 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934424597] [2021-11-12 22:41:56,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:41:56,046 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:41:56,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:41:56,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:41:56,148 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:41:56,148 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934424597] [2021-11-12 22:41:56,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934424597] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:41:56,148 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:41:56,149 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-12 22:41:56,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474260628] [2021-11-12 22:41:56,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:41:56,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 22:41:56,150 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:41:56,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 22:41:56,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-12 22:41:56,151 INFO L87 Difference]: Start difference. First operand 5840 states and 7642 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:41:58,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:41:58,143 INFO L93 Difference]: Finished difference Result 11150 states and 14652 transitions. [2021-11-12 22:41:58,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 22:41:58,144 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-12 22:41:58,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:41:58,192 INFO L225 Difference]: With dead ends: 11150 [2021-11-12 22:41:58,192 INFO L226 Difference]: Without dead ends: 7338 [2021-11-12 22:41:58,200 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-12 22:41:58,203 INFO L933 BasicCegarLoop]: 1127 mSDtfsCounter, 8101 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 1565 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1315.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8101 SdHoareTripleChecker+Valid, 1483 SdHoareTripleChecker+Invalid, 1607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.08ms SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1565 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1619.70ms IncrementalHoareTripleChecker+Time [2021-11-12 22:41:58,204 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8101 Valid, 1483 Invalid, 1607 Unknown, 0 Unchecked, 17.08ms Time], IncrementalHoareTripleChecker [42 Valid, 1565 Invalid, 0 Unknown, 0 Unchecked, 1619.70ms Time] [2021-11-12 22:41:58,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7338 states. [2021-11-12 22:41:58,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7338 to 7303. [2021-11-12 22:41:58,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7303 states, 7286 states have (on average 1.3192423826516608) internal successors, (9612), 7302 states have internal predecessors, (9612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:41:58,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7303 states to 7303 states and 9612 transitions. [2021-11-12 22:41:58,628 INFO L78 Accepts]: Start accepts. Automaton has 7303 states and 9612 transitions. Word has length 65 [2021-11-12 22:41:58,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:41:58,629 INFO L470 AbstractCegarLoop]: Abstraction has 7303 states and 9612 transitions. [2021-11-12 22:41:58,630 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:41:58,630 INFO L276 IsEmpty]: Start isEmpty. Operand 7303 states and 9612 transitions. [2021-11-12 22:41:58,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-12 22:41:58,640 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:41:58,640 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:41:58,640 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-12 22:41:58,640 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-12 22:41:58,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:41:58,641 INFO L85 PathProgramCache]: Analyzing trace with hash 1941175905, now seen corresponding path program 1 times [2021-11-12 22:41:58,641 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:41:58,642 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019684015] [2021-11-12 22:41:58,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:41:58,645 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:41:58,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:41:58,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:41:58,860 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:41:58,861 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019684015] [2021-11-12 22:41:58,861 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019684015] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:41:58,861 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:41:58,861 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-12 22:41:58,868 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102851480] [2021-11-12 22:41:58,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:41:58,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 22:41:58,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:41:58,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 22:41:58,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-12 22:41:58,872 INFO L87 Difference]: Start difference. First operand 7303 states and 9612 transitions. Second operand has 8 states, 8 states have (on average 8.125) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:42:03,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:42:03,322 INFO L93 Difference]: Finished difference Result 12557 states and 16727 transitions. [2021-11-12 22:42:03,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-12 22:42:03,322 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-12 22:42:03,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:42:03,381 INFO L225 Difference]: With dead ends: 12557 [2021-11-12 22:42:03,381 INFO L226 Difference]: Without dead ends: 11630 [2021-11-12 22:42:03,387 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-12 22:42:03,388 INFO L933 BasicCegarLoop]: 1225 mSDtfsCounter, 9863 mSDsluCounter, 3903 mSDsCounter, 0 mSdLazyCounter, 6430 mSolverCounterSat, 350 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3098.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9863 SdHoareTripleChecker+Valid, 5128 SdHoareTripleChecker+Invalid, 6780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 44.91ms SdHoareTripleChecker+Time, 350 IncrementalHoareTripleChecker+Valid, 6430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3814.52ms IncrementalHoareTripleChecker+Time [2021-11-12 22:42:03,389 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9863 Valid, 5128 Invalid, 6780 Unknown, 0 Unchecked, 44.91ms Time], IncrementalHoareTripleChecker [350 Valid, 6430 Invalid, 0 Unknown, 0 Unchecked, 3814.52ms Time] [2021-11-12 22:42:03,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11630 states. [2021-11-12 22:42:03,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11630 to 7262. [2021-11-12 22:42:03,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7262 states, 7245 states have (on average 1.3189786059351276) internal successors, (9556), 7261 states have internal predecessors, (9556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:42:03,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7262 states to 7262 states and 9556 transitions. [2021-11-12 22:42:03,946 INFO L78 Accepts]: Start accepts. Automaton has 7262 states and 9556 transitions. Word has length 65 [2021-11-12 22:42:03,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:42:03,947 INFO L470 AbstractCegarLoop]: Abstraction has 7262 states and 9556 transitions. [2021-11-12 22:42:03,947 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:42:03,947 INFO L276 IsEmpty]: Start isEmpty. Operand 7262 states and 9556 transitions. [2021-11-12 22:42:03,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-12 22:42:03,956 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:42:03,956 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:42:03,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-12 22:42:03,957 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-12 22:42:03,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:42:03,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1194049603, now seen corresponding path program 1 times [2021-11-12 22:42:03,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:42:03,958 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203485840] [2021-11-12 22:42:03,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:42:03,958 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:42:04,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:42:04,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:42:04,123 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:42:04,123 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203485840] [2021-11-12 22:42:04,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203485840] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:42:04,124 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:42:04,124 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-12 22:42:04,124 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174763335] [2021-11-12 22:42:04,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:42:04,127 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-12 22:42:04,127 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:42:04,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-12 22:42:04,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-12 22:42:04,128 INFO L87 Difference]: Start difference. First operand 7262 states and 9556 transitions. Second operand has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:42:06,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:42:06,892 INFO L93 Difference]: Finished difference Result 10823 states and 14510 transitions. [2021-11-12 22:42:06,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-12 22:42:06,892 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-12 22:42:06,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:42:06,986 INFO L225 Difference]: With dead ends: 10823 [2021-11-12 22:42:06,986 INFO L226 Difference]: Without dead ends: 9806 [2021-11-12 22:42:06,992 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-11-12 22:42:06,993 INFO L933 BasicCegarLoop]: 1153 mSDtfsCounter, 8688 mSDsluCounter, 2692 mSDsCounter, 0 mSdLazyCounter, 4224 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1832.45ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8688 SdHoareTripleChecker+Valid, 3845 SdHoareTripleChecker+Invalid, 4322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 25.99ms SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 4224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2276.76ms IncrementalHoareTripleChecker+Time [2021-11-12 22:42:06,994 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8688 Valid, 3845 Invalid, 4322 Unknown, 0 Unchecked, 25.99ms Time], IncrementalHoareTripleChecker [98 Valid, 4224 Invalid, 0 Unknown, 0 Unchecked, 2276.76ms Time] [2021-11-12 22:42:07,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9806 states. [2021-11-12 22:42:07,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9806 to 7135. [2021-11-12 22:42:07,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7135 states, 7118 states have (on average 1.3189098061253162) internal successors, (9388), 7134 states have internal predecessors, (9388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:42:07,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7135 states to 7135 states and 9388 transitions. [2021-11-12 22:42:07,421 INFO L78 Accepts]: Start accepts. Automaton has 7135 states and 9388 transitions. Word has length 65 [2021-11-12 22:42:07,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:42:07,422 INFO L470 AbstractCegarLoop]: Abstraction has 7135 states and 9388 transitions. [2021-11-12 22:42:07,422 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:42:07,422 INFO L276 IsEmpty]: Start isEmpty. Operand 7135 states and 9388 transitions. [2021-11-12 22:42:07,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-12 22:42:07,431 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:42:07,431 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:42:07,431 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-12 22:42:07,431 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-12 22:42:07,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:42:07,432 INFO L85 PathProgramCache]: Analyzing trace with hash -780640952, now seen corresponding path program 1 times [2021-11-12 22:42:07,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:42:07,432 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085969818] [2021-11-12 22:42:07,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:42:07,432 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:42:07,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:42:07,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:42:07,572 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:42:07,572 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085969818] [2021-11-12 22:42:07,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085969818] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:42:07,573 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:42:07,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-12 22:42:07,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513763947] [2021-11-12 22:42:07,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:42:07,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 22:42:07,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:42:07,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 22:42:07,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-12 22:42:07,574 INFO L87 Difference]: Start difference. First operand 7135 states and 9388 transitions. Second operand has 8 states, 8 states have (on average 8.25) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:42:10,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:42:10,911 INFO L93 Difference]: Finished difference Result 9809 states and 12929 transitions. [2021-11-12 22:42:10,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-12 22:42:10,912 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-11-12 22:42:10,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:42:10,934 INFO L225 Difference]: With dead ends: 9809 [2021-11-12 22:42:10,935 INFO L226 Difference]: Without dead ends: 9801 [2021-11-12 22:42:10,938 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-11-12 22:42:10,939 INFO L933 BasicCegarLoop]: 1203 mSDtfsCounter, 8685 mSDsluCounter, 3719 mSDsCounter, 0 mSdLazyCounter, 5605 mSolverCounterSat, 283 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2141.26ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8685 SdHoareTripleChecker+Valid, 4922 SdHoareTripleChecker+Invalid, 5888 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 23.08ms SdHoareTripleChecker+Time, 283 IncrementalHoareTripleChecker+Valid, 5605 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2652.98ms IncrementalHoareTripleChecker+Time [2021-11-12 22:42:10,939 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8685 Valid, 4922 Invalid, 5888 Unknown, 0 Unchecked, 23.08ms Time], IncrementalHoareTripleChecker [283 Valid, 5605 Invalid, 0 Unknown, 0 Unchecked, 2652.98ms Time] [2021-11-12 22:42:10,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9801 states. [2021-11-12 22:42:11,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9801 to 7135. [2021-11-12 22:42:11,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7135 states, 7118 states have (on average 1.3187693172239394) internal successors, (9387), 7134 states have internal predecessors, (9387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:42:11,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7135 states to 7135 states and 9387 transitions. [2021-11-12 22:42:11,492 INFO L78 Accepts]: Start accepts. Automaton has 7135 states and 9387 transitions. Word has length 66 [2021-11-12 22:42:11,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:42:11,494 INFO L470 AbstractCegarLoop]: Abstraction has 7135 states and 9387 transitions. [2021-11-12 22:42:11,494 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:42:11,494 INFO L276 IsEmpty]: Start isEmpty. Operand 7135 states and 9387 transitions. [2021-11-12 22:42:11,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-12 22:42:11,505 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:42:11,506 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:42:11,506 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-12 22:42:11,506 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-12 22:42:11,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:42:11,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1912274000, now seen corresponding path program 1 times [2021-11-12 22:42:11,507 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:42:11,507 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670537697] [2021-11-12 22:42:11,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:42:11,507 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:42:11,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:42:11,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:42:11,642 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:42:11,642 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670537697] [2021-11-12 22:42:11,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670537697] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:42:11,643 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:42:11,643 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-12 22:42:11,643 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213515701] [2021-11-12 22:42:11,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:42:11,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 22:42:11,644 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:42:11,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 22:42:11,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-12 22:42:11,644 INFO L87 Difference]: Start difference. First operand 7135 states and 9387 transitions. Second operand has 8 states, 8 states have (on average 8.25) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:42:14,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:42:14,799 INFO L93 Difference]: Finished difference Result 8303 states and 10922 transitions. [2021-11-12 22:42:14,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-12 22:42:14,800 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-11-12 22:42:14,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:42:14,815 INFO L225 Difference]: With dead ends: 8303 [2021-11-12 22:42:14,815 INFO L226 Difference]: Without dead ends: 8298 [2021-11-12 22:42:14,817 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2021-11-12 22:42:14,818 INFO L933 BasicCegarLoop]: 1154 mSDtfsCounter, 7016 mSDsluCounter, 3590 mSDsCounter, 0 mSdLazyCounter, 4978 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1991.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7016 SdHoareTripleChecker+Valid, 4744 SdHoareTripleChecker+Invalid, 5124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 22.98ms SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 4978 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2485.91ms IncrementalHoareTripleChecker+Time [2021-11-12 22:42:14,818 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7016 Valid, 4744 Invalid, 5124 Unknown, 0 Unchecked, 22.98ms Time], IncrementalHoareTripleChecker [146 Valid, 4978 Invalid, 0 Unknown, 0 Unchecked, 2485.91ms Time] [2021-11-12 22:42:14,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8298 states. [2021-11-12 22:42:15,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8298 to 7135. [2021-11-12 22:42:15,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7135 states, 7118 states have (on average 1.3186288283225625) internal successors, (9386), 7134 states have internal predecessors, (9386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:42:15,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7135 states to 7135 states and 9386 transitions. [2021-11-12 22:42:15,337 INFO L78 Accepts]: Start accepts. Automaton has 7135 states and 9386 transitions. Word has length 66 [2021-11-12 22:42:15,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:42:15,337 INFO L470 AbstractCegarLoop]: Abstraction has 7135 states and 9386 transitions. [2021-11-12 22:42:15,338 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:42:15,338 INFO L276 IsEmpty]: Start isEmpty. Operand 7135 states and 9386 transitions. [2021-11-12 22:42:15,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-12 22:42:15,346 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:42:15,346 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:42:15,346 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-12 22:42:15,346 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-12 22:42:15,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:42:15,347 INFO L85 PathProgramCache]: Analyzing trace with hash -143652767, now seen corresponding path program 1 times [2021-11-12 22:42:15,347 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:42:15,347 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046054972] [2021-11-12 22:42:15,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:42:15,348 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:42:15,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:42:15,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:42:15,730 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:42:15,730 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046054972] [2021-11-12 22:42:15,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046054972] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:42:15,730 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:42:15,731 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-12 22:42:15,731 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733355808] [2021-11-12 22:42:15,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:42:15,731 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-12 22:42:15,731 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:42:15,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-12 22:42:15,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-12 22:42:15,732 INFO L87 Difference]: Start difference. First operand 7135 states and 9386 transitions. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:42:18,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:42:18,389 INFO L93 Difference]: Finished difference Result 13443 states and 18278 transitions. [2021-11-12 22:42:18,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 22:42:18,392 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-11-12 22:42:18,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:42:18,411 INFO L225 Difference]: With dead ends: 13443 [2021-11-12 22:42:18,411 INFO L226 Difference]: Without dead ends: 12513 [2021-11-12 22:42:18,417 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=136, Invalid=284, Unknown=0, NotChecked=0, Total=420 [2021-11-12 22:42:18,418 INFO L933 BasicCegarLoop]: 2191 mSDtfsCounter, 11908 mSDsluCounter, 5282 mSDsCounter, 0 mSdLazyCounter, 1353 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 961.23ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11908 SdHoareTripleChecker+Valid, 7423 SdHoareTripleChecker+Invalid, 1480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 31.29ms SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 1353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1182.84ms IncrementalHoareTripleChecker+Time [2021-11-12 22:42:18,418 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11908 Valid, 7423 Invalid, 1480 Unknown, 0 Unchecked, 31.29ms Time], IncrementalHoareTripleChecker [127 Valid, 1353 Invalid, 0 Unknown, 0 Unchecked, 1182.84ms Time] [2021-11-12 22:42:18,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12513 states. [2021-11-12 22:42:18,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12513 to 7087. [2021-11-12 22:42:18,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7087 states, 7071 states have (on average 1.3186253712346203) internal successors, (9324), 7086 states have internal predecessors, (9324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:42:19,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7087 states to 7087 states and 9324 transitions. [2021-11-12 22:42:19,003 INFO L78 Accepts]: Start accepts. Automaton has 7087 states and 9324 transitions. Word has length 66 [2021-11-12 22:42:19,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:42:19,003 INFO L470 AbstractCegarLoop]: Abstraction has 7087 states and 9324 transitions. [2021-11-12 22:42:19,004 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:42:19,004 INFO L276 IsEmpty]: Start isEmpty. Operand 7087 states and 9324 transitions. [2021-11-12 22:42:19,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-12 22:42:19,012 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:42:19,012 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:42:19,012 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-12 22:42:19,012 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-12 22:42:19,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:42:19,013 INFO L85 PathProgramCache]: Analyzing trace with hash -1525924249, now seen corresponding path program 1 times [2021-11-12 22:42:19,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:42:19,013 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173519744] [2021-11-12 22:42:19,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:42:19,014 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:42:19,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:42:19,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:42:19,341 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:42:19,341 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173519744] [2021-11-12 22:42:19,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173519744] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:42:19,342 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:42:19,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-12 22:42:19,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758792307] [2021-11-12 22:42:19,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:42:19,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-12 22:42:19,347 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:42:19,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-12 22:42:19,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-11-12 22:42:19,348 INFO L87 Difference]: Start difference. First operand 7087 states and 9324 transitions. Second operand has 12 states, 12 states have (on average 5.5) internal successors, (66), 11 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:42:22,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:42:22,144 INFO L93 Difference]: Finished difference Result 11298 states and 15279 transitions. [2021-11-12 22:42:22,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-12 22:42:22,145 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.5) internal successors, (66), 11 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-11-12 22:42:22,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:42:22,154 INFO L225 Difference]: With dead ends: 11298 [2021-11-12 22:42:22,155 INFO L226 Difference]: Without dead ends: 11294 [2021-11-12 22:42:22,157 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=153, Invalid=447, Unknown=0, NotChecked=0, Total=600 [2021-11-12 22:42:22,157 INFO L933 BasicCegarLoop]: 2315 mSDtfsCounter, 13145 mSDsluCounter, 10211 mSDsCounter, 0 mSdLazyCounter, 1784 mSolverCounterSat, 276 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 968.07ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13145 SdHoareTripleChecker+Valid, 12383 SdHoareTripleChecker+Invalid, 2060 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 23.62ms SdHoareTripleChecker+Time, 276 IncrementalHoareTripleChecker+Valid, 1784 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1158.93ms IncrementalHoareTripleChecker+Time [2021-11-12 22:42:22,158 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13145 Valid, 12383 Invalid, 2060 Unknown, 0 Unchecked, 23.62ms Time], IncrementalHoareTripleChecker [276 Valid, 1784 Invalid, 0 Unknown, 0 Unchecked, 1158.93ms Time] [2021-11-12 22:42:22,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11294 states. [2021-11-12 22:42:22,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11294 to 7083. [2021-11-12 22:42:22,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7083 states, 7068 states have (on average 1.3186191284663271) internal successors, (9320), 7082 states have internal predecessors, (9320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:42:22,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7083 states to 7083 states and 9320 transitions. [2021-11-12 22:42:22,737 INFO L78 Accepts]: Start accepts. Automaton has 7083 states and 9320 transitions. Word has length 66 [2021-11-12 22:42:22,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:42:22,737 INFO L470 AbstractCegarLoop]: Abstraction has 7083 states and 9320 transitions. [2021-11-12 22:42:22,738 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.5) internal successors, (66), 11 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:42:22,738 INFO L276 IsEmpty]: Start isEmpty. Operand 7083 states and 9320 transitions. [2021-11-12 22:42:22,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-12 22:42:22,746 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:42:22,746 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:42:22,746 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-12 22:42:22,747 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-12 22:42:22,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:42:22,747 INFO L85 PathProgramCache]: Analyzing trace with hash 2095330879, now seen corresponding path program 1 times [2021-11-12 22:42:22,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:42:22,747 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612438183] [2021-11-12 22:42:22,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:42:22,748 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:42:22,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:42:22,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:42:22,994 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:42:22,995 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612438183] [2021-11-12 22:42:22,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612438183] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:42:22,995 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:42:22,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-12 22:42:22,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625959729] [2021-11-12 22:42:22,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:42:22,995 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-12 22:42:22,996 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:42:22,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-12 22:42:22,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-11-12 22:42:22,996 INFO L87 Difference]: Start difference. First operand 7083 states and 9320 transitions. Second operand has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 10 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:42:26,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:42:26,026 INFO L93 Difference]: Finished difference Result 13960 states and 19007 transitions. [2021-11-12 22:42:26,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-12 22:42:26,027 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 10 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-12 22:42:26,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:42:26,039 INFO L225 Difference]: With dead ends: 13960 [2021-11-12 22:42:26,039 INFO L226 Difference]: Without dead ends: 12977 [2021-11-12 22:42:26,042 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=192, Invalid=408, Unknown=0, NotChecked=0, Total=600 [2021-11-12 22:42:26,042 INFO L933 BasicCegarLoop]: 2191 mSDtfsCounter, 14069 mSDsluCounter, 6394 mSDsCounter, 0 mSdLazyCounter, 1544 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 868.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 14069 SdHoareTripleChecker+Valid, 8509 SdHoareTripleChecker+Invalid, 1684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.76ms SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 1544 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1043.68ms IncrementalHoareTripleChecker+Time [2021-11-12 22:42:26,043 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14069 Valid, 8509 Invalid, 1684 Unknown, 0 Unchecked, 19.76ms Time], IncrementalHoareTripleChecker [140 Valid, 1544 Invalid, 0 Unknown, 0 Unchecked, 1043.68ms Time] [2021-11-12 22:42:26,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12977 states. [2021-11-12 22:42:26,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12977 to 7051. [2021-11-12 22:42:26,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7051 states, 7036 states have (on average 1.3190733371233656) internal successors, (9281), 7050 states have internal predecessors, (9281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:42:26,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7051 states to 7051 states and 9281 transitions. [2021-11-12 22:42:26,691 INFO L78 Accepts]: Start accepts. Automaton has 7051 states and 9281 transitions. Word has length 67 [2021-11-12 22:42:26,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:42:26,691 INFO L470 AbstractCegarLoop]: Abstraction has 7051 states and 9281 transitions. [2021-11-12 22:42:26,691 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 10 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:42:26,692 INFO L276 IsEmpty]: Start isEmpty. Operand 7051 states and 9281 transitions. [2021-11-12 22:42:26,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-12 22:42:26,700 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:42:26,700 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:42:26,700 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-12 22:42:26,700 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-12 22:42:26,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:42:26,701 INFO L85 PathProgramCache]: Analyzing trace with hash 920345528, now seen corresponding path program 1 times [2021-11-12 22:42:26,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:42:26,701 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528202815] [2021-11-12 22:42:26,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:42:26,702 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:42:26,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:42:26,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:42:26,807 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:42:26,807 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528202815] [2021-11-12 22:42:26,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528202815] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:42:26,808 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:42:26,808 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-12 22:42:26,808 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397585358] [2021-11-12 22:42:26,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:42:26,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-12 22:42:26,809 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:42:26,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-12 22:42:26,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-12 22:42:26,810 INFO L87 Difference]: Start difference. First operand 7051 states and 9281 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:42:30,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:42:30,034 INFO L93 Difference]: Finished difference Result 10861 states and 14568 transitions. [2021-11-12 22:42:30,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-12 22:42:30,035 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-12 22:42:30,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:42:30,045 INFO L225 Difference]: With dead ends: 10861 [2021-11-12 22:42:30,045 INFO L226 Difference]: Without dead ends: 9700 [2021-11-12 22:42:30,048 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2021-11-12 22:42:30,049 INFO L933 BasicCegarLoop]: 1093 mSDtfsCounter, 8689 mSDsluCounter, 2505 mSDsCounter, 0 mSdLazyCounter, 3980 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1703.99ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8689 SdHoareTripleChecker+Valid, 3598 SdHoareTripleChecker+Invalid, 4082 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.88ms SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 3980 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2095.57ms IncrementalHoareTripleChecker+Time [2021-11-12 22:42:30,049 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8689 Valid, 3598 Invalid, 4082 Unknown, 0 Unchecked, 16.88ms Time], IncrementalHoareTripleChecker [102 Valid, 3980 Invalid, 0 Unknown, 0 Unchecked, 2095.57ms Time] [2021-11-12 22:42:30,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9700 states. [2021-11-12 22:42:30,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9700 to 7051. [2021-11-12 22:42:30,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7051 states, 7036 states have (on average 1.3189312109152929) internal successors, (9280), 7050 states have internal predecessors, (9280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:42:30,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7051 states to 7051 states and 9280 transitions. [2021-11-12 22:42:30,840 INFO L78 Accepts]: Start accepts. Automaton has 7051 states and 9280 transitions. Word has length 67 [2021-11-12 22:42:30,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:42:30,840 INFO L470 AbstractCegarLoop]: Abstraction has 7051 states and 9280 transitions. [2021-11-12 22:42:30,841 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:42:30,841 INFO L276 IsEmpty]: Start isEmpty. Operand 7051 states and 9280 transitions. [2021-11-12 22:42:30,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-12 22:42:30,848 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:42:30,848 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:42:30,849 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-12 22:42:30,849 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-12 22:42:30,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:42:30,849 INFO L85 PathProgramCache]: Analyzing trace with hash -1407222430, now seen corresponding path program 1 times [2021-11-12 22:42:30,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:42:30,850 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300726454] [2021-11-12 22:42:30,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:42:30,850 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:42:30,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:42:30,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:42:30,980 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:42:30,980 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300726454] [2021-11-12 22:42:30,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300726454] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:42:30,980 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:42:30,981 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-12 22:42:30,981 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869391670] [2021-11-12 22:42:30,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:42:30,981 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 22:42:30,982 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:42:30,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 22:42:30,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-12 22:42:30,982 INFO L87 Difference]: Start difference. First operand 7051 states and 9280 transitions. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:42:35,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:42:35,565 INFO L93 Difference]: Finished difference Result 12000 states and 16091 transitions. [2021-11-12 22:42:35,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 22:42:35,566 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-12 22:42:35,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:42:35,578 INFO L225 Difference]: With dead ends: 12000 [2021-11-12 22:42:35,578 INFO L226 Difference]: Without dead ends: 11103 [2021-11-12 22:42:35,581 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2021-11-12 22:42:35,582 INFO L933 BasicCegarLoop]: 1256 mSDtfsCounter, 7113 mSDsluCounter, 4670 mSDsCounter, 0 mSdLazyCounter, 6697 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2494.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7113 SdHoareTripleChecker+Valid, 5926 SdHoareTripleChecker+Invalid, 6905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 22.46ms SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 6697 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3099.98ms IncrementalHoareTripleChecker+Time [2021-11-12 22:42:35,582 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7113 Valid, 5926 Invalid, 6905 Unknown, 0 Unchecked, 22.46ms Time], IncrementalHoareTripleChecker [208 Valid, 6697 Invalid, 0 Unknown, 0 Unchecked, 3099.98ms Time] [2021-11-12 22:42:35,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11103 states. [2021-11-12 22:42:36,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11103 to 7051. [2021-11-12 22:42:36,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7051 states, 7036 states have (on average 1.3187890847072201) internal successors, (9279), 7050 states have internal predecessors, (9279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:42:36,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7051 states to 7051 states and 9279 transitions. [2021-11-12 22:42:36,195 INFO L78 Accepts]: Start accepts. Automaton has 7051 states and 9279 transitions. Word has length 67 [2021-11-12 22:42:36,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:42:36,196 INFO L470 AbstractCegarLoop]: Abstraction has 7051 states and 9279 transitions. [2021-11-12 22:42:36,196 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:42:36,196 INFO L276 IsEmpty]: Start isEmpty. Operand 7051 states and 9279 transitions. [2021-11-12 22:42:36,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-12 22:42:36,204 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:42:36,204 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:42:36,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-12 22:42:36,205 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-12 22:42:36,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:42:36,205 INFO L85 PathProgramCache]: Analyzing trace with hash -805185725, now seen corresponding path program 1 times [2021-11-12 22:42:36,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:42:36,205 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570815246] [2021-11-12 22:42:36,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:42:36,206 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:42:36,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:42:36,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:42:36,317 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:42:36,317 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570815246] [2021-11-12 22:42:36,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570815246] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:42:36,317 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:42:36,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-12 22:42:36,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112286808] [2021-11-12 22:42:36,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:42:36,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 22:42:36,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:42:36,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 22:42:36,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-12 22:42:36,319 INFO L87 Difference]: Start difference. First operand 7051 states and 9279 transitions. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:42:41,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:42:41,168 INFO L93 Difference]: Finished difference Result 12342 states and 16450 transitions. [2021-11-12 22:42:41,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-12 22:42:41,168 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-12 22:42:41,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:42:41,178 INFO L225 Difference]: With dead ends: 12342 [2021-11-12 22:42:41,178 INFO L226 Difference]: Without dead ends: 11403 [2021-11-12 22:42:41,181 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-12 22:42:41,181 INFO L933 BasicCegarLoop]: 1246 mSDtfsCounter, 9230 mSDsluCounter, 3973 mSDsCounter, 0 mSdLazyCounter, 6360 mSolverCounterSat, 327 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2661.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9230 SdHoareTripleChecker+Valid, 5219 SdHoareTripleChecker+Invalid, 6687 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 24.28ms SdHoareTripleChecker+Time, 327 IncrementalHoareTripleChecker+Valid, 6360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3266.90ms IncrementalHoareTripleChecker+Time [2021-11-12 22:42:41,182 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9230 Valid, 5219 Invalid, 6687 Unknown, 0 Unchecked, 24.28ms Time], IncrementalHoareTripleChecker [327 Valid, 6360 Invalid, 0 Unknown, 0 Unchecked, 3266.90ms Time] [2021-11-12 22:42:41,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11403 states. [2021-11-12 22:42:41,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11403 to 7051. [2021-11-12 22:42:41,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7051 states, 7036 states have (on average 1.3186469584991471) internal successors, (9278), 7050 states have internal predecessors, (9278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:42:41,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7051 states to 7051 states and 9278 transitions. [2021-11-12 22:42:41,804 INFO L78 Accepts]: Start accepts. Automaton has 7051 states and 9278 transitions. Word has length 67 [2021-11-12 22:42:41,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:42:41,804 INFO L470 AbstractCegarLoop]: Abstraction has 7051 states and 9278 transitions. [2021-11-12 22:42:41,805 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:42:41,805 INFO L276 IsEmpty]: Start isEmpty. Operand 7051 states and 9278 transitions. [2021-11-12 22:42:41,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-12 22:42:41,810 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:42:41,810 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:42:41,810 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-12 22:42:41,811 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-12 22:42:41,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:42:41,811 INFO L85 PathProgramCache]: Analyzing trace with hash 164568382, now seen corresponding path program 1 times [2021-11-12 22:42:41,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:42:41,811 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370599839] [2021-11-12 22:42:41,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:42:41,812 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:42:41,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:42:42,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:42:42,088 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:42:42,088 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370599839] [2021-11-12 22:42:42,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370599839] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:42:42,089 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:42:42,089 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-12 22:42:42,089 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618679207] [2021-11-12 22:42:42,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:42:42,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-12 22:42:42,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:42:42,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-12 22:42:42,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-11-12 22:42:42,090 INFO L87 Difference]: Start difference. First operand 7051 states and 9278 transitions. Second operand has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 11 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:42:47,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:42:47,998 INFO L93 Difference]: Finished difference Result 17646 states and 24196 transitions. [2021-11-12 22:42:47,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-12 22:42:47,999 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 11 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-12 22:42:47,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:42:48,016 INFO L225 Difference]: With dead ends: 17646 [2021-11-12 22:42:48,016 INFO L226 Difference]: Without dead ends: 16600 [2021-11-12 22:42:48,021 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=264, Invalid=666, Unknown=0, NotChecked=0, Total=930 [2021-11-12 22:42:48,022 INFO L933 BasicCegarLoop]: 2789 mSDtfsCounter, 11553 mSDsluCounter, 13470 mSDsCounter, 0 mSdLazyCounter, 3799 mSolverCounterSat, 309 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1848.32ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11553 SdHoareTripleChecker+Valid, 16098 SdHoareTripleChecker+Invalid, 4108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 32.49ms SdHoareTripleChecker+Time, 309 IncrementalHoareTripleChecker+Valid, 3799 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2224.32ms IncrementalHoareTripleChecker+Time [2021-11-12 22:42:48,023 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11553 Valid, 16098 Invalid, 4108 Unknown, 0 Unchecked, 32.49ms Time], IncrementalHoareTripleChecker [309 Valid, 3799 Invalid, 0 Unknown, 0 Unchecked, 2224.32ms Time] [2021-11-12 22:42:48,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16600 states. [2021-11-12 22:42:48,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16600 to 6887. [2021-11-12 22:42:48,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6887 states, 6873 states have (on average 1.3171831805616179) internal successors, (9053), 6886 states have internal predecessors, (9053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:42:48,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6887 states to 6887 states and 9053 transitions. [2021-11-12 22:42:48,836 INFO L78 Accepts]: Start accepts. Automaton has 6887 states and 9053 transitions. Word has length 67 [2021-11-12 22:42:48,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:42:48,836 INFO L470 AbstractCegarLoop]: Abstraction has 6887 states and 9053 transitions. [2021-11-12 22:42:48,836 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 11 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:42:48,837 INFO L276 IsEmpty]: Start isEmpty. Operand 6887 states and 9053 transitions. [2021-11-12 22:42:48,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-12 22:42:48,843 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:42:48,844 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:42:48,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-12 22:42:48,844 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-12 22:42:48,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:42:48,845 INFO L85 PathProgramCache]: Analyzing trace with hash 2055073312, now seen corresponding path program 1 times [2021-11-12 22:42:48,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:42:48,845 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551961212] [2021-11-12 22:42:48,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:42:48,845 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:42:48,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:42:48,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:42:48,900 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:42:48,900 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551961212] [2021-11-12 22:42:48,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551961212] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:42:48,900 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:42:48,901 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-12 22:42:48,901 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062365470] [2021-11-12 22:42:48,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:42:48,901 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 22:42:48,902 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:42:48,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 22:42:48,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:42:48,902 INFO L87 Difference]: Start difference. First operand 6887 states and 9053 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:42:49,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:42:49,920 INFO L93 Difference]: Finished difference Result 9761 states and 12957 transitions. [2021-11-12 22:42:49,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 22:42:49,921 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-12 22:42:49,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:42:49,926 INFO L225 Difference]: With dead ends: 9761 [2021-11-12 22:42:49,926 INFO L226 Difference]: Without dead ends: 5882 [2021-11-12 22:42:49,930 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:42:49,931 INFO L933 BasicCegarLoop]: 1644 mSDtfsCounter, 1608 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 106.87ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1608 SdHoareTripleChecker+Valid, 2126 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.01ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 131.52ms IncrementalHoareTripleChecker+Time [2021-11-12 22:42:49,931 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1608 Valid, 2126 Invalid, 132 Unknown, 0 Unchecked, 5.01ms Time], IncrementalHoareTripleChecker [5 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 131.52ms Time] [2021-11-12 22:42:49,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5882 states. [2021-11-12 22:42:50,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5882 to 5864. [2021-11-12 22:42:50,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5864 states, 5854 states have (on average 1.3218312265117869) internal successors, (7738), 5863 states have internal predecessors, (7738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:42:50,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5864 states to 5864 states and 7738 transitions. [2021-11-12 22:42:50,843 INFO L78 Accepts]: Start accepts. Automaton has 5864 states and 7738 transitions. Word has length 67 [2021-11-12 22:42:50,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:42:50,844 INFO L470 AbstractCegarLoop]: Abstraction has 5864 states and 7738 transitions. [2021-11-12 22:42:50,844 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:42:50,844 INFO L276 IsEmpty]: Start isEmpty. Operand 5864 states and 7738 transitions. [2021-11-12 22:42:50,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-12 22:42:50,849 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:42:50,850 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:42:50,850 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-12 22:42:50,850 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-12 22:42:50,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:42:50,851 INFO L85 PathProgramCache]: Analyzing trace with hash -985199678, now seen corresponding path program 1 times [2021-11-12 22:42:50,851 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:42:50,851 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87898873] [2021-11-12 22:42:50,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:42:50,852 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:42:50,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:42:50,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:42:50,910 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:42:50,910 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87898873] [2021-11-12 22:42:50,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87898873] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:42:50,910 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:42:50,910 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-12 22:42:50,911 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026602147] [2021-11-12 22:42:50,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:42:50,911 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 22:42:50,911 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:42:50,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 22:42:50,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:42:50,912 INFO L87 Difference]: Start difference. First operand 5864 states and 7738 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:42:52,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:42:52,091 INFO L93 Difference]: Finished difference Result 9124 states and 12150 transitions. [2021-11-12 22:42:52,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 22:42:52,092 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-11-12 22:42:52,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:42:52,097 INFO L225 Difference]: With dead ends: 9124 [2021-11-12 22:42:52,097 INFO L226 Difference]: Without dead ends: 5526 [2021-11-12 22:42:52,101 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:42:52,101 INFO L933 BasicCegarLoop]: 1269 mSDtfsCounter, 1270 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 113.26ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1270 SdHoareTripleChecker+Valid, 1623 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.33ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 140.10ms IncrementalHoareTripleChecker+Time [2021-11-12 22:42:52,102 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1270 Valid, 1623 Invalid, 148 Unknown, 0 Unchecked, 4.33ms Time], IncrementalHoareTripleChecker [9 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 140.10ms Time] [2021-11-12 22:42:52,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5526 states. [2021-11-12 22:42:53,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5526 to 5518. [2021-11-12 22:42:53,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5518 states, 5511 states have (on average 1.330067138450372) internal successors, (7330), 5517 states have internal predecessors, (7330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:42:53,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5518 states to 5518 states and 7330 transitions. [2021-11-12 22:42:53,017 INFO L78 Accepts]: Start accepts. Automaton has 5518 states and 7330 transitions. Word has length 68 [2021-11-12 22:42:53,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:42:53,017 INFO L470 AbstractCegarLoop]: Abstraction has 5518 states and 7330 transitions. [2021-11-12 22:42:53,017 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:42:53,017 INFO L276 IsEmpty]: Start isEmpty. Operand 5518 states and 7330 transitions. [2021-11-12 22:42:53,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-12 22:42:53,022 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:42:53,022 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:42:53,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-12 22:42:53,023 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-12 22:42:53,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:42:53,023 INFO L85 PathProgramCache]: Analyzing trace with hash -746381525, now seen corresponding path program 1 times [2021-11-12 22:42:53,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:42:53,024 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997526962] [2021-11-12 22:42:53,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:42:53,024 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:42:53,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:42:53,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:42:53,088 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:42:53,088 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997526962] [2021-11-12 22:42:53,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997526962] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:42:53,089 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:42:53,089 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-12 22:42:53,089 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089356656] [2021-11-12 22:42:53,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:42:53,090 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 22:42:53,090 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:42:53,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 22:42:53,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:42:53,091 INFO L87 Difference]: Start difference. First operand 5518 states and 7330 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:42:54,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:42:54,505 INFO L93 Difference]: Finished difference Result 8032 states and 10951 transitions. [2021-11-12 22:42:54,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 22:42:54,506 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-11-12 22:42:54,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:42:54,511 INFO L225 Difference]: With dead ends: 8032 [2021-11-12 22:42:54,511 INFO L226 Difference]: Without dead ends: 5641 [2021-11-12 22:42:54,514 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:42:54,515 INFO L933 BasicCegarLoop]: 1328 mSDtfsCounter, 754 mSDsluCounter, 616 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 70.96ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 754 SdHoareTripleChecker+Valid, 1936 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.94ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 86.93ms IncrementalHoareTripleChecker+Time [2021-11-12 22:42:54,515 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [754 Valid, 1936 Invalid, 64 Unknown, 0 Unchecked, 3.94ms Time], IncrementalHoareTripleChecker [11 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 86.93ms Time] [2021-11-12 22:42:54,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5641 states. [2021-11-12 22:42:55,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5641 to 4543. [2021-11-12 22:42:55,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4543 states, 4536 states have (on average 1.3368606701940036) internal successors, (6064), 4542 states have internal predecessors, (6064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:42:55,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4543 states to 4543 states and 6064 transitions. [2021-11-12 22:42:55,389 INFO L78 Accepts]: Start accepts. Automaton has 4543 states and 6064 transitions. Word has length 68 [2021-11-12 22:42:55,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:42:55,390 INFO L470 AbstractCegarLoop]: Abstraction has 4543 states and 6064 transitions. [2021-11-12 22:42:55,390 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:42:55,390 INFO L276 IsEmpty]: Start isEmpty. Operand 4543 states and 6064 transitions. [2021-11-12 22:42:55,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-12 22:42:55,392 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:42:55,392 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:42:55,392 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-12 22:42:55,393 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-12 22:42:55,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:42:55,393 INFO L85 PathProgramCache]: Analyzing trace with hash -1614233913, now seen corresponding path program 1 times [2021-11-12 22:42:55,393 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:42:55,393 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764596060] [2021-11-12 22:42:55,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:42:55,393 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:42:55,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:42:55,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:42:55,464 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:42:55,464 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764596060] [2021-11-12 22:42:55,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764596060] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:42:55,465 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:42:55,465 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-12 22:42:55,465 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222328441] [2021-11-12 22:42:55,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:42:55,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 22:42:55,466 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:42:55,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 22:42:55,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:42:55,467 INFO L87 Difference]: Start difference. First operand 4543 states and 6064 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:42:57,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:42:57,016 INFO L93 Difference]: Finished difference Result 9288 states and 12646 transitions. [2021-11-12 22:42:57,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 22:42:57,016 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-11-12 22:42:57,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:42:57,022 INFO L225 Difference]: With dead ends: 9288 [2021-11-12 22:42:57,022 INFO L226 Difference]: Without dead ends: 6893 [2021-11-12 22:42:57,024 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:42:57,025 INFO L933 BasicCegarLoop]: 1396 mSDtfsCounter, 775 mSDsluCounter, 1096 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 80.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 775 SdHoareTripleChecker+Valid, 2483 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.97ms SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 119.60ms IncrementalHoareTripleChecker+Time [2021-11-12 22:42:57,025 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [775 Valid, 2483 Invalid, 97 Unknown, 0 Unchecked, 2.97ms Time], IncrementalHoareTripleChecker [22 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 119.60ms Time] [2021-11-12 22:42:57,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6893 states. [2021-11-12 22:42:58,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6893 to 6885. [2021-11-12 22:42:58,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6885 states, 6878 states have (on average 1.3412329165455075) internal successors, (9225), 6884 states have internal predecessors, (9225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:42:58,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6885 states to 6885 states and 9225 transitions. [2021-11-12 22:42:58,444 INFO L78 Accepts]: Start accepts. Automaton has 6885 states and 9225 transitions. Word has length 68 [2021-11-12 22:42:58,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:42:58,444 INFO L470 AbstractCegarLoop]: Abstraction has 6885 states and 9225 transitions. [2021-11-12 22:42:58,444 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:42:58,444 INFO L276 IsEmpty]: Start isEmpty. Operand 6885 states and 9225 transitions. [2021-11-12 22:42:58,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-12 22:42:58,447 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:42:58,447 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:42:58,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-12 22:42:58,447 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-12 22:42:58,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:42:58,447 INFO L85 PathProgramCache]: Analyzing trace with hash 563894881, now seen corresponding path program 1 times [2021-11-12 22:42:58,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:42:58,448 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857627671] [2021-11-12 22:42:58,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:42:58,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:42:58,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:42:58,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:42:58,500 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:42:58,501 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857627671] [2021-11-12 22:42:58,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857627671] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:42:58,501 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:42:58,501 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-12 22:42:58,501 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512723042] [2021-11-12 22:42:58,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:42:58,502 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 22:42:58,502 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:42:58,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 22:42:58,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:42:58,503 INFO L87 Difference]: Start difference. First operand 6885 states and 9225 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:43:01,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:43:01,135 INFO L93 Difference]: Finished difference Result 14907 states and 20325 transitions. [2021-11-12 22:43:01,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 22:43:01,135 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-11-12 22:43:01,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:43:01,145 INFO L225 Difference]: With dead ends: 14907 [2021-11-12 22:43:01,145 INFO L226 Difference]: Without dead ends: 10329 [2021-11-12 22:43:01,149 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:43:01,150 INFO L933 BasicCegarLoop]: 1442 mSDtfsCounter, 669 mSDsluCounter, 1087 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 100.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 669 SdHoareTripleChecker+Valid, 2519 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.03ms SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 125.29ms IncrementalHoareTripleChecker+Time [2021-11-12 22:43:01,150 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [669 Valid, 2519 Invalid, 130 Unknown, 0 Unchecked, 3.03ms Time], IncrementalHoareTripleChecker [36 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 125.29ms Time] [2021-11-12 22:43:01,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10329 states. [2021-11-12 22:43:03,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10329 to 10321. [2021-11-12 22:43:03,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10321 states, 10314 states have (on average 1.3368237347294938) internal successors, (13788), 10320 states have internal predecessors, (13788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:43:03,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10321 states to 10321 states and 13788 transitions. [2021-11-12 22:43:03,567 INFO L78 Accepts]: Start accepts. Automaton has 10321 states and 13788 transitions. Word has length 68 [2021-11-12 22:43:03,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:43:03,567 INFO L470 AbstractCegarLoop]: Abstraction has 10321 states and 13788 transitions. [2021-11-12 22:43:03,567 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:43:03,567 INFO L276 IsEmpty]: Start isEmpty. Operand 10321 states and 13788 transitions. [2021-11-12 22:43:03,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-12 22:43:03,570 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:43:03,570 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:43:03,570 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-12 22:43:03,571 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-12 22:43:03,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:43:03,571 INFO L85 PathProgramCache]: Analyzing trace with hash -2399851, now seen corresponding path program 1 times [2021-11-12 22:43:03,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:43:03,572 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909754055] [2021-11-12 22:43:03,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:43:03,572 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:43:03,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:43:03,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:43:03,690 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:43:03,690 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909754055] [2021-11-12 22:43:03,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909754055] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:43:03,690 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:43:03,690 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-12 22:43:03,691 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031098512] [2021-11-12 22:43:03,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:43:03,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 22:43:03,691 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:43:03,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 22:43:03,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-12 22:43:03,692 INFO L87 Difference]: Start difference. First operand 10321 states and 13788 transitions. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 7 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:43:09,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:43:09,423 INFO L93 Difference]: Finished difference Result 15666 states and 20942 transitions. [2021-11-12 22:43:09,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 22:43:09,424 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 7 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-11-12 22:43:09,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:43:09,439 INFO L225 Difference]: With dead ends: 15666 [2021-11-12 22:43:09,439 INFO L226 Difference]: Without dead ends: 15055 [2021-11-12 22:43:09,443 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2021-11-12 22:43:09,444 INFO L933 BasicCegarLoop]: 749 mSDtfsCounter, 4138 mSDsluCounter, 2835 mSDsCounter, 0 mSdLazyCounter, 3411 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1295.77ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4138 SdHoareTripleChecker+Valid, 3584 SdHoareTripleChecker+Invalid, 3514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.36ms SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 3411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1601.56ms IncrementalHoareTripleChecker+Time [2021-11-12 22:43:09,444 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4138 Valid, 3584 Invalid, 3514 Unknown, 0 Unchecked, 13.36ms Time], IncrementalHoareTripleChecker [103 Valid, 3411 Invalid, 0 Unknown, 0 Unchecked, 1601.56ms Time] [2021-11-12 22:43:09,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15055 states. [2021-11-12 22:43:12,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15055 to 10320. [2021-11-12 22:43:12,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10320 states, 10313 states have (on average 1.3367594298458256) internal successors, (13786), 10319 states have internal predecessors, (13786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:43:12,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10320 states to 10320 states and 13786 transitions. [2021-11-12 22:43:12,222 INFO L78 Accepts]: Start accepts. Automaton has 10320 states and 13786 transitions. Word has length 69 [2021-11-12 22:43:12,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:43:12,222 INFO L470 AbstractCegarLoop]: Abstraction has 10320 states and 13786 transitions. [2021-11-12 22:43:12,222 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 7 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:43:12,222 INFO L276 IsEmpty]: Start isEmpty. Operand 10320 states and 13786 transitions. [2021-11-12 22:43:12,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-12 22:43:12,225 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:43:12,225 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:43:12,226 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-12 22:43:12,226 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-12 22:43:12,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:43:12,226 INFO L85 PathProgramCache]: Analyzing trace with hash 1878130755, now seen corresponding path program 1 times [2021-11-12 22:43:12,226 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:43:12,226 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218417671] [2021-11-12 22:43:12,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:43:12,227 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:43:12,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:43:12,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:43:12,474 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:43:12,474 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218417671] [2021-11-12 22:43:12,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218417671] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:43:12,474 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:43:12,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-12 22:43:12,474 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482254623] [2021-11-12 22:43:12,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:43:12,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-12 22:43:12,475 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:43:12,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-12 22:43:12,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-12 22:43:12,475 INFO L87 Difference]: Start difference. First operand 10320 states and 13786 transitions. Second operand has 10 states, 10 states have (on average 6.9) internal successors, (69), 9 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:43:19,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:43:19,717 INFO L93 Difference]: Finished difference Result 22293 states and 30218 transitions. [2021-11-12 22:43:19,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 22:43:19,719 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.9) internal successors, (69), 9 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-11-12 22:43:19,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:43:19,741 INFO L225 Difference]: With dead ends: 22293 [2021-11-12 22:43:19,741 INFO L226 Difference]: Without dead ends: 20281 [2021-11-12 22:43:19,747 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=136, Invalid=284, Unknown=0, NotChecked=0, Total=420 [2021-11-12 22:43:19,748 INFO L933 BasicCegarLoop]: 1303 mSDtfsCounter, 5406 mSDsluCounter, 4509 mSDsCounter, 0 mSdLazyCounter, 954 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 606.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5406 SdHoareTripleChecker+Valid, 5748 SdHoareTripleChecker+Invalid, 1023 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.49ms SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 954 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 721.67ms IncrementalHoareTripleChecker+Time [2021-11-12 22:43:19,749 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5406 Valid, 5748 Invalid, 1023 Unknown, 0 Unchecked, 15.49ms Time], IncrementalHoareTripleChecker [69 Valid, 954 Invalid, 0 Unknown, 0 Unchecked, 721.67ms Time] [2021-11-12 22:43:19,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20281 states. [2021-11-12 22:43:22,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20281 to 10190. [2021-11-12 22:43:22,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10190 states, 10186 states have (on average 1.3366385234635774) internal successors, (13615), 10189 states have internal predecessors, (13615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:43:22,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10190 states to 10190 states and 13615 transitions. [2021-11-12 22:43:22,593 INFO L78 Accepts]: Start accepts. Automaton has 10190 states and 13615 transitions. Word has length 69 [2021-11-12 22:43:22,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:43:22,593 INFO L470 AbstractCegarLoop]: Abstraction has 10190 states and 13615 transitions. [2021-11-12 22:43:22,593 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.9) internal successors, (69), 9 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:43:22,593 INFO L276 IsEmpty]: Start isEmpty. Operand 10190 states and 13615 transitions. [2021-11-12 22:43:22,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-12 22:43:22,598 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:43:22,598 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:43:22,598 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-12 22:43:22,598 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-12 22:43:22,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:43:22,599 INFO L85 PathProgramCache]: Analyzing trace with hash 1898328567, now seen corresponding path program 1 times [2021-11-12 22:43:22,599 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:43:22,599 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908670484] [2021-11-12 22:43:22,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:43:22,600 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:43:22,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:43:22,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:43:22,649 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:43:22,650 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908670484] [2021-11-12 22:43:22,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908670484] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:43:22,650 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:43:22,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-12 22:43:22,650 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089140211] [2021-11-12 22:43:22,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:43:22,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 22:43:22,651 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:43:22,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 22:43:22,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:43:22,652 INFO L87 Difference]: Start difference. First operand 10190 states and 13615 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:43:26,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:43:26,216 INFO L93 Difference]: Finished difference Result 19141 states and 25869 transitions. [2021-11-12 22:43:26,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 22:43:26,216 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-11-12 22:43:26,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:43:26,225 INFO L225 Difference]: With dead ends: 19141 [2021-11-12 22:43:26,225 INFO L226 Difference]: Without dead ends: 10404 [2021-11-12 22:43:26,232 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:43:26,233 INFO L933 BasicCegarLoop]: 1174 mSDtfsCounter, 933 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 123.92ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 933 SdHoareTripleChecker+Valid, 1639 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.21ms SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 156.50ms IncrementalHoareTripleChecker+Time [2021-11-12 22:43:26,233 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [933 Valid, 1639 Invalid, 171 Unknown, 0 Unchecked, 4.21ms Time], IncrementalHoareTripleChecker [18 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 156.50ms Time] [2021-11-12 22:43:26,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10404 states. [2021-11-12 22:43:28,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10404 to 8323. [2021-11-12 22:43:28,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8323 states, 8319 states have (on average 1.3448731818728212) internal successors, (11188), 8322 states have internal predecessors, (11188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:43:28,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8323 states to 8323 states and 11188 transitions. [2021-11-12 22:43:28,610 INFO L78 Accepts]: Start accepts. Automaton has 8323 states and 11188 transitions. Word has length 69 [2021-11-12 22:43:28,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:43:28,611 INFO L470 AbstractCegarLoop]: Abstraction has 8323 states and 11188 transitions. [2021-11-12 22:43:28,611 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:43:28,611 INFO L276 IsEmpty]: Start isEmpty. Operand 8323 states and 11188 transitions. [2021-11-12 22:43:28,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-12 22:43:28,613 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:43:28,613 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:43:28,613 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-12 22:43:28,613 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-12 22:43:28,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:43:28,614 INFO L85 PathProgramCache]: Analyzing trace with hash 936354534, now seen corresponding path program 1 times [2021-11-12 22:43:28,614 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:43:28,614 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424420973] [2021-11-12 22:43:28,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:43:28,614 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:43:28,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:43:28,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:43:28,776 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:43:28,776 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424420973] [2021-11-12 22:43:28,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424420973] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:43:28,776 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:43:28,776 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-12 22:43:28,776 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129634528] [2021-11-12 22:43:28,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:43:28,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-12 22:43:28,777 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:43:28,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-12 22:43:28,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-12 22:43:28,777 INFO L87 Difference]: Start difference. First operand 8323 states and 11188 transitions. Second operand has 10 states, 10 states have (on average 7.0) internal successors, (70), 9 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:43:37,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:43:37,881 INFO L93 Difference]: Finished difference Result 21930 states and 29658 transitions. [2021-11-12 22:43:37,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-12 22:43:37,883 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.0) internal successors, (70), 9 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-11-12 22:43:37,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:43:37,905 INFO L225 Difference]: With dead ends: 21930 [2021-11-12 22:43:37,905 INFO L226 Difference]: Without dead ends: 19902 [2021-11-12 22:43:37,911 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=181, Invalid=521, Unknown=0, NotChecked=0, Total=702 [2021-11-12 22:43:37,911 INFO L933 BasicCegarLoop]: 778 mSDtfsCounter, 4629 mSDsluCounter, 2928 mSDsCounter, 0 mSdLazyCounter, 4041 mSolverCounterSat, 218 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1651.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4629 SdHoareTripleChecker+Valid, 3706 SdHoareTripleChecker+Invalid, 4259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.76ms SdHoareTripleChecker+Time, 218 IncrementalHoareTripleChecker+Valid, 4041 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2010.18ms IncrementalHoareTripleChecker+Time [2021-11-12 22:43:37,912 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4629 Valid, 3706 Invalid, 4259 Unknown, 0 Unchecked, 16.76ms Time], IncrementalHoareTripleChecker [218 Valid, 4041 Invalid, 0 Unknown, 0 Unchecked, 2010.18ms Time] [2021-11-12 22:43:37,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19902 states. [2021-11-12 22:43:40,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19902 to 8251. [2021-11-12 22:43:40,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8251 states, 8247 states have (on average 1.345822723414575) internal successors, (11099), 8250 states have internal predecessors, (11099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:43:40,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8251 states to 8251 states and 11099 transitions. [2021-11-12 22:43:40,461 INFO L78 Accepts]: Start accepts. Automaton has 8251 states and 11099 transitions. Word has length 70 [2021-11-12 22:43:40,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:43:40,461 INFO L470 AbstractCegarLoop]: Abstraction has 8251 states and 11099 transitions. [2021-11-12 22:43:40,461 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.0) internal successors, (70), 9 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:43:40,461 INFO L276 IsEmpty]: Start isEmpty. Operand 8251 states and 11099 transitions. [2021-11-12 22:43:40,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-12 22:43:40,463 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:43:40,463 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:43:40,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-12 22:43:40,463 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-12 22:43:40,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:43:40,464 INFO L85 PathProgramCache]: Analyzing trace with hash 521195886, now seen corresponding path program 1 times [2021-11-12 22:43:40,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:43:40,464 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644230811] [2021-11-12 22:43:40,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:43:40,464 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:43:40,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:43:40,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:43:40,579 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:43:40,580 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644230811] [2021-11-12 22:43:40,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644230811] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:43:40,580 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:43:40,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-12 22:43:40,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286574369] [2021-11-12 22:43:40,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:43:40,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 22:43:40,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:43:40,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 22:43:40,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-12 22:43:40,582 INFO L87 Difference]: Start difference. First operand 8251 states and 11099 transitions. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:43:46,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:43:46,225 INFO L93 Difference]: Finished difference Result 13436 states and 18049 transitions. [2021-11-12 22:43:46,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 22:43:46,226 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-11-12 22:43:46,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:43:46,244 INFO L225 Difference]: With dead ends: 13436 [2021-11-12 22:43:46,245 INFO L226 Difference]: Without dead ends: 12821 [2021-11-12 22:43:46,249 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-11-12 22:43:46,250 INFO L933 BasicCegarLoop]: 619 mSDtfsCounter, 3441 mSDsluCounter, 1872 mSDsCounter, 0 mSdLazyCounter, 2482 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1069.45ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3441 SdHoareTripleChecker+Valid, 2491 SdHoareTripleChecker+Invalid, 2571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.63ms SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 2482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1310.52ms IncrementalHoareTripleChecker+Time [2021-11-12 22:43:46,250 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3441 Valid, 2491 Invalid, 2571 Unknown, 0 Unchecked, 10.63ms Time], IncrementalHoareTripleChecker [89 Valid, 2482 Invalid, 0 Unknown, 0 Unchecked, 1310.52ms Time] [2021-11-12 22:43:46,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12821 states. [2021-11-12 22:43:48,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12821 to 8251. [2021-11-12 22:43:48,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8251 states, 8247 states have (on average 1.345701467200194) internal successors, (11098), 8250 states have internal predecessors, (11098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:43:48,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8251 states to 8251 states and 11098 transitions. [2021-11-12 22:43:48,831 INFO L78 Accepts]: Start accepts. Automaton has 8251 states and 11098 transitions. Word has length 70 [2021-11-12 22:43:48,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:43:48,831 INFO L470 AbstractCegarLoop]: Abstraction has 8251 states and 11098 transitions. [2021-11-12 22:43:48,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:43:48,832 INFO L276 IsEmpty]: Start isEmpty. Operand 8251 states and 11098 transitions. [2021-11-12 22:43:48,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-12 22:43:48,833 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:43:48,834 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:43:48,834 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-12 22:43:48,834 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-12 22:43:48,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:43:48,834 INFO L85 PathProgramCache]: Analyzing trace with hash 358544031, now seen corresponding path program 1 times [2021-11-12 22:43:48,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:43:48,835 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975302190] [2021-11-12 22:43:48,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:43:48,835 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:43:48,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:43:48,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:43:48,945 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:43:48,946 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975302190] [2021-11-12 22:43:48,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975302190] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:43:48,946 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:43:48,946 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-12 22:43:48,946 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750996069] [2021-11-12 22:43:48,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:43:48,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 22:43:48,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:43:48,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 22:43:48,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-12 22:43:48,948 INFO L87 Difference]: Start difference. First operand 8251 states and 11098 transitions. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:43:55,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:43:55,600 INFO L93 Difference]: Finished difference Result 15519 states and 20914 transitions. [2021-11-12 22:43:55,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 22:43:55,600 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-11-12 22:43:55,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:43:55,614 INFO L225 Difference]: With dead ends: 15519 [2021-11-12 22:43:55,615 INFO L226 Difference]: Without dead ends: 14565 [2021-11-12 22:43:55,618 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2021-11-12 22:43:55,618 INFO L933 BasicCegarLoop]: 742 mSDtfsCounter, 3582 mSDsluCounter, 2470 mSDsCounter, 0 mSdLazyCounter, 3476 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1283.27ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3582 SdHoareTripleChecker+Valid, 3212 SdHoareTripleChecker+Invalid, 3575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.64ms SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 3476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1578.57ms IncrementalHoareTripleChecker+Time [2021-11-12 22:43:55,619 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3582 Valid, 3212 Invalid, 3575 Unknown, 0 Unchecked, 11.64ms Time], IncrementalHoareTripleChecker [99 Valid, 3476 Invalid, 0 Unknown, 0 Unchecked, 1578.57ms Time] [2021-11-12 22:43:55,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14565 states. [2021-11-12 22:43:58,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14565 to 8251. [2021-11-12 22:43:58,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8251 states, 8247 states have (on average 1.345580210985813) internal successors, (11097), 8250 states have internal predecessors, (11097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:43:58,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8251 states to 8251 states and 11097 transitions. [2021-11-12 22:43:58,173 INFO L78 Accepts]: Start accepts. Automaton has 8251 states and 11097 transitions. Word has length 70 [2021-11-12 22:43:58,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:43:58,174 INFO L470 AbstractCegarLoop]: Abstraction has 8251 states and 11097 transitions. [2021-11-12 22:43:58,174 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:43:58,174 INFO L276 IsEmpty]: Start isEmpty. Operand 8251 states and 11097 transitions. [2021-11-12 22:43:58,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-12 22:43:58,176 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:43:58,176 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:43:58,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-12 22:43:58,177 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-12 22:43:58,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:43:58,177 INFO L85 PathProgramCache]: Analyzing trace with hash 1750057004, now seen corresponding path program 1 times [2021-11-12 22:43:58,177 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:43:58,178 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85093752] [2021-11-12 22:43:58,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:43:58,178 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:43:58,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:43:58,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:43:58,233 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:43:58,233 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85093752] [2021-11-12 22:43:58,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85093752] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:43:58,233 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:43:58,233 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-12 22:43:58,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280538386] [2021-11-12 22:43:58,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:43:58,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 22:43:58,234 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:43:58,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 22:43:58,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:43:58,235 INFO L87 Difference]: Start difference. First operand 8251 states and 11097 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:44:02,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:44:02,286 INFO L93 Difference]: Finished difference Result 18081 states and 24924 transitions. [2021-11-12 22:44:02,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 22:44:02,287 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-11-12 22:44:02,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:44:02,298 INFO L225 Difference]: With dead ends: 18081 [2021-11-12 22:44:02,299 INFO L226 Difference]: Without dead ends: 11842 [2021-11-12 22:44:02,306 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:44:02,307 INFO L933 BasicCegarLoop]: 1085 mSDtfsCounter, 602 mSDsluCounter, 509 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 63.54ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 602 SdHoareTripleChecker+Valid, 1587 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.36ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 77.38ms IncrementalHoareTripleChecker+Time [2021-11-12 22:44:02,307 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [602 Valid, 1587 Invalid, 69 Unknown, 0 Unchecked, 2.36ms Time], IncrementalHoareTripleChecker [16 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 77.38ms Time] [2021-11-12 22:44:02,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11842 states. [2021-11-12 22:44:05,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11842 to 10551. [2021-11-12 22:44:05,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10551 states, 10547 states have (on average 1.357068360671281) internal successors, (14313), 10550 states have internal predecessors, (14313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:44:05,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10551 states to 10551 states and 14313 transitions. [2021-11-12 22:44:05,876 INFO L78 Accepts]: Start accepts. Automaton has 10551 states and 14313 transitions. Word has length 71 [2021-11-12 22:44:05,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:44:05,876 INFO L470 AbstractCegarLoop]: Abstraction has 10551 states and 14313 transitions. [2021-11-12 22:44:05,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:44:05,876 INFO L276 IsEmpty]: Start isEmpty. Operand 10551 states and 14313 transitions. [2021-11-12 22:44:05,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-12 22:44:05,878 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:44:05,879 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:44:05,879 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-12 22:44:05,879 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-12 22:44:05,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:44:05,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1762815561, now seen corresponding path program 1 times [2021-11-12 22:44:05,879 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:44:05,879 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91004603] [2021-11-12 22:44:05,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:44:05,880 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:44:05,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:44:06,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:44:06,244 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:44:06,244 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91004603] [2021-11-12 22:44:06,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91004603] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:44:06,245 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:44:06,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-12 22:44:06,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791643374] [2021-11-12 22:44:06,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:44:06,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-12 22:44:06,245 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:44:06,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-12 22:44:06,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-12 22:44:06,246 INFO L87 Difference]: Start difference. First operand 10551 states and 14313 transitions. Second operand has 13 states, 13 states have (on average 5.538461538461538) internal successors, (72), 12 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:44:21,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:44:21,051 INFO L93 Difference]: Finished difference Result 31966 states and 43477 transitions. [2021-11-12 22:44:21,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-12 22:44:21,051 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.538461538461538) internal successors, (72), 12 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2021-11-12 22:44:21,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:44:21,091 INFO L225 Difference]: With dead ends: 31966 [2021-11-12 22:44:21,091 INFO L226 Difference]: Without dead ends: 31393 [2021-11-12 22:44:21,098 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=208, Invalid=722, Unknown=0, NotChecked=0, Total=930 [2021-11-12 22:44:21,099 INFO L933 BasicCegarLoop]: 1490 mSDtfsCounter, 6765 mSDsluCounter, 8739 mSDsCounter, 0 mSdLazyCounter, 2008 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1069.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6765 SdHoareTripleChecker+Valid, 9993 SdHoareTripleChecker+Invalid, 2176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.31ms SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 2008 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1291.09ms IncrementalHoareTripleChecker+Time [2021-11-12 22:44:21,099 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6765 Valid, 9993 Invalid, 2176 Unknown, 0 Unchecked, 21.31ms Time], IncrementalHoareTripleChecker [168 Valid, 2008 Invalid, 0 Unknown, 0 Unchecked, 1291.09ms Time] [2021-11-12 22:44:21,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31393 states. [2021-11-12 22:44:25,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31393 to 10540. [2021-11-12 22:44:25,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10540 states, 10537 states have (on average 1.3570276169687767) internal successors, (14299), 10539 states have internal predecessors, (14299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:44:25,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10540 states to 10540 states and 14299 transitions. [2021-11-12 22:44:25,201 INFO L78 Accepts]: Start accepts. Automaton has 10540 states and 14299 transitions. Word has length 72 [2021-11-12 22:44:25,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:44:25,201 INFO L470 AbstractCegarLoop]: Abstraction has 10540 states and 14299 transitions. [2021-11-12 22:44:25,201 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.538461538461538) internal successors, (72), 12 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:44:25,201 INFO L276 IsEmpty]: Start isEmpty. Operand 10540 states and 14299 transitions. [2021-11-12 22:44:25,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-12 22:44:25,204 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:44:25,204 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:44:25,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-12 22:44:25,204 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-12 22:44:25,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:44:25,204 INFO L85 PathProgramCache]: Analyzing trace with hash -891142700, now seen corresponding path program 1 times [2021-11-12 22:44:25,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:44:25,205 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771163854] [2021-11-12 22:44:25,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:44:25,205 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:44:25,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:44:25,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:44:25,252 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:44:25,252 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771163854] [2021-11-12 22:44:25,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771163854] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:44:25,252 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:44:25,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-12 22:44:25,253 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955785646] [2021-11-12 22:44:25,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:44:25,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 22:44:25,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:44:25,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 22:44:25,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:44:25,254 INFO L87 Difference]: Start difference. First operand 10540 states and 14299 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:44:29,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:44:29,750 INFO L93 Difference]: Finished difference Result 20531 states and 28117 transitions. [2021-11-12 22:44:29,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 22:44:29,750 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2021-11-12 22:44:29,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:44:29,760 INFO L225 Difference]: With dead ends: 20531 [2021-11-12 22:44:29,760 INFO L226 Difference]: Without dead ends: 10856 [2021-11-12 22:44:29,767 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:44:29,768 INFO L933 BasicCegarLoop]: 1075 mSDtfsCounter, 954 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 76.25ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 954 SdHoareTripleChecker+Valid, 1387 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.89ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 99.25ms IncrementalHoareTripleChecker+Time [2021-11-12 22:44:29,768 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [954 Valid, 1387 Invalid, 110 Unknown, 0 Unchecked, 2.89ms Time], IncrementalHoareTripleChecker [10 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 99.25ms Time] [2021-11-12 22:44:29,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10856 states. [2021-11-12 22:44:33,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10856 to 9610. [2021-11-12 22:44:33,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9610 states, 9607 states have (on average 1.3642135942541898) internal successors, (13106), 9609 states have internal predecessors, (13106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:44:33,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9610 states to 9610 states and 13106 transitions. [2021-11-12 22:44:33,432 INFO L78 Accepts]: Start accepts. Automaton has 9610 states and 13106 transitions. Word has length 72 [2021-11-12 22:44:33,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:44:33,432 INFO L470 AbstractCegarLoop]: Abstraction has 9610 states and 13106 transitions. [2021-11-12 22:44:33,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:44:33,432 INFO L276 IsEmpty]: Start isEmpty. Operand 9610 states and 13106 transitions. [2021-11-12 22:44:33,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-12 22:44:33,434 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:44:33,434 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:44:33,434 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-12 22:44:33,434 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-12 22:44:33,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:44:33,434 INFO L85 PathProgramCache]: Analyzing trace with hash 830639487, now seen corresponding path program 1 times [2021-11-12 22:44:33,434 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:44:33,434 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549387567] [2021-11-12 22:44:33,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:44:33,435 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:44:33,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:44:33,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:44:33,720 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:44:33,720 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549387567] [2021-11-12 22:44:33,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549387567] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:44:33,720 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:44:33,720 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-12 22:44:33,720 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767712233] [2021-11-12 22:44:33,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:44:33,721 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-12 22:44:33,721 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:44:33,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-12 22:44:33,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-12 22:44:33,721 INFO L87 Difference]: Start difference. First operand 9610 states and 13106 transitions. Second operand has 12 states, 12 states have (on average 6.083333333333333) internal successors, (73), 11 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:44:41,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:44:41,407 INFO L93 Difference]: Finished difference Result 16624 states and 22570 transitions. [2021-11-12 22:44:41,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 22:44:41,408 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.083333333333333) internal successors, (73), 11 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2021-11-12 22:44:41,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:44:41,426 INFO L225 Difference]: With dead ends: 16624 [2021-11-12 22:44:41,426 INFO L226 Difference]: Without dead ends: 16058 [2021-11-12 22:44:41,430 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2021-11-12 22:44:41,431 INFO L933 BasicCegarLoop]: 1060 mSDtfsCounter, 5873 mSDsluCounter, 3767 mSDsCounter, 0 mSdLazyCounter, 751 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 456.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5873 SdHoareTripleChecker+Valid, 4753 SdHoareTripleChecker+Invalid, 907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.62ms SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 751 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 545.61ms IncrementalHoareTripleChecker+Time [2021-11-12 22:44:41,431 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5873 Valid, 4753 Invalid, 907 Unknown, 0 Unchecked, 11.62ms Time], IncrementalHoareTripleChecker [156 Valid, 751 Invalid, 0 Unknown, 0 Unchecked, 545.61ms Time] [2021-11-12 22:44:41,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16058 states. [2021-11-12 22:44:45,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16058 to 9606. [2021-11-12 22:44:45,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9606 states, 9604 states have (on average 1.364119117034569) internal successors, (13101), 9605 states have internal predecessors, (13101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:44:45,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9606 states to 9606 states and 13101 transitions. [2021-11-12 22:44:45,253 INFO L78 Accepts]: Start accepts. Automaton has 9606 states and 13101 transitions. Word has length 73 [2021-11-12 22:44:45,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:44:45,253 INFO L470 AbstractCegarLoop]: Abstraction has 9606 states and 13101 transitions. [2021-11-12 22:44:45,254 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.083333333333333) internal successors, (73), 11 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:44:45,254 INFO L276 IsEmpty]: Start isEmpty. Operand 9606 states and 13101 transitions. [2021-11-12 22:44:45,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-12 22:44:45,255 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:44:45,256 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:44:45,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-12 22:44:45,256 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-12 22:44:45,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:44:45,256 INFO L85 PathProgramCache]: Analyzing trace with hash -581497913, now seen corresponding path program 1 times [2021-11-12 22:44:45,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:44:45,257 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164849394] [2021-11-12 22:44:45,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:44:45,257 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:44:45,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:44:45,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:44:45,584 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:44:45,584 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164849394] [2021-11-12 22:44:45,585 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164849394] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:44:45,585 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:44:45,585 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-12 22:44:45,585 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728864940] [2021-11-12 22:44:45,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:44:45,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-12 22:44:45,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:44:45,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-12 22:44:45,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-12 22:44:45,586 INFO L87 Difference]: Start difference. First operand 9606 states and 13101 transitions. Second operand has 13 states, 13 states have (on average 5.615384615384615) internal successors, (73), 12 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:45:04,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:45:04,115 INFO L93 Difference]: Finished difference Result 35079 states and 47591 transitions. [2021-11-12 22:45:04,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-12 22:45:04,115 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.615384615384615) internal successors, (73), 12 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2021-11-12 22:45:04,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:45:04,156 INFO L225 Difference]: With dead ends: 35079 [2021-11-12 22:45:04,156 INFO L226 Difference]: Without dead ends: 34496 [2021-11-12 22:45:04,164 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=237, Invalid=885, Unknown=0, NotChecked=0, Total=1122 [2021-11-12 22:45:04,164 INFO L933 BasicCegarLoop]: 1545 mSDtfsCounter, 6544 mSDsluCounter, 9253 mSDsCounter, 0 mSdLazyCounter, 2183 mSolverCounterSat, 190 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1179.23ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6544 SdHoareTripleChecker+Valid, 10580 SdHoareTripleChecker+Invalid, 2373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 23.14ms SdHoareTripleChecker+Time, 190 IncrementalHoareTripleChecker+Valid, 2183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1432.60ms IncrementalHoareTripleChecker+Time [2021-11-12 22:45:04,164 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6544 Valid, 10580 Invalid, 2373 Unknown, 0 Unchecked, 23.14ms Time], IncrementalHoareTripleChecker [190 Valid, 2183 Invalid, 0 Unknown, 0 Unchecked, 1432.60ms Time] [2021-11-12 22:45:04,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34496 states. [2021-11-12 22:45:08,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34496 to 9585. [2021-11-12 22:45:08,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9585 states, 9584 states have (on average 1.3642529215358932) internal successors, (13075), 9584 states have internal predecessors, (13075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:45:08,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9585 states to 9585 states and 13075 transitions. [2021-11-12 22:45:08,263 INFO L78 Accepts]: Start accepts. Automaton has 9585 states and 13075 transitions. Word has length 73 [2021-11-12 22:45:08,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:45:08,263 INFO L470 AbstractCegarLoop]: Abstraction has 9585 states and 13075 transitions. [2021-11-12 22:45:08,264 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.615384615384615) internal successors, (73), 12 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:45:08,264 INFO L276 IsEmpty]: Start isEmpty. Operand 9585 states and 13075 transitions. [2021-11-12 22:45:08,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-12 22:45:08,265 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:45:08,266 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:45:08,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-12 22:45:08,266 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-12 22:45:08,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:45:08,266 INFO L85 PathProgramCache]: Analyzing trace with hash -397158000, now seen corresponding path program 1 times [2021-11-12 22:45:08,267 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:45:08,267 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154580114] [2021-11-12 22:45:08,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:45:08,267 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:45:08,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:45:08,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:45:08,322 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:45:08,322 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154580114] [2021-11-12 22:45:08,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154580114] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:45:08,322 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:45:08,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-12 22:45:08,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319677161] [2021-11-12 22:45:08,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:45:08,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 22:45:08,323 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:45:08,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 22:45:08,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:45:08,324 INFO L87 Difference]: Start difference. First operand 9585 states and 13075 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:45:14,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:45:14,457 INFO L93 Difference]: Finished difference Result 22633 states and 31293 transitions. [2021-11-12 22:45:14,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 22:45:14,458 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2021-11-12 22:45:14,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:45:14,474 INFO L225 Difference]: With dead ends: 22633 [2021-11-12 22:45:14,474 INFO L226 Difference]: Without dead ends: 14183 [2021-11-12 22:45:14,480 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:45:14,481 INFO L933 BasicCegarLoop]: 1014 mSDtfsCounter, 623 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 76.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 623 SdHoareTripleChecker+Valid, 1374 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.35ms SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 94.73ms IncrementalHoareTripleChecker+Time [2021-11-12 22:45:14,481 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [623 Valid, 1374 Invalid, 95 Unknown, 0 Unchecked, 2.35ms Time], IncrementalHoareTripleChecker [31 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 94.73ms Time] [2021-11-12 22:45:14,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14183 states. [2021-11-12 22:45:19,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14183 to 13163. [2021-11-12 22:45:19,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13163 states, 13162 states have (on average 1.361951071265765) internal successors, (17926), 13162 states have internal predecessors, (17926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:45:20,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13163 states to 13163 states and 17926 transitions. [2021-11-12 22:45:20,001 INFO L78 Accepts]: Start accepts. Automaton has 13163 states and 17926 transitions. Word has length 73 [2021-11-12 22:45:20,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:45:20,001 INFO L470 AbstractCegarLoop]: Abstraction has 13163 states and 17926 transitions. [2021-11-12 22:45:20,001 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:45:20,001 INFO L276 IsEmpty]: Start isEmpty. Operand 13163 states and 17926 transitions. [2021-11-12 22:45:20,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-12 22:45:20,003 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:45:20,003 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:45:20,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-12 22:45:20,003 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-12 22:45:20,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:45:20,004 INFO L85 PathProgramCache]: Analyzing trace with hash 491799337, now seen corresponding path program 1 times [2021-11-12 22:45:20,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:45:20,004 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063925975] [2021-11-12 22:45:20,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:45:20,004 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:45:20,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:45:20,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:45:20,103 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:45:20,103 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063925975] [2021-11-12 22:45:20,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063925975] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:45:20,103 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:45:20,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-12 22:45:20,103 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531809039] [2021-11-12 22:45:20,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:45:20,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 22:45:20,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:45:20,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 22:45:20,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-12 22:45:20,105 INFO L87 Difference]: Start difference. First operand 13163 states and 17926 transitions. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:45:25,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:45:25,754 INFO L93 Difference]: Finished difference Result 24435 states and 33470 transitions. [2021-11-12 22:45:25,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 22:45:25,755 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2021-11-12 22:45:25,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:45:25,769 INFO L225 Difference]: With dead ends: 24435 [2021-11-12 22:45:25,769 INFO L226 Difference]: Without dead ends: 12439 [2021-11-12 22:45:25,777 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-12 22:45:25,777 INFO L933 BasicCegarLoop]: 892 mSDtfsCounter, 1351 mSDsluCounter, 696 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 125.28ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1351 SdHoareTripleChecker+Valid, 1581 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.44ms SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 152.11ms IncrementalHoareTripleChecker+Time [2021-11-12 22:45:25,778 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1351 Valid, 1581 Invalid, 172 Unknown, 0 Unchecked, 3.44ms Time], IncrementalHoareTripleChecker [18 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 152.11ms Time] [2021-11-12 22:45:25,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12439 states. [2021-11-12 22:45:31,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12439 to 12433. [2021-11-12 22:45:31,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12433 states, 12432 states have (on average 1.3564189189189189) internal successors, (16863), 12432 states have internal predecessors, (16863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:45:31,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12433 states to 12433 states and 16863 transitions. [2021-11-12 22:45:31,327 INFO L78 Accepts]: Start accepts. Automaton has 12433 states and 16863 transitions. Word has length 73 [2021-11-12 22:45:31,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:45:31,328 INFO L470 AbstractCegarLoop]: Abstraction has 12433 states and 16863 transitions. [2021-11-12 22:45:31,328 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:45:31,328 INFO L276 IsEmpty]: Start isEmpty. Operand 12433 states and 16863 transitions. [2021-11-12 22:45:31,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-12 22:45:31,331 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:45:31,331 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:45:31,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-12 22:45:31,332 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-12 22:45:31,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:45:31,332 INFO L85 PathProgramCache]: Analyzing trace with hash 438553479, now seen corresponding path program 1 times [2021-11-12 22:45:31,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:45:31,333 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214736012] [2021-11-12 22:45:31,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:45:31,333 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:45:31,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:45:31,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:45:31,396 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:45:31,396 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214736012] [2021-11-12 22:45:31,397 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214736012] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:45:31,397 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:45:31,397 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-12 22:45:31,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415664163] [2021-11-12 22:45:31,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:45:31,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 22:45:31,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:45:31,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 22:45:31,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:45:31,399 INFO L87 Difference]: Start difference. First operand 12433 states and 16863 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:45:39,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:45:39,667 INFO L93 Difference]: Finished difference Result 29660 states and 40659 transitions. [2021-11-12 22:45:39,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 22:45:39,668 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-11-12 22:45:39,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:45:39,689 INFO L225 Difference]: With dead ends: 29660 [2021-11-12 22:45:39,690 INFO L226 Difference]: Without dead ends: 18758 [2021-11-12 22:45:39,698 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:45:39,699 INFO L933 BasicCegarLoop]: 976 mSDtfsCounter, 529 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 66.86ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 529 SdHoareTripleChecker+Valid, 1398 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.21ms SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 82.86ms IncrementalHoareTripleChecker+Time [2021-11-12 22:45:39,699 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [529 Valid, 1398 Invalid, 85 Unknown, 0 Unchecked, 2.21ms Time], IncrementalHoareTripleChecker [32 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 82.86ms Time] [2021-11-12 22:45:39,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18758 states. [2021-11-12 22:45:47,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18758 to 17324. [2021-11-12 22:45:47,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17324 states, 17323 states have (on average 1.351324828263003) internal successors, (23409), 17323 states have internal predecessors, (23409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:45:47,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17324 states to 17324 states and 23409 transitions. [2021-11-12 22:45:47,438 INFO L78 Accepts]: Start accepts. Automaton has 17324 states and 23409 transitions. Word has length 75 [2021-11-12 22:45:47,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:45:47,439 INFO L470 AbstractCegarLoop]: Abstraction has 17324 states and 23409 transitions. [2021-11-12 22:45:47,439 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:45:47,439 INFO L276 IsEmpty]: Start isEmpty. Operand 17324 states and 23409 transitions. [2021-11-12 22:45:47,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-12 22:45:47,440 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:45:47,440 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:45:47,441 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-12 22:45:47,441 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-12 22:45:47,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:45:47,441 INFO L85 PathProgramCache]: Analyzing trace with hash -1140941538, now seen corresponding path program 1 times [2021-11-12 22:45:47,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:45:47,441 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130106777] [2021-11-12 22:45:47,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:45:47,442 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:45:47,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:45:47,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:45:47,492 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:45:47,492 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130106777] [2021-11-12 22:45:47,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130106777] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:45:47,493 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:45:47,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-12 22:45:47,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321132872] [2021-11-12 22:45:47,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:45:47,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 22:45:47,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:45:47,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 22:45:47,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:45:47,494 INFO L87 Difference]: Start difference. First operand 17324 states and 23409 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:45:58,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:45:58,900 INFO L93 Difference]: Finished difference Result 41600 states and 56726 transitions. [2021-11-12 22:45:58,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 22:45:58,901 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2021-11-12 22:45:58,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:45:58,936 INFO L225 Difference]: With dead ends: 41600 [2021-11-12 22:45:58,936 INFO L226 Difference]: Without dead ends: 26214 [2021-11-12 22:45:58,949 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:45:58,950 INFO L933 BasicCegarLoop]: 957 mSDtfsCounter, 420 mSDsluCounter, 511 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 80.13ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 420 SdHoareTripleChecker+Valid, 1464 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.24ms SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 99.70ms IncrementalHoareTripleChecker+Time [2021-11-12 22:45:58,950 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [420 Valid, 1464 Invalid, 106 Unknown, 0 Unchecked, 2.24ms Time], IncrementalHoareTripleChecker [38 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 99.70ms Time] [2021-11-12 22:45:58,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26214 states. [2021-11-12 22:46:09,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26214 to 24134. [2021-11-12 22:46:09,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24134 states, 24133 states have (on average 1.3438445282393403) internal successors, (32431), 24133 states have internal predecessors, (32431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:46:09,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24134 states to 24134 states and 32431 transitions. [2021-11-12 22:46:09,529 INFO L78 Accepts]: Start accepts. Automaton has 24134 states and 32431 transitions. Word has length 78 [2021-11-12 22:46:09,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:46:09,530 INFO L470 AbstractCegarLoop]: Abstraction has 24134 states and 32431 transitions. [2021-11-12 22:46:09,530 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:46:09,530 INFO L276 IsEmpty]: Start isEmpty. Operand 24134 states and 32431 transitions. [2021-11-12 22:46:09,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-12 22:46:09,532 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:46:09,533 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:46:09,533 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-12 22:46:09,533 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-12 22:46:09,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:46:09,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1875624208, now seen corresponding path program 1 times [2021-11-12 22:46:09,533 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:46:09,533 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863823977] [2021-11-12 22:46:09,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:46:09,534 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:46:09,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:46:09,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:46:09,664 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:46:09,665 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863823977] [2021-11-12 22:46:09,665 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863823977] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:46:09,665 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:46:09,665 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-12 22:46:09,665 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481125088] [2021-11-12 22:46:09,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:46:09,666 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-12 22:46:09,666 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:46:09,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-12 22:46:09,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-12 22:46:09,667 INFO L87 Difference]: Start difference. First operand 24134 states and 32431 transitions. Second operand has 10 states, 10 states have (on average 8.2) internal successors, (82), 10 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:46:38,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:46:38,829 INFO L93 Difference]: Finished difference Result 58731 states and 78403 transitions. [2021-11-12 22:46:38,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-12 22:46:38,830 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.2) internal successors, (82), 10 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-11-12 22:46:38,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:46:38,921 INFO L225 Difference]: With dead ends: 58731 [2021-11-12 22:46:38,922 INFO L226 Difference]: Without dead ends: 58729 [2021-11-12 22:46:38,932 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=184, Invalid=518, Unknown=0, NotChecked=0, Total=702 [2021-11-12 22:46:38,933 INFO L933 BasicCegarLoop]: 1100 mSDtfsCounter, 4659 mSDsluCounter, 4264 mSDsCounter, 0 mSdLazyCounter, 496 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 313.14ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4659 SdHoareTripleChecker+Valid, 5339 SdHoareTripleChecker+Invalid, 666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.32ms SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 377.09ms IncrementalHoareTripleChecker+Time [2021-11-12 22:46:38,933 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4659 Valid, 5339 Invalid, 666 Unknown, 0 Unchecked, 13.32ms Time], IncrementalHoareTripleChecker [170 Valid, 496 Invalid, 0 Unknown, 0 Unchecked, 377.09ms Time] [2021-11-12 22:46:38,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58729 states. [2021-11-12 22:46:51,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58729 to 26241. [2021-11-12 22:46:51,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26241 states, 26240 states have (on average 1.3388338414634147) internal successors, (35131), 26240 states have internal predecessors, (35131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:46:51,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26241 states to 26241 states and 35131 transitions. [2021-11-12 22:46:51,803 INFO L78 Accepts]: Start accepts. Automaton has 26241 states and 35131 transitions. Word has length 82 [2021-11-12 22:46:51,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:46:51,803 INFO L470 AbstractCegarLoop]: Abstraction has 26241 states and 35131 transitions. [2021-11-12 22:46:51,804 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.2) internal successors, (82), 10 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:46:51,804 INFO L276 IsEmpty]: Start isEmpty. Operand 26241 states and 35131 transitions. [2021-11-12 22:46:51,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-12 22:46:51,806 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:46:51,807 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:46:51,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-11-12 22:46:51,807 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-12 22:46:51,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:46:51,807 INFO L85 PathProgramCache]: Analyzing trace with hash 587842462, now seen corresponding path program 1 times [2021-11-12 22:46:51,807 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:46:51,807 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388782186] [2021-11-12 22:46:51,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:46:51,808 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:46:51,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:46:51,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:46:51,865 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:46:51,865 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388782186] [2021-11-12 22:46:51,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388782186] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:46:51,865 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:46:51,865 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-12 22:46:51,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005542695] [2021-11-12 22:46:51,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:46:51,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 22:46:51,866 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:46:51,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 22:46:51,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:46:51,867 INFO L87 Difference]: Start difference. First operand 26241 states and 35131 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:47:09,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:47:09,368 INFO L93 Difference]: Finished difference Result 59653 states and 80695 transitions. [2021-11-12 22:47:09,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 22:47:09,368 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2021-11-12 22:47:09,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:47:09,422 INFO L225 Difference]: With dead ends: 59653 [2021-11-12 22:47:09,423 INFO L226 Difference]: Without dead ends: 37870 [2021-11-12 22:47:09,447 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:47:09,447 INFO L933 BasicCegarLoop]: 990 mSDtfsCounter, 592 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 83.56ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 592 SdHoareTripleChecker+Valid, 1340 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.46ms SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 105.23ms IncrementalHoareTripleChecker+Time [2021-11-12 22:47:09,447 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [592 Valid, 1340 Invalid, 113 Unknown, 0 Unchecked, 2.46ms Time], IncrementalHoareTripleChecker [27 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 105.23ms Time] [2021-11-12 22:47:09,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37870 states.